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Sample records for allogeneic bone marrow

  1. Engraftment of allogeneic dog bone marrow

    International Nuclear Information System (INIS)

    Resistance to allogeneic bone-marrow grafts (AR) was found to occur in many species, including the dog. The i.v. administration of silica particles suppressed Ar in vivo in this species. Genetic studies provide suggestive evidence for the existence of a previously unrecognized system or systems in the canine major histocompatibility complex controlling AR

  2. Allogeneic and Autologous Bone-Marrow Transplantation

    OpenAIRE

    Deeg, H. Joachim

    1988-01-01

    The author of this paper presents an overview of the current status of bone marrow transplantation, including indications, pre-transplant considerations, the transplant procedure, acute and delayed transplant-related problems, results currently attainable, and a short discussion of possible future developments.

  3. Increased rejection of murine allogeneic bone marrow in presensitized recipients

    NARCIS (Netherlands)

    vanOs, R; deWitte, T; Dillingh, JH; Mauch, PM; Down, JD

    1997-01-01

    The role of presensitizing murine recipients with donor spleen cells prior to T cell-depleted or -repleted H-2 compatible allogeneic bone marrow transplantation (BMT) was investigated at two different doses of total body irradiation (TBI). Recipients that were presensitized with 2 x 10(7) irradiated

  4. [T lymphocyte receptors after allogenic bone marrow transplantation].

    Science.gov (United States)

    Vilmer, E; Schumpp, M; Sigaux, F; Boiron, M; Bensussan, A

    1988-01-01

    Following allogeneic bone marrow transplantation, prominent expansion of peripheral T cells (40%) bearing gamma T cell receptor was observed in some patients. Biochemical, functional and molecular analyses were performed to characterize this T cell receptor and to understand its role in the immunodeficient state after transplantation.

  5. Graves-Basedow disease after allogeneic bone marrow transplantation

    International Nuclear Information System (INIS)

    One severe aplastic anaemia case who presented autoimmune thyroid disease after allogeneic bone marrow transplantation (alloBMT) is described. A 19 year old Polish girldeveloped Graves' hyperthyroidisms 19 months after allogeneic BMT for severe aplastic anaemia (SAA) donated from her brother. Her serum was positive for thyroid stimulating antibody (TSAb) and anti-thyroid peroxidase autoantibodies (aTPO) while her brother remained euthyroid, seronegative for TSAb, and showed no clinical signs of thyroid pathology. The genetic studies of lymphocytes FISH (fluorescence in situ hybridization) and analysis of STR (short tandem repeated) fragments suggested, that lymphocytes responsible for hyperthyroidisms were of donor origin. (author)

  6. Histopathological changes in the liver after allogeneic bone marrow transplantation

    OpenAIRE

    Sloane, JP; Farthing, MJG; Powles, RL

    1980-01-01

    Postmortem and surgical specimens of liver from 20 patients who had undergone allogeneic bone marrow transplantation for a variety of disorders were examined. The lesions fell into five major categories: bile duct atypia often associated with portal tract fibrosis (8 cases), veno-occlusive disease (2 cases), small foci of non-zonal hepatocyte necrosis (3 cases), opportunistic infections (3 cases), and a miscellaneous group of non-specific abnormalities. Our findings, in conjunction with those...

  7. Romiplostim in thrombocytopenia treatment after allogeneic bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    I. A. Lisukov

    2012-01-01

    Full Text Available Persistent thrombocytopenia is a frequent complication after allogeneic bone marrow transplantation (BMT. The major causes of thrombocytopenia include accelerated platelet destruction by antiplatelet antibodies, microangiopathy, viral infection, drug toxicity,graft`s hypofunction with insufficient production of platelets from megakaryocytes. We have evaluated an efficacy of TPO-receptor agonistromiplostim in treatment of 3 patients with refractory thrombocytopenia after allogeneic BMT. The first 30 years old patient received haploidentical allogeneic stem cell transplantation for refractory AML relapse. He developed graft hypofunction due to CMV infection, acute GVHD and thrombotic thrombocytopenic purpura (TTP with platelet counts 5 × 109/l and bleeding complications. After bone marrow “boost” the patient received romiplostim 1 mkg/kg weekly during 2 weeks and 4 mkg/kg during another 2 weeks. Upon reaching platelet counts 50 × 109/l the romiplostim was stopped, but platelet count decreased to 5–7 × 109/l and romiplostim was administered in dose of 4 mkg/kg weekly during 5 weeks. Platelet counts have achieved 150 × 109/l and thrombocytopenia during further follow-up was not revealed. The second 19 years old AML patient received haploidentical allogeneic stem cell transplantation for second remission consolidation. He developed thrombocytopenia (10 × 109/l due to CMV infection and severe TTP. He received romiplostim 4 mkg/kg weekly and 5 weeks later platelet counts was 50 × 109/l. The administration of romiplostim was allowed to avoid bleeding complications and transfusion dependency. The third 18 years old ALL patient received MUD allogeneic stem cell transplantation for second remission consolidation. He developed profound thrombocytopenia (5 × 109/l with severe hemorrhagic complications and platelet transfusions refractory due to TTP and acute GVHD. He received one dose of romiplostim 1 mkg/kg and two doses of 3 mkg

  8. Romiplostim in thrombocytopenia treatment after allogeneic bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    I. A. Lisukov

    2014-07-01

    Full Text Available Persistent thrombocytopenia is a frequent complication after allogeneic bone marrow transplantation (BMT. The major causes of thrombocytopenia include accelerated platelet destruction by antiplatelet antibodies, microangiopathy, viral infection, drug toxicity,graft`s hypofunction with insufficient production of platelets from megakaryocytes. We have evaluated an efficacy of TPO-receptor agonistromiplostim in treatment of 3 patients with refractory thrombocytopenia after allogeneic BMT. The first 30 years old patient received haploidentical allogeneic stem cell transplantation for refractory AML relapse. He developed graft hypofunction due to CMV infection, acute GVHD and thrombotic thrombocytopenic purpura (TTP with platelet counts 5 × 109/l and bleeding complications. After bone marrow “boost” the patient received romiplostim 1 mkg/kg weekly during 2 weeks and 4 mkg/kg during another 2 weeks. Upon reaching platelet counts 50 × 109/l the romiplostim was stopped, but platelet count decreased to 5–7 × 109/l and romiplostim was administered in dose of 4 mkg/kg weekly during 5 weeks. Platelet counts have achieved 150 × 109/l and thrombocytopenia during further follow-up was not revealed. The second 19 years old AML patient received haploidentical allogeneic stem cell transplantation for second remission consolidation. He developed thrombocytopenia (10 × 109/l due to CMV infection and severe TTP. He received romiplostim 4 mkg/kg weekly and 5 weeks later platelet counts was 50 × 109/l. The administration of romiplostim was allowed to avoid bleeding complications and transfusion dependency. The third 18 years old ALL patient received MUD allogeneic stem cell transplantation for second remission consolidation. He developed profound thrombocytopenia (5 × 109/l with severe hemorrhagic complications and platelet transfusions refractory due to TTP and acute GVHD. He received one dose of romiplostim 1 mkg/kg and two doses of 3 mkg

  9. Bone marrow transplant

    Science.gov (United States)

    Transplant - bone marrow; Stem cell transplant; Hematopoietic stem cell transplant; Reduced intensity nonmyeloablative transplant; Mini transplant; Allogenic bone marrow transplant; Autologous bone marrow transplant; Umbilical ...

  10. Total body irradiation and allogeneic bone-marrow transplantation

    International Nuclear Information System (INIS)

    The aim of the present study is to present the first case in the Bulgarian oncological practice of total-body irradiation (TBI) followed by allogeneic transplantation of hemopoietic peripheral steam cells from a haploidentical family donor to a patient with acute lymphoblastic leukemia. The patient was a 10-year old boy with a verified non-Hodgkin lymphoma - IV clinical stage (leukemia-lymphoma syndrome) with initial mediastinal and bone-marrow engagement. After the disease recurrence the patient was hospitalized in the Transplantation Department of the Specialized Pediatric Hospital for Active Treatment of Oncological Diseases for realizing allogeneic transplantation. The application of the conditioning regime includes Melphalan, Fludarabine, ATG and TBI with 5x2 Gy. The patient was discharged on the 30th day in a good general condition with compensated haematological parameters and stable function of the transplant, and with instructions for the control check-ups and examinations each 14 days till the day + 100. The TBI method applied by the team was simple for realization and did not require special equipment. The patient received irradiation by a vertical radiation beam in a small procedure room in a comfortable spinal and prone position, which allowed the realization of sufficiently homogeneous dose in the body and effective lung protection. The irradiation time was acceptable, compared with the time for the application of horizontal radiation beams at large distances. (authors)

  11. Isolated extramedullary relapse after allogeneic bone marrow transplantation for chronic myeloid leukemia

    OpenAIRE

    Au, WY; Chan, ACL; Lie, AKW; So, JCC; Liang, R.; Kwong, YL

    1998-01-01

    Relapse of chronic myeloid leukemia (CML) as extramedullary granulocytic sarcoma (GS) after allogeneic bone marrow transplantation (BMT) is a rare occurrence. We report two patients who developed spinal GS as the first indication of relapse after allogeneic BMT for CML. In both cases, the marrow was in morphologic and karyotypic remission. However, fluorescence in situ hybridization (FISH) successfully demonstrated the presence of a minor Ph-positive clone in the marrow, as well as an occult ...

  12. Treatment of Niemann-Pick disease type B by allogeneic bone marrow transplantation.

    OpenAIRE

    Vellodi, A.; Hobbs, J. R.; O'Donnell, N M; Coulter, B S; Hugh-Jones, K.

    1987-01-01

    Allogenic bone marrow transplantation was carried out on a 3 year old girl with Niemann-Pick disease type B. Successful engraftment was achieved, and nine months after the procedure there was definite clearing of the sphingomyelin from the liver and pronounced clearing from the bone marrow. Any patient with Niemann-Pick disease type B complicated by early or severe hepatic impairment should be considered for bone marrow transplantation.

  13. Successful Treatment with Ganciclovir for Cytomegalovirus Duodenitis following Allogenic Bone Marrow Transplantation

    OpenAIRE

    Ahn, Jin Hee; Lee, Je-Hwan; Lee, Kyoo-Hyung; Kim, Woo-Kun; Lee, Jung-Shin; Bahng, Hyeseung; Jung, Hwoon-Yong; Kim, Yang-Soo; Kim, Onja; Kim, Sang-Hee

    1999-01-01

    Cytomegalovirus (CMV) disease is a major cause of morbidity and mortality in immunocompromised patients. CMV enteritis should be considered when nausea and vomiting continue 3 to 4 weeks after bone marrow transplantation (BMT). The treatment of CMV enteritis is not well established. We report a CMV duodenitis patient following allogenic bone marrow transplantation. The patient had prolonged nausea and vomiting for 5 weeks after bone marrow transplantation and CMV duodenitis was diagnosed by t...

  14. Pneumatosis intestinalis in children after allogeneic bone marrow transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Yeager, A.M.; Kanof, M.E.; Lake, A.M.; Kramer, S.S.; Jones, B.; Saral, R.; Santos, G.W.

    1987-01-01

    Four children, ages 3 to 8 years, developed pneumatosis intestinalis (PI) after allogeneic bone marrow transplantation (BMT) for acute leukemia or severe aplastic anemia. PI was detected at a median of 48 days (range, 10-63 days) after BMT and was associated with abdominal symptoms and clinical signs. All patients had severe systemic and/or highgrade cutaneous acute graft-versus-host disease (AGVHD) at some time after BMT and were receiving corticosteroids at the time of development of PI; however, PI was associated with concomitant severe AGVHD in only one patient. One patient with PI had Hafnia alvei bacteremia and another patient had gastroenteritis due to rotavirus and adenovirus. All patients were treated with supportive care and systemic broad-spectrum antibiotics, and PI resolved 2-16 days after onset. Two patients died with BMT-associated complications unrelated to PI. Multiple factors contribute to the development of PI after BMT, and the prognosis for recovery from PI is good with medical management alone. Overall survival in these patients is dependent on the frequency and severity of other conditions, such as AGVHD and opportunistic infections, after BMT.

  15. Replacement of hematopoietic system by allogeneic stem cell transplantation in myelofibrosis patients induces rapid regression of bone marrow fibrosis

    OpenAIRE

    Kröger Nicolaus; Kvasnicka Michael; Thiele Jürgen

    2012-01-01

    Abstract Bone marrow fibrosis is a hallmark of primary and post ET/PV myelofibrosis. To investigated the impact of replacement of the hematopoietic system in myelofibrosis patients by allogeneic stem cell transplantation on bone marrow fibrosis, we studied bone marrow fibrosis on bone marrow samples from 24 patients with myelofibrosis before and after dose-reduced conditioning followed by allogeneic stem cell transplantation from related or unrelated donor. Using the European Consensus on Gra...

  16. 5-Azacytidine as Salvage Treatment in Relapsed Myeloid Tumors after Allogeneic Bone Marrow Transplantation

    OpenAIRE

    Bolaños-Meade, Javier; Smith, B. Douglas; Gore, Steven D.; McDevitt, Michael A.; Luznik, Leo; Fuchs, Ephraim J.; Jones, Richard J.

    2010-01-01

    Relapse after allogeneic blood or marrow transplantation carries a very poor prognosis. Current strategies for management that include donor lymphocyte infusions (DLIs) and salvage chemotherapies are usually toxic and ineffective. Here we report the outcome of 10 patients with myeloid malignancies that received 5-azacytidine after a failed allogeneic bone marrow transplant. Of the 10 patients, 6 achieved a complete remission, 1 had stable disease, and 3 progressed after a median of 6 cycles a...

  17. Bone marrow transplant - discharge

    Science.gov (United States)

    Transplant - bone marrow - discharge; Stem cell transplant - discharge; Hematopoietic stem cell transplant - discharge; Reduced intensity; Non-myeloablative transplant - discharge; Mini transplant - discharge; Allogenic bone marrow transplant - discharge; ...

  18. Thiotepa improves allogeneic bone marrow engraftment without enhancing stem cell depletion in irradiated mice

    NARCIS (Netherlands)

    Down, JD; Westerhof, GR; Boudewijn, A; Setroikromo, R; Ploemacher, RE

    1998-01-01

    Thiotepa (TT) has long been considered for inclusion in clinical bone marrow transplant (BMT) conditioning regimens in an attempt to prevent allograft rejection and leukemia relapse, These studies have been encouraged by initial murine experiments showing a clear improvement in allogeneic bone marro

  19. Human Allogeneic Bone Marrow and Adipose Tissue Derived Mesenchymal Stromal Cells Induce CD8+ Cytotoxic T Cell Reactivity

    OpenAIRE

    Roemeling-van Rhijn, Marieke; Reinders, Marlies E.; Franquesa, Marcella; Engela, Anja U; Korevaar, Sander S; Roelofs, Helene; Genever, Paul G; IJzermans, Jan NM; Betjes, Michiel GH; Baan, Carla C; Weimar, Willem; Hoogduijn, Martin J.

    2013-01-01

    Introduction For clinical applications, Mesenchymal Stromal Cells (MSC) can be isolated from bone marrow and adipose tissue of autologous or allogeneic origin. Allogeneic cell usage has advantages but may harbor the risk of sensitization against foreign HLA. Therefore, we evaluated whether bone marrow and adipose tissue-derived MSC are capable of inducing HLA-specific alloreactivity. Methods MSC were isolated from healthy human Bone Marrow (BM-MSC) and adipose tissue (ASC) donors. Peripheral ...

  20. 5-Azacytidine as Salvage Treatment in Relapsed Myeloid Tumors after Allogeneic Bone Marrow Transplantation

    Science.gov (United States)

    Bolaños-Meade, Javier; Smith, B. Douglas; Gore, Steven D.; McDevitt, Michael A.; Luznik, Leo; Fuchs, Ephraim J.; Jones, Richard J.

    2011-01-01

    Relapse after allogeneic blood or marrow transplantation carries a very poor prognosis. Current strategies for management that include donor lymphocyte infusions (DLIs) and salvage chemotherapies are usually toxic and ineffective. Here we report the outcome of 10 patients with myeloid malignancies that received 5-azacytidine after a failed allogeneic bone marrow transplant. Of the 10 patients, 6 achieved a complete remission, 1 had stable disease, and 3 progressed after a median of 6 cycles administered. Only 1 patient has died (of disease progression), and no flares of graft-versus-host disease (GVHD) were observed with 5-azacytidine. As of latest follow-up, the median overall survival (OS) for the group was 422.5 days (127–1411). These results further suggest that 5-azacytidine is an active agent after failing an allogeneic bone marrow transplant, and prospective studies are warranted. PMID:20951817

  1. Lung function after allogeneic bone marrow transplantation for leukaemia or lymphoma

    DEFF Research Database (Denmark)

    Nysom, K; Holm, K; Hesse, B;

    1996-01-01

    Longitudinal data were analysed on the lung function of 25 of 29 survivors of childhood leukaemia or lymphoma, who had been conditioned with cyclophosphamide and total body irradiation before allogeneic bone marrow transplantation, to test whether children are particularly vulnerable to pulmonary...... to their age at bone marrow transplantation. In conclusion, patients had subclinical restrictive pulmonary disease at a median of eight years after total body irradiation and allogeneic bone marrow transplantation....... significantly reduced transfer factor, total lung capacity, and forced vital capacity (-1.0, -1.2, and -0.8 SD score, respectively), and increased ratio of forced expiratory volume in one second to forced vital capacity (+0.9 SD score). None of the patients had pulmonary symptoms, and changes were unrelated...

  2. Critical Role of Sensitized Serum in Rejection of Allogeneic Bone Marrow Cells

    Directory of Open Access Journals (Sweden)

    Lu Hong Xu

    2014-09-01

    Full Text Available OBJECTIVE: Humoral immunity has been clearly implicated in solid organ transplantation, but little is known about the relationship between humoral immunity and hematopoietic stem cell transplantation. This study was designed to investigate that relationship. METHODS: Sensitized serum was obtained from a sensitized murine model established by allogeneic splenocyte transfusion. Sensitized serum was incubated with allogeneic bone marrow cells (BMCs in vitro and the cytotoxicity was evaluated by the complement-dependent cytotoxicity method. Mice were transplanted with allogeneic BMCs incubated with sensitized serum after lethal irradiation. The engraftment was assayed by hematopoietic recovery and chimera analysis. Moreover, mice received passive transfer of sensitized serum 1 day prior to transplantation. Mortality was scored daily after bone marrow transplantation. RESULTS: The in vitro experiments showed that sensitized serum was capable of impairing allogeneic BMCs through the complement-dependent cytotoxicity pathway. The animal studies showed that BMCs incubated with sensitized serum failed to rescue mice from lethal irradiation. The engraftment assay showed that the allogeneic BMCs incubated with sensitized serum were rejected with time in the recipients. Furthermore, the mice died of marrow graft rejection by transfer of sensitized serum prior to transplantation. CONCLUSION: Taken together, our results indicated that sensitized serum played a critical role in graft rejection during hematopoietic stem cell transplantation.

  3. Dominance and persistence of donor marrow in long-lived allogeneic radiation chimeras obtained with unmanipulated bone marrow

    International Nuclear Information System (INIS)

    Allogeneic, H-2-incompatible irradiation chimeras (H-2sup(d) → H-2sup(b)) constructed with normal, unmanipulated bone marrow and with marrow-derived factors live long and do not manifest a GvH disease. Their response to primary immunization is deficient but their alloreactivity is normal. This chimeric allotolerance cannot be passively transferred from chimeric donors to normal irradiated recipients. Passive transfer of both donor- or recipient-type immuno-competent T-cells into the chimeric mice does not lead to syngeneic reconstitution, rejection of the engrafted marrow or GvH disease, and the mice maintain permanently their chimerism. This new model demonstrates that chimerism is not eradicable in long-lived chimeras reconstituted with unmanipulated bone marrow, and that the bone marrow itself plays a dominant role in maintenance of chimerism. (Auth.)

  4. Tumor vaccine strategies after allogeneic T-cell depleted bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    Ferrara James L.M.

    2002-01-01

    Full Text Available Allogeneic bone marrow transplantation is currently restricted to hematological malignancies because of a lack of anti-tumor activity against solid cancers. We have tested a novel treatment strategy to stimulate specific anti-tumor activity against a solid tumor after transplantation by vaccination with irradiated tumor cells engineered to secrete granulocyte-macrophage colony-stimulating factor. Using the B16 melanoma model, we found that vaccination elicited potent anti-tumor activity in recipients of syngeneic bone marrow transplantation in a time dependent fashion, and that immune reconstitution was critical for the development of anti-tumor activity. Vaccination did not stimulate anti-tumor immunity after allogeneic bone marrow transplantation because of the post-transplantation immunodeficiency associated with graft-versus-host disease. Remarkably, vaccination was effective in stimulating potent and long-lasting anti-tumor activity in recipients of T cell-depleted allogeneic bone marrow. Thus T cells derived from donor stem cells were able to recognize tumor antigens even though they remained tolerant to host histocompatibility antigens. Donor leukocyte infusion from a donor immunized with the recipient-derived B16 vaccines enhanced clinical activity of tumor vaccines without exacerbating graft-versus-host disease and CD4+ T cells are essential for this enhancement. These results demonstrate that vaccination of both donors and recipients can stimulate potent anti-tumor effects without the induction of graft-versus-host disease, and this strategy has important implications for the treatment of patients with solid malignancies.

  5. Clinical Questions of Tissue Incompatibility after Allogenic Bone-Marrow Transplantation

    International Nuclear Information System (INIS)

    This paper describes the results of studies concerning tissue incompatibility in the transplantation of allogenic bone marrow into patients suffering from hypoplastic and aplastic anaemia. Factual data are presented on the extent to which the immune activity and capacity for immunological response of recipients is preserved. Attention is mainly directed to the characteristics of the spectrum showing serological activity of the anti-leucocyte antibodies, which depends on the type of sensitization. These data point to the need for differential use of haemotherapeutic agents and are also of some importance in the selection of bone-marrow donors. (author)

  6. Necrotizing cerebritis in an allogeneic bone marrow transplant recipient due to Cladophialophora bantiana.

    OpenAIRE

    Emmens, R K; Richardson, D.; Thomas, W; Hunter, S.; Hennigar, R A; Wingard, J R; Nolte, F S

    1996-01-01

    We describe a necrotizing cerebritis in an allogeneic bone marrow transplant recipient caused by the neurotropic, dematiaceous fungus Cladophialophora bantiana. The patient presented 7 months after bone marrow transplantation with fever and sudden onset of left-sided weakness, followed shortly by cranial nerve III and VI palsies. The patient had a lesion (3.0 by 2.0 by 2.0 cm) of the right midbrain with extension to the pons, the left brain stem, and the right superior and the middle cerebell...

  7. Allogeneic bone marrow transplantation in adults after fractionated body irradiation and high dose cyclophosphamide

    International Nuclear Information System (INIS)

    The authors present short and long-term results of allogeneic bone marrow transplantation after hyper-fractionated total body irradiation and high dose cyclophosphamide in ten patients treated for leukaemia during th period 1985-89. Three patients died from complications connected to the transplantation, while seven are living free from leukaemia 18 to 59 months after transplantation. Two patients need treatment for chronic graft versus host disease. Allogeneic bone marrow transplantation is expensive and risky. Close cooperation between clinicians and laboratory specialists is essential. The treatment increases long term survival and probably cures certain patients with leukaemia. Some of the patients will need treatment for chronic graft versus host disease and other late sequelae. 19 refs., 2 tabs

  8. Optimal graft source for allogeneic hematopoietic stem cell transplant: bone marrow or peripheral blood?

    Science.gov (United States)

    Adhikari, Janak; Sharma, Priyadarshani; Bhatt, Vijaya Raj

    2016-08-01

    Peripheral blood (PB), compared with bone marrow graft, has higher stem cell content, leads to faster engraftment and is more convenient for collection. Consequently, the use of PB graft has significantly increased in recent years. Although the use of PB graft is acceptable or even preferred to bone marrow graft in matched related donor allogeneic transplant due to a possibility of improved survival, PB graft increases the risk of chronic graft-versus-host disease and associated long-term toxicities in the setting of matched unrelated donor allogeneic transplant. In haploidentical transplant, mitigation of graft-versus-host disease with the use of post-transplant cyclophosphamide is a hypothesis-generating possibility; however, available studies have significant limitations to draw any definite conclusion. PMID:27168462

  9. Morganella morganii pericarditis 3 years after allogenic bone marrow transplantation for mantle cell lymphoma.

    Science.gov (United States)

    Yang, Zhi-Tao; Lecuit, Marc; Suarez, Felipe; Carbonnelle, Etienne; Viard, Jean-Paul; Dupont, Bertrand; Buzyn, Agnès; Lortholary, Olivier

    2006-11-01

    We report herein a case of Morganella morganii-associated acute purulent pericarditis that developed 3 years after allogenic bone marrow transplantation. The patient was successfully treated with surgical drainage and cefotaxime for 6 weeks. Splenectomy and immunosuppression for chronic GVH-D are likely to have favored the development of this rare infectious complication after BMT. M. morganii should be added to the list of bacteria causing purulent pericarditis, especially in immunocompromised hosts.

  10. Bone Marrow GvHD after Allogeneic Hematopoietic Stem Cell Transplantation

    OpenAIRE

    Szyska, Martin; Na, Il-Kang

    2016-01-01

    The bone marrow is the origin of all hematopoietic lineages and an important homing site for memory cells of the adaptive immune system. It has recently emerged as a graft-versus-host disease (GvHD) target organ after allogeneic stem cell transplantation (alloHSCT), marked by depletion of both hematopoietic progenitors and niche-forming cells. Serious effects on the restoration of hematopoietic function and immunological memory are common, especially in patients after myeloablative conditioni...

  11. Lung function after allogeneic bone marrow transplantation for leukaemia or lymphoma.

    Science.gov (United States)

    Nysom, K; Holm, K; Hesse, B; Ulrik, C S; Jacobsen, N; Bisgaard, H; Hertz, H

    1996-05-01

    Longitudinal data were analysed on the lung function of 25 of 29 survivors of childhood leukaemia or lymphoma, who had been conditioned with cyclophosphamide and total body irradiation before allogeneic bone marrow transplantation, to test whether children are particularly vulnerable to pulmonary damage after transplantation. None developed chronic graft-versus-host disease. Transfer factor and lung volumes were reduced immediately after bone marrow transplantation, but increased during the following years. However, at the last follow up, 4-13 years (median 8) after transplantation, patients had significantly reduced transfer factor, total lung capacity, and forced vital capacity (-1.0, -1.2, and -0.8 SD score, respectively), and increased ratio of forced expiratory volume in one second to forced vital capacity (+0.9 SD score). None of the patients had pulmonary symptoms, and changes were unrelated to their age at bone marrow transplantation. In conclusion, patients had subclinical restrictive pulmonary disease at a median of eight years after total body irradiation and allogeneic bone marrow transplantation.

  12. Adult allogeneic bone marrow transplantation: initial experience in the University Hospital, Kuala Lumpur.

    Science.gov (United States)

    Teh, A; Bosco, J J; Leong, K W; Saw, M H; Menaka, N; Devashanti, P

    1997-03-01

    Prior to 1993, bone marrow transplantation for adult patients was not available in Malaysia. Adult allogeneic bone marrow transplantation commenced in Malaysia when the first transplant was conducted at the University Hospital, Kuala Lumpur on 2 November 1993. Up till July 1995, 10 adult bone marrow transplants had been conducted at the University Hospital. Five patients had acute myeloid leukaemia in first remission, 4 had chronic myeloid leukaemia and 1 had acute lymphoblastic leukaemia in first partial remission. The age range of patients at the time of transplant is 16-40 years (mean 25.5 years). All patients engrafted successfully and the survival for the first 100 days post-transplant is 90%. One patient demonstrated haematological relapse post-transplant but achieved remission with donor buffy-coat infusion. The mean drug cost incurred was RM28,269 for the first 100 days. Locally available adult allogeneic bone marrow transplantation is safe, affordable and has comparable results with reputable overseas transplant centres.

  13. Bronchiolitis obliterans after allogenic bone marrow transplantation: HRCT findings

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Jung Im; Jung, Won Sang; Hahn, Seong Tai; Park, Seog Hee [St. Mary' s Hospital, College of Medicine, Seoul (Korea, Republic of); Min, Chang Ki; Kim, Chun Choo [College of Medicine, The Catholic University, Seoul (Korea, Republic of)

    2004-06-15

    To evaluate the high resolution computed tomography (HRCT) findings of bronchiolitis obliterans (BO) after bone marrow transplantation (BMT). During the past three years, 11 patients were diagnosed as having BO after BMT when they developed irreversible air flow obstruction, with an FEV{sub 1} value of less than 80% of the baseline value, without any clinical evidence of infection. All 11 patients underwent HRCT, of whom eight also underwent follow-up HRCT. The HRCT images were assessed retrospectively for the presence of decreased lung attenuation, segmental or subsegmental bronchial dilatation, diminution of peripheral vascularity, centrilobular nodules, and branching linear structure on the inspiratory images. The lobar distribution of the decreased lung attenuation and bronchial dilatation was also examined. The presence of air trapping was investigated on the expiratory images. The interval changes of the HRCT findings were evaluated in those patients who had follow-up images. Abnormal HRCT findings were present in all cases; the most common abnormalities were decreased lung attenuation (n=11), subsegmental bronchial dilatation (n=6), diminution of peripheral vascularity (n=6), centrilobular nodules or branching linear structure (n=3), and segmental bronchial dilatation (n=3). Expiratory air trapping was noted in all patients. The decreased lung attenuation and bronchial dilatations were more frequent or extensive in the lower lobes. Interval changes were found in all patients with follow-up HRCT: increased extent of decreased lung attenuation (n=7); newly developed or progressed bronchial dilatation (n=4); and increased lung volume (n=3). HRCT scans are abnormal in patients with BO, with the most commonly observed finding being areas of decreased lung attenuation. While the HRCT findings are not specific, it is believed that their common features can assist in the diagnosis of BO in BMT recipients.

  14. Facilitation of allogeneic bone marrow transplantation by a T cell-specific immunotoxin containing daunomycin

    International Nuclear Information System (INIS)

    Daunomycin coupled via an acid-sensitive spacer to monoclonal Thy-1.2-specific antibody was used to purge T lymphocytes from a 1:1 mixture of murine C57BL/6J bone marrow and spleen cells prior to engraftment in fully allogeneic, irradiated BALB/c recipients. Treatment of bone marrow with the immunotoxin at a concentration used for purging had no effect on the viability of committed hematopoietic progenitor or multipotent stem cells. All of the recipients of purged bone marrow were at least 80% chimeric for donor peripheral blood cells and none developed graft-versus-host disease. Out of 50 chimeras, 49 were still alive more than 200 days posttransplantation. The chimeras were shown to be tolerant to donor tissue as tested by mixed lymphocyte reactivity, cell-mediated cytotoxicity, and skin grafting. The same tests revealed full immunocompetence of chimeras to third-party alloantigens. In vivo IgM and IgG antibody responses to sheep red blood cells were similar in magnitude in allogeneically and syngeneically reconstituted mice

  15. Homing regularity of different doses bone marrow transplantation in allogeneic hosts

    International Nuclear Information System (INIS)

    Objective: To explore the homing regularity of different doses of bone marrow cell transplantation. Method: An allogeneic mouse model was used. The homing status of different dose groups from the first day to the forth day after transplantation were observed. Results: The rate of positive cells in bone marrow and spleen: differences among four groups was not significant. The rate of positive cells of third day was highest among four days (P<0.01). A phenomenon that homing-mobilization-re-homing could be observed. The homing efficiency: low dose groups were higher than that high dose groups (P<0.01). Conclusion: The homing efficiency of low dose groups is higher than that of the high dose groups in certain range, the routine method of transplanting a large quantities cells by a single injection may be an waste

  16. Characteristics of macrophages in irradiation chimeras in mice reconstituted with allogeneic bone marrow cells

    International Nuclear Information System (INIS)

    Biological and immunological characteristics of the reticuloendothelial system of irradiation bone marrow chimeric mice and macrophages collected from various tissue sources of the mice were studied. The chimeras showed comparable activities in carbon clearance to those of normal donor or recipient mice. The macrophages from spleen, lymph node, bone marrow, peripheral blood, liver, peritoneal cavity, and lung were demonstrated to be of donor marrow origin. They showed almost the same enzyme activities and phagocytic capability of sheep erythrocytes (SRBC, E), SRBC sensitized with anti-SRBC IgG (EA), and SRBC sensitized with anti-SRBC IgM and coated with complement (EAC) as those of normal mice. Proportions of Fc receptor and complement receptor-positive cells are also in normal range. In addition, the antigen-presenting capability of the chimeric macrophages for in vitro primary antibody response to SRBC was intact. These observations suggest that the reticuloendothelial system and macrophages of allogeneic bone marrow chimeras where donor and recipient differ at the major histocompatibility complex have no defect so far as could be ascertained by the present study

  17. Allogeneic Th1 Cells Home to Host Bone Marrow and Spleen and Mediate IFNγ-Dependent Aplasia

    OpenAIRE

    Chewning, Joseph H.; Zhang, Weiwei; Randolph, David A.; Swindle, C. Scott; Schoeb, Trenton R.; Weaver, Casey T.

    2013-01-01

    Bone marrow graft failure and poor graft function are frequent complications following hematopoietic stem cell transplantation and result in significant morbidity and mortality. Both conditions are associated with graft versus host disease (GVHD), although the mechanism remains undefined. Here we show in two distinct murine models of GVHD (complete MHC- and class II-disparate) that mimic human peripheral blood stem cell transplantation that Th1 CD4+ cells induce bone marrow failure in allogen...

  18. Interstitial pneumonitis after allogeneic bone marrow transplantation following total body irradiation

    International Nuclear Information System (INIS)

    The records of 40 patients who received allogeneic bone marrow transplantation (BMT) at Hyogo College of Medicine under the same conditioning regimen using cyclophosphamide and total body irradiation (TBI) from January 1984 to August 1989 were analyzed. The dose rate of TBI was 10 cGy per minute, and the total dose was 10 Gy (2.5 Gy daily for 4 days). Interstitial pneumonitis (IP) occurred in 13 of 40 patients, and was fatal in five patients. The probability of developing IP during the first year was 31%. We performed univariate analysis on the following factors but did not find any significant risk factors for IP: age and sex of patient, sex mismatch, ABO mismatch, grade of acute graft-versus-host disease, post immunosuppression regimen, and number of marrow cells transfused. (author)

  19. Anti-bacterial immunity to Listeria monocytogenes in allogeneic bone marrow chimera in mice

    International Nuclear Information System (INIS)

    Protection and delayed-type hypersensitivity (DTH) to the facultative intracellular bacterium Listeria monocytogenes (L.m.) were studied in allogeneic and syngeneic bone marrow chimeras. Lethally irradiated AKR (H-2k) mice were successfully reconstituted with marrow cells from C57BL/10 (B10) (H-2b), B10 H-2-recombinant strains or syngeneic mice. Irradiated AKR mice reconstituted with marrow cells from H-2-compatible B10.BR mice, [BR----AKR], as well as syngeneic marrow cells, [AKR----AKR], showed a normal level of responsiveness to the challenge stimulation with the listeria antigens when DTH was evaluated by footpad reactions. These mice also showed vigorous activities in acquired resistance to the L.m. By contrast, chimeric mice that had total or partial histoincompatibility at the H-2 determinants between donor and recipient, [B10----AKR], [B10.AQR----AKR], [B10.A(4R)----AKR], or [B10.A(5R)----AKR], were almost completely unresponsive in DTH and antibacterial immunity. However, when [B10----AKR] H-2-incompatible chimeras had been immunized with killed L.m. before challenge with live L.m., these mice manifested considerable DTH and resistance to L.m. These observations suggest that compatibility at the entire MHC between donor and recipient is required for bone marrow chimeras to be able to manifest DTH and protection against L.m. after a short-term immunization schedule. However, this requirement is overcome by a preceding or more prolonged period of immunization with L.m. antigens. These antigens, together with marrow-derived antigen-presenting cells, can then stimulate and expand cell populations that are restricted to the MHC (H-2) products of the donor type

  20. Alpha-GalCer Administration after Allogeneic Bone Marrow Transplantation Improves Immune Reconstitution in Mice

    Institute of Scientific and Technical Information of China (English)

    Jing-hua Liu; Li-ping Dou; Li-xin Wang; Li-li Wang; Fan Zhou; Li Yu

    2011-01-01

    Objective To explore the effect of a-galactosyleramide (α-GalCer) on immune recovstitution un der acute graft-versus-host disease (aGVHD). Methods BALB/c mice were transplanted with allogeneic C57BL/6 bone marrow cells and spleno cytes (both 1 × 107) after receiving lethal total-body irradiation, a-GalCer (100 ug/kg) or vehicle (dimethylsulfoxide) was administered intraperitoneally immediately after transplantation. The effects of α-GalCer on immune reconstitution, proliferation of T cells and B cells, hematopoiesis, and thymic microenvironment were assessed.Results The α-GalCer group exhibited higher percentages of CD3+, CD4+, CD8+, B220+, CD40+,and CD86+ cells compared with the vehicle group. The number of colony forming unit per 1000 CD34+cells in the α-GalCer group was higher than in the vehicle group (P=0.0012). In vitro proliferation assays showed that the α-GalCer group had higher percentages of CD3+, CD4+, CD8+, and B220+ cells compared with the vehicle group. As for the results of in vivo proliferation assays, the numbers of CD3+, CD4+, CD8+,and B220+ cells were higher in the α-GalCer group than in the normal group, especially the number of B220+ cells (P=0.007). Significant difference was not found in thymocyte count between the α-GalCer group and the vehicle group, nor in the percentages of CD3+, CD4+, and CD8+ cells. Conclusion Administration of α-GalCer after allogeneic bone marrow transplantation may promote immune reconstitution in the presence of aGVHD.

  1. Immunological Basis of Bone Marrow Failure after Allogeneic Hematopoietic Stem Cell Transplantation

    Science.gov (United States)

    Masouridi-Levrat, Stavroula; Simonetta, Federico; Chalandon, Yves

    2016-01-01

    Bone marrow failure (BMF) syndromes are severe complications of allogeneic hematopoietic stem cell transplantation (allo-HSCT). In this paper, we distinguish two different entities, the graft failure (GF) and the poor graft function (PGF), and we review the current understanding of the interactions between the immune and hematopoietic compartments in these conditions. We first discuss how GF occurs as the result of classical alloreactive immune responses mediated by residual host cellular and humoral immunity persisting after conditioning and prevented by host and donor regulatory T cells. We next summarize the current knowledge about the contribution of inflammatory mediators to the development of PGF. In situations of chronic inflammation complicating allo-HSCT, such as graft-versus-host disease or infections, PGF seems to be essentially the result of a sustained impairment of hematopoietic stem cells (HSC) self-renewal and proliferation caused by inflammatory mediators, such as interferon-γ (IFN-γ) and tumor necrosis factor-α, and of induction of apoptosis through the Fas/Fas ligand pathway. Interestingly, the production of inflammatory molecules leads to a non-MHC restricted, bystander inhibition of hematopoiesis, therefore, representing a promising target for immunological interventions. Finally, we discuss immune-mediated impairment of bone marrow microenvironment as a potential mechanism hampering hematopoietic recovery. Better understanding of immunological mechanisms responsible for BMF syndromes after allo-HSCT may lead to the development of more efficient immunotherapeutic interventions. PMID:27695456

  2. Bone marrow-derived hematopoietic stem and progenitor cells infiltrate allogeneic and syngeneic transplants.

    Science.gov (United States)

    Fan, Z; Enjoji, K; Tigges, J C; Toxavidis, V; Tchipashivili, V; Gong, W; Strom, T B; Koulmanda, M

    2014-12-01

    Lineage (CD3e, CD11b, GR1, B220 and Ly-76) negative hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs) infiltrate islet allografts within 24 h posttransplantation. In fact, lineage(negative) Sca-1(+) cKit(+) ("LSK") cells, a classic signature for HSCs, were also detected among these graft infiltrating cells. Lineage negative graft infiltrating cells are functionally multi-potential as determined by a standard competitive bone marrow transplant (BMT) assay. By 3 months post-BMT, both CD45.1 congenic, lineage negative HSCs/HPCs and classic "LSK" HSCs purified from islet allograft infiltrating cells, differentiate and repopulate multiple mature blood cell phenotypes in peripheral blood, lymph nodes, spleen, bone marrow and thymus of CD45.2 hosts. Interestingly, "LSK" HSCs also rapidly infiltrate syngeneic islet transplants as well as allogeneic cardiac transplants and sham surgery sites. It seems likely that an inflammatory response, not an adaptive immune response to allo-antigen, is responsible for the rapid infiltration of islet and cardiac transplants by biologically active HSCs/HPCs. The pattern of hematopoietic differentiation obtained from graft infiltrating HSCs/HPCs, cells that are recovered from inflammatory sites, as noted in the competitive BMT assay, is not precisely the same as that of intramedullary HSCs. This does not refute the obvious multi-lineage potential of graft infiltrating HSCs/HPCs.

  3. Natural killer function following allogeneic bone marrow transplantation. Very early reemergence but strong dependence of cytomegalovirus infection

    DEFF Research Database (Denmark)

    Hokland, M; Jacobsen, N; Ellegaard, J;

    1988-01-01

    Natural killer (NK) cell function was followed sequentially after allogeneic bone marrow transplantation (BMT) using three approaches: (1) chromium-release assay with purified mononuclear effector cells, (2) chromium-release assay with whole blood effectors, and 3) enumeration of lymphocytes......) infections (primary or reactivated). In contrast, the presence of graft-versus-host (GVH) disease did not associate with consistent changes in the NK parameters measured here. After the first month of increase, NK declined reaching levels near those observed in their respective bone marrow donors at day 90...

  4. Immunodeficiency after allogeneic bone marrow transplantation in man. Effect of phorbol ester (phorbol myristate acetate) and calcium ionophore (A23187) in vitro

    DEFF Research Database (Denmark)

    Møller, J; Hofmann, B; Langhoff, E;

    1989-01-01

    This study was undertaken to clarify the mechanism behind the severely decreased lymphocyte proliferative response upon stimulation with mitogens and antigens seen after allogeneic bone marrow transplantation (BMT) in man. We investigated eight BMT patients and eight controls and found...

  5. Normalization of Red Cell Enolase Level Following Allogeneic Bone Marrow Transplantation in a Child with Diamond-Blackfan Anemia

    OpenAIRE

    Park, Jeong A; Lim, Yeon Jung; Park, Hyeon Jin; Kong, Sun Young; Park, Byung Kiu; Ghim, Thad T.

    2010-01-01

    We describe a girl with Diamond-Blackfan anemia with accompanying red cell enolase deficiency. At the age of 9 yr old, the patient received allogeneic bone marrow transplantation from her HLA-identical sister who had normal red cell enolase activity. While the post transplant DNA analysis with short tandem repeat has continuously demonstrated a stable mixed chimerism on follow-up, the patient remains transfusion independent and continues to show a steady increase in red cell enolase activity ...

  6. Graft-versus-leukemia effects from donor lymphocyte infusion after nonmyeloablative allogeneic bone marrow transplantation in mice

    Institute of Scientific and Technical Information of China (English)

    DU Bing; LI De-peng; XU Kai-lin; PAN Xiu-ying

    2005-01-01

    Background Nonmyeloablative allogeneic bone marrow transplantation has been used since the 1990s as a new hematological stem cell transplantation strategy for treating hematological diseases. The purpose of this study was to explore the graft-versus-leukemia (GVL) effects of donor lymphocyte infusions (DLIs) after nonmyeloablative allogeneic bone marrow transplantations, while assessing the declines in treatment-associated morbidity, mortality, and graft-versus-host disease (GVHD).Methods A total of 615 (H-2k) mice were injected with L615 tumor cells and received 500 cGy (60Coγ-ray) irradiation three days later, followed by an allogeneic bone marrow transplantation (allo-BMT). The allo-grafts consisted of 3×107 bone marrow cells and 1×107 spleen cells from BALB/C (H-2d) donor mice. Two days after the allo-BMT, the recipient mice were given 200 mg/kg of cyclophosphamide. Subsequently, recipient mice were infused with either donor spleen cells (2×107) on day 14 or 21, or donor spleen cells (5×107) pretreated with hydrocortisone and cyclosporin A (CsA) in vitro on day 14 post-BMT.Results The median survival time of mice that received DLI on day 21 and pretreated DLI on day 14 post-BMT was longer than that of controls and the day 14 DLI group (P<0.01). No evidence of severe GVHD was observed in the day 21 DLI group nor in the day 14 treated DLI group. Mixed chimerism was confirmed in the day 14 DLI group, the day 14 treated DLI group, and the day 21 DLI group on the thirteenth day post-transplantation; full donor chimerism was observed two weeks after DLI.Conclusion Donor lymphocyte infusion after nonmyeloablative bone marrow transplantation may reduce transplantation-associated morbidity and mortality while strengthening graft-versus-leukemia effects.

  7. Clinical tolerance of total body irradiation and allogeneic bone marrow transplantation

    International Nuclear Information System (INIS)

    Total body irradiation (TBI) followed by bone marrow transplantation (BMT) is well established as a part of the conditioning regimen in high dose therapy. The objective is to report the organ toxicity investigated prospectively in patients who had conditioning regimes including fractionated TBI (FTBI) and chemotherapy. From October 2002 to December 2007 18 patients received FTBI in our institution. There were 11 males and; 7 females with median age of 20 years (range 8-50). The present study includes 11 patients with initial diagnoses; acute lymphoid leukemia (ALL), 4 - acute myeloid leukemia (AML) and 3 - chronic myeloid leukemia (GML). At the time of BMT 11 patients were in complete response, 4 in progression and 3 in chronic phase. TBI was performed on a 60Co unit in alternate prone and supine position. Three patients received nonmyeloablative regimen including 'mini' TBI of 2 Gy followed by allogeneic BMT and 15 received myeloablative regimen of 10-12 Gy FTBI. The dose rate requirement was met for TBI 5-10 cGy/min. A standardized supportive therapy was administered. During the transplantation period on day 0 and +1 of the clinical protocol the realized transplantation of the donor cells pool passed without complications in 16 of the patients and was accompanied by allergic reactions in 2 patients. Induced bone-marrow aplasia was observed in all patients during the post-transplantation period. On day +14 to +24 'entgraftment' was established in 16 patients. In 2 patients till the 35th day after the transplantation no symptoms of the grafting were observed, which imposed reinfusion of donor cells pool. Seven patients developed acute GvHD, 2 patients developed idiopathic pneumonia syndrome, 1 patient developed liver toxicity, 1 - neurological and 1 - cardiovascular toxicity. FTBI is a well tolerated therapeutic regimen in high dose therapy. The observed organ toxicity in the 18 patients in similar to that cited in reference literature. (authors)

  8. The availability of full match sibling donors and feasibility of allogeneic bone marrow transplantation in Brazil

    Directory of Open Access Journals (Sweden)

    Eid K.A.B.

    2003-01-01

    Full Text Available The feasibility of allogeneic bone marrow transplantation (alloBMT in a developing country has not yet been demonstrated. Many adverse factors including social and economic limitations may reduce the overall results of this complex and expensive procedure. Our objective was to characterize the most important clinical, social and economic features of candidates for transplantation and their potential donors as well as the influence of these factors on overall survival in a retrospective and exploratory analysis at a university hospital. From July 1993 to July 2001, candidates for BMT were referred to the Bone Marrow Transplantation Unit by Hematology and Oncology Centers from several regions of Brazil. A total of 1138 patients were referred to us as candidates for alloBMT. Median age was 25 years (range: 2 months-60 years, 684 (60.1% were males and 454 (39.9% were females. The clinical indications were severe aplastic anemia and hematological malignancies. From the total of 1138 patients, 923 had HLA-typing; 497/923 (53.8% candidates had full match donors; 352/1138 (30.8% were eligible for alloBMT. Only 235 of 352 (66.7% were transplanted. Schooling was 1st to 8th grade for 123/235 (52.3%; monthly family income ranged from US$60 (7% to more than US$400 (36%. Overall survival for patients with chronic myeloid leukemia, severe aplastic anemia and acute myeloid leukemia was 58, 60 and 30%, respectively. Thus, overall survival rates for the most frequent hematological diseases were similar to those reported in the International Registry, except for acute myeloid leukemia. This descriptive and exploratory analysis suggests the feasibility of alloBMT in a developing country like Brazil.

  9. Ex Vivo Expanded Allogeneic Mesenchymal Stem Cells With Bone Marrow Transplantation Improved Osteogenesis in Infants With Severe Hypophosphatasia.

    Science.gov (United States)

    Taketani, Takeshi; Oyama, Chigusa; Mihara, Aya; Tanabe, Yuka; Abe, Mariko; Hirade, Tomohiro; Yamamoto, Satoshi; Bo, Ryosuke; Kanai, Rie; Tadenuma, Taku; Michibata, Yuko; Yamamoto, Soichiro; Hattori, Miho; Katsube, Yoshihiro; Ohnishi, Hiroe; Sasao, Mari; Oda, Yasuaki; Hattori, Koji; Yuba, Shunsuke; Ohgushi, Hajime; Yamaguchi, Seiji

    2015-01-01

    Patients with severe hypophosphatasia (HPP) develop osteogenic impairment with extremely low alkaline phosphatase (ALP) activity, resulting in a fatal course during infancy. Mesenchymal stem cells (MSCs) differentiate into various mesenchymal lineages, including bone and cartilage. The efficacy of allogeneic hematopoietic stem cell transplantation for congenital skeletal and storage disorders is limited, and therefore we focused on MSCs for the treatment of HPP. To determine the effect of MSCs on osteogenesis, we performed multiple infusions of ex vivo expanded allogeneic MSCs for two patients with severe HPP who had undergone bone marrow transplantation (BMT) from asymptomatic relatives harboring the heterozygous mutation. There were improvements in not only bone mineralization but also muscle mass, respiratory function, and mental development, resulting in the patients being alive at the age of 3. After the infusion of MSCs, chimerism analysis of the mesenchymal cell fraction isolated from bone marrow in the patients demonstrated that donor-derived DNA sequences existed. Adverse events of BMT were tolerated, whereas those of MSC infusion did not occur. However, restoration of ALP activity was limited, and normal bony architecture could not be achieved. Our data suggest that multiple MSC infusions, following BMT, were effective and brought about clinical benefits for patients with lethal HPP. Allogeneic MSC-based therapy would be useful for patients with other congenital bone diseases and tissue disorders if the curative strategy to restore clinically normal features, including bony architecture, can be established.

  10. Total Body Irradiation for Allogeneic Bone Marrow Transplantation in Chronic Myelogenous Leukemia

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Su Mi; Choi, Ihl Bohng; Kang, Ki Mun; Kim, In Ah; Shinn, Kyung Sub; Kim, Choon Choo; Kim, Dong Jip [Catholic University College of Medicine, Seoul (Korea, Republic of)

    1994-06-15

    Between July 1987 and December 1992, we treated 22 patients with chromic myelogenous leukemia; 14 in the chronic phase and 8 with more advanced disease. All were received with allogeneic bone marrow transplantation from HLA-identical sibling donors after a total body irradiation (TBI) cyclophosphamide conditioning regimen. Patients were non-randomly assigned to either 1200 cGy/6 fractions/3 days (6 patients) or 1320 cGy/8 fractions/4 days (16 patients) by dose of TBI. Of the 22 patients, 8 were prepared with cyclophosphamide alone, 14 were conditioned with additional adriamycin or daunorubicin. To prevent graft versus host disease, cyclosporine was given either alone or in conjunction with methotrexate. The actuarial survival and leukemic-free survival at four years were 58.5% and 41.2%, respectively, and the relapse rate was 36% among 22 patients. There was a statistically significant difference in survival between the patients in chronic phase and more advanced phase (76% vs 33%, p=0.05). The relapse rate of patients receiving splenectomy was higher than that of patients receiving splenic irradiation (50% vs 0%, p=0.04). We conclude that the probability of cure is highest if transplantation is performed while the patient remains in the chronic phase.

  11. Use of leflunomide in an allogeneic bone marrow transplant recipient with refractory cytomegalovirus infection.

    Science.gov (United States)

    Avery, R K; Bolwell, B J; Yen-Lieberman, B; Lurain, N; Waldman, W J; Longworth, D L; Taege, A J; Mossad, S B; Kohn, D; Long, J R; Curtis, J; Kalaycio, M; Pohlman, B; Williams, J W

    2004-12-01

    Ganciclovir-resistant cytomegalovirus (CMV) infection is an emerging problem in transplant recipients. Foscarnet resistance and cidofovir resistance have also been described, but no previous reports have suggested treatment regimens for patients with CMV refractory to all three of these drugs. Leflunomide, an immunosuppressive drug used in rheumatoid arthritis and in rejection in solid-organ transplantation, has been reported to have novel anti-CMV activity. However, its clinical utility in CMV treatment has not been described previously. We report an allogeneic bone marrow transplant recipient who developed CMV infection refractory to sequential therapy with ganciclovir, foscarnet, and cidofovir. The patient was ultimately treated with a combination of leflunomide and foscarnet. Both phenotypic and genotypic virologic analysis was performed on sequential CMV isolates. The patient's high CMV-DNA viral load became undetectable on leflunomide and foscarnet, but the patient, who had severe graft-versus-host disease (GVHD) of the liver, expired with progressive liver failure and other complications. We concluded that leflunomide is a new immunosuppressive agent with anti-CMV activity, which may be useful in the treatment of multiresistant CMV. However, the toxicity profile of leflunomide in patients with underlying GVHD remains to be defined. PMID:15489872

  12. Development of donor-derived thymic lymphomas after allogeneic bone marrow transplantation in AKR/J mice

    International Nuclear Information System (INIS)

    The transplantation of bone marrow cells from BALB/c (but not C57BL/6 and C3H/HeN) mice was observed to lead to the development of thymic lymphomas (leukemias) in AKR/J mice. Two leukemic cell lines, CAK1.3 and CAK4.4, were established from the primary culture of two thymic lymphoma, and surface phenotypes of these cell lines found to be H-2d and Thy-1.2+, indicating that these lymphoma cells are derived from BALB/c donor bone marrow cells. Further analyses of surface markers revealed that CAK1.3 is L3T4+ Lyt2+ IL2R-, whereas CAK4.4 is L3T4- Lyt2- IL2R+. Both CAK1.3 and CAK4.4 were transplantable into BALB/c but not AKR/J mice, further indicating that these cells are of BALB/c bone marrow donor origin. The cells were found to produce XC+-ecotropic viruses, but xenotropic and mink cell focus-forming viruses were undetectable. Inasmuch as thymic lymphomas are derived from bone marrow cells of leukemia-resistant BALB/c strain of mice under the allogeneic environment of leukemia-prone AKR/J mice, this animal model may serve as a useful tool not only for the analysis of leukemic relapse after bone marrow transplantation but also for elucidation of the mechanism of leukemogenesis

  13. Bone marrow cells from allogeneic bone marrow chimeras inhibit the generation of cytotoxic lymphocyte responses against both donor and recipient cells

    International Nuclear Information System (INIS)

    When added to a mixed lymphocyte culture, bone marrow cells suppress the generation of CTL activity against H-2 Ag shared by the BM cells and the stimulator cells. These cells have been referred to as veto cells and are thought to play a role in maintaining self-tolerance. We analyzed the H-2 specificity of the suppression expressed by the veto cells from H-2 incompatible bone marrow chimeras, because lymphocytes of such chimeras had been shown to be tolerant to both donor and recipient Ag when tested by CTL responses. We found that the bone marrow cells of such chimeras which were featured by non-T and non-B cell characteristics inhibited the generation of CTL directed against either donor or recipient Ag, but not against third-party Ag. These observations suggest that in allogeneic chimeras the veto or veto-like cells alter the inhibitory specificity exhibited in the recipient microenvironment and indicate that these cells are directly involved in the induction and maintenance of self-tolerance

  14. The immunodeficiency of bone marrow-transplanted patients. II. CD8-related suppression by patient lymphocytes of the response of donor lymphocytes to mitogens, antigens, and allogeneic cells

    DEFF Research Database (Denmark)

    Ødum, Niels; Hofmann, B; Jacobsen, N;

    1987-01-01

    Lymphocytes from 21 patients sampled 1-6 months after bone marrow transplantation (BMT) were tested for functional suppressor activity against marrow-donor lymphocytes in the lymphocyte transformation test. Suppression of donor responses to allogeneic (i.e. mixed lymphocyte reaction, MLR...

  15. Intravenous transplantation of allogeneic bone marrow mesenchymal stem cells and its directional migration to the necrotic femoral head

    Directory of Open Access Journals (Sweden)

    Zhang-hua Li, Wen Liao, Xi-long Cui, Qiang Zhao, Ming Liu, You-hao Chen, Tian-shu Liu, Nong-le Liu, Fang Wang, Yang Yi, Ning-sheng Shao

    2011-01-01

    Full Text Available In this study, we investigated the feasibility and safety of intravenous transplantation of allogeneic bone marrow mesenchymal stem cells (MSCs for femoral head repair, and observed the migration and distribution of MSCs in hosts. MSCs were labeled with green fluorescent protein (GFP in vitro and injected into nude mice via vena caudalis, and the distribution of MSCs was dynamically monitored at 0, 6, 24, 48, 72 and 96 h after transplantation. Two weeks after the establishment of a rabbit model of femoral head necrosis, GFP labeled MSCs were injected into these rabbits via ear vein, immunological rejection and graft versus host disease were observed and necrotic and normal femoral heads, bone marrows, lungs, and livers were harvested at 2, 4 and 6 w after transplantation. The sections of these tissues were observed under fluorescent microscope. More than 70 % MSCs were successfully labeled with GFP at 72 h after labeling. MSCs were uniformly distributed in multiple organs and tissues including brain, lungs, heart, kidneys, intestine and bilateral hip joints of nude mice. In rabbits, at 6 w after intravenous transplantation, GFP labeled MSCs were noted in the lungs, liver, bone marrow and normal and necrotic femoral heads of rabbits, and the number of MSCs in bone marrow was higher than that in the, femoral head, liver and lungs. Furthermore, the number of MSCs peaked at 6 w after transplantation. Moreover, no immunological rejection and graft versus host disease were found after transplantation in rabbits. Our results revealed intravenously implanted MSCs could migrate into the femoral head of hosts, and especially migrate directionally and survive in the necrotic femoral heads. Thus, it is feasible and safe to treat femoral head necrosis by intravenous transplantation of allogeneic MSCs.

  16. Total body irradiation and allogeneic bone marrow transplantation - Sofia University Hospital experience

    International Nuclear Information System (INIS)

    Aim of the study: To report the long-term outcome in patients with leukaemias, who had conditioning regimens including total body irradiation (TBI) prior to bone marrow transplantation (BMT), and to establish independent factors correlated with treatment outcome. Material and methods: Between January 2002 and December 2007, 18 patients, 11 males and 7 females with median age of 12 years (range 8-50), received TBI. Initial diagnoses were acute lymphoblastic leukaemia (ALL) 11 (61%), acute myeloid leukaemia (AML) 4 (22%), and chronic myeloid leukaemia (CML) 3 (17%). Pre-transplantation disease status was defined as remission 11 (61%), progression 4 (22%), and chronic phase 3 (17%). All the patients were conditioned with a high-dose chemoradiotherapy regimen including fractionated TBI delivering 10 to 12 Gy in 15 (73%) and a single fraction of 2 Gy in 3 (17%) of the cases. TBI was performed in alternate prone and supine positions with a 60 Co machine. In 13 (72%) patients transplantation was carried out from an HLA-identical related donor and in 5 (28%) from an unrelated donor. Seventeen allogeneic transplantations were of peripheral blood stem cells and 1 was of bone marrow stem cells. Post- transplantation clinical, biological, and functional evaluations were performed on days 30, 100, 180, at 1 year, and annually thereafter. Each evaluation included an assessment of the study end points: marrow chimerism, disease status (complete remission or relapse), survival status (alive or dead), treatment-related toxicity (TRT), treatment-related mortality (TRM) and graft-versus-host-disease (GvHD). Results: Median follow-up from BMT was 27 months (range 3-52). Sixteen patients achieved engraftment, 2 patients had primary graft failure. Seven of 18 (39%) evaluable patients developed acute GvHD, 6 (35%) patients developed chronic GvHD. At the time of reporting 9 of 18 patients remain alive and in remission. Nine patients died, 4 (22%) because of relapse and 5 (28%) because of

  17. EFFECTS OF INTERLEUKIN-4 ON GRANULOCYTE-MACROPHAGE-COLONY FORMATION FROM MURINE BONE MARROW CELLS AND HEMATOPOIETIC RECONSTITUTION FOLLOWING MURINE ALLOGENEIC BONE MARROW TRANSPLANTATION

    Institute of Scientific and Technical Information of China (English)

    朱康儿; KerryAtkinson

    1994-01-01

    We investigated the effects of mouse recombinant IL-4 on hematopoiesis in vitro and in vivo.IL-4 alone was found to be incapable of stimulating colony formation,but it inhibited both IL-3-and GM-CSF-induced colony for-mation by murine hematopoietic progenitor cells.In contrast,colony formation induced by G-CSF was enhanced in the presence of IL-4.We also studied the influence of IL-4 on hematopoietie reconstiution after allogeneic bone marrow transplantation in a murine model,and found that IL-4 and G-CSF was significantly suppressed by IL-4.The combination of IL-4 and GM-CSF caused a significant decrease in the absolute mumber of meutrophils.

  18. Graft-derived anti-HPA-2b production after allogeneic bone-marrow transplantation

    DEFF Research Database (Denmark)

    Taaning, E; Jacobsen, N; Morling, N

    1994-01-01

    We report on a male who received a bone-marrow allograft from his HLA identical sister for acute myelogenous leukaemia. After transplantation, the patient suffered from refractoriness to the transfusions of HLA-matched platelets and a strong platelet-specific antibody, anti-HPA-2b, of IgG1 subclass...... was demonstrated in the patient's serum. In the serum of the bone-marrow donor a weak IgG1 anti-HPA-2b was demonstrated. IgG allotyping of the patient and donor showed identical results. We could not determine the origin of the anti-HPA-2b, although we hypothesize that the anti-HPA-2b was produced...... by immunocompetent donor lymphocytes infused with the suspension of bone-marrow cells....

  19. Booster irradiation to the spleen following total body irradiation. A new immunosuppressive approach for allogeneic bone marrow transplantation

    International Nuclear Information System (INIS)

    Graft rejection presents a major obstacle for transplantation of T cell-depleted bone marrow in HLA-mismatched patients. In a primate model, after conditioning exactly as for leukemia patients, it was shown that over 99% of the residual host clonable T cells are concentrated in the spleen on day 5 after completion of cytoreduction. We have now corroborated these findings in a mouse model. After 9-Gy total body irradiation (TBI), the total number of Thy-1.2+ cells in the spleen reaches a peak between days 3 and 4 after TBI. The T cell population is composed of both L3T4 (helper) and Lyt-2 (suppressor) T cells, the former being the major subpopulation. Specific booster irradiation to the spleen (5 Gy twice) on days 2 and 4 after TBI greatly enhances production of donor-type chimera after transplantation of T cell-depleted allogeneic bone marrow. Similar enhancement can be achieved by splenectomy on day 3 or 4 after TBI but not if splenectomy is performed 1 day before TBI or 1 day after TBI, strengthening the hypothesis that, after lethal TBI in mice, the remaining host T cells migrate from the periphery to the spleen. These results suggest that a delayed booster irradiation to the spleen may be beneficial as an additional immunosuppressive agent in the conditioning of leukemia patients, in order to reduce the incidence of bone marrow allograft rejection

  20. Immunological Enhancement of Interferon Alpha Treatment to Allogeneic Bone Marrow Transplantation in Irradiated Rats

    International Nuclear Information System (INIS)

    The Influence of the biological response modifiers: interferon alpha (IFN-α) and bone marrow transplantation (BMT) on stimulation of blood cell recovery and boosting the immunological response were investigated in this work. Male rats received BMT 3 h post total body ?-irradiation of 5 Gy and were injected with 10 units of IFN-α weekly for 5 weeks. Irradiation induced a significant decrease in blood parameters, reduced glutathione (GSH) as well as bone marrow lymphocyte count and viability. Immunological data revealed that tumour necrosis factor alpha (TNF-α) and interleukin-2 (IL-2) recorded a significant depression while lipid peroxidation (MDA) was conversely elevated. White blood cells (WBC), erythrocytes (RBC), haemoglobin (Hb), haematocrit (Hct), lymphocytes and GSH in irradiated animals receiving BMT and IFN-α, were significantly elevated, while MDA was significantly depressed as compared to the irradiated group. Bone marrow lymphocytic count and viability percentage were significantly increased while IL-2 and TNF-α were normalized. The curative action of IFN-α enforcing significant innate response could trigger and augment adaptive immune response by bone marrow transplantation. Such therapies boosting both components of immunity would be considered a potential strategy for irradiation treatment

  1. Fatal Fulminant Hepatic Failure from Adenovirus in Allogeneic Bone Marrow Transplant Patients

    OpenAIRE

    Jatin M Vyas; Marasco, Wayne A.

    2012-01-01

    We report two cases of fatal hepatic failure in patients who received matched unrelated bone marrow transplantation. Both patients presented with high fevers, abnormal liver functions tests, and hypodense lesions in the liver by CT scan. Histologic examination of postmortem liver samples demonstrated extensive necrosis, and immunohistochemistry was positive for adenovirus.

  2. Fatal Fulminant Hepatic Failure from Adenovirus in Allogeneic Bone Marrow Transplant Patients

    Directory of Open Access Journals (Sweden)

    Jatin M. Vyas

    2012-01-01

    Full Text Available We report two cases of fatal hepatic failure in patients who received matched unrelated bone marrow transplantation. Both patients presented with high fevers, abnormal liver functions tests, and hypodense lesions in the liver by CT scan. Histologic examination of postmortem liver samples demonstrated extensive necrosis, and immunohistochemistry was positive for adenovirus.

  3. Early vancomycin-resistant enterococcus (VRE) bacteremia after allogeneic bone marrow transplantation is associated with a rapidly deteriorating clinical course.

    Science.gov (United States)

    Avery, R; Kalaycio, M; Pohlman, B; Sobecks, R; Kuczkowski, E; Andresen, S; Mossad, S; Shamp, J; Curtis, J; Kosar, J; Sands, K; Serafin, M; Bolwell, B

    2005-03-01

    Vancomycin-resistant enterococcal (VRE) infection is a growing threat. We studied the incidence, risk factors, and clinical course of early-onset VRE bacteremia in allogeneic hematopoietic stem cell transplant recipients. We carried out a chart review of 281 allogeneic hematopoietic stem cell transplant recipients from 1997-2003, including preparative regimen, diagnosis, status of disease, graft-versus-host disease prophylaxis, antimicrobial therapy, and survival. VRE bacteremia developed in 12/281 (4.3%) recipients; 10 (3.6%) were within 21 days of transplant. Diagnoses were acute leukemia (7), NHL (2), and MDS (1). In all, 70% had refractory/relapsed disease; 30% were in remission. In total, 50% had circulating blasts. Nine of 10 had matched unrelated donors (7/9 with CD8+ T-cell depletion). The average time to positive VRE cultures was 15 days; average WBC was 0.05, and 80% had concomitant infections. Despite treatment, all patients died within 73 days of VRE bacteremia. Intra-abdominal complications were common. Causes of death included bacterial or fungal infection, multiorgan failure, VOD, ARDS, and relapse. A total of 60% of patients engrafted neutrophils, but none engrafted platelets. Early VRE bacteremia after allogeneic bone marrow transplant is associated with a rapidly deteriorating clinical course, although not always directly due to VRE. Early VRE may be a marker for the critical condition of these high-risk patients at the time of transplant. PMID:15640812

  4. Effects of T cell depletion in radiation bone marrow chimeras. II. Requirement for allogeneic T cells in the reconstituting bone marrow inoculum for subsequent resistance to breaking of tolerance

    International Nuclear Information System (INIS)

    The ability of normal recipient-type lymphocytes to break tolerance in long-term allogenic radiation chimeras has been investigated. Reconstitution of lethally irradiated mice with a mixture of syngeneic and allogeneic T cell-depleted (TCD) bone marrow (BM) has previously been shown to lead to mixed chimerism and permanent, specific tolerance to donor and host alloantigen (3-5). If allogeneic T cells are not depleted from the reconstituting inoculum, complete allogeneic chimerism results; however, no clinical evidence for GVHD is observed, presumably due to the protective effect provided by syngeneic TCD BM. This model has now been used to study the effects of allogenic T cells administered in reconstituting BM inocula on stability of long-term tolerance. We have attempted to break tolerance in long-term chimeras originally reconstituted with TCD or non-TCD BM by challenging them with inocula containing normal, nontolerant recipient strain lymphocytes. tolerance was broken with remarkable ease in recipients of mixed marrow inocula in which both original BM components were TCD. In contrast, tolerance in chimeras originally reconstituted with non-TCD allogeneic BM was not affected by such inocula. Susceptibility to loss of chimerism and tolerance was not related to initial levels of chimerism per se, but rather to T cell depletion of allogeneic BM, since chimeras reconstituted with TCD allogeneic BM alone (mean level of allogeneic chimerism 98%) were as susceptible as mixed chimeras to the tolerance-breaking effects of such inocula. The possible contribution of GVH reactivity to this resistance was investigated using an F1 into parent strain combination. In these animals, the use of non-TCD F1 BM inocula for reconstitution did not lead to resistance to the tolerance-breaking effects of recipient strain splenocytes

  5. Allogeneic cell transplant expands bone marrow distribution by colonizing previously abandoned areas: an FDG PET/CT analysis.

    Science.gov (United States)

    Fiz, Francesco; Marini, Cecilia; Campi, Cristina; Massone, Anna Maria; Podestà, Marina; Bottoni, Gianluca; Piva, Roberta; Bongioanni, Francesca; Bacigalupo, Andrea; Piana, Michele; Sambuceti, Gianmario; Frassoni, Francesco

    2015-06-25

    Mechanisms of hematopoietic reconstitution after bone marrow (BM) transplantation remain largely unknown. We applied a computational quantification software application to hybrid 18F-fluorodeoxyglucose positron emission tomography (PET)/computed tomography (CT) images to assess activity and distribution of the hematopoietic system throughout the whole skeleton of recently transplanted patients. Thirty-four patients underwent PET/CT 30 days after either adult stem cell transplantation (allogeneic cell transplantation [ACT]; n = 18) or cord blood transplantation (CBT; n = 16). Our software automatically recognized compact bone volume and trabecular bone volume (IBV) in CT slices. Within IBV, coregistered PET data were extracted to identify the active BM (ABM) from the inactive tissue. Patients were compared with 34 matched controls chosen among a published normalcy database. Whole body ABM increased in ACT and CBT when compared with controls (12.4 ± 3 and 12.8 ± 6.8 vs 8.1 ± 2.6 mL/kg of ideal body weight [IBW], P bones, ABM increased three- and sixfold in CBT and ACT, respectively, compared with controls (0.9 ± 0.9 and 1.7 ± 2.5 vs 0.3 ± 0.3 mL/kg IBW, P transplanted BM into previously abandoned BM sites.

  6. Prevention and Control of Secondary Disease following Allogenic Bone-Marrow Transplantation

    International Nuclear Information System (INIS)

    A review is presented of the various methods found to be effective in preventing or ameliorating acute secondary disease in rodents and primates. Selective physical elimination of lymphoid cells by centrifugation over a discontinuous albumin gradient, post-transplantation administration of cyclophosphamide, amethopterin or ALS and the selection of histocompatible bone-marrow donors are considered to be the most promising methods in primares. It is not known to what extent delayed secondary disease will occur in monkeys and man in cases where acute secondary disease has been successfully avoided. (author)

  7. In Vivo Tracking of Systemically Administered Allogeneic Bone Marrow Mesenchymal Stem Cells in Normal Rats through Bioluminescence Imaging

    Directory of Open Access Journals (Sweden)

    Juan Cao

    2016-01-01

    Full Text Available Recently, mesenchymal stem cells (MSCs are increasingly used as a panacea for multiple types of disease short of effective treatment. Dozens of clinical trials published demonstrated strikingly positive therapeutic effects of MSCs. However, as a specific agent, little research has focused on the dynamic distribution of MSCs after in vivo administration. In this study, we track systemically transplanted allogeneic bone marrow mesenchymal stem cells (BMSCs in normal rats through bioluminescence imaging (BLI in real time. Ex vivo organ imaging, immunohistochemistry (IHC, and RT-PCR were conducted to verify the histological distribution of BMSCs. Our results showed that BMSCs home to the dorsal skin apart from the lungs and kidneys after tail vein injection and could not be detected 14 days later. Allogeneic BMSCs mainly appeared not at the parenchymatous organs but at the subepidermal connective tissue and adipose tissue in healthy rats. There were no significant MSCs-related adverse effects except for transient decrease in neutrophils. These findings will provide experimental evidences for a better understanding of the biocharacteristics of BMSCs.

  8. In Vivo Tracking of Systemically Administered Allogeneic Bone Marrow Mesenchymal Stem Cells in Normal Rats through Bioluminescence Imaging

    Science.gov (United States)

    Cao, Juan; Hou, Shike; Ding, Hui; Liu, Ziquan; Song, Meijuan; Qin, Xiaojing; Wang, Xue; Yu, Mengyang; Sun, Zhiguang; Liu, Jinyang; Sun, Shuli; Xiao, Peixin

    2016-01-01

    Recently, mesenchymal stem cells (MSCs) are increasingly used as a panacea for multiple types of disease short of effective treatment. Dozens of clinical trials published demonstrated strikingly positive therapeutic effects of MSCs. However, as a specific agent, little research has focused on the dynamic distribution of MSCs after in vivo administration. In this study, we track systemically transplanted allogeneic bone marrow mesenchymal stem cells (BMSCs) in normal rats through bioluminescence imaging (BLI) in real time. Ex vivo organ imaging, immunohistochemistry (IHC), and RT-PCR were conducted to verify the histological distribution of BMSCs. Our results showed that BMSCs home to the dorsal skin apart from the lungs and kidneys after tail vein injection and could not be detected 14 days later. Allogeneic BMSCs mainly appeared not at the parenchymatous organs but at the subepidermal connective tissue and adipose tissue in healthy rats. There were no significant MSCs-related adverse effects except for transient decrease in neutrophils. These findings will provide experimental evidences for a better understanding of the biocharacteristics of BMSCs. PMID:27610137

  9. In Vivo Tracking of Systemically Administered Allogeneic Bone Marrow Mesenchymal Stem Cells in Normal Rats through Bioluminescence Imaging.

    Science.gov (United States)

    Cao, Juan; Hou, Shike; Ding, Hui; Liu, Ziquan; Song, Meijuan; Qin, Xiaojing; Wang, Xue; Yu, Mengyang; Sun, Zhiguang; Liu, Jinyang; Sun, Shuli; Xiao, Peixin; Lv, Qi; Fan, Haojun

    2016-01-01

    Recently, mesenchymal stem cells (MSCs) are increasingly used as a panacea for multiple types of disease short of effective treatment. Dozens of clinical trials published demonstrated strikingly positive therapeutic effects of MSCs. However, as a specific agent, little research has focused on the dynamic distribution of MSCs after in vivo administration. In this study, we track systemically transplanted allogeneic bone marrow mesenchymal stem cells (BMSCs) in normal rats through bioluminescence imaging (BLI) in real time. Ex vivo organ imaging, immunohistochemistry (IHC), and RT-PCR were conducted to verify the histological distribution of BMSCs. Our results showed that BMSCs home to the dorsal skin apart from the lungs and kidneys after tail vein injection and could not be detected 14 days later. Allogeneic BMSCs mainly appeared not at the parenchymatous organs but at the subepidermal connective tissue and adipose tissue in healthy rats. There were no significant MSCs-related adverse effects except for transient decrease in neutrophils. These findings will provide experimental evidences for a better understanding of the biocharacteristics of BMSCs. PMID:27610137

  10. Specially modified stromal and immune microenvironment in injected bone marrow following intrabone transplantation facilitates allogeneic hematopoietic stem cell engraftment.

    Science.gov (United States)

    Chen, Chen; Su, Yingjun; Chen, Jianwu; Song, Yajuan; Zhuang, Ran; Xiao, Bo; Guo, Shuzhong

    2016-07-01

    For allogeneic hematopoietic stem cell transplantation (HSCT), the first key step is the engraftment of hematopoietic stem cells (HSCs) across the major histocompatibility complex (MHC) barrier. Intrabone bone marrow transplantation (IBBMT) could replace more recipient stromal cells with donor cells and facilitate allogeneic organ transplantation compared with the conventional intravenous approach. However, it remains unknown whether and how IBBMT reconstructs the immune microenvironment for allogeneic HSCs. We explored where the BM microenvironment changes by determining BM stromal cell chimerism and measuring the change in CXCL-12 expression and regulatory T cells in recipient BM. We found that most stromal cells were replaced by allogeneic cells in the injected BM, with higher expression of immune regulatory cytokines (interleukin-10) compared with the contralateral BM and the intravenous group BM. This difference was independent of injury caused by intrabone injection. Consistent with the microenvironment modification, the allogeneic the engraftment rate and reconstitution capacity of HSCs were enhanced in the injected BM compared with the contralateral BM and intravenous group BM. Surgical removal of the injected bone at 7 days rather than 21 days reduced the levels of allogeneic granulocytes and HSCs in the peripheral blood. In conclusion, IBBMT specially modifies stromal cells in the injected BM which provide immune protective cues that improve the engraftment of allogeneic HSCs in an early period. PMID:27090963

  11. Influence of Transplantation of Allogenic Bone Marrow Mononuclear Cells on the Left Ventricular Remodeling of Rat after Acute Myocardial Infarction

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    To probe into the influence of transplantation of allogenic bone marrow mononuclear cells (BM-MNCs) on the left ventricular remodeling of rat after acute myocardial infarction (AMD,60 male Wistar rats were evenly divided into three groups at random: control group 1, control group 2and transplantation group. In control group 1, chest was opened without ligation of coronary artery;in control group 2 and transplantation group, the left anterior descending branch of coronary artery was ligated to establish AMI model. Prepared culture medium and allogenic BM-MNCs suspension were respectively implanted the surrounding area of infracted cardiac muscle via epicardium of control group 2 and transplantation group. Four weeks after the operation, the osteopontin gene (OPN mRNA, P<0.01), type Ⅰ collagen (P<0.01) and angiotensin Ⅱ (AngⅡ, P<0.01) content in the left ventricular non-infracted myocardium, and the Ang Ⅱ density in blood plasma (P<0.05) of transplantation group and control group 2 were all significantly higher than that of control group 1. In the transplantation group, the myocardial OPN mRNA, type Ⅰ collagen and Ang Ⅱ content of non-infracted zone in left ventricle, and the Ang Ⅱ concentration in blood plasma were all significantly lower than those of control group 2 (P<0.05 for all). It is concluded that allogenic BM-MNCs transplantation may ease left ventricular remodeling after AMI by inhibiting the synthesis of type Ⅰ collagen in the cardiac muscle and down-regulating the expression of Ang Ⅱ and OPN gene.

  12. Transplantation tolerance in primates following total lymphoid irradiation and allogeneic bone marrow injection. I. Orthoptic liver allographs

    International Nuclear Information System (INIS)

    Fractionated total lymphoid irradiation (TLI) and allogeneic bone marrow (BM) injection have been reported to produce stable chimerism without graft-versus-host disease (GVHD) in inbred mice and rats and mongrel dogs, and transplantation tolerance for skin and heart grafts in rodents. This concept has been studied in outbred chacma baboons receiving orthotopic liver allografts with the use of five different irradiation protocols. Eight fractions of 200 rad to the whole torso, followed immediately by allogeneic BM injections, and liver grafts from the BM donors 3 to 4 weeks later resulted in markedly prolonged survivals of 63 to 106 days in four baboons (median survival of untreated controls 19 days). Only one of the four animals died directly from the effects of rejection. BM chimerism was demonstrated in two baboons. There were no clinical or histological signs of GVHD in any of the animals. Two fractions of TLI, totaling 800 rad, 23 hr apart and followed immediately by BM injection and liver grafting resulted in profound thrombocytopenia and death form intraperitoneal hemorrhage in four of five baboons. In one animal BM injection and liver transplantation were delayed for 75 days. The baboon is still alive more than 6 months later. Three groups received single doses of 300, 400, and 500 rad to the whole torso, followed by allogeneic BM injections 1 and 2 weeks later, and liver transplants from their BM donors after an additional 3 to 4 weeks. The four baboons receiving 300 rad survived for 42, 86, 123, and >180 days. Two of the four baboons receiving 400 rad died of septic intraabdominal complications with minimal or no evidence of rejection. Fourh of the five baboons receiving 500 rad died from rejection

  13. Ceacam1 separates graft-versus-host-disease from graft-versus-tumor activity after experimental allogeneic bone marrow transplantation.

    Directory of Open Access Journals (Sweden)

    Sydney X Lu

    Full Text Available Allogeneic bone marrow transplantation (allo-BMT is a potentially curative therapy for a variety of hematologic diseases, but benefits, including graft-versus-tumor (GVT activity are limited by graft-versus-host-disease (GVHD. Carcinoembryonic antigen related cell adhesion molecule 1 (Ceacam1 is a transmembrane glycoprotein found on epithelium, T cells, and many tumors. It regulates a variety of physiologic and pathological processes such as tumor biology, leukocyte activation, and energy homeostasis. Previous studies suggest that Ceacam1 negatively regulates inflammation in inflammatory bowel disease models.We studied Ceacam1 as a regulator of GVHD and GVT after allogeneic bone marrow transplantation (allo-BMT in mouse models. In vivo, Ceacam1(-/- T cells caused increased GVHD mortality and GVHD of the colon, and greater numbers of donor T cells were positive for activation markers (CD25(hi, CD62L(lo. Additionally, Ceacam1(-/- CD8 T cells had greater expression of the gut-trafficking integrin α(4β(7, though both CD4 and CD8 T cells were found increased numbers in the gut post-transplant. Ceacam1(-/- recipients also experienced increased GVHD mortality and GVHD of the colon, and alloreactive T cells displayed increased activation. Additionally, Ceacam1(-/- mice had increased mortality and decreased numbers of regenerating small intestinal crypts upon radiation exposure. Conversely, Ceacam1-overexpressing T cells caused attenuated target-organ and systemic GVHD, which correlated with decreased donor T cell numbers in target tissues, and mortality. Finally, graft-versus-tumor survival in a Ceacam1(+ lymphoma model was improved in animals receiving Ceacam1(-/- vs. control T cells.We conclude that Ceacam1 regulates T cell activation, GVHD target organ damage, and numbers of donor T cells in lymphoid organs and GVHD target tissues. In recipients of allo-BMT, Ceacam1 may also regulate tissue radiosensitivity. Because of its expression on both the

  14. Fate of bone marrow mesenchymal stem cells following the allogeneic transplantation of cartilaginous aggregates into osteochondral defects of rabbits.

    Science.gov (United States)

    Yoshioka, Tomokazu; Mishima, Hajime; Kaul, Zeenia; Ohyabu, Yoshimi; Sakai, Shinsuke; Ochiai, Naoyuki; Kaul, Sunil C; Wadhwa, Renu; Uemura, Toshimasa

    2011-06-01

    The purpose of this study was to track mesenchymal stem cells (MSCs) labelled with internalizing quantum dots (i-QDs) in the reparative tissues, following the allogeneic transplantation of three-dimensional (3D) cartilaginous aggregates into the osteochondral defects of rabbits. QDs were conjugated with a unique internalizing antibody against a heat shock protein-70 (hsp70) family stress chaperone, mortalin, which is upregulated and expressed on the surface of dividing cells. The i-QDs were added to the culture medium for 24 h. Scaffold-free cartilaginous aggregates formed from i-QD-labelled MSCs (i-MSCs), using a 3D culture system with chondrogenic supplements for 1 week, were transplanted into osteochondral defects of rabbits. At 4, 8 and 26 weeks after the transplantation, the reparative tissues were evaluated macroscopically, histologically and fluoroscopically. At as early as 4 weeks, the defects were covered with a white tissue resembling articular cartilage. In histological appearance, the reparative tissues resembled hyaline cartilage on safranin-O staining throughout the 26 weeks. In the deeper portion, subchondral bone and bone marrow were well remodelled. On fluoroscopic evaluation, QDs were tracked mainly in bone marrow stromata, with some signals detected in cartilage and the subchondral bone layer. We showed that the labelling of rabbit MSCs with anti-mortalin antibody-conjugated i-QDs is a tolerable procedure and provides a stable fluorescence signal during the cartilage repair process for up to 26 weeks after transplantation. The results suggest that i-MSCs did not inhibit, and indeed contributed to, the regeneration of osteochondral defects.

  15. Studies of allogeneic bone marrow and spleen cell transplantation in a murine model using ultraviolet-B light

    International Nuclear Information System (INIS)

    Ultraviolet irradiation inhibits alloreactive and mitogen-induced responses and might reduce both graft-versus-host and host-versus-graft reactions after bone marrow transplantation (BMT). We have studied proliferative responses to mitogens and reactivity in mixed lymphocyte culture after irradiation with ultraviolet (UV)-B light using splenocytes from Balb/c (H-2d) and CBA (H-2k) mice. Response to mitogens and in MLC was strongly inhibited by 20 J/m2 and abolished at 50 J/m2. Clonogenic cell recovery (CFU-GM; CFU-S) after UV-B irradiation was also reduced. When bone marrow and spleen cells were transplanted from parent (Balb/c) animals into F1 hybrid (Balb/c X CBA) recipients, all animals died with features indicative of graft-versus-host disease (GVHD) in 34 days. If the grafts were first irradiated with 100 J/m2 of UV-B at a mean wavelength of 310 nm, then 76% survived to day 80 when they were killed and shown to have normal marrow cellularity. The remainder died in marrow aplasia or of GVHD. H-2 typing in a group of surviving recipients showed either donor hematopoiesis only (8 of 15), mixed allogeneic chimerism (5 of 15), or recipient type hematopoiesis (2 of 15). Higher doses (200 to 300 J/m2) were detrimental to survival with 88% of recipients dying in marrow aplasia. Syngeneic BMT in Balb/c mice showed slower hematopoietic reconstitution when the grafts were first irradiated with 100 J/m2. After BMT from Balb/c to CBA mice all recipients of unirradiated grafts died within 54 days. By contrast, after graft irradiation with 100 J/m2 survival of recipient animals to day 80 was 59%. If these grafts were treated with 50 J/m2 survival was only 26% with an increase in deaths due to GVHD. Hematopoiesis at day 80 in a group of survivors studied by Ig heavy chain allotyping indicated donor type hematopoiesis in 6 of 10 (50 J/m2) and 2 of 9 (100 J/m2)

  16. Acellular allogeneic nerve grafting combined with bone marrow mesenchymal stem cell transplantation for the repair of long-segment sciatic nerve defects:biomechanics and validation of mathematical models

    Institute of Scientific and Technical Information of China (English)

    Ya-jun Li; Bao-lin Zhao; Hao-ze Lv; Zhi-gang Qin; Min Luo

    2016-01-01

    We hypothesized that a chemically extracted acellular allogeneic nerve graft used in combination with bone marrow mesenchymal stem cell transplantation would be an effective treatment for long-segment sciatic nerve defects. To test this, we established rabbit models of 30 mm sciatic nerve defects, and treated them using either an autograft or a chemically decellularized allogeneic nerve graft with or without simultaneous transplantation of bone marrow mesenchymal stem cells. We compared the tensile properties, electrophysiological function and morphology of the damaged nerve in each group. Sciatic nerves repaired by the allogeneic nerve graft combined with stem cell trans-plantation showed better recovery than those repaired by the acellular allogeneic nerve graft alone, and produced similar results to those observed with the autograft. These ifndings conifrm that a chemically extracted acellular allogeneic nerve graft combined with transplanta-tion of bone marrow mesenchymal stem cells is an effective method of repairing long-segment sciatic nerve defects.

  17. Successful repigmentation of vitiligo after allogeneic bone marrow transplantation for Hodgkin′s lymphoma by autologous noncultured melanocyte-keratinocyte transplantation

    Directory of Open Access Journals (Sweden)

    Huijuan Tang

    2015-01-01

    Full Text Available The treatment of vitiligo is derisory since the pathogenesis of vitiligo is not clear at present. Most conservative treatments are difficult to approach satisfactory therapy. So transplantation is the only way left when the disease becomes insensitive to those conservative treatments. Here we describe an 18-year-old patient who developed vitiligo, which was triggered by graft-versus-host disease after a allogeneic bone marrow transplantation for the treatment of Hodgkin′s lymphoma from his sister. In the following treatment to vitiligo, the patient successfully performed the transplantation of autologous uncultured melanocyte on the premise of poor reaction to other conservative methods. We infer that transplantation can be a treatment of the vitiligo after allogeneic bone marrow transplantation.

  18. Reduced graft-versus-host disease-inducing capacity of T cells after activation, culturing, and magnetic cell sorting selection in an allogeneic bone marrow transplantation model in rats

    NARCIS (Netherlands)

    Weijtens, M; van Spronsen, A; Hagenbeek, A; Braakman, E; Martens, A

    2002-01-01

    Graft-versus-host disease (GvHD), a major complication of allogeneic bone marrow transplantation, has been ascribed to mature T cells in the graft. Because T cells play an important role in engraftment of the bone marrow and decrease the probability of relapse of leukemia, a treatment strategy was d

  19. Application of allogeneic bone marrow cells in view of residual alloreactivity: sirolimus but not cyclosporine evolves tolerogenic properties.

    Directory of Open Access Journals (Sweden)

    Kai Timrott

    Full Text Available Application of bone marrow cells (BMC is a promising strategy for tolerance induction, but usually requires strong depletion of the host immune system. This study evaluates the ability of immunosuppressants to evolve tolerogenic properties of BMC in view of residual alloreactivity.The rat model used a major histocompatibility complex (MHC class II disparate bone marrow transplantation (BMT setting (LEW.1AR1 (RT1auu → LEW.1AR2 (RT1aau. Heart grafts (LEW.1WR1 (RT1uua were disparate for the complete MHC to recipients and for MHC class I to BMC donors. Limited conditioning was performed by total body irradiation of 6 Gy. Cyclosporine (CsA or Sirolimus (Srl were administered for 14 or 28 days. Transplantation of heart grafts (HTx was performed at day 16 or at day 100 after BMT. Chimerism and changes in the T cell pool were detected by flow cytometry.Mixed chimeras accepted HTx indefinitely, although the composition of the regenerated T cell pool was not changed to a basically donor MHC class II haplotype. Non-chimeric animals rejected HTx spontaneously. BMC recipients, who received HTx during T cell recovery at day 16, accepted HTx only after pre-treatment with Srl, although chimerism was lost. CsA pre-treatment led to accelerated HTx rejection as did isolated application of BMC.Srl evolves tolerogenic properties of allogeneic BMC to achieve indefinite acceptance of partly MHC disparate HTx despite residual alloreactivity and in particular loss of chimerism.

  20. Role of total body irradiation as based on the comparison of preparation regimens for allogeneic bone marrow transplantation for acute leukemia in first complete remission

    International Nuclear Information System (INIS)

    The role of total body irradiation (TBI) for allogeneic bone marrow transplantation (BMT) for acute leukemia in first complete remission was reevaluated in this study. From Japanese BMT Registry, data of 123 acute leukemia patients in first complete remission who underwent allogeneic bone marrow transplantation in 22 hospitals between 1988 and 1990 were available for the present comparative study of preparation regimens with or without total body irradiation. Two-year survivals were 77% and 51% in the TBI containing regimen group and in the non-TBI regimen group, respectively (p=0.0010). Corresponding two-year relapse rates were 16% and 37%, respectively (p=0.0197). Corresponding probabilities of developing interstitial pneumonitis were 21% and 24%, respectively (p=0.8127). The analysis of causes of death indicated that non-TBI regimen increased the incidence of septicemia and lethal organ failures, such as liver, heart, lung and other multiple sites. It was emphasized that an additional role of total body irradiation was to disperse the treatment-related toxicity in allogeneic bone marrow transplantation for acute leukemia. (orig.)

  1. Efficient natural defense mechanisms against Listeria monocytogenes in T and B cell-deficient allogeneic bone marrow radiation chimeras. Preactivated macrophages are the main effector cells in an early phase after bone marrow transfer

    International Nuclear Information System (INIS)

    Radiation chimeras in the early phase after bone marrow transplantation are a good model to study the efficiency of the body's nonspecific defense system represented by macrophages (M phi), polymorphonuclear cells (PMN), and NK cells. These cell types are present in large numbers in spleen and liver at that time, whereas the specific immune system represented by T and B cells is functionally deficient. We previously reported enhanced activities in vitro of M phi (and PMN) from recipient animals in an early phase after allogeneic bone marrow transfer. We here demonstrate that these activities result in enhanced spontaneous resistance against Listeria monocytogenes in vivo: CFU of L. monocytogenes in spleen and liver 48 h after infection were about 1 or 2 to 4 log steps less than in untreated control mice of donor or host haplotype. This enhanced resistance decreased over the 4-mo period after marrow transfer. Preactivated M phi were identified as the most important effector cells. Isolated from spleen and peritoneal cavity, they performed enhanced killing of phagocytosed Listeria. Such preactivated M phi occurred in recipient animals after transfer of allogeneic but not of syngeneic bone marrow. The precise mechanism of M phi activation in the allogeneic radiation chimera in the complete absence of any detectable T cell function is not clear at present. However, these preactivated M phi display an important protective effect against L. monocytogenes: chimeras could eliminate Listeria without acquisition of positive delayed-type sensitivity when infected with 10(3) bacteria. An inoculum of 5 . 10(3) L. monocytogenes resulted either in prolonged survival compared with normal mice of the recipient haplotype or in definitive survival accompanied by a positive delayed-type sensitivity

  2. [Detection of mixed lymphoid chimerism after allogeneic bone marrow transplantation: demonstration by interphase cytogenetics in paraffin-embedded tissue].

    Science.gov (United States)

    Friedrich, T; Ott, G; Kalla, J; Helbig, W; Schwenke, H; Kubel, M; Pönisch, W; Feyer, P; Friedrich, A

    1994-01-01

    In bone marrow transplantation (BMT) the detection of residual host lymphoid or haematopoietic cells surviving conditioning therapy is because of its association to graft-versus-host disease, graft-versus-leukemia reaction, and relapse of leukemia a matter of great interest. We studied the occurrence of this mixed lymphoid chimerism (MC) in the formol-fixed lymphatic tissue of lymph nodes and spleen from 21 autopsies after allogeneic sex-mismatched BMT (5 females, 16 males, survival 5 to 1140 days after BMT). In situ hybridisation with biotinylated centromer-specific anti-X- and anti-Y-chromosome probes was performed on pepsin-digested paraffin sections. The number of double X-, single X-, and Y-chromosome bearing cells was analysed microscopically. Because of artefacts only 14 cases remained for valid investigation. MC was detected in 6 cases (5 out of 11 males 5 days to 840 days and 1 out of 3 females 76 days after BMT). MC occurred after whole body irradiation with 10 Gy (n = 5) and 7 Gy (n = 1). In 1 autopsy relapse of leukemia caused host cell infiltration. Cases with MC did not express histological signs of acute or chronic graft-versus-host disease, but 5 out of 8 with complete lymphoid chimerism did. The sensitivity of interphase cytogenetics on paraffin embedded tissue is low.

  3. Brain MR imaging abnormalities in pediatric patients after allogeneic bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    Sally Emad-Eldin

    2014-12-01

    Conclusion: CNS complications after allogenic BMT in pediatric patients could cause a significant clinical problem. MRI can provide early diagnosis and follow-up to monitor treatment changes. Knowing the onset of the presentation of the complication in relation to the chronology of the transplant is important as it provides significant guidance on which causes to consider.

  4. Long-term observations of autoimmune-prone mice treated for autoimmune disease by allogeneic bone marrow transplantation

    International Nuclear Information System (INIS)

    Long-term effects of allogeneic bone marrow transplantation (ABMT) across major histocompatibility complex barriers were studied in (NZB x NZW)F1 (B/W), BXSB, and MRL/Mr-lpr-lpr (MRL/lpr) mice with established autoimmune disease at the time of ABMT. In the BXSB or B/W mice, ABMT cured all aspects of autoimmune disease. Glomerular damage, revealed by histological study was dramatically improved. Serological abnormalities and immunologic functions also were normalized. Correction of autoimmune disease and advanced renal disease in BXSB and B/W mice regularly lasted greater than 5-6 mo and even 1 yr after ABMT. In the MRL/lpr mice, however, autoimmune and renal disease at first improved but then recurred after ABMT, apparently because of intolerance of mice for high doses of irradiation and a high degree of resistance of recipient stem cells to irradiation. In this model, H-2 typing revealed that by the time of relapse, immunocompetent cells of the chimeric mice had been replaced by host (MRL/lpr; H-2k) cells. B220+ Ly-1+ cells, present in increased numbers in untreated MRL/lpr mice, initially returned to normal levels after ABMT but then reappeared in the MRL/lpr mice that had received marrow from donors having few such lymphocytes. Thus, our results show that MRL/lpr mice possess abnormal radioresistant stem cells and provide impressive evidence that the origin of autoimmune diseases in this strain, as in the several other strains studied, resids in abnormalities present in stem cells

  5. Chimerism of allogeneic mesenchymal cells in bone marrow, liver, and spleen after mesenchymal stem cells infusion.

    Science.gov (United States)

    Meleshko, Alexander; Prakharenia, Irina; Kletski, Semen; Isaikina, Yanina

    2013-12-01

    Although an infusion of culture-expanded MSCs is applied in clinic to improve results of HSCs transplantation and for a treatment of musculoskeletal disorders, homing, and engraftment potential of culture-expanded MSC in humans is still obscure. We report two female patients who received allogeneic BM transplantation as a treatment of hematological diseases and a transplantation of MSCs from third-party male donors. Both patients died within one yr of infectious complications. Specimens of paraffin-embedded blocks of tissues from transplanted patients were taken. The aim of the study was to estimate possible homing and engraftment of allogeneic BM-derived MSCs in some tissues/organs of recipient. Sensitive real-time quantitative PCR analysis was applied with SRY gene as a target. MSC chimerism was found in BM, liver, and spleen of both patients. We conclude that sensitive RQ-PCR analysis is acceptable for low-level chimerism evaluation even in paraffin-embedded tissue specimens.

  6. Induction of allogeneic unresponsiveness in adult dogs by irradiation and bone marrow transplantation: Implication of Ia-positive bone marrow stem cells

    International Nuclear Information System (INIS)

    A number of investigators have suggested in recent years that placement of hemopoietic cells into an irradiated host milieu may trigger such cells to undergo a transient cycle of replication and differentiation which recapitulates the events of immunological ontogeny-including fetal erythropoiesis, production of newborn Υ-chains in adults, and generation of fetal and newborn-type lymphoid cells. In an extension of this hypothesis to transplantation, supralethally irradiated dogs were reconstituted with their own stored marrow, followed within 12 to 18 hr by the transplanation of a kidney allograft obtained from a DLA identical donor. This sequence resulted in long-term unresponsiveness to the transplanted kidneys in the recipients without further treatment. The 60% incidence of success obtained with this procedure could be improved further if the host's own stored marrow was treated in vitro with methylprednisolone (MPd) prior to replacement of the marrow following irradiation. In an attempt to analyze the possible changes in the cellular composition of marrow that might have been associated with this result, a serial cytofluorographic analysis of marrow before and after treatment with MPd was performed. For this purpose, cell samples obtained before and after exposure of bone marrow to MPd were studied in an Ortho 50H Cell Sorter after staining with acridine orange by using green fluorescence for DNA and red fluroescence for RNA, or, alternatively, using 900 scatter for the X axis and a narrow forward scatter for the Y axis, without addition of any stain

  7. Effects of X-rays and γ-rays on reconstitution of hematopoiesis and immunity after allogeneic bone marrow transplantation

    International Nuclear Information System (INIS)

    Objective: To determine the conditioning regimen suitable for mice allogeneic hematopoietic stem cell transplantation (allo-HSCT). Methods: Twelve BALB/c mice were randomly divided into 2 equal groups to undergo X-ray irradiation by linear accelerator at the dose of 7.0 Gy (pure X-ray group) or 60Co source irradiation at the dose of 7.0 Gy (pure γ-ray group). Thirty mice were randomly divided into 2 equal groups to undergo X-ray irradiation and then infusion of bone marrow from donor mice via caudal vein (X-ray + transplantation group) or γ-ray and then infusion of bone marrow via caudal vein (γ-ray + transplantation group). 3, 5, 7, 10, 15, 20, and 30 d later peripheral blood samples were collected to calculate the number of white blood cells (WBCs) and detect the chimeric rates of lymphocytes by flow cytometry. 5, 10, and 20 d after irradiation 15 mice were killed with their lung, liver, small intestine, spleen, and femurs taken out to undergo pathological examination. Results: The survival rates during the period 5-15 days of the γ-ray + transplantation group were all significantly higher than those of the X-ray + transplantation group. The pathological changes of organs of the X-ray + transplantation group were all more severe than those of the γ-ray + transplantation group. Since the fifth day after transplantation cells originating from the donor began to appear in the peripheral blood. The chimeric rate of the γ-ray + transplantation group 10 days after transplantation was (95.53± 2.57) %. The chimeric rates 5, 10, and 20 days after transplantation of the γ-ray + transplantation group were all significantly higher than those of the X-ray + transplantation group (t=15.263, 3.256, P<0.05). The WBC count of both irradiation groups decreased to the lowest level 5 d later and began to increase 10 days after transplantation and the WBC counts of the γ-ray + transplantation group 10 and 20 days after transplantation were both significantly higher than

  8. An improved anti-leukemic effect achieved with donor progenitor cell infusion for relapse patients after allogeneic bone marrow transplantation

    Institute of Scientific and Technical Information of China (English)

    黄晓军; 郭乃榄; 任汉云; 张耀臣; 高志勇; 陆道培

    2003-01-01

    Objective To observe the antileukemic effect in relapse patients by infusion of donor immunocompetent cells with or without granulocyte colony-stimulating factor (G-CSF) mobilization.Methods Twenty patients with leukemia in relapse after allogeneic bone marrow transplantation (allo-BMT) were treated with chemotherapy followed by donor-derived lymphocytes (DDL) without G-CSF mobilization (Group A, n=11), or donor peripheral blood progenitor cells (PBPCs) with G-CSF mobilization (Group B, n=9).Results Five patients in Group A were in hematologic relapse. After DDL infusion, 3 of 5 patients had a temporary complete remission (CR) and relapsed after 3, 7 and 10 months, respectively. One achieved partial remission and died of interstitial pneumonia; and the other one showed no response. Another 6 patients in Group A were in cytogenetic relapse or central nerve system (CNS) leukemia, and all achieved CR and remained in disease free survival (DFS) for 10 to 98 months after DDL infusion. All 9 patients in group B were in hematologic relapse. Three patients with chronic myeloid leukemia (CML) had cytogenetic and molecular remission for 16, 35 and 51 months, respectively after PBPC infusion; and 5 patients with acute lymphoid leukemia (ALL) had CR and were still in CR for 10 to 18 months except 1 patient relapsed soon. And the other one with AML showed no response to the therapy.Conclusion Donor immunocompetent cells infusion is an effective therapy for relapsed leukemia after allo-BMT, especially for the patients with early (molecular and cytogenetic) or CNS relapse. Infusion of donor PBPC mobilized by G-CSF seems to have more potentiated graft-versus-leukemia (GVL) effect than DDL infusion.

  9. Numerical impairment of nestin(+) bone marrow niches in acute GvHD after allogeneic hematopoietic stem cell transplantation for AML.

    Science.gov (United States)

    Medinger, M; Krenger, W; Jakab, A; Halter, J; Buser, A; Bucher, C; Passweg, J; Tzankov, A

    2015-11-01

    The nestin(+) perivascular bone marrow (BM) stem cell niche (N(+)SCN) may be involved in GvHD. To investigate whether acute GvHD (aGvHD) reduces the number of N(+)SCN, we examined patients with AML who had undergone allogeneic hematopoietic stem cell transplantation. In the test cohort (n=8), the number of N(+)SCN per mm(2) in BM biopsies was significantly reduced in aGvHD patients at the time of aGvHD compared with patients who did not have aGvHD (1.2±0.78 versus 2.6±0.93, P=0.04). In the validation cohort (n=40), the number of N(+)SCN was reduced (1.9±0.99 versus 2.6±0.90 N(+)SCN/mm(2), P=0.05) in aGvHD patients. Receiver operating curves suggested that the cutoff score that best discriminated between patients with and without aGvHD was 2.29 N(+)SCN/mm(2). Applying this cutoff score, 9/11 patients with clinically relevant aGvHD (⩾grade 2) and 13/20 with any type of GvHD had decreased N(+)SCN numbers compared with only 10/29 patients without clinically relevant aGvHD (P=0.007) and 6/20 patients without any type of GvHD (P=0.028). In patients tracked over time, N(+)SCN density returned to normal after aGvHD resolved or remained stable in patients who did not have aGvHD. Our results show a decrease in the number of N(+)SCN in aGvHD.

  10. COMPROMISING EFFECT OF LOW DOSE-RATE TOTAL-BODY IRRADIATION ON ALLOGENEIC BONE-MARROW ENGRAFTMENT

    NARCIS (Netherlands)

    VANOS, R; KONINGS, AWT; DOWN, JD

    1993-01-01

    The protraction of total body irradiation (TBI) to a continuous low dose-rate has been investigated for its effect on donor marrow engraftment in murine bone marrow transplant (BMT) models of varying histocompatibility. Three different BMT combinations were used: syngeneic [B6-Gpi-1a --> B6-Gpi-1b],

  11. Effect of allogeneic bone marrow derived stromal cells on induced third-degree skin burn healing in mouse

    Directory of Open Access Journals (Sweden)

    Leyla Soleymani

    2014-10-01

    Conclusion: This experimental modulation of wound healing suggests that bone marrow-derived stromal cells can significantly enhance the rate of wound healing possibly through stimulation of granulation tissue, angiogenesis, fibroblast proliferation and collagen deposition.

  12. Immunity of patients surviving 20 to 30 years after allogeneic or syngeneic bone marrow transplantation.

    Science.gov (United States)

    Storek, J; Joseph, A; Espino, G; Dawson, M A; Douek, D C; Sullivan, K M; Flowers, M E; Martin, P; Mathioudakis, G; Nash, R A; Storb, R; Appelbaum, F R; Maloney, D G

    2001-12-15

    The duration of immunodeficiency following marrow transplantation is not known. Questionnaires were used to study the infection rates in 72 patients surviving 20 to 30 years after marrow grafting. Furthermore, in 33 of the 72 patients and in 16 donors (siblings who originally donated the marrow) leukocyte subsets were assessed by flow cytometry. T-cell receptor excision circles (TRECs), markers of T cells generated de novo, were quantitated by real-time polymerase chain reaction. Immunoglobulin G(2) (IgG(2)) and antigen-specific IgG levels were determined by enzyme-linked immunosorbent assay. Infections diagnosed more than [corrected] 15 years after transplantation occurred rarely. The average rate was 0.07 infections per patient-year (one infection every 14 years), excluding respiratory tract infections, gastroenteritis, lip sores, and hepatitis C. The counts of circulating monocytes, natural killer cells, B cells, CD4 T cells, and CD8 T cells in the patients were not lower than in the donors. The counts of TREC(+) CD4 T cells in transplant recipients younger than age 18 years (at the time of transplantation) were not different from the counts in their donors. In contrast, the counts of TREC(+) CD4 T cells were lower in transplant recipients age 18 years or older, even in those with no history of clinical extensive chronic graft-versus-host disease, compared with their donors. The levels of total IgG(2) and specific IgG against Haemophilus influenzae and Streptococcus pneumoniae were similar in patients and donors. Overall, the immunity of patients surviving 20 to 30 years after transplantation is normal or near normal. Patients who received transplants in adulthood have a clinically insignificant deficiency of de novo-generated CD4 T cells, suggesting that in these patients the posttransplantation thymic insufficiency may not be fully reversible. PMID:11739150

  13. Restricted antibody formation to sheep erythrocytes of allogeneic bone marrow chimeras histoincompatible at the K end of the H-2 complex

    International Nuclear Information System (INIS)

    Employing a new method for allogeneic bone marrow transplantation, irradiation chimeras constructed from various combinations of marrow cells from B10 H-2 recombinant mice and AKR recipients were prepared. Though these chimeras had well-developed populations of T and B cells, they showed strikingly different patterns of responses in the primary antibody formation to sheep erythrocytes (SRBC), a T dependent antigen. These are (a) AKR mice treated with C57BL/10 cells, [B10 leads to AKR] fully H-2 incompatible, and AKR mice treated with B10.A (5R) cells, [5R leads to AKR] I-J,E compatible chimeras that were almost completely unresponsive to SRBC; (b) AKR mice treated with B10.BR cells [BR leads to AKR] fully H-2 compatible, and AKR mice treated with B10 AKM cells, [AKM leads to AKR] chimeras where donor and recipient differed only at H-2D, showed the same number of plaque-forming cells (PFC) as B10 control mice; (c) AKR mice treated with B10.A cells, [B10 leads to AKR] chimeras, where donor and recipient were matched at H-2K-I-E region, showed about one-half the number of PFC as the control mice. From these results we conclude that in allogeneic bone marrow chimeras primary antibody response to T-dependent antigen, such as SRBC, is generated when at least the K end of the H-2 complex is compatible between donor and recipient

  14. Kinetics of lymphocyte reconstitution after allogeneic bone marrow transplantation: markers of graft-versus-host disease.

    Science.gov (United States)

    Zinöcker, Severin; Sviland, Lisbet; Dressel, Ralf; Rolstad, Bent

    2011-07-01

    GVHD causes extensive morbidity and mortality in patients who receive alloHCT. Predictive and reliable markers for GVHD are currently lacking but required to improve the safety and accessibility of alloHCT. We present an experimental rat model of myeloablative total body irradiation and fully mismatched major and minor histoincompatible, T cell-depleted BMT, followed by delayed infusion of donor lymphocytes. This treatment, in contrast to marrow transplantation alone, resulted in severe aGVHD and 100% lethality within 2-6 weeks. We investigated the reconstitution kinetics and phenotypes of donor leukocyte subpopulations as well as the histopathology of selected organs that may correlate with GVHD, with the goal to find potential disease-related markers. We observed histological changes mainly confined to the skin, with degenerative changes in the basal layer. LNs and spleen showed deranged architecture with markedly increased accumulation of lymphocytes, whereas the gut, liver, and lungs appeared normal. Of the lymphocyte markers tested, donor-derived CD62L(+) T cells were markedly decreased in animals suffering from GVHD. Furthermore, we observed peripheral depletion of CD4(+)CD25(hi)FoxP3(+) T(reg), which was in contrast to controls. The relative frequency of these lymphocyte subpopulations in blood may therefore serve as accessible cellular markers of aGVHD. We propose that the animal model presented is instructive for the identification of clinically relevant markers of GVHD, which could improve disease diagnosis and management in alloHCT.

  15. Total body irradiation, busulfan and cyclophosphamide as a conditioning regimen for allogeneic bone marrow transplantation for patients with hematological malignancies

    International Nuclear Information System (INIS)

    Between May 1989 and October 1998, 44 patients with hematological malignancies received allogeneic bone marrow transplantation from HLA-matched related (n=25), unrelated (n=16) or 1 locus HLA-mismatched related donors (n=3). Busulfan (BU) (8 mg/kg) and cyclophosphamide (CY) (90 mg/kg) with fractionated total body irradiation (TBI) (12 Gy) (n=30) or BU (16 mg/kg) and CY (120 mg/kg) (n=14) were given as conditioning regimen. All patients receiving BU/CY were transplanted from related donors in first remission of acute leukemia or in first chronic phase of CML (standard risk group; S-group). For 30 patients receiving TBI/BU/CY, 13 were transplanted in standard risk and 17 were in advanced stage of hematological malignancies (high risk group; H-group); 7 in S-group and 9 in H-group transplanted from unrelated donor. Severe regimen-related toxicity was found in 10% of patients receiving TBI/BU/CY (one in standard risk group and 2 in high risk group), but not found in patients receiving BU/CY. Probability of disease free survival (DFS) at 5 years was 38% in patients receiving BU/CY, and 43% in patients receiving TBI/BU/CY (52% in S-group and 35% in H-group). For patients transplanted from related donor at standard risk, probability of DFS was higher in patients receiving TBI/BU/CY than in patients receiving BU/CY (83% vs 38%; p<0.05). For patients receiving TBI/BU/CY as preparatory regimen, probability of DFS was higher in patients transplanted from related donors than in patients transplanted from unrelated donors (63% vs 29%; p<0.05), that was due to lower rate of non-relapse mortality (8% vs 61%; p<0.001). Probability or relapse was 33% in patients receiving BU/CY, and 28% in patients receiving TBI/BU/CY (23%, in S-group and 31% even in H-group), and no significant difference was found between the three groups. We conclude that this TBI/BU/CY regimen is well tolerated and is very effective in reducing relapse and improving survival, especially in standard risk

  16. Total body irradiation, busulfan and cyclophosphamide as a conditioning regimen for allogeneic bone marrow transplantation for patients with hematological malignancies

    Energy Technology Data Exchange (ETDEWEB)

    Kai, Shunro; Misawa, Mahito; Hara, Hiroshi [Hyogo Coll. of Medicine, Nishinomiya (Japan)

    1999-08-01

    Between May 1989 and October 1998, 44 patients with hematological malignancies received allogeneic bone marrow transplantation from HLA-matched related (n=25), unrelated (n=16) or 1 locus HLA-mismatched related donors (n=3). Busulfan (BU) (8 mg/kg) and cyclophosphamide (CY) (90 mg/kg) with fractionated total body irradiation (TBI) (12 Gy) (n=30) or BU (16 mg/kg) and CY (120 mg/kg) (n=14) were given as conditioning regimen. All patients receiving BU/CY were transplanted from related donors in first remission of acute leukemia or in first chronic phase of CML (standard risk group; S-group). For 30 patients receiving TBI/BU/CY, 13 were transplanted in standard risk and 17 were in advanced stage of hematological malignancies (high risk group; H-group); 7 in S-group and 9 in H-group transplanted from unrelated donor. Severe regimen-related toxicity was found in 10% of patients receiving TBI/BU/CY (one in standard risk group and 2 in high risk group), but not found in patients receiving BU/CY. Probability of disease free survival (DFS) at 5 years was 38% in patients receiving BU/CY, and 43% in patients receiving TBI/BU/CY (52% in S-group and 35% in H-group). For patients transplanted from related donor at standard risk, probability of DFS was higher in patients receiving TBI/BU/CY than in patients receiving BU/CY (83% vs 38%; p<0.05). For patients receiving TBI/BU/CY as preparatory regimen, probability of DFS was higher in patients transplanted from related donors than in patients transplanted from unrelated donors (63% vs 29%; p<0.05), that was due to lower rate of non-relapse mortality (8% vs 61%; p<0.001). Probability or relapse was 33% in patients receiving BU/CY, and 28% in patients receiving TBI/BU/CY (23%, in S-group and 31% even in H-group), and no significant difference was found between the three groups. We conclude that this TBI/BU/CY regimen is well tolerated and is very effective in reducing relapse and improving survival, especially in standard risk

  17. INFLUENCE OF BONE MARROW ALLOGENEIC MULTIPOTENT MESENCHYMAL STROMAL CELLS ON THE FORMATION OF ANTI-ISCHEMIC KIDNEY PROTECTION

    Directory of Open Access Journals (Sweden)

    S. S. Mescherin

    2015-01-01

    Full Text Available Аim of this work was to study the influence of intravenous injection times of bone marrow allogeneic multipotent mesenchymal stromal cells (BM MMSCs on kidney function and morphology in modeled ischemicreperfusion injury of kidney (IRIK. Materials and methods. The study was conducted on 90 male Wistar rats. On the original IRI model of a single kidney (60 min, warm ischemia 4 groups of experiments were performed: in the first group the dose of 5 × 106 of BM MMSCs was administered intravenously 14 days before IRIK modeling; in the second group, the same dose of BM MMSCs was administered 7 days before IRIK; in the third group, the same dose of BM MMSCs was administered during kidney reperfusion after IRIK modeling; the fourth group served as the control group (IRIK without BM МMSCs. The study duration was 21 days since the start of IRIK modeling. In all groups the nitrogen secretory function of kidneys was examined and the histological condition of kidneys during the entire recovery period was evaluated. Besides, blood of rats of the first and the fourth groups was examined for proand anti-inflammatory cytokine levels and phagocytosis indices using the suspension of inactivated St. aureus. The significance of differences in these two groups was evaluated by Student's test at p < 0.05. Results. It has been demonstrated that the pretreatment with BM MMSCs (1 and 2 weeks before IRIK modeling increased the anti-ischemic resistance of kidney while the administration of BM MMSCs on the day of IRIK modeling (during reperfusion enhanced kidney damage, characterized by increased mortality, elevated levels of urea and creatinine in blood and structural injury of renal tissue, as compared to other groups. The comparative analysis of the first and fourth groups shows that BM MMSCs decrease the levels of pro-inflammatory cytokines and increase the levels of anti-inflammatory cytokines, as well as enhance potential of antimicrobial protection. Conclusion

  18. Bone marrow biopsy

    Science.gov (United States)

    Biopsy - bone marrow ... A bone marrow biopsy may be done in the health care provider's office or in a hospital. The sample may be taken from the pelvic or breast bone. Sometimes, other areas are used. Marrow is removed ...

  19. Effects of recombinant human granulocyte colony stimulating factor (rhG-CSF) on hemopoiesis and survival rate following allogeneic bone marrow transplantation in mice

    International Nuclear Information System (INIS)

    The effects of recombinant human granulocyte colony stimulating factor (rhG-CSF) on the survival rate and hemopoiesis after allogeneic bone marrow transplantation (BMT) were examined. Specific pathogen-free (SPF) C3H mice and germ-free C3H mice, kept in an isolator for germ-free animals, received 10 Gy of total body irradiation (TBI) and all the mice died by day 9 after TBI. These survival rates were improved by BMT. In the case of SPF mice, survival rates at 14 and 100 days were 33% (12/36), 17% (6/36) and in the case of germ-free mice they were 79% (15/19), 74% (14/19) respectively. When SPF mice received rhG-CSF (30 μg/kg/day) subcutaneously for 14 consecutive days following BMT, their survival rates were improved to 79% (30/38), 79% (30/38) respectively. The survival rate of rhG-CSF treated SPF mice were equal to that of germ-free mice. When the effect of rhG-CSF treatment on hemopoiesis of SPF mice after allogeneic BMT was examined varous hematopoietic progenitor cells in the bone marrow and spleen increased until day 10 after, BMT, while only neutrophils increased in the peripheral blood during the period. No adverse effects of rhG-CSF after BMT, the neutrophil recovered in counts quickly and increased neutrophil prevented endogenous infections and improved the survival rate without apparent complications. (author)

  20. Cytogenetic evidence for recurrence of acute myelogenous leukemia after allogeneic bone marrow transplantation in donor hematopoietic cells

    Energy Technology Data Exchange (ETDEWEB)

    Elfenbein, G.J.; Brogaonkar, D.S.; Bias, W.B.

    1978-09-01

    A 22-yr-old man with acute myelocytic leukemia received a bone marrow transplant from a genotypically HLA-identical female sibling after cyclophosphamide preparation. He remained in complete remission for 18 mo, when he developed a chloroma in the perineum. The chloroma was treated with local radiotherapy. The chloroma recurred 8 mo later and was treated with radiotherapy followed by combination chemotherapy. At 34 mo after transplant, marrow relapse and chloroma were documented. The first chloroma contained host cells by fluorescent Y-chromatin body analyses of interphase nuclei. All metaphase cells and karyotypes from peripheral blood and marrow samples showed no evidence of host cells from 3 wk after transplant through the time of marrow relapse. Data from autosomal and sex chromosome studies indicate that the marrow relapse occurred in cells of donor origin. A new consistent chromosome abnormality (45, X, -X, t(8;21) (q22; q22)) was observed in a majority of donor cells. The patient received a second bone marrow transplant from the same donor after preparation with busulfan and cyclophosphamide and attained a complete remission with full hematologic engraftment.

  1. Effects of T cell depletion in radiation bone marrow chimeras. I. Evidence for a donor cell population which increases allogeneic chimerism but which lacks the potential to produce GVHD

    International Nuclear Information System (INIS)

    The opposing problems of graft-vs-host disease (GVHD) and failure of alloengraftment present major obstacles to the application of bone marrow transplantation (BMT) across complete MHC barriers. The addition of syngeneic T-cell-depleted (TCD) bone marrow (BM) to untreated fully allogeneic marrow inocula in lethally irradiated mice has been previously shown to provide protection from GVHD. We have used this model to study the effects of allogeneic T cells on levels of chimerism in recipients of mixed marrow inocula. The results indicate that T cells in allogeneic BM inocula eliminate both coadministered recipient-strain and radioresistant host hematopoietic elements to produce complete allogeneic chimerism without clinical GVHD. To determine the role of GVH reactivity in this phenomenon, we performed similar studies in an F1 into parent combination, in which the genetic potential for GVHD is lacking. The presence of T cells in F1 marrow inocula led to predominant repopulation with F1 lymphocytes in such chimeras, even when coadministered with TCD-recipient-strain BM. These results imply that the ability of allogeneic BM cells removed by T cell depletion to increase levels of allochimerism may be mediated by a population which is distinct from that which produces GVHD. These results may have implications for clinical BM transplantation

  2. Treated of type 1 diabetes mellitus in non-obese diabetic mice by transplantation of allogeneic bone marrow and pancreatic tissue

    International Nuclear Information System (INIS)

    Non-obese diabetic (NOD) mice provide a model for type 1 diabetes mellitus. We previously showed that allogeneic bone marrow transplantation (ABMT) can prevent and treat insulitis and overt diabetes in NOD mice. However, ABMT alone could not be used to treat overt diabetes in NOD mice whose islets had been completely destroyed. To provide insulin-producing cells, pancreatic tissue from newborn mice was grafted under the renal capsules in combination with ABMT. The aims of concomitant ABMT are as follows. (i) It induces immunological tolerance to the donor-type major histocompatibility complex determinants and permits the host to accept subsequent pancreatic allografts from the bone marrow donor. (ii) ABMT replaces abnormal stem cells with normal stem cells. After transplantation of bone marrow plus newborn pancreas, NOD mice showed reduction of the glycosuria and a normal response in the glucose-tolerance test. Immunohistological study revealed the presence of clustered insulin-containing beta cells in the grafted pancreatic transplants. ABMT may become a viable treatment of established type 1 diabetes mellitus in humans

  3. Correlation of lung abnormalities on high-resolution CT with clinical graft-versus-host disease after allogeneic versus autologous bone marrow transplantation in children

    Energy Technology Data Exchange (ETDEWEB)

    Merlini, Laura; Borzani, Irene Maria Olivia; Anooshiravani, Mehrak; Hanquinet, Sylviane [University of Geneva Children' s Hospital, Paediatric Radiology Unit, Geneva (Switzerland); Rochat, Isabelle [University of Geneva Children' s Hospital, Paediatric Pneumology Unit, Geneva (Switzerland); Ozsahin, Ayse Hulya [University of Geneva Children' s Hospital, Paediatric Oncology Unit, Geneva (Switzerland)

    2008-11-15

    Late-onset noninfectious pulmonary complications (LONIPCs) are life-threatening complications of bone marrow transplantation (BMT). Several pathological patterns are described in the literature with different prognoses, and with different relationships to graft-versus-host disease (GVHD). The role of high-resolution CT (HRCT) is not yet well established. To illustrate different patterns of LONIPCs on HRCT in allogeneic versus autologous BMT in order to investigate the correlation with chronic GVHD (cGVHD). A total of 67 HRCT scans were performed in 24 patients with noninfectious pulmonary disease at least 3 months after BMT (16 allogeneic, 8 autologous). Abnormality patterns and extension on HRCT images were correlated with the clinical outcome and with the severity of cGVHD. Of 24 patients, 9 showed LONIPCs (1 autologous, 8 allogeneic). There was a significant association between abnormalities on HRCT and severe cGVHD (P = 0.038), with no specific pattern. Prognosis seemed to be related to the severity of cGVHD and not to the extent of abnormalities on HRCT. The significant association between abnormalities on HRCT and severe GVHD suggests that LONIPCs can be a pulmonary manifestation of the disease. HRCT is a useful tool when combined with clinical data. (orig.)

  4. Allogeneic Bone Marrow Transplant from MRL/MpJ Super-Healer Mice Does Not Improve Articular Cartilage Repair in the C57Bl/6 Strain.

    Directory of Open Access Journals (Sweden)

    Catherine A Leonard

    Full Text Available Articular cartilage has been the focus of multiple strategies to improve its regenerative/ repair capacity. The Murphy Roths Large (MRL/MpJ "super-healer" mouse demonstrates an unusual enhanced regenerative capacity in many tissues and provides an opportunity to further study endogenous cartilage repair. The objective of this study was to test whether the super-healer phenotype could be transferred from MRL/MpJ to non-healer C57Bl/6 mice by allogeneic bone marrow transplant.The healing of 2mm ear punches and full thickness cartilage defects was measured 4 and 8 weeks after injury in control C57Bl/6 and MRL/MpJ "super-healer" mice, and in radiation chimeras reconstituted with bone marrow from the other mouse strain. Healing was assessed using ear hole diameter measurement, a 14 point histological scoring scale for the cartilage defect and an adapted version of the Osteoarthritis Research Society International scale for assessment of osteoarthritis in mouse knee joints.Normal and chimeric MRL mice showed significantly better healing of articular cartilage and ear wounds along with less severe signs of osteoarthritis after cartilage injury than the control strain. Contrary to our hypothesis, however, bone marrow transplant from MRL mice did not confer improved healing on the C57Bl/6 chimeras, either in regards to ear wound healing or cartilage repair.The elusive cellular basis for the MRL regenerative phenotype still requires additional study and may possibly be dependent on additional cell types external to the bone marrow.

  5. Pathological changes in the liver after allogeneic bone marrow stromal cells transplantation via percutaneous needle injection in patients with acute liver injury

    International Nuclear Information System (INIS)

    Objective: To observe the histopathological changes in the liver after transplanting allogeneic bone marrow stromal cells (BMSCs) into liver of acute liver injury (ALI) via percutaneous needle injection. Methods: BMSCs were derived from bone marrow obtained from femoral and tibial bones of male albino rabbits BMSCs were separated, grown, and propagated in culture for 3 weeks 58 syngeneic male rabbits were reduced liver injury with D-galactosamine 24 hours later. 5 mL (about 2×107 cell/mL) BMSCs or D-hanks solution were percutaneously injected into livers of BMSCs group (n=24) and control group (D-hanks solution group, n=34) respectively. The rabbits were killed at different time points (1 week, 2 week, 4 week) Histopathological changes and degrees of necrosis in the hepatic tissues were assessed by two histopathologists blinded to treated group and each other's results. Results: The degree of liver necrosis was decreased and the proliferation of hepatocytes was significantly stimulated in the BMSCs group compared to the D-hanks group; the histopathological scores of the 2 groups were statistically significant (P<0.001). Conclusion: The transplantation of BMSCs have a significant anti-injurious ability. (authors)

  6. Bone marrow aspiration

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003658.htm Bone marrow aspiration To use the sharing features on this page, please enable JavaScript. Bone marrow is the soft tissue inside bones that helps ...

  7. Combination of CTLA4-FasL gene transfer and allogeneic bone marrow transplantation led to durable macrochimerism and donor-specific tolerance in mouse model

    Institute of Scientific and Technical Information of China (English)

    FENG Yougang; WANG Guangming; HAO Jie; LI Ailing; YUAN Guohong; LI Chong; ZENG Fuqing; XIE Shusheng

    2005-01-01

    Mixed hemopoietic chimerism is capable of inducing donor specific tolerance, thus eliminating the chronic immunosuppressive therapy following organ transplantation. As yet no safe and effective tolerance protocol is available for clinical implementation. Here we describe an alternative nonmyeloablative based strategy of using a single injection of recombination adenovirus vector encoding CTLA4-FasL fusing gene and donor bone marrow cells to promote durable mixed macrochimerism (>20% on 140 d). Chimeras exhibited robust donor-specific tolerance, as evidenced by acceptance of fully allogeneic skin grafts (the mean survival time (MST)>200 d) and rejection of third- party skin grafts in a normal manner (MST<10 d). In this model, the frequencies of helper T lymphocyte precursor (HTLp) and cytotoxic T lymphocyte precursor (CTLp) were greatly reduced on day 14 after transplantation, suggesting that CTLA4-FasL led to rapid systemic peripheral tolerance to facilitate the bone marrow engraftment, while both HTLp and CTLp remained at low level only in recipient mice with mixed chimerism on day 140 after transplantation, demonstrating that long-term skin grafts tolerance was associated with stable mixed chimerism, and central deletion of donor specific T cell may be the main mechanism for tolerance maintenance.

  8. Successful management of EBV-PTLD in allogeneic bone marrow transplant recipient by virological-immunological monitoring of EBV infection, prompt diagnosis and early treatment.

    Science.gov (United States)

    Chiereghin, Angela; Bertuzzi, Clara; Piccirilli, Giulia; Gabrielli, Liliana; Squarzoni, Diego; Turello, Gabriele; Ferioli, Martina; Sessa, Mariarosaria; Bonifazi, Francesca; Zanoni, Lucia; Sabattini, Elena; Lazzarotto, Tiziana

    2016-02-01

    Epstein-Barr virus-related post-transplant lymphoproliferative disorder (EBV-PTLD) is an uncommon, but frequently fatal, complication after allogeneic hematopoietic stem cell transplant. Prospective post-transplant virological and immunological monitoring allowed to successfully manage a patient who developed both polymorphic and monomorphic, "diffuse large B-cell lymphoma like", as an EBV-PTLD, 65days after allogeneic bone marrow transplant. Early detection of significant increase in EBV DNA level in patient's peripheral blood (peak of viral load equal to 119,039copies/mL whole blood, +56day after transplant) led to administration of pre-emptive anti-CD20 monoclonal antibody (rituximab) and close clinical monitoring. After one week, physical exam revealed laterocervical adenopathy. Histopathologic features, immunohistochemical characterization and in situ hybridization study allowed to establish a diagnosis of EBV-related PTLD. Immunological monitoring showed no EBV-specific T-cell responses during EBV replication, thus potentially explaining the occurrence of high EBV load with subsequent PTLD development. A total of four doses of anti-CD20 monoclonal antibody were administered and at the end of the treatment, EBV infection was cleared and imaging technique showed complete disease remission. In conclusion, the early use of anti-CD20 monoclonal antibody proved to be a safe and effective treatment strategy for EBV-PTLD. Moreover, combined virological-immunological monitoring of EBV infection may more accurately assess patients at higher risk for EBV-PTLD. PMID:26687013

  9. Bone Marrow Diseases

    Science.gov (United States)

    ... that help with blood clotting. With bone marrow disease, there are problems with the stem cells or ... marrow makes too many white blood cells Other diseases, such as lymphoma, can spread into the bone ...

  10. ALLOGENEIC PERIPHERAL BLOOD AND BONE MARROW STEM CELL TRANSPLANTATION FOR CHRONIC MYELOGENOUS LEUKEMIA: A SINGLE CENTER STUDY

    Directory of Open Access Journals (Sweden)

    A. Ghavamzadeh

    2003-08-01

    Full Text Available In this center, from 1991 to 2002, 89 chronic myelogenous leukemic (CML patients, age ranging between 8-48 years with a median age of 29, underwent hematopoietic stem cell transplantation. Eighty-eight patients were in the first chronic phase of disease. Twenty-three patients received bone marrow transplantation (BMT and 66 patients received peripheral blood stem cell transplantations (PBSCT. Transplantation was performed at a median interval of 19 months post-diagnosis. All with five exceptions received busulfan + cyclophosphamide (Bu Cy conditioning regimens. To maintain graft vs. host disease (GVHD prophylaxis, all with three exceptions received cyclosporine + metothrexate. Administration of granulocyte colony stimulating factor (G-CSF, per protocol, was included in post-transplantation regimens from the year 1999 on 48 patients. All patients received marrow transplantations from sibling donors. Fifty seven of transplanted patients are alive. Disease free survivals (DFS from 6.2 to 9.5 and from 2.2 to 6.2 years for BMT group were 38.2% and 47.8%, respectively. DFS for PBSCT group was calculated as 54.3% in a period of 1.9 to 4.6 years.

  11. Imaging of Bone Marrow.

    Science.gov (United States)

    Lin, Sopo; Ouyang, Tao; Kanekar, Sangam

    2016-08-01

    Bone marrow is the essential for function of hematopoiesis, which is vital for the normal functioning of the body. Bone marrow disorders or dysfunctions may be evaluated by blood workup, peripheral smears, marrow biopsy, plain radiographs, computed tomography (CT), MRI and nuclear medicine scan. It is important to distinguish normal spinal marrow from pathology to avoid missing a pathology or misinterpreting normal changes, either of which may result in further testing and increased health care costs. This article focuses on the diffuse bone marrow pathologies, because the majority of the bone marrow pathologies related to hematologic disorders are diffuse. PMID:27444005

  12. Predominant expression of circulating CD3+ lymphocytes bearing gamma T cell receptor in a prolonged immunodeficiency after allogeneic bone marrow transplantation.

    Science.gov (United States)

    Vilmer, E; Guglielmi, P; David, V; Leca, G; Rabian, C; Degos, L; Boiron, M; Bensussan, A

    1988-09-01

    The cell surface expression of alpha:beta heterodimer was studied using WT31 monoclonal antibody, in peripheral blood lymphocytes (PBL) from a patient who developed a prolonged immunodeficiency after allogeneic bone marrow transplantation. This patient, grafted for chronic myelogenous leukemia, received T cell depleted bone marrow from her HLA, A, B, D matched sibling. The late occurrence of opportunistic infection, led us to analyze the phenotype of patient PBL. 70% of PBL were CD3+ and 29% WT31+, indicating that the majority of CD3+ PBL did not express the alpha:beta heterodimer. Transcription of the genes encoding the alpha, beta, and gamma chains was assessed in cell lines derived from PBL, by Northern blot analysis. We showed that the CD3+ WT31- subset expressed a truncated, beta mRNA (1.0 kb) and also truncated alpha transcript (1.4 kb). To determine the CD3-associated structure on CD3+ WT31- cell line, immunoprecipitation assays were performed using monoclonal anti-CD3 and an hetero antiserum against gamma peptides. These CD3+ WT31- cells expressed a disulfide linked dimer, composed of products of gamma gene (37 kD, 40 kD) and of undefined delta chain (45 kD). Functional analyses were performed in PBL before and after sorting with WT31 and anti-CD3 antibody. These circulating CD3+ WT31- cells were unable to proliferate when triggered with anti-T3 beads and they seemed to mediate a suppressor activity on CD3+ WT31+ cells.

  13. Bone Marrow Transplantation

    Science.gov (United States)

    Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains immature cells, called stem cells. The ... platelets, which help the blood to clot. A bone marrow transplant is a procedure that replaces a ...

  14. Experimental bladder regeneration using a poly-l-lactide/silk fibroin scaffold seeded with nanoparticle-labeled allogenic bone marrow stromal cells

    Science.gov (United States)

    Yudintceva, Natalia M; Nashchekina, Yulia A; Blinova, Miralda I; Orlova, Nadezhda V; Muraviov, Alexandr N; Vinogradova, Tatiana I; Sheykhov, Magomed G; Shapkova, Elena Y; Emeljannikov, Dmitriy V; Yablonskii, Petr K; Samusenko, Igor A; Mikhrina, Anastasiya L; Pakhomov, Artem V; Shevtsov, Maxim A

    2016-01-01

    In the present study, a poly-l-lactide/silk fibroin (PL-SF) bilayer scaffold seeded with allogenic bone marrow stromal cells (BMSCs) was investigated as a potential approach for bladder tissue engineering in a model of partial bladder wall cystectomy in rabbits. The inner porous layer of the scaffold produced from silk fibroin was designed to promote cell proliferation and the outer layer produced from poly-l-lactic acid to serve as a waterproof barrier. To compare the feasibility and efficacy of BMSC application in the reconstruction of bladder defects, 12 adult male rabbits were divided into experimental and control groups (six animals each) that received a scaffold seeded with BMSCs or an acellular one, respectively. For BMSC tracking in the graft in in vivo studies using magnetic resonance imaging, cells were labeled with superparamagnetic iron oxide nanoparticles. In vitro studies demonstrated high intracellular incorporation of nanoparticles and the absence of a toxic influence on BMSC viability and proliferation. Following implantation of the graft with BMSCs into the bladder, we observed integration of the scaffold with surrounding bladder tissues (as detected by magnetic resonance imaging). During the follow-up period of 12 weeks, labeled BMSCs resided in the implanted scaffold. The functional activity of the reconstructed bladder was confirmed by electromyography. Subsequent histological assay demonstrated enhanced biointegrative properties of the PL-SF scaffold with cells in comparison to the control graft, as related to complete regeneration of the smooth muscle and urothelium tissues in the implant. Confocal microscopy studies confirmed the presence of the superparamagnetic iron oxide nanoparticle-labeled BMSCs in newly formed bladder layers, thus indicating the role of stem cells in bladder regeneration. The results of this study demonstrate that application of a PL-SF scaffold seeded with allogenic BMSCs can enhance biointegration of the graft in

  15. Busulfan, cyclophosphamide and fractionated total body irradiation as a conditioning regimen for allogeneic bone marrow transplantation in patients with non-lymphocytic hematopoietic malignancies

    Energy Technology Data Exchange (ETDEWEB)

    Watanabe, Hiroshi [Jikei Univ., Tokyo (Japan). School of Medicine

    1996-11-01

    Allogeneic bone marrow transplantation (BMT) with the conditioning regimen of 8 mg/kg of busulfan (BUS), 120 mg/kg of cyclophosphamide (CPM) and 10 Gy of total body irradiation (TBI) was evaluated in the patients with non-lymphocytic hematopoietic malignancies. The disease distribution of the 22 patients was as follows; 14 in the standard risk group (SRG), 8 in the high risk group (HRG). SRG included the patients with acute myeloid leukemia (AML) in the first complete remission, chronic myelogenous leukemia (CML) in chronic phase and myelodysplastic syndrome with refractory anemia, while HRG included the patients with refractory AML and CML in blastic phase. The median age of patients was 33 years old (y.o.), and the median observation period was 34.5 months No relapse occurred, but 8 patients (36%) died of various complications. Ail the patients who died of interstitial pneumonitis (4 cases) were 40 y.o. and more. Acute graft-versus-host disease (GvHD) and chronic GvHD were clinically controllable. The probability of disease-free survival rate at 5 years (5y-DFS) was 50.0% in overall patients. The 5y-DFS was 57.1% in HRG (7 cases), while 54.3% in SRG (13 cases) donated from the HLA identical siblings (20 cases). In these 13 patients in SRG, the 5y-DFS was 100% in patients under 40 y.o. (6 cases), while the probability of disease-free survival rate at 3 years was 68.6% and the 5y-DFS was 0% in patients over 40 y.o. (7 cases). Our data indicate that the conditioning regimen combining BUS, CPM and TBI for allogeneic BMT is promising for the treatment of the patients of HRG and the patients under 40 y.o. in SRG. (author)

  16. Bone Marrow Engraftment Analysis after Granulocyte Transfusion

    OpenAIRE

    Swierczynski, Sharon L.; Hafez, Michael J.; Philips, Juliet; Higman, Meghan A.; Berg, Karin D.; Murphy, Kathleen M.

    2005-01-01

    We present the case of a 6-year-old male who received an allogeneic bone marrow transplant as part of treatment for acute lymphoblastic leukemia. The patient relapsed 5 months after transplantation and received additional chemotherapy. He acquired an angioinvasive fungal infection that required transfusion of granulocytes. Approximately 5 weeks after relapsing (181 days after transplant), a bone marrow specimen was taken for molecular engraftment analysis and flow cytometry to assess graft lo...

  17. Bone marrow processing for transplantation using Cobe Spectra cell separator.

    Science.gov (United States)

    Veljković, Dobrila; Nonković, Olivera Šerbić; Radonjić, Zorica; Kuzmanović, Miloš; Zečević, Zeljko

    2013-06-01

    Concentration of bone marrow aspirates is an important prerequisite prior to infusion of ABO incompatible allogeneic marrow and prior to cryopreservation and storage of autologous marrow. In this paper we present our experience in processing 15 harvested bone marrow for ABO incompatible allogeneic and autologous bone marrow (BM) transplantation using Cobe Spectra® cell separator. BM processing resulted in the median recovery of 91.5% CD34+ cells, erythrocyte depletion of 91% and volume reduction of 81%. BM processing using cell separator is safe and effective technique providing high rate of erythrocyte depletion and volume reduction, and acceptable recovery of the CD34+ cells.

  18. Subclinical pulmonary function defects following autologous and allogeneic bone marrow transplantation: relationship to total body irradiation and graft-versus-host disease

    International Nuclear Information System (INIS)

    Pulmonary function results pre- and post-transplant, to a maximum of 4 years, were analyzed in 98 patients with haematological disorders undergoing allogeneic (N = 53) or autologous bone marrow transplantation (N = 45) between 1982 and 1988. All received similar total body irradiation based regimens ranging from 9.5 Gy as a single fraction to 14.4 Gy fractionated. FEV1/FVC as a measure of airway obstruction showed little deterioration except in patients experiencing graft-versus-host disease in whom statistically significant obstructive ventilatory defects were evident by 6 months post-transplant (p less than 0.01). These defects appeared to be permanent. Restrictive ventilatory defects, as measured by reduction in TLC, and defects in diffusing capacity (DLCO and KCO) were also maximal at 6 months post-transplant (p less than 0.01). Both were related, at least in part, to the presence of GVHD (p less than 0.01) or use of single fraction TBI with absorbed lung dose of 8.0 Gy (p less than 0.05). Fractionated TBI resulted in less marked restricted ventilation and impaired gas exchange, which reverted to normal by 2 years, even when the lung dose was increased from 11.0 Gy to between 12.0 and 13.5 Gy. After exclusion of patients with GVHD (30% allografts) there was no significant difference in pulmonary function abnormalities between autograft and allograft recipients

  19. Increased Type 1 Immune Response in the Bone Marrow Immune Microenvironment of Patients with Poor Graft Function after Allogeneic Hematopoietic Stem Cell Transplantation.

    Science.gov (United States)

    Wang, Yu-Tong; Kong, Yuan; Song, Yang; Han, Wei; Zhang, Yuan-Yuan; Zhang, Xiao-Hui; Chang, Ying-Jun; Jiang, Zheng-Fan; Huang, Xiao-Jun

    2016-08-01

    Poor graft function (PGF) is a severe complication after allogeneic hematopoietic stem cell transplantation (allo-HSCT). The question of whether the bone marrow (BM) immune microenvironment is involved in the pathogenesis of PGF remains unresolved. In total, 10 patients with PGF, 30 matched patients with good graft function after allo-HSCT, and 15 healthy donors were enrolled in this nested case-control study. The Th1, Th2, Tc1, Tc2, and active phenotypes were analyzed by flow cytometry. IFN-γ and IL-4 levels in BM plasma were evaluated using cytometric beads assay. Relative to other subjects, patients with PGF had significantly higher proportions of stimulated CD4(+) and CD8(+) T cells that produced IFN-γ (Th1 and Tc1 cells) but notably decreased proportions of IL-4-producing T cells (Th2 and Tc2 cells), resulting in a shift of the IFN-γ/IL-4 ratio towards a type 1 response and an elevated percentage of activated CD8(+) T cells. Changes in IFN-γ and IL-4 levels in BM plasma were consistent with the cellular results. Our results suggest that dysregulated T cell responses may contribute to the occurrence of PGF after HSCT. PMID:27131864

  20. Allogeneic bone marrow transplantation with conditioning regimen to total body irradiation + thiotepa + melphalan for 35 patients with high-risk leukemia

    International Nuclear Information System (INIS)

    Thirty-five children with high-risk leukemia received an allogeneic bone marrow transplantation (BMT) following a pre-conditioning regimen consisting of total body irradiation, thiotepa and melphalan. Twenty-one patients had acute lymphocytic leukemia, 6 acute nonlymphocytic leukemia, 2 acute undifferentiated leukemia, 2 acute mixed lineage leukemia, 2 myelodysplastic syndrome and 2 juvenile chronic myeloid leukemia. Sixteen patients received BMT while in complete remission (CR), but 19 were not in CR. Eighteen patients received transplants from HLA-matched related donors, 15 from unrelated donors and 2 from HLA-mismatched related donors. Cyclosporin±methotrexate was used for graft-versus-host disease (GVHD) prophylaxis in the BMTs from related donors and tacrolimus±prednisolone in the BMTs from unrelated donors. Transplant-related death occurred in 12 patients; 5 acute GVHD, 4 infections (3 fungal infections, 1 Cytomegalovirus pneumonia), 1 intracranial haemorrhage and 2 chronic GVHD. Relapses were observed in 6 patients (69, 168, 175, 222, 275 and 609 days post BMT). Event-free survival rate at 2 years is 38.1% in CR patients and 36.9% in nonCR patients. (author)

  1. Allogeneic bone marrow transplantation with conditioning regimen to total body irradiation + thiotepa + melphalan for 35 patients with high-risk leukemia

    Energy Technology Data Exchange (ETDEWEB)

    Yumura-Yagi, Keiko; Inoue, Masami; Okamura, Takayuki [Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi (Japan)] [and others

    1997-06-01

    Thirty-five children with high-risk leukemia received an allogeneic bone marrow transplantation (BMT) following a pre-conditioning regimen consisting of total body irradiation, thiotepa and melphalan. Twenty-one patients had acute lymphocytic leukemia, 6 acute nonlymphocytic leukemia, 2 acute undifferentiated leukemia, 2 acute mixed lineage leukemia, 2 myelodysplastic syndrome and 2 juvenile chronic myeloid leukemia. Sixteen patients received BMT while in complete remission (CR), but 19 were not in CR. Eighteen patients received transplants from HLA-matched related donors, 15 from unrelated donors and 2 from HLA-mismatched related donors. Cyclosporin{+-}methotrexate was used for graft-versus-host disease (GVHD) prophylaxis in the BMTs from related donors and tacrolimus{+-}prednisolone in the BMTs from unrelated donors. Transplant-related death occurred in 12 patients; 5 acute GVHD, 4 infections (3 fungal infections, 1 Cytomegalovirus pneumonia), 1 intracranial haemorrhage and 2 chronic GVHD. Relapses were observed in 6 patients (69, 168, 175, 222, 275 and 609 days post BMT). Event-free survival rate at 2 years is 38.1% in CR patients and 36.9% in nonCR patients. (author)

  2. Helical tomotherapy targeting total bone marrow after total body irradiation for patients with relapsed acute leukemia undergoing an allogeneic stem cell transplant

    International Nuclear Information System (INIS)

    Background and purpose: To report our clinical experience in planning and delivering total marrow irradiation (TMI) after total body irradiation (TBI) in patients with relapsed acute leukemia undergoing an allogeneic stem-cell transplant (SCT). Materials and Methods: Patients received conventional TBI as 2 Gy BID/day for 3 days boosted the next day by TMI (2 Gy in a single fraction) and followed by cyclophosphamide (Cy) 60 mg/kg for 2 days. While TBI was delivered with linear accelerator, TMI was performed with helical tomotherapy (HT). Results: Fifteen patients were treated from July 2009 till May 2010, ten with acute myeloid leukemia, and five with acute lymphoid leukemia. At the time of radiotherapy eight patients were in relapse and seven in second or third complete remission (CR) after relapse. The donor was a matched sibling in 7 cases and an unrelated donor in 8 cases. Median organ-at-risk dose reduction with TMI ranged from 30% to 65% with the largest reduction (-50%-65%) achieved for brain, larynx, liver, lungs and kidneys. Target areas (bone marrow sites and spleen in selected cases) were irradiated with an optimal conformity and an excellent homogeneity. Follow-up is short ranging from 180 to 510 days (median 310 days). However, tolerance was not different from a conventional TBI-Cy. All patients treated with TBI/TMI reached CR after SCT. Three patients have died (2 for severe GvHD, 1 for infection) and 2 patients showed relapsed leukemia. Twelve patients are alive with ten survivors in clinical remission of disease. Conclusions: This study confirms the clinical feasibility of using HT to deliver TMI as selective dose boost modality after TBI. For patients with advanced leukemia targeted TMI after TBI may be a novel approach to increase radiation dose with low risk of severe toxicity.

  3. Inhibition of calcineurin abrogates while inhibition of mTOR promotes regulatory T cell expansion and graft-versus-host disease protection by IL-2 in allogeneic bone marrow transplantation.

    Directory of Open Access Journals (Sweden)

    Atsushi Satake

    Full Text Available Regulatory T cells (Tregs attenuate excessive immune responses, making their expansion beneficial in immune-mediated diseases including allogeneic bone marrow transplantation (BMT-associated graft-versus-host disease (GVHD. We have recently reported that Treg expansion does not require phospholipase Cγ activation when IL-2 is provided. As such, the combination of IL-2 and a calcineurin inhibitor (Cyclosporine A; CsA expands Tregs while inhibiting Tconv proliferation and protects against a mouse model of multiple sclerosis. However, CsA inhibits Treg proliferation in the presence of a TCR stimulus, suggesting that CsA may negatively impact Treg proliferation when they receive strong allogeneic MHC-mediated TCR signals. In this study, we show that CsA inhibits Treg proliferation and inducible Treg generation in allogeneic but not in syngeneic BMT when IL-2 is provided. In contrast to CsA, the mTOR inhibitor (Rapamycin almost completely suppressed IL-2-mediated Treg proliferation. However, CsA and Rapamycin inhibited Treg proliferation to a similar extent when TCR stimulation was provided. Furthermore, Rapamycin promoted Treg expansion and inducible Treg generation in allogeneic BMT recipients treated with IL-2. Consistent with these observations, CsA abrogated while Rapamycin promoted the protective effect of IL-2 on allogeneic BMT-induced GVHD. These results suggest that while CsA permits IL-2-induced Treg proliferation in the syngeneic setting (absence of strong TCR signals, CsA in combination with IL-2 may be detrimental for Treg proliferation in an allogeneic setting. Thus, in allogeneic settings, an mTOR inhibitor such as Rapamycin is a better choice for adjunct therapy with IL-2 in expansion of Tregs and protection against allogeneic BMT-induced GVHD.

  4. Bone Marrow Aspiration and Biopsy

    Science.gov (United States)

    ... Global Sites Search Help? Bone Marrow Aspiration and Biopsy Share this page: Was this page helpful? Also ... Examination Formal name: Bone Marrow Aspiration; Bone Marrow Biopsy Related tests: Complete Blood Count ; WBC Differential ; Reticulocyte ...

  5. Mechanism of protection from graft-vs-host disease in murine mixed allogeneic chimeras. I. Development of a null cell population suppressive of cell-mediated lympholysis responses and derived from the syngeneic bone marrow component

    International Nuclear Information System (INIS)

    Splenocyte populations from whole body-irradiated recipients of mixed T cell-depleted (TCD) syngeneic and allogeneic (complete H-2 disparity) bone marrow, or of TCD syngeneic marrow alone, contain cells with the ability to suppress the generation of cell-mediated lympholysis responses in vitro. This activity, which is present by 8 days after bone marrow transplantation and persists for several weeks, has been analyzed for possible veto-like or other specificity. Although reproducible patterns of suppression were observed, depending both on host strain and on the genetic combination of the response examined, the overall suppression in vitro most closely resembles that which has been ascribed to natural suppressor cells in other systems. The suppression appears to be mediated by a non-T cell, non-B cell, nonadherent, asialo GM1-negative population. Cold target inhibition and CTL activity of chimeric cells have been ruled out as factors contributing to the observed suppression. Significantly, in mixed chimeras, suppression was found to be mediated exclusively by cells which were syngeneic to the recipient in both recipient strains tested. The rapid development of this suppressive activity may explain the resistance to graft-vs-host disease conferred on whole body-irradiated mice by the addition of TCD syngeneic marrow to an allogeneic graft-vs-host disease-producing inoculum

  6. Malignant osteopetrosis: hypercalcaemia after bone marrow transplantation.

    OpenAIRE

    Rawlinson, P S; Green, R H; Coggins, A M; Boyle, I T; Gibson, B.E.

    1991-01-01

    A 3 year old girl presented with malignant osteopetrosis, which was treated by allogeneic bone marrow transplantation. Successful engraftment was complicated by prolonged hypercalcaemia, which was controlled by a combination of a bisphosphonate, phosphate infusions, vigorous resalination, and salmon calcitonin. She was alive and well 16 months after the transplant.

  7. [Prolonged acute pancreatitis after bone marrow transplantation].

    Science.gov (United States)

    De Singly, B; Simon, M; Bennani, J; Wittnebel, S; Zagadanski, A-M; Pacault, V; Gornet, J-M; Allez, M; Lémann, M

    2008-04-01

    Acute pancreatitis is not infrequent after allogenic marrow transplantation. Several causes can predispose to pancreatitis, including Graft-Versus-Host Disease (GVHD), a condition which is probably underestimated. In the literature, few description of pancreatic GVHD can be found. Pancreatic GVHD diagnosis can be difficult if pancreatic involvement occurs without other typical manifestations of GVHD. We report the case of a woman, 54 years old, suffering from prolonged, painful pancreatitis two months after allogenic bone marrow transplantation for acute myeloid leucemia. Pancreatic GVHD diagnosis was performed after five weeks on duodenal biopsies despite the absence of diarrheoa. The patient dramatically improved within few days on corticosteroids.

  8. Bone-Marrow Storage and Transplantation

    International Nuclear Information System (INIS)

    The authors present some results from their experiments on bone-marrow storage and transplantation. The main problems with preservation of stored bone marrow are the duration, temperature, adjuvant substances and the significance of viability tests during the conservation processes. The results showed that: • Storage of bone marrow at +4eC produces a progressive decrease in its restoring capacity versus storage time. • While bone marrow stored for 24 h is able to restore 100% of dogs lethally irradiated with 600 rad, after 10 days of storage only 20% of the animals can be restored. • No correlation exists between the actual survival of dogs and that calculated by dye exclusion tests, which indicate a rather high (70%) viability, even after 10 days bone-marrow storage at +4°C. • DNA degradation (depolymerization) measurements of the bone marrow may be used as a supplementary test for checking the viability or restoration potency of bone-marrow cells after storage. • In the freezing process, the optimum contact time between glycerol and the bone-marrow cells is 15 min. Results of experiments regarding certain bone-marrow transplantation problems showed that: • The best time to administer bone marrow is between 24 and 48 h after irradiation. • No survivors were obtained with dogs lethally irradiated with 600 rad by administering autogenic or allogenic DNA extracted from bone marrow, spleen or liver. • Histocompatibility related to sex may play an important role in the bone-marrow graft. The lowest survival of C57BL mice was obtained when the donors were males and the recipients females. • In radioprotection with foetal haemocytopoietic tissues, the donor's age represents one of the main factors. The best results were obtained in experiments on rats, with 19- to 20-day foetal liver (period of complete and maximum haemocytopoietic activity). The tissues mentioned below may be connected with the appearance of certain typical signs of secondary syndrome

  9. T cells from fully H-2 allogeneic (A replaced by B) radiation bone marrow chimeras are functionally competent and host restricted but are alloreactive against hybrid Ia determinants expressed on (A x B)F1 cells

    International Nuclear Information System (INIS)

    In this communication it is demonstrated that T cells from fully allogeneic A replaced by B radiation bone marrow chimeras are alloreactive against the hybrid Ia molecules expressed on the surface of heterozygous A X B cells. These results suggested that previous failures to generate cytotoxic T lymphocyte (CTL) responses from fully allogeneic chimeras by sensitizing the chimeric T cells to antigen in an (A X B)F1-priming environment might have been confounded by an ongoing alloreaction against determinants created by hybrid Ia molecules expressed on F1 cells. Consequently, the ability to generate CTL responses from fully allogeneic chimeras was re-examined by sensitizing the chimeric T cells to antigen presented by homozygous rather that F1 stimulator cells. It was found that T cells of donor bone marrow origin that mediate cytotoxic responses to trinitrophenyl-modified self determinants do differentiate into functional competence in an H-2-incompatible host environment and are restricted to the host H-2 haplotype

  10. Experimental bladder regeneration using a poly-L-lactide/silk fibroin scaffold seeded with nanoparticle-labeled allogenic bone marrow stromal cells

    Directory of Open Access Journals (Sweden)

    Yudintceva NM

    2016-09-01

    Full Text Available Natalia M Yudintceva,1 Yulia A Nashchekina,1,2 Miralda I Blinova,1 Nadezhda V Orlova,3 Alexandr N Muraviov,3 Tatiana I Vinogradova,3 Magomed G Sheykhov,3 Elena Y Shapkova,3 Dmitriy V Emeljannikov,3 Petr K Yablonskii,3,4 Igor A Samusenko,5 Anastasiya L Mikhrina,6 Artem V Pakhomov,7 Maxim A Shevtsov1,7,8 1Department of Cell Culture, Institute of Cytology of the Russian Academy of Sciences (RAS, 2Nanotechnology and Telecommunications, Institute of Physics, Peter the Great St Petersburg Polytechnic University, 3Department of Urology, Federal State Institution Saint Petersburg Research Institute of Phthisiopulmonology, Ministry of Health of Russia, 4Faculty of Medicine, Federal State Budgetary Institute, 5Department of Pathology, Federal State Budgetary Institute “Nikiforov Russian Centre of Emergency and Radiation Medicine” of the Ministry of Health of Russia, 6Department of Pathomorphology, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Science, 7Department of Radiology, Federal Almazov North-West Medical Research Center, 8Department of Experimental Medicine, First I.P. Pavlov State Medical University of St Petersburg, St Petersburg, Russia Abstract: In the present study, a poly-L-lactide/silk fibroin (PL-SF bilayer scaffold seeded with allogenic bone marrow stromal cells (BMSCs was investigated as a potential approach for bladder tissue engineering in a model of partial bladder wall cystectomy in rabbits. The inner porous layer of the scaffold produced from silk fibroin was designed to promote cell proliferation and the outer layer produced from poly-L-lactic acid to serve as a waterproof barrier. To compare the feasibility and efficacy of BMSC application in the reconstruction of bladder defects, 12 adult male rabbits were divided into experimental and control groups (six animals each that received a scaffold seeded with BMSCs or an acellular one, respectively. For BMSC tracking in the graft in

  11. Granulocytic Sarcoma by AML M4eo (inv16 after Allogeneic Stem Cell Transplantation without Bone Marrow Involvement

    Directory of Open Access Journals (Sweden)

    Stephan Zaenker

    2011-01-01

    Full Text Available Granulocytic sarcoma (GS represents a rare type of extramedullar manifestation from the acute myeloid leukaemia (AML. We report the case of a patient with recurrences of AML M4eo leukaemia in the uterus and the small intestine at 3 and 5 years, respectively, after matched related peripheral blood stem cell transplantation (PBSCT. The patient underwent the withdrawal of immunosuppression, hysterectomy, and local irradiation at first relapse, as well as systemic chemotherapy and donor lymphocyte infusions at second recurrence, inducing a second and third complete remission, respectively. At year six after transplantation, the patient experienced disease progression by meningeosis leukaemia to which she succumbed despite intrathecal chemotherapy. Following allogeneic stem cell transplantation, awareness for atypical manifestations of granulocytic sarcoma appears prudent, the cellular immunotherapy should aim at immunological disease control.

  12. Allogeneic bone marrow transplantation with conditioning regimen of total body irradiation/busulfan/melphalan for 16 patients in children with high-risk leukemia and lymphoma

    International Nuclear Information System (INIS)

    We report the therapeutic results of allogeneic bone marrow transplantations (BMT) for 16 children with high-risk leukemia and lymphoma. The conditioning regimen consisted of total body irradiation (TBI) (12 Gy), busulfan (Bu) (4 mg/kg x 2 days), and melphalan (L-PAM) (70 mg/m2 x 2 or 3 days). Graft-versus-host disease (GVHD) prophylaxis was performed with cyclosporin (CsA) + methotrexate (MTX) (4 cases) and CsA + MTX-methyl-prednisolone (11 cases). Seven patients had acute lymphocytic leukemia, 6 acute nonlymphocytic leukemia, 2 B-cell type non-Hodgkin's lymphoma, and 1 peripheral T-cell lymphoma. Nine patients were in complete remission (CR) and 7 in non CR at BMT. Nine patients received transplants from HLA-matched related (MR) donors, 4 from HLA-mismatched related (MisR) donors, and 3 from unrelated (UR) donors. Seven of the cases, all of which were transplanted from MR, have continued complete remission for 15-47 (median 27) months. Nine patients, of which seven were transplanted from MisR/UR, died from complications from fungal pneumonia (3), cytomegalovirus pneumonitis (1), GVHD (1), rhabdomyolysis (1), lymphoproliferative disorder (1), rejection (1), and relapse (1). These results suggest that the combination of TBI, Bu, and L-PAM as a BMT regimen has a significant anti-neoplastic benefit and is considered to be useful; however, considering the high rate of fatal transplant-related complications, more refinement is required, especially for transplants from MisR and UR donors. (author)

  13. Allogeneic bone marrow transplantation with conditioning regimen of total body irradiation/busulfan/melphalan for 16 patients in children with high-risk leukemia and lymphoma

    Energy Technology Data Exchange (ETDEWEB)

    Yoshihara, Takao; Fujii, Noriko [Matsushita Memorial Hospital, Moriguchi, Osaka (Japan); Naya, Mayumi [and others

    1999-02-01

    We report the therapeutic results of allogeneic bone marrow transplantations (BMT) for 16 children with high-risk leukemia and lymphoma. The conditioning regimen consisted of total body irradiation (TBI) (12 Gy), busulfan (Bu) (4 mg/kg x 2 days), and melphalan (L-PAM) (70 mg/m{sup 2} x 2 or 3 days). Graft-versus-host disease (GVHD) prophylaxis was performed with cyclosporin (CsA) + methotrexate (MTX) (4 cases) and CsA + MTX-methyl-prednisolone (11 cases). Seven patients had acute lymphocytic leukemia, 6 acute nonlymphocytic leukemia, 2 B-cell type non-Hodgkin`s lymphoma, and 1 peripheral T-cell lymphoma. Nine patients were in complete remission (CR) and 7 in non CR at BMT. Nine patients received transplants from HLA-matched related (MR) donors, 4 from HLA-mismatched related (MisR) donors, and 3 from unrelated (UR) donors. Seven of the cases, all of which were transplanted from MR, have continued complete remission for 15-47 (median 27) months. Nine patients, of which seven were transplanted from MisR/UR, died from complications from fungal pneumonia (3), cytomegalovirus pneumonitis (1), GVHD (1), rhabdomyolysis (1), lymphoproliferative disorder (1), rejection (1), and relapse (1). These results suggest that the combination of TBI, Bu, and L-PAM as a BMT regimen has a significant anti-neoplastic benefit and is considered to be useful; however, considering the high rate of fatal transplant-related complications, more refinement is required, especially for transplants from MisR and UR donors. (author)

  14. Effects of bone marrow mesenchymal stem cells on hematopoietic recovery and acute graft-versus-host disease in murine allogeneic umbilical cord blood transplantation model.

    Science.gov (United States)

    Li, Zhen Yu; Wang, Chun Qing; Lu, Guang; Pan, Xiu Ying; Xu, Kai Lin

    2014-09-01

    To investigate the effect of bone marrow mesenchymal stem cells (MSC) on hematopoietic recovery and acute graft-versus-host disease (GVHD) in a murine allogeneic umbilical cord blood transplantation (allo-UCBT) model. MSCs were obtained from C57/BL mouse bone marrow. The MSC phenotypes were identified by flow cytometry (FCM), and their ability to differentiate into osteoblasts and adipocytes was tested. Once murine allo-UCBT and aGVHD models were established, mice were divided into five groups: (1) total body irradiation (TBI) group, each mouse receiving 0.3 ml sterile saline infusion after TBI and used as control; (2) UCB group, receiving 2 × 10(6) umbilical cord blood mononuclear cells (UCB-MNC) after TBI; (3) UCB+MSC group, receiving 2 × 10(6) UCB-MNC and 2 × 10(7) MSC after TBI; (4) UCB+SC group, receiving 2 × 10(6) UCB-MNC and 2 × 10(6) spleen cells after TBI; and (5) UCB+SC+MSC group, receiving 2 × 10(6) UCB-MNC, 2 × 10(7) MSC and 2 × 10(6) spleen cells after TBI. To evaluate the engraftment of HSC, the white blood cells, red blood cells, and platelets counts were tested at different time points after transplantation, and the ratio of chimerism was identified by FCM. The acute GVHD clinical scores, recipient mice survival, and the histopathological analyses were used to evaluate the effect of MSC on acute GVHD. MSCs were successfully obtained in vitro and FCM analysis showed that these cells are highly positive for CD90.2, CD44, and negative for CD34, CD45, and they are capable to differentiate into osteoblasts and adipocytes after being induced. Compared to UCB group, the UCB+MSC mice had shorter duration of myelosuppression and higher percentage of donor-derived cells which was up to 22.87 ± 4.3 % and the white blood cell (WBC), red blood cell (RBC), and platelet counts started to increase by day 6 after transplantation. Moreover, the average survival time for UCB+MSC mice was 25.0 ± 10.55 days, while for the UCB group it was 15.5 ± 12.50 days

  15. Bone marrow fat.

    Science.gov (United States)

    Hardouin, Pierre; Pansini, Vittorio; Cortet, Bernard

    2014-07-01

    Bone marrow fat (BMF) results from an accumulation of fat cells within the bone marrow. Fat is not a simple filling tissue but is now considered as an actor within bone microenvironment. BMF is not comparable to other fat depots, as in subcutaneous or visceral tissues. Recent studies on bone marrow adipocytes have shown that they do not appear only as storage cells, but also as cells secreting adipokines, like leptin and adiponectin. Moreover bone marrow adipocytes share the same precursor with osteoblasts, the mesenchymal stem cell. It is now well established that high BMF is associated with weak bone mass in osteoporosis, especially during aging and anorexia nervosa. But numerous questions remain discussed: what is the precise phenotype of bone marrow adipocytes? What is the real function of BMF, and how does bone marrow adipocyte act on its environment? Is the increase of BMF during osteoporosis responsible for bone loss? Is BMF involved in other diseases? How to measure BMF in humans? A better understanding of BMF could allow to obtain new diagnostic tools for osteoporosis management, and could open major therapeutic perspectives. PMID:24703396

  16. The bone marrow microenvironment is similarly impaired in allogeneic hematopoietic stem cell transplantation patients with early and late poor graft function.

    Science.gov (United States)

    Kong, Y; Wang, Y-T; Hu, Y; Han, W; Chang, Y-J; Zhang, X-H; Jiang, Z-F; Huang, X-J

    2016-02-01

    Poor graft function (PGF), including early and late PGF, is a serious complication following allotransplant. We recently reported that bone marrow microenvironment abnormalities may occur in cases of late PGF. Whether these abnormalities occur in early PGF remains unknown. To answer this question, we performed a nested case-control study comparing cellular elements of the bone marrow microenvironment in 10 subjects with early PGF, 30 subjects with late PGF and 40 subjects without PGF. Bone marrow endosteal cells, perivascular cells and endothelial cells were analyzed by flow cytometry and by hematoxylin-eosin and immunohistochemical staining in situ. Subjects with early and late PGF had similar abnormalities in these cell types compared with transplant recipients without PGF. However, none of the aforementioned elements of the bone marrow microenvironment were significantly different between early and late PGF patients. Our data suggest that similar abnormalities in the bone marrow microenvironment may occur in early and late PGF post allotransplant. Cellular approaches, such as the administration of mesenchymal stem cells, promise to be beneficial therapeutic strategies in patients with early or late PGF.

  17. Recipient micro-environment does not dictate the Igh-V restriction specificity of T cell suppressor inducer factor (TsiF) from allogeneic bone marrow chimera in mice

    International Nuclear Information System (INIS)

    The authors have ascertained previously from a study of fully allogeneic irradiation chimeras in mice that the H-2 restriction of the suppressor factor (Ly-2 T suppressor factor) is determined by the post-thymic environment protected by the donor cells, rather than by the thymic environment of the recipient. In the present study, the author analyzed differentiation influences that determine the Igh restriction specificities of the suppressor inducer T cell factor(s) (TsiF) that are produced by Ly-1+ splenic T cells in fully allogeneic bone marrow chimeras in mice. AKR mice that had been lethally irradiated and reconstituted with B10 marrow cells, [B10----AKR] chimeras, produced Ly-1 TsiF after hyper-immunization with sheep erythrocytes (SRBC) which suppressed antigen--specifically the primary antibody responses to SRBC that were generated in cells of the same Igh-Vb haplotype of donor strain and not those generated in cells of the recipient Igh-Va type. Similar results were obtained when Ly-1 TsiF from [B6----BALB/c] and [BALB/c----B6] chimeras were analyzed. Furthermore, the Ly-1 TsiF from [BALB/c----B6] chimeras suppressed the primary antibody responses of both BALB/c [H-2d, Igh-Va, Igh-Ca] and BAB-14 (H-2d, Igh-Va, Igh-Cb), but not those of CAL-20 (H-2d, Igh-Vd, Igh-Cd). These results demonstrate clearly that the Ly-1 TsiF from allogeneic bone marrow chimeras are donor Igh-V-restricted and are not influenced by the recipient micro-environment, presumably that were provided by the thymuses of the recipient mice

  18. Bone marrow (stem cell) donation

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000839.htm Bone marrow (stem cell) donation To use the sharing ... stem cells from a donor's blood. Types of Bone Marrow Donation There are two types of bone ...

  19. The Application of Bone Marrow Transplantation to the Treatment of Genetic Diseases

    Science.gov (United States)

    Parkman, Robertson

    1986-06-01

    Genetic diseases can be treated by transplantation of either normal allogeneic bone marrow or, potentially, autologous bone marrow into which the normal gene has been inserted in vitro (gene therapy). Histocompatible allogeneic bone marrow transplantation is used for the treatment of genetic diseases whose clinical expression is restricted to lymphoid or hematopoietic cells. The therapeutic role of bone marrow transplantation in the treatment of generalized genetic diseases, especially those affecting the central nervous system, is under investigation. The response of a generalized genetic disease to allogeneic bone marrow transplantation may be predicted by experiments in vitro. Gene therapy can be used only when the gene responsible for the disease has been characterized. Success of gene therapy for a specific genetic disease may be predicted by its clinical response to allogeneic bone marrow transplantation.

  20. THE EFFECT OF DONOR LYMPHOCYTES-T AND TOTAL-BODY IRRADIATION ON HEMATOPOIETIC ENGRAFTMENT AND PULMONARY TOXICITY FOLLOWING EXPERIMENTAL ALLOGENEIC BONE-MARROW TRANSPLANTATION

    NARCIS (Netherlands)

    DOWN, JD; MAUCH, P; WARHOL, M; NEBEN, S; FERRARA, JLM

    1992-01-01

    To study the effects of donor T lymphocytes on engraftment and graft-versus-host disease in relation to recipient total-body irradiation, we have returned small numbers of T cells to T-cell-depleted bone marrow transplanted across a minor histocompatibility barrier in mice (B10.BR --> CBA). T-cell-d

  1. The immunodeficiency of bone marrow-transplanted patients. The effect of patient lymphocytes on the response of donor lymphocytes to mitogens and allogeneic cells

    DEFF Research Database (Denmark)

    Ødum, Niels; Hofmann, B; Platz, P;

    1985-01-01

    Lymphocytes from patients after bone marrow transplantation (BMT) are in most cases predominantly of the Leu-2+ (cytotoxic/suppressor) phenotypes and are almost unresponsive to mitogens. In contrast, normal Leu-3+-depleted, Leu-2+-enriched lymphocyte suspensions retain approximately 50...

  2. The Bone Marrow Transplantation Center of the National Cancer Institute - its resources to assist patients with bone marrow failure

    International Nuclear Information System (INIS)

    This paper describes the bone marrow transplantation center of the brazilian National Cancer Institute, which is responsible for the cancer control in Brazil. The document also describes the resources available in the Institute for assisting patients presenting bone marrow failures. The Center provides for allogeneic and autologous bone marrow transplants, peripheral stem cell transplants, umbilical cord collections and transplants, and a small experience with unrelated bone marrow transplants. The Center receives patient from all over the country and provides very sophisticated medical care at no direct cost to the patients

  3. Archival bone marrow samples

    DEFF Research Database (Denmark)

    Lund, Bendik; Najmi, Laeya A; Wesolowska-Andersen, Agata;

    2015-01-01

    AB Archival samples represent a significant potential for genetic studies, particularly in severe diseases with risk of lethal outcome, such as in cancer. In this pilot study, we aimed to evaluate the usability of archival bone marrow smears and biopsies for DNA extraction and purification, whole...... with samples stored for 4 to 10 years. Acceptable call rates for SNPs were detected for 7 of 42 archival samples. In conclusion, archival bone marrow samples are suitable for DNA extraction and multiple marker analysis, but WGA was less successful, especially when longer fragments were analyzed. Multiple SNP...

  4. Intractable Diseases Treated with Intra-Bone Marrow-Bone Marrow Transplantation

    Directory of Open Access Journals (Sweden)

    Ming eLi

    2014-09-01

    Full Text Available Bone marrow transplantation (BMT is used to treat hematological disorders, autoimmune diseases and lymphoid cancers. Intra bone marrow-BMT (IBM-BMT has been proven to be a powerful strategy for allogeneic BMT due to the rapid hematopoietic recovery and the complete restoration of T cell functions. IBM-BMT not only replaces hematopoietic stem cells but also mesenchymal stem cells (MSMCs. MSMCs are multi-potent stem cells that can be isolated from bone marrow, umbilical cord blood, and adipose tissue. MSMCs play an important role in the support of hematopoiesis, and modify and influence the innate and adaptive immune systems. MSMCs also differentiate into mesodermal, endodermal and ectodermal lineage cells to repair tissues. This review aims to summarize the functions of bone marrow-derived- MSMCs, and the treatment of intractable diseases such as rheumatoid arthritis and malignant tumors with IBM-BMT.

  5. Bone-marrow transplant - slideshow

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/presentations/100112.htm Bone-marrow transplant - series To use the sharing features on ... slide 4 out of 4 Normal anatomy Overview Bone-marrow is a soft, fatty tissue found inside of ...

  6. Immune transfer studies in canine allogeneic marrow graft donor-recipient pairs

    Energy Technology Data Exchange (ETDEWEB)

    Grosse-Wilde, H.; Krumbacher, K.; Schuening, F.D.; Doxiadis, I.; Mahmoud, H.K.; Emde, C.; Schmidt-Weinmar, A.; Schaefer, U.W.

    1986-07-01

    Transfer of immunity occurring with bone marrow grafting was studied using the dog as a preclinical model. Allogeneic bone marrow transplantation (BMT) was performed between DLA-identical beagle litter-mates. The donors were immunized with tetanus toxoid (TT) or sheep red blood cells (SRBC), and their humoral response was monitored by hemagglutination. The recipients of bone marrow from TT-immunized donors showed a marked increase of antibody titer one week posttransplantation, while in the recipients of marrow from SRBC immunized donors the antibody titers were considerably lower. Within the following 60 days the antibody titers in both groups diminished gradually to pregrafting levels. Control experiments in which cell-free plasma from donors immunized with TT and SRBC respectively was transfused indicated that the initial rise of specific antibody titers after marrow grafting is likely to be due to a passive transfer of humoral immunity. A single challenge of these marrow graft recipients with the respective antigen 15-18 weeks posttransplantation led to a secondary type of humoral immune response. It could be demonstrated that transfer of memory against TT or SRBC was independent from the actual antibody titer and the time of vaccination of the donor. One dog was immunized with TT after serving as marrow donor. When the donor had shown an antibody response, a peripheral blood leukocytes (PBL) transfusion was given to his chimera. Subsequent challenge of the latter resulted in a secondary type of specific antibody response. This indicates that specific cellular-bound immunological memory can be transferred after BMT from the donor to his allogeneic bone marrow chimera by transfusion of peripheral blood leukocytes. The data may be of importance in clinical BMT to protect patients during the phase of reduced immune reactivity by transfer of memory cells.

  7. Reducing macrophages to improve bone marrow stromal cell survival in the contused spinal cord.

    NARCIS (Netherlands)

    Ritfeld, G.J.; Nandoe Tewarie, R.D.S.; Rahiem, S.T.; Hurtado, A.; Roos, R.A.; Grotenhuis, A.; Oudega, M.

    2010-01-01

    We tested whether reducing macrophage infiltration would improve the survival of allogeneic bone marrow stromal cells (BMSC) transplanted in the contused adult rat thoracic spinal cord. Treatment with cyclosporine, minocycline, or methylprednisolone all resulted in a significant decrease in macropha

  8. Bone marrow mesenchymal stem cells combined with allogeneic bone for cancellous bone defects%骨髓间充质干细胞复合异体骨修复松质骨缺损*★

    Institute of Scientific and Technical Information of China (English)

    王峰; 付志厚

    2013-01-01

      背景:有研究表明骨髓间充质干细胞及异体骨可促进骨缺损的修复,但骨髓间充质干细胞复合异体骨对于松质骨缺损的修复效果至今少有报道。目的:观察骨髓间充质干细胞复合异体骨修复兔松质骨缺损效果。方法:在新西兰大白兔双侧股骨外侧髁造成0.6 cm×1.2 cm 的松质骨缺损,一侧设为模型组,骨缺损处植入复合骨髓间充质干细胞的异体骨,另一侧设为对照组,单纯植入异体骨。结果与结论:植入后4,8,12周,大体观察、X 射线检查和苏木精-伊红染色观察结果显示,模型组在新骨成长方面,缺损区修复方面均优于对照组。植入后12周,模型组骨缺损区可见大量骨小梁形成及成熟的板层骨组织,骨缺损基本修复。对照组骨缺损区仅可见大量编织骨形成,骨缺损尚未得到有效修复。模型组Lane-Sandhu 法 X 射线结合组织学观察评分高于对照组(P <0.05)。生物力学检测结果显示,植入后12周,模型组股骨髁最大压力载荷、载荷/应变比值均高于对照组(P <0.05),最大应变位移较对照组低(P <0.05)。结果证实,骨髓间充质干细胞复合异体骨可有效修复兔股骨髁松质骨缺损,且修复效果明显优于单纯异体骨移植。%BACKGROUND: Some studies have shown that bone marrow mesenchymal stem cells and al ograft bone have a certain role for repairing bone defects, but the effectiveness on cancel ous bone defects is seldom reported so far. OBJECTIVE: To observe the effectiveness of bone marrow mesenchymal stem cells combined with al ogeneic bone on cancel ous bone defects. METHODS: The models of cancel ous bone defects (0.6 cm×1.2 cm) were made artificial y in both condylus lateralis femoris of New Zealand white rabbits: one side served as model group implanted with combination of bone marrow mesenchymal stem cells and al ogeneic bone, and the other side was considered as

  9. Visceral Leishmaniasis: A Differential Diagnosis to Remember after Bone Marrow Transplantation

    OpenAIRE

    2014-01-01

    Leishmania infection in immunocompromised hosts is reported in the literature, mostly concerning human immunodeficiency virus infected patients. It is not well characterized in the context of stem cell transplantation. We report a rare case clinical case of visceral leishmaniasis after allogeneic bone marrow transplantation. A 50-year-old Caucasian male was referred to allogeneic bone marrow transplantation with a high-risk acute lymphoblastic B leukemia in first complete remission. Allogenei...

  10. Evaluation of four methods for cytomegalovirus antibody detection for use by a bone marrow transplantation service.

    OpenAIRE

    Leland, D S; Barth, K A; Cunningham, E B; Jansen, J; Tricot, G J; French, M L

    1989-01-01

    Four methods, latex agglutination, indirect fluorescent antibody, enzyme immunoassay, and complement fixation, were compared for cytomegalovirus antibody screening and for pre- and posttransplant determinations on bone marrow transplant recipients. Latex agglutination was most sensitive (98%) and specific (97%) for screening and pretransplant determinations and was quickest and easiest to perform. In posttransplant sera from allogeneic bone marrow transplant recipients, all methods except com...

  11. Tolerance to MHC class II disparate allografts through genetic modification of bone marrow

    OpenAIRE

    Jindra, Peter T.; TRIPATHI, SUDIPTA; Tian, Chaorui; Iacomini, John; Bagley, Jessamyn

    2012-01-01

    Induction of molecular chimerism through genetic modification of bone marrow is a powerful tool for the induction of tolerance. Here we demonstrate for the first time that expression of an allogeneic MHC class II gene in autologous bone marrow cells, resulting in a state of molecular chimerism, induces tolerance to MHC class II mismatched skin grafts, a stringent test of transplant tolerance. Reconstitution of recipients with syngeneic bone marrow transduced with retrovirus encoding H-2I-Ab (...

  12. Intravenous transplantation of bone marrow mesenchymal stem cells promotes neural regeneration after traumatic brain injury

    OpenAIRE

    Anbari, Fatemeh; Khalili, Mohammad Ali; Bahrami, Ahmad Reza; Khoradmehr, Arezoo; Sadeghian, Fatemeh; Fesahat, Farzaneh; Nabi, Ali

    2014-01-01

    To investigate the supplement of lost nerve cells in rats with traumatic brain injury by intravenous administration of allogenic bone marrow mesenchymal stem cells, this study established a Wistar rat model of traumatic brain injury by weight drop impact acceleration method and administered 3 × 106 rat bone marrow mesenchymal stem cells via the lateral tail vein. At 14 days after cell transplantation, bone marrow mesenchymal stem cells differentiated into neurons and astrocytes in injured rat...

  13. Therapeutic trial of intensified conditioning regimen with high-dose cytosine arabinoside, cyclophosphamide and either total body irradiation or busulfan followed by allogeneic bone marrow transplantation for myelodysplastic syndrome in children

    Energy Technology Data Exchange (ETDEWEB)

    Nagatoshi, Yoshihisa; Okamura, Jun; Ikuno, Yoshiko; Akamatsu, Minoru; Tasaka, Hideko [National Kyushu Cancer Center, Fukuoka (Japan)

    1997-04-01

    Ten children with myelodysplastic syndrome underwent an allogeneic bone marrow transplantation (BMT) with an intensified conditioning regimen. The median age of the patients was 8 years (range 2-10), and included 6 males and 4 females. The subtype of the disease was refractory anemia (RA) in 4, RA with excess blasts (RAEB) in 4, RAEB in transformation (RAEB-T) in 1, and juvenile chronic myelogenous leukemia (JCML) in 1. All patients were conditioned with high-dose cytosine arabinoside (12000 mg/m{sup 2}), cyclophosphamide (120 mg/kg) and either total body irradiation (10-13.2 Gy) or busulfan (16 mg/kg or 560 mg/m{sup 2}). Cyclosporine A and/or methotrexate were used for the prophylaxis of graft-versus-host disease (GVHD). Engraftment was prompt in all but one patient. Severe acute GVHD (grade 3) (n=1), interstitial pneumonitis (n=1) and veno-occlusive disease of the liver (n=1) occurred. The disease relapsed in one patient with RAEB-T. Seven of the 10 patients were alive and disease free 2-74 months after BMT. The disease-free survival rate at 4 years was 69{+-}15%. All surviving patients were in the full performance status. The examined children with MDS tolerated this intensified conditioning regimen well. (author)

  14. Immunologic studies of canine bone marrow chimeras

    International Nuclear Information System (INIS)

    When prospective male or female recipients from the Cooperstown colony were exposed to supralethal total body irradiation and were reconstituted with bone marrow obtained from genotypically DL-A-identical littermate or nonlittermate donors such treatment resulted, in regularly reproducible fashion, in the establishment of a long-term state of chimerism with no evidence of graft-versus-host disease in any of the recipients. The resulting chimeras have survived thus far for 882-1466 days, with donor red cell antigen and leukocyte sex marker evidence of the persistence of chimerism. Subsequent challenge of the chimeras with renal and skin allografts obtained from the specific donor of marrow resulted in the long-term survival of such transplants without any evidence of rejection for 833--1402 days. Skin allografts obtained from other dogs were, however, accorded first-set rejection times. Recent studies indicate that the state of allogeneic unresponsiveness produced by supralethal total body irradiation and bone marrow transplantation also extends to other organs from the donor of marrow, including heart, liver, pancreas and duodenum, and lung

  15. Allogeneic bone marrow transplantation in children with acute myelogenous leukemia in first remission. Associazione Italiana di Ematologia e Oncologia Pediatrica (AIEOP) and the Gruppo Italiano per il Trapianto di Midollo Osseo (GITMO).

    Science.gov (United States)

    Dini, G; Boni, L; Abla, O; Uderzo, C; Polchi, P; Locatelli, F; Di Bartolomeo, P; Arcese, W; Iori, A P; Rossetti, F

    1994-06-01

    Fifty-nine children, aged 1-15 years, with acute myelogenous leukemia (AML) received a bone marrow transplant (BMT) from an HLA-identical sibling (n = 57) or from an identical twin (n = 2), while in first remission (CR). These children represent, to the best of our knowledge, all children grafted in first CR in 11 Italian centers between 1980 and 1990. Patients were prepared with total body irradiation (TBI) plus cyclophosphamide (CY) (n = 50) or melphalan (n = 2) or with busulfan plus CY (n = 7). GVHD prophylaxis consisted of cyclosporin A (n = 48), methotrexate (n = 7) or cyclosporin and methotrexate (n = 2). Survivors have been followed for 21-137 months (median 59 months). Actuarial relapse-free survival was 58% at 66-137 months (95% confidence interval (CI) 44-72). Actuarial risk of relapse was 23% at 48 months (95% CI 10.9-34.8). Risk of non-relapse deaths was 33% in the period 1980-87 and 4% in the period 1988-90 (p = 0.02). In multivariate analysis patients with a blood cell count > 14 x 10(9)/l at diagnosis showed a lower relapse-free survival compared with patients with counts < 14 x 10(9)/l (p = 0.006). We could not detect an effect of FAB subtype, patient age, time to achieve remission or transplant-related variables, including year of BMT, on relapse-free survival. In conclusion, allogeneic marrow transplantation can achieve long-term relapse-free survival in over 50% of children with AML and should be considered as consolidation therapy if a matched sibling is available.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. Cross-dressing by donor dendritic cells after allogeneic bone marrow transplantation contributes to formation of the immunological synapse and maximizes responses to indirectly presented antigen.

    Science.gov (United States)

    Markey, Kate A; Koyama, Motoko; Gartlan, Kate H; Leveque, Lucie; Kuns, Rachel D; Lineburg, Katie E; Teal, Bianca E; MacDonald, Kelli P A; Hill, Geoffrey R

    2014-06-01

    The stimulation of naive donor T cells by recipient alloantigen is central to the pathogenesis of graft-versus-host disease after bone marrow transplantation (BMT). Using mouse models of transplantation, we have observed that donor cells become "cross-dressed" in very high levels of recipient hematopoietic cell-derived MHC class I and II molecules following BMT. Recipient-type MHC is transiently present on donor dendritic cells (DCs) after BMT in the setting of myeloablative conditioning but is persistent after nonmyeloablative conditioning, in which recipient hematopoietic cells remain in high numbers. Despite the high level of recipient-derived alloantigen present on the surface of donor DCs, donor T cell proliferative responses are generated only in response to processed recipient alloantigen presented via the indirect pathway and not in response to cross-dressed MHC. Assays in which exogenous peptide is added to cross-dressed MHC in the presence of naive TCR transgenic T cells specific to the MHC class II-peptide combination confirm that cross-dressed APC cannot induce T cell proliferation in isolation. Despite failure to induce T cell proliferation, cross-dressing by donor DCs contributes to generation of the immunological synapse between DCs and CD4 T cells, and this is required for maximal responses induced by classical indirectly presented alloantigen. We conclude that the process of cross-dressing by donor DCs serves as an efficient alternative pathway for the acquisition of recipient alloantigen and that once acquired, this cross-dressed MHC can assist in immune synapse formation prior to the induction of full T cell proliferative responses by concurrent indirect Ag presentation.

  17. Treatment of intraosseous cystic lesions of the mandible by conservative enucleation and cavity filling with allogenic freeze-dried bone mixed with autologous bone marrow%脱钙冻干骨混合自体骨髓治疗下颌骨囊肿摘除术后骨缺损

    Institute of Scientific and Technical Information of China (English)

    廖隽琨; 叶剑涛; 陈伟良

    2014-01-01

    Objective To evaluate the outcome of defect filling with allogenic freeze-dried bone mixed with bone marrow following conservative enucleation of large intraosseous cystic lesions of the mandible.Methods Forty-two patients with large intraosseous cystic lesions of the mandible were treated by defect filling with allogenic freeze-dried bone combined with bone marrow following conservative cyst enucleation.All patients were evaluated postoperatively by repeated clinical examination done by the operating surgeon.Radiograph-ic examination was performed using panoramic radiographs taken before operation,immediately after operation,6 months and 1 2 months after operation.Results Postoperative hemorrhage occurred in one patient.Wound dehiscence occurred in two patients,and the wound-healing was delayed.All patients showed satisfactory healing.The patients were followed-up for 1 3-48 months using panoramic radio-graphic examination.Recurrence was seen in 2 patients with KCOTs.Clinical and panoramic radiographic examination showed no resid-ual or recurrent cyst in the remaining patients.Conclusions We demonstrate successful clinical application of allogenic freeze-dried bone mixed with autologous bone marrow as an alternative filling material for intraosseous cystic lesions of the mandible after conserva-tive enucleation.%目的:探讨脱钙冻干骨混合自体骨髓治疗下颌骨囊肿摘除术后骨缺损的疗效。方法42例下颌骨囊肿摘除术后采取脱钙冻干骨混合自体骨髓填充缺损,观察手术临床效果,并行术前术后放射线检查。结果1例术后出血,2例创口延期愈合,随访13~48个月2例牙源性角化囊性瘤复发,其余术后愈合良好。结论脱钙冻干骨混合自体骨髓可用来治疗下颌骨囊肿摘除术后骨缺损。

  18. Perfusion Method for Intra-bone Marrow Collection and Stem Cell Transplantation: A Critical Review.

    Science.gov (United States)

    Korrapati, Narasimhulu; Nanganuru, Harikrishna Yadav

    2014-03-19

    A bone marrow transplant is a procedure to replace damaged or destroyed bone marrow with healthy bone marrow stem cells. Bone marrow is the soft, fatty tissue inside our bones. Bone marrow transplantation (BMT) is a powerful strategy for the treatment of leukemia, aplastic anemia, congenital immunodeficiency and autoimmune diseases. In humans, bone marrow cells (BMCs) have usually been collected by multiple bone marrow aspirations from the iliac crest. We have established a new "perfusion" method for collecting BMCs with minimal contamination with the peripheral blood using the long bones of cynomolgus monkeys. This method has proven to be a simple and safe method for harvesting BMCs and reduces the risk of acute graft versus host disease in allogeneic BMT. Intra-bone marrow-BMT (IBM-BMT) provides distinct advantages because it recruits donor-derived hematopoietic stem cells and mesenchymal stem cells. IBM-BMT has been shown to currently be the best strategy for allogeneic BMT. Here we review the perfusion method (for harvesting BMCs) and IBM-BMT (for their transplantation) and show that this combination will become a powerful new clinical strategy for allogeneic BMT.

  19. Cytotoxic T lymphocyte responses in allogeneic radiation bone marrow chimeras. The chimeric host strictly dictates the self-repertoire of Ia-restricted T cells but not H-2K/D-restricted T cells

    International Nuclear Information System (INIS)

    The present report has used fully H-2 allogeneic radiation bone marrow chimeras to assess the role of host restriction elements in determining the self-specificity of Ia- and H-2K/D-restricted T cells that participate in the generation of trinitrophenyl (TNP)-specific cytotoxic T lymphocytes (CTL). It was demonstrated that there exists a stringent requirement for the recognition of host thymic-type Ia determinants, but there exists only a preference for host thymic-type H-2K/D determinants. Indeed, once the stringent requirement for recognition of host Ia determinants was fulfilled, anti-TNP CTL were generated in response to TNP-modified stimulators that expressed either donor-type or host-type H-2K/D determinants. The CTL that were generated in response to TNP-modified donor-type stimulators were shown to be specific for TNP and restricted to the non-thymic H-2K/D determinants of the chimeric donor. Thus, these results demonstrate in a single immune response that the thymic hypothesis accurately predicts the self-specificity expressed by Ia-restricted T cells, but does not fully account for the self-specificity expressed by H-2K/D-restricted T cells. These results are consistent with the concept that H-2K/D-restricted T cells, but not Ia-restricted T cells, can differentiate into functional competence either intrathymically or extra-thymically. The results demonstrate that the generation of anti-TNP CTL responses involve two parallel sets of major histocompatibility complex-restricted cell interactions, an Ia-restricted TH-accessory cell interaction required for TH cell activation, and an H-2K/D-restricted pCTL-stimulator cell interaction required for pCTL stimulation. The interaction between activated TH cells and stimulated pCTL is mediated, at least in part, by nonspecific soluble helper factors

  20. Bilateral Transplantation of Allogenic Adult Human Bone Marrow-Derived Mesenchymal Stem Cells into the Subventricular Zone of Parkinson’s Disease: A Pilot Clinical Study

    Directory of Open Access Journals (Sweden)

    N. K. Venkataramana

    2012-01-01

    Full Text Available The progress of PD and its related disorders cannot be prevented with the medications available. In this study, we recruited 8 PD and 4 PD plus patients between 5 to 15 years after diagnosis. All patients received BM-MSCs bilaterally into the SVZ and were followed up for 12 months. PD patients after therapy reported a mean improvement of 17.92% during “on” and 31.21% during “off” period on the UPDRS scoring system. None of the patients increased their medication during the follow-up period. Subjectively, the patients reported clarity in speech, reduction in tremors, rigidity, and freezing attacks. The results correlated with the duration of the disease. Those patients transplanted in the early stages of the disease (less than 5 years showed more improvement and no further disease progression than the later stages (11–15 years. However, the PD plus patients did not show any change in their clinical status after stem cell transplantation. This study demonstrates the safety of adult allogenic human BM-MSCs transplanted into the SVZ of the brain and its efficacy in early-stage PD patients.

  1. Bone Marrow Transplants: "Another Possibility at Life"

    Science.gov (United States)

    ... of this page please turn Javascript on. Feature: Bone Marrow Transplants “Another Possibility at Life” Past Issues / Summer ... year, and, for 16,000 of them, a bone marrow transplant is the best treatment option, notes Susan ...

  2. Transplant Outcomes (Bone Marrow and Cord Blood)

    Science.gov (United States)

    ... reports show patient survival and transplant data of bone marrow and umbilical cord blood transplants in the transplant ... Data by Center Report —View the number of bone marrow and cord blood transplants performed at a specific ...

  3. Bone marrow transplantation in the rat

    International Nuclear Information System (INIS)

    We have isolated inflammatory leukocytes from various lymphoid and parenchymal organs after total body irradiation and bone marrow transplantation from either an allogeneic or syngeneic strain and tested their ability to perform lytic functions in vitro. No direct lytic activity (i.e. cytotoxic T lymphocytes, CTL) to relevant strain-derived target cells in the lymphoid or parenchymal target organs was seen preceding or during acute graft-versus-host disease (aGVHD). Instead, the leukocytes of the spleen and blood and the inflammatory cells of liver and lungs were efficient effector cells against recipient-derived target cells in the presence of relevant antibody (antibody dependent cellular cytotoxicity, ADCC). The NK activity against YAC-1 (natural killer, NK) target cells was first high in the spleen, but when the aGHVD appeared in the allograft marrow recipients the NK activity decreased in the spleen with a concomitant increase in the liver, but not in the other parenchymal target organs. At the same time no NK acitivity was seen in the syngeneic marrow graft recipients' parenchymal organs. These observations suggest functional differences in the structure of inflammation in the different target organs of aGVHD. (author)

  4. Aspiration and Biopsy: Bone Marrow

    Science.gov (United States)

    ... The person performing the bone marrow aspiration and biopsy will know your medical history, but might ask additional questions, such as what medicines you're taking or whether you have any allergies. Be sure to ... on the aspiration and biopsy site about 30 minutes before the procedure. You ...

  5. Bone Marrow Transplantation in Hindlimb Muscles of Motoneuron Degenerative Mice Reduces Neuronal Death and Improves Motor Function

    OpenAIRE

    Pastor, Diego; Viso-León, Mari Carmen; Botella-López, Arancha; Jaramillo-Merchan, Jesus; Moraleda, Jose M.; Jones, Jonathan; Martínez, Salvador

    2013-01-01

    Bone marrow has proved to be an adequate source of stem cells for the treatment of numerous disorders, including neurodegenerative diseases. Bone marrow can be easily and relatively painlessly extracted from a patient or allogenic donor and then transplanted into the degenerative area. Here, the grafted cells will activate a number of mechanisms in order to protect, repair, and/or regenerate the damaged tissue. These properties make the bone marrow a feasible source for cell therapy. In this ...

  6. Allogeneic bone marrow transplantation versus chemotherapy in high-risk childhood acute lymphoblastic leukaemia in first remission. Associazione Italiana di Ematologia ed Oncologia Pediatrica (AIEOP) and the Gruppo Italiano Trapianto di Midollo Osseo (GITMO).

    Science.gov (United States)

    Uderzo, C; Valsecchi, M G; Balduzzi, A; Dini, G; Miniero, R; Locatelli, F; Rondelli, R; Pession, A; Arcese, W; Bacigalupo, A; Polchi, P; Andolina, M; Messina, C; Conter, V; Aricó, M; Galimberti, S; Masera, G

    1997-02-01

    We compared the outcome of children with high-risk acute lymphoblastic leukaemia (HR-ALL) in first complete remission (first CR) treated with chemotherapy (CHEMO) or with allogeneic bone marrow transplantation (BMT) in a multicentre study. All children treated by the Italian Paediatric Haematology Oncology Association for HR-ALL in first CR between 1986 and 1994 were eligible for the study. 30 children were given BMT at a median of 4 months from first CR, with preparative regimens including total-body irradiation (n = 25/30). 130 matched controls for BMT patients were identified among 397 HR-ALL CHEMO patients. Matching on main prognostic factors and duration of first CR was adopted to control the selection and time-to-transplant biases. The comparative analysis was based on the results of a stratified Cox model. The estimated hazard ratios of BMT versus CHEMO at 6 months, 1 year and 2 years after CR were 1.38 (CI 0.59-3.24), 0.69 (CI 0.27-1.77) and 0.35 (CI 0.06-1.91), with an overall non-significant difference between the two groups (P = 0.34). With a median follow-up of 4 years, the disease-free survival was 58.5% (SE 9.3) in the BMT group and 47.7% (SE 4.8) in the CHEMO group, at 4 years from CR. Non-leukaemic death occurred in 4% of CHEMO and 10% of BMT patients. In the BMT group the estimated cumulative incidence of relapse at 1.5 years from CR was 31.5% (SE 8.8) and did not change thereafter, whereas in the CHEMO group the corresponding figure was 29.2% (SE 4.1) and the incidence continued to increase thereafter (48.2% (SE 4.8) at 4 years from CR). The results of this study suggest that, with respect to the CHEMO group, the higher risk of early failure in the BMT group is outweighed by the lower risk of relapse after 1 year. Results prompt the need for a prospective study, in order to demonstrate the likely advantage of BMT in HR childhood ALL in first CR.

  7. Lasting engraftment of histoincompatible bone marrow cells in dogs

    Energy Technology Data Exchange (ETDEWEB)

    Vriesendorp, H.M.; Klapwijk, W.M.; van Kessel, A.M.C.; Zurcher, C.; van Bekkum, D.W.

    1981-05-01

    Conditioning protocols were tested for their efficacy in increasng the incidence of engraftment of histoincompatible dog bone marrow cells. Cyclophosphamide and total body irradiation (TBI), Corynebacterium parvum and TBI, a 3- or 5-day delayed transfusion of bone marrow cells after TBI, or an increase in the number of donor bone marrow cells or lymphocytes appeared to be ineffective. These protocols were previously reported to promote recovery of splenic hemopoiesis in mice in short-term assays. The noted discrepancy between studies with mice and dogs invalidated allogeneic resistance as measured in the mouse spleen assay as a model for bone marrow allograft rejection. Intravenous treatment with silica particles or L-asparaginase did improve the engraftment rate after 7.5 Gy TBI. Low efficiency and significant extra toxicity restrict the applicability of these procedures. The most promising conditioning schedule found appeared to be two fractions of 6.0 Gy TBI separated by a 72-h interval. Prolonged survival was noted after transplantation of bone marrow cells from a one-DLA haplotype-mismatched donor. Possibilities for further improvement of this protocol are discussed.

  8. Lasting engraftment of histoincompatible bone marrow cells in dogs

    Energy Technology Data Exchange (ETDEWEB)

    Vriesendorp, H.M.; Klapwijk, W.M.; van Kessel, A.M.; Zurcher, C.; van Bekkum, D.W.

    1981-05-01

    Conditioning protocols were tested for their efficacy in increasing the incidence of engraftment of histoincompatible dog bone marrow cells. Cyclophosphamide and total body irradation (TBI), Corynebacterium parvum and TBI, a 3- or 5-day delayed transfusion of bone marrow cells after TBI, or an increase in the number of donor bone marrow cells or lymphocytes appeared to be ineffective. These protocols were previously reported to promote recovery of splenic hemopoiesis in mice in short-term assays. The noted discrepancy between studies with mice and dogs invalidated allogeneic resistance as measured in the mouse spleen assay as a model for bone marrow allograft rejection. Intravenous treatment with silica particles or L-asparaginase did improve the engraftment rate after 7.5 Gy TBI. Low efficiency and significant extra toxicity restrict the applicability of these procedures. The most promising conditioning schedule found appeared to be two fractions of 6.0 Gy TBI separated by a 72-hr interval. Prolonged survival was noted after transplantation of bone marrow cells from a one-DLA haplo-type-mismatched donor. Possibilities for further improvement of this protocol are discussed.

  9. Bone Marrow Matters

    Science.gov (United States)

    Dunne, Mark; Maklad, Rania; Heaney, Emma

    2014-01-01

    As a final-year student teacher specialising in primary science, Emma Heaney faced the challenge of having to plan, organise, and conduct a small-scale, classroom-based research project. She had to teach about bones in the final block practice session and thought it would be a good idea to bring in some biological specimens obtained from the local…

  10. Radiation dose as a factor in host preparation for bone marrow transplantation across different genetic barriers

    International Nuclear Information System (INIS)

    Engraftment of donor bone marrow in relation to total body irradiation (TBI) dose was studied in syngeneic (B6→B6), MHC-compatible (BALB.B→B6) and MHC-incompatible allogeneic (BALB/c→B6) murine bone marrow transplantation (BMT) models. The steep dose-response relationships show how engraftment is critically dependent on TBI dose, as well as the genetic disparity between donor and host. (author)

  11. Treatment of severe post-traumatic bone defects with autologous stem cells loaded on allogeneic scaffolds.

    Science.gov (United States)

    Vulcano, Ettore; Murena, Luigi; Cherubino, Paolo; Falvo, Daniele A; Rossi, Antonio; Baj, Andreina; Toniolo, Antonio

    2012-12-01

    Mesenchymal stem cells may differentiate into angiogenic and osteoprogenitor cells. The effectiveness of autologous pluripotent mesenchymal cells for treating bone defects has not been investigated in humans. We present a case series to evaluate the rationale of using nucleated cells from autologous bone marrow aspirates in the treatment of severe bone defects that failed to respond to traditional treatments. Ten adult patients (mean age, 49.6-years-old) with severe bone defects were included in this study. Lower limb bone defects were >or=5 cm3 in size, and upper limb defects .or=2 cm3. Before surgery, patients were tested for antibodies to common pathogens. Treatment consisted of bone allogeneic scaffold enriched with bone marrow nucleated cells harvested from the iliac crest and concentrated using an FDA-approved device. Postsurgery clinical and radiographic follow-up was performed at 1, 3, 6, and 12 months. To assess viability, morphology, and immunophenotype, bone marrow nucleated cells were cultured in vitro, tested for sterility, and assayed for the possible replication of adventitious (contaminating) viruses. In 9 of 10 patients, both clinical and radiographic healing of the bone defect along with bone graft integration were observed (mean time, 5.6 months); one patient failed to respond. No post-operative complications were observed. Bone marrow nucleated cells were enriched 4.49-fold by a single concentration step, and these enriched cells were free of microbial contamination. The immunophenotype of adherent cells was compatible with that of mesenchymal stem cells. We detected the replication of Epstein-Barr virus in 2/10 bone marrow cell cultures tested. Hepatitis B virus, cytomegalovirus, parvovirus B19, and endogenous retrovirus HERV-K replication were not detected. Overall, 470 to 1,150 million nucleated cells were grafted into each patient. This case series, with a mean follow-up of almost 2 years, demonstrates that an allogeneic bone scaffold

  12. Bone marrow edema in sports: General concepts

    International Nuclear Information System (INIS)

    This paper will discuss the value of medical imaging in the detection and follow-up of bone marrow edema (BME), resulting from acute and chronic trauma in sports. MR imaging is the only imaging technique that allows direct evaluation of bone marrow edema in sports medicine. The use of fat suppressed T2-weighted or STIR images is particularly appropriate to detect bone marrow edema. The extent of bone marrow edema reflects the biomechanics of trauma. Compressive forces between two bony structures will result in extensive areas of bone marrow edema, whereas distraction forces provoke more subtle areas of bone marrow edema at the insertion of supporting structures of joints. In most clinical situations, a combination of compression and distraction forces is present, causing a complex pattern of bone marrow edema. A meticulous pattern approach of the distribution of these bone marrow changes around a joint can reveal in most instances the underlying mechanism of trauma. This may be helpful to analyze which joint supporting structures may be at risk. In the acute setting, plain radiography and CT scan may have an additional role in the detection of small avulsion fractures occurring at the site of minor areas of bone marrow edema. The clinical significance and natural history of bone marrow edema is still a matter of debate

  13. Bone marrow edema in sports: General concepts

    Energy Technology Data Exchange (ETDEWEB)

    Vanhoenacker, F.M. [AZ Sint-Maarten Duffel-Mechelen, Department of Radiology, Rooienberg 25, B-2570 Duffel (Belgium) and University Hospital Antwerp, Department of Radiology, Wilrijkstraat 10, B-2650 Edegem (Belgium)]. E-mail: filip.vanhoenacker@telenet.be; Snoeckx, A. [AZ Sint-Maarten Duffel-Mechelen, Department of Radiology, Rooienberg 25, B-2570 Duffel (Belgium); University Hospital Antwerp, Department of Radiology, Wilrijkstraat 10, B-2650 Edegem (Belgium)

    2007-04-15

    This paper will discuss the value of medical imaging in the detection and follow-up of bone marrow edema (BME), resulting from acute and chronic trauma in sports. MR imaging is the only imaging technique that allows direct evaluation of bone marrow edema in sports medicine. The use of fat suppressed T2-weighted or STIR images is particularly appropriate to detect bone marrow edema. The extent of bone marrow edema reflects the biomechanics of trauma. Compressive forces between two bony structures will result in extensive areas of bone marrow edema, whereas distraction forces provoke more subtle areas of bone marrow edema at the insertion of supporting structures of joints. In most clinical situations, a combination of compression and distraction forces is present, causing a complex pattern of bone marrow edema. A meticulous pattern approach of the distribution of these bone marrow changes around a joint can reveal in most instances the underlying mechanism of trauma. This may be helpful to analyze which joint supporting structures may be at risk. In the acute setting, plain radiography and CT scan may have an additional role in the detection of small avulsion fractures occurring at the site of minor areas of bone marrow edema. The clinical significance and natural history of bone marrow edema is still a matter of debate.

  14. Bone marrow reconversion – imaging of physiological changes in bone marrow

    International Nuclear Information System (INIS)

    Reconversion of bone marrow is a reverse process of natural replacement of red marrow by yellow marrow. The occurrence of reconversion can be misleading and challenging in interpretation of musculoskeletal system imaging. Changes of signal intensity in bone marrow are frequently observed in radiological routine and its diversity can cause a suspicion of pathologic findings. Therefore, the knowledge about distribution of red and yellow bone marrow depending on age, concomitant diseases and presentation of the patient are essential for MR image interpretation

  15. Prognosis and bone marrow recovery indicators in bone marrow transplantation after total body irradiation

    International Nuclear Information System (INIS)

    Oxidative stress and reticulocyte maturity index (RMI) were studied in 27 patients who underwent bone marrow transplantation (BMT). Plasmatic lipo peroxide levels of those patients with unfavorable evolution were significantly increases on days 12-14 post-transplant (median 1,83 μM, range 0.78-5.82) compared with preconditioning levels (median 1.05 μM, range 0.36-1.84) (p<0.05). Patients with favorable evolution revealed significantly higher lipo peroxide levels during conditioning regime (median 1.42 μM, range 0.31-4.50) (p<0.05). Starting from the 3rd. post-transplant week a significant and continuous decrease was observed, with a median of 0.77 μM (range 0.21-1.48) (p<0.05) for the 3rd, and a median of 0.60 μM (range 0.11-1.48) for the 4th. week (p<0.01). A significant increase in total antioxidant activity was observed in the three patients who died up to the 35 days post-transplant. Recovery of bone marrow function was detected by RMI after a median time of 17 days (range 11-24) post-allogeneic transplantation. The threshold established for absolute neutrophil count was achieved after a median of 21 days (range 14-28) (p<0.001). An increase of plasma lipo peroxides on days 12-14 post transplant may be a predictive value of unfavourable evolution. RMI was the earlier indicator of engraftment in allogeneic BMT. (author)

  16. Dynamic scintigraphy of bone and bone marrow in multiple myeloma patients with bone-marrow transplants

    International Nuclear Information System (INIS)

    Purpose: To determine whether dynamic registration at bone and bone-marrow scintigraphy produces additional information compared to subsequent static registrations of bone-marrow transplants in multiple myeloma patients. Material and Methods: In a prospective study, 8 dynamic bone and 6 dynamic bone-marrow scintigraphies were performed in 10 patients. The dynamic scintigraphies were compared with conventional radiography, MR images, and static scintigraphies of bone and bone marrow. Results: No additional information was revealed by the dynamic registration method; on the contrary, 4 of the 8 known lesions were not discerned at dynamic registration. An incidental observation was that the time-activity curves of both radiopharmaceuticals had a specific pattern. (orig.)

  17. MR appearances of bone marrow in children following bone marrow transplantation

    International Nuclear Information System (INIS)

    Two cases are presented of children who demonstrated complete absence of bone marrow signal on MR imaging of the spine following bone marrow transplantation. The possible causes for these appearances are discussed. (orig.)

  18. Increasing utilization of bone marrow transplantation. II. Results of the 1985-1987 survey.

    Science.gov (United States)

    Bortin, M M; Rimm, A A

    1989-09-01

    The International Bone Marrow Transplant REgistry conducts periodic surveys to determine activity in the field of allogeneic and syngeneic bone marrow transplantation. Data were reported to the IBMTR by 258 institutions in 41 countries regarding their patients who received bone marrow transplants during the period 1985-1987. To the best of our knowledge, the data represent essentially all bone marrow transplants (exclusive of autologous transplants) performed in the past 3 years. A total of 10,887 patients received bone marrow transplants; 73% were for leukemia, 11% for other malignant diseases, 9% for severe aplastic anemia and related disorders, 3% for immune deficiency diseases, 2% for thalassemia major, and 2% for genetic, metabolic, and several other rare diseases. 161 (62%) of the 258 institutions performed fewer than one transplant per month. More than 50% of the patients were transplanted in 37 institutions. 46% of the world's bone marrow transplants were performed in North America, 42% in Western Europe, 5% in Asia, 3% in Australia and New Zealand, 2% in the Mideast and Africa, 1% in South and Central America, and 1% in Eastern Europe and the USSR. The data reflect continued growth in utilization of allogeneic and syngeneic bone marrow transplantation and quantify the annual increases in the number of patients receiving transplants.

  19. Bone marrow aluminium storage in renal failure.

    OpenAIRE

    Kaye, M.

    1983-01-01

    Using the staining method for aluminium with the ammonium salt of aurine tricarboxylic acid, aluminon, 18 patients with end stage renal disease gave positive reactions in iliac crest bone biopsies and 11 of these had positive staining in the bone marrow. In one the marrow was positive and the bone negative. The marrow reaction is putatively regarded as caused by aluminium storage in unidentified cells, possibly of the macrophage system which are strongly fluorescent when examined after prior ...

  20. Preservation of Bone Marrow for Clinical Use

    International Nuclear Information System (INIS)

    The author describes the results of many years' research into the problems of obtaining and preserving bone marrow in the quantities required for clinical use. Particular attention is paid to the preservation and long-term storage of bone marrow at ultra- low temperatures (-196°C), its separation from the protective medium and methods of determining whether the biological functions of thawed bone marrow have been impaired. (author)

  1. Diabetes mellitus induces bone marrow microangiopathy

    OpenAIRE

    Oikawa, Atsuhiko; Siragusa, Mauro; Quaini, Federico; Mangialardi, Giuseppe; Katare, Rajesh G.; Caporali, Andrea; van Buul, Jaap D.; van Alphen, Floris P. J.; Graiani, Gallia; Spinetti, Gaia; Kraenkel, Nicolle; Prezioso, Lucia; Emanueli, Costanza; Madeddu, Paolo

    2009-01-01

    The impact of diabetes on the bone marrow (BM) microenvironment was not adequately explored. We investigated whether diabetes induces microvascular remodeling with negative consequence for BM homeostasis.

  2. Establishment and evaluation of allogenic animal bone marrow and orthotopic liver transplantation model in rats%同种异体大鼠骨髓及肝联合移植动物模型的建立及意义

    Institute of Scientific and Technical Information of China (English)

    王效民; 傅锦波; 黄小进; 罗琪; 李岗山; 卢明珠; 余德

    2008-01-01

    Objective To establish the allogeneic animal bone marrow and orthotopic liver transplantation model in rats,and investigate the method and feasibility for enhancing the stability and prolonods:In group Ⅰ,orthotopic liver transplantations in rats were performed using modified Kamada's two-cuff (TBI,11 Gy),and in group Ⅲ,Wistar rats were induced with TBI(7 Gy),followed by infusion of SD kg)intraperitoneally 2 days later.According to the Gene Bank,the specific primer of rat SRY gene was designed.Recipient rats were detected for donor origin cells in the peripheral blood lymphocytes on day 10 and 20 by polyrnerase chain reaction (PCR).The PCR product was analyzed by electrophoresis.Orthotopic liver transplantations were Derformed in rats 28 days later.The tolerance mechanism through delayed type hypersensitivity(DTH)and survival time after liver transplantation in the rats was explored.Results Chimera of SD rats could be found in the peripheral blood lymphocytes of the tolerance Wistar rats in groups Ⅱ and Ⅲ.Wistar rats were specifically tolerant to the SD rats in DTH.The rats in group Ⅰ died after 4-5 days,and the one-week survival rate in groups Ⅱ and Ⅲ was 80% and 84.2% respectively.Conclusion Treatment of 7 Gy TBI and the injection of CTX(50 mg/kg)plus donor bone marrow transplantation(BMT)can successfully establish rat chimera model,induce specific immune tolerance and greatly prolong the survival time of liver transplantation model in rats.%目的 通过建立同种异体大鼠骨髓及肝联合移植动物模型,探讨提高大鼠肝移植模型的稳定性和存活率的方法及可行性.方法 将SD大鼠(♂)、Wistar大鼠(♀)分成三组:Ⅰ组大鼠Kamada"二袖套法"行SD→Wistar大鼠肝移植;Ⅱ组Wistar大鼠(♀)TBI(11 Gy),4 h后输人SD大鼠(♂)BMC(8×107),28 d后Kamada"二袖套法"行SD→Wistar大鼠肝移植;Ⅲ组Wistar大鼠(♀)TBI(7 Gy),4h后输入SD大鼠(♂)BMC(8×107),2 d后CTX(50 mg/kg体重)腹腔注射,28 d

  3. Starvation marrow – gelatinous transformation of bone marrow

    Directory of Open Access Journals (Sweden)

    Eric Osgood

    2014-09-01

    Full Text Available Gelatinous bone marrow transformation (GMT, also known as starvation marrow, represents a rare pathological entity of unclear etiology, in which bone marrow histopathology demonstrates hypoplasia, fat atrophy, and gelatinous infiltration. The finding of gelatinous marrow transformation lacks disease specificity; rather, it is an indicator of severe illness and a marker of poor nutritional status, found in patients with eating disorders, acute febrile illnesses, acquired immunodeficiency syndrome, alcoholism, malignancies, and congestive heart failure. We present a middle-aged woman with a history of alcoholism, depression, and anorexia nervosa who presented with failure to thrive and macrocytic anemia, with bone marrow examination demonstrative of gelatinous transformation, all of which resolved with appropriate treatment. To our knowledge, there are very few cases of GMT which have been successfully treated; thus, our case highlights the importance of proper supportive management.

  4. Magnetic resonance imaging of the bone marrow

    Energy Technology Data Exchange (ETDEWEB)

    Baur-Melnyk, Andrea (ed.) [Klinikum der Univ. Muenchen (Germany). Inst. fuer Klinische Radiologie

    2013-08-01

    The first book devoted to MRI of the bone marrow. Describes the MRI appearances of normal bone marrows and the full range of bone marrow disorders. Discusses the role of advanced MRI techniques and contrast enhancement. On account of its unrivalled imaging capabilities and sensitivity, magnetic resonance imaging (MRI) is considered the modality of choice for the investigation of physiologic and pathologic processes affecting the bone marrow. This book describes the MRI appearances of both the normal bone marrow, including variants, and the full range of bone marrow disorders. Detailed discussion is devoted to malignancies, including multiple myeloma, lymphoma, chronic myeloproliferative disorders, leukemia, and bone metastases. Among the other conditions covered are benign and malignant compression fractures, osteonecrosis, hemolytic anemia, Gaucher's disease, bone marrow edema syndrome, trauma, and infective and non-infective inflammatory disease. Further chapters address the role of MRI in assessing treatment response, the use of contrast media, and advanced MRI techniques. Magnetic Resonance Imaging of the Bone Marrow represents an ideal reference for both novice and experienced practitioners.

  5. Nasopharyngeal carcinoma with bone marrow metastasis.

    Science.gov (United States)

    Zen, H G; Jame, J M; Chang, A Y; Li, W Y; Law, C K; Chen, K Y; Lin, C Z

    1991-02-01

    Five of 23 patients with recurrent nasopharyngeal carcinoma (NPC) were diagnosed to have bone marrow metastasis. They all had advanced local-regional disease, and were treated with neoadjuvant chemotherapy and definitive radiotherapy after the initial diagnosis. Bone marrow metastasis developed 4-24 months later. The clinical features were anemia (5 of 5), leukopenia (3 of 5), thrombocytopenia (4 of 5), sepsis (3 of 5), tenderness of the sternum (3 of 5), and fever (4 of 5). Patients frequently had elevation of serum lactic dehydrogenase (LDH), alkaline phosphatase (ALK-P), and IgG and IgA antibody titers to Epstein-Barr viral capsid antigen when bone marrow involvement was diagnosed. However, clinical manifestations and laboratory tests were not specific. It is important that three patients had normal bone scans. All five patients had a rapid downhill course; four patients died within 23 days, and the fifth 3 months after the diagnosis of bone marrow metastasis. We concluded that bone marrow was a common metastatic site in NPC patients. Bone marrow metastasis adversely affected patients' survival and required a high index of suspicion for diagnosis. We suggested that bone marrow biopsy should be considered as a routine staging procedure in NPC patients and indicated especially when patients presented with abnormal blood counts, sepsis, bone pain, or tenderness of the sternum. It may be positive in the face of a normal bone scan. PMID:1987743

  6. Inherited Bone Marrow Failure Syndromes (IBMFS)

    Science.gov (United States)

    The NCI IBMFS Cohort Study consists of affected individuals and their immediate families in North America who have an inherited bone marrow failure syndrome (IBMFS)-either one that has been specifically identified and defined, or bone marrow failure that appears to be inherited but has not yet been clearly identified as having a genetic basis.

  7. How to exhaust your bone marrow

    DEFF Research Database (Denmark)

    Salomo, Louise; Salomo, Morten; Andersen, Steven A W;

    2013-01-01

    at work and in his spare time, and kept a very thorough training and weight diary. Owing to a high intake of energy and protein drinks he tried to optimise his physical performance and kept a normal body mass index  at 23.7. A bone marrow biopsy showed gelatinous bone marrow transformation, normally...

  8. Legal issues in bone marrow transplantation.

    OpenAIRE

    Holder, A. R.

    1990-01-01

    The article discusses some of the more common legal issues involved in bone marrow transplantation. These include malpractice claims, testing prospective donors for AIDS, sale of bone marrow, informed consent for both donor and recipient, and questions that arise when the donor is a child.

  9. Functional bone marrow scintigraphy in psoriatics

    International Nuclear Information System (INIS)

    24 psoriatics as well as 24 normal healthy adults were studied by functional bone marrow scintigraphy using Tc-99m-labeled human serum albumin millimicrospheres (Tc-99m-HSA-MM). Functional bone marrow scintigraphy is an in vivo test system for the assessment of various functional properties of fixed macrophages. 58% of psoriatics who had no systemic drug treatment demonstrated peripheral extension of the bone marrow space indicating hyperplasia of bone marrow macrophages. This phenomenon could be observed only in one normal subject who was a high-performance sportsman. 83% (n=6) of psoriatics with cirrhosis of liver demonstrated bone marrow extension. The 'capacity' of bone marrow macrophages to engulf Tc-99m-HSA-MM ('uptake ratio') was diminished in 42% of non-treated as well as 66% of psoriatics treated with aromatic retinoid. The phagocytic and proteolytic turnover of Tc-99m-HSA-MM in bone marrow, spleen, and liver was found to be accelerated in 66% of non-treated psoriatics, normal, accelerated or delayed in psoriatics treated with aromatic retinoid as well as considerably delayed in all of the psoriatics with cirrhosis of liver. Functional bone marrow scintigraphy proved to be an appropriate in vivo test system to reveal abnormalities of fixed macrophages in psoriatics. Furthermore, theratpeutic effects as well as influences of pre-existing disorders on different macrophage populations can be assessed. (Author)

  10. Study on proliferative responses to host Ia antigens in allogeneic bone marrow chimera in mice: sequential analysis of the reactivity and characterization of the cells involved in the responses

    International Nuclear Information System (INIS)

    Irradiation bone marrow chimeras were established by reconstitution of lethally irradiated AKR mice with C57BL/10 marrow cells to permit serial analysis of the developing reactivities of lymphocytes from such chimeras, [B10----AKR], against donor, host, or third party antigens. We found that substantial proliferative responses to Ia antigens of the recipient strain and also to third party antigens were generated by the thymocytes obtained from the irradiation chimeras at an early stage after bone marrow reconstitution. The majority of the responding thymocytes had surfaces lacking demonstrable peanut agglutinin receptors and were donor type Thy-1+, Ly-2-, and L3T4+ in both anti-recipient and anti-third party MLR. In anti-host responses, however, Ly-2+ thymocytes seemed to be at least partially involved. This capacity of thymus cells to mount a response to antigens of the recipient strain declined shortly thereafter, whereas the capacity to mount MLR against third party antigens persisted. The spleen cells of [B10----AKR] chimeras at the same time developed a more durable capability to exhibit anti-host reactivities and a permanent capability of reacting to third party allo-antigens. The stimulator antigens were Ia molecules on the stimulator cells in both anti-recipient and anti-third party MLR. The responding splenocytes were of donor origin and most of them had Thy-1+, Ly-1+2-, and L3T4+ phenotype

  11. An alternative model of vascularized bone marrow transplant: partial femur transplantation.

    Science.gov (United States)

    Chen, Jian-Wu; Chen, Chen; Su, Ying-Jun; Yan, Lun; Wang, Shi-Ping; Guo, Shu-Zhong

    2014-12-01

    The vascularized whole femur transplantation model is one of the commonly used vascularized bone marrow transplant models. It involves technical complexity and morbidities. To optimize this model, we took 2/3 femur as the carrier of bone marrow cells, and developed a vascularized partial femur model. Four experimental groups were carried out, namely, the syngeneic partial femur transplantation, allogeneic partial femur transplantation with or without cyclosporine A, and allogeneic whole femur transplantation with cyclosporine A. The results showed that the partial femur model was technically simpler and shortened the operative and ischemia time compared to the whole femur model. Gross and histologic appearance confirmed the viability of femur, and its bone marrow inside the bone could also maintain normal morphologically at 60-day posttransplant. Besides, donor multilineage chimerism could be continuously detected in immunosuppressed allogeneic partial femur recipients at 1-, 2-, 3-, 4-, and 8-week posttransplant, and it showed no significant differences when compared with whole femur transplantation. Meanwhile, long-term engraftment of donor-origin cells was also confirmed in recipients' bone marrow, lymph nodes, and spleen, but not in thymus. Therefore, the vascularized partial femur can serve as a continuous resource of bone morrow cells and may provide a useful tool for the study of immune tolerance in vascularized composite allotransplantation.

  12. Bone marrow oedema associated with benign and malignant bone tumours

    Energy Technology Data Exchange (ETDEWEB)

    James, S.L.J. [Department of Radiology, Royal Orthopaedic Hospital, Birmingham, B31 2AP (United Kingdom)], E-mail: steven.james@roh.nhs.uk; Panicek, D.M. [Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021 (United States); Davies, A.M. [Department of Radiology, Royal Orthopaedic Hospital, Birmingham, B31 2AP (United Kingdom)

    2008-07-15

    Bone marrow oedema is associated with a wide variety of pathological processes including both benign and malignant bone tumours. This imaging finding in relation to intraosseous tumours can aid in providing a more focused differential diagnosis. In this review, we will discuss the MR imaging of bone marrow oedema surrounding intraosseous neoplasms. The different pulse sequences used in differentiating underlying tumour from surrounding oedema are discussed along with the role of dynamic contrast enhanced MRI. Benign lesions commonly associated with bone marrow oedema include osteoid osteoma, osteoblastoma, chondroblastoma and Langerhan's cell histiocytosis. Metastases and malignant primary bone tumours such as osteosarcoma, Ewing's sarcoma and chondrosarcoma may also be surrounded by bone marrow oedema. The imaging findings of these conditions are reviewed and illustrated. Finally, the importance of bone marrow oedema in assessment of post chemotherapeutic response is addressed.

  13. Bone marrow examination in pancytopenia.

    Science.gov (United States)

    Rangaswamy, M; Prabhu; Nandini, N M; Manjunath, G V

    2012-08-01

    Pancytopenia is defined by reduction of all the three formed elements of blood below the normal reference. It may be a manifestation of a wide variety of disorders, which primarily or secondarily affect the bone marrow. Haematological investigation forms the bedrock in the management of patients with pancytopenia and therefore needs detailed study. The total number of cases studied were 100 over a period of two years in the department of pathology, JSS Hospital, Mysore. Megaloblastic anaemia (33%) was the commonest cause of pancytopenia. Other causes were nutritional anaemia (16%), aplastic anaemia (14%), hypersplenism (10%), sepsis (9%) and leukaemia (5%). Less common causes were alcoholic liver disease, haemolytic anaemia, HIV, dengue, systemic lupus erythematosus, viral hepatitis, disseminated TB and multiple myeloma. Most of the patients were in the age group of 11-30 years with a male:female ratio of 1.6:1.Generalised weakness and fatigue (88%) were the commonest presenting complaints. Haemoglobin level varied from 1-10 g/dl with majorIty (70%) of them in the range of 5.1-10 g/dI. TLC was in the range of 500-4000 cells/cmm. Most (34%) of them had 3100-4000 cells/cmm. Platelet count was in the range of 4000-1,40,000 cells/cmm. Reticulocyte count varied from 0.1%-15% with majority (82%) of them ranging from 0.1%-2%. The bone marrow cellularity was hypocellular in 14%, hypercellular in 75%, and normocellular in 11% of the patients. Pancytopenia is a relatively common entity with inadequate attention in Indian subcontinent. A comprehensive clinical and haematological study of patients with pancytopenia will usually help in the identification of the underlying cause. However in view of wide array of aetiologies, pancytopenia continues to be a diagnostic challenge for haematologists.

  14. Effects of supralethal total body irradiation and bone marrow reconstitution upon immunologic memory

    International Nuclear Information System (INIS)

    The transplantation of bone marrow from prospectively selected genotypically and pedigree DLA-identical donors into supralethally irradiated littermate and nonlittermate recipients within the Copperstown beagle colony has regularly resulted in the establishment of long-term chimerism, with no evidence of graft-versus-host disease in the recipients. It has been demonstrated that irradiated recipients exhibit significant decreases in their ability to muster primary immunological responses during the first months after reconstitution with bone marrow. Beyond the documented capacity of preirradiation blood transfusions to interfere with subsequent engraftment of allogeneic marrow, however, there have been no systematic studies of the possible effects of irradiation and bone marrow transplantation upon immunologic memory. The present study was designed in order to assess this question in greater detail, with particular regard to the effects of irradiation and bone marrow reconstitution upon host sensitization to skin allografts. The results indicate that, within the experimental limitations described, the state of sensitivity produced by first set skin allograft rejection is not affected significantly by supralethal total body irradiation and reconstitution of the recipient with allogeneic bone marrow

  15. 异基因BMSC对重型再障患者T细胞免疫功能影响的研究%Effects of allogeneic bone marrow mesenchymal stem cells on T lymphocytes in patients with severe aplastic anemia

    Institute of Scientific and Technical Information of China (English)

    余卫; 李萡; 罗英; 谭雪芳; 陈玲珍

    2014-01-01

    目的:探索异基因骨髓间充质干细胞( allo-BMSC)对重型再生障碍性贫血( SAA)患者T细胞免疫功能的影响。方法:将allo-BMSC与SAA患者( n=15)外周血T细胞按不同比例( allo-BMSC:T cell分别为0∶1,1∶100,1∶50,1∶25)及进行共培养。72 h后,检测T cell数及allo-BMSC:T cell分别为0∶1(对照组)和1∶25(allo-BMSC组)上清中IL-10、IFN-γ、TNFα的含量。结果:(1).不同比例allo-BMSC(0∶1,1∶100,1∶50,1∶25)对SAA患者T淋巴细胞增殖抑制率分别为3%±2%,51%±17%,64%±21%,73%±18%,抑制作用与allo-BMSC的数量呈正相关(r=0.684,P<0.001);(2).allo-BMSC组IL-10浓度显著增加[(300±175)ng/mL vs (25±14)pg/mL,P<0.05],allo-BMSC组IFN-γ浓度显著降低[(2.1±1.5)ng/mL vs(3.5±1.9) ng/mL,P<0.05];allo-BMSC组TNFα浓度显著降低[(8±5)pg/mL vs (17±11)pg/mL,P<0.05]。结论:allo-BMSC可以抑制SAA患者T细胞增殖,并减低Th1细胞炎性因子的表达,而增加Th2细胞因子的表达。%Objective:To explore the effects of allogeneic bone marrow mesenchymal stem cells ( allo-BMSCs) on T lymphocytes in patients with severe aplastic anemia. Methods: The allo-BMSCs were cocultured with T cells derived from 15 patients with severe aplastic anemia ( allo-BMSC/T cell ratio, 0∶1, 1∶100, 1∶50 and 1∶25 ) . T cells count and cytokine levels ( IL-10, IFN-γ and TNF-α) in culture supernatants were determined in control group ( allo-BMSC/T cell ratio, 0:1) and allo-BMSC group ( allo-BMSC/T cell ratio, 0:25) after 72 hours of cultivation. Results: The allo-BMSCs of different ratios ( 0∶1, 1∶100, 1∶50, 1∶25) resulted in the suppression rate of proliferation of 3%± 2%, 51%± 17%,64%± 21% and 73%± 18%,respectively,suggesting a positive correlation between the inhibitory effects and allo-BMSC count ( r=0.684,P<0.001). The allo-BMSCs group was associated with markedly higher levels of IL-10 [(300±175)ng/mL vs (25

  16. Therapy Effect: Impact on Bone Marrow Morphology.

    Science.gov (United States)

    Li, K David; Salama, Mohamed E

    2016-03-01

    This article highlights the most common morphologic features identified in the bone marrow after chemotherapy for hematologic malignancies, growth-stimulating agents, and specific targeted therapies. The key is to be aware of these changes while reviewing post-therapeutic bone marrow biopsies and to not mistake reactive patterns for neoplastic processes. In addition, given the development and prevalent use of targeted therapy, such as tyrosine kinase inhibitors and immune modulators, knowledge of drug-specific morphologic changes is required for proper bone marrow interpretation and diagnosis.

  17. Intravenous transplantation of bone marrow mesenchymal stem cells promotes neural regeneration after traumatic brain injury

    Institute of Scientific and Technical Information of China (English)

    Fatemeh Anbari; Mohammad Ali Khalili; Ahmad Reza Bahrami; Arezoo Khoradmehr; Fatemeh Sadeghian; Farzaneh Fesahat; Ali Nabi

    2014-01-01

    To investigate the supplement of lost nerve cells in rats with traumatic brain injury by intrave-nous administration of allogenic bone marrow mesenchymal stem cells, this study established a Wistar rat model of traumatic brain injury by weight drop impact acceleration method and ad-ministered 3 × 106 rat bone marrow mesenchymal stem cells via the lateral tail vein. At 14 days after cell transplantation, bone marrow mesenchymal stem cells differentiated into neurons and astrocytes in injured rat cerebral cortex and rat neurological function was improved significant-ly. These findings suggest that intravenously administered bone marrow mesenchymal stem cells can promote nerve cell regeneration in injured cerebral cortex, which supplement the lost nerve cells.

  18. Bone- and bone marrow scintigraphy in Gaucher disease type 1

    Energy Technology Data Exchange (ETDEWEB)

    Mikosch, P. [Dept. of Nuclear Medicine and Endocrinology, State Hospital Klagenfurt (Austria); Dept. of Internal Medicine II, State Hospital Klagenfurt (Austria); Zitter, F. [Dept. of Internal Medicine II, State Hospital Klagenfurt (Austria); Gallowitsch, H.J.; Lind, P. [Dept. of Nuclear Medicine and Endocrinology, State Hospital Klagenfurt (Austria); Wuertz, F. [Dept. of Pathology, State Hospital Klagenfurt (Austria); Mehta, A.B.; Hughes, D.A. [Lysosomal Storage Disorder Unit, Dept. of Academic Haematology, Royal Free and Univ. Coll. Medical School, London (United Kingdom)

    2008-07-01

    Scintigraphy is a method for imaging metabolism and should be viewed as complimentary to morphological imaging. Bone and bone marrow scintigraphy can particularly contribute to the detection of focal disease in Gaucher disease. In bone crises it can discriminate within three days after pain onset between local infection and aseptic necrosis. A further advantage of bone- and bone marrow scintigraphy is the visualization of the whole skeleton within one setting. Whole body imaging for focal lesions might thus be an objective in GD, in particular in patients complaining of several painful sites. Direct imaging of bone marrow deposits in GD by MIBI scintigraphy might be of special interest in children in whom bone marrow undergoes a developmental conversion from red to yellow marrow in the ap-pendicular skeleton. MRI interpretation in young GD patients is thus difficult in order to estimate the exact amount and extent of bone marrow infiltration by Gaucher cells. 99mTc-MIBI scintigraphy with its direct visualization of lipid storage could thus add interesting additional information not shown with other methods including MRI. Although MRI is the most accepted imaging modality in assessing the skeletal status in GD, a selective use of scintigraphy for imaging bone and bone marrow may add information in the evaluation of patients with Gaucher disease.

  19. Late renal dysfunction in adult survivors of bone marrow transplantation

    International Nuclear Information System (INIS)

    Until recently long-term renal toxicity has not been considered a major late complication of bone marrow transplantation (BMT). Late renal dysfunction has been described in a pediatric population status post-BMT which was attributable to the radiation in the preparatory regimen. A thorough review of adults with this type of late renal dysfunction has not previously been described. Fourteen of 103 evaluable adult patients undergoing allogeneic (96) or autologous (7) bone marrow transplantation, predominantly for leukemia and lymphomas, at the Medical College of Wisconsin (Milwaukee, WI) have had a syndrome of renal insufficiency characterized by increased serum creatinine, decreased glomerular filtration rate, anemia, and hypertension. This syndrome developed at a median of 9 months (range, 4.5 to 26 months) posttransplantation in the absence of specific identifiable causes. The cumulative probability of having this renal dysfunction is 20% at 1 year. Renal biopsies performed on seven of these cases showed the endothelium widely separated from the basement membrane, extreme thickening of the glomerular basement membrane, and microthrombi. Previous chemotherapy, antibiotics, and antifungals as well as cyclosporin may add to and possibly potentiate a primary chemoradiation marrow transplant renal injury, but this clinical syndrome is most analogous to clinical and experimental models of radiation nephritis. This late marrow transplant-associated nephritis should be recognized as a potentially limiting factor in the use of some intensive chemoradiation conditioning regimens used for BMT. Some selective attenuation of the radiation to the kidneys may decrease the incidence of this renal dysfunction

  20. Effect of bone marrow mesenchymal stem cells on the proliferation of bone marrow CD34~+ cells in vitro

    Institute of Scientific and Technical Information of China (English)

    王荣

    2013-01-01

    Objective To investigate the effect on the marrow CD34+ cells by bone marrow mesenchymal stem cells(BMMSC),VarioMACS was used to sort bone marrow CD34+ cells,and then the purity of CD34+ cell was tested by FCM. Marrow mononuclear cells from abortion fetal bone marrow were isolated,and BMMSC were

  1. Bone Marrow Stress Decreases Osteogenic Progenitors.

    Science.gov (United States)

    Ng, Adeline H; Baht, Gurpreet S; Alman, Benjamin A; Grynpas, Marc D

    2015-11-01

    Age-related bone loss may be a result of declining levels of stem cells in the bone marrow. Using the Col2.3Δtk (DTK) transgenic mouse, osteoblast depletion was used as a source of marrow stress in order to investigate the effects of aging on osteogenic progenitors which reside in the marrow space. Five-month-old DTK mice were treated with one or two cycles of ganciclovir to conditionally ablate differentiated osteoblasts, whereas controls were saline-treated. Treatment cycles were two weeks in length followed by four weeks of recovery. All animals were sacrificed at 8 months of age; bone marrow stromal cells (BMSCs) were harvested for cell culture and whole bones were excised for bone quality assessment. Colony-forming unit (CFU) assays were conducted to investigate the osteogenic potential of BMSC in vitro, and RNA was extracted to assess the expression of osteoblastic genes. Bone quality assessments included bone histomorphometry, TRAP staining, microcomputed tomography, and biomechanical testing. Osteoblast depletion decreased CFU-F (fibroblast), CFU-ALP (alkaline phosphatase), and CFU-VK (von Kossa) counts and BMSC osteogenic capacity in cell culture. Ex vivo, there were no differences in bone mineral density of vertebrae or femurs between treatment groups. Histology showed a decrease in bone volume and bone connectivity with repeated osteoblast depletion; however, this was accompanied by an increase in bone formation rate. There were no notable differences in osteoclast parameters or observed bone marrow adiposity. We have developed a model that uses bone marrow stress to mimic age-related decrease in osteogenic progenitors. Our data suggest that the number of healthy BMSCs and their osteogenic potential decline with repeated osteoblast depletion. However, activity of the remaining osteoblasts increases to compensate for this loss in progenitor osteogenic potential. PMID:26220824

  2. MURINE MOBILIZED PERIPHERAL BLOOD STEM CELLS HAVE A LOWER CAPACITY THAN BONE MARROW TO INDUCE MIXED CHIMERISM AND TOLERANCE

    OpenAIRE

    Koporc, Zvonimir; Pilat, Nina; Nierlich, Patrick; Blaha, Peter; Bigenzahn, Sinda; Pree, Ines; Selzer, Edgar; Sykes, Megan; Muehlbacher, Ferdinand; Wekerle, Thomas

    2008-01-01

    Allogeneic bone marrow transplantation (BMT) under costimulation blockade allows induction of mixed chimerism and tolerance without global T cell depletion. The mildest such protocols without recipient cytoreduction, however, require clinically impracticable bone marrow (BM) doses. The successful use of mobilized peripheral blood stem cells (PBSC) instead of BM in such regimens would provide a substantial advance, allowing transplantation of higher doses of hematopoietic donor cells. We thus ...

  3. Visceral Leishmaniasis: A Differential Diagnosis to Remember after Bone Marrow Transplantation

    Directory of Open Access Journals (Sweden)

    Margarida Dantas Brito

    2014-01-01

    Full Text Available Leishmania infection in immunocompromised hosts is reported in the literature, mostly concerning human immunodeficiency virus infected patients. It is not well characterized in the context of stem cell transplantation. We report a rare case clinical case of visceral leishmaniasis after allogeneic bone marrow transplantation. A 50-year-old Caucasian male was referred to allogeneic bone marrow transplantation with a high-risk acute lymphoblastic B leukemia in first complete remission. Allogeneic SCT was performed with peripheral blood stem cells from an unrelated Portuguese matched donor. In the following months, patient developed mild fluctuating cytopenias, mostly thrombocytopenia (between 60 and 80∗109/L. The only significant complaint was intermittent tiredness. The common causes for thrombocytopenia in this setting were excluded—no evidence of graft versus host disease, no signs of viral or bacterial infection, and no signs of relapsed disease/dysplastic changes. The bone marrow smear performed 12 months after transplantation revealed an unsuspected diagnosis: a massive bone marrow infiltration with amastigotes.

  4. Planning for a Bone Marrow Transplant (BMT)

    Science.gov (United States)

    ... Favorites Del.icio.us Digg Facebook Google Bookmarks Planning for a Bone Marrow Transplant (BMT) If you' ... help you find answers to financial questions: See Planning for Transplant Costs . Contact a patient services coordinator ...

  5. Bone Marrow Transplantation for Feline Mucopolysaccharidosis I

    OpenAIRE

    Ellinwood, N. Matthew; Colle, Marie-Anne; Weil, Margaret A.; Casal, Margret L.; Charles H Vite; Wiemelt, Staci; Hasson, Christopher W.; O’Malley, Thomas M.; He, Xingxuan; Prociuk, Ulana; Verot, Lucie; Melniczek, John R.; Lannon, Anne; Aguirre, Gustavo D.; Knox, Van W.

    2007-01-01

    Severe mucopolysaccharidosis type I (MPS I) is a fatal neuropathic lysosomal storage disorder with significant skeletal involvement. Treatment involves bone marrow transplantation (BMT), and although effective, is suboptimal, due to treatment sequelae and residual disease. Improved approaches will need to be tested in animal models and compared to BMT. Herein we report on bone marrow transplantation to treat feline mucopolysaccharidosis I (MPS I). Five MPS I stably engrafted kittens, transpla...

  6. Bone marrow osteoblast vulnerability to chemotherapy

    OpenAIRE

    Gencheva, Marieta; Hare, Ian; Kurian, Susan; Fortney, Jim; Piktel, Debbie; Wysolmerski, Robert; Gibson, Laura F.

    2013-01-01

    Osteoblasts are a major component of the bone marrow microenvironment which provide support for hematopoietic cell development. Functional disruption of any element of the bone marrow niche, including osteoblasts, can potentially impair hematopoiesis. We have studied the effect of two widely used drugs with different mechanisms of action, etoposide (VP16) and melphalan, on murine osteoblasts at distinct stages of maturation. VP16 and melphalan delayed maturation of preosteoblasts and altered ...

  7. Bone marrow lesions: A systematic diagnostic approach

    Directory of Open Access Journals (Sweden)

    Filippo Del Grande

    2014-01-01

    Full Text Available Bone marrow lesions on magnetic resonance (MR imaging are common and may be seen with various pathologies. The authors outline a systematic diagnostic approach with proposed categorization of various etiologies of bone marrow lesions. Utilization of typical imaging features on conventional MR imaging techniques and other problem-solving techniques, such as chemical shift imaging and diffusion-weighted imaging (DWI, to achieve accurate final diagnosis has been highlighted.

  8. In vivo cell kinetics of the bone marrow transplantation using dual colored transgenic rat system

    Science.gov (United States)

    Kai, Kotaro; Teraoka, Satoshi; Adachi, Yasushi; Ikehara, Susumu; Murakami, Takashi; Kobayashi, Eiji

    2008-02-01

    Because bone marrow is an adequate site for bone marrow stem cells, intra-bone marrow - bone marrow transplantation (IBM-BMT) is an efficient strategy for bone marrow transplantation (BMT). However, the fate of the transplanted cells remains unclear. Herein, we established a dual-colored transgenic rat system utilizing green fluorescent protein (GFP) and a luciferase (luc) marker. We then utilized this system to investigate the in vivo kinetics of transplanted bone marrow cells (BMCs) after authentic intravenous (IV)-BMT or IBM-BMT. The in vivo fate of the transplanted cells was tracked using an in vivo luminescent imaging technique; alterations in peripheral blood chimerism were also followed using flow cytometry. IBM-BMT and IV-BMT were performed using syngeneic and allogeneic rat combinations. While no difference in the proliferation pattern was observed between the two treatment groups at 7 days after BMT, different distribution patterns were clearly observed during the early phase. In the IBM-BMT-treated rats, the transplanted BMCs were engrafted immediately at the site of the injected bone marrow and expanded more rapidly than in the IV-BMT-treated rats during this phase. Graft-versus-host disease was also visualized. Our bio-imaging system using dual-colored transgenic rats is a powerful tool for performing quantitative and morphological assessments in vivo.

  9. 同种异体骨复合自体骨髓干细胞移植治疗良性骨肿瘤和瘤样病变%Allogeneic bone combined with autologous bone marrow stem cell transplantation for the treatment of benign bone tumors and tumor-like lesions

    Institute of Scientific and Technical Information of China (English)

    刘英飞; 王涛; 张平德

    2013-01-01

      背景:同种异体骨是临床常用的骨移植材料,但缺乏诱导成骨能力是最大的问题。目的:评价良性骨肿瘤及瘤样病变刮除或切除后应用同种异体骨复合自体骨髓干细胞修复骨缺损的效果。方法:65例良性骨肿瘤(包括瘤样病变)患者,根据植骨情况分为2组。复合骨髓干细胞植骨组35例患者根据预计植骨量从每位患者两侧的髂前上棘或髂后上棘抽取红骨髓20-40 mL,经体外分离、纯化、培养扩增骨髓基质干细胞备用,在植骨前将同种异体骨颗粒与骨髓基质干细胞充分混匀。肿瘤刮除或切除后,将混匀的骨髓基质干细胞与同种异体骨颗粒,植入骨缺损区内。单纯植骨组将用生理盐水浸泡半小时的同种异体骨植入骨缺损区内。分别于治疗后1,3,6,12个月进行植骨区X射线检查,比较两组病例同种异体骨颗粒界限模糊、消失的时间,同时观察术后并发症发生情况。结果与结论:62例患者均获得12个月以上随访。复合骨髓干细胞植骨组移植骨界限模糊时间和消失时间均短于单纯植骨组(P <0.05)。复合骨髓干细胞植骨组1例出现排异反应,使用免疫抑制剂治疗2周后痊愈,两组病例均未出现感染。结果表明同种异体骨复合自体骨髓干细胞植骨能明显促进骨融合和骨缺损的愈合。%BACKGROUND:Al ogenic bone is a clinical commonly used bone graft material, but the osteoinductive capacity is the biggest problem. OBJECTIVE:To evaluate the effect of al ogeneic bone combined with autologous bone marrow stem cells on the repair of bone defects after scraping or resection of benign bone tumors and tumor-like lesions. METHODS:Sixty-five cases of benign bone tumors (including patients with tumor-like lesions) were divided into two groups according to bone graft. There were 35 cases in the composite bone marrow stem cells for bone graft group, and 20-40 mL red

  10. Bone marrow dosimetry for monoclonal antibody therapy

    International Nuclear Information System (INIS)

    Immunoglobulins must permeate through the basement membrane of capillaries in order to enter the extracellular space (ECS) of tissue. Since the process is quite slow, the blood plasma activity in various organs contributes considerably to the radiation dose of the dose-limiting tissues. In bone marrow the basement membrane is absent and the blood circulation is functionally open. Therefore, blood plasma and marrow ECS maintain equal concentrations of labeled immunoglobulins. A combination of factors including intravenous administration, slow absorption into most tissues, slow breakdown and elimination of labeled immunoglobulin, and rapid entry into bone marrow ECS as well as known radiosensitivity of marrow led the authors to expect this tissue would prove to be the primary tissue at risk for systemic monoclonal antibody therapy. They have developed and applied in a Phase I clinical study of 131I labeled CEA antibody a procedure for estimation of radiation dose to red bone marrow. Serieal measurements of blood plasma and total body retention are carried out. Binding of labeled antibody to the cellular components of blood is verified to be very low. They have observed bone marrow depression at doses greater than 400 rad. If no special procedures are used to reconstitute marrow after radiation treatment, this level represents a much greater than generally recognized limitation to radiolabeled monoclonal antibody therapy. 25 references, 4 tables

  11. Haemopoiesis in murine bone marrow and spleen after fractionated irradiation and repeated bone marrow transplantation. II

    International Nuclear Information System (INIS)

    Granulopoiesis was studied in mice repeatedly exposed to doses of 3 Gy of 60Co γ-rays at 4-day intervals up to a total dose of 24 Gy on the basis of total bone marrow cellularity follow-up and analysis of myelograms and splenograms. Half the number of the mice received lO6 nuclear cells of syngeneic bone marrow after each fractional radiation dose. After an initial steep decrease, the number of granuloid cells in the spleen increased about 30-fold between days 12 and 16 of the experiment (total dose 9 and 12 Gy, respectively). This increase was temporary and between days 20 and 24 (total dose 15 and 18 Gy, respectively) a steep decrease again occurred. At a low level (below 10% of the control value) the granuloid cells remained in the spleens of bone marrow recipients until the end of the experiment (day 37, total dose 24 Gy). The behavior of the granuloid compartment of hemopoiesis thus contrasts with findings in the erythroid compartment (Hofer et al., 1989) when high numbers of erythroid nuclear cells remained in the spleens of bone marrow recipients until the end of the experiment. On the whole, the influence of repeated bone marrow transplantation on granulopoiesis in the bone marrow and spleen is positive. Of the 22 comparisons made between bone marrow recipients and mice only irradiated, 14 differences are statistically significant, always in favor of bone marrow recipients. (author)

  12. A composite demineralized bone matrix--self assembling peptide scaffold for enhancing cell and growth factor activity in bone marrow.

    Science.gov (United States)

    Hou, Tianyong; Li, Zhiqiang; Luo, Fei; Xie, Zhao; Wu, Xuehui; Xing, Junchao; Dong, Shiwu; Xu, Jianzhong

    2014-07-01

    The need for suitable bone grafts is high; however, there are limitations to all current graft sources, such as limited availability, the invasive harvest procedure, insufficient osteoinductive properties, poor biocompatibility, ethical problems, and degradation properties. The lack of osteoinductive properties is a common problem. As an allogenic bone graft, demineralized bone matrix (DBM) can overcome issues such as limited sources and comorbidities caused by invasive harvest; however, DBM is not sufficiently osteoinductive. Bone marrow has been known to magnify osteoinductive components for bone reconstruction because it contains osteogenic cells and factors. Mesenchymal stem cells (MSCs) derived from bone marrow are the gold standard for cell seeding in tissue-engineered biomaterials for bone repair, and these cells have demonstrated beneficial effects. However, the associated high cost and the complicated procedures limit the use of tissue-engineered bone constructs. To easily enrich more osteogenic cells and factors to DBM by selective cell retention technology, DBM is modified by a nanoscale self-assembling peptide (SAP) to form a composite DBM/SAP scaffold. By decreasing the pore size and increasing the charge interaction, DBM/SAP scaffolds possess a much higher enriching yield for osteogenic cells and factors compared with DBM alone scaffolds. At the same time, SAP can build a cellular microenvironment for cell adhesion, proliferation, and differentiation that promotes bone reconstruction. As a result, a suitable bone graft fabricated by DBM/SAP scaffolds and bone marrow represents a new strategy and product for bone transplantation in the clinic. PMID:24755526

  13. A composite demineralized bone matrix--self assembling peptide scaffold for enhancing cell and growth factor activity in bone marrow.

    Science.gov (United States)

    Hou, Tianyong; Li, Zhiqiang; Luo, Fei; Xie, Zhao; Wu, Xuehui; Xing, Junchao; Dong, Shiwu; Xu, Jianzhong

    2014-07-01

    The need for suitable bone grafts is high; however, there are limitations to all current graft sources, such as limited availability, the invasive harvest procedure, insufficient osteoinductive properties, poor biocompatibility, ethical problems, and degradation properties. The lack of osteoinductive properties is a common problem. As an allogenic bone graft, demineralized bone matrix (DBM) can overcome issues such as limited sources and comorbidities caused by invasive harvest; however, DBM is not sufficiently osteoinductive. Bone marrow has been known to magnify osteoinductive components for bone reconstruction because it contains osteogenic cells and factors. Mesenchymal stem cells (MSCs) derived from bone marrow are the gold standard for cell seeding in tissue-engineered biomaterials for bone repair, and these cells have demonstrated beneficial effects. However, the associated high cost and the complicated procedures limit the use of tissue-engineered bone constructs. To easily enrich more osteogenic cells and factors to DBM by selective cell retention technology, DBM is modified by a nanoscale self-assembling peptide (SAP) to form a composite DBM/SAP scaffold. By decreasing the pore size and increasing the charge interaction, DBM/SAP scaffolds possess a much higher enriching yield for osteogenic cells and factors compared with DBM alone scaffolds. At the same time, SAP can build a cellular microenvironment for cell adhesion, proliferation, and differentiation that promotes bone reconstruction. As a result, a suitable bone graft fabricated by DBM/SAP scaffolds and bone marrow represents a new strategy and product for bone transplantation in the clinic.

  14. Homing of bone marrow lymphoid cells

    International Nuclear Information System (INIS)

    DNA labeling, bone marrow fractionation, and radioautography were used to follow the fate of transfused, newly formed marrow lymphocytes in irradiated hosts. After infusing donor Hartley guinea pigs with 3H-thymidine for 3 to 5 days, high concentrations of labeled small lymphocytes and large lymphoid cells were separated from marrow by sedimentation in sucrose-serum gradients and injected into lethally x-irradiated syngeneic recipients. Most labeled small lymphocytes and large lymphoid cells rapidly left the circulation. They appeared to be mainly in the marrow and spleen, increasing in incidence from 1 to 3 days, but declining in mean grain count. Labeled cells were scattered throughout the recipient marrow; in the spleen they localized initially in the red pulp, and subsequently in peripheral areas of white pulp, often in clusters. Labeled small lymphocytes showed a delayed migration into the mesenteric lymph node, mainly in the superficial cortex and medulla; they also appeared in small numbers in Peyer's patches, but rarely in the thymus or thoracic duct lymph. It is concluded that a rapid selective homing of newly formed marrow lymphoid cells occurs in both the marrow and certain areas of the spleen of irradiated hosts, followed by a continuing proliferation of large lymphoid cells and production of small lymphocytes. The results are discussed with respect to the life history of marrow lymphocytes and the use of adoptive immune assays of marrow cells to characterize B lymphocyte maturation

  15. Hypercalcemia and altered biochemical bone markers in post-bone marrow transplantation osteopetrosis: a case report and literature review.

    Science.gov (United States)

    Kulpiya, Alisa; Mahachoklertwattana, Pat; Pakakasama, Samart; Hongeng, Suradej; Poomthavorn, Preamrudee

    2012-08-01

    Autosomal recessive osteopetrosis is a rare disorder of bone resorption defect that results in generalized sclerotic bones and bone marrow failure. Allogeneic BMT is the only treatment for cure. One of the complications following a successful BMT is hypercalcemia that is a unique complication in this group of patients. We report a three-yr-old boy with osteopetrosis who developed hypercalcemia following the successful BMT. His maximal calcium level was 13.3 mg/dL. Markedly increased both bone formation and resorption markers were demonstrated along with hypercalcemia. These findings indicated an active donor-derived osteoclastic function and thus bone resorption following the successful donor engraftment in the patient. Treatment with hyperhydration, furosemide and bone resorption inhibitors, calcitonin, and bisphosphonate led to normalization of the serum calcium level. Bone resorption but not bone formation marker was persistently elevated despite having normocalcemia during a 16.5-month follow-up period. PMID:21323826

  16. IL-22 promoted CD3+ T cell infiltration by IL-22R induced STAT3 phosphorylation in murine acute graft versus host disease target organs after allogeneic bone marrow transplantation.

    Science.gov (United States)

    Zhao, Kai; Ruan, Suhong; Tian, Yu; Zhao, Dongmei; Chen, Chong; Pan, Bin; Yan, Zhiling; Yin, Lingling; Zhu, Shengyun; Xu, Kailin

    2016-10-01

    Graft versus host disease (GVHD) is a life threatening complication of bone marrow stem cell transplantation, in which considerable numbers of proinflammatory cytokines secreted by allo-reactive donor T cells are involved. We and other previous studies have found that interleukin-22 (IL-22) was able to aggravate the target organs damage of GVHD. However, the mechanism and the signal pathway of IL-22 in murine acute GVHD was not clear. Here, we observed that compared with GVHD group, more serious pathological damage and more CD3(+) T cells infiltrated in GVHD target organs were detected in the mice injected with IL-22. Meanwhile, transcription factor T-bet, RORγt and AhR respectively associated with Th1, Th17 and Th22 cells changed in varying degrees in different GVHD target organs. Furthermore, the increased expression of IL-22R and its downstream protein P-STAT3 were detected in GVHD mice with IL-22 treated. These results suggested that the pathological role of IL-22 in GVHD target organs contribute to exogenous injected IL-22 as well as secreted IL-22 from the infiltrated allo-reactive effector T cells. In addition, the IL-22R-STAT3 pathway may play important role in GVHD tissue injury and target this way may yield new approaches for reduction of GVHD. PMID:27551984

  17. Impact of bone marrow on respiratory disease.

    Science.gov (United States)

    Rankin, Sara M

    2008-06-01

    The bone marrow is not only a site of haematopoiesis but also serves as an important reservoir for mature granulocytes and stem cells, including haematopoietic stem cells, mesenchymal stem cells and fibrocytes. In respiratory diseases, such as asthma and idiopathic pulmonary fibrosis these cells are mobilised from the bone marrow in response to blood-borne mediators and subsequently recruited to the lungs. Although the granulocytes contribute to the inflammatory reaction, stem cells may promote tissue repair or remodelling. Understanding the factors and molecular mechanisms that regulate the mobilisation of granulocytes and stem cells from the bone marrow may lead to the identification of novel therapeutic targets for the treatment of a wide range of respiratory disorders. PMID:18372214

  18. Syringomyelia in mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): imaging findings following bone marrow transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Hite, S.H. [Department of Radiology, Box 292, University of Minnesota Hospital and Clinic, 420 Delaware Street SE, Minneapolis, MN 55455 (United States); Krivit, W. [Department of Pediatrics and Institute for Human Genetics, University of Minnesota Hospital and Clinic, Minneapolis, MN (United States); Haines, S.J. [Department of Neurological Surgery, University of Minnesota Hospital and Clinic, Minneapolis, MN (United States); Whitley, C.B. [Department of Pediatrics and Institute for Human Genetics, University of Minnesota Hospital and Clinic, Minneapolis, MN (United States)

    1997-09-01

    We present the imaging findings in a patient with mucopolysaccharidosis (MPS) type VI (Maroteaux-Lamy syndrome) who developed holocord syringomyelia. This represents the only reported case of syrinx formation in a child with MPS VI. Clinical, neurologic and spinal magnetic resonance imaging findings are presented. The patient has maintained a stable clinical and neurologic course over the period following allogeneic bone marrow transplant. (orig.). With 3 figs.

  19. Syringomyelia in mucopolysaccharidosis type VI (Maroteaux-Lamy syndrome): imaging findings following bone marrow transplantation

    International Nuclear Information System (INIS)

    We present the imaging findings in a patient with mucopolysaccharidosis (MPS) type VI (Maroteaux-Lamy syndrome) who developed holocord syringomyelia. This represents the only reported case of syrinx formation in a child with MPS VI. Clinical, neurologic and spinal magnetic resonance imaging findings are presented. The patient has maintained a stable clinical and neurologic course over the period following allogeneic bone marrow transplant. (orig.). With 3 figs

  20. A survey of recommendations given to patients going home after bone marrow transplant.

    OpenAIRE

    Brandt, L.; Broadbent, V.

    1994-01-01

    A postal questionnaire was sent to 11 UK Children's Cancer Study Group bone marrow transplant centres asking them for details of their instructions to patients on discharge after either allogeneic or auto transplant; nine centres responded. There was no recommendation on which they all agreed. Though all centres gave prophylactic septrin, the times of starting and stopping treatment varied considerably. Three centres recommended lifelong penicillin after total body irradiation, one treated fo...

  1. Prevention and treatment of fungal infections in bone marrow transplantation.

    Science.gov (United States)

    Mossad, Sherif B

    2003-07-01

    There has not been as much success in the prevention and treatment of invasive fungal infections, particularly aspergillosis, compared to the prevention and treatment of cytomegalovirus infection and graft-versus-host disease in bone marrow transplant (BMT) recipients. Allogeneic BMT recipients who develop graft-versus-host disease and remain immunosuppressed for long periods are at major risk for development of these infections. Prevention of environmental exposure, antifungal chemoprophylaxis, and attempts at early diagnosis are essential for the reduction of mortality from invasive fungal infections. Chest computerized axial tomography is extremely useful in diagnosing pulmonary aspergillosis. However, microbiologic or histologic identification of infection remains essential. Unfortunately, the response to therapy in BMT recipients remains suboptimal. With the development of the lipid formulations of amphotericin B, the newer azoles, and the echinocandins, safer and more efficacious options have become available. The optimal use of antifungal agents or their combinations remains to be determined. PMID:12901327

  2. Cystoid macular edema after bone marrow transplantation

    OpenAIRE

    Khetan Vikas; Chaudhary S; Gopal Lingam

    2009-01-01

    We report a case of cystoid macular edema in a patient who underwent bone marrow transplant for aplastic anemia. After having ruled out all the other causes of cystoid macular edema, we concluded that it was secondary to the bone marrow transplant. The patient had mild visual impairment and did not recover the lost vision. In this case report, we describe in detail the clinical presentation, follow-up, and course of medication that this patient had. It is an illustrated case report of cystoid...

  3. Understanding Bone Marrow Transplantation as a Treatment Option

    Science.gov (United States)

    ... Talking with Your Doctor Diseases Treatable with a Bone Marrow Transplant or Cord Blood Transplant Diseases that may be treated with a bone marrow or cord blood transplant include: Leukemias and lymphomas ...

  4. A Survey of Bacterial Infections in Bone Marrow Transplant Recipients

    OpenAIRE

    Shirazi MH; R Ranjbar; A. Ghasemi; S Paktarigh; N Sadeghifard; Pourmand MR

    2007-01-01

    "nBackground: Bone marrow transplant (BMT) recipients are prone to bacterial, viral and fungal infections. Bacterial infec­tion is considered as one of the common and serious complications in bone marrow transplant recipients. The aim of this study was to determine the rate of bacterial infections in bone marrow transplant recipients."nMethods: Fifty-two blood and 25 catheter samples were obtained from 23 patients who were hospitalized in bone marrow trans­plantation...

  5. Enrichment for CFU-C from murine and human bone marrow using soybean agglutinin

    International Nuclear Information System (INIS)

    Mouse bone marrow and spleen cells agglutinated by soybean agglutinin (SBA) or peanut agglutinin (PNA) were previously shown to be enriched for spleen colony-forming cells (CFU-S) and sufficiently depleted of graft-versus-host reaction producing cells to allow hematologic reconstitution of lethally irradiated allogeneic recipient mice. A similar enrichment for cells capable of forming colonies in soft agar culture (CFU-C) has now been found in the SBA-agglutinated fraction of mouse bone marrow cells, in contrast to the finding that in human bone marrow the majority of the CFU-C are in the fraction not agglutinated by SBA. Cytofluorometric studies with fluorescein-labeled SBA (FITC-SBA) revealed that the majority of both mouse and human bone marrow cells bind the lectin. Experiments mixing the human marrow fractions separated by SBA reveal that true enrichment for CFU-C is achieved in the unagglutinated fraction, as opposed to a possible depletion of a suppressor cell population. Granulocytic, monocytic, and mixed cell colonies were all enriched in the SBA-unagglutinated cell fraction from human bone marrow

  6. Engraftment of bone marrow-derived cells after nonlethal radiation in syngeneic C57BL/6mice%Engraftment of bone marrow-derived cells after nonlethal radiation in syngeneic C57BL/6 mice

    Institute of Scientific and Technical Information of China (English)

    Wu Liao; Tan Li; Wang Yu; Liu Dengqun; Shi Chunmeng

    2015-01-01

    Objective To study the characteristics of cell engraftment in mice at a lower dose under nonlethal radiated condition.Methods A syngeneic C57BL/6 mouse model,transplanted with 1 × 107 bone marrow cells and exposed to 2.5 Gy whole body irradiation (WBI),was selected to study the chimerism of cells from green fluorescent protein positive (GFP +) transgenic mice.The control group was injected with GFP + cells without receiving irradiation.In addition,an allogenic transplantation model of BALB/c mice was also investigated which was infused by GFP + cells from C57BL/6 mice.The engraftment of bone marrow-derived cells (BMDCs) was detected by immunohistochemistry in bone marrow,liver,lung,small intestine and spleen.Results The transplanted bone marrow cells successfully grafted in the haematopoietic tissues from syngeneic GFP transgenic mice.The transplanted GFP+ cells were also detected in the non-haematopoietic tissues,such as the small intestine,liver,spleen and lung,after irradiation.However,a lethal dose irradiation of 8 Gy was required to establish successful chimerism in allogeneic transplantation model by infusing the bone marrow cells from C57BL/6 mice to BALB/c mice.Conclusions Bone marrow-derived cells can be successfully grafted into various recipient tissues receiving a 2.5 Gy dose of radiation in syngeneic mice,but not in allogeneic mice.This nonlethal model may help to further study the plasticity and mechanism of bone marrow-derived cells in tissue repair and regeneration after radiation injury.

  7. Regenerate augmentation with bone marrow concentrate after traumatic bone loss

    OpenAIRE

    Jan Gessmann; Manfred Köller; Holger Godry; Thomas Armin Schildhauer; Dominik Seybold

    2012-01-01

    Distraction osteogenesis after post-traumatic segmental bone loss of the tibia is a complex and time-consuming procedure that is often complicated due to prolonged consolidation or complete insufficiency of the regenerate. The aim of this feasibility study was to investigate the potential of bone marrow aspiration concentrate (BMAC) for percutaneous regenerate augmentation to accelerate bony consolidation of the regenerate. Eight patients (age 22-64) with an average posttraumatic bone defect ...

  8. Bone Marrow-Derived Macrophages (BMM)

    DEFF Research Database (Denmark)

    Weischenfeldt, Joachim; Porse, Bo

    2008-01-01

    of committed myeloid progenitors into cells of the macrophage/monocyte lineage. Mice lacking functional M-CSF are deficient in macrophages and osteoclasts and suffer from osteopetrosis. In this protocol, bone marrow cells are grown in culture dishes in the presence of M-CSF, which is secreted by L929 cells...

  9. [Pulmonary arterial hypertension, bone marrow, endothelial cell precursors and serotonin].

    Science.gov (United States)

    Ayme-Dietrich, Estelle; Banas, Sophie M; Monassier, Laurent; Maroteaux, Luc

    2016-01-01

    Serotonin and bone-marrow-derived stem cells participate together in triggering pulmonary hypertension. Our work has shown that the absence of 5-HT2B receptors generates permanent changes in the composition of the blood and bone-marrow in the myeloid lineages, particularly in endothelial cell progenitors. The initial functions of 5-HT2B receptors in pulmonary arterial hypertension (PAH) are restricted to bone-marrow cells. They contribute to the differentiation/proliferation/mobilization of endothelial progenitor cells from the bone-marrow. Those bone-marrow-derived cells have a critical role in the development of pulmonary hypertension and pulmonary vascular remodeling. These data indicate that bone-marrow derived endothelial progenitors play a key role in the pathogenesis of PAH and suggest that interactions involving serotonin and bone morphogenic protein type 2 receptor (BMPR2) could take place at the level of the bone-marrow. PMID:27687599

  10. Effects of Ligustrazine on Expression of Bone Marrow Heparan Sulfates in Syngeneic Bone Marrow Transplantation Mice

    Institute of Scientific and Technical Information of China (English)

    任天华; 刘文励; 孙汉英; 戴琪琳; 孙岚

    2003-01-01

    To explore the effects of ligustrazine on bone marrow heparan sulfates (HS) expression in bone marrow transplantation (BMT) mice, the syngeneic BMT mice were orally given 2 mg ligustrazine twice a day. On the 7th, 10th, 14th, 18th day after BMT, peripheral blood cells and bone marrow nuclear cells (BMNC) were counted, and the expression levels of HS in bone marrow and on the stromal cell surfaces were detected by immunohistochemistry and flow cytometry assay respectively. In ligustrazine-treated group, the white blood cells (WBC) and BMNC on the 7th, 10th, 14th, 18th day and platelets (PLT) on the 7th, 10th day were all significantly more than those in control group (P<0.05). The bone marrow HS expression levels in ligustrazine-treated group were higher than those in control group (P<0. 05) on the 7th, 10th, 14th, 18th day. However, the HS expression levels on the stromal cell surfaces showed no significant difference between the two groups on the 18th day (P>0. 05). It was concluded that ligustrazine could up-regulate HS expression in bone marrow, which might be one of the mechanisms contributing to ligustrazine promoting hematopoietic reconstitution after BMT.

  11. Bone marrow: its contribution to heme catabolism.

    Science.gov (United States)

    Mähönen, Y; Anttinen, M; Vuopio, P; Tenhunen, R

    1976-01-01

    Heme oxygenase (HO) and biliverdin reductase (BR), the two NADPH-dependent enzymes involved in the degradation of hemoglobin and its derivatives, were measured in bone marrow aspirates from 5 hematologically normal persons, 4 patients with chronic leucemia (CL), 11 patients with acute leucemia (AL), 8 patients with refractory sideroblastic anemia (RA), 7 patients with iron-deficiency anemia (IA), 5 patients with hemolytic anemia (HA), and 7 patients with secondary anemia (SA) to determine the enzymatic capacity of the bone marrow in different hematologic disorders for heme catabolism. HO activity in the bone marrow of normal persons was 0.42 +/- 0.28 (SD) nmoles bilirubin/10 mg protein/min; in CL, 2.15 +/- 1.34; in AL, 0.39 +/- 0.25; in RA, 0.58 +/- 0.37; in IA, 0.41 +/- 0.28; in HA, 2.56 +/- 1.40; and in SA, 1.72 +/- 1.06. BR activity, respectively, was in normal persons 8.7 +/- 2.4 (SD) nmoles bilirubin/10 mg protein/min; in CL, 13.6 +/- 9.1; in AL, 3.8 +/- 3.1 in RA, 5.1 +/- 2.7; in IA, 5.5 +/- 3.7; in HA, 17.0 +/- 7.2; and in SA, 10.5 +/- 4.2. On the basis of these findings it seems evident that both oxygenase and biliverdin reductase activities of the bone marrow are capable of adaptive regulation. The physiologic role of bone marrow in heme catabolism seems to be of significant importance.

  12. [Bone marrow involvement and eosinophilia in paracoccidioidomycosis].

    Science.gov (United States)

    Shikanai-Yasuda, M A; Higaki, Y; Uip, D E; Mori, N S; Del Negro, G; Melo, N T; Hutzler, R U; Amato Neto, V

    1992-01-01

    The authors described three acute paracoccidioidomycosis patients with bone marrow involvement. P. brasiliensis yeast forms were observed in bone marrow smears of all them, and in one case, culture also revealed fungus growth. The mononuclear phagocytic system involvement, the blood eosinophilia and the negative skin hypersensibility responses were emphasized in all of them, as well as the severity of the disease in one case, with disseminated bone lesions and 20.260 eosinophils/mm3 in peripheral blood. The authors discuss the possible role of eosinophil in the host-parasite interaction in paracoccidioidomycosis, suggesting that TH 2 subpopulation activation and increased IL 5 and GM-CSF secretions may be responsible by eosinophilia in the most severe case. PMID:1340036

  13. Bone marrow micrometastasis detected by flow cytometry is associated bone, bone marrow, lung macrometastasis in breast cancer

    Directory of Open Access Journals (Sweden)

    Mustafa Salih Akin

    2014-04-01

    Material and Methods: Bone marrow samples were obtained from 52 breast cancer patients and 16 control patients via aspiration from the iliac spine at the time of first diagnosis after the surgery. Epithelial cells were identified with anti-cytokeratin monoclonal antibody, and double-staining with propidium iodide and CD45using flow cytometry. Results: In all, 2 (12.5% of the 16 control patients and 11 (21% of the 52 breast cancer patients had cytokeratin-18 positive cells in their bone marrow. A relationship between the presence of occult metastatic cells in bone marrow, and the presence/absence of lymph node metastases, tumor size, stage, menopausal status, hormone receptor status, histological grade, c-erb-B2 expression, tumor subtype, lymphovascular invasion, Ductal carcinoma in situ (DCIS component, and gender was not observed. Significant positive relationships were observed between bone marrow micrometastasis, and age, and bone, bone marrow, lung, and liver metastases. Conclusion: Bone marrow micrometastasis was associated with age, bone, bone marrow, lung, and liver metastases at the time of diagnosis.. [Cukurova Med J 2014; 39(2.000: 305-314

  14. Bone marrow scintigraphy in hemopoietic depletion states

    International Nuclear Information System (INIS)

    Bone marrow scintigraphy was performed in 29 patients with hemopoietic depletion states of various etiology. Two tracers were used for visualization, viz., sup(99m)Tc-sulfur-colloid and 111InCl3;some patients were examined using both indicators. 111InCl3 is bound to transferrin and is adsorbed on the surface of reticulocytes and erythroblasts. A scintillation camera PHO GAMMA SEARLE IV fitted with a moving table and computer CLINCOM were used to obtain whole-body images. The comparison of all scans and marrow puncture smears was done. In patients with aplastic anemia with both hyperplastic or hypoplastic marrow good correlation of bone marrow scans and sternal puncture smears was found. In several cases the scintigraphic examination helped to establish the diagnosis of marrow depletion. A peculiar disadvantage of the imaging method with either sup(99m)Tc-sulfur-colloid or 111InCl3 is that it shows the disorders in erythropoietic and reticuloendothelial cells whereas the defects in myelopoietic cell series and platelet precursors are not provable. According to literature data, great attention is paid to the prognostic value of scintigraphic examination in aplastic anemia. (author)

  15. Scanning of Bone Marrow in Haematopoietic Disorders

    International Nuclear Information System (INIS)

    Scanning can help evaluate size and distribution of the haematopoietic marrow, a difficult task by aspiration or biopsy. With the 61-hole focusing gold-tungsten Oak Ridge National Laboratory Scanner, the marrow organ has been clearly delineated by means of intravenous colloidal Au198, it being known that reticulo-endothelial function in the marrow correlates with areas of haematopoiesis. Patients with normal haematopoiesis and with a variety of blood disorders such as focal marrow lesions, acute and chronic leukaemia, polycythaemiavera, myelofibrosis, multiple myeloma, and lymphoma have been scanned. Because of the reticulo-endothelial activity in liver and spleen, the marrow pattern is obscured in the mid-trunk. Vertebral bodies, intervertebral discs, pelvis and long bones are outlined, and, in the thorax, the sternum and thoracic vertebrae. Focal lesions have also been found. Because of respiratory motion, individual ribs are not seen. In expanded marrow, the knee region can be shown, including the joint space. It has been possible to correlate these scans with aspiration biopsy and with linear scans. Because relatively large doses of Au198 are required, other isotopes are being investigated. An improved whole- body scanner is being tested for more practical scans. (author)

  16. Karyotype of cryopreserved bone marrow cells

    Directory of Open Access Journals (Sweden)

    M.L.L.F. Chauffaille

    2003-07-01

    Full Text Available The analysis of chromosomal abnormalities is important for the study of hematological neoplastic disorders since it facilitates classification of the disease. The ability to perform chromosome analysis of cryopreserved malignant marrow or peripheral blast cells is important for retrospective studies. In the present study, we compared the karyotype of fresh bone marrow cells (20 metaphases to that of cells stored with a simplified cryopreservation method, evaluated the effect of the use of granulocyte-macrophage colony-stimulating factor (GM-CSF as an in vitro mitotic index stimulator, and compared the cell viability and chromosome morphology of fresh and cryopreserved cells whenever possible (sufficient metaphases for analysis. Twenty-five bone marrow samples from 24 patients with hematological disorders such as acute myeloid leukemia, acute lymphoblastic leukemia, myelodysplastic syndrome, chronic myeloid leukemia, megaloblastic anemia and lymphoma (8, 3, 3, 8, 1, and 1 patients, respectively were selected at diagnosis, at relapse or during routine follow-up and one sample was obtained from a bone marrow donor after informed consent. Average cell viability before and after freezing was 98.8 and 78.5%, respectively (P < 0.05. Cytogenetic analysis was successful in 76% of fresh cell cultures, as opposed to 52% of cryopreserved samples (P < 0.05. GM-CSF had no proliferative effect before or after freezing. The morphological aspects of the chromosomes in fresh and cryopreserved cells were subjectively the same. The present study shows that cytogenetic analysis of cryopreserved bone marrow cells can be a reliable alternative when fresh cell analysis cannot be done, notwithstanding the reduced viability and lower percent of successful analysis that are associated with freezing.

  17. Immunosuppressive effects and mechanism of rat bone marrow mesenchymal stem cells on allogeneic T lymphocytes%大鼠骨髓间充质干细胞和免疫调节作用

    Institute of Scientific and Technical Information of China (English)

    高峰; 林雨佳; 李国良; 吴德全

    2011-01-01

    目的 研究一氧化氮(nitric oxide,NO)在骨髓间充质干细胞(mesenchymal stem cells,MSCs)的免疫调节作用.方法 贴壁筛选法分离培养Lewis大鼠骨髓间充质干细胞.以刀豆蛋白A(concanavalin A,ConA)作为刺激因素,SD大鼠外周血分离的T淋巴细胞作为反应细胞,采用CCK-8法检测T淋巴细胞与MSCs共培养后其增殖能力的变化.然后采用RT-PCR、Western blot检测MSCs诱导型一氧化氮合酶(inducible nitric oxide synthase,iNOS)mRNA与蛋白的表达;Griess法检测上清液亚硝酸盐含量;ELISA检测上清液Th1细胞因子IFN-γ和Th2细胞因子IL-4的水平.结果 MSCs明显抑制ConA诱导的T淋巴细胞增殖,抑制作用因细胞比例的不同而有所区别.当实验组MSC:T为1:10时最明显,增殖率为(33.83±2.10)%,而1:80组[(78.62±3.80)%]与不含MSCs的阳性对照组[(79.03±1.70)%]差异无统计学意义(P>0.05).实验组MSCs的iNOS mRNA与蛋白的表达以及上清液中亚硝酸盐含量均较阳性对照组明显上调,1:10~1:40的范围内呈明显递增趋势,但1:80组与1:40组差异无统计学意义(P>0.05).在加入iNOS特异性抑制剂2-甲基-2-巯基硫酸脲(S-methylisothiourea sulfate,SMT)后,各组T淋巴细胞增殖率基本恢复.实验组IFN-γ含量随MSCs所占比例的降低而增加,各组IL-4含最差异无统计学意义(P>0.05).结论 MSCs对同种异体外周血T淋巴细胞的增殖有免疫调节作用,机制可能与其分泌的可溶性因子NO影响了 Th1/Th2平衡有关.%Objective To observe the role of nitric oxide(NO) in the immune regulatory effect of bone marrow mesenchymal stem cells(MSCs). Methods Bone marrow MSCs were isolated from Lewis rats by adherence screening. Concanavalin A (ConA) was adopted as the stimulator and T-lymphocyte isolated from peripheral blood of SD rats as the reactive cells. The changes of the ability of T-lymphocyte proliferation, when co-cultured with MSCs, were measured by CCK-8 assay. The inducible nitric

  18. Total-body irradiation and host reconstitution with stored autologous marrow: an experimental model for the induction of allogeneic unresponsiveness in large mammals. [Dogs

    Energy Technology Data Exchange (ETDEWEB)

    Rapaport, F.T.; Bachvaroff, R.J.; Dicke, K.; Santos, G.

    1979-03-01

    These results point to the capacity of suprelethal total-body irradiation and autologous bone marrow replacement to produce in the host a time-dependent privileged phase of immunologic reactivity during which exposure to alloantigens is more likely to produce unresponsiveness, rather than sensitization. The mechanisms implicated in the mediation of this phenomenon are not clear. Regardless of hypothetical interpretations, however, the current growing interest in total-body irradiation and autologous bone marrow replacement in clinical medicine, and the ease with which this approach appears to produce allogenic unresponsiveness in large mammals, raise the possibility that this method may constitute a highly promising approach to the facilitation of survival of vital transplanted organs in man. This possibility is further supported by the long-term record of the world's longest surviving renal allograft recipient, whose preoperative preparation consisted of total-body irradiation 24 hr before a kidney transplant.

  19. Regression of Adjuvant-Induced Arthritis in Rats Following Bone Marrow Transplantation

    Science.gov (United States)

    van Bekkum, Dirk W.; Bohre, Els P. M.; Houben, Paul F. J.; Knaan-Shanzer, Shoshan

    1989-12-01

    Total body irradiation followed by bone marrow transplantation was found to be an effective treatment for adjuvant arthritis induced in rats. This treatment is most effective when applied shortly after the clinical manifestation of arthritis--i.e., 4-7 weeks after administration of Mycobacterium tuberculosis. Transplantation of bone marrow at a later stage results in a limited recovery, in that the inflammatory reaction regresses but the newly formed excessive bone is not eliminated. Local irradiation of the affected joints had no effect on the disease. It could also be excluded that the recovery of arthritis following marrow transplantation is due to lack of available antigen. Transplantation of syngeneic bone marrow is as effective as that of allogeneic bone marrow from a rat strain that is not susceptible to induction of adjuvant arthritis. The beneficial effect of this treatment cannot be ascribed to the immunosuppressive effect of total body irradiation, since treatment with the highly immunosuppressive drug Cyclosporin A resulted in a regression of the joint swelling but relapse occurred shortly after discontinuation of the treatment.

  20. Improved method for assessing iron stores in the bone marrow

    NARCIS (Netherlands)

    K.S. Phiri; J.C.J. Calis; D. Kachala; E. Borgstein; J. Waluza; I. Bates; B. Brabin; M. Boele van Hensbroek

    2009-01-01

    BACKGROUND: Bone marrow iron microscopy has been the "gold standard" method of assessing iron deficiency. However, the commonly used method of grading marrow iron remains highly subjective. AIM: To improve the bone marrow grading method by developing a detailed protocol that assesses iron in fragmen

  1. Bone marrow transplantation for childhood malignancies

    Energy Technology Data Exchange (ETDEWEB)

    Toyoda, Yasunori (Kanagawa Children' s Medical Center, Yokohama (Japan))

    1992-10-01

    As of June 30, 1991, 1013 pediatric patients had registrated to The Bone Marrow Transplantation Committee of the Japanese Society of Pediatric Hematology. Bone marrow transplantation (BMT) from HLA-matched siblings is now reasonably safe and an established method of treatment in acute leukemia. Total body irradiation, which is major part of preparative regimen for BMT, affect endocrine function, subsequent growth, gonadal function, development of secondary malignancies. We propose the indication of TBI for children and young adults as follows; those who are at high risk for leukemic relapse after BMT such as Phl-positive-All, leukemia-lymphoma syndrome, AML with monocytic component, BMT in elapse, BMT from other than HLA-matched siblings. (author).

  2. Recent advances in bone marrow biopsy pathology

    OpenAIRE

    van der Walt, Jon

    2009-01-01

    The second quarter of 2009 saw steady advances in bone marrow biopsy (BMB) pathology. The following publications are a personal selection of the highlights. Quality issues in diagnostic immunohistochemistry for BMB have largely been ignored in external quality assurance programmes, and this issue is highlighted. In other areas, publications reflecting advances in flow cytometry and aspirate morphology are discussed where translation to the BMB is possible. Classifications undergo constant cha...

  3. Acceleration of Immune Reconstitution after Bone Marrow Transplantation in Mice by Bone Marrow Stromal

    Institute of Scientific and Technical Information of China (English)

    秦凤华; 蒋激扬; 李爱玲; 金永柱; 郝洁; 谢蜀生

    2003-01-01

    To observe potential effect of the engineered bone marrow stromal cell line QXMSC1 secreting IL-6 (QXMSCIL-6) on accelerating immnune reconstitution in syngeneic bone marrow transplantation in mice, QXMSC1 was transfected with the eukaryocytic expression vector pcDNAIL-6, which contained hIL-6 cDNA by liposome-mediated gene transfecting technique. G418-resistance clone was selected by limiting dilution. The highest secreting clone was selected by ELISA assay and used in animal experiments. The recipient mice (BALB/c) were lethally irradiated and cotransplanted syngeneic bone marrow (107/mice) and the QXMSCIIL-6 (5×105/mice). Lymphocyte proliferation induced by ConA and LPS, helper T lymphocyte precursor (HTLp), cytotoxic T lymphocyte precursor (CTLp), plaque-forming cell (PFC), delayed type hypersensitivity (DTH) were examined 30, 60 days in post transplantation respectively. The results showed that lymphocytes proliferation to ConA and LPS, HTLp, CTLp increased, DTH and PFC were improved by cografted stromal cells QXMSCIIL-6 on 30, 60 days after BMT. These results demonstrated that the bone marrow stromal cell line QXMSC1 IL-6 transfected with IL-6 (QXMSC11L-6) accelerated immnune reconstitution in syngeneic bone marrow transplantation.

  4. Methods of bone marrow dose calculation

    International Nuclear Information System (INIS)

    Several methods of bone marrow dose calculation for photon irradiation were analised. After a critical analysis, the author proposes the adoption, by the Instituto de Radioprotecao e Dosimetria/CNEN, of Rosenstein's method for dose calculations in Radiodiagnostic examinations and Kramer's method in case of occupational irradiation. It was verified by Eckerman and Simpson that for monoenergetic gamma emitters uniformly distributed within the bone mineral of the skeleton the dose in the bone surface can be several times higher than dose in skeleton. In this way, is also proposed the Calculation of tissue-air ratios for bone surfaces in some irradiation geometries and photon energies to be included in the Rosenstein's method for organ dose calculation in Radiodiagnostic examinations. (Author)

  5. Psychiatric disorders in bone marrow transplant patients

    International Nuclear Information System (INIS)

    To identify the psychiatric illnesses in patients with hematological/oncological disorders encountered during blood and bone marrow transplantation. All consecutive patients, aged 15 years and above, who fulfilled inclusion and exclusion criteria and underwent blood and bone marrow transplantation, were enrolled in this study. Psychiatric assessment comprised of a semi-structured interview based on Present Status Examination (PSE). The psychiatric diagnosis was made on the basis of International Classification of Diseases (ICD-10) system of classification devised by W.H.O. Eighty patients, who fulfilled the inclusion criteria, were inducted in this study. Thirty (37.5%) cases were found to have psychiatric disorders. Out of the total, 60 (75%) were males and 20 (25%) females. Adjustment disorder was the most frequent diagnosis (n=12), followed by major depression (n=7). Rest of the diagnoses made were generalized anxiety disorder, acute psychotic disorder, delirium and depressive psychosis. High psychiatric morbidity associated with blood and bone marrow transplantation was observed. It indicates the importance of psychiatric intervention during the isolation period of BMT as well as pre-transplant psychiatric assessment and counseling regarding procedure. (author)

  6. Radionuclide imaging of bone marrow in hematologic systemic disease

    Energy Technology Data Exchange (ETDEWEB)

    Kessel, F.; Hahn, K.; Gamm, H.

    1987-02-01

    Radionuclide imaging studies of the bone marrow were carried out in 164 patients suffering from hematologic systemic disease. One third of 90 patients with Hodgkin lymphoma (HL) or Non Hodgkin lymphoma (NHL) displayed a pathological distribution pattern representing bone marrow expansion. In HL there were 17% accumulation defects caused by metastases in contrast to only 7% in NHL. Among 30 patients with chronic myelocytic leukemia bone marrow expansion was found in 60%, bone marrow displacement and aplasia 10%. Focal bone marrow defects were found in 3 patients. All patients with primary polycythemia rubra vera displayed a pathologic bone marrow distribution pattern as well as splenomegaly. All patients with acute myelocytic leukemia (AML) and one patient with an acute lymphatic leukemia (ALL) had a pathological distribution pattern with bone marrow expansion and displacement. Focal bone marrow defects were not seen. Multiple myeloma with bone marrow expansion was found in 6 of 12 patients and focal accumulation defects were found in 40%, the latter lesions being not visible or equivocal on skeletal imaging studies. Pathological changes in liver and spleen were found in a high percentage of the total collective. The results document the important clinical value of bone marrow scintigraphy among the hematologic diseases studied.

  7. 眼球后静脉注射建立小鼠非清髓同种异基因骨髓细胞移植模型%Establishment of non-myeloablative allogeneic bone marrow transplantation model in mice via retro-orbital injection

    Institute of Scientific and Technical Information of China (English)

    于力方; 刘乔飞; 贾艳娥

    2012-01-01

    目的:验证利用眼球后静脉注射( retro-orbital injection,ROI)建立小鼠非清髓同种异基因骨髓细胞移植(Non-allogeneic myeloablative bone marrow cell transplantation,N-Allo-BMT)模型的可行性和安全性,寻找替代尾静脉注射(tail vein injection,TVI)进行小鼠细胞移植的理想途径.方法:对比10名志愿者从练习到掌握ROI与TVI所需时间;经ROI建立N-Allo-BMT模型,利用外周血瑞氏染色及流式细胞计数,连续观测外周血像及嵌合情况,观察移植物抗宿主疾病(GVHD)发生情况.结果:所有志愿者均在1~3h内能熟练完成ROI,且无注射相关并发症发生;在移植10d后,受体小鼠完全恢复造血,外周血呈供体完全嵌合;在移植75d内,83.3%的受体死于严重GVHD.讨论:ROI是一种简便、安全、可靠的小鼠骨髓细胞移植方法,可代替操作难度较大的TVI,值得推广.

  8. Haploidentical Bone Marrow Transplantation With Clofarabine and Busulfan Conditioning for a Child With Multiple Recurrent Acute Lymphoblastic Leukemia.

    Science.gov (United States)

    Aoki, Yuki; Miyawaki, Reiji; Imai, Kohsuke; Takagi, Masatoshi; Kajiwara, Michiko; Ishiwata, Yasuyoshi; Yasuhara, Masato; Morio, Tomohiro; Mizutani, Shuki; Tomizawa, Daisuke

    2016-01-01

    Outcome of children with acute lymphoblastic leukemia (ALL) has improved over the years, but not for those with multiple recurrences because of high therapy resistance and heavily pretreated history that potentially cause physical damages. We describe the case of an 11-year-old boy with a third relapse of ALL and a history of 2 allogeneic bone marrow transplantations. He was successfully treated with clofarabine combination chemotherapy and achieved a fourth remission at 16 months following haploidentical bone marrow transplantation with conditioning regimen of clofarabine and busulfan. Clofarabine/busulfan conditioning might be a preferable option for children with multiple recurrent ALL, and warrants further investigation. PMID:26523380

  9. Monosomy 7 in donor cell-derived leukemia after bone marrow transplantation for severe aplastic anemia: report of a new case and review of the literature

    Directory of Open Access Journals (Sweden)

    Luize Otero

    2012-01-01

    Full Text Available Monosomy 7 arises as a recurrent chromosome aberration in donor cell leukemia after hematopoietic stem cell transplantation. We report a new case of donor cell leukemia with monosomy 7 following HLA-identical allogenic bone marrow transplantation for severe aplastic anemia (SAA. The male patient received a bone marrow graft from his sister, and monosomy 7 was detected only in the XX donor cells, 34 months after transplantation. The patient's bone marrow microenvironment may have played a role in the leukemic transformation of the donor hematopoietic cells.

  10. Bone marrow contribution to eosinophilic inflammation

    Directory of Open Access Journals (Sweden)

    Denburg Judah A

    1997-01-01

    Full Text Available Allergen-induced bone marrow responses are observable in human allergic asthmatics, involving specific increases in eosinophil-basophil progenitors (Eo/B-CFU, measured either by hemopoietic assays or by flow cytometric analyses of CD34-positive, IL-3Ralpha-positive, and/or IL-5-responsive cell populations. The results are consistent with the upregulation of an IL-5-sensitive population of progenitors in allergen-induced late phase asthmatic responses. Studies in vitro on the phenotype of developing eosinophils and basophils suggest that the early acquisition of IL-5Ralpha, as well as the capacity to produce cytokines such as GM-CSF and IL-5, are features of the differentiation process. These observations are consistent with findings in animal models, indicating that allergen-induced increases in bone marrow progenitor formation depend on hemopoietic factor(s released post-allergen. The possibility that there is constitutive marrow upregulation of eosinophilopoiesis in allergic airways disease is also an area for future investigation.

  11. Skeletal Cell Fate Decisions Within Periosteum and Bone Marrow During Bone Regeneration

    OpenAIRE

    Colnot, Céline

    2008-01-01

    Bone repair requires the mobilization of adult skeletal stem cells/progenitors to allow deposition of cartilage and bone at the injury site. These stem cells/progenitors are believed to come from multiple sources including the bone marrow and the periosteum. The goal of this study was to establish the cellular contributions of bone marrow and periosteum to bone healing in vivo and to assess the effect of the tissue environment on cell differentiation within bone marrow and periosteum. Results...

  12. Bone marrow stromal cell: mediated neuroprotection for spinal cord repair

    OpenAIRE

    Ritfeld, Gaby Jane

    2014-01-01

    Currently, there is no treatment available that restores anatomy and function after spinal cord injury. This thesis explores transplantation of bone marrow-derived mesenchymal stem cells (bone marrow stromal cells; BMSCs) as a therapeutic approach for spinal cord repair. BMSCs secrete neurotrophic factors, enabling neuroprotection/tissue sparing in a rat model of spinal cord injury. In this model system, bone marrow stromal cell-mediated tissue sparing leads to motor and sensory function impr...

  13. Effects and Complications of Bone-Marrow Transplantation in Man

    International Nuclear Information System (INIS)

    Full text: Allogenic bone-marrow grafting in 24 human leukaemic subjects is described. The graft failed in 7 cases and took in 17 cases. In the latter group, all 17 cases were complicated by the secondary syndrome which was-fatal in 13 cases and controlled in 4 cases. The immunogenetic and immunological factors determining the establishment and evolution of haematological radiochimeras in man are discussed. The choice of donor is fundamental. Three tests are effective in donor selection, the indirect histocompatibility test, the leucocyte antigen test and the reaction of donor and recipient leucocytes in the dermis of an irradiated hamster. When marrow from several donors is transfused, the recipient spontaneously selects the genetically nearest. It seems likely there is more chance of finding a suitable donor among genetically related subjects than among those who are unrelated. The frequency of graft take seems slightly lower in recipients who have previously received blood transfusions. Total bone-marrow graft is associated with specific tolerance towards donor tissues. This is paralleled by the production in the chimera of immunoglobulins produced by the graft. The secondary syndrome seems, as in animals, to be related essentially to the graft-versus-host reaction. It is convenient to distinguish among its various manifestations, on the one hand, those lesions which are readily controlled such as hepatitis or erythrodermia associated with infiltration and proliferation of immunologically competent cells from the graft and, on the other hand, immune insufficiency with regard to micro-organisms, especially viruses and Candida albicans. This latter group, the mechanism of which is complex, still eludes attempts at preventive and curative control. The use of multiple donors and the administration of cortisone during marrow transfusion and A-methopterin and/or cyclophosphamide in the days following transfusions; seem to have reduced the severity of the secondary

  14. In vitro demonstration of a fundamental difference in the proliferation of murine and human bone marrow and lymphocytes following ultraviolet irradiation: relevance to bone marrow transplantation

    International Nuclear Information System (INIS)

    Exposure of rodent allogeneic donor marrow and splenocyte grafts to ultraviolet radiation (UVR) has been shown to permit durable engraftment at doses that abolish graft-versus-host disease (GVHD) and graft rejection. We have compared both murine and human alloreactive and mitogen induced lymphoid responses and bone marrow proliferation in mixed lymphocyte culture (MLC), phytomagglutinin (PHA)-induced proliferation and colony-forming unit granulocyte/macrophage (CFU-GM) assays using germicidal UVC (200-290 nm), broadband and narrowband UVB (290-320 nm) and UVA (320-400 nm) sources. Our data show a wavelength and dose-dependent reduction in lymphoid proliferation in the mouse with CFU-GM survival of 50-75% of control at doses required to abolish allogeneic lymphocyte responses for all lamps. In contrast, human lymphocyte responses are more resistant to UVC with CFU-GM proliferation reduced to zero when allostimulation is abolished. Mitogen-induced lymphoid responses show a similar wavelength-dependent sensitivity. Abolition of response in MLC using UV-irradiated stimulator cells was less sensitive than proliferation with UV-irradiated responder cells at all wavelengths in both species. With all sources, murine CFU-GM proliferation is less susceptible to UVR than human marrow at doses required to abolish lymphoid responses. (Author)

  15. Mechanisms of tolerance in murine radiation bone marrow chimeras. II. Absence of nonspecific suppression in mature chimeras

    International Nuclear Information System (INIS)

    Spleen cells from a series of allogeneic bone marrow chimeras were sensitized in vitro with stimulator cells from major histocompatibility complex recombinant strains of mice. The combinations were chosen such that both tolerated (host or donor) and nontolerated (third-party) antigens were present on the same stimulator cells in order to determine whether the tolerated host antigens might elicit nonspecific suppressor mechanisms affecting the cell-mediated lympholysis (CML) response to the nontolerated antigens. No evidence for such nonspecific suppression was obtained in several types of assays. Therefore, if suppressor mechanisms exist that mediate such tolerance in mature allogeneic chimeras then these mechanisms must be highly antigen-specific

  16. Bone marrow fibrosis in myelofibrosis: pathogenesis, prognosis and targeted strategies

    Science.gov (United States)

    Zahr, Abdallah Abou; Salama, Mohamed E.; Carreau, Nicole; Tremblay, Douglas; Verstovsek, Srdan; Mesa, Ruben; Hoffman, Ronald; Mascarenhas, John

    2016-01-01

    Bone marrow fibrosis is a central pathological feature and World Health Organization major diagnostic criterion of myelofibrosis. Although bone marrow fibrosis is seen in a variety of malignant and non-malignant disease states, the deposition of reticulin and collagen fibrosis in the bone marrow of patients with myelofibrosis is believed to be mediated by the myelofibrosis hematopoietic stem/progenitor cell, contributing to an impaired microenvironment favoring malignant over normal hematopoiesis. Increased expression of inflammatory cytokines, lysyl oxidase, transforming growth factor-β, impaired megakaryocyte function, and aberrant JAK-STAT signaling have all been implicated in the pathogenesis of bone marrow fibrosis. A number of studies indicate that bone marrow fibrosis is an adverse prognostic variable in myeloproliferative neoplasms. However, modern myelofibrosis prognostication systems utilized in risk-adapted treatment approaches do not include bone marrow fibrosis as a prognostic variable. The specific effect on bone marrow fibrosis of JAK2 inhibition, and other rationally based therapies currently being evaluated in myelofibrosis, has yet to be fully elucidated. Hematopoietic stem cell transplantation remains the only curative therapeutic approach that reliably results in resolution of bone marrow fibrosis in patients with myelofibrosis. Here we review the pathogenesis, biological consequences, and prognostic impact of bone marrow fibrosis. We discuss the rationale of various anti-fibrogenic treatment strategies targeting the clonal hematopoietic stem/progenitor cell, aberrant signaling pathways, fibrogenic cytokines, and the tumor microenvironment. PMID:27252511

  17. Bone marrow fibrosis in myelofibrosis: pathogenesis, prognosis and targeted strategies.

    Science.gov (United States)

    Zahr, Abdallah Abou; Salama, Mohamed E; Carreau, Nicole; Tremblay, Douglas; Verstovsek, Srdan; Mesa, Ruben; Hoffman, Ronald; Mascarenhas, John

    2016-06-01

    Bone marrow fibrosis is a central pathological feature and World Health Organization major diagnostic criterion of myelofibrosis. Although bone marrow fibrosis is seen in a variety of malignant and non-malignant disease states, the deposition of reticulin and collagen fibrosis in the bone marrow of patients with myelofibrosis is believed to be mediated by the myelofibrosis hematopoietic stem/progenitor cell, contributing to an impaired microenvironment favoring malignant over normal hematopoiesis. Increased expression of inflammatory cytokines, lysyl oxidase, transforming growth factor-β, impaired megakaryocyte function, and aberrant JAK-STAT signaling have all been implicated in the pathogenesis of bone marrow fibrosis. A number of studies indicate that bone marrow fibrosis is an adverse prognostic variable in myeloproliferative neoplasms. However, modern myelofibrosis prognostication systems utilized in risk-adapted treatment approaches do not include bone marrow fibrosis as a prognostic variable. The specific effect on bone marrow fibrosis of JAK2 inhibition, and other rationally based therapies currently being evaluated in myelofibrosis, has yet to be fully elucidated. Hematopoietic stem cell transplantation remains the only curative therapeutic approach that reliably results in resolution of bone marrow fibrosis in patients with myelofibrosis. Here we review the pathogenesis, biological consequences, and prognostic impact of bone marrow fibrosis. We discuss the rationale of various anti-fibrogenic treatment strategies targeting the clonal hematopoietic stem/progenitor cell, aberrant signaling pathways, fibrogenic cytokines, and the tumor microenvironment. PMID:27252511

  18. Thrombotic thrombocytopenic purpura after allogeneic stem cell transplantation : a survey of the European Group for Blood and Marrow Transplantation (EBMT)

    NARCIS (Netherlands)

    Ruutu, T; Hermans, J; Niederwieser, D; Gratwohl, A; Kiehl, M; Volin, L; Bertz, H; Ljungman, P; Spence, D; Verdonck, LF; Prentice, HG; Bosi, A; du Toit, CE; Brinch, L; Apperley, JF

    2002-01-01

    A survey was carried out among the European Group for Blood and Marrow Transplantation (EBMT) centres to determine the incidence, risk factors, treatment and outcome of thrombotic thrombocytopenic purpura (TTP) following allogeneic haematopoietic stem cell transplantation. TTP was defined as the sim

  19. Haemopoiesis in murine bone marrow and spleen after fractionated irradiation and repeated bone marrow transplantation. I

    International Nuclear Information System (INIS)

    Erythropoiesis was studied in mice repeatedly exposed to doses of 3 Gy of 60Co γ-rays at 4-day intervals up to a total dose of 24 Gy on the basis of total bone marrow and spleen cellularity follow-up and analysis of myelograms and splenograms. Half the number of the mice received 106 nuclear cells of syngeneic bone marrow after each fractional radiation dose. It was mainly the spleen which was involved in the adaptation and regeneration of erythropoiesis, its contribution to total erythropoiesis in bone marrow recipients having been as high as 73.9% (day 20 of experiment, total dose 15 Gy). In mice only irradiated, the number of nuclear cells of erythroid lineage decreased to zero values sooner in the spleen (day 16 of experiment, total dose 12 Gy) than in the bone marrow (day 24 of experiment, total dose 18 Gy). The analysis of the results of collections made on day 9 after the last irradiation revealed, however, that the hemopoietic microenvironment of the spleen and hemopoietic cells capable of differentiation in the erythroid direction were so resistant to irradiation in mice only irradiated that erythropoiesis in their spleens exhibited signs of regeneration even after the highest total dose of 24 Gy. (author). 2 figs., 3 tabs., 12 refs

  20. Autologous bone marrow transplantation by photodynamic therapy

    Science.gov (United States)

    Gulliya, Kirpal S.

    1992-06-01

    Simultaneous exposure of Merocyanine 540 dye containing cultured tumor cells to 514-nm laser light (93.6 J/cm2) results in virtually complete cell destruction. Under identical conditions, 40% of the normal progenitor (CFU-GM) cells survive the treatment. Laser- photoradiation treated, cultured breast cancer cells also were killed, and living tumor cells could not be detected by clonogenic assays or by anti-cytokeratin monoclonal antibody method. Thus, laser photoradiation therapy could be useful for purging of contaminating tumor cells from autologous bone marrow.

  1. Helical CT of the paranasal sinuses prior to bone marrow transplantation

    International Nuclear Information System (INIS)

    Purpose: To investigate the clinical necessity of CT of the paranasal sinuses before bone marrow or peripheral blood stem cell transplantation. Patients and methods: 80 patients with malignant disease underwent coronal CT of the paranasal sinuses prior to transplantation to exclude sinusitis. Results: CT revealed sinusitis requesting therapy in 17/80 patients (21%). Patients with leukaemia and non-Hodgkin lymphoma were significantly more affected. Chronic sinusitis was found in two patients, mucosal swelling not requesting therapy in 22, and normal findings in 39. Conclusion: CT of the paranasal sinuses is advised in patients suffering haemoblastoses with an increased risk of infectious complications during the transplantation phase, because pathological findings can be expected in 21% of the patients. Diagnosis and therapy of an infectious focus within the paranasal sinuses is especially important prior to allogenous bone marrow transplantation. (orig.)

  2. Enhanced antibody affinity in sublethally irradiated mice and bone marrow chimeras

    International Nuclear Information System (INIS)

    Sublethally irradiated mice primed with dinitrophenyl (Dnp)-keyhole limpet hemocyanin immediately after irradiation or 30 days later and subsequently boosted with a second injection of antigen displayed a secondary response to Dnp characterized by antibody affinity greater than that in unirradiated controls. Also, in radiation chimeras primed with Dnp-keyhole limpet hemocyanin 120 days after syngeneic or allogeneic bone marrow transplantation the antibodies against Dnp produced after boosting were of higher affinity than the antibodies raised in normal mice. These findings are tentatively attributed to lack of suppressor thymus-derived lymphocytes (T cells) in sublethally irradiated mice and bone marrow chimeras, in which the enhanced ability to produce antibodies of high affinity may compensate for quantitative defects of the immune system

  3. The determination of lymphoid cell chimerism using peripheral blood lymphocytes from murine bone marrow chimeras

    International Nuclear Information System (INIS)

    A simple, rapid and accurate method was devised for determining lymphoid cell chimerism in bone marrow-reconstituted mice. Chimeras were produced by reconstituting lethally irradiated mice with semi-allogeneic bone marrow cells. Lymphocytes from the peripheral blood of individual chimeric mice were purified by sedimentation in dextran solution and differential flotation in Ficoll-Hypaque gradients. From 250-500 μl of blood, 1-7 x 105 cells were routinely obtained. The extent of chimerism was determined serologically by using peripheral blood lymphocytes as target cells in a dye exclusion microcytotoxicity assay. Using this new technique, approximately 80% of the reconstituted mice were found to be repopulated with lymphocytes of the donor type. (Auth.)

  4. Invasive pulmonary aspergillosis 10 years post bone marrow transplantation: a case report

    Directory of Open Access Journals (Sweden)

    Rashid Rifat

    2009-01-01

    Full Text Available Abstract Introduction Invasive pulmonary aspergillosis is a leading cause of mortality and morbidity in bone marrow transplant recipients. Establishing the diagnosis remains a challenge for clinicians working in acute care setting. However, prompt diagnosis and treatment can lead to favourable outcomes Case presentation We report a case of invasive aspergillosis occurring in a 39-year-old Caucasian female 10 years after an allogeneic haematopoietic bone marrow transplant, and 5 years after stopping all immunosuppression. Possible risk factors include bronchiolitis obliterans and exposure to building dust (for example, handling her husband's dusty overalls. There are no similar case reports in the literature at this time. Conclusion High clinical suspicion, especially in the setting of failure to respond to broad-spectrum antibiotics, should alert clinicians to the possibility of invasive pulmonary aspergillosis, which, in this case, responded to antifungal therapy.

  5. Regenerate augmentation with bone marrow concentrate after traumatic bone loss.

    Science.gov (United States)

    Gessmann, Jan; Köller, Manfred; Godry, Holger; Schildhauer, Thomas Armin; Seybold, Dominik

    2012-01-01

    Distraction osteogenesis after post-traumatic segmental bone loss of the tibia is a complex and time-consuming procedure that is often complicated due to prolonged consolidation or complete insufficiency of the regenerate. The aim of this feasibility study was to investigate the potential of bone marrow aspiration concentrate (BMAC) for percutaneous regenerate augmentation to accelerate bony consolidation of the regenerate. Eight patients (age 22-64) with an average posttraumatic bone defect of 82.4 mm and concomitant risk factors (nicotine abuse, soft-tissue defects, obesity and/or circulatory disorders) were treated with a modified Ilizarov external frame using an intramedullary cable transportation system. At the end of the distraction phase, each patient was treated with a percutaneously injection of autologous BMAC into the centre of the regenerate. The concentration factor was analysed using flow cytometry. The mean follow up after frame removal was 10 (4-15) months. With a mean healing index (HI) of 36.9 d/cm, bony consolidation of the regenerate was achieved in all eight cases. The mean concentration factor of the bone marrow aspirate was 4.6 (SD 1.23). No further operations concerning the regenerate were needed and no adverse effects were observed with the BMAC procedure. This procedure can be used for augmentation of the regenerate in cases of segmental bone transport. Further studies with a larger number of patients and control groups are needed to evaluate a possible higher success rate and accelerating effects on regenerate healing.

  6. COMPARATIVE EVALUATION OF BONE MARROW ASPIRATION AND BONE MARROW BIOPSY IN HAEMATOLOGICAL CONDITIONS

    Directory of Open Access Journals (Sweden)

    Netra

    2015-12-01

    Full Text Available CONTEXT Due to diagnostic difficulties by peripheral smear alone, evaluation of the bone marrow is required for confirmation of a suspected clinical diagnosis. AIMS To study and to correlate the bone marrow aspiration with biopsy findings. METHODS AND MATERIAL A total number of 100 cases were evaluated. Bone marrow aspiration slides were stained with Leishman stain and biopsy sections were stained with haematoxylin and eosin after decalcification. STATISTICAL ANALYSIS Chi square test to evaluate sensitivity, specificity, positive and negative predictive value. P values obtained after completion of 100 cases and Kappa value determined to know the strength of agreement between bone marrow aspiration and biopsy diagnosis. RESULTS Of the 100 cases studied, the age of the patient ranged from 4-78 years with male-to-female ratio being 1.3:1. The most common condition was anaemia (47% and the most common haematological malignancy was multiple myeloma (13%. In our institution, the incidence of multiple myeloma was found to be higher than leukemia. There was a positive correlation of 85.8%, sensitivity of bone marrow aspiration was found to be 88.5% and Negative Predictive Value (NPV was 94.4%. The p value of 0.001 was statistically significant and the Kappa value of 0.91 shows an excellent agreement between aspiration and biopsy diagnosis. CONCLUSIONS Aspiration helps to know the better morphology of the cells and biopsy to assess the cellularity, pattern of distribution of cells. Biopsy is also useful when aspiration is inadequate due to faulty technique. Hence, combined evaluation helps in accurate diagnosis and management.

  7. Imatimid-induced bone marrow necrosis detected on MRI examination and mimicking bone metastases

    Energy Technology Data Exchange (ETDEWEB)

    Vanel, D.; Bonvalot, S.; Pechoux, C. le; Cioffi, A.; Domont, J.; Cesne, A. le [Institut Gustave Roussy, Villejuif (France)

    2007-09-15

    Imatinib has revolutionized the treatment and prognosis of patients with gastrointestinal stromal tumors (GIST). In contrast to liver and/or abdominal involvement, bone metastases are an uncommon event in GIST. We report here two patients with metastatic GIST who developed pelvic bone marrow focal lesions visible on MRI examinations, while Imatinib dramatically improved other tumor sites. A biopsy in one patient diagnosed bone marrow necrosis. The other patient had a favorable follow-up over several years, without bone metastases. Focal bone marrow abnormalities, detected on MRI examinations and mimicking bone metastases in patients who were otherwise responding, should be considered as probable bone marrow necrosis. (orig.)

  8. 同种异体骨髓间充质干细胞移植治疗糖尿病大鼠的实验研究%An experimental study on treatment of diabetic rats through transplantation of allogeneic bone marrow mesenchymal stem cells

    Institute of Scientific and Technical Information of China (English)

    高斌; 宓真; 杜馨丽; 车海龙

    2011-01-01

    Objective: To observe the curative effectiveness of allogeneic bone marrow mesenchymal stem cells (BMSC) transplantation in diabetic rats and the possible mechanism.Methods: BMSC were isolated from allogeneic bone marrow of SD rat by adhesive screening method and cultured in vitro.The second passage of BMSC was transfected with Ad-GFP.BMSC that stably expressed CFP were obtained before transplantation.Streptozotocin-induced diabetic rats (plasma glucose > 16.7 mmol/L) were divided at random into untreated group (UTG) and BMSC transplantation group (TPG).BMSC were transplanted into allogeneic diabetic rats of TPG through vena caudalis (0.4 ml, 1×106-1×l07/ml).Another 5 normal rats picked out at random (normal control group) and the diabetic rats of UTG were injected via tail vein with the same quantity of physiological saline.After the 2 weeks transplantation, the levels of plasma glucose, HbA1c and insulin were determined.The pancreas was dissected out for pathological sections.Insulin reaction with immunohistochemistry of rats was observed.Fluorescent microscopy was used to observe the expression of GFP labeled cells in the pancreas.Results: The result showed that levels of plasma glucose and HbA1c were higher obviously in UTG than in normal control group (NCG), and insulin level lower (P<0.001).The levels of plasma glucose and HbA,c were lower obviously in TPG than in UTG (P<0.05), and insulin level higher (P>0.05).The numbers of beta-cells of the UTG decreased and the insulin reaction showed negative results.The numbers of beta-cells of the TPG increased and the insulin reaction showed positive and strong positive results.The cells of GFP were observed in the excrine tissues of pancreas, but not observed in the islet.Conclusion: It is concluded that BMSC transplantation by tail vein injection could engraft into pancreas tissues of diabetic rats, depress the levels of plasma glucose and HbA1c, accelerate the synthesis of the insulin.BMSC transplantation

  9. Tolerance induction using nanoparticles bearing HY peptides in bone marrow transplantation.

    Science.gov (United States)

    Hlavaty, Kelan A; McCarthy, Derrick P; Saito, Eiji; Yap, Woon Teck; Miller, Stephen D; Shea, Lonnie D

    2016-01-01

    Allogeneic cell therapies have either proven effective or have great potential in numerous applications, though the required systemic, life-long immunosuppression presents significant health risks. Inducing tolerance to allogeneic cells offers the potential to reduce or eliminate chronic immunosuppression. Herein, we investigated antigen-loaded nanoparticles for their ability to promote transplant tolerance in the minor histocompatibility antigen sex-mismatched C57BL/6 model of bone marrow transplantation. In this model, the peptide antigens Dby and Uty mediate rejection of male bone marrow transplants by female CD4+ and CD8+ T cells, respectively, and we investigated the action of nanoparticles on these T cell subsets. Antigens were coupled to or encapsulated within poly(lactide-co-glycolide) (PLG) nanoparticles with an approximate diameter of 500 nm. Delivery of the CD4-encoded Dby epitope either coupled to or encapsulated within PLG particles prevented transplant rejection, promoted donor-host chimerism, and suppressed proliferative and IFN-γ responses in tolerized recipients. Nanoparticles modified with the Uty peptide did not induce tolerance. The dosing regimen was investigated with Dby coupled particles, and a single dose delivered the day after bone marrow transplant was sufficient for tolerance induction. The engraftment of cells was significantly affected by PD-1/PDL-1 costimluation, as blockade of PD-1 reduced engraftment by ∼50%. In contrast, blockade of regulatory T cells did not impact the level of chimerism. The delivery of antigen on PLG nanoparticles promoted long-term engraftment of bone marrow in a model with a minor antigen mismatch in the absence of immunosuppression, and this represents a promising platform for developing a translatable, donor-specific tolerance strategy.

  10. Endocrine complications following pediatric bone marrow transplantation.

    Science.gov (United States)

    Ho, Josephine; Lewis, Victor; Guilcher, Gregory M T; Stephure, David K; Pacaud, Danièle

    2011-01-01

    Pediatric bone marrow transplantation (BMT) for various diseases can lead to endocrine system dysfunction owing to preparative regimens involving chemotherapy and radiation therapy. We assessed the prevalence of post-BMT endocrine complications in children treated at the Alberta Children's Hospital (ACH) from 1991 to 2001. Time of onset of endocrine dysfunction, underlying disease processes, chemotherapy, radiation therapy and age at BMT were characterized. Subjects of primary hypothyroidism 1.2%, compensated hypothyroidism 7.0%, hyperthyroidism 2.4%, hypergonadotrophic hypogonadism 22.4%, abnormal bone density 2.4%, and secondary diabetes mellitus 1.2%. These findings emphasize the need to screen for endocrine system dysfunction, particularly hypergonadotrophic hypogonadism, in children who have undergone BMT. Children need long-term follow-up so that endocrine complications can be diagnosed and treated promptly. PMID:21823531

  11. Effect of radiation therapy on autologous and allogeneic bone grafts

    International Nuclear Information System (INIS)

    Purpose: Currently no significant literature exists regarding the effects of therapeutic radiation on bone graft integrity in humans. As the combination of these procedures is frequently necessary in the treatment of neoplasms, we have retrospectively analyzed graft outcomes in irradiated sites. Materials and Methods: 40 autologous or allogeneic bone grafts in 35 patients treated at the Massachusetts General Hospital (MGH) between 1977 and 1995 were evaluated. Preoperative radiation was given in 28 cases, postoperative in 21 cases. Radiation was delivered as external beam photons, 160 MeV protons or brachytherapy implant. Doses ranged from 3 to 83 Gy. Grafts were located in the spine (17), pelvis (13), femur (5), humerus (2) and tibia (3). Functional graft survival and healing quality were determined radiographically. Failure free survival rates were calculated using the Kaplan-Meier method and linear regressions were performed using the Wilcoxan method. Results: Overall rates of graft survival were 86% at 1 yr and 73% at 5 yrs. For auto grafts and allografts the 1 yr rates were 100% and 80% (p=.96). No significant differences in outcome based on treatment chronology were found with survival rates of 81% for preoperative treatment and 86% for postoperative treatment. With linear regression analysis there was no relation between outcome and time between surgery and radiation (p=.89). Further, no relation between bone dose (preoperative + postoperative dose), graft dose (postoperative dose) or mean dose/day and outcome was found (p=.50, p=.49 and p=.43). Failures were evenly distributed amongst high and low dose groups. The use of chemotherapy did not significantly effect outcome with a survival rate of 85% compared to 87%. Tobacco use was a significant predictor of failure with 63% graft survival compared to 94% in non-smokers (p=.038). Quality of bone healing rated poor overall, but was highly variable and did not correlate with dose or chronology of therapy

  12. Bone marrow stromal cells elicit tissue sparing after acute but not delayed transplantation into the contused adult rat thoracic spinal cord.

    NARCIS (Netherlands)

    Tewarie, R.D.; Hurtado, A.; Ritfeld, G.J.; Rahiem, S.T.; Wendell, D.F.; Barroso, M.M.; Grotenhuis, J.A.; Oudega, M.

    2009-01-01

    Bone marrow stromal cells (BMSC) transplanted into the contused spinal cord may support repair by improving tissue sparing. We injected allogeneic BMSC into the moderately contused adult rat thoracic spinal cord at 15 min (acute) and at 3, 7, and 21 days (delayed) post-injury and quantified tissue s

  13. Equine mesenchymal stem cells from bone marrow, adipose tissue and umbilical cord: immunophenotypic characterization and differentiation potential

    OpenAIRE

    Barberini, Danielle Jaqueta; Freitas, Natália Pereira Paiva; Magnoni, Mariana Sartori; Maia, Leandro; Listoni, Amanda Jerônimo; Heckler, Marta Cristina; Sudano, Mateus Jose; Golim, Marjorie Assis; da Cruz Landim-Alvarenga, Fernanda; Amorim, Rogério Martins

    2014-01-01

    Introduction Studies with mesenchymal stem cells (MSCs) are increasing due to their immunomodulatory, anti-inflammatory and tissue regenerative properties. However, there is still no agreement about the best source of equine MSCs for a bank for allogeneic therapy. The aim of this study was to evaluate the cell culture and immunophenotypic characteristics and differentiation potential of equine MSCs from bone marrow (BM-MSCs), adipose tissue (AT-MSCs) and umbilical cord (UC-MSCs) under identic...

  14. Idiopathic interstitial pneumonia following bone marrow transplantation: the relationship with total body irradiation

    International Nuclear Information System (INIS)

    Interstitial pneumonia is a frequent and often fatal complication of allogenic bone marrow transplantation. Thirty to 40 percent of such cases are of unknown etiology and have been labelled as cases of idiopathic interstitial pneumonia. Idiopathic cases are more commonly associated with the use of total body irradiation; their occurrence appears to be independent of immunosupression or graft versus host disease. Evidence is presented from the literature suggesting that the development of idiopathic interstitial pneumonia is related to the absolute absorbed dose of radiation to lung. The similarity of idiopathic pneumonia to radiation pneumonitis seen in a different clinical setting is described

  15. Bone marrow scintigraphy with antigranulocyte antibody in multiple myeloma: comparison with simple radiography and bone scintigraphy

    International Nuclear Information System (INIS)

    Simple X-ray study and bone scan have limitations for early diagnosis of bone or bone marrow lesions in multiple myeloma. The purpose of this study was to evaluate the diagnostic usefulness of bone marrow immunoscintigraphy using anti-granulocyte monoclonal antibody for the evaluation of bone involvement in multiple myeloma. In 22 patients (Male: 15, Female: 7) with multiple myeloma, we performed whole-body immunoscintigraphy using 99mTc-labelled antigranulocyte antibody (BW 250/183, Scintimum Granulozyt R CIS, France) and compared the findings with those of simple bone radiography and 99mTc-MDP bone scan. Abnormal findings in bone marrow scintigraphy were considered to be present in case of expansion of peripheral bone marrow or focal photon defect in axial bones. Marrow expansion was noted in 15 of 22 patients (68%). Focal photon defects were found in 18 patients (82%). While one (33%) of 3 patients with Stage II disease showed focal defects in bone marrow scan, abnormal focal defects were observed in 17 of 19 (90%) patients with Stage III. Among 124 focal abnormal sites which were observed in bone marrow scan, bone scan or simple bone radiography, bone marrow scan detected 92 sites (74%), whereas 82 sites (66%) were observed in simple bone radiogrpahy (58 sites, 47%) or bone scan (40 sites, 32%). Fifty-one(41%) out of 124 bone lesions were detected by bone marrow scan only, and located mostly in thoracolumbar spine. Bone marrow scan using 99mTc-labelled antigranulocyte antibody seems to be a more sensitive procedure for the detection of pathologic bone lesions than simple bone X-ray or bone scan in patients with multiple myeloma

  16. Bone marrow stromal cell : mediated neuroprotection for spinal cord repair

    NARCIS (Netherlands)

    Ritfeld, Gaby Jane

    2014-01-01

    Currently, there is no treatment available that restores anatomy and function after spinal cord injury. This thesis explores transplantation of bone marrow-derived mesenchymal stem cells (bone marrow stromal cells; BMSCs) as a therapeutic approach for spinal cord repair. BMSCs secrete neurotrophic f

  17. Magnetic resonance in hematological diseases. Imaging of bone marrow

    DEFF Research Database (Denmark)

    Jensen, K.E.

    1995-01-01

    Magnetic resonance imaging (MRI) is a highly sensitive alternative to plain radiography, CT, and radionuclide studies for the imaging of normal and abnormal bone marrow. The cellularity and the corresponding fat/water ratio within the bone marrow show clear changes in haematological diseases. Thi...

  18. Prospective study of bone marrow in haematological disorders

    Directory of Open Access Journals (Sweden)

    Bhagya Lakshmi Atla

    2015-08-01

    Conclusion: The present study showed the usefulness of bone marrow aspiration and trephine biopsy in evaluation of the bone marrow in routine haematological disorders and also for understanding disease progression, for diagnosis and therapeutic evaluation. These are also helpful in planning further investigation and management. [Int J Res Med Sci 2015; 3(8.000: 1917-1921

  19. Bone marrow changes in patients with thyroid carcinoma

    International Nuclear Information System (INIS)

    In 62 patients with thyroid carcinoma 79 MRI bone marrow examinations and 48 bone marrow scintigraphies were recorded before or following radioiodine therapy, to study the extent of bone marrow expansion. The results of both methods were the same. In 34/79 investigations normal findings were seen, in 18 the bone marrow expanded to the middle third and in 26 to the distal third of the femur. One patient showed bone marrow expansion to the tibia. These results were compared with the following data: Histology of tumor, TNM-staging, time passed since thyroidectomy, accumulated doses of radioiodine therapy, results of 131I scintigraphy, hematological changes, thyroglobulin level, age and sex. No significant correlations were found between these and the bone marrow imaging results. Bone marrow changes in patients before radioiodine therapy were similar to those in patients treated with up to 48 GBq 131I. Blind biopsy of the posterior iliac crest in five patients showed slightly pathological reactive changes. In only 2/17 follow-up studies an increase of bone marrow expansion was seen. In 8 patients localized findings indicating malignant infiltration were observed. In 4/8 patients metastases of thyroid carcinoma were known or confirmed by pathological radioiodine uptake and in 2/8 metastatic involvement was assumed because of an increased thyroglobulin level. (orig.)

  20. Tratamento da recidiva da leucemia mielóide crônica após transplante de medula óssea alogênico utilizando mesilato de imatinibe: relato de três casos Treatment of chronic myelogenous leukemia relapse after allogeneic bone marrow transplantation with imatinib mesylate: report of three cases

    Directory of Open Access Journals (Sweden)

    Ronald Pallotta

    2006-06-01

    Full Text Available O mesilato de imatinibe (MI, inibidor seletivo da tirosinoquinase envolvido na patogênese da leucemia mielóide crônica (LMC, tem se constituído como terapia farmacológica de primeira linha para o tratamento desta doença. A infusão de linfócitos do doador (DLI tem sido considerada como tratamento padrão para recidiva da LMC após transplante de medula óssea (TMO alogênico, apesar de estar freqüentemente associado à ocorrência de doença do enxerto contra hospedeiro e mielossupressão. Por apresentar resultados satisfatórios e boa tolerabilidade no tratamento da LMC, os autores empregaram o mesilato de imatinib como terapêutica alternativa à DLI em pacientes que sofreram recidiva após o TMO. Obtiveram sucesso em dois casos, sendo que em um houve retorno comprovado do quimerismo do doador. No terceiro caso houve progressão da doença e o paciente foi encaminhado para segundo TMO. Desta forma, devido ao caráter recente do tema, este estudo descritivo sugere que esta opção terapêutica possa ser estudada como alternativa na recaída pós-TMO.Imatinib mesylate (MI, a selective tyrosine kinase inhibitor involved in the pathogenesis of chronic myelogenous leukemia (CML, has become the first-line treatment for this disease. Donor lymphocyte infusion (DLI has been considered as the standard treatment for relapse after allogeneic bone marrow transplantation (BMT, even though it is frequently associated with graft versus host disease and myelosuppression. Because of the satisfactory results and tolerance of the treatment of CML, the authors used MI as an alternative therapy for DLI in patients that relapsed after BMT. They obtained cytogenetic remission in two cases, with, in one case, proven conversion to the donor chimera. The third case evolved with progression of the disease and a second BMT was required. Since this is a new alternative, this descriptive study suggests it should be considered as an alternative therapy for relapse

  1. [Bone marrow stromal damage mediated by immune response activity].

    Science.gov (United States)

    Vojinović, J; Kamenov, B; Najman, S; Branković, Lj; Dimitrijević, H

    1994-01-01

    The aim of this work was to estimate influence of activated immune response on hematopoiesis in vitro, using the experimental model of BCG immunized BALB/c mice and in patients with chronic immunoactivation: long-lasting infections, autoimmunity or malignancy. We correlated changes in long term bone marrow cultures (Dexter) and NBT reduction with appearance of anemia in patients and experimental model of immunization by BCG. Increased spontaneous NBT reduction pointed out role of macrophage activation in bone marrow stroma damage. Long-term bone marrow cultures showed reduced number of hematopoietic cells, with predomination of fibroblasts and loss of fat cells. This results correlated with anemia and leucocytosis with stimulated myelopoiesis in peripheral blood. Activation of immune response, or acting of any agent that directly changes extracellular matrix and cellularity of bone marrow, may result in microenviroment bone marrow damage that modify hematopoiesis.

  2. Bone-marrow MR imaging before and after autologous marrow transplantation in lymphoma patients without known bone-marrow involvement

    International Nuclear Information System (INIS)

    Purpose: To study lumbar bone marrow by means of MR imaging before and after bone-marrow transplantation in lymphoma patients. Particular emphasis was paid to heterogeneity and to focal manifestations, i.e. appearances that could simulate tumor. Material and Methods: Twenty-two patients who were disease-free for a minimum of 30 months after transplantation were studied in 107 MR examinations. Two radiologists visually evaluated coronal T1-weighted and short inversion time inversion-recovery (STIR) images. Results: T1-weighted images demonstrated a more heterogeneous marrow after transplantation than before it. Sharply defined focal low signal intensity areas appeared on this sequence in 5 (23%) of the 22 patients at between 21 and 60 weeks after transplantation. The mean age of these 5 patients was 48.4 years (range 42-54 years). The difference in age between these 5 patients and the remaining 17 patients, who had a mean age of 33.4 years (range 14-51 years), was statistically significant (p<0.01, Student's t-test, 2-sided test). Conclusion: Sharply defined focal low signal intensity areas may be seen on T1-weighted images of bone marrow in patients who are in complete remission after transplantation, particularly in those aged over 40-45 years. (orig.)

  3. Magnetic resonance imaging of the bone marrow after bone marrow transplantation or immunosuppressive therapy in aplastic anemia.

    OpenAIRE

    Park, J M; Jung, H.A.; Kim, D. W.; Lee, J. W.; Kim, C. C.; Hahn, S. T.

    2001-01-01

    To compare magnetic resonance (MR) images of the bone marrow (BM) after bone marrow transplantation or immunosuppressive therapy in patients with aplastic anemia (AA), MR imaging of BM was reviewed retrospectively in 16 patients (13 males and 3 females, mean age 26 yr) with AA who completely responded clinically after transplantation or immunosuppressive therapy. The signal intensity (SI) of BM was classified into four patterns according to the increasing amount of cellular marrow, i.e., patt...

  4. Second allogeneic stem cell transplant for aplastic anaemia: a retrospective study by the Severe Aplastic Anaemia Working Party of the European Society for Blood and Marrow Transplantation.

    Science.gov (United States)

    Cesaro, Simone; Peffault de Latour, Regis; Tridello, Gloria; Pillon, Marta; Carlson, Kristina; Fagioli, Franca; Jouet, Jean-Pierre; Koh, Mickey B C; Panizzolo, Irene Sara; Kyrcz-Krzemien, Slawomira; Maertens, Johan; Rambaldi, Alessandro; Strahm, Brigitte; Blaise, Didier; Maschan, Alexei; Marsh, Judith; Dufour, Carlo

    2015-11-01

    We analysed the outcome of a second allogeneic haematopoietic stem cell transplant (alloHSCT) in 162 patients reported to the European Society for Blood and Marrow Transplantation between 1998 and 2009. Donor origin was a sibling in 110 and an unrelated donor in 52 transplants, respectively. The stem cell source was bone marrow in 31% and peripheral blood in 69% of transplants. The same donor as for the first alloHSCT was used in 81% of transplants whereas a change in the choice of stem cell source was reported in 56% of patients, mainly from bone marrow to peripheral blood. Neutrophil and platelet engraftment occurred in 85% and 72% of patients, after a median time of 15 and 17 days, respectively. Grade II-IV acute graft-versus-host disease (GVHD) and chronic GVHD occurred in 21% and 37% of patients, respectively. Graft failure (GF) occurred in 42 patients (26%). After a median follow-up of 3·5 years, the 5-year overall survival (OS) was 60·7%. In multivariate analysis, the only factor significantly associated with a better outcome was a Karnofsky/Lansky score ≥80 (higher OS). We conclude that a second alloHSCT is feasible rescue option for GF in SAA, with a successful outcome in 60% of cases.

  5. Effects of bone marrow transplantation and bone marrow shielding on the intestinal radiation injury

    International Nuclear Information System (INIS)

    The effects of hemopoietic tissue transplantation and bone marrow shielding on early intestinal injury in mice after high does gamma irradiation were studied. Fresh bone marrow cells (2 x 106) transplanted after 12 Gy and 10 Gy whole body irradiation had no protective effect on intestinal injury. In mice exposed to 14 Gy whole body or abdominal region irradiation, there was no difference in the decrease of intestinal epithelial cells and inhibition of crypt mitosis. Therefore hemopoietic tissue shielding could not reduce severity of intestinal damage. These results showed that the radiation injury of intestinal tract is essentially a direct effect of γ-ray and has not obvious relationship to the hemopoietic tissues

  6. Immune humanization of immunodeficient mice using diagnostic bone marrow aspirates from carcinoma patients.

    Directory of Open Access Journals (Sweden)

    Melanie Werner-Klein

    Full Text Available Tumor xenografts in immunodeficient mice, while routinely used in cancer research, preclude studying interactions of immune and cancer cells or, if humanized by allogeneic immune cells, are of limited use for tumor-immunological questions. Here, we explore a novel way to generate cancer models with an autologous humanized immune system. We demonstrate that hematopoietic stem and progenitor cells (HSPCs from bone marrow aspirates of non-metastasized carcinoma patients, which are taken at specialized centers for diagnostic purposes, can be used to generate a human immune system in NOD-scid IL2rγ(null (NSG and HLA-I expressing NSG mice (NSG-HLA-A2/HHD comprising both, lymphoid and myeloid cell lineages. Using NSG-HLA-A2/HHD mice, we show that responsive and self-tolerant human T cells develop and human antigen presenting cells can activate human T cells. As critical factors we identified the low potential of bone marrow HSPCs to engraft, generally low HSPC numbers in patient-derived bone marrow samples, cryopreservation and routes of cell administration. We provide here an optimized protocol that uses a minimum number of HSPCs, preselects high-quality bone marrow samples defined by the number of initially isolated leukocytes and intra-femoral or intra-venous injection. In conclusion, the use of diagnostic bone marrow aspirates from non-metastasized carcinoma patients for the immunological humanization of immunodeficient mice is feasible and opens the chance for individualized analyses of anti-tumoral T cell responses.

  7. Regenerate augmentation with bone marrow concentrate after traumatic bone loss

    Directory of Open Access Journals (Sweden)

    Jan Gessmann

    2012-03-01

    Full Text Available Distraction osteogenesis after post-traumatic segmental bone loss of the tibia is a complex and time-consuming procedure that is often complicated due to prolonged consolidation or complete insufficiency of the regenerate. The aim of this feasibility study was to investigate the potential of bone marrow aspiration concentrate (BMAC for percutaneous regenerate augmentation to accelerate bony consolidation of the regenerate. Eight patients (age 22-64 with an average posttraumatic bone defect of 82.4 mm and concomitant risk factors (nicotine abuse, soft-tissue defects, obesity and/or circulatory disorders were treated with a modified Ilizarov external frame using an intramedullary cable transportation system. At the end of the distraction phase, each patient was treated with a percutaneously injection of autologous BMAC into the centre of the regenerate. The concentration factor was analysed using flow cytometry. The mean follow up after frame removal was 10 (4-15 months. With a mean healing index (HI of 36.9 d/cm, bony consolidation of the regenerate was achieved in all eight cases. The mean concentration factor of the bone marrow aspirate was 4.6 (SD 1.23. No further operations concerning the regenerate were needed and no adverse effects were observed with the BMAC procedure. This procedure can be used for augmentation of the regenerate in cases of segmental bone transport. Further studies with a larger number of patients and control groups are needed to evaluate a possible higher success rate and accelerating effects on regenerate healing.

  8. Total body irradiation for bone marrow transplantation

    International Nuclear Information System (INIS)

    Purpose/Objective: The primary goal of this course is to develop an understanding of the rationale for the use of total body irradiation (TBI) as a component of cytoreduction for bone marrow transplantation, the techniques used, and the results of changing important parameters, such as dose, dose rate, and fractionation. Materials and Methods: Basic radiobiological principles relevant to TBI are reviewed; in particular, emphasis is placed on cell and animal studies which suggest means of optimizing TBI delivery to achieve maximum tumor cell kill and immunosuppression along with minimal normal tissue damage. Techniques utilized at various centers are described, with some discussion of achieving homogeneity, as well as inhomogeneity when desired with partial shielding or 'boosting'. A review of clinical studies, both randomized and non-randomized, is done; these are then interpreted in terms of potential optimization of the TBI parameters. Finally, comparison of TBI-containing regimens with chemotherapy-only regimens is done. Results: Radiobiological studies suggest a potential advantage for fractionated TBI over single dose TBI. Clinical studies support this view: highly fractionated regimens have allowed higher total doses to be used to increase malignant cell kill and immunosuppression without increasing toxicity. Randomized studies of TBI combined with VP-16 or cyclophosphamide versus busulfan combined with cyclophosphamide have either shown an advantage with TBI (in acute myelocytic leukemia in first remission) or no difference (in chronic myelogenous leukemia, chronic phase). Conclusion: TBI has been an effective component of cytoreductive regimens for marrow transplantation in patients with malignant disease, especially leukemias, which constitute 73% of all marrow transplants worldwide. Evidence supports fractionated TBI, to doses ≥ 13 Gy, when compared with single dose TBI. Randomized studies support the continued use of TBI in AML, and suggest that

  9. Glutamine supplementation in bone marrow transplantation.

    Science.gov (United States)

    Ziegler, Thomas R

    2002-01-01

    An increasing number of clinical investigations have focused on supplementation of specialized enteral and parenteral nutrition with the amino acid glutamine. This interest derives from strong evidence in animal models and emerging clinical data on the efficacy of glutamine administration following chemotherapy, trauma, sepsis and other catabolic conditions. Glutamine has protein-anabolic effects in stressed patients and, among many key metabolic functions, is used as a major fuel/substrate by cells of the gastrointestinal epithelium and the immune system. These effects may be particularly advantageous in patients undergoing bone marrow transplantation (BMT), who exhibit post-transplant body protein wasting, gut mucosal injury and immunodeficiency. Studies to date indicate that enteral and parenteral glutamine supplementation is well tolerated and potentially efficacious after high-dose chemotherapy or BMT for cancer treatment. Although not all studies demonstrate benefits, sufficient positive data have been published to suggest that this nutrient should be considered as adjunctive metabolic support of some individuals undergoing marrow transplant. However, BMT is a rapidly evolving clinical procedure with regard to the conditioning and supportive protocols utilized. Thus, additional randomized, double-blind, controlled clinical trials are indicated to define the efficacy of glutamine with current BMT regimens.

  10. X射线和γ射线预处理对小鼠异基因骨髓移植后造血免疫重建的影响%Effects of X-rays and γ-rays on reconstitution of hematopoiesis and immunity after allogeneic bone marrow transplantation

    Institute of Scientific and Technical Information of China (English)

    潘彬; 曾令宇; 程海; 宋国梁; 贾路; 闫志凌; 陈翀; 徐开林

    2011-01-01

    Objective To determine the conditioning regimen suitable for mice allogeneic hematopoietic stem cell transplantation (allo-HSCT).Methods Twelve BALB/c mice were randomly divided into 2 equal groups to undergo X-ray irradiation by linear accelerator at the dose of 7.0 Gy (pure X-ray group) or 60Co source irradiation at the dose of 7.0 Gy (pure γ-ray group).Thirty mice were randomly divided into 2 equal groups to undergo X-ray irradiation and then infusion of bone marrow from donor mice via caudal vein (X-ray + transplantation group) or γ-ray and then infusion of bone marrow via caudal vein (γ-ray + transplahtation group).3,5,7,10,15,20,and 30 d later peripheral blood samples were collected to calculate the number of white blood cells (WBCs) and detect the chimeric rates of lymphocytes by flow cytometry.5,10,and 20 d after irradiation 15 mice were killed with their lung,liver,small intestine,spleen,and femurs taken out to undergo pathological examination.Results The survival rates during the period 5-15 days of the γ-ray + transplantation group were all significantly higher than those of the X-ray + transplantation group.The pathological changes of organs of the X-ray +transplantation group were all more severe than those of the γ-ray + transplantation group.Since the fifth day after transplantation cells originating from the donor began to appear in the peripheral blood.The chimeric rate of the γ-ray + transplantation group 10 days after transplantation was (95.53± 2.57) %.The chimeric rates 5,10,and 20 days after transplantation of the γ-ray + transplantation group were all significantly higher than those of the X-ray + transplantation group (t = 15.263,3.256,P < 0.05).The WBC count of both irradiation groups decreased to the lowest level 5 d later and began to increase 10 days after transplantation and the WBC counts of the γ-ray + transplantation group 10 and 20 days aftertransplantation were both significantly higher than those of the X

  11. A method for generation of bone marrow-derived macrophages from cryopreserved mouse bone marrow cells.

    Directory of Open Access Journals (Sweden)

    Fernanda M Marim

    Full Text Available The broad use of transgenic and gene-targeted mice has established bone marrow-derived macrophages (BMDM as important mammalian host cells for investigation of the macrophages biology. Over the last decade, extensive research has been done to determine how to freeze and store viable hematopoietic human cells; however, there is no information regarding generation of BMDM from frozen murine bone marrow (BM cells. Here, we establish a highly efficient protocol to freeze murine BM cells and further generate BMDM. Cryopreserved murine BM cells maintain their potential for BMDM differentiation for more than 6 years. We compared BMDM obtained from fresh and frozen BM cells and found that both are similarly able to trigger the expression of CD80 and CD86 in response to LPS or infection with the intracellular bacteria Legionella pneumophila. Additionally, BMDM obtained from fresh or frozen BM cells equally restrict or support the intracellular multiplication of pathogens such as L. pneumophila and the protozoan parasite Leishmania (L. amazonensis. Although further investigation are required to support the use of the method for generation of dendritic cells, preliminary experiments indicate that bone marrow-derived dendritic cells can also be generated from cryopreserved BM cells. Overall, the method described and validated herein represents a technical advance as it allows ready and easy generation of BMDM from a stock of frozen BM cells.

  12. Assessment of functional displacement of bone marrow by osteoplastic metastases from prostatic carcinoma with bone marrow scintigraphy

    International Nuclear Information System (INIS)

    The detailed examination of the skeleton in prostate cancer has become more critical since surgical treatment requires the non-evidence of bone metastases. The data of 30 patients have been evaluated. All patients had a bone scan and a bone marrow scintigraphy with [99mTc[-anti-NCA95. In this study we compared the degree of bone marrow displacement with the extent of metastatic deposits identified on the bone scan. Six patients showing the criterias of a superscan (maximal avidity of the osteotrope radiatracer) had as a correlate a complete displacement of the hematopoesis in the bone marrow scintigraphy and an increased activity in liver and spleen. The degree of the peripheral extension correlated strongly with the decrease of the haemoglobin in blood samples. The grading was based upon the number of metastatic deposits identified on the scan (0=no metastases; 1≤6 metastases; 2=multiple metastases; 3=superscan). In 28 of 30 patients (93%) we found corresponding results in both the bone scan and the bone marrow scintigraphy. The bone marrow scintigraphy is a sensitive method in the detection of metastatic disease and gives additional information about the extent of bone marrow displacement by osteoplastic metastases. (orig.)

  13. Iron overload following bone marrow transplantation in children: MR findings

    International Nuclear Information System (INIS)

    Objective. The purpose of this study was to determine the incidence of post-transfusional iron overload in children after bone marrow transplantation by reviewing their magnetic resonance imaging (MR) findings. Materials and methods. We reviewed the abdominal MR studies of 13 children after autologous bone marrow transplantation. Nine of the children had also undergone MR prior to transplantation. Iron deposition in the liver, spleen and bone marrow was graded semi-quantitatively on both T1- and T2-weighted images. Serum ferritin levels and number of blood units given after bone marrow transplantation were recorded. Results. None of the pre-transplantation MR studies revealed iron overload. After bone marrow transplantation, three children showed normal liver and spleen. Iron overload in the liver was noted in ten patients (77 %), six of whom also showed iron overload in the spleen (46 %) and five in the bone marrow (38.5 %). The degree of hepatic iron overload was correlated significantly and splenic iron overload was correlated weakly with the number of blood transfusions (P 0.01 and P > 0.01, respectively), but neither was correlated with the serum ferritin level. Conclusion. Iron overload commonly accompanies bone marrow transplantation. The observed pattern of iron deposition, in which the spleen was uninvolved in 40 % of patients demonstrating iron overload, is not typical of post-transfusional hemochromatosis. (orig.)

  14. Posthumous Bone Marrow and its Significance for Transplantation

    International Nuclear Information System (INIS)

    Bone marrow obtained by aspiration from the chest and iliac crest of adults who had died suddenly, or by forcing it out of their vertebrae, has been studied at the Leningrad Research Institute for Haematology and Blood Transfusion since 1959, with morphological, functional and biochemical methods. It has been found that the vital activity of the bone-marrow cells depends on the time which has elapsed since death, the optimum period being the first six hours after death. As can be seen from a number of indices (phagocytic activity, capacity for granulopoiesis of vital dyes, luminescent microscopy and energy metabolism) posthumous bone marrow removed during this period differs little from donor bone marrow. The number of bone-marrow cells taken from corpses is several times greater than the number that can be taken from live donors. Experimental and clinical results show that the transplantation of posthumous bone marrow has a stimulating effect on haemopoiesis. On the basis-of the research that has been carried out, bone marrow obtained within six hours of death can be regarded as valuable, biologically active tissue suitable for transplantation. (author)

  15. Iron overload following bone marrow transplantation in children: MR findings

    Energy Technology Data Exchange (ETDEWEB)

    Kornreich, L.; Horev, G.; Grunebaum, M. [Department of Imaging, Schneider Children`s Medical Center of Israel, Beilinson Medical Campus, 49202 Petah Tikva, and Sackler Faculty of Medicine, Tel Aviv University (Israel); Yaniv, I.; Stein, J.; Zaizov, R. [Department of Pediatric Hematology-Oncology, Schneider Children`s Medical Center of Israel, Petah Tikva, and Sackler Faculty of Medicine, Tel Aviv University (Israel)

    1997-11-01

    Objective. The purpose of this study was to determine the incidence of post-transfusional iron overload in children after bone marrow transplantation by reviewing their magnetic resonance imaging (MR) findings. Materials and methods. We reviewed the abdominal MR studies of 13 children after autologous bone marrow transplantation. Nine of the children had also undergone MR prior to transplantation. Iron deposition in the liver, spleen and bone marrow was graded semi-quantitatively on both T1- and T2-weighted images. Serum ferritin levels and number of blood units given after bone marrow transplantation were recorded. Results. None of the pre-transplantation MR studies revealed iron overload. After bone marrow transplantation, three children showed normal liver and spleen. Iron overload in the liver was noted in ten patients (77 %), six of whom also showed iron overload in the spleen (46 %) and five in the bone marrow (38.5 %). The degree of hepatic iron overload was correlated significantly and splenic iron overload was correlated weakly with the number of blood transfusions (P = 0.01 and P > 0.01, respectively), but neither was correlated with the serum ferritin level. Conclusion. Iron overload commonly accompanies bone marrow transplantation. The observed pattern of iron deposition, in which the spleen was uninvolved in 40 % of patients demonstrating iron overload, is not typical of post-transfusional hemochromatosis. (orig.) With 1 fig., 2 tabs., 15 refs.

  16. The usefulness of bone and bone-marrow scintigraphy in the detection of bone lesion in patients with multiple myeloma

    International Nuclear Information System (INIS)

    We used a combination of bone and bone-marrow scintigraphy to study 15 patients with multiple myeloma (7 in untreated group and 8 in chemotherapy group). Of the 3 cases in untreated group whose 99mTc-methylene diphosphonate (MDP) bone scans showed no abnormality, one had abnormal bone-marrow scintigraphy. In other 4 cases of untreated group whose 99mTc-MDP bone scan showed cold defects, 99mTc-sulfur colloid bone-marrow scintigraphy clearly delineated the areas of tumor-cell invasion. In all chemotherapy cases, multiple hot spots were observed on bone scintigram, but abnormalities were not recognized on bone-marrow scintigram in all of their lesions. In conclusion, the combination technique of bone and bone-marrow scintigraphy was a useful method in evaluating bone lesions in patients with multiple myeloma. (author)

  17. Preliminary study on IL-7Rα intervening acute graft-versus-host disease after mice allogeneic bone marrow transplantation%白细胞介素7受体α干预小鼠异基因骨髓移植后急性移植物抗宿主病的初步研究

    Institute of Scientific and Technical Information of China (English)

    卫芬; 马梁明; 龚旭东; 任连生; 朱镭; 郭慧敏; 张华屏

    2013-01-01

    Objective To establish a mouse model of acute graft-versus-host disease (aGVHD) after allogeneic bone marrow transplantation,and using exogenous interleukin-7 receptor alpha (IL-7Rα) intervene mice aGVHD and analyse its possible mechanism.Methods The BALB/C (H-2d) female mice as recipients were grouped by rat: the irradiation group (group A),irradiation transplantation group (group B) and IL-7Rα in the intervention group (group C),each 10.ALL mice were accepted 9 Gy60Co total body irradiation.1×107 bone marrow cells and 2×107 spleen cells of donor C57BL/6 (H-2b) via the tail vein were infused to recipient mice.The signs of the recipient mice,hematopoietic functional recovery and survival time of change,and pathology,chimerism and cytokine levels in checkwere observed.Results Mice in A group after irradiation were gradually death,in group B and group C mice after transplantation had typical aGVHD symptoms,but lighter signs and a longer survival time of Group C than in group B.WBC count in Group C was +14 d (4.53± 0.21) ×109/L,+21 d (3.63±0.06) ×109/L,+28 d (4.31±0.04) ×109/L,was hematopoietic recovery compared with Group B [+14 d (1.81±0.05) ×109/L,+21 d (1.32±0.04) ×109/L,+28 d (1.76±0.04) ×109/L],the difference was statistically significant (t =0.237,0.108,0.359,P < 0.05).The pathological results of liver,spleen,skin histopathology in group C were better than group B.Chimera implants,plasma IL-7 levels after transplant +7 d,concentration was significantly increased.IL-7 concentration in group C was +14 d (194.32±1.02) pg/ml,+21 d (131.63±1.54) pg/ml and in group B was +14 d (330.24±8.08) pg/ml,+21 d (184.09±2.05) pg/ml,the difference was statistically significant (t =1.590,1.285,P <0.05).Conclusion The stable aGVHD mouse model was established.In aGVHD early,plasma IL-7 levels were significantly increased.Exogenous IL-7Rαcan reduce the plasma IL-7 levels,thereby reducing the incidence of aGVHD after allogeneic bone marrow transplantation

  18. Bone marrow mesenchymal stem cells overexpressing human basic fibroblast growth factor increase vasculogenesis in ischemic rats

    Directory of Open Access Journals (Sweden)

    J.C. Zhang

    2014-10-01

    Full Text Available Administration or expression of growth factors, as well as implantation of autologous bone marrow cells, promote in vivo angiogenesis. This study investigated the angiogenic potential of combining both approaches through the allogenic transplantation of bone marrow-derived mesenchymal stem cells (MSCs expressing human basic fibroblast growth factor (hbFGF. After establishing a hind limb ischemia model in Sprague Dawley rats, the animals were randomly divided into four treatment groups: MSCs expressing green fluorescent protein (GFP-MSC, MSCs expressing hbFGF (hbFGF-MSC, MSC controls, and phosphate-buffered saline (PBS controls. After 2 weeks, MSC survival and differentiation, hbFGF and vascular endothelial growth factor (VEGF expression, and microvessel density of ischemic muscles were determined. Stable hbFGF expression was observed in the hbFGF-MSC group after 2 weeks. More hbFGF-MSCs than GFP-MSCs survived and differentiated into vascular endothelial cells (P<0.001; however, their differentiation rates were similar. Moreover, allogenic transplantation of hbFGF-MSCs increased VEGF expression (P=0.008 and microvessel density (P<0.001. Transplantation of hbFGF-expressing MSCs promoted angiogenesis in an in vivo hind limb ischemia model by increasing the survival of transplanted cells that subsequently differentiated into vascular endothelial cells. This study showed the therapeutic potential of combining cell-based therapy with gene therapy to treat ischemic disease.

  19. Bone marrow mesenchymal stem cells overexpressing human basic fibroblast growth factor increase vasculogenesis in ischemic rats

    International Nuclear Information System (INIS)

    Administration or expression of growth factors, as well as implantation of autologous bone marrow cells, promote in vivo angiogenesis. This study investigated the angiogenic potential of combining both approaches through the allogenic transplantation of bone marrow-derived mesenchymal stem cells (MSCs) expressing human basic fibroblast growth factor (hbFGF). After establishing a hind limb ischemia model in Sprague Dawley rats, the animals were randomly divided into four treatment groups: MSCs expressing green fluorescent protein (GFP-MSC), MSCs expressing hbFGF (hbFGF-MSC), MSC controls, and phosphate-buffered saline (PBS) controls. After 2 weeks, MSC survival and differentiation, hbFGF and vascular endothelial growth factor (VEGF) expression, and microvessel density of ischemic muscles were determined. Stable hbFGF expression was observed in the hbFGF-MSC group after 2 weeks. More hbFGF-MSCs than GFP-MSCs survived and differentiated into vascular endothelial cells (P<0.001); however, their differentiation rates were similar. Moreover, allogenic transplantation of hbFGF-MSCs increased VEGF expression (P=0.008) and microvessel density (P<0.001). Transplantation of hbFGF-expressing MSCs promoted angiogenesis in an in vivo hind limb ischemia model by increasing the survival of transplanted cells that subsequently differentiated into vascular endothelial cells. This study showed the therapeutic potential of combining cell-based therapy with gene therapy to treat ischemic disease

  20. Bone marrow mesenchymal stem cells overexpressing human basic fibroblast growth factor increase vasculogenesis in ischemic rats

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, J.C. [Department of Vascular Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou (China); Zheng, G.F. [Department of Vascular Surgery, The People' s Hospital of Ganzhou, Ganzhou (China); Wu, L.; Ou Yang, L.Y.; Li, W.X. [Department of Vascular Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou (China)

    2014-08-08

    Administration or expression of growth factors, as well as implantation of autologous bone marrow cells, promote in vivo angiogenesis. This study investigated the angiogenic potential of combining both approaches through the allogenic transplantation of bone marrow-derived mesenchymal stem cells (MSCs) expressing human basic fibroblast growth factor (hbFGF). After establishing a hind limb ischemia model in Sprague Dawley rats, the animals were randomly divided into four treatment groups: MSCs expressing green fluorescent protein (GFP-MSC), MSCs expressing hbFGF (hbFGF-MSC), MSC controls, and phosphate-buffered saline (PBS) controls. After 2 weeks, MSC survival and differentiation, hbFGF and vascular endothelial growth factor (VEGF) expression, and microvessel density of ischemic muscles were determined. Stable hbFGF expression was observed in the hbFGF-MSC group after 2 weeks. More hbFGF-MSCs than GFP-MSCs survived and differentiated into vascular endothelial cells (P<0.001); however, their differentiation rates were similar. Moreover, allogenic transplantation of hbFGF-MSCs increased VEGF expression (P=0.008) and microvessel density (P<0.001). Transplantation of hbFGF-expressing MSCs promoted angiogenesis in an in vivo hind limb ischemia model by increasing the survival of transplanted cells that subsequently differentiated into vascular endothelial cells. This study showed the therapeutic potential of combining cell-based therapy with gene therapy to treat ischemic disease.

  1. Bone Marrow Adipose Tissue: A New Player in Cancer Metastasis to Bone

    Science.gov (United States)

    Morris, Emma V.; Edwards, Claire M.

    2016-01-01

    The bone marrow is a favored site for a number of cancers, including the hematological malignancy multiple myeloma, and metastasis of breast and prostate cancer. This specialized microenvironment is highly supportive, not only for tumor growth and survival but also for the development of an associated destructive cancer-induced bone disease. The interactions between tumor cells, osteoclasts and osteoblasts are well documented. By contrast, despite occupying a significant proportion of the bone marrow, the importance of bone marrow adipose tissue is only just emerging. The ability of bone marrow adipocytes to regulate skeletal biology and hematopoiesis, combined with their metabolic activity, endocrine functions, and proximity to tumor cells means that they are ideally placed to impact both tumor growth and bone disease. This review discusses the recent advances in our understanding of how marrow adipose tissue contributes to bone metastasis and cancer-induced bone disease.

  2. Allogeneic Bone Marrow Transplant for Inherited Metabolic Disorders

    Science.gov (United States)

    2016-01-21

    Mucopolysaccharidosis; Hurler Syndrome; Hunter Syndrome; Maroteaux-Lamy Syndrome; Sly Syndrome; Alpha Mannosidosis; Fucosidosis; Aspartylglucosaminuria; Adrenoleukodystrophy (ALD); Krabbe Disease; Metachromatic Leukodystrophy (MLD); Sphingolipidoses; Peroxisomal Disorders

  3. Changes in Vertebral Bone Marrow Fat and Bone Mass After Gastric Bypass Surgery: A Pilot Study

    OpenAIRE

    Schafer, AL; Li, X; Schwartz, AV; Tufts, LS; Wheeler, AL; Grunfeld, C; Stewart, L; Rogers, SJ; Carter, JT; Posselt, AM; Black, DM; Shoback, DM

    2015-01-01

    Bone marrow fat may serve a metabolic role distinct from other fat depots, and it may be altered by metabolic conditions including diabetes. Caloric restriction paradoxically increases marrow fat in mice, and women with anorexia nervosa have high marrow fat. The longitudinal effect of weight loss on marrow fat in humans is unknown. We hypothesized that marrow fat increases after Roux-en-Y gastric bypass (RYGB) surgery, as total body fat decreases. In a pilot study of 11 morb...

  4. Bone marrow transplantation and other treatment after radiation injury

    International Nuclear Information System (INIS)

    This review deals mainly with current concepts about bone marrow transplantation as therapy for serious radiation injury. Such injury can be classified according to the following broadly defined dose ranges: (1) the supralethal range, leading mainly to the cerebral and intestinal syndromes; (2) the potentially lethal or therapeutic range which causes the bone marrow syndrome, and (3) the sublethal range which rarely leads to injury requiring therapy. The bone marrow syndrome of man and animals is discussed in detail. The optimal therapy for this syndrome is bone marrow transplantation in conjunction with conventional supportive treatment. The principal complications of such therapy are Graft versus Host Disease and a slow recovery of the recipient's immune system. Concerted research activities in a number of institutions have led to considerable progress in the field of bone marrow transplantation. Improved donor selection, new techniques for stem-cell separation and preservation, as well as effective barrier-nursing and antibiotic decontamination, have made bone marrow transplantation an accepted therapy for marrow depression, including the aplasia caused by excessive exposure to radiation. The review also contains a number of guidelines for the handling of serious radiation accidents. (Auth.)

  5. Potential therapeutic role of cisplatinum in autologous bone marrow transplantation: in vitro eradication of neuroblastoma cells from bone marrow.

    OpenAIRE

    Bettan-Renaud, L.; De Vathaire, F.; Bénard, J.; Morardet, N.; Pauzie, N.; Bayet, S.; Hartmann, O; Parmentier, C.

    1989-01-01

    Cisplatinum may prove to be a valuable agent for the elimination of diseased cells in the bone marrow of patients with neuroblastoma. In this study, we measured the efficacy of cisplatinum on human neuroblastoma cell lines and on normal human bone marrow progenitors, GM-CFC and CFU-F. Data indicate that the therapeutic index of cisplatinum is high. We set up an experimental model consisting of a mixture of human bone marrow and human neuroblastoma cells in order to confirm these preliminary r...

  6. Bone marrow invasion in multiple myeloma and metastatic disease.

    Science.gov (United States)

    Vilanova, J C; Luna, A

    2016-04-01

    Magnetic resonance imaging (MRI) of the spine is the imaging study of choice for the management of bone marrow disease. MRI sequences enable us to integrate structural and functional information for detecting, staging, and monitoring the response the treatment of multiple myeloma and bone metastases in the spine. Whole-body MRI has been incorporated into different guidelines as the technique of choice for managing multiple myeloma and metastatic bone disease. Normal physiological changes in the yellow and red bone marrow represent a challenge in analyses to differentiate clinically significant findings from those that are not clinically significant. This article describes the findings for normal bone marrow, variants, and invasive processes in multiple myeloma and bone metastases.

  7. Aspergillus antigen testing in bone marrow transplant recipients

    OpenAIRE

    Williamson, E; Oliver, D.; Johnson, E.; Foot, A.; D. Marks; Warnock, D.

    2000-01-01

    Aims—To assess the clinical usefulness of a commercial aspergillus antigen enzyme linked immunosorbent assay (ELISA) in the diagnosis of invasive aspergillosis (IA) in bone marrow transplant recipients, and to compare it with a commercial latex agglutination (LA) test.

  8. Bone marrow hypoplasia in a cat treated with griseofulvin.

    Science.gov (United States)

    Rottman, J B; English, R V; Breitschwerdt, E B; Duncan, D E

    1991-02-01

    Three weeks after initiation of griseofulvin treatment for dermatophytosis (40 mg/kg of body weight, q 12 h), an 8-yr-old domestic shorthair cat developed depression, vomiting, and pyrexia. Abnormalities found during physical examination included bilateral mydriasis, visual impairment, grade-II/V systolic murmur and multiple areas of alopecia. The cat was pancytopenic; serum biochemical abnormalities included hyperbilirubinemia, hyperglycemia, hyponatremia, and hypokalemia, and urinalysis revealed proteinuria, glycosuria, and bilirubinuria. Examination of a bone marrow aspirate revealed profound hypoplasia of all precursors. Griseofulvin toxicosis was diagnosed on the basis of the temporal relationship of drug administration with onset of clinical, hematologic, and biochemical abnormalities and failure to identify an infective or neoplastic cause for the bone marrow hypoplasia. The condition was refractory to treatment and the cat was euthanatized. Pathologic changes in the bone marrow were consistent with severe hypoplasia of all bone marrow precursors.

  9. Increased bone marrow blood flow in polycythemia vera

    Energy Technology Data Exchange (ETDEWEB)

    Lathinen, R.; Lathinen, T.; Hyoedynmaa, S.

    1983-01-01

    Bone marrow blood flow was measured in polycythemia vera, in compensatory and in relative polycythemia with a /sup 133/Xe washout method. In the treated polycythemia vera bone marrow blood flow was significantly increased compared with the age-matched controls. The fraction of blood flow entering the bone and flowing through the hematopoietic marrow was markedly increased in both the untreated and the treated polycythemia vera. Although the number of observations in compensatory and relative polycythemia was small, the results suggest that bone marrow blood flow is not markedly increased in these diseases. The results also suggest that in older patients the simple /sup 133/Xe method may support the diagnosis of polycythemia vera.

  10. Distinct bone marrow blood vessels differentially regulate haematopoiesis.

    Science.gov (United States)

    Itkin, Tomer; Gur-Cohen, Shiri; Spencer, Joel A; Schajnovitz, Amir; Ramasamy, Saravana K; Kusumbe, Anjali P; Ledergor, Guy; Jung, Yookyung; Milo, Idan; Poulos, Michael G; Kalinkovich, Alexander; Ludin, Aya; Kollet, Orit; Shakhar, Guy; Butler, Jason M; Rafii, Shahin; Adams, Ralf H; Scadden, David T; Lin, Charles P; Lapidot, Tsvee

    2016-04-21

    Bone marrow endothelial cells (BMECs) form a network of blood vessels that regulate both leukocyte trafficking and haematopoietic stem and progenitor cell (HSPC) maintenance. However, it is not clear how BMECs balance these dual roles, and whether these events occur at the same vascular site. We found that mammalian bone marrow stem cell maintenance and leukocyte trafficking are regulated by distinct blood vessel types with different permeability properties. Less permeable arterial blood vessels maintain haematopoietic stem cells in a low reactive oxygen species (ROS) state, whereas the more permeable sinusoids promote HSPC activation and are the exclusive site for immature and mature leukocyte trafficking to and from the bone marrow. A functional consequence of high permeability of blood vessels is that exposure to blood plasma increases bone marrow HSPC ROS levels, augmenting their migration and differentiation, while compromising their long-term repopulation and survival. These findings may have relevance for clinical haematopoietic stem cell transplantation and mobilization protocols. PMID:27074509

  11. Bone Marrow Diseases - Multiple Languages: MedlinePlus

    Science.gov (United States)

    ... Supplements Videos & Tools You Are Here: Home → Multiple Languages → All Health Topics → Bone Marrow Diseases URL of this page: https://medlineplus.gov/languages/bonemarrowdiseases.html Other topics A-Z A B ...

  12. Bone marrow cells contribute to tissue regeneration in the intestine and skin.

    OpenAIRE

    Brittan, M

    2005-01-01

    Adult bone marrow contains progenitor cells that can extricate themselves from their bone marrow cavity niche, and engraft within foreign tissues, whereupon they produce specific differentiated adult lineages. Bone marrow engraftment is upregulated with increasing regenerative pressure, which has triggered speculation as to the therapeutic potential of bone marrow cells. In this thesis, I describe for the first time, that transplanted adult bone marrow cells engraft within the intestines of m...

  13. Effect of 910-MHz Electromagnetic Field on Rat Bone Marrow

    OpenAIRE

    George Demsia; Dimitris Vlastos; Demetrios P. Matthopoulos

    2004-01-01

    Aiming to investigate the possibility of electromagnetic fields (EMF) developed by nonionizing radiation to be a noxious agent capable of inducing genotoxicity to humans, in the current study we have investigated the effect of 910-MHz EMF in rat bone marrow. Rats were exposed daily for 2 h over a period of 30 consecutive days. Studying bone marrow smears from EMF-exposed and sham-exposed animals, we observed an almost threefold increase of micronuclei (MN) in polychromatic erythrocytes (PCEs)...

  14. Utility of bone marrow aspiration in extrapulmonary tuberculosis

    OpenAIRE

    Singh, H.; R Sen; Singh, S.; J. P. Malik; S. B. Siwach; R. Rajput

    2002-01-01

    This study was undertaken to look for evidence of acid fast bacilli (AFB) in bone marrow (BM) in patients of extrapulmonary tuberculosis. Fifty cases suspected of extrapulmonary tuberculosis underwent bone marrow aspiration from sternum/illiac crest and were put on a therapeutic trial of antituberculosis therapy. All cases taken in the study responded to the therapy. The pattern of involvement were – abdominal (20), CNS (19), pericardial involvement (5), cervical lymphadenopathy (2), PUO (2),...

  15. A marker chromosome in post-transplant bone marrow

    OpenAIRE

    Morsberger, Laura; Powell, Kerry; Ning, Yi

    2016-01-01

    Detection of small supernumerary marker chromosomes in karyotype analysis represents a diagnostic challenge. While such markers are usually detected during cytogenetic studies of constitutional chromosome abnormalities, they have also been found in specimens submitted from patients with acquired malignancies. We report here the detection of a marker chromosome in a bone marrow specimen from a patient who received a bone marrow transplantation. We discuss the importance of proper characterizat...

  16. Characterization of murine macrophages from bone marrow, spleen and peritoneum

    OpenAIRE

    Wang Changqi; Yu Xiao; Cao Qi; Wang Ya; Zheng Guoping; Tan Thian Kui; Zhao Hong; Zhao Ye; Wang Yiping; Harris David CH

    2013-01-01

    Abstract Background Macrophages have heterogeneous phenotypes and complex functions within both innate and adaptive immune responses. To date, most experimental studies have been performed on macrophages derived from bone marrow, spleen and peritoneum. However, differences among macrophages from these particular sources remain unclear. In this study, the features of murine macrophages from bone marrow, spleen and peritoneum were compared. Results We found that peritoneal macrophages (PMs) app...

  17. Etiological Profile of Plasmacytosis on Bone Marrow Aspirates

    Directory of Open Access Journals (Sweden)

    Monika Gupta

    2016-03-01

    Full Text Available Objective: In recent years, during routine examination of bone marrow aspirates, an increased plasma cell per­centage has been noted in a good number of cases which included both neoplastic and non-neoplastic diseases. An attempt has been made to observe the spectra of condi­tions with plasmacytosis in bone marrow. Methods: The present study was conducted in the de­partment of pathology over a period of one year. A total of 114 bone marrow aspirates that showed increased plas­ma cells (>3.5% constitute the study material. A detailed relevant clinical examination followed by complete blood count, peripheral smear examination and bone marrow aspiration was done in all cases. Results: There was slight female predominance with male to female ratio of 1:1.1. The majority of patients were in 4th decade. The plasma cell concentration ranged from 5% to 36%. As far as the etiology is concerned, 96 cases (84.2% were non-neoplastic and 18 cases (15.7% had neoplastic etiology. Conclusion: Bone marrow plasmacytosis can present as diagnostic dilemma and some time can be challenging to differentiate reactive from neoplastic condition as there is an overlap both in counts and morphology. Each case with plasmacytosis especially in the overlap range requires complete clinical evaluation, individualized investigations and more specific tests like immunoelectrophoresis and bone marrow biopsy with immunohistochemistry to arrive at a final diagnosis for patient management.

  18. MRI evaluation of rabbit bone marrow after acute irradiation

    International Nuclear Information System (INIS)

    Background: magnetic resonance imaging is a safe modality and useful in characterizing normal and abnormal bone marrow. magnetic resonance imaging also presents a more global view of bone marrow than biopsy; therefore , it may provide a better understanding of hematologic disorders. The purpose of this study was to monitor radiation-induced alterations of bone marrow in acute phase of irradiation (1-10 day after total body irradiation with conventional magnetic resonance imaging. Materials and methods: twelve New Zealand adult male white rabbits (10 for total body irradiation and 2 as controls) were irradiated to 6 Gy gamma rays. magnetic resonance imaging was performed for each rabbit femoral marrow and marginal muscles around femur region (as internal control) using T1-weighted (W) and SPIR (TR/TE 631/15) techniques before and after (24h, 48h, 72h, 5d, 10d) post total body irradiation. Results: the results were expressed as MR signal ratio (mean MR signal of femur/mean MR signal of muscle). The bone marrow MR- signal intensity values were subsequently compared to the histologic values of bone marrow cellularity, edema and hemorrhage. Values of T1-signal intensity of bone marrow for 1 to 5 days after irradiation was smaller than those the values for before irradiation data (P< 0.006) SPIR-signal intensity values of bone marrow in 3, 5 and 10 days were less than values for before irradiation (P<0.001). Since signal intensity depends to edema and hemorrhage the high correlation between cellularity and T1-signal intensity (r=0.725, P= 0.018) or SPIR-SI (r= 0.814, P 0.004) was not found. Conclusion: This study indicated that radiation-induced modification of bone marrow-signal intensity is tightly linked to the parameters like decline of all hematopoietic cell lines, edema and hemorrhage. IT was concluded that magnetic resonance imaging can distinguish normal from irradiated bone marrow so that radiation-induced alterations in bone marrow could be assessed with

  19. Diffuse Hypermetabolism at Bone Marrow in F-18 FDG PET/CT: Correlation with Bone Marrow Biopsy and Complete Blood Cell Counts

    Energy Technology Data Exchange (ETDEWEB)

    Kang, Yun Hee; Lim, Seok Tae; Jeong, Young Jin; Kim, Dong Wook; Jeong, Hwan Jeong; Sohn, Myung Hee [Chonbuk National University Medical School, Jeonju (Korea, Republic of)

    2009-02-15

    Increased FDG uptake in the bone marrow has been reported in patients taking erythropoietin or granulocyte-colony stimulating factor (G-CSF). The aim of this study is to investigate the correlation between F-18 FDG uptake in the bone marrow and bone marrow finding, hematological parameters. Twenty patients who had diffuse FDG uptake at the bone marrow and received hematological examinations, bone marrow biopsy within 10 days before or after PET/CT were enrolled in this study. Among them, 11 patients were excluded; 4 patients received G-CSF or erythropoietin before PET/CT. Seven patients showed definite pathology in a bone marrow biopsy. The parameters included the measurement of WBC, hemoglobin, platelet and cellularity of the bone marrow. Bone marrow FDG uptake was correlated with a low hemoglobin but not WBC, platelet. Histopathologic findings in marrow biopsies were various: normal finding (n=3), hyperplasia of granulocytic cells (n=2), eosinophilic hyperplasia (n=1), reactive lymphoid nodules (n=1), hypercelluar marrow (n=1), hypocelluar marrow (n=1). All patients except two, showed normal marrow celluarity. FDG uptake by bone marrow correlated with anemia but not WBC, platelet, bone marrow cellularity.

  20. Total body irradiation in bone marrow transplantation

    International Nuclear Information System (INIS)

    Total body irradiation was used in 22 patients as part of their conditioning regimen for bone marrow transplantation. Nine patients with acute leukemia received 1000 cGy TBI in addition with chemotherapy. None of them survived and the main cause of death was interstitial pneumonitis (50%). 4 patients received 1000 cGy with a lung shielding of 500 cGy. Two patients with acute leukemia died of leukemia and sepsis, two patients had aplastic anemia, one is surviving, the other died of severe GVHD and infectious complications. Nine patients with severe aplastic anemia strongly immunized by previous blood transfusions received 800 cGy TBI with a lung shielding of 400 cGy. No rejection was observed and 7 patients (63%) are currently alive. One patient died of interstitial pneumonitis probably related to CMV infection, one of subacute necrotizing hepatitis, two of severe acute GVHD. It is concluded from this study that TBI remains the best immunosuppressive conditioning regimen even in strongly immunized patients. It may be a contributing factor of the incidence and severity of interstitial pneumonitis. A reduction of the dose of the lung to 400-500 cGy seems to decrease the severity of this complication

  1. Pulmonary fungal infections after bone marrow transplantation

    International Nuclear Information System (INIS)

    Of 319 pediatric patients treated with bone marrow transplantation (BMT) during a 10-year period, 27 developed pulmonary fungal infections (PFI). Only 2 patients (7%) survived. Twenty-three patients (85%) had been treated with systemic anti-fungal therapy immediately before or at the time of diagnosis. Nineteen patients (70%) were neutropenic, and 4 of the 8 patients who were not neutropenic were being treated with systemic steroids for graft vs. host disease (GVHD). Seven patients (26%) died within 7 days of diagnosis. The diagnosis was made ante-mortem in 9 patients (33%). Radiographic abnormalities were variable. At the onset of chest X-ray (CXR) change, the pulmonary infiltrates were unilateral in 14 patients (52%) and, at diagnosis, bilateral in 18 (66%). At diagnosis the infiltrates were interstitial in 3 patients (11%), alveolar in 20 (74%) and mixed in 4 (15%). Six patients (22%) developed cavitary lesions. The infecting agents were Aspergillus in 21 patients (78%), Candida in 7 (26%), Mucormycosis in 3 (11%), and Fusarium in 1 (4%). Five patients (19%) had mixed fungal infections and 7 (26%) had concurrent cytomegalovirus (CMV) pulmonary infections. Although the radiographic changes are often nonspecific in PFI, alveolar or nodular infiltrates in neutropenic patients or in those being treated for GVHD should strongly suggest a fungal etiology. (orig.)

  2. The role of bone marrow-derived cells during the bone healing process in the GFP mouse bone marrow transplantation model.

    Science.gov (United States)

    Tsujigiwa, Hidetsugu; Hirata, Yasuhisa; Katase, Naoki; Buery, Rosario Rivera; Tamamura, Ryo; Ito, Satoshi; Takagi, Shin; Iida, Seiji; Nagatsuka, Hitoshi

    2013-03-01

    Bone healing is a complex and multistep process in which the origin of the cells participating in bone repair is still unknown. The involvement of bone marrow-derived cells in tissue repair has been the subject of recent studies. In the present study, bone marrow-derived cells in bone healing were traced using the GFP bone marrow transplantation model. Bone marrow cells from C57BL/6-Tg (CAG-EGFP) were transplanted into C57BL/6 J wild mice. After transplantation, bone injury was created using a 1.0-mm drill. Bone healing was histologically assessed at 3, 7, 14, and 28 postoperative days. Immunohistochemistry for GFP; double-fluorescent immunohistochemistry for GFP-F4/80, GFP-CD34, and GFP-osteocalcin; and double-staining for GFP and tartrate-resistant acid phosphatase were performed. Bone marrow transplantation successfully replaced the hematopoietic cells into GFP-positive donor cells. Immunohistochemical analyses revealed that osteoblasts or osteocytes in the repair stage were GFP-negative, whereas osteoclasts in the repair and remodeling stages and hematopoietic cells were GFP-positive. The results indicated that bone marrow-derived cells might not differentiate into osteoblasts. The role of bone marrow-derived cells might be limited to adjustment of the microenvironment by differentiating into inflammatory cells, osteoclasts, or endothelial cells in immature blood vessels.

  3. Transplantation of bone marrow in victims of the Chernobyl accident

    International Nuclear Information System (INIS)

    Bone marrow transplants were carried out in 13 patients suffering from acute irradiation sickness after the Chernobyl accident. Only blood relations of the patients were used as donors. The number of bone marrow cells transplanted must be at least 2x108 per kilogram of recipient weight. The experience of the present bone marrow transplants has shown defects in clinical methods of early diagnosis (during the first 7-10 days after exposure) of acute radiation injuries to the skin, intestine and lungs which are incompatible with survival. Another problem with bone marrow transplants for patients suffering from acute radiation sickness is to determine to what extent the depression of marrow activity is irreversible. Spontaneous regeneration of myelopoiesis was observed 22-30 days after exposure in patients who had received doses of 7-9 Gy. A lapse of this order before the onset regeneration is therefore, in principle, compatible with survival under the conditions of modern support therapy. Thus, the belief that prolonged acute radiation pancytopenia which is incompatible with survival starts already at doses of 5-6 Gy is evidently incorrect, at least for the relatively low exposure dose rates experienced by this group of victims. The results of bone marrow transplants in victims of the Chernobyl accident suggest that, in future, the following rules should be observed in transplanting human bone marrow to victims of acute radiation sickness: (1) Only HLA-identical transplants should be carried out; and (2) HLA-identical bone marrow transplants should be carried out only in patients who have received whole body doses of gamma radiation of 9.0 Gy or more. (author). 1 tab

  4. Partitioning of bone marrow into stem cell regulatory domains.

    OpenAIRE

    Maloney, M A; Lamela, R A; Banda, M J; Patt, H M

    1982-01-01

    To examine the hypothesis that bone marrow consists of discrete stem cell regulatory volumes or domains, we studied spleen colony-forming unit (CFU-S) population growth kinetics in unirradiated WBB6F1-W/Wv mice receiving various doses of +/+ bone marrow cells. Assay of femoral marrow CFU-S content in the eight recipient dose groups revealed a family of growth curves having an initial dose-independent exponential phase and a subsequent dose-dependent deceleration phase. CFU-S content at the gr...

  5. The production of IL-1, IL-3, CSA by bone marrow nuclears during bone marrow haemopoiesis after lethal irradiation and syngenic bone marrow transplantation

    International Nuclear Information System (INIS)

    The production of haemopoietic factors (IL-1, IL-3, CSA) by adherent and unadherent cells of lethally irradiate CBA mice bone marrow and after syngenic myelokaryocyte transplantation was studied. Radioresistant myelokaryocytes capable to produce haemopoetic factors IL-1, CSA as early as 24 hr after irradiation were found in adherent cell fraction. The synthesis of humoral factors (IL-3, CSA) by unadherent bone marrow elements was realised in a late of experiment (3-6 days) that was connected with forming of functionally valuable cell forms from transplanted or viable stem cells

  6. Clonal Characterization of Bone Marrow Derived Stem Cells and Their Application for Bone Regeneration

    OpenAIRE

    Xiao, Yin; Mareddy, Shobha; Crawford, Ross

    2010-01-01

    Tissue engineering allows the design of functionally active cells within supportive bio-scaffolds to promote the development of new tissues such as cartilage and bone for the restoration of pathologically altered tissues. However, all bone tissue engineering applications are limited by a shortage of stem cells. The adult bone marrow stroma contains a subset of nonhematopoietic cells referred to as bone marrow mesenchymal stem cells (BMSCs). BMSCs are of interest because they are easily isolat...

  7. Effects of Platelet Factor 4 on Expression of Bone Marrow Heparan Sulfate in Syngenic Bone Marrow Transplantation Mice

    Institute of Scientific and Technical Information of China (English)

    孟凡凯; 孙汉英; 刘文励; 袁慧玲; 徐惠珍; 孙岚; 周银莉; 任天华

    2002-01-01

    Summary: To explore the effects of platelet factor 4(PF4) on hematopoietic reconstitution and its mechanism in syngenic bone marrow transplantation (BMT). The syngenic BMT mice models were established. 20 and 26 h before irradiation, the mice were injected 20 μg/kg PF4 or PBS twice into abdominal cavity, then the donor bone marrow nuclear cells (BMNC) were transplanted. On the 7th day, spleen clone forming units (CFU-S) were counted. On the 7th, 14th and 21st day after BMT, the BMNC and megakaryoryocytes in bone marrow tissue were counted and the percentage of hematopoietic tissue and expression level of heparan sulfate in bone marrow tissue were assessed. In PF4-treated groups, the CFU-S counts on the 7th day were higher than those in BMT groups after BMT. The BMNC and megakaryoryocyte counts and the percentage of hematopoietic tissue and heparan sulfate expression level were higher than those in BMT group on the 7th, 14th and 21st day after BMT (P<0. 01 or P<0. 05). PF4 could accelerate hematopoietic reconstitution of syngenic bone marrow transplantation. The promotion of the heparan sulfate expression in bone marrow may be one of mechanisms of PF4.

  8. Scintigraphy of bone marrow for neoplastic lesions in breast carcinoma

    International Nuclear Information System (INIS)

    Bone marrow scintigraphy was performed in 259 patients including 124 females with breast carcinoma using the technique of 99mTc-labelled colloid retention by phagocytizing cells, thus visualizing the reticuloendothelial component of the bone marrow. The objective was to early diagnose hematogenic metastases. In five patients, simultaneous skeleton scintiscanning was not performed. The technique was shown to play a role in early diagnosis of bone metastases and of bone lesions in less usual loci and especially in the differential diagnosis of nonmalignant bone disease, such as arthrosis. Its constraints include an intensive cumulation of the radiopharmaceutical in the liver and the splenic reticuloendothelial systems, which precludes the assessment of the bone marrow in the adjacent areas; further a difficult interpretation of the results, high cost and long time of examination. It has no role in patients with disseminated forms of the disease with multiple bone metastases already shown by scintigraphy. Bone marrow scintigraphy alone is not a reliable method for early diagnosis of breast carcinoma (L.O.)

  9. Quantitative magnetic resonance imaging in autologous bone marrow transplantation for Hodgkin's disease.

    OpenAIRE

    Smith, S. R.; Williams, C E; Edwards, R H; Davies, J M

    1989-01-01

    Fifteen consecutive patients with refractory or relapsed Hodgkin's disease (HD) referred for autologous bone marrow transplantation (ABMT) underwent quantitative magnetic resonance (MR) studies of the lumbar vertebral bone marrow. Markedly elevated lumbar vertebral marrow T1 values suggestive of bone marrow involvement with HD were seen in four patients, two of whom had no evidence of HD on bilateral iliac crest bone marrow biopsy. Serial studies showed normalisation of T1 values in the post-...

  10. On the Feasibility of Utilizing Allogeneic Bone Blocks for Atrophic Maxillary Augmentation

    Directory of Open Access Journals (Sweden)

    Alberto Monje

    2014-01-01

    Full Text Available Purpose. This systematic review was aimed at assessing the feasibility by means of survival rate, histologic analysis, and causes of failure of allogeneic block grafts for augmenting the atrophic maxilla. Material and Methods. A literature search was conducted by one reviewer in several databases. Articles were included in this systematic review if they were human clinical trials in which outcomes of allogeneic bone block grafts were studied by means of survival rate. In addition other factors were extracted in order to assess their influence upon graft failure. Results. Fifteen articles fulfilled the inclusion criteria and subsequently were analyzed in this systematic review. A total of 361 block grafts could be followed 4 to 9 months after the surgery, of which 9 (2.4% failed within 1 month to 2 months after the surgery. Additionally, a weighed mean 4.79 mm (95% CI: 4.51–5.08 horizontal bone gain was computed from 119 grafted sites in 5 studies. Regarding implant cumulative survival rate, the weighed mean was 96.9% (95% CI: 92.8–98.7%, computed from 228 implants over a mean follow-up period of 23.9 months. Histologic analysis showed that allogeneic block grafts behave differently in the early stages of healing when compared to autogenous block grafts. Conclusion. Atrophied maxillary reconstruction with allogeneic bone block grafts represents a reliable option as shown by low block graft failure rate, minimal resorption, and high implant survival rate.

  11. Autologous Bone Marrow Stem Cells combined with Allograft Cancellous Bone in Treatment of Nonunion

    OpenAIRE

    Le Thua Trung Hau; Duc Phu Bui; Nguyen Duy Thang; Pham Dang Nhat; Le Quy Bao; Nguyen Phan Huy; Tran Ngoc Vu; Le Phuoc Quang; Boeckx willy Denis; Mey Albert De

    2015-01-01

    Autologous cancellous bone graft is currently used as a gold standard method for treatment of bone nonunion. However, there is a limit to the amount of autologous cancellous bone that can be harvested and the donor site morbidity presents a major disadvantage to autologous bone grafting. Embedding viable cells within biological scaffolds appears to be extremely promising. The purpose of this study was to assess the outcome of autologous bone marrow stem cells combined with a cancellous bone a...

  12. A Survey of Bacterial Infections in Bone Marrow Transplant Recipients

    Directory of Open Access Journals (Sweden)

    MH Shirazi

    2007-09-01

    Full Text Available "nBackground: Bone marrow transplant (BMT recipients are prone to bacterial, viral and fungal infections. Bacterial infec­tion is considered as one of the common and serious complications in bone marrow transplant recipients. The aim of this study was to determine the rate of bacterial infections in bone marrow transplant recipients."nMethods: Fifty-two blood and 25 catheter samples were obtained from 23 patients who were hospitalized in bone marrow trans­plantation unit in Shariati Hospital in Tehran. Bacterial strains were isolated and identified by the standard conven­tional bacteriological methods. Antimicrobial susceptibility was performed according to the guidelines from NCCLS using 18 different antibiotics."nResults:  The strains of Staphylococci, Streptococcus viridans, Pseudomonas aeruginosa and Escherichia coli were isolated from 8(66.7%, 1(8.3%, 2 (16.7% and the 1(8.3% cases, respectively."nConclusion: Current study indicated that the bacterial infections particularly those caused by the Gram-positive cocci were still as important problem in bone marrow transplant.

  13. Pulmonary Embolization of Fat and Bone Marrow in Cynomolgus Macaques (Macaca fascicularis)

    OpenAIRE

    Fong, Derek L; Murnane, Robert D; Hotchkiss, Charlotte E; Green, Damian J.; Hukkanen, Renee R.

    2011-01-01

    Fat embolization (FE), the introduction of bone marrow elements into circulation, is a known complication of bone fractures. Although FE has been described in other animal models, this study represents the first reported cases of FE and bone marrow embolism in nonhuman primates. Histopathologic findings from cynomolgus macaques (Macaca fascicularis) indicated that in all 5 cases, fat and bone marrow embolization occurred subsequent to multiple bone marrow biopsies. In the most severe case, ex...

  14. Failure to Generate Bone Marrow Adipocytes Does Not Protect Mice from Ovariectomy-Induced Osteopenia

    OpenAIRE

    Iwaniec, Urszula T; Turner, Russell T.

    2012-01-01

    A reciprocal association between bone marrow fat and bone mass has been reported in ovariectomized rodents, suggesting that bone marrow adipogenesis has a negative effect on bone growth and turnover balance. Mice with loss of function mutations in kit receptor (kitW/W-v) have no bone marrow adipocytes in tibia or lumbar vertebra. We therefore tested the hypothesis that marrow fat contributes to development of osteopenia by comparing the skeletal response to ovariectomy (ovx) in growing wild t...

  15. Regulatory T cells in the bone marrow microenvironment in patients with prostate cancer

    OpenAIRE

    Zhao, Ende; Wang, Lin; Dai, Jinlu; Kryczek, Ilona; Wei, Shuang; Vatan, Linda; Altuwaijri, Saleh; Sparwasser, Tim; Wang, Guobin; Evan T. Keller; Zou, Weiping

    2012-01-01

    Human prostate cancer frequently metastasizes to bone marrow. What defines the cellular and molecular predilection for prostate cancer to metastasize to bone marrow is not well understood. CD4+CD25+ regulatory T (Treg) cells contribute to self-tolerance and tumor immune pathology. We now show that functional Treg cells are increased in the bone marrow microenvironment in prostate cancer patients with bone metastasis, and that CXCR4/CXCL12 signaling pathway contributes to Treg cell bone marrow...

  16. Extramedullary Relapse Following Total Marrow and Lymphoid Irradiation in Patients Undergoing Allogeneic Hematopoietic Cell Transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Ji Hyun [Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California (United States); Stein, Anthony [Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, California (United States); Tsai, Nicole [Department of Biostatistics, City of Hope National Medical Center, Duarte, California (United States); Schultheiss, Timothy E. [Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California (United States); Palmer, Joycelynne [Department of Biostatistics, City of Hope National Medical Center, Duarte, California (United States); Liu, An [Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California (United States); Rosenthal, Joseph [Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, California (United States); Department of Pediatrics, City of Hope National Medical Center, Duarte, California (United States); Forman, Stephen J. [Department of Hematology/Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, California (United States); Wong, Jeffrey Y.C., E-mail: jwong@coh.org [Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California (United States)

    2014-05-01

    Purpose: Approximately 5% to 20% of patients who undergo total body irradiation (TBI) in preparation for hematopoietic cell transplantation (HCT) can develop extramedullary (EM) relapse. Whereas total marrow and lymphoid irradiation (TMLI) provides a more conformally targeted radiation therapy for patients, organ sparing has the potential to place the patient at a higher risk for EM relapse than TBI. This study evaluated EM relapse in patients treated with TMLI at our institution. Methods and Materials: Patients eligible for analysis had been enrolled in 1 of 3 prospective TMLI trials between 2006 and 2012. The TMLI targeted bones, major lymph node chains, liver, spleen, testes, and brain, using image-guided tomotherapy with total dose ranging from 12 to 15 Gy. Results: A total of 101 patients with a median age of 47 years were studied. The median follow-up was 12.8 months. Incidence of EM relapse and bone marrow (BM) relapse were 12.9% and 25.7%, respectively. Of the 13 patients who had EM relapse, 4 also had BM relapse, and 7 had EM disease prior to HCT. There were a total of 19 EM relapse sites as the site of initial recurrence: 11 soft tissue, 6 lymph node, 2 skin. Nine of these sites were within the target region and received ≥12 Gy. Ten initial EM relapse sites were outside of the target region: 5 sites received 10.1 to 11.4 Gy while 5 sites received <10 Gy. Pretransplantation EM was the only significant predictor of subsequent EM relapse. The cumulative incidence of EM relapse was 4% at 1 year and 11.4% at 2 years. Conclusions: EM relapse incidence was as frequent in regions receiving ≥10 Gy as those receiving <10 Gy. EM relapse rates following TMLI that included HCT regimens were comparable to published results with regimens including TBI and suggest that TMLI is not associated with an increased EM relapse risk.

  17. Rhinosinusitis in autologous and allogeneic bone marrow transplantation: a retrospective study on the performance of imaging studies on severity and prognostic evaluation Rinossinusite em transplante de células-tronco hematopoéticas autólogo e alogênico: um estudo retrospectivo sobre o desempenho de estudos de imagem na avaliação de severidade e prognóstico

    Directory of Open Access Journals (Sweden)

    Leo Sekine

    2010-02-01

    Full Text Available The objective of this work was to evaluate the diagnostic and prognostic performance of a traditional imaging staging system for rhinosinusitis in the bone marrow transplantation (BMT scenario. A retrospective cohort study was carried out at a bone marrow transplantation referral center involving subjects who underwent allogeneic or autologous BMT from September 1st 2005 to September 31st 2007 and later evolved with rhinosinusitis during the BMT inpatient period. Patients who had a previous history of sinusal disease or otolaryngologic surgery were excluded from the study. Data concerning mortality, the treatment of rhinosinusitis and BMT outcomes were extracted from medical files. The collected parameters were compared to the Lund-Mackay tomographic staging system score which was calculated based on available tomography films of each patient. A total of 85 BMT were performed and 23 allogeneic and 14 autologous (43.5% BMT patients evolved with rhinosinusitis during transplantation. A significant association with LMS was found for the absolute neutrophil count (ANC, with a higher ANC (>500/mm3 correlating with a higher LMS (Mean LMS for lower ANC 6.08 and higher ANC 9.71 points, pO objetivo deste trabalho foi avaliar o desempenho diagnóstico e prognóstico de um escore de estadiamento de rinossinusite (RS por tomografia em pacientes submetidos a transplante de medula óssea (TMO. Realizou-se um estudo de coorte retrospectivo de pacientes submetidos a transplante de medula óssea (autólogo e alogênico de 1º de setembro de 2005 a 31 de setembro de 2007 que desenvolveram RS durante o período de internação do transplante. Pacientes com história prévia de doença sinusal ou cirurgia otorrinolaringológica foram excluídos do estudo. Dados relacionados à mortalidade, resolução da RS e desfechos do TMO foram extraídos do prontuário médico. Os parâmetros coletados foram correlacionados com o escore de estadiamento de Lund-Mackay (ELM, que

  18. Characterization of Bone Marrow Mononuclear Cells on Biomaterials for Bone Tissue Engineering In Vitro

    OpenAIRE

    Dirk Henrich; René Verboket; Alexander Schaible; Kerstin Kontradowitz; Elsie Oppermann; Brune, Jan C; Christoph Nau; Simon Meier; Halvard Bonig; Ingo Marzi; Caroline Seebach

    2015-01-01

    Bone marrow mononuclear cells (BMCs) are suitable for bone tissue engineering. Comparative data regarding the needs of BMC for the adhesion on biomaterials and biocompatibility to various biomaterials are lacking to a large extent. Therefore, we evaluated whether a surface coating would enhance BMC adhesion and analyze the biocompatibility of three different kinds of biomaterials. BMCs were purified from human bone marrow aspirate samples. Beta tricalcium phosphate (β-TCP, without coating or ...

  19. Specific absorbed fraction in bone tissue and bone marrow resulting from photons distributed in the skeleton

    International Nuclear Information System (INIS)

    The computer code 'ALGAM: Monte Carlo Estimation of Internal Dose from Gamma -ray Sources in a Phanton Man' only provides for an average dose to bone marrow resulting from a photon source distributed in the human body. Since there is no realistic model for the separation of these doses in the present phantom, some modifications were performed in the ALGAM code in order to introduce an heterogeneous skeleton and through this new model it was possible to make the estimation of dose in bone marrow. The specific absorbed fraction resulting from running the new program for 12 monoenergetic photon sources distributed in three source organs - skeleton, red marrow and yellow marrow is presented. The results obtained show that for low photon energies, the old model overestimates the specific absorbed fraction in bone marrow up to a factor of 4; while in bone, it underestimates the specific absorbed fractions up to a factor of 1.6. (Author)

  20. Bone marrow edema syndrome in postpartal women: treatment with iloprost.

    Science.gov (United States)

    Aigner, Nicholas; Meizer, Roland; Meraner, Dominik; Becker, Stephan; Meizer, Elizabeth; Landsiedl, Franz

    2009-04-01

    Bone marrow edema syndrome of the femoral head in pregnant women is a rare disease resulting in disabling coxalgia, beginning in the last 3 months of pregnancy and persisting for several months after parturition. The parenteral administration of the vasoactive drug iloprost constitutes a new approach to the treatment of painful bone marrow edema syndrome of the hip of pregnant women. Six postpartal women (8 hips) with bone marrow edema syndrome of the femoral head were treated with iloprost followed by 3 weeks of partial weight-bearing. Relief from pain, restoration of functional capacity, and normalization of the MRI signal pattern were rapidly achieved, thus avoiding the need for surgical intervention. As the substance is contraindicated in pregnancy, therapy may begin only some days after parturition, with a short discontinuation in breastfeeding.

  1. Allogeneic compact bone-derived mesenchymal stem cell transplantation increases survival of mice exposed to lethal total body irradiation: a potential immunological mechanism

    Institute of Scientific and Technical Information of China (English)

    Qiao Shukai; Ren Hanyun; Shi Yongjin; Liu Wei

    2014-01-01

    Background Radiation-induced injury after accidental or therapeutic total body exposure to ionizing radiation has serious pathophysiological consequences,and currently no effective therapy exists.This study was designed to investigate whether transplantation of allogeneic murine compact bone derived-mesenchymal stem cells (CB-MSCs) could improve the survival of mice exposed to lethal dosage total body irradiation (TBI),and to explore the potential immunoprotective role of MSCs.Methods BALB/c mice were treated with 8 Gy TBI,and then some were administered CB-MSCs isolated from C57BL/6 mice.Survival rates and body weight were analyzed for 14 days post-irradiation.At three days post-irradiation,we evaluated IFN-Y and IL-4 concentrations; CD4+CD25+Foxp3+ regulatory T cell (Treg) percentage; CXCR3,CCR5,and CCR7 expressions on CD3+T cells; and splenocyte T-bet and GATA-3 mRNA levels.CB-MSC effects on bone marrow hemopoiesis were assessed via colony-forming unit granulocyte/macrophage (CFU-GM) assay.Results After lethal TBI,compared to non-transplanted mice,CB-MSC-transplanted mice exhibited significantly increased survival,body weight,and CFU-GM counts of bone marrow cells (P<0.05),as well as higher Treg percentages,reduced IFN-Y,CXCR3 and CCR5 down-regulation,and CCR7 up-regulation.CB-MSC transplantation suppressed Th1 immunity.Irradiated splenocytes directly suppressed CFU-GM formation from bone marrow cells,and CB-MSC co-culture reversed this inhibition.Conclusion Allogeneic CB-MSC transplantation attenuated radiation-induced hematopoietic toxicity,and provided immunoprotection by alleviating lymphocyte-mediated CFU-GM inhibition,expanding Tregs,regulating T cell chemokine receptor expressions,and skewing the Th1/Th2 balance toward anti-inflammatory Th2 polarization.

  2. Arresting rampant dental caries with silver diamine fluoride in a young teenager suffering from chronic oral graft versus host disease post-bone marrow transplantation: a case report

    OpenAIRE

    Chu, Chun-Hung; Lee, Angeline Hui-Cheng; Zheng, Liwu; Mei, May Lei; Chan, Godfrey Chi-fung

    2014-01-01

    BACKGROUND: Rampant caries is an advanced and severe dental disease that affects multiple teeth. This case describes the management of rampant caries in a young teenager suffering from chronic oral graft versus host disease after allogeneic bone marrow transplantation. CASE PRESENTATION: A 14-year-old Chinese boy suffering from beta-thalassemia major was referred to the dental clinic for the management of rampant dental caries. An oral examination revealed pale conjunctiva, bruising of lips, ...

  3. Can lung function measurements be used to predict which patients will be at risk of developing interstitial pneumonitis after bone marrow transplantation?

    OpenAIRE

    Milburn, H J; Prentice, H G; du Bois, R M

    1992-01-01

    BACKGROUND: Lung function often deteriorates after bone marrow transplantation for haematological malignancies. Whether pulmonary function measurements are useful for monitoring patients' progress after transplantation and for alerting clinicians to the development of pneumonitis is uncertain. METHODS: Serial pulmonary function measurements were made in 39 patients with a haematological malignancy, and the values from 18 recipients of T cell depleted allogeneic (n = 17) or autologous (n = 1) ...

  4. Electron beam irradiation to the allogeneic, xenogenic and synthetic bone materials

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Soung Min; Park, Min Woo; Jeong, Hyun Oh [School of Dentistry Seoul National University, Seoul (Korea, Republic of); and others

    2013-07-01

    For the development of the biocompatible bony regeneration materials, allogenic, xenogenic and synthetic bone were irradiated by electron beam to change the basic components and structures. For the efficient electron beam irradiating condition of these allogenic, xenogenic and artificial bone substitutes, the optimal electron beam energy and their individual dose were established, to maximize the bony regeneration capacity. Commercial products of four allogenic bones, such as Accell (ISOTIS OrthogBiologics Co., USA), Allotis (Korea Bone Bank Co., Korea), Oragraft (LifeNet Co., USA), and Orthoblast (Integra Orthobiologics Inc., USA), six xenogenic bones, such as BBP (OscoTec Co., Korea), Bio-cera (OscoTec Co., Korea), Bio-oss (Geistlich Pharma AG, Switzerland), Indu-cera (OscoTec Co., Korea), OCS-B (Nibec Co., Korea), and OCS-H (Nibec Co., Korea), and six synthetic bones, such as BMP (Couellmedi Co., Korea), BoneMedik (Meta Biomed Co., Korea), Bone plus (Megagen Co., Korea), MBCP (Biomatlante Co., France), Osteon (Genoss Co., Korea), and Osteogen (Impladent LTD., USA), were used. We used 1.0 and 2.0 MeV superconduction accelerator, and/or microtrone with different individual 60, 120 kGy irradiation dose. Different dose irradiated specimens were divided 6 portions each, so total 360 groups were prepared. 4 portions were analyzed each by elementary analysis using FE-SEM (Field Emission Scanning Microscopy) and another 2 portions were grafted to the calvarial defect of Sprague-Dawley rat, following histologic, immunohistochemical analysis and TEM study were processed at the 8th and 16th weeks, in vivo. This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MEST)

  5. Identifying A Molecular Phenotype for Bone Marrow Stromal Cells With In Vivo Bone Forming Capacity

    DEFF Research Database (Denmark)

    Larsen, Kenneth H; Frederiksen, Casper M; Burns, Jorge S;

    2009-01-01

    Abstract The ability of bone marrow stromal cells (BMSCs) to differentiate into osteoblasts is being exploited in cell-based therapy for repair of bone defects. However, the phenotype of ex vivo cultured BMSCs predicting their bone forming capacity is not known. Thus, we employed DNA microarrays...... comparing two human bone marrow stromal cell (hBMSC) populations: one is capable of in vivo heterotopic bone formation (hBMSC-TERT(+Bone)) and the other is not (hBMSC-TERT(-Bone)). Compared to hBMSC-TERT(-Bone), the hBMSC-TERT(+Bone) cells had an increased over-representation of extracellular matrix genes...... (17% versus 5%) and a larger percentage of genes with predicted SP3 transcription factor binding sites in their promoter region (21% versus 8%). On the other hand, hBMSC-TERT(-Bone) cells expressed a larger number of immune-response related genes (26% versus 8%). In order to test for the predictive...

  6. Osteopetrose maligna: transplante de medula óssea Malignant osteopetrosis: bone marrow transplantation

    Directory of Open Access Journals (Sweden)

    Maria L. Borsato

    2008-04-01

    bone re-absorption also leads to macrocephaly, frontal bossing, hypertelorism, exophthalmos, increased intracranial pressure, retarded tooth eruption, retarded linear growth and psychomotor delay. Death occurs within the first years of life. The only curative therapy is allogeneic bone marrow transplantation with a HLA-identical donor, which restores hematopoiesis, monocyte-macrophage function and bone recovery, but there is no sensorial deficit restoration once present. The authors report two cases of allogeneic bone marrow transplant for infantile malignant osteopetrosis. The first child, on day 1260 after bone marrow transplantation (BMT, showed radiologic bone recovery and no progression of neurological deficits with a bone biopsy showing no signs of osteopetrosis. The second child showed signs of bone re-absorption and no progression of neurological deficits on day 700. The authors emphasize the importance of early diagnosis of osteopetrosis and the necessity of bone marrow transplantation before neurological deficits have begun.

  7. Autologous bone-marrow mesenchymal cell induced chondrogenesis (MCIC).

    Science.gov (United States)

    Huh, Sung Woo; Shetty, Asode Ananthram; Ahmed, Saif; Lee, Dong Hwan; Kim, Seok Jung

    2016-01-01

    Degenerative and traumatic articular cartilage defects are common, difficult to treat, and progressive lesions that cause significant morbidity in the general population. There have been multiple approaches to treat such lesions, including arthroscopic debridement, microfracture, multiple drilling, osteochondral transplantation and autologous chondrocyte implantation (ACI) that are currently being used in clinical practice. Autologous bone-marrow mesenchymal cell induced chondrogenesis (MCIC) is a single-staged arthroscopic procedure. This method combines a modified microfracture technique with the application of a bone marrow aspirate concentrate (BMAC), hyaluronic acid and fibrin gel to treat articular cartilage defects. We reviewed the current literatures and surgical techniques for mesenchymal cell induced chondrogenesis. PMID:27489409

  8. Blockage of caspase-1 activation ameliorates bone marrow inflammation in mice after hematopoietic stem cell transplantation.

    Science.gov (United States)

    Qiao, Jianlin; Wu, Jinyan; Li, Yuanyuan; Xia, Yuan; Chu, Peipei; Qi, Kunming; Yan, Zhiling; Yao, Haina; Liu, Yun; Xu, Kailin; Zeng, Lingyu

    2016-01-01

    Conditioning regimens before hematopoietic stem cell transplantation (HSCT), cause damage to bone marrow and inflammation. Whether inflammasomes are involved in bone marrow inflammation remains unclear. The study aims to evaluate the role of inflammasomes in bone marrow inflammation after HSCT. On days 7, 14, 21 and 28 after HSCT, mice were sacrificed for analysis of bone marrow inflammation, pro-inflammatory cytokines secretion, inflammasomes expression and caspase-1 activation. Bone marrow inflammation with neutrophils and macrophages infiltration was observed after HSCT. Secretion of IL-1β, IL-18, TNF-α and IL-6 were elevated, with increased caspase-1 activation and inflammasomes expression. Caspase-1 inhibitor administration after HSCT significantly reduced infiltration of neutrophils and macrophages into bone marrow and increased the numbers of megakaryocytes and platelets. In conclusion, inflammasomes activation is involved in bone marrow inflammation after HSCT and caspase-1 inhibition attenuates bone marrow inflammation and promoted hematopoietic reconstitution, suggesting targeting caspase-1 might be beneficial for improving HSCT outcomes.

  9. Apoptotic bone marrow CD34+ cells in cirrhotic patients

    Institute of Scientific and Technical Information of China (English)

    Shuang-Suo Dang; Wen-Jun Wang; Ning Gao; Shun-Da Wang; Mei Li; La-Yang Liu; Ming-Zhun Sun; Tao Dong

    2011-01-01

    AIM: To access the frequency and level of apoptotic CD34+ cells isolated from the marrow fluid of patients with post-hepatitis cirrhosis.METHODS: The frequency of bone marrow CD34+ cells and apoptotic bone marrow CD34+ cells in 31 in-patients with post-hepatitis cirrhosis (cirrhosis group), and 15 out-patients without liver or blood disorders (control group) was calculated by flow cytometry. Pa-rameters were collected to evaluate liver functions of patients in cirrhosis group.RESULTS: The percentage of normal bone marrow CD34+ cells was 6.30% ± 2.48% and 1.87% ± 0.53% (t = 3.906, P < 0.01) while that of apoptotic marrow CD34+ cells was 15.00% ± 15.81% and 5.73% ± 1.57% (t = 2.367, P < 0.05) in cirrhosis and control groups, re-spectively. The percentage of apoptotic marrow CD34+ cells was 6.25% ± 3.30% and 20.92 ± 18.5% (t = 2.409, P < 0.05) in Child-Pugh A and Child-Pugh B + C cirrhotic patients, respectively. The percentage of late apoptotic marrow CD34+ cells was positively correlated with the total bilirubin and aspartate aminotransferase serum levels in patients with cirrhosis.CONCLUSION: The status of CD34+ marrow cells in cirrhotic patients may suggest that the ability of he-matopoietic progenitor cells to transform into mature blood cells is impaired.

  10. BONE MARROW EXAMINATION IN PANCYTOPENIA: A STUDY OF SIX YEARS

    Directory of Open Access Journals (Sweden)

    Shailaja

    2014-11-01

    Full Text Available : INTRODUCTION: Pancytopenia is reduction in all the three hematopoietic cell lines as seen in the peripheral blood. As hematopoietic cells are produced in the marrow, its examination forms an important tool in assessing the etiology of pancytopenia. AIMS: The aim of this study was to identify the etiology of pancytopenia using bone marrow examination and to correlate it with iron stores in the marrow. MATERIAL AND METHODS: This retrospective study was carried out over a period of six years in the department of pathology at Kamineni Academy of Medical Sciences and Research Centre from August 2008 to July 2014. In this period, a total of 765 bone marrow examinations were done, out of which 172 (22% fulfilled the criteria for pancytopenia. Clinical details, complete blood picture and bone marrow aspiration were done in all the cases. In some cases, trephine biopsy was also done. The biochemical investigations of serum B 12, folic acid and the serum iron profile were available in few cases. RESULTS: In the 172 cases studied, the most common etiology for pancytopenia on marrow examination was that of megaloblastic anemia (38.95 %, followed by erythroid hyperplasia (19.18 % and dimorphic anemia (14.53 %. Trephine biopsies helped in the diagnosis of aplastic anemias. The iron stores were found to be increased in cases of megaloblastic anemias (61.19 %. There were seven patients on antituberculous treatment, four showed megaloblastic anemia and two had hypoplastic marrows. CONCLUSIONS: Megaloblastic anemia was the commonest cause of pancytopenia in our study. The iron stores are usually high in cases of megaloblastic anemia. Patients on antituberculous drugs should be monitored. The biochemical investigations and the marrow examination should always be performed prior to instituting the treatment.

  11. Significance of bone marrow edema in pathogenesis of rheumatoid arthritis

    International Nuclear Information System (INIS)

    Assessing the pathology of the synovium, its thickening and increased vascularity through ultrasound and magnetic resonance examinations (more often an ultrasound study alone) is still considered a sensitive parameter in the diagnosis of rheumatoid arthritis and in monitoring of treatment efficacy. Magnetic resonance studies showed that, aside from the joint pannus, the subchondral bone tissue constitutes an essential element in the development of rheumatoid arthritis. Bone marrow edema correlates with inflammation severity, joint destruction, clinical signs and symptoms of rheumatoid arthritis, and thus is considered a predictor of rapid radiological progression of the disease. The newest studies reveal that bone marrow edema may be a more sensitive indicator of the response to therapy than appearance of the synovium. Bone marrow edema presents with increased signal in T2-weighted images, being most visible in fat saturation or IR sequences (STIR, TIRM). On the other hand, it is hypointense and less evident in T1-weighted images. It becomes enhanced (hyperintense) after contrast administration. Histopathological studies confirmed that it is a result of bone inflammation (osteitis/osteomyelitis), i.e. replacememt of bone marrow fat by inflammatory infiltrates containing macrophages, T lymphocytes, B lymphocytes, plasma cells and osteoclasts. Bone marrow edema appears after a few weeks from occurrence of symptoms and therefore is considered an early marker of inflammation. It correlates with clinical assessment of disease activity and elevated markers of acute inflammatory phase, i.e. ESR and CRP. It is a reversible phenomenon and may become attenuated due to biological treatment. It is considered a “herald” of erosions, as the risk of their formation is 6-fold higher in sites where BME was previously noted

  12. Influence of the lentiviral vectors mediated mouse genetic engineering Tr after allogeneic bone marrow transplantation in mice%慢病毒载体介导的鼠基因工程调节性T细胞对小鼠移植物抗宿主病的作用研究

    Institute of Scientific and Technical Information of China (English)

    曹江; 李莉; 陈翀; 曾令宇; 李振宇; 潘秀英; 徐开林

    2010-01-01

    目的 通过慢病毒载体介导的鼠叉状头螺旋转录因子(Foxp3)基因表达构建鼠基因工程调节性T细胞(Tr),探讨输注基因工程Tr细胞对小鼠异基因骨髓移植后移植物抗宿主病(GVHD)的影响.方法 利用慢病毒载体介导,将鼠Foxp3基因转导入BALB/c小鼠的CD4+CD25-T淋巴细胞,即为基因工程Tr细胞.建立小鼠异基因骨髓移植模型,在移植时联合输注基因工程Tr,通过受鼠移植后生存期、组织病理学改变、炎性细胞因子浓度等指标评价其防治GVHD的作用.并与单纯照射组、移植对照组、空载体对照组相比较.结果 单纯照射组、移植对照组、工程Tr组和空载体对照组小鼠存活时间分别为(8.8±0.6)d、(36.7±2.5)d、(51.6±4.0)d和(34.1±2.3)d,工程Tr组小鼠存活时间明显长于其他各组(P<0.05).移植对照组及空载体对照组小鼠肝脏、皮肤和小肠病理切片均存在GVHD病理改变,工程Tr组长期存活小鼠的肝脏、皮肤和小肠常规病理切片结构基本正常,未见GVHD病理表现.移植后移植对照组、工程Tr组、空载体对照组受鼠血清IFN-γ、IL-2和TNF-α浓度在21~28 d时达高峰,工程Tr组在21 d时IFN-γ、IL-2和TNF-α浓度高峰较其他两组为低(P<0.05).结论 小鼠异基因骨髓移植时联合输注基因工程Tr细胞可通过减少受鼠移植后炎性细胞因子的分泌有效减少GVHD的发生,减轻其严重程度.%Objective To explore the influence of the lentiviral vectors mediated mouse genetic engineering regulatory T cells(Tr) infused after allogeneic bone marrow transplantation(allo-BMT) on graft-versushost disease(GVHD) in mice. Methods Lentivirus-mediated expression of forkhead box P3 (Foxp3) converted CD4 + CD25 - T cells from BALB/c mice into engineered Tr in vitro. An allo-BMT model of BALB/c→C57BL/6 mice was established. After irradiation, the recipients were injected with donor cells along with genetic engineering Tr. Survival time

  13. The role of SDF-1/CXCR4 axis in recipient's remnant islets regeneration after the transplantation of allogeneic bone marrow mesenchymal stem cells%SDF-1/CXCR4轴在骨髓间充质干细胞移植促进胰岛再生中的作用

    Institute of Scientific and Technical Information of China (English)

    范子扬; 宋振顺; 李煜环; 滕洪飞; 张福琴

    2011-01-01

    Objective To investigate the role of stromal cell derived factor-1 (SDF-1)/CXCR4axis in recipients' remnant islets regeneration and neovascularization after the transplantation of allogeneic bone marrow mesenchymal stem cells (MSCs). Methods MSCs were isolated from SD rats, cultured in vitro and identified by testing the phenotypes with flow cytometry ( FCM ). The diabetic rats induced by streptozotozin were randomly divided into group A ( MSCs transplant group), group B ( MSCs transplant +AMD group) and group C ( DM control group). Group D serve as the normal control. The pancreata were removed and blood serum was retrieved from each group simultaneously at the 13th day after MSCs transplant. The expression of CD31, proliferating cell nuclear antigen (PCNA) and PDX-1 in each group of pancreas tissue was detected by using immunohistochemistry, and the morphological changes in the isletswere observed by Hematoxylin and Eosin (HE) staining. Serum glucose and insulin levels were determined by blood glucose monitor, radioimmunoscintigraphy, and SDF-1 in serum was by enzyme linked immunosorbent assay (ELISA). Results Neovascularization was observed in the remnant islets of the recipient pancreatic tissue and CD31 -positive cells (71.2 ± 5.3 ) %, PCNA-positive cells ( 76. 5 ± 4. 5 ) %, PDX-1-positive cells (69. 8 ±6. 7)% were highly expressed in group A. As compared with group A, seldom-positive cells[CD31 (7.4±2. 1)%, PCNA (5.5 ±3.7)% and PDX-1 (8.8 ±2.9)%]and rarely neovascularization were observed in group B (P <0. 05 ). Serum glucose level in group A was lower than that in group B and group C, but serum insulin level in group A was significantly higher than that in group B and group C (P < 0. 05 ). There was no significant difference between group A and group B in serum SDF-1level ( P > 0. 05 ), but that was higher in groups A and B than in group C ( P < 0. 05 ). Conclusion Obviously, MSCs promote recipient neovascularization surrounding the islets

  14. A study of bone marrow failure syndrome in children

    Directory of Open Access Journals (Sweden)

    Gupta V

    2008-01-01

    Full Text Available Background: Bone marrow failure syndrome (BMFS, or aplastic anemia, includes peripheral blood single cytopenias, as well as pancytopenia due to inability of the marrow to effectively produce blood cells. Aim: To study the clinico-hematological profile and etiological factors of bone marrow failure syndrome in children. Setting and Design: This prospective study was carried out in the Department of Pediatrics of a university teaching hospital over 36 months. Materials and Methods: Children with pancytopenia (Hb < 10 g/dl, absolute neutrophil count < 1.5 x 10 9 /L, platelet count < 100 x 10 9 /L and bone marrow cellularity < 25% were included in the study. History of exposure to drugs, socioeconomic status, ethnicity and occupation of father were noted. Bone marrow aspiration; trephine biopsy; Ham test; viral studies for hepatitis A, B and C; and cytogenetic investigations were carried out. Statistical Analysis: Relative risk was estimated by odds ratio (OR with 95% confidence interval (CI in matched cases and controls. Results: Of the 53 children studied, 6 (11.3% were diagnosed as Fanconi anemia. Two cases had features of myelodysplastic syndrome. Forty-five children were labeled as acquired aplastic anemia, of whom one had evidence of hepatitis B infection and two patients (5.8% had paroxysmal nocturnal hemoglobinuria. Aplastic anemia was more common in children from family with lower socioeconomic status; in Muslims; and where the father′s occupation was weaving, dyeing and painting. However, the number was small to make statistically significant conclusions. No correlation could be established with exposure to drugs. Conclusion: Fanconi anemia was responsible for approximately one-tenth of the cases of bone marrow failure syndrome. Majority of the patients had acquired aplastic anemia. Hepatitis B infection was an uncommon cause of acquired aplastic anemia.

  15. Are bone marrow regenerative cells ideal seed cells for the treatment of cerebral ischemia?★

    OpenAIRE

    Li, Yi; Hua, Xuming; Hua, Fang; Mao, Wenwei; Wan, Liang; Li, Shiting

    2013-01-01

    Bone marrow cells for the treatment of ischemic brain injury may depend on the secretion of a large number of neurotrophic factors. Bone marrow regenerative cells are capable of increasing the secretion of neurotrophic factors. In this study, after tail vein injection of 5-fluorouracil for 7 days, bone marrow cells and bone marrow regenerative cells were isolated from the tibias and femurs of rats, and then administered intravenously via the tail vein after focal cerebral ischemia. Immunohist...

  16. Cell fusion of bone marrow cells and somatic cell reprogramming by embryonic stem cells

    OpenAIRE

    Bonde, Sabrina; Pedram, Mehrdad; Stultz, Ryan; Zavazava, Nicholas

    2010-01-01

    Bone marrow transplantation is a curative treatment for many diseases, including leukemia, autoimmune diseases, and a number of immunodeficiencies. Recently, it was claimed that bone marrow cells transdifferentiate, a much desired property as bone marrow cells are abundant and therefore could be used in regenerative medicine to treat incurable chronic diseases. Using a Cre/loxP system, we studied cell fusion after bone marrow transplantation. Fused cells were chiefly Gr-1+, a myeloid cell mar...

  17. GATA2 regulates differentiation of bone marrow-derived mesenchymal stem cells

    OpenAIRE

    Kamata, Mayumi; Okitsu, Yoko; Fujiwara, Tohru; Kanehira, Masahiko; Nakajima, Shinji; Takahashi, Taro; Inoue, Ai; Fukuhara, Noriko; Onishi, Yasushi; Ishizawa, Kenichi; Shimizu, Ritsuko; Yamamoto, Masayuki; Harigae, Hideo

    2014-01-01

    The bone marrow microenvironment comprises multiple cell niches derived from bone marrow mesenchymal stem cells. However, the molecular mechanism of bone marrow mesenchymal stem cell differentiation is poorly understood. The transcription factor GATA2 is indispensable for hematopoietic stem cell function as well as other hematopoietic lineages, suggesting that it may maintain bone marrow mesenchymal stem cells in an immature state and also contribute to their differentiation. To explore this ...

  18. CXCR2 modulates bone marrow vascular repair and haematopoietic recovery post-transplant

    OpenAIRE

    Hale, Sarah J M; Hale, Ashley B H; Zhang, Youyi; Sweeney, Dominic; Fisher, Nita; van der Garde, Mark; Grabowska, Rita; Pepperell, Emma; Channon, Keith; Martin-Rendon, Enca; Watt, Suzanne M

    2015-01-01

    Murine models of bone marrow transplantation show that pre-conditioning regimens affect the integrity of the bone marrow endothelium and that the repair of this vascular niche is an essential pre-requisite for successful haematopoietic stem and progenitor cell engraftment. Little is known about the angiogenic pathways that play a role in the repair of the human bone marrow vascular niche. We therefore established an in vitro humanized model, composed of bone marrow stromal and endothelial cel...

  19. T CELL REPERTOIRE COMPLEXITY IN SEVER COMBINED IMMUNODEFICIENCY PATIENTS AFTER BONE MARROW TRANSPLANTATION

    Institute of Scientific and Technical Information of China (English)

    曹水; 李晓静

    2003-01-01

    Objective. To study thymus-dependent T cell development and T cell repertoire in human sever combined immunodeficiency (SCID) patients after HLA-identical or haploidentical T cell-depleted allogeneic bone marrow transplantation (BMT). Methods. Blood samples were obtained from 15 SCID patients before transplantation and at varying intervals thereafter. Quantitative competitive PCR assay and immunoscope analysis of the T cell receptor (TCR) Vβ repertoire were performed. Results. Before and within the first 100 days after transplantation, patients' peripheral blood mononuclear cell (PBMC) presented an oligoclonal or polyclonal skewed T cell repertoire, low T cell receptor excision circles (TRECs) values and predominance of CD45RO+ T cell. In contrast, the presence of high numbers of CD45RA+ T cells in bone marrow(BM) circulation reconstituted SCID patients (>100 days post-transplantation) correlated with active T cell production by the thymus as revealed by high TREC values, and a polyclonal T cell repertoire demonstrated by a Gaussian distribution of Vβ-specific peaks. Conclusions. Within one year after BMT, a normal T cell repertoire develops in SCID patients as a result of thymic output. The T cell receptor diversity is highly and positively correlated in these patients with TREC levels.

  20. A study of bone marrow iron storage in hematological disorder

    Directory of Open Access Journals (Sweden)

    Krupal M Pujara

    2014-01-01

    Full Text Available Background: Study of marrow in iron deficiency anemia is very much essential, and it helps to decide whether iron therapy would be of any use or not. Where sophisticated instruments and facilities are not available for measuring iron in the blood by chemical method, this simple technique, is efficient, cost-effective, and result oriented. Aim: The aim was to study the marrow finding in various blood disorders. To establish the fact "old is gold" as "bone marrow iron store by Prussian blue stain" still has its stand in hematology in era of genetic engineering markers study and ferrokinetic study. Materials and Methods: Bone marrow aspiration was performed in 73 patients. Marrow films were stained with hematoxylin and eosin stain, observed and then submitted for Prussian blue stain. Results: In a study of iron deficiency anemia 92.7% of cases received iron store grade in marrow in range of 0-1 (P = 0.001. In megaloblastic anemia, 70% of cases received in the range of 3-4 (P = 0.164, whereas all cases of dimorphic anemia received in the range of 2-3 (P = 0.000 when compared to the normal range of 1-2. Conclusion: Prussian blue stain is simple and helpful technique to see and measure body iron store semi-quantitatively. Furthermore, it helps to decide whether iron therapy would be useful or not.

  1. Cataract after total body irradiation and bone marrow transplantation degree of visual impairment

    International Nuclear Information System (INIS)

    Purpose: To assess the degree of visual impairment as a result of cataract formation after total body irradiation (TBI) for bone marrow transplantation. Methods and Materials: The data from 93 patients who received TBI in 1 or 2 fractions as a part of their conditioning regimen for bone marrow transplantation were analyzed with respect to the degree of visual impairment as a result of cataract formation. The probability to develop severe visual impairment (SVI) was determined for all patients, and the degree of visual impairment was assessed for 56 patients with stabilized cataract, using three categories: no, mild, or severe. Results: For all 93 patients, the probability of developing a cataract causing SVI was 0.44. For allogeneic patients, it was 0.33 without and 0.71 with steroid treatment (p<0.001). All SVI-free probability curves reached a plateau distinct from the cataract-free curves. Apparently, cataracts developing late in the follow-up period rarely cause SVI. Of the patients with stabilized cataract, 32% had no visual impairment, 16% had mild, and 52% severe impairment. No or mild visual impairment was present in 61% of all patients with stable cataract and no steroid treatment compared with only 13% of the patients treated with steroids (p=0.035). Conclusion: SVI occurs in only some of the patients (52%) with stable cataract after TBI for bone marrow transplantation in 1 or 2 fractions. Steroid treatment markedly increases the probability of developing visual problems as result of a cataract after TBI

  2. TUMOR MARKERS IN BONE MARROW IN PATIENTS WITH PROSTATIC CANCER

    OpenAIRE

    Iwai, Akio; Ozono, Seiichiro; Tanaka, Yozo; Nagayoshi, Junichi; Hirayama, Akihide; Kumon, Toshihiko; Joko, Masanori; Hirata, Naoya; Yoshikawa, Motoyoshi; Tabata, Shoichi; Uemura, Hirotsugu; Moriya, Akira; Kaneko, Yoshiteru; Okamoto, Shinji; Hirao, Yoshihiko

    1991-01-01

    We compared prostatic specific acid phosphatase (PAP), prostatic specificantigen (PA) and γ-seminoprotein (γ-SM) levels between bone marrow and serum for the purpose of assessing of the usefulness of these tumor markers in early detection ofbone metastasis in cases with prostatic cancer. Thirty-three patients were entered into this study. Of the patients, 20 had prostatic cancer including 11 with bone metastasis, and 13 patients had benign prostatic hypertrophy (BPH) served as controls. It se...

  3. Bone marrow transplantation reverses new-onset immunoinflammatory diabetes in a mouse model.

    Science.gov (United States)

    Lv, Cheng-Lan; Wang, Jing; Xie, Ting; Ouyang, Jian

    2014-01-01

    Bone marrow transplantation might be an effective method to cure type 1 diabetes mellitus. This study aimed to investigate whether bone marrow transplantation could reverse hyperglycemia in diabetic mice and whether high-dose total body irradiation followed by high-dose bone marrow mononuclear cell infusion could improve the efficiency of bone marrow transplantation in treating diabetic mice. Diabetic mice after multiple low doses of streptozotocin injection were irradiated followed by infusion with approximately 1×10(7) bone marrow mononuclear cells intravenously. Before and after bone marrow transplantation, fasting blood glucose, intraperitoneal glucose tolerance test, serum insulin, pancreatic histology, and the examination of insulin and glucagon in islets were processed. All recipients returned to near euglycemic within 1 week after undergoing bone marrow transplantation. No mice became hyperglycemia again during investigation period. The change of serum insulin, glucose tolerance test, pancreatic histology and the expression of insulin and glucagon in recipient islets after bone marrow transplantation all revealed islets regeneration and significant amelioration when compared respectively with those of diabetic mice without bone marrow transplantation. Bone marrow transplantation contributed to reduce blood glucose, prevent further blood glucose hike in diabetic recipients, and promote islets regeneration. High-dose total body irradiation in combination with high-dose bone marrow monoclear cell infusion could improve the efficiency of bone marrow transplantation in treating streptozotocin-induced diabetes.

  4. Concise Review: Diabetes, the Bone Marrow Niche, and Impaired Vascular Regeneration

    OpenAIRE

    Fadini, Gian Paolo; Ferraro, Francesca; Quaini, Federico; Asahara, Takayuki; Madeddu, Paolo

    2014-01-01

    This review examines the physiological and molecular bone marrow abnormalities associated with diabetes and discusses how bone marrow dysfunction represents a potential root for the development of the multiorgan failure characteristic of advanced diabetes. The notion of diabetes as a bone marrow and stem cell disease opens new avenues for therapeutic interventions ultimately aimed at improving the outcome of diabetic patients.

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  1. File list: Unc.Bld.50.AllAg.Leukemic_bone_marrow [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  4. File list: ALL.Bld.10.AllAg.Leukemic_bone_marrow [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: Pol.Bld.50.AllAg.Leukemic_bone_marrow [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: His.Bld.10.AllAg.Leukemic_bone_marrow [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: Unc.Bld.05.AllAg.Leukemic_bone_marrow [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. Mature adipocytes in bone marrow protect myeloma cells against chemotherapy through autophagy activation

    Science.gov (United States)

    A major problem in patients with multiple myeloma is chemotherapy resistance, which develops in myeloma cells upon interaction with bone marrow stromal cells. However, few studies have determined the role of bone marrow adipocytes, a major component of stromal cells in the bone marrow, in myeloma ch...

  9. Primary bone marrow lymphoma: an uncommon extranodal presentation of aggressive non-hodgkin lymphomas.

    NARCIS (Netherlands)

    Martinez, A.; Ponzoni, M.; Agostinelli, C.; Hebeda, K.M.; Matutes, E.; Peccatori, J.; Campidelli, C.; Espinet, B.; Perea, G.; Acevedo, A.; Mehrjardi, A.Z.; Martinez-Bernal, M.; Gelemur, M.; Zucca, E.; Pileri, S.; Campo, E.; Lopez-Guillermo, A.; Rozman, M.

    2012-01-01

    Bone marrow involvement by lymphoma is considered a systemic dissemination of the disease arising elsewhere, although some tumors may arise primarily in the bone marrow microenvironment. Primary bone marrow lymphoma (PBML) is a rare entity whose real boundaries and clinicobiological significance are

  10. Imaging of malignant infantile osteopetrosis before and after bone marrow transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Cheow, H.K. [Dept. of Paediatric Radiology, Royal Hospital for Sick Children, Bristol (United Kingdom); Dept. of Clinical Radiology, Bristol Royal Infirmary, Bristol (United Kingdom); Steward, C.G. [Dept. of Bone Marrow Transplantation, Royal Hospital for Sick Children, Bristol (United Kingdom); Grier, D.J. [Dept. of Paediatric Radiology, Royal Hospital for Sick Children, Bristol (United Kingdom)

    2001-12-01

    Background: Malignant infantile osteopetrosis (MIOP) is a sclerosing bone disease caused by absence or defective function of osteoclasts. Since these are of haemopoietic origin, the disease can be cured by allogeneic stem-cell transplantation, but there are no detailed studies of radiological follow-up of these procedures. Objective: To investigate the radiological findings at presentation and follow-up in children undergoing bone marrow transplantation (BMT) for MIOP. Materials and methods: Examination of the records and imaging studies of nine paediatric patients undergoing BMT for MIOP during 1988-2000. Results: Presentation findings included characteristic features such as fractures, subperiosteal new bone formation and rachitic appearances. Five children engrafted successfully, allowing assessment of the nature and speed of resolution of radiological features after transplantation. Conclusions: Radiological improvement was apparent within 2 months of successful engraftment with almost complete resolution of abnormalities after 1 year. Studies in two children who are, respectively, 58 and 83 months post-transplant show complete resolution of all bone changes. (orig.)

  11. Imaging of malignant infantile osteopetrosis before and after bone marrow transplantation

    International Nuclear Information System (INIS)

    Background: Malignant infantile osteopetrosis (MIOP) is a sclerosing bone disease caused by absence or defective function of osteoclasts. Since these are of haemopoietic origin, the disease can be cured by allogeneic stem-cell transplantation, but there are no detailed studies of radiological follow-up of these procedures. Objective: To investigate the radiological findings at presentation and follow-up in children undergoing bone marrow transplantation (BMT) for MIOP. Materials and methods: Examination of the records and imaging studies of nine paediatric patients undergoing BMT for MIOP during 1988-2000. Results: Presentation findings included characteristic features such as fractures, subperiosteal new bone formation and rachitic appearances. Five children engrafted successfully, allowing assessment of the nature and speed of resolution of radiological features after transplantation. Conclusions: Radiological improvement was apparent within 2 months of successful engraftment with almost complete resolution of abnormalities after 1 year. Studies in two children who are, respectively, 58 and 83 months post-transplant show complete resolution of all bone changes. (orig.)

  12. Bone marrow transplantation for treatment of radiation disease. Problems involved

    International Nuclear Information System (INIS)

    Transplantation of bone marrow cells still is one of the major means available for treatment of radiation injuries. The decisive indication is the diagnostic of irreversible damage to the hemopoietic stem cells, which becomes manifest about 5 or 6 days after exposure, by severe granulocytopenia and simultaneous, progressive thrombopenia. The radiation dose provoking such severe injury is estimated to be at least 9-10 Gy of homogeneous whole-body irradiation. Preparatory measures for transplantation include proof of tissue compatibility of donor and patient, sufficient immunosuppression prior to and/or after irradiation and bone marrow transplantation. The donor's marrow should be free of T-cells. In spite of preparatory treatment, complications such as immunological reactions or disturbance of organ functions are to be very probable. These are treated according to therapy protocols. (orig./MG)

  13. 复合骨髓间充质干细胞同种异体支架骨修复羊髂骨极限缺损**★%Bone marrow mesenchymal stem cells seeded into an allogeneic scaffold repair critical-sized iliac defects in sheep

    Institute of Scientific and Technical Information of China (English)

    杨楠; 何惠宇; 胡杨; 杨川博

    2013-01-01

    BACKGROUND:Nowadays, the research regarding tissue engineering bone materials and construction methods continues to heat up, and how to repair large bone defects is stil difficult in the clinic. OBJECTIVE:To compare the effects of tissue engineering bones with al ogeneic scaffold material,β-tricalcium phosphate material and basic fibroblast growth factor lentiviral vector-transfected bone marrow mesenchymal stem cel s on the repairing of critical-sized iliac defects in sheep. METHODS:The sheep bone marrow mesenchymal stem cel s were in vitro induced and cultured to the third generation, and then the basic fibroblast growth factor lentiviral vector was constructed. The al ogeneic scaffold materials with transfected and untransfected bone marrow mesenchymal stem cel s, simple al ogeneic scaffold materials andβ-tricalcium phosphate materials were implanted into the sheep model of critical-sized iliac defects (15 mm×10 mm×10 mm). Imaging, histology, and scanning electron microscopy observations were performed at 4, 8 and 12 weeks after repairing. RESULTS AND CONCLUSION:The repairing effect of al ogeneic scaffold materials with basic fibroblast growth factor lentiviral vector transfected bone marrow mesenchymal stem cel s on sheep critical-sized iliac defects was better than that of untransfected al ogeneic scaffold materials, simple al ogeneic scaffold materials andβ-tricalcium phosphate materials;the effect of untransfected al ogeneic scaffold materials was better than that of simple al ogeneic scaffold materials andβ-tricalcium phosphate materials;the degradation rate of simple al ogeneic scaffold materials was higher than that ofβ-tricalcium phosphate materials. The tissue engineering bone constructed using al ogeneic scaffold materials with basic fibroblast growth factor lentiviral vector-transfected bone marrow mesenchymal stem cel s can meet the requirement of bone repairing, and it can guide the new bone formation with good biocompatibility and cannot

  14. Rapamycin Modulates the Maturation of Rat Bone Marrow-derived Dendritic Cells

    Institute of Scientific and Technical Information of China (English)

    Yingjun DING; Xiang CHENG; Tingting TANG; Rui YAO; Yong CHEN; Jiangjiao XIE; Xian YU; Yuhua LIAO

    2008-01-01

    The purpose of the study was to observe the effect of rapamycin (RAPA) on the differentiation and maturation of rat bone marrow-derived dendritic cells (BMDCs) in vitro. BMDCs from Wistar rats were cultured with granulocyte-macrophage colony-stimulating factor plus interleukin-4in the presence or absence of RAPA (20 ng/mL), and stimulated with lipopolysaccharide (LPS) for 24h before cells and supernatants were collected. Surface phenotype of BMDCs was flow-cytometrically detected to determine the expression of maturation markers, MHC class Ⅱ and CD86. Supematants were analyzed for the production of IL-12 and IFN-γ cytokines by using ELISA.BMDCs were co-cultured with T cells from Lewis rats and mixed lymphocyte reaction was assessed by MTT method. The morphology of BMDCs stimulated with LPS remained immature after RAPA pretreatment. RAPA significantly decreased the CD86 expression, impaired the IL-12 and IFN-γproduction of BMDCs stimulated with LPS, and inhibited the proliferation of allogeneic T cells. In conclusion, RAPA can inhibit the maturation of BMDCs stimulated with LPS in terms of the morphology, surface phenotype, cytokine production, and ability of BMDCs to stimulate the proliferation of allogeneic T cells in vitro.

  15. Archival Bone Marrow Samples: Suitable for Multiple Biomarker Analysis?

    DEFF Research Database (Denmark)

    Lund, Bendik; Najmi, A. Laeya; Wesolowska, Agata;

    2015-01-01

    Archival samples represent a significant potential for genetic studies, particularly in severe diseases with risk of lethal outcome, such as in cancer. In this pilot study, we aimed to evaluate the usability of archival bone marrow smears and biopsies for DNA extraction and purification, whole...

  16. Archival bone marrow samples: suitable for multiple biomarker analysis.

    Science.gov (United States)

    Lund, Bendik; Najmi, Laeya A; Wesolowska-Andersen, Agata; Landsem, Veslemøy M; Rasmussen, Kirsten K; Borst, Louise; Gupta, Ramneek; Schmiegelow, Kjeld; Klungland, Helge

    2015-01-01

    AB Archival samples represent a significant potential for genetic studies, particularly in severe diseases with risk of lethal outcome, such as in cancer. In this pilot study, we aimed to evaluate the usability of archival bone marrow smears and biopsies for DNA extraction and purification, whole genome amplification (WGA), multiple marker analysis including 10 short tandem repeats, and finally a comprehensive genotyping of 33,683 single nucleotide polymorphisms (SNPs) with multiplexed targeted next-generation sequencing. A total of 73 samples from 21 bone marrow smears and 13 bone marrow biopsies from 18 Danish and Norwegian childhood acute lymphoblastic leukemia patients were included and compared with corresponding blood samples. Samples were grouped according to the age of sample and whether WGA was performed or not. We found that measurements of DNA concentration after DNA extraction was dependent on detection method and that spectrophotometry overestimated DNA amount compared with fluorometry. In the short tandem repeat analysis, detection rate dropped slightly with longer fragments. After WGA, this drop was more pronounced. Samples stored for 0 to 3 years showed better results compared with samples stored for 4 to 10 years. Acceptable call rates for SNPs were detected for 7 of 42 archival samples. In conclusion, archival bone marrow samples are suitable for DNA extraction and multiple marker analysis, but WGA was less successful, especially when longer fragments were analyzed. Multiple SNP analysis seems feasible, but the method has to be further optimized.

  17. Clostridium glycolicum Bacteremia in a Bone Marrow Transplant Patient▿

    OpenAIRE

    Elsayed, Sameer; Zhang, Kunyan

    2007-01-01

    We describe a case of Clostridium glycolicum bacteremia and septic shock in an adult woman with a recent bone marrow transplant for relapsed Hodgkin's disease. The bacterium was identified by 16S rRNA gene sequencing. This is the first published report of the recovery of this organism from human clinical material.

  18. Reactivation of polyomavirus in bone marrow transplant recipients.

    OpenAIRE

    Cotterill, H. A.; Macaulay, M. E.; Wong, V

    1992-01-01

    Polyomavirus was detected in the urine samples of 12 (48%) out of 25 patients within three months of receiving a bone marrow transplantation. The virus was first detected 11 to 46 days after the transplantation and excretion persisted for up to 42 days. Detection of the virus was not associated with symptoms and it seemed to be a marker of immunosuppression.

  19. Immunological aspects of unrelated bone marrow transplantation: alloreactivity and immunoreconstitution

    Directory of Open Access Journals (Sweden)

    Madrigal J. Alejandro

    2001-01-01

    Full Text Available The main complications after bone marrow transplantation (BMT are graft versus host disease (GvHD, post-transplant viral infections and disease relapse. The underlying causes of these problems are the degree of HLA matching between donor and patient and the rate of immune reconstitution.

  20. A Role For Photodynamic Therapy In Autologous Bone Marrow Transplantation

    Science.gov (United States)

    Sieber, Fritz

    1988-02-01

    Simultaneous exposure to the amphipathic fluorescent dye merocyanine 540 (MC 540) and light of a suitable wavelength rapidly kills leukemia, lymphoma, and neuroblastoma cells but spares normal pluripotent hematopoietic stem cells. Tests in several preclinical models and early results of a phase I clinical trial suggest that MC 540-mediated photosensitization may be useful for the extracorporeal purging of autologous remission bone marrow grafts.

  1. Agent-Based Deterministic Modeling of the Bone Marrow Homeostasis.

    Science.gov (United States)

    Kurhekar, Manish; Deshpande, Umesh

    2016-01-01

    Modeling of stem cells not only describes but also predicts how a stem cell's environment can control its fate. The first stem cell populations discovered were hematopoietic stem cells (HSCs). In this paper, we present a deterministic model of bone marrow (that hosts HSCs) that is consistent with several of the qualitative biological observations. This model incorporates stem cell death (apoptosis) after a certain number of cell divisions and also demonstrates that a single HSC can potentially populate the entire bone marrow. It also demonstrates that there is a production of sufficient number of differentiated cells (RBCs, WBCs, etc.). We prove that our model of bone marrow is biologically consistent and it overcomes the biological feasibility limitations of previously reported models. The major contribution of our model is the flexibility it allows in choosing model parameters which permits several different simulations to be carried out in silico without affecting the homeostatic properties of the model. We have also performed agent-based simulation of the model of bone marrow system proposed in this paper. We have also included parameter details and the results obtained from the simulation. The program of the agent-based simulation of the proposed model is made available on a publicly accessible website. PMID:27340402

  2. Specific depletion of mature T lymphocytes from human bone marrow

    DEFF Research Database (Denmark)

    Geisler, C; Møller, J; Plesner, T;

    1989-01-01

    An effective method for specific depletion of mature T lymphocytes from human bone marrow mononuclear cells (BMMC) with preservation of prethymic T cells and natural killer (NK) cells is presented. The BMMC were incubated with F101.01, a monoclonal antibody recognizing an epitope of the T...

  3. Morphometrical analysis of bone marrow metamyelocyte in pernicious anemia

    Directory of Open Access Journals (Sweden)

    Mačukanović-Golubović Lana

    2008-01-01

    Full Text Available Introduction In pernicious anemia besides the presence of megaloblasts in the bone marrow, changes in myeloid series were seen; being the most evident among the metamyelocyte. The aim of this study was to perform the quantification of metamyelocyte of the bone marrow in pernicious anemia. Material and methods Between 2000-2006 in the Clinic of Hematology-Niš, 68 patients with pernicious anemia were examined and 30 with dyspeptic syndrome (control group. The group of patients with pernicious anemia in relation to pathohistologic changes of gastric mucosa was divided into three sub-groups. Morphometrical analysis of metamyelocyte of the bone marrow was carried out by the application of the double netlike system (B100. The following parameters were used: relative surface, contour length, absolute surface of nucleus and cytoplasm, absolute contour nucleus and cytoplasm density, shaped nucleus and cytoplasmic factor and nuclear-cytoplasmatic ratio of meta- myelocytes. Results Relative surface, contour length, absolute surface and contour density of nucleus and cytoplasm of metamyelocytes increased simultaneously with the degree of atrophic gastritis. Shaped nucleus and cytoplasmic factor and nuclear-cytoplasmatic ratio of metamyelocytes decreased in all examined groups in relation to the control group. Conclusion Not only are bone marrow erythroid elements scoped with megaloblastic changes but the changes on the level of leukocyte cells as well. The result of this is the phenomena of giant metamyelocytes.

  4. Study of bone marrow: dyserythropoiesis for etiological evaluation of anemia

    Directory of Open Access Journals (Sweden)

    Jignesh K. Parmar

    2015-12-01

    Conclusions: The sincere blood film examination and keen morphological evaluation of erythroid series for dyserythropiesis and leukopoesis and megakaryopiesis in bone marrow aspiration smear - supported with other investigation can navigate to etiological factors of anaemia and other haematological disorders. [Int J Res Med Sci 2015; 3(12.000: 3734-3738

  5. Bone marrow dysfunction in chronic heart failure patients

    NARCIS (Netherlands)

    Westenbrink, B. Daan; Voors, Adriaan A.; de Boer, Rudolf A.; Schuringa, Jan J.; Klinkenberg, Theo; van der Harst, Pim; Vellenga, Edo; van Veldhuisen, Dirk J.; van Gilst, Wiek H.

    2010-01-01

    To investigate whether chronic heart failure (CHF) is associated with a general dysfunction of the haematopoietic compartment. Bone marrow was obtained during coronary artery bypass graft surgery from 20 patients with CHF (age 67 +/- 6 years, 75% NYHA class >= III, LVEF 32 +/- 6%), and 20 age- and g

  6. Pain During Bone Marrow Aspiration: Prevalence and Prevention

    NARCIS (Netherlands)

    Vanhelleputte, P.; Nijs, K.A.N.D.; Delforge, M.; Evers, G.; Vanderschueren, S.

    2003-01-01

    The Prevalence, intensity, determinants and prevention of pain during bone marrow aspiration (BMA) in adults are not well defined. In the first part of this prospective study (observational phase), 132 adult hematological patients undergoing BMA after local anesthesia scored the procedural pain by m

  7. Neurokinin-1 receptor signalling impacts bone marrow repopulation efficiency.

    Directory of Open Access Journals (Sweden)

    Alexandra Berger

    Full Text Available Tachykinins are a large group of neuropeptides with both central and peripheral activity. Despite the increasing number of studies reporting a growth supportive effect of tachykinin peptides in various in vitro stem cell systems, it remains unclear whether these findings are applicable in vivo. To determine how neurokinin-1 receptor (NK-1R deficient hematopoietic stem cells would behave in a normal in vivo environment, we tested their reconstitution efficiency using competitive bone marrow repopulation assays. We show here that bone marrow taken from NK-1R deficient mice (Tacr1(-/- showed lineage specific B and T cell engraftment deficits compared to wild-type competitor bone marrow cells, providing evidence for an involvement of NK-1R signalling in adult hematopoiesis. Tachykinin knockout mice lacking the peptides SP and/or HK-1 (Tac1 (-/-, Tac4 (-/- and Tac1 (-/-/Tac4 (-/- mice repopulated a lethally irradiated wild-type host with similar efficiency as competing wild-type bone marrow. The difference between peptide and receptor deficient mice indicates a paracrine and/or endocrine mechanism of action rather than autocrine signalling, as tachykinin peptides are supplied by the host environment.

  8. Bone Marrow Pathology Predicts Mortality in Chronic Hemodialysis Patients

    Directory of Open Access Journals (Sweden)

    Cheng-Hao Weng

    2015-01-01

    Full Text Available Introduction. A bone marrow biopsy is a useful procedure for the diagnosis and staging of various hematologic and systemic diseases. The objective of this study was to investigate whether the findings of bone marrow studies can predict mortality in chronic hemodialysis patients. Methods. Seventy-eight end-stage renal disease patients on maintenance hemodialysis underwent bone marrow biopsies between 2000 and 2011, with the most common indication being unexplained anemia followed by unexplained leukocytosis and leukopenia. Results. The survivors had a higher incidence of abnormal megakaryocyte distribution P=0.001, band and segmented cells P=0.021, and lymphoid cells P=0.029 than the nonsurvivors. The overall mortality rate was 38.5% (30/78, and the most common cause of mortality was sepsis (83.3% followed by respiratory failure (10%. In multivariate Cox regression analysis, both decreased (OR 3.714, 95% CI 1.671–8.253, P=0.001 and absent (OR 9.751, 95% CI 2.030–45.115, P=0.004 megakaryocyte distribution (normal megakaryocyte distribution as the reference group, as well as myeloid/erythroid ratio (OR 1.054, CI 1.012–1.098, P=0.011, were predictive of mortality. Conclusion. The results of a bone marrow biopsy can be used to assess the pathology, and, in addition, myeloid/erythroid ratio and abnormal megakaryocyte distribution can predict mortality in chronic hemodialysis patients.

  9. Identification of free nitric oxide radicals in rat bone marrow

    DEFF Research Database (Denmark)

    Aleksinskaya, Marina A; van Faassen, Ernst E H; Nelissen, Jelly;

    2013-01-01

    Nitric oxide (NO) has been implicated in matrix metallopeptidase 9 (MMP9)-dependent mobilization of hematopoietic stem and progenitor cells from bone marrow (BM). However, direct measurement of NO in the BM remained elusive due to its low in situ concentration and short lifetime. Using NO spin...

  10. SPONTANEOUS TRANSFORMATION OF CULTURED PORCINE BONE MARROW STROMAL CELLS

    DEFF Research Database (Denmark)

    Zou, Lijin; Zou, Xuenong; Li, Haisheng;

    INTRODUCTION Recently, the possibility that tumors originate from cancer stem cells (CSCs) has been proposed. Stem cells and CSCs share certain features such as self-renewal and differentiation potential. The aim of this study was to evaluate whether bone marrow stromal cells (BMSC) after long-te...

  11. Distribution of Caesium-137 in Samples Consisting of Soft Tissue, Bone and Bone Marrow

    International Nuclear Information System (INIS)

    The investigations which were performed up to now on the distribution of-caesium-137 in the human organism could not explain exactly the distribution of the radiocaesium between bone and bone marrow. That is why a reliable estimation of the radiation burden of the skeleton caused by the incorporation of atmospheric caesium-137 is not given in the literature. Therefore, the concentration of caesium-137 in compact bones as well as in bone marrow was determined. Furthermore, the concentration of caesium-137 in the soft tissue of the same individuals was measured. (author)

  12. Bone marrow and stem cell transplantation at King Hussein cancer center.

    Science.gov (United States)

    Abdel-Rahman, F; Hussein, Aa; Rihani, R; Hlalah, Oa; El Taani, H; Sharma, S; Nserat, T; Sarhan, Mm

    2008-08-01

    Bone marrow and stem cell transplantation in Jordan has been performed since the 1990s, but the first comprehensive program was established at King Hussein Cancer Center (KHCC) in March 2003. The program, in addition to other health care institutions in Amman, serves approximately 5.6 million Jordanians. Also, we treat several patients per year from neighboring Arab countries. The program at KHCC performs an average of 80 transplants per year. During the past 4 years 320 patients received transplants at KHCC; 26% of them received an autologous graft and 74% allogeneic grafts. Of the allogeneic grafts 91% were taken from matched family members, 6.7% were haploidentical from one of the parents, and 2.3% were from an unrelated donor or umbilical cord blood. The actuarial overall survival among all patients has been around 65%. The most common indication for transplantation at KHCC was leukemia/MDS followed by benign nonmalignant hematological/immune deficiency/metabolic disorders, with thalassemia major being the most common among this group. The cost of SCT is variable and depends on many factors including the type of transplant and the attending post-transplant complications. The average charge for autologous transplant (both adults and pediatrics) is 24,695 JD (one JD equals 1.42 USD), and the average charge for allogeneic transplant (both adults and pediatrics) excluding haploidentical transplant is 46,787 JD. We have not noticed any peculiar patterns of complications following BMT; however, we have seen a high incidence of chronic GVHD following minitransplant with fludarabine and single-dose TBI (Seattle protocol). At the inception of the program, invasive fungal infection mainly related to building construction, and central line complications were significant. Measures implemented to control such complications were successful to a large extent. We report our results to the EBMT group and we are accredited as an unrelated transplantation center. Although from a

  13. Dissecting the Role of Bone Marrow Stromal Cells on Bone Metastases

    OpenAIRE

    Denise Buenrostro; Serk In Park; Julie A. Sterling

    2014-01-01

    Tumor-induced bone disease is a dynamic process that involves interactions with many cell types. Once metastatic cancer cells reach the bone, they are in contact with many different cell types that are present in the cell-rich bone marrow. These cells include the immune cells, myeloid cells, fibroblasts, osteoblasts, osteoclasts, and mesenchymal stem cells. Each of these cell populations can influence the behavior or gene expression of both the tumor cells and the bone microenvironment. Addit...

  14. Allogeneic stem cell transplantation for bone regeneration of a nonunion defect in a canine

    Directory of Open Access Journals (Sweden)

    Yaneselli K

    2013-10-01

    Full Text Available Kevin Yaneselli,1 Andrea Filomeno,1 Gabriel Semiglia,1 Carolina Arce,1 Analía Rial,2 Natalia Muñoz,2 María Moreno,2 Kent Erickson,3 Jacqueline Maisonnave11Universidad de la República, Facultad de Veterinaria, Montevideo, Uruguay; 2Laboratory for Vaccine Research, Department of Biotechnology, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay; 3University of California, Davis, CA, USAAbstract: Nonunion bone defects occur frequently with local pain, functional limitations, muscular atrophy, and fistulas due to osteomyelitis. The application of mesenchymal stem cells (MSCs could improve regeneration of bone following bone defects. The objective of the present study was to evaluate the treatment of a nonunion defect due to chronic osteomyelitis in a greyhound female dog with allogeneic adipose tissue-derived mesenchymal stem cells (AT-MSCs. The implanted cells were adherent to plastic, were of fibroblast type, and expressed the canine stem cell markers CD90low, CD44high, and CD45-. Cell therapy consisted of five percutaneous weekly injections of 2 × 106 allogeneic AT-MSCs into the bone defect (total of 10 × 106 AT-MSCs. The patient was evaluated clinically and radiologically for up to 1 year. The results were clinical improvement, a light lameness score of 1 at week 16, return to use of its forearm, no pain, and increased muscular mass. No signs of osteomyelitis were observed radiologically and clinically there were no fistulas. There was no evidence of local or systemic adverse reactions caused by the aloimplants. The clinical relevance of the cell therapy contributing to repair of bone defects in small animals is a very promising future alternative. These results may have an important impact in new regenerative treatments for animal and human orthopedics.Keywords: allogeneic, AT-MSCs, treatment, nonunion, canine

  15. Recruitment of bone marrow derived cells during anti-angiogenic therapy in GBM : Bone marrow derived cell in GBM

    NARCIS (Netherlands)

    Boer, Jennifer C.; Walenkamp, Annemiek M. E.; den Dunnen, Wilfred F. A.

    2014-01-01

    Glioblastoma (GBM) is a highly vascular tumor characterized by rapid and invasive tumor growth, followed by oxygen depletion, hypoxia and neovascularization, which generate a network of disorganized, tortuous and permeable vessels. Recruitment of bone marrow derived cells (BMDC) is crucial for vascu

  16. Chronic radium intoxication: morphology of bone and marrow infarcts

    International Nuclear Information System (INIS)

    Using direct and polarized light microscopy and a variety of standard histologic stains, the morphology of two groups of bone and marrow infarcts are compared. One group is from patients whose infarcts can, with confidence, be related to ischemia, trauma, or embolization and whose histories exclude radium ingestion or exposure. The second group is from radium dial painters whose pre-terminal body burdens of 226Ra ranged from 1.67 μCi to some value equal to or below 0.0042 μCi. The individual bone or marrow infarct among the radium cases does not differ radically from those in the ischemia-injury group, although taken as a whole, the radium-related infarcts are marked by less osteogenetic activity, a less prominent blood supply, much less cellular fibrous tissue and more extensive deposits of basophilic bone debris than the ischemia-injury group

  17. Bone marrow cells produce nerve growth factor and promote angiogenesis around transplanted islets

    Institute of Scientific and Technical Information of China (English)

    Naoaki; Sakata; Nathaniel; K; Chan; John; Chrisler; Andre; Obenaus; Eba; Hathout

    2010-01-01

    AIM:To clarify the mechanism by which bone marrow cells promote angiogenesis around transplanted islets.METHODS: Streptozotocin induced diabetic BALB/ c mice were transplanted syngeneically under the kidney capsule with the following: (1) 200 islets (islet group: n=12), (2) 1-5×106 bone marrow cells (bone marrow group: n=11), (3) 200 islets and 1-5×106 bone marrow cells (islet + bone marrow group: n= 13), or (4) no cells (sham group:n=5). All mice were evaluated for blood glucose, serum insulin, serum nerve...

  18. Cross-talk between Bone Marrow and Tissue Injury : Novel Regenerative Therapy for Severely Damaged Tissues by Mobilizing Bone Marrow Mesenchymal Stem Cells in Vivo

    OpenAIRE

    Tamai, Katsuto; Kaneda, Yasufumi

    2013-01-01

    group box 1 (HMGB1), which mobilizes a sub-population of non-hematopoietic cells from bone marrow into the circulation to repair skin and restore Col 7 expression. These bone marrow-derived epithelial stem/progenitor cells are derived from a lineage-negative, platelet-derived growth factor alpha-positive mesenchymal stem cell pool in bone marrow, which represents less than 0.3% of the total bone marrow cell population. In addition, systemic administration of HMGB1 to wounded wild-type mice le...

  19. Bone marrow MR imaging findings in disuse osteoporosis

    Energy Technology Data Exchange (ETDEWEB)

    Abreu, Marcelo R. de [Hospital Mae de Deus, Porto Alegre (Brazil); Wesselly, Michelle; Chung, Christine B.; Resnick, Donald [University of California, San Diego, CA (United States)

    2011-05-15

    To demonstrate MR imaging findings in the cortical and trabecular bone as well as marrow changes in patients with disuse osteoporosis (DO). Sixteen patients (14 men, 2 women, aged 27-86 years) with clinical and radiographic evidence of DO of a lower limb joint (10 knees, 6 ankles) with MR examination of the same joint performed within a 1-month period were selected, as well as 16 healthy volunteers (7 men, 9 women, aged 25-75 years, 10 knees and 6 ankles). MR imaging findings of the bone marrow were analyzed by 2 musculoskeletal radiologists in consensus regarding: diffuse or focal signal alteration, reinforcement of vertical or longitudinal trabecular lines, and presence of abnormal vascularization. All patients (100%,16/16) with DO presented MR imaging abnormalities of the bone marrow, such as: accentuation of vertical trabecular lines (50%, 8/16), presence of subchondral lobules of fat (37.5%, 6/16), presence of horizontal trabecular lines (31%, 5/16), prominence of bone vessels (25%, 4/16), and presence of dotted areas of high signal intensity on T2-weighted fat-suppressed sequences (12.5%, 2/16). Such MR findings did not appear in the control individuals. There are several MR imaging findings in bones with DO that range from accentuation of vertical and horizontal marrow lines, presence of subchondral lobules of fat, prominent bone vascularization and the presence of dotted foci of high signal intensity on T2-weighted fat-suppressed sequences. Recognition of these signs may prove helpful in the identification of DO as well as distinguishing these findings from other entities. (orig.)

  20. CXCR2 modulates bone marrow vascular repair and haematopoietic recovery post-transplant.

    Science.gov (United States)

    Hale, Sarah J M; Hale, Ashley B H; Zhang, Youyi; Sweeney, Dominic; Fisher, Nita; van der Garde, Mark; Grabowska, Rita; Pepperell, Emma; Channon, Keith; Martin-Rendon, Enca; Watt, Suzanne M

    2015-05-01

    Murine models of bone marrow transplantation show that pre-conditioning regimens affect the integrity of the bone marrow endothelium and that the repair of this vascular niche is an essential pre-requisite for successful haematopoietic stem and progenitor cell engraftment. Little is known about the angiogenic pathways that play a role in the repair of the human bone marrow vascular niche. We therefore established an in vitro humanized model, composed of bone marrow stromal and endothelial cells and have identified several pro-angiogenic factors, VEGFA, ANGPT1, CXCL8 and CXCL16, produced by the stromal component of this niche. We demonstrate for the first time that addition of CXCL8 or inhibition of its receptor, CXCR2, modulates blood vessel formation in our bone marrow endothelial niche model. Compared to wild type, Cxcr2(-/-) mice displayed a reduction in bone marrow cellularity and delayed platelet and leucocyte recovery following myeloablation and bone marrow transplantation. The delay in bone marrow recovery correlated with impaired bone marrow vascular repair. Taken together, our data demonstrate that CXCR2 regulates bone marrow blood vessel repair/regeneration and haematopoietic recovery, and clinically may be a therapeutic target for improving bone marrow transplantation.

  1. Bone marrow scintigraphy and MR tomography in malignant lymphoma: Comparison with results of histology

    International Nuclear Information System (INIS)

    One hundred and seven patients with malignant Hodgkin and non-Hodgkin lymphoma were examined by bone marrow scintigraphy, MRI of bone marrow and bone marrow biopsy to detect bone marrow infiltration. The findings of bone marrow imaging and biopsy were classified as normal (grade 0), suggesting reactive changes of bone marrow (grade 1) or suspicious for infiltration (grade 2). About half of all results of biopsy and imaging methods agreed completely. There was a difference of two steps in the classification in only 2 cases (MRI) and 5 cases (scintigraphy). In patients with chronic lymphocytic leukemia false negative findings by both bone marrow imaging techniques were frequent. Although a positive biopsy result must be accepted as proof of bone marrow infiltration, our results indicate that a negative biopsy does not exclude tumor involvement. In all 4 patients with infiltration suspected on MRI or scintigraphy results but with normal findings or reactive changes in the first blind biopsy, blind rebiopsy or guided rebiopsy confirmed the results of the imaging methods. In both patients evaluated at autopsy the preceding MRI and scintigraphy results were confirmed completely, although in both of these patients antemortem biopsy had indicated different findings. Based upon these observations, bone marrow scintigraphy and MRI should be routinely included in the staging of malignant lymphoma as an adjunct to blind bone marrow biopsy in the complete evaluation of bone marrow status. (orig./MG)

  2. MR imaging of the foot and ankle: patterns of bone marrow signal abnormalities

    International Nuclear Information System (INIS)

    Diagnosis of marrow disorders of the foot and ankle is among the more challenging aspects of MR interpretation. Evaluation of normal and abnormal bone marrow with regard to pattern, distribution, and signal characteristics on different sequences often allows a specific diagnosis. This pictorial review illustrates MR imaging findings of normal variants of bone marrow of the foot and ankle, and the varied responses of bone marrow to trauma, stress, or disease. (orig.)

  3. Pericyte coverage of abnormal blood vessels in myelofibrotic bone marrows

    DEFF Research Database (Denmark)

    Zetterberg, Eva; Vannucchi, Alessandro M; Migliaccio, Anna Rita;

    2007-01-01

    patients with myelofibrosis differed from that in samples from controls. DESIGN AND METHODS: We assessed the microvascular density (MVD), vessel morphology and pericyte coverage in bone marrows from 19 myelofibrosis patients and nine controls. We also studied the same parameters in two mouse models...... of myelofibrosis, with genetic alterations affecting megakaryocyte differentiation (i.e. one model with low GATA-1 expression and the other with over-expression of thrombopoietin). RESULTS: In myelofibrotic marrows, MVD was 3.8-fold greater than in controls (pvessels displayed 5.9-fold larger mean...... perimeters (pvessels in patients with myelofibrosis were pericyte-coated but only 51+/-20 % of vessels in controls (p

  4. Application of human amniotic mesenchymal cells as an allogeneic transplantation cell source in bone regenerative therapy

    International Nuclear Information System (INIS)

    Autogenous mesenchymal stem cells (MSCs) have therapeutic applications in bone regenerative therapy due to their pluripotency. However, the ability of MSCs to proliferate and differentiate varies between donors. Furthermore, alternative sources of MSCs are required for patients with contraindications to autogenous cell therapy. The aim of this study was to evaluate the potential of mesenchymal cells from the human amniotic membrane (HAM) as a source of cells for allogeneic transplantation in bone regenerative therapy. Cells that retained a proliferative capacity of more than 50 population doubling level were distinguished from other HAM cells as HAMα cells and induced to osteogenic status—their in vivo osteogenesis was subsequently investigated in rats. It was found that HAMα cells were spindle shaped and were positive for MSC markers and negative for hematopoietic stem cell markers. Alkaline phosphatase activity and calcium deposition increased with osteogenic status of HAMα cells. The expression of osteocalcin mRNA was increased in HAMα cells cultured on calcium phosphate scaffolds. Moreover, xenografted HAMα cells remained viable and produced extracellular matrix for several weeks. Thus, this study suggests that human amniotic mesenchymal cells possess osteogenic differentiation potential and could be applied to allogeneic transplantation in bone regenerative therapy. - Highlights: ► Human amniotic mesenchymal cells include cells (HAMα cells) that have the properties of MSCs. ► HAMα cells have excellent osteogenic differentiation potential. ► Osteogenic differentiation ability of HAMα was amplified by calcium phosphate scaffolds. ► HAMα cells can be applicable to allogeneic cell transplantation in bone regenerative therapy.

  5. Principles of bone marrow processing and progenitor cell/mononuclear cell concentrate collection in a continuous flow blood cell separation system.

    Science.gov (United States)

    Hester, J P; Rondón, G; Huh, Y O; Lauppe, M J; Champlin, R E; Deisseroth, A B

    1995-08-01

    The application of continuous flow apheresis technology to processing bone marrow for collection of the mononuclear progenitor cell population appears to follow the same principles as collection of mononuclear cells from peripheral blood. Unlike peripheral blood, however, where mobilization of cells from extravascular sites during the procedures contributes significantly to the final cell yield, the entire quantity of progenitor cells available for recovery from marrow is present in the original marrow when it is pooled. The process then becomes one of attempting optimal recovery of the cells of interest while excluding contaminating erythrocytes and cells of the myeloid series. This study reports the development of a protocol for recovery of MNC, CD33+, CD34+, and CD34+/DR- cells from harvested marrow for autologous and allogeneic transplants using a continuous flow blood cell separator, the variables influencing the recovery of the cells of interest and the clinical response to infusion of the processed cells.

  6. Concentration of bone marrow mononuclear cells for in vitro treatment and AB0-incompatible transplantation: a rapid and reproducible procedure using the haemonetics V50 cell separator.

    Science.gov (United States)

    Wiesneth, M; Hertenstein, B; Koerner, K; Heimpel, H; Heit, W

    1988-01-01

    Forty-nine allogeneic and 14 autologous bone marrow grafts were processed with the Haemonetics V50 cell separator (Haemonetics Corp., Braintree, USA) for in vitro treatment with antibodies and cryopreservation respectively. The concentration of hemopoietic progenitor cells was performed without any sedimentation or density gradient agents. The recovery is given in percent (mean +/- sd) of the original marrow values: mononuclear cells (MNC) 74 +/- 10%, polymorphonuclear cells (PMC) 48 +/- 17%, red blood cells (RBC) 12 +/- 5%, granulocyte/monocyte progenitors (CFU-GM) 83 +/- 36%, and erythroid progenitors (BFU-E) 78 +/- 38%. The recovery of nucleated cells (NC) was 90 +/- 13% and the viability 82 +/- 11% after cryopreservation. The technique described provides a simple, rapid and efficient preparation of large bone marrow volumes for in vitro treatment and AB0-incompatible transplantation.

  7. Dynamic contrast-enhanced MR imaging of the water fraction of normal bone marrow and diffuse bone marrow disease

    Energy Technology Data Exchange (ETDEWEB)

    Katsuya, Tomoo; Inoue, Tomio; Ishizaka, Hiroshi; Aoki, Jun; Endo, Keigo [Gunma Univ., Maebashi (Japan). School of Medicine

    2000-10-01

    To clarify the contrast-enhancement pattern of the normal hematopoietic element by isolating the signal of the water fraction in vertebral bone marrow and to investigate whether this approach can be used to characterize bone marrow pathology in several diffuse bone marrow diseases. Two groups were examined: 30 normal healthy volunteers and 19 patients with primary diffuse bone marrow disease (aplastic anemia [n=8], myelodysplastic syndrome (MDS) [n=5], chronic myelogenic leukemia (CML) [n=4], polycythemia vera [n=2]). Isolation of the signal of hematopoietic tissue was done by the chemical-shift misregistration effect. Twenty consecutive T1-weighted midsagittal lumber vertebral images were obtained immediately after the intravenous administration of Gd-DTPA of 0.1 mmol/kg body weight, and the pattern of the time-intensity curve, the peak contrast-enhancement (CE) ratio, and the washout rate (%/min) of bone marrow in normal volunteers were compared with those in patients suffering from primary diffuse bone marrow disease. The pattern of the time-intensity curve of patients with aplastic anemia showed a low peak value followed by a slow washout. However, the pattern of time-intensity curves in patients with MDS, CML, and polycythemia vera was similar to that of normal volunteers. The peak CE ratio of the water fraction in normal marrow ranged from 0.45 to 1.26 (mean {+-}S.D.: 0.87{+-}0.18). Patients with aplastic anemia showed an abnormally lower peak CE ratio of the water fraction (mean {+-}S.D.: 0.34{+-}0.19, p<0.0001). On the other hand, the peak CE ratio of the water fraction in patients with MDS was significantly higher than that of normal volunteers (mean {+-}S.D. 1.35{+-}0.39, p<0.05). In contrast, the peak CE ratio of patients with CML or polycythemia vera did not differ significantly from that of normal volunteers. The mean washout rate of patients with aplastic anemia was significantly lower than that of normal volunteers (mean {+-}S.D.: 3.50{+-}2.51 %/min

  8. Biochemical markers of bone turnover and their association with bone marrow lesions

    NARCIS (Netherlands)

    Hunter, D.J.; LaValley, M.; Li, J.; Bauer, D.C.; Nevitt, M.; Groot, J. de; Poole, R.; Eyre, D.; Guermazi, A.; Gale, D.; Totterman, S.; Felson, D.T.

    2008-01-01

    Introduction: Our objective was to determine whether markers of bone resorption and formation could serve as markers for the presence of bone marrow lesions (BMLs). Methods: We conducted an analysis of data from the Boston Osteoarthritis of the Knee Study (BOKS). Knee magnetic resonance images were

  9. Bone marrow biopsy findings in brucellosis patients with hematologic abnormalities

    Institute of Scientific and Technical Information of China (English)

    Cengiz Demir; Mustafa Kasim Karahocagil; Ramazan Esen; Murat Atmaca; Hayriye G(o)nüllü; Hayrettin Akdeniz

    2012-01-01

    Background Brucellosis can mimic various multisytem diseases,showing wide clinical polymorphism that frequently leads to misdiagnosis and treatment delay,further increasing the complication rates.In this study,we aimed to examine bone marrow biopsy findings in brucellosis cases presenting with hematologic abnormalities.Methods Forty-eight brucellosis cases were prospectively investigated.Complaints and physical examination findings of patients were recorded.Patients' complete blood count,routine biochemical tests,erythrocyte sedimentation rate,C-reactive protein and serological screenings were performed.Bone marrow biopsy and aspiration was performed in patients with cytopenia,for bone marrow examination and brucella culture,in accordance with the standard procedures from spina iliaca posterior superior region of pelvic bone.Results Of the 48 patients,35 (73%) were female and 13 (27%) were male.Mean age was (34.8±15.4) years (age range:15-70 years).Anemia,leukopenia,thrombocytopenia and pancytopenia were found in 39 (81%),28 (58%),22 (46%) and 10 patients (21%),respectively.In the examination of bone marrow,hypercellularity was found In 35 (73%) patients.Increased megacariocytic,erythroid and granulocytic series were found in 28 (58%),15 (31%) and 5 (10%) patients,respectively.In addition,hemophagocytosis was observed in 15 (31%) patients,granuloma observed in 12 (25%) and increased eosinophil and plasma cells observed in 9 (19%) patients.Conclusion According to the results of our series,hemophagocytosis,microgranuloma formation and hypersplenism may be responsible for hematologic complications of brucellosis.

  10. Hyperfractionated high-dose total body irradiation in bone marrow transplantation for Ph{sup 1}-positive acute lymphoblastic leukemia

    Energy Technology Data Exchange (ETDEWEB)

    Kikuchi, Akira; Ebihara, Yasuhiro; Mitsui, Tetsuo [Tokyo Univ. (Japan). Hospital of the Institute of Medical Science] [and others

    1998-12-01

    In two cases of Philadelphia-positive childhood acute lymphoblastic leukemia (Ph{sup 1} ALL), we performed allogeneic bone marrow transplantation (AlloBMT) with preconditioning regimen, including hyperfractionated high-dose total body irradiation (TBI) (13.5 Gy, in 9 fractions). Their disease statuses at BMT were hematological relapse in case 1 and molecular relapse in case 2. Bone marrow donors were unrelated in case 1, and HLA was a partially mismatched mother in case 2. Regimen-related toxicity was tolerable in both cases. Hematological recovery was rapid, and engraftment was obtained on day 14 in case 1 and on day 12 in case 2. BCR/ABL message in bone marrow disappeared on day 89 in case 1 and on day 19 in case 2 and throughout their subsequent clinical courses. Although short-term MTX and Cy-A continuous infusion were used for GVHD prophylaxis, grade IV GVHD was observed in case 1 and grade III in case 2. Both cases experienced hemorrhagic cystitis because of adenovirus type 11 infection. Although case 1 died of interstitial pneumonitis on day 442, case 2 has been free of disease through day 231. AlloBMT for Ph{sup 1} ALL with preconditioning regimen including hyperfractionated high-dose TBI is considered to be worth further investigation. (author)

  11. Autologous Bone Marrow Stem Cells combined with Allograft Cancellous Bone in Treatment of Nonunion

    Directory of Open Access Journals (Sweden)

    Le Thua Trung Hau

    2015-12-01

    Full Text Available Autologous cancellous bone graft is currently used as a gold standard method for treatment of bone nonunion. However, there is a limit to the amount of autologous cancellous bone that can be harvested and the donor site morbidity presents a major disadvantage to autologous bone grafting. Embedding viable cells within biological scaffolds appears to be extremely promising. The purpose of this study was to assess the outcome of autologous bone marrow stem cells combined with a cancellous bone allograft as compared to an autologous bone graft in the treatment of bone nonunion. Bone marrow aspiration concentrate (BMAC was previously produced from bone marrow aspirate via a density gradient centrifugation. Autologous cancellous bone was harvested in 9 patients and applied to the nonunion site. In 18 patients of the clinical trial group after the debridement, the bone gaps were filled with a composite of BMAC and allograft cancellous bone chips (BMAC-ACB. Bone consolidation was obtained in 88.9 %, and the mean interval between the cell transplantation and union was 4.6 +/- 1.5 months in the autograft group. Bone union rate was 94.4 % in group of composite BMAC-ACB implantation. The time to union in BMAC-ACB grafting group was 3.3 +/- 0.90 months, and led to faster healing when compared to the autograft. A mean concentration of autologous progenitor cells was found to be 2.43 +/- 1.03 (x106 CD34+ cells/ml, and a mean viability of CD34+ cells was 97.97 +/- 1.47 (%. This study shows that the implantation of BMAC has presented the efficacy for treatment of nonunion and may contribute an available alternative to autologous cancellous bone graft. But large clinical application of BM-MSCs requires a more appropriate and profound scientific investigations. [Biomed Res Ther 2015; 2(12.000: 409-417

  12. Effects of prostaglandin on experimental bone malignancy and on scintigrams of bone and marrow

    International Nuclear Information System (INIS)

    The correlation between prostaglandin E (PgE) and scintigrams of bone (Tc-99m MDP) and bone marrow (Tc-99m SC) was investigated in normal and VX-2-bearing rabbits. PgE in plasma of normal rabbits was 486.2. In rabbits with VX-2 transplanted into femoral muscles, PgE was in the normal range unless the tumor invaded bone. PgE was not increase significantly in rabbits when the tumor was transplanted into the marrow cavity. When tumor invaded bone, PgE increassed markedly (to 1335). Elevation of PgE did not necessarily coincide with the appearance of positive bone scans. PgE in an indomethacin-treated group did not necessarily coincide with the appearance of positive bone scans. PgE in an indomethacin-treated group did not higher than in the untreated group. Indomethacin may suppress the local acceleration of calcium metabolism

  13. Bone marrow reconstitution of immune responses following irradiation in the leopard frog, Rana pipiens

    International Nuclear Information System (INIS)

    The bone marrow of Rana is an important source of cells capable of maintaining individual viability, responding to Concanavalin A (Con A) and producing PFC against sheep erythrocyte (SRBC) antigens. Frog marrow is more effective than the spleen in maintaining life. Radiation destroys the ability of frogs to respond to SRBC immunization (lack of bone marrow and spleen PFC, serum antibody) and bone marrow/spleen cells to respond to Con A, i.e., bone marrow and spleen contain radiation-sensitive cells. Shielding one hind leg during irradiation leads to reconstitution of bone marrow/spleen PFC responses, antibody synthesis and individual viability. Our results suggest that bone marrow is: a) the source of stem cells, and b) the source of mature T- and B- lymphocytes that can recirculate within the immune system

  14. Ethical issues in bone marrow transplantation in children.

    Science.gov (United States)

    Bendorf, Aric; Kerridge, Ian H

    2011-09-01

    In the 50 years since the first successful human bone marrow transplant (BMT) was performed in 1959, BMT has become the optimal therapy for a wide variety of life-threatening paediatric haematological, immunological and genetic disorders. Unfortunately, while BMT generally provides the only possibility of cure for such afflicted children, few (25%) have a matched sibling available, and suitably matched unrelated donors are often not identified for many children in need of BMT. And even where BMT is possible, treatment is complex and arduous and associated with significant mortality and morbidity. The issues raised when either or both the donor and recipient are children and lack the capacity to make informed and rational decisions relating to BMT pose great challenges for all involved. This paper examines some of the ethical dilemmas that confront patients, families and medical practitioners when considering bone marrow transplantation in a child. PMID:21951444

  15. Effect of 910-MHz Electromagnetic Field on Rat Bone Marrow

    Directory of Open Access Journals (Sweden)

    George Demsia

    2004-01-01

    Full Text Available Aiming to investigate the possibility of electromagnetic fields (EMF developed by nonionizing radiation to be a noxious agent capable of inducing genotoxicity to humans, in the current study we have investigated the effect of 910-MHz EMF in rat bone marrow. Rats were exposed daily for 2 h over a period of 30 consecutive days. Studying bone marrow smears from EMF-exposed and sham-exposed animals, we observed an almost threefold increase of micronuclei (MN in polychromatic erythrocytes (PCEs after EMF exposure. An induction of MN was also observed in polymorphonuclear cells. The induction of MN in female rats was less than that in male rats. The results indicate that 910-MHz EMF could be considered as a noxious agent capable of producing genotoxic effects.

  16. Differentiation of Bone Marrow Mesenchymal Cells to Neural Cells

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    To explore the possibility and condition of differentiation of bone marrow mesenchymal cells (BMSCs) to neural cells in vitro, BMSCs from whole bone marrow of rats were cultured. The BMSCs of passage 3 were identified with immunocytochemical staining of CD44 ( + ), CD71 ( + )and CD45(-). There were type Ⅰ and type Ⅱ cells in BMSCs. Type Ⅰ BMSCs were spindleshaped and strong positive in immunocytochemical staining of CD44 and CD71, whereas flat and big type Ⅱ BMSCs were lightly stained. The BMSCs of same passage were induced to differentiate into neural cells by β-mercaptoethanol (BME). After induction by BME, the type Ⅰ BMSCs withdrew to form neuron-like round soma and axon-like and dendrite-like processes, and were stained positively for neurofilament (NF). The type Ⅱ BMSCs did not change in the BME medium and were negatively or slightly stained of NF.

  17. A stochastic model of radiation-induced bone marrow damage

    Energy Technology Data Exchange (ETDEWEB)

    Cotlet, G.; Blue, T.E.

    2000-03-01

    A stochastic model, based on consensus principles from radiation biology, is used to estimate bone-marrow stem cell pool survival (CFU-S and stroma cells) after irradiation. The dose response model consists of three coupled first order linear differential equations which quantitatively describe time dependent cellular damage, repair, and killing of red bone marrow cells. This system of differential equations is solved analytically through the use of a matrix approach for continuous and fractionated irradiations. The analytic solutions are confirmed through the dynamical solution of the model equations using SIMULINK. Rate coefficients describing the cellular processes of radiation damage and repair, extrapolated to humans from animal data sets and adjusted for neutron-gamma mixed fields, are employed in a SIMULINK analysis of criticality accidents. The results show that, for the time structures which may occur in criticality accidents, cell survival is established mainly by the average dose and dose rate.

  18. Bone Marrow Stem Cell as a Potential Treatment for Diabetes

    Directory of Open Access Journals (Sweden)

    Ming Li

    2013-01-01

    Full Text Available Diabetes mellitus (DM is a group of metabolic diseases in which a person has high blood glucose levels resulting from defects in insulin secretion and insulin action. The chronic hyperglycemia damages the eyes, kidneys, nerves, heart, and blood vessels. Curative therapies mainly include diet, insulin, and oral hypoglycemic agents. However, these therapies fail to maintain blood glucose levels in the normal range all the time. Although pancreas or islet-cell transplantation achieves better glucose control, a major obstacle is the shortage of donor organs. Recently, research has focused on stem cells which can be classified into embryonic stem cells (ESCs and tissue stem cells (TSCs to generate functional β cells. TSCs include the bone-marrow-, liver-, and pancreas-derived stem cells. In this review, we focus on treatment using bone marrow stem cells for type 1 and 2 DM.

  19. Total lymphatic irradiation and bone marrow in human heart transplantation

    International Nuclear Information System (INIS)

    Six patients, aged 36 to 59 years, had heart transplants for terminal myocardial disease using total lymphatic irradiation (TLI) and donor bone marrow in addition to conventional therapy. All patients were poor candidates for transplantation because of marked pulmonary hypertension, unacceptable tissue matching, or age. Two patients are living and well more than four years after the transplants. Two patients died of infection at six and seven weeks with normal hearts. One patient, whose preoperative pulmonary hypertension was too great for an orthotopic heart transplant, died at 10 days after such a procedure. The other patient died of chronic rejection seven months postoperatively. Donor-specific tolerance developed in 2 patients. TLI and donor bone marrow can produce specific tolerance to donor antigens and allow easy control of rejection, but infection is still a major problem. We describe a new technique of administering TLI with early reduction of prednisone that may help this problem

  20. Bone marrow-derived stem cells and respiratory disease.

    Science.gov (United States)

    Jones, Carla P; Rankin, Sara M

    2011-07-01

    Adult bone marrow contains a number of discrete populations of progenitor cells, including endothelial, mesenchymal, and epithelial progenitor cells and fibrocytes. In the context of a range of diseases, endothelial progenitor cells have been reported to promote angiogenesis, mesenchymal stem cells are potent immunosuppressors but can also contribute directly to tissue regeneration, and fibrocytes have been shown to induce tissue fibrosis. This article provides an overview of the basic biology of these different subsets of progenitor cells, reporting their distinct phenotypes and functional activities. The differences in their secretomes are highlighted, and the relative role of cellular differentiation vs paracrine effects of progenitor cells is considered. The article reviews the literature examining the contribution of progenitor cells to the pathogenesis of respiratory disease, and discusses recent studies using bone marrow progenitor cells as stem cell therapies in the context of pulmonary hypertension, COPD, and asthma. PMID:21729891

  1. Biologic evaluation of radiocolloids for bone marrow scintigraphy

    International Nuclear Information System (INIS)

    The validity of a primate animal model for studying the in vivo distribution of various colloids was established. Computerized images from two adult baboons injected with technetium-99m labeled sulfur colloid, stannous phytate and microaggregated albumin were analyzed to give the relative uptake of radioactivity in the liver, spleen and bone marrow. These values were in good agreement with those previously established in several animal species and in man. Antimony sulfide colloid and minimicroaggregated albumin, each having a significantly smaller particle size than Tc-99m sulfur colloid were evaluated. Compared with sulfur colloid the minimicroaggregated albumin showed three times the bone marrow uptake (15 to 20%) whereas microaggregated albumin and antimony sulfide gave somewhat lower values (8 to 12%). The stannous phytate showed no improvement over Tc-99m sulfur colloid

  2. Isolation and Colony Formation of Murine Bone and Bone Marrow Cells.

    Science.gov (United States)

    McHaffie, Sophie; Chau, You-Ying

    2016-01-01

    Adult homeostasis is dependent on normal Wt1 expression. Loss of Wt1 expression in adult mice causes rapid loss of the mesenchymal tissues, fat and bone, amongst other phenotypes. Bone and bone marrow mesenchymal stromal cells can be studied by cell isolation and expansion. The stemness of these cells can then be characterized by carrying out a colony-forming unit-fibroblast assay and observing clonogenic capabilities. PMID:27417960

  3. Bone marrow injection: A novel treatment for tennis elbow

    OpenAIRE

    Singh, Ajit; Gangwar, Devendra Singh; Singh, Shekhar

    2014-01-01

    Objective: The objective of this prospective study was assessment of efficacy of bone marrow aspirate (BMA) (containing plasma rich in growth factors and mesenchymal stem cells) injection in treatment of tennis elbow. Materials and Methods: A total of 30 adult patients of previously untreated tennis elbow were administered single injection of BMA. This concentrate was made by centrifugation of iliac BMA at 2000 rpm for 20-30 min and only upper layer containing platelet rich plasma and mononuc...

  4. Preparing the patient for bone marrow transplantation: nursing care issues.

    OpenAIRE

    Holmes, W.

    1990-01-01

    The phases of bone marrow transplantation can be identified as the pre-transplant period, the immediate post-transplant period, and the late post-transplant period. The pre-transplant period is characterized by identification of the appropriate type of transplant to be done and, if necessary, finding an appropriate donor; entry of the patient into the transplant unit; administration of the preparative chemotherapy/irradiation regime; management of early toxicities; and pre-transplant supporti...

  5. Psychological Impact of Bone Marrow Transplantation: Current Perspectives

    OpenAIRE

    Patenaude, Andrea Farkas

    1990-01-01

    Despite advances in bone marrow transplant technology, major psychological stresses remain. Donor selection has become psychologically more complex with the option of seeking an unrelated donor. Family dislocation continues to be necessary for many families despite the proliferation of transplant centers. The range of choices between treatment options, level of room sterility, and the like can leave families open to guilt about their choices. Unpredictability of the transplant course, difficu...

  6. Fatal adenovirus 32 infection in a bone marrow transplant recipient.

    OpenAIRE

    Charles, A K; Caul, E. O.; Porter, H J; Oakhill, A

    1995-01-01

    A case of disseminated adenovirus type 32 infection causing severe hepatitis, gastrointestinal ulceration and also with respiratory involvement is reported in a bone marrow transplant recipient. Typical viral inclusions were seen in the postmortem histological sections and adenovirus infection was confirmed using in situ hybridisation and isolation of adenovirus type 32 from separate organs at necropsy. This is the first case in which adenovirus 32 was the cause of fatal disseminated disease ...

  7. Successful nonsibling bone marrow transplantation in severe combined immunodeficiency

    DEFF Research Database (Denmark)

    Ramsøe, K; Skinhøj, P; Andersen, V;

    1978-01-01

    Severe combined immunodeficiency (SCID) was diagnosed in a girl immediately after birth; her older brother had SCID and was successfully reconstituted by bone marrow transplantation from his uncle. She was isolated in a laminar air flow bench and decontaminated. The father differed by one HLA-A a......A); tests of cell-mediated immunity are normal. Apart from slight upper respiratory infections, the patient has been healthy. Physical and psychological development have been normal....

  8. Ovarian function after bone marrow transplantation performed before menarche

    OpenAIRE

    Matsumoto, M.; Shinohara, O; Ishiguro, H; Shimizu, T; Hattori, K.; Ichikawa, M; Yabe, H.; Kubota, C.; M. Yabe; Kato, S.

    1999-01-01

    AIM—To examine the long term effect of bone marrow transplantation (BMT) on ovarian function in girls.
METHODS—Eighteen girls who underwent BMT before menarche, had been disease free for more than six years, and were over 14 years of age at the time of study were investigated. The preparative regimen consisted of irradiation and chemotherapy. The occurrence of menarche and changes in basal serum follicle stimulating hormone (FSH) concentrations were studied.
RESULTS—Twelv...

  9. Disseminated Microascus cirrosus infection in pediatric bone marrow transplant recipient.

    OpenAIRE

    Krisher, K K; Holdridge, N B; M. M. Mustafa; Rinaldi, M. G.; McGough, D A

    1995-01-01

    Microascus cirrosus Curzi and its associated anamorphic state, Scopulariopsis, were recovered from the cutaneous lesion of a 12-year-old male who had undergone an autologous bone marrow transplantation for acute myelogenous leukemia. Histopathology sections from the biopsied lesion demonstrated septate hyphae consistent with a fungal etiology. Radiographic studies of the lungs subsequent to progression of the lesion revealed a consolidation in the right upper lobe suggesting a primary focus o...

  10. Diagnostic impact of bone marrow histopathology in polycythemia vera (PV)

    OpenAIRE

    Thiele, J; Kvasnicka, H M

    2005-01-01

    The criteria of the Polycythemia Vera Study Group (PVSG), although acknowledged as the gold standard to establish the diagnosis of polycythemia vera (PV), do not regard bone marrow (BM) histopathology. Arguments include the existence of sufficient objective markers of disease and the lack of independently performed morphological studies or standardized criteria. The aim of this review is to evaluate morphological characteristics of erythrocytosis and to det...

  11. Regulation of Hematopoietic Stem Cells by Bone Marrow Stromal Cells

    OpenAIRE

    Anthony, Bryan; Link, Daniel C.

    2013-01-01

    Hematopoietic stem cells (HSCs) reside in specialized microenvironments (niches) in the bone marrow. The stem cell niche is thought to provide signals that support key HSC properties, including self-renewal capacity and long-term multilineage repopulation ability. The stromal cells that comprise the stem cell niche and the signals that they generate that support HSC function are the subjects of intense investigation. Here we review the complex and diverse stromal cell populations that reside ...

  12. Megakaryocytic alterations in thrombocytopenia: A bone marrow aspiration study

    Directory of Open Access Journals (Sweden)

    Muhury Manas

    2009-10-01

    Full Text Available Context: Dysplastic changes are well documented in myelodysplastic syndromes (MDS. However, they are also observed in non-MDS hematological conditions. Aims: To evaluate the megakaryocytic alterations in the bone marrow aspirations in cases of non-MDS related thrombocytopenia. Setting and Design: A prospective study of 144 bone marrow aspirates was conducted in the department of pathology, Kasturba Medical College, Mangalore. The aspirates were studied to assess the number and morphology of the megakaryocytes in non-MDS related thrombocytopenia and evaluate their significance when compared to changes in MDS. Materials and Methods: The bone marrow aspiration smears were stained with Leishman stain and examined under light microscope. Statistical Analysis Used: Fisher′s exact test. A P value less than 0.05 was considered significant. Sensitivity and specificity was calculated for those features which were significant in the relevant hematological disorders. Results: The sensitivity of immature megakaryocytes, dysplastic forms and micromegakaryocytes in cases of immune thrombocytopenic purpura was 100%, 89% and 42% respectively. The specificity of emperipolesis was 74%. In cases of infection-associated thrombocytopenia, immature megakaryocytes had a sensitivity of 100% and cytoplasmic vacuolization were 86% specific. The sensitivity of the dysplastic forms in megaloblastic anemia was 75%. However, no platelet budding was observed. The presence of micromegakaryocyte had a specificity of 83% in MDS, and was statistically significant when compared to cases of non-MDS conditions (P< 0.05. Conclusions: Careful understanding of the morphological changes of megakaryocytes in bone marrow aspirates can improve the diagnostic accuracy for a wide range of hematological disorders thereby enabling proper therapeutic interventions.

  13. PANCYTOPENIA - CLINICO - HAEMATOLOGICAL STUDIES OF BONE MARROW EXAMINATION

    Directory of Open Access Journals (Sweden)

    Rajendra Kumar

    2013-11-01

    Full Text Available Pancytopenia is an important clinicohematological entity having varying presentations and underlying cause ranging from megaloblastic anemia to fatal bone marrow aplasia and leukemias. Underlying pathol ogy determines the treatment and prognosis.In majority of cases it is megaloblastic anemia which is readily treatable. OBJECTIVE : In our country causes of pancytopenia are not very well defined especially in Central India, so the present study has been und ertaken to evaluate various causes and to co r relate the peripheral blood finding with bone marrow. MATERIAL AND METHOD: It was a retrospective study of 155 cases pre se nted with pancytopenia and evaluated clinically with hematological parameters and bone ma rrow aspiration in Department of Pathology, Gandhi Medical College, Bhopal during the period 2009 - 2012 . RESULTS: Among 155 cases studied , age ranged from 2 - 80 years with mean age of 28 years with preponderance in male under 14 years age and female in 20 - 40 years age group. Generalised weakness and pallor were noted in all cases. Other common presentations were fever followed by bleeding manifestations. Splenomegaly was more common followed by hepatomegaly . Majority of patients had severe anemia, h a emoglobi n<5 gm% , platel et count<50,0000 /cumm. Bone marrow examination concluded most common cause was megaloblasticanemia(43.2% followed by hypoplastic anemia(12.9%. CONCLUSION: The present study concludes that detailed hematological investigations along with bo ne marrow examination in pancytopenic patients is helpful to diagnose or rule out the causes of pancytopenia and further planning of investigation and management .

  14. Primary cutaneous aspergillosis and idiopathic bone marrow aplasia*

    Science.gov (United States)

    Furlan, Karina Colossi; Pires, Mario Cezar; Kakizaki, Priscila; Chartuni, Juliana Cabral Nunes; Valente, Neusa Yuriko Sakai

    2016-01-01

    We describe the case of a 9-year-old boy with idiopathic bone marrow aplasia and severe neutropenia, who developed skin ulcers under cardiac monitoring electrodes. The diagnosis of primary cutaneous aspergillosis was made after the second biopsy and culture. Imaging investigation did not reveal internal fungal infection. The child was treated, but did not improve and died 3 months after admission. The report highlights and discusses the preventable risk of aspergillus skin infection in immunocompromised patients. PMID:27438213

  15. Nutritional therapy during bone marrow transplantation. An overview

    OpenAIRE

    Normén, Lena; Bosaeus, Ingvar; Ekman, Tor

    1996-01-01

    Bone marrow transplantation (BMT) is a treatment which often results in nutritional complications. Common conditions affecting dietary intake are mucosal membrane injuries, nausea, vomiting and anorexia. Dietary advice is therefore a necessary part of treatment. The diet situation is complicated by the abscence of international dietary guidelines for BMT. The dietary approach varies between hospitals. Most commonly patients receive sterile, low-microbial, modified or normal diet. In Sweden al...

  16. Transplantation? Peripheral Stem Cell/Bone Marrow/Cord Blood

    Directory of Open Access Journals (Sweden)

    Itır Sirinoglu Demiriz

    2012-01-01

    Full Text Available The introduction of peripheral stem cell (PSC and cord blood (CB as an alternative to bone marrow (BM recently has caused important changes on hematopoietic stem cell transplantation (HSCT practice. According to the CIBMTR data, there has been a significant decrease in the use of bone marrow and increase in the use of PSC and CB as the stem cell source for HSCT performed during 1997–2006 period for patients under the age of 20. On the other hand, the stem cell source in 70% of the HSCT procedures performed for patients over the age of 20 was PSC and the second most preferred stem cell source was bone marrow. CB usage is very limited for the adult population. Primary disease, stage, age, time and urgency of transplantation, HLA match between the patient and the donor, stem cell quantity, and the experience of the transplantation center are some of the associated factors for the selection of the appropriate stem cell source. Unfortunately, there is no prospective randomized study aimed to facilitate the selection of the correct source between CB, PSC, and BM. In this paper, we would like to emphasize the data on stem cell selection in light of the current knowledge for patient populations according to their age and primary disease.

  17. Bone marrow leishmaniasis: a review of situation in Thailand.

    Science.gov (United States)

    Wiwanitkit, Viroj

    2011-10-01

    Leishmaniasis is an important tropical vector-borne disease. This infection can be seen in tropical area and it is considered to be one of the most important vector-borne infections at present. The general situation of the leishmaniasis in Thailand is hereby reviewed. Although Thailand is a tropical country, the leishmaniasis is not endemic but sporadic. The imported cases are documented in some literatures. The serious form of leishmaniasis, the visceral leishmaniasis is also detectable in Thailand. Also, the author performed an in depth literature review of the reports of bone marrow leishmaniasis, a specific kind of visceral leishmaniasis, in Thailand in order to summarize the characteristics of this infection among Thai patients. According to this review, there have been at least 5 reports in the literature of 6 cases of bone marrow leishmaniasis in the Thai population, of which no case was lethal. Concerning the clinical manifestations, all except had prolonged fever with unknown origin. From physical examination, all had hepatosplenomegaly. The striking findings were active hemophagocytosis with increased proliferation of lymphoidplasma cell line in the bone marrow and amastigotes of Leishmania donovani was demonstrated. Considering the treatment, pantavalent antimony compound was used and the excellent improvement and complete recovery. Finally, the author also discussed on the importance of leishmaniasis in Thailand relating to the present globalization and good traveling system.

  18. Differentiation of rat bone marrow stem cells in liver after partial hepatectomy

    Institute of Scientific and Technical Information of China (English)

    Yu-Tao Zhan; Yu Wang; Lai Wei; Bin Liu; Hong-Song Chen; Xu Cong; Ran Fei

    2006-01-01

    AIM: To investigate the differentiation of rat bone marrow stem cells in liver after partial hepatectomy.METHODS: Bone marrow cells were collected from the tibia of rat with partial hepatectomy, the medial and left hepatic lobes were excised. The bone marrow stem cells (Thy+CD3-CD45RA- cells) were enriched from the bone marrow cells by depleting red cells and fluorescence-activated cell sorting. The sorted bone marrow stem cells were labeled by PKH26-GL in vitro and autotransplanted by portal vein injection. After 2wk, the transplanted bone marrow stem cells in liver were examined by the immunohistochemistry of albumin (hepatocyte-specific marker).RESULTS: The bone marrow stem cells (Thy+CD3-CD45RA- cells) accounted for 2.8% of bone marrow cells without red cells. The labeling rate of 10μM PKH26-GL on sorted bone marrow stem cells was about 95%.There were sporadic PKH26-GL-labeled cells among hepatocytes in liver tissue section, and some of the cells expressed albumin.CONCLUSION: Rat bone marrow stem cells can differentiate into hepatocytes in regenerative environment and may participate in liver regeneration after partial hepatectomy.

  19. Are bone marrow regenerative cells ideal seed cells for the treatment of cerebral ischemia?

    Institute of Scientific and Technical Information of China (English)

    Yi Li; Xuming Hua; Fang Hua; Wenwei Mao; Liang Wan; Shiting Li

    2013-01-01

    Bone marrow cells for the treatment of ischemic brain injury may depend on the secretion of a large number of neurotrophic factors. Bone marrow regenerative cells are capable of increasing the secretion of neurotrophic factors. In this study, after tail vein injection of 5-fluorouracil for 7 days, bone marrow cells and bone marrow regenerative cells were isolated from the tibias and femurs of rats, and then administered intravenously via the tail vein after focal cerebral ischemia. Immunohistological staining and reverse transcription-PCR detection showed that transplanted bone marrow cells and bone marrow regenerative cells could migrate and survive in the ischemic regions, such as the cortical and striatal infarction zone. These cells promote vascular endothelial cell growth factor mRNA expression in the ischemic marginal zone surrounding the ischemic penumbra of the cortical and striatal infarction zone, and have great advantages in promoting the recovery of neurological function, reducing infarct size and promoting angiogenesis. Bone marrow regenerative cells exhibited stronger neuroprotective effects than bone marrow cells. Our experimental findings indicate that bone marrow regenerative cells are preferable over bone marrow cells for cell therapy for neural regeneration after cerebral ischemia. Their neuroprotective effect is largely due to their ability to induce the secretion of factors that promote vascular regeneration, such as vascular endothelial growth factor.

  20. Bone Marrow Stromal Cell Intraspinal Transplants Fail to Improve Motor Outcomes in a Severe Model of Spinal Cord Injury.

    Science.gov (United States)

    Brock, John H; Graham, Lori; Staufenberg, Eileen; Collyer, Eileen; Koffler, Jacob; Tuszynski, Mark H

    2016-06-15

    Bone marrow stromal cells (BMSCs) have been reported to exert potential neuroprotective properties in models of neurotrauma, although precise mechanisms underlying their benefits are poorly understood. Despite this lack of knowledge, several clinical trials have been initiated using these cells. To determine whether local mechanisms mediate BMSC neuroprotective actions, we grafted allogeneic BMSCs to sites of severe, compressive spinal cord injury (SCI) in Sprague-Dawley rats. Cells were administered 48 h after the original injury. Additional animals received allogeneic MSCs that were genetically modified to secrete brain-derived neurotrophic factor (BDNF) to further determine whether a locally administered neurotrophic factor provides or extends neuroprotection. When assessed 2 months post-injury in a clinically relevant model of severe SCI, BMSC grafts with or without BDNF secretion failed to improve motor outcomes. Thus, allogeneic grafts of BMSCs do not appear to act through local mechanisms, and future clinical trials that acutely deliver BMSCs to actual sites of injury within days are unlikely to be beneficial. Additional studies should address whether systemic administration of BMSCs alter outcomes from neurotrauma.

  1. The effect of mixed infusion of bone marrow cells and bone marrow stromal cells on hematopoietic reconstitution in lethally irradiated mice

    International Nuclear Information System (INIS)

    To observe the effect of mixed infusion of bone marrow and bone marrow stromal cells on hematopoietic reconstitution in lethally irradiated mice, Balb/c mice irradiated lethally received 1 x 107 syngeneic bone marrow cells and 2 x 105 syngeneic bone marrow stromal cells via the intravenous route. As compared with the simple BMT group, the WBC and the BPC in peripheral blood in mixed infusion group recover more quickly on day 14 after BMT and BMSCT. The numbers of CFU-GM, BFU-E, CFU-E, CFU-S in mixed infusion group are higher than that of the simple BMT group on day 15 and day 20 after BMT and BMSCT. Conclusion: Primary cultured bone marrow stromal cells not only is transplantable , but also can accelerate hematopoietic reconstitution

  2. Mycobacterium tuberculosis Contaminant Risk on Bone Marrow Aspiration Material from Iliac Bone Patients with Active Tuberculous Spondylitis

    OpenAIRE

    Ahmad Jabir Rahyussalim; Tri Kurniawati; Andriansjah Rukmana

    2016-01-01

    There was a concern on Mycobacterium tuberculosis spreading to the bone marrow, when it was applied on tuberculous spine infection. This research aimed to study the probability of using autologous bone marrow as a source of mesenchymal stem cell for patients with tuberculous spondylitis. As many as nine patients with tuberculous spondylitis were used as samples. During the procedure, the vertebral lesion material and iliac bone marrow aspirates were obtained for acid fast staining, bacteria c...

  3. Hemopoietic precursor-cells in radiation chimeras restored by bone marrow of adult thymectomized mice

    International Nuclear Information System (INIS)

    Radioprotective capacity of bone marrow CFUs of adult thymectomized mice was studied. Lethaly irradiated mice were inoculated with bone marrow of mice thymectomized 8-11 months before. The colony forming capacity and proliferative rate of CFUs were studied 1-7.5 months after obtaining the radiation chimeras. It has been shown that proliferative capacity of bone marrow of adult thymectomized mice was reduced in comparison with that of normal animals. We also found that the content of CFUs in bone of those chimeras was reduced later - after 7.5 months. In this period (1-7.5 months) the cellularity of bone marrow did not change

  4. Diagnosis and monitoring of bone marrow involvement in Hodgkin's lymphoma using magnetic resonance imaging

    Directory of Open Access Journals (Sweden)

    Z. N. Shavladze

    2012-01-01

    Full Text Available In 42 patients with verified Hodgkin lymphoma and confirmed metastatic skeletal lesion possibility of using specific pulse sequences in imaging of bone marrow involvement have been established. MRI pattern of bone marrow lesion, signal localization, distribution and intensity were revealed. In 33 patients with newly diagnosed bone lesions the MR images of the affected and intact bone marrow during chemotherapy were assessed during 10 months. In 2 patients MR images were assessed after radiotherapy. Several MRI patterns changes of affected bone marrow after 2, 6 and 8 chemotherapy cycles were identified.

  5. Peripheral blood stem cell graft compared to bone marrow after reduced intensity conditioning regimens for acute leukemia: a report from the ALWP of the EBMT

    Science.gov (United States)

    Savani, Bipin N.; Labopin, Myriam; Blaise, Didier; Niederwieser, Dietger; Ciceri, Fabio; Ganser, Arnold; Arnold, Renate; Afanasyev, Boris; Vigouroux, Stephane; Milpied, Noel; Hallek, Michael; Cornelissen, Jan J.; Schwerdtfeger, Rainer; Polge, Emmanuelle; Baron, Frédéric; Esteve, Jordi; Gorin, Norbert C.; Schmid, Christoph; Giebel, Sebastian; Mohty, Mohamad; Nagler, Arnon

    2016-01-01

    Increasing numbers of patients are receiving reduced intensity conditioning regimen allogeneic hematopoietic stem cell transplantation. We hypothesized that the use of bone marrow graft might decrease the risk of graft-versus-host disease compared to peripheral blood after reduced intensity conditioning regimens without compromising graft-versus-leukemia effects. Patients who underwent reduced intensity conditioning regimen allogeneic hematopoietic stem cell transplantation from 2000 to 2012 for acute leukemia, and who were reported to the Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation were included in the study. Eight hundred and thirty-seven patients receiving bone marrow grafts were compared with 9011 peripheral blood transplant recipients after reduced intensity conditioning regimen. Median follow up of surviving patients was 27 months. Cumulative incidence of engraftment (neutrophil ≥0.5×109/L at day 60) was lower in bone marrow recipients: 88% versus 95% (P<0.0001). Grade II to IV acute graft-versus-host disease was lower in bone marrow recipients: 19% versus 24% for peripheral blood (P=0.005). In multivariate analysis, after adjusting for differences between both groups, overall survival [Hazard Ratio (HR) 0.90; P=0.05] and leukemia-free survival (HR 0.88; P=0.01) were higher in patients transplanted with peripheral blood compared to bone marrow grafts. Furthermore, peripheral blood graft was also associated with decreased risk of relapse (HR 0.78; P=0.0001). There was no significant difference in non-relapse mortality between recipients of bone marrow and peripheral blood grafts, and chronic graft-versus-host disease was significantly higher after peripheral blood grafts (HR 1.38; P<0.0001). Despite the limitation of a retrospective registry-based study, we found that peripheral blood grafts after reduced intensity conditioning regimens had better overall and leukemia-free survival than bone marrow grafts. However

  6. Usefulness of bone marrow magnetic resonance imaging and indium-111-chloride bone marrow scintigraphy in patients with various hematological diseases

    International Nuclear Information System (INIS)

    This study investigated the ability of magnetic resonance (MR) imaging and indium-111 chloride (In-111) scintigraphy to assess bone marrow in various hematological lesions. The subjects were 7 with aplastic anemia (AA), 4 with myelodysplastic syndrome (MDS), 3 with polycythemia (PC), 3 with essential thrombocythemia (ET), 2 with multiple myeloma (MM), 2 with monoclonal gammopathy of undetermined significance (MGUS), 3 with idiopathic thrombocytopenic purpura (ITP), one with acute lymphocytic leukemia (ALL), and one with secondary anemia due to chronic inflammation (SA). Bone marrow cellularity was assessed on MR images and both uptake and tissue distribution were assessed on In-111 scintigraphy. Hypo-cellularity was seen in all AA patients, but not seen in any other patient in each group. On the other hand, hyper-cellularity was seen in 3 MDS, one PC, all 3 ET, one ALL, and one SA patients. In the group of MM, the vertebral body was seen as heterogenous signal intensity on MR images. Bone marrow was seen as iso-intensity in one MDS, 2 PC, all 2 MGUS, and all 3 ITP patients. In-111 scintigraphy showed decrease or disappearance of tracer uptake and decreased tissue distribution in all 7 AA, one MDS, one PC, and one ALL patients. Increased tracer uptake and enlarged tissue distribution were seen in one MDS, one PC, and one SA patients. One MDS, one ET, all 2 MM, all 2 MGUS, all 3 ITP patients had tracer uptake and tissue distribution that were equal to those in the normal tissues. Since MR imaging and In-111 scintigraphy provided qualitatively different information, the combination of both modalities would contribute to the understanding of bone marrow condition in hematopoietic diseases. (N.K.)

  7. Usefulness of bone marrow magnetic resonance imaging and indium-111-chloride bone marrow scintigraphy in patients with various hematological diseases

    Energy Technology Data Exchange (ETDEWEB)

    Kobayashi, Yutaka; Umekawa, Tsunekazu; Chikayama, Satoshi [Osaka General Hospital of West Japan Railway Compapy (Japan)] [and others

    1995-03-01

    This study investigated the ability of magnetic resonance (MR) imaging and indium-111 chloride (In-111) scintigraphy to assess bone marrow in various hematological lesions. The subjects were 7 with aplastic anemia (AA), 4 with myelodysplastic syndrome (MDS), 3 with polycythemia (PC), 3 with essential thrombocythemia (ET), 2 with multiple myeloma (MM), 2 with monoclonal gammopathy of undetermined significance (MGUS), 3 with idiopathic thrombocytopenic purpura (ITP), one with acute lymphocytic leukemia (ALL), and one with secondary anemia due to chronic inflammation (SA). Bone marrow cellularity was assessed on MR images and both uptake and tissue distribution were assessed on In-111 scintigraphy. Hypo-cellularity was seen in all AA patients, but not seen in any other patient in each group. On the other hand, hyper-cellularity was seen in 3 MDS, one PC, all 3 ET, one ALL, and one SA patients. In the group of MM, the vertebral body was seen as heterogenous signal intensity on MR images. Bone marrow was seen as iso-intensity in one MDS, 2 PC, all 2 MGUS, and all 3 ITP patients. In-111 scintigraphy showed decrease or disappearance of tracer uptake and decreased tissue distribution in all 7 AA, one MDS, one PC, and one ALL patients. Increased tracer uptake and enlarged tissue distribution were seen in one MDS, one PC, and one SA patients. One MDS, one ET, all 2 MM, all 2 MGUS, all 3 ITP patients had tracer uptake and tissue distribution that were equal to those in the normal tissues. Since MR imaging and In-111 scintigraphy provided qualitatively different information, the combination of both modalities would contribute to the understanding of bone marrow condition in hematopoietic diseases. (N.K.).

  8. Effects of prostaglandin on experimental bone malignancy and on scintigrams of bone and marrow

    International Nuclear Information System (INIS)

    The correlation between prostaglandin E (PgE) and scintigrams of bone (Tc-99m MDP) and bone marrow (Tc-99m SC) was investigated in normal and VX-2-bearing rabbits. PgE in plasma of normal rabbits was 486.2 +/- 185.7 pg/ml (n . 86) and the maximum-to-minimum (max/min) ratio was 1.85 +/- 0.26 at 4 wk after tumor implantation. In rabbits with VX-2 transplanted into femoral muscles, PgE was in the normal range unless the tumor invaded bone. PgE did not increase significantly in rabbits when the tumor was transplanted into the marrow cavity. When tumor invaded bone, PgE increased markedly (to 1335 +/- 584 pg/ml). Elevation of PgE did not necessarily coincide with the appearance of positive bone scans. PgE in an indomethacin-treated group was not higher than in the untreated group. There was no significant difference between the two groups regarding the time of appearance of abnormal bone scans. However, when the number of transplanted cells in the bone marrow was reduced, the treatment with indomethacin delayed the increase in tracer uptake in the affected bone and resulted in a photon-deficient area. Indomethacin may suppress the local acceleration of calcium metabolism

  9. Radiography and bone scintigraphy in bone marrow transplant multiple myeloma patients

    International Nuclear Information System (INIS)

    Purpose: To compare conventional radiography and bone scintigraphy in relation to clinical outcome in bone marrow transplant multiple myeloma patients. Material and Methods: A total of 70 radiographies and 70 bone scintigraphies were compared in 35 patients. Results: The skull, the extremities, the iliac and public bones were better assessed with radiography. For new vertebral lesions and for lesions in the ribs and sternum, bone scintigraphy proved superior. For the sacrum, the methods were equal. When bone scintigraphy was used as a complement to radiography, 4% more pathological sites were found. No patient had both a normal radiography and a pathological bone scintigraphy, but 5 patients had both a normal bone scintigraphy and a pathological radiography. The results of the radiological examinations did not always correlate with the clinician's grading of the patient's disease. The radiological examinations had no prognostic value for the 7 patients examined on several occasions. Conclusion: The ability of conventional radiography and bone scintigraphy to disclose myeloma lesions varies, depending on location and size of the lesions. Radiography should remain the primary examination modality also for bone marrow transplant multiple myeloma patients. Bone scintigraphy can severe as a complement for investigating unexplained pain, e.g. caused by lesions in vertebrae or ribs. (orig.)

  10. Age-related distribution of vertebral bone-marrow diffusivity

    International Nuclear Information System (INIS)

    Purpose: To determine age-related diffusivity changes of the lumbar bone marrow by measurement of apparent diffusion coefficient (ADC) values. Materials and methods: The local ethics committee approved this study and written informed consent was obtained. The study group comprised 88 individuals including 75 healthy volunteers and 13 patients (48 female, 40 male; mean age 36 years, range 0–84 years). The pediatric cases were recruited from patients. Echo-planar diffusion weighted imaging (DWI) was performed with b-values of 50, 400 and 800 s/mm2. ADC-values were calculated and measured in the 1st and 2nd vertebral body of the lumbar spine. Correlation between age and ADC-values was analyzed with Spearman's rho test. Results: The ADC values of the vertebral bone marrow of the lumbar spine showed a significant negative correlation with age (rho = −0.398, p = 0.001). The mean ADC values (×10−3 mm2/s) in the age groups 0–29 years (mean age 18.0 years, n = 42) and 30–88 years (mean age 51.6 years, n = 46) were 0.54 ± 0.07 and 0.47 ± 0.08, respectively (p < 0.001, T-test). No significant differences were found between children and young adults. Conclusion: Bone marrow ADC values of the lumbar spine show a linear decrease with growing age and thereby reflect the gradual changes of cell composition occurring during marrow conversion.

  11. MR imaging fails to detect bone marrow oedema in osteomyelitis: report of two cases

    International Nuclear Information System (INIS)

    Bone marrow oedema is the earliest and most sensitive sign in diagnostic imaging of osteomyelitis. In the two demonstrated cases of acute and chronic osteomyelitis, MRI was not able to detect bone marrow oedema due to accompanying haemosiderosis and sclerosis surrounding a bone abscess. (orig.)

  12. MR imaging fails to detect bone marrow oedema in osteomyelitis: report of two cases

    Energy Technology Data Exchange (ETDEWEB)

    Wingen, M.; Alzen, G.; Guenther, R.W. [Technische Hochschule Aachen (Germany). Dept. of Diagnostic Radiology

    1998-03-01

    Bone marrow oedema is the earliest and most sensitive sign in diagnostic imaging of osteomyelitis. In the two demonstrated cases of acute and chronic osteomyelitis, MRI was not able to detect bone marrow oedema due to accompanying haemosiderosis and sclerosis surrounding a bone abscess. (orig.)

  13. ENRICHMENT AND CHARACTERIZATION OF THYMUS-REPOPULATING CELLS IN STROMA-DEPENDENT CULTURES OF RAT BONE-MARROW

    NARCIS (Netherlands)

    PRAKAPAS, Z; DENOYELLE, M; DARGEMONT, C; KROESE, FGM; THIERY, JP; DEUGNIER, MA

    1993-01-01

    The bone marrow precursor cells seeding the thymus have been difficult to investigate using fresh bone marrow and in vivo thymus reconstitution assays. We have therefore designed a short-term bone marrow culture system allowing the study of thymus-repopulating cells in the marrow microenvironment. L

  14. Vertebral plate regeneration induced by radiation-sterilized allogeneic bone sheets in sheep

    Institute of Scientific and Technical Information of China (English)

    TANG Xin; SUN Shi-quan; YU Cong-nian; YANG Shu-hua; XU Wei-hua; LI Jin; YANG Cao; YE Zhe-wei; FU De-hao; LI Kun; LI Bao-xing

    2007-01-01

    Objective:To evaluate the effects and mechanism of radiation-sterilized allogeneic bone sheets in inducing vertebral plate regeneration after laminectomy in sheep. Methods:Twelve adult male sheep (aged 1.5 years and weighing 27 kg on average ) provided by China Institute for Radiation Protection underwent L3-4 and L4-5 laminectomy.Then they were randomly divided into two groups:Group A (n =6) and Group B (n =6).The operated sites of L4-5 in Group A and L3-4 in Group B were covered by "H-shaped" freeze-drying and radiationsterilized allogeneic bone sheets ( the experimental segments),while the operated sites of L3-4 in Group A and L4-5 in Group B were uncovered as the self controls ( the control segments ). The regeneration process of the vertebral plate and the adhesion degree of the dura were observed at 4,8,12,16,20 and 24 weeks after operation.Xray and CT scan were performed in both segments of L3-4 and L4-5 at 4 and 24 weeks after operation. Results:In the experimental segments,the bone sheets were located in the anatomical site of vertebral plate,and no lumbar spinal stenosis or compression of the dura was observed.The bone sheets were absorbed gradually and fused well with the regenerated vertebral plate.While in the control segments,the regeneration of vertebral plate was not completed yet,the scar was inserted into the spinal canal,compressing the dura and the spinal cord,and the epidural area almost disappeared. Compared with the control segments, the dura adhesion degree in the experimental regenerated segments was much milder (P <0.01 ),the internal volume of the vertebral canal had no obvious change and the shape of the dura sack remained well without obvious compression. Conclusions:Freeze-drying and radiation-sterilized allogeneic bone sheets are ideal materials for extradural laminoplasty due to their good biocompatibility,biomechanical characteristics and osteogenic ability.They can effectively reduce formation of post-laminectomy scars

  15. Bone marrow transplantation for girls with aplastic anemia utilizing modified field of total lymphoid irradiation and cyclophosphamide

    International Nuclear Information System (INIS)

    A preparative regimen for allogeneic bone marrow transplantation, consisting of total lymphoid irradiation (TLI) with 750 cGy and cyclophosphamide (CY), was used in five girls with aplastic anemia. All patients received bone marrow from HLA matched/mixed lymphocyte culture negative siblings. In our regimen the 'inverted Y' field to irradiate the pelvic nodes was modified, which did not include the whole pelvic cavity in an attempt to protect the ovaries from irradiation. Although some of the pelvic nodes was supported not to be irradiated in order to protect the ovaries, engraftment occurred in all five patients including four who had been transfused prior to transplantation. All five are alive from 47 days to 1378 days (median 285 days) after transplantation without tranplantation-associated complications. The calculated dose to the ovaries was sixteen percent of the entire dose of the regimen. Both of the two evaluable patients that had received tranplantation just before or during the puberty are developing normal sex maturity including menstruation. This study suggests that our preparative regimen is effective not only for engraftment of the donor marrow but also for protecting the ovaries from irradiation. (author)

  16. Technical modifications in hyperfractionated total body irradiation for T-lymphocyte deplete bone marrow transplant

    International Nuclear Information System (INIS)

    The Medical College of Wisconsin implemented a major bone marrow transplant (BMT) program in July 1985. The type of transplants to be focused on were allogeneic T-lymphocyte deplete. Total body irradiation (TBI) was initially patterned after the Memorial method. Patients received total body irradiation in a sitting position at a dose rate of 20-25 cGy/minute with 50% attenuation lung blocks used both anterior/posterior and posterior/anterior. Electron boosting was utilized for the ribs beneath the lung blocks. Occasionally, lower extremity boosting was required because of the sitting position. A dose of 14 Gy was chosen since T-lymphocyte deplete bone marrow transplant data suggest the need for higher total doses to consistently obtain engraftment. This dose was given in 3 equal daily fractions over 3 days following conditioning chemotherapy. Six of 11 patients treated in this manner developed lethal pulmonary events. In response to the pulmonary toxicity, partial lung shielding was increased to 60% attenuation. In the next 107 patients receiving this program of total body irradiation there was a reduced incidence of fatal pulmonary events (10 cases of fatal idiopathic interstitial pneumonitis and 12 cases of fatal pulmonary infections) after a median follow-up of 9 months. This was an obvious improvement over the initial group. A significant level of hepato-renal toxicity was also observed with 14 Gy total body irradiation when no liver or kidney blocking was used. Of the first 20 patients treated, three cases of fatal veno-occlusive disease resulted. Subsequently, a 10% attenuation right sided liver block was added. Five of 98 patients treated with this block have developed fatal hepatic dysfunction, (median follow-up of 7.2 months)

  17. Bone marrow transplantation after the Chernobyl nuclear accident

    International Nuclear Information System (INIS)

    On April 26, 1986, an accident at the Chernobyl nuclear power station in the Soviet Union exposed about 200 people to large doses of total-body radiation. Thirteen persons exposed to estimated total-body doses of 5.6 to 13.4 Gy received bone marrow transplants. Two transplant recipients, who received estimated doses of radiation of 5.6 and 8.7 Gy, are alive more than three years after the accident. The others died of various causes, including burns (the cause of death in five), interstitial pneumonitis (three), graft-versus-host disease (two), and acute renal failure and adult respiratory distress syndrome (one). There was hematopoietic (granulocytic) recovery in nine transplant recipients who could be evaluated, six of whom had transient partial engraftment before the recovery of their own marrow. Graft-versus-host disease was diagnosed clinically in four persons and suspected in two others. Although the recovery of endogenous hematopoiesis may occur after exposure to radiation doses of 5.6 to 13.4 Gy, we do not know whether it is more likely after the transient engraftment of transplanted stem cells. Because large doses of radiation affect multiple systems, bone marrow recovery does not necessarily ensure survival. Furthermore, the risk of graft-versus-host disease must be considered when the benefits of this treatment are being weighed

  18. Organotypic culture of human bone marrow adipose tissue.

    Science.gov (United States)

    Uchihashi, Kazuyoshi; Aoki, Shigehisa; Shigematsu, Masamori; Kamochi, Noriyuki; Sonoda, Emiko; Soejima, Hidenobu; Fukudome, Kenji; Sugihara, Hajime; Hotokebuchi, Takao; Toda, Shuji

    2010-04-01

    The precise role of bone marrow adipose tissue (BMAT) in the marrow remains unknown. The purpose of the present study was therefore to describe a novel method for studying BMAT using 3-D collagen gel culture of BMAT fragments, immunohistochemistry, ELISA and real-time reverse transcription-polymerase chain reaction. Mature adipocytes and CD45+ leukocytes were retained for >3 weeks. Bone marrow stromal cells (BMSC) including a small number of lipid-laden preadipocytes and CD44+/CD105+ mesenchymal stem cell (MSC)-like cells, developed from BMAT. Dexamethasone (10 micromol/L), but not insulin (20 mU/mL), significantly increased the number of preadipocytes. Dexamethasone and insulin also promoted leptin production and gene expression in BMAT. Adiponectin production by BMAT was BMAT, in which adiponectin protein secretion is normally very low, and that BMAT may exhibit a different phenotype from that of the visceral and subcutaneous adipose tissues. BMAT-osteoblast interactions were also examined, and it was found that osteoblasts inhibited the development of BMSC and reduced leptin production, while BMAT inhibited the growth and differentiation of osteoblasts. The present novel method proved to be useful for the study of BMAT biology.

  19. Bilateral Maxillary, Sphenoid Sinuses and Lumbosacral Spinal Cord Extramedullary Relapse of CML Following Allogeneic Stem Cell Transplant.

    Science.gov (United States)

    Hosseini, Soudabeh; Ansari, Shahla; Vosough, Parvaneh; Bahoush, Gholamreza; Hamidieh, Amir Ali; Chahardouli, Bahram; Shamsizadeh, Morteza; Mehrazma, Mitra; Dorgalaleh, Akbar

    2016-04-01

    Isolated extramedullary relapse of chronic myelogenous leukemia (CML) after allogeneic stem cell transplant is rare. There is a case report of a child who developed a granulocytic sarcoma of the maxillary and sphenoid sinuses and lumbosacral spinal cord mass 18 months after allogeneic bone marrow transplant for CML. He was presented with per orbital edema and neurological deficit of lower extremities and a mass lesion was found on spinal cord imaging. No evidence of hematologic relapse was identified at that time by bone marrow histology or cytogenetic. The patient died 1 month later with a picture of pneumonia, left ventricular dysfunction and a cardiopulmonary arrest on a presumed underlying sepsis with infectious etiology. Granulocytic sarcoma should be considered in the differential diagnosis of mass lesions presenting after allogeneic bone marrow transplantation for CML, even if there is no evidence of bone marrow involvement. PMID:27252811

  20. Spine Fusion Using Cell Matrix Composites Enriched in Bone Marrow-Derived Cells

    OpenAIRE

    Muschler, George F.; Nitto, Hironori; Matsukura, Yoichi; Boehm, Cynthia; Valdevit, Antonio; Kambic, Helen; Davros, William; Powell, Kimerly; Easley, Kirk

    2003-01-01

    Bone marrow-derived cells including osteoblastic progenitors can be concentrated rapidly from bone marrow aspirates using the surface of selected implantable matrices for selective cell attachment. Concentration of cells in this way to produce an enriched cellular composite graft improves graft efficacy. The current study was designed to test the hypothesis that the biologic milieu of a bone marrow clot will significantly improve the efficacy of such a graft. An established posterior spinal f...

  1. Remyelination of the Spinal Cord Following Intravenous Delivery of Bone Marrow Cells

    OpenAIRE

    Akiyama, Yukinori; Radtke, Christine; HONMOU, OSAMU; Kocsis, Jeffery D.

    2002-01-01

    Bone marrow contains a population of pluripotent cells that can differentiate into a variety of cell lineages, including neural cells. When injected directly into the demyelinated spinal cord they can elicit remyelination. Recent work has shown that following systemic delivery of bone marrow cells functional improvement occurs in contusive spinal cord injury and stroke models in rat. We report here that secondary to intravenous introduction of an acutely isolated bone marrow cell fraction (mo...

  2. The Role of Bone Marrow Cells in the Phenotypic Changes Associated with Diabetic Nephropathy

    OpenAIRE

    Guang Yang; Qingli Cheng; Sheng Liu; Jiahui Zhao

    2015-01-01

    The aim of our study was to investigate the role of bone marrow cells in the phenotypic changes that occur in diabetic nephropathy. Bone marrow cells were obtained from either streptozotocin-induced diabetic or untreated control C3H/He mice and transplanted into control C3H/He mice. Eight weeks after bone marrow cell transplantation, renal morphologic changes and clinical parameters of diabetic nephropathy, including the urine albumin/creatinine ratio and glucose tolerance, were measured in v...

  3. Intensive care outcomes in bone marrow transplant recipients: a population-based cohort analysis

    OpenAIRE

    Scales, Damon C.; Thiruchelvam, Deva; Kiss, Alexander; Sibbald, William J; Donald A Redelmeier

    2008-01-01

    Introduction Intensive care unit (ICU) admission for bone marrow transplant recipients immediately following transplantation is an ominous event, yet the survival of these patients with subsequent ICU admissions is unknown. Our objective was to determine the long-term outcome of bone marrow transplant recipients admitted to an ICU during subsequent hospitalizations. Methods We conducted a population-based cohort analysis of all adult bone marrow transplant recipients who received subsequent I...

  4. An Association between BK Virus Replication in Bone Marrow and Cytopenia in Kidney-Transplant Recipients

    OpenAIRE

    Emilie Pambrun; Catherine Mengelle; Geneviève Fillola; Patrick Laharrague; Laure Esposito; Isabelle Cardeau-Desangles; Arnaud Del Bello; Jacques Izopet; Lionel Rostaing; Nassim Kamar

    2014-01-01

    The human polyomavirus BK (BKV) is associated with severe complications, such as ureteric stenosis and polyomavirus-associated nephropathy (PVAN), which often occur in kidney-transplant patients. However, it is unknown if BKV can replicate within bone marrow. The aim of this study was to search for BKV replication within the bone marrow of kidney-transplant patients presenting with a hematological disorder. Seventy-two kidney-transplant patients underwent bone-marrow aspiration for cytopenia....

  5. Absorbed dose to active red bone marrow from diagnostic and therapeutic uses of radiation

    International Nuclear Information System (INIS)

    The bone-marrow dose arising from radiological procedures as carried out in Australia have been determined as part of a survey of population doses. This paper describes the method of calculation of the radiation doses to the active bone marrow from diagnostic radiography, fluoroscopy and radiotherapy. The results of the calculations are compared with the results of other models of bone-marrow dose for a number of diagnostic X-ray procedures

  6. Chitosan-collagen porous scaffold and bone marrow mesenchymal stem cell transplantation for ischemic stroke

    OpenAIRE

    Feng Yan; Wei Yue; Yue-lin Zhang; Guo-chao Mao; Ke Gao; Zhen-xing Zuo; Ya-jing Zhang; Hui Lu

    2015-01-01

    In this study, we successfully constructed a composite of bone marrow mesenchymal stem cells and a chitosan-collagen scaffold in vitro, transplanted either the composite or bone marrow mesenchymal stem cells alone into the ischemic area in animal models, and compared their effects. At 14 days after co-transplantation of bone marrow mesenchymal stem cells and the hitosan-collagen scaffold, neurological function recovered noticeably. Vascular endothelial growth factor expression and nestin-labe...

  7. Adult Bone Marrow: Which Stem Cells for Cellular Therapy Protocols in Neurodegenerative Disorders?

    OpenAIRE

    Sabine Wislet-Gendebien; Emerence Laudet; Virginie Neirinckx; Bernard Rogister

    2012-01-01

    The generation of neuronal cells from stem cells obtained from adult bone marrow is of significant clinical interest in order to design new cell therapy protocols for several neurological disorders. The recent identification in adult bone marrow of stem cells derived from the neural crests (NCSCs) might explain the neuronal phenotypic plasticity shown by bone marrow cells. However, little information is available about the nature of these cells compared to mesenchymal stem cells (MSCs). In th...

  8. Onset of apoprotein E secretion during differentiation of mouse bone marrow-derived mononuclear phagocytes

    OpenAIRE

    1983-01-01

    A number of macrophage functions were sequentially expressed when the bone marrow precursors of mononuclear phagocytes differentiated in culture in the presence of a specific growth factor, colony-stimulating factor-1. We have defined the expression of apoprotein E (ApoE), a major secreted protein of resident peritoneal macrophages, during maturation of adherent bone marrow-derived mononuclear phagocytes into macrophages. By 5 d the bone marrow macrophages were active secretory cells, but few...

  9. Different expression of chemokines in rheumatoid arthritis and osteoarthritis bone marrow

    Science.gov (United States)

    Kurowska, Weronika J.; Radzikowska, Anna; Massalska, Magdalena A.; Burakowski, Tomasz; Kontny, Ewa; Słowińska, Iwona; Gasik, Robert; Maśliński, Włodzimierz

    2016-01-01

    Objectives Rheumatoid arthritis (RA) is a chronic inflammatory disease leading to joint destruction. In addition to involvement of the joints, there is growing evidence that inflammatory/autoimmune processes take place in bone marrow, beginning the disease onset. Activated T and B cells accumulate in bone marrow, where also effective antigen presentation takes place. An increased number of activated T cells was observed in RA in comparison to osteoarthritis (OA) bone marrow. In the present study we analyzed the levels of chemokines that may be responsible for accumulation/retention of T-cells in the bone marrow of RA and OA patients. Material and methods Bone marrow samples were obtained from RA and OA patients during total hip replacement surgery, and bone marrow plasma was obtained by gradient centrifugation. Levels of the chemokines CX3CL1, CCL5, CCL2, CXCL12 and CXCL1 were measured in bone marrow plasma by specific ELISAs. Comparison between the groups of patients and statistical significance were analyzed by the two-tailed Mann-Whitney U test. Results Increased levels of CX3CL1 (818 ±431 pg/ml vs. 502 ±131 pg/ml, p < 0.0007) and CCL5 (5967 ±1680 pg/ml vs. 4878 ±2360 pg/ml, p < 0.05) respectively in bone marrow plasma from RA in comparison with OA patients were observed. In contrast, similar levels of CCL2, CXCL12 and CXCL1 in RA and OA bone marrow suggest that these cytokines do not play a significant role in the observed T cell accumulation in RA bone marrow. Conclusions CX3CL1 and CCL5 overproduced in RA bone marrow may contribute to the accumulation of T cells observed in RA bone marrow. PMID:27407279

  10. Detection of micrometastatic prostate cancer cells in the bone marrow of patients with prostate cancer.

    OpenAIRE

    Deguchi, T; Yang, M..; Ehara, H.; Ito, S.; Nishino, Y; Takahashi, Y.; Ito, Y.; Shimokawa, K; Tanaka, T.; Imaeda, T.; Doi, T.; Kawada, Y

    1997-01-01

    Thirty-five patients with prostate cancer were examined for micrometastases to the bone marrow using reverse transcription-polymerase chain reaction (RT-PCR) with primers specific for the prostate-specific antigen (PSA) gene. Of nine patients with bone metastases detectable by bone scan imaging, five patients had PSA mRNA expression in the bone marrow detectable by RT-PCR. Of 26 patients with negative bone scan findings, seven patients had PSA mRNA expression detectable in the bone marrow. RT...

  11. Bone marrow-derived mesenchymal stromal cells inhibit Th2-mediated allergic airways inflammation in mice.

    Science.gov (United States)

    Goodwin, Meagan; Sueblinvong, Viranuj; Eisenhauer, Philip; Ziats, Nicholas P; LeClair, Laurie; Poynter, Matthew E; Steele, Chad; Rincon, Mercedes; Weiss, Daniel J

    2011-07-01

    Bone marrow-derived mesenchymal stromal cells (BMSCs) mitigate inflammation in mouse models of acute lung injury. However, specific mechanisms of BMSC actions on CD4 T lymphocyte-mediated inflammation in vivo remain poorly understood. Limited data suggests promotion of Th2 phenotype in models of Th1-mediated diseases. However, whether this might alleviate or worsen Th2-mediated diseases such as allergic asthma is unknown. To ascertain the effects of systemic administration of BMSCs in a mouse model of Th2-mediated allergic airways inflammation, ovalbumin (OVA)-induced allergic airways inflammation was induced in wild-type C57BL/6 and BALB/c mice as well as in interferon-γ (IFNγ) receptor null mice. Effects of systemic administration during antigen sensitization of either syngeneic or allogeneic BMSC on airways hyperreactivity, lung inflammation, antigen-specific CD4 T lymphocytes, and serum immunoglobulins were assessed. Both syngeneic and allogeneic BMSCs inhibited airways hyperreactivity and lung inflammation through a mechanism partly dependent on IFNγ. However, contrary to existing data, BMSCs did not affect antigen-specific CD4 T lymphocyte proliferation but rather promoted Th1 phenotype in vivo as assessed by both OVA-specific CD4 T lymphocyte cytokine production and OVA-specific circulating immunoglobulins. BMSCs treated to prevent release of soluble mediators and a control cell population of primary dermal skin fibroblasts only partly mimicked the BMSC effects and in some cases worsened inflammation. In conclusion, BMSCs inhibit Th2-mediated allergic airways inflammation by influencing antigen-specific CD4 T lymphocyte differentiation. Promotion of a Th1 phenotype in antigen-specific CD4 T lymphocytes by BMSCs is sufficient to inhibit Th2-mediated allergic airways inflammation through an IFNγ-dependent process. PMID:21544902

  12. Factors that influence Greeks' decision to register as potential bone marrow donors.

    Science.gov (United States)

    Galanis, P A; Sparos, L D; Katostaras, T; Velonakis, E; Kalokerinou, A

    2008-06-01

    Hemopoietic stem cells can be used from bone marrow or blood or umbilical cord blood of matched siblings or appropriately matched unrelated volunteers. Today, large bone marrow registries have been established to help identify volunteer unrelated bone marrow donors for patients lacking a family donor. Despite there being almost 10 million registered potential bone marrow donors (PBMD) worldwide, only 50% of white patients have a suitable bone marrow match. Growth in the number of PBMD increases the likelihood of finding a compatible donor for a patient. The attitudes and knowledge of 250 registered PBMD and 315 not registered PBMD toward bone marrow donation, tissues and organs donation, and blood donation were surveyed, using a questionnaire with 27 items. Multivariate logistic regression identified gender (females more often than males), regular blood donation, having a relative or a friend who has already been registered as PBMD, having a relative or a friend who needs bone marrow transplantation, family discussion about tissue and organ donation, knowledge about bone marrow transplantation, information about bone marrow transplantation, and trust in health professionals were independent predictive factors influencing people's decision to register as PBMD. Knowledge of these factors is important to target recruitment efforts.

  13. Effect of nephrotoxic drugs on the development of radiation nephropathy after bone marrow transplantation

    International Nuclear Information System (INIS)

    Chronic renal failure is a significant cause of late morbidity in bone marrow transplant patients whose conditioning regimen includes total body irradiation (TBI). Radiation is a major cause of this syndrome (bone marrow transplant nephropathy), but it may not be the only cause. These studies use a rat syngeneic bone marrow transplant model to determine whether nephrotoxic agents used in conjunction with bone marrow transplantation (BMT) could be enhancing or accelerating the development of radiation nephropathy. Rats received 11-17 Gy TBI in six fractions over 3 days followed by syngeneic bone marrow transplant. In conjunction with the bone marrow transplants, animals received either no drugs, cyclosporine, amphotericin, gentamicin, or busulfan. Drugs were given in schedules analogous to their use in clinical bone marrow transplantation. Drug doses were chosen so that the drug regimen alone caused detectable acute nephrotoxicity. Animals were followed for 6 months with periodic renal function tests. Gentamicin had no apparent interactions with TBI. Amphotericin increased the incidence of engraftment failure, but did not enhance radiation nephropathy. Cyclosporin with TBI caused late morbidity that appeared to be due to neurological problems, but did not enhance radiation nephropathy. Busulfan resulted in a significant enhancement of radiation nephropathy. Of the nephrotoxins used in conjunction with bone marrow transplantation only radiation and busulfan were found to be risk factors for bone marrow transplant nephropathy. 34 refs., 4 figs., 2 tabs

  14. Bone marrow mesenchymal stem cell therapy in ischemic stroke: mechanisms of action and treatment optimization strategies

    Directory of Open Access Journals (Sweden)

    Guihong Li

    2016-01-01

    Full Text Available Animal and clinical studies have confirmed the therapeutic effect of bone marrow mesenchymal stem cells on cerebral ischemia, but their mechanisms of action remain poorly understood. Here, we summarize the transplantation approaches, directional migration, differentiation, replacement, neural circuit reconstruction, angiogenesis, neurotrophic factor secretion, apoptosis, immunomodulation, multiple mechanisms of action, and optimization strategies for bone marrow mesenchymal stem cells in the treatment of ischemic stroke. We also explore the safety of bone marrow mesenchymal stem cell transplantation and conclude that bone marrow mesenchymal stem cell transplantation is an important direction for future treatment of cerebral ischemia. Determining the optimal timing and dose for the transplantation are important directions for future research.

  15. Bone marrow mesenchymal stem cell therapy in ischemic stroke: mechanisms of action and treatment optimization strategies

    Science.gov (United States)

    Li, Guihong; Yu, Fengbo; Lei, Ting; Gao, Haijun; Li, Peiwen; Sun, Yuxue; Huang, Haiyan; Mu, Qingchun

    2016-01-01

    Animal and clinical studies have confirmed the therapeutic effect of bone marrow mesenchymal stem cells on cerebral ischemia, but their mechanisms of action remain poorly understood. Here, we summarize the transplantation approaches, directional migration, differentiation, replacement, neural circuit reconstruction, angiogenesis, neurotrophic factor secretion, apoptosis, immunomodulation, multiple mechanisms of action, and optimization strategies for bone marrow mesenchymal stem cells in the treatment of ischemic stroke. We also explore the safety of bone marrow mesenchymal stem cell transplantation and conclude that bone marrow mesenchymal stem cell transplantation is an important direction for future treatment of cerebral ischemia. Determining the optimal timing and dose for the transplantation are important directions for future research.

  16. Argyrophilic nucleolar organiser region (AgNOR) staining in normal bone marrow cells.

    OpenAIRE

    Nikicicz, E P; Norback, D. H.

    1990-01-01

    Fifteen normal bone marrow aspirates were stained with the agyrophilic nucleolar organiser region (AgNOR) method. The results of the specific staining AgNORs as well as nuclear and cytoplasmic staining were analysed. A system was devised to characterise precisely the AgNORs present in the nuclei of bone marrow cells. Particular types of bone marrow cells had a characteristic AgNOR and non-AgNOR staining pattern. The bone marrow cells were identified easily and reliably with AgNOR staining and...

  17. Male genital lichen sclerosus in recipients of bone marrow transplants.

    Science.gov (United States)

    Thomas, L J; Shim, T N; Borysiewicz, C; Dinneen, M; Fawcett, H; Roy, A; Francis, N; Bunker, C B

    2016-07-01

    We describe two patients who received haematopoietic stem cell marrow transplantation, and developed male genital lichen sclerosus (MGLSc), one of whom also had squamous carcinoma in situ (Bowen disease). MGLSc has previously been associated with graft-versus-host disease. Various aetiological factors for LSc have been proposed, including a role for chronic occluded epithelial exposure to urine. A number of factors imply that the risk of malignant transformation in this bone marrow transplant group is likely to be higher than the overall figure of 2-9% cited for MGLSc. It is vital, therefore, that clinicians involved in the care of those with haematological malignancies are adequately prepared to examine the genitals of their patients, and to recognize and refer any suspect penile lesions. PMID:26936088

  18. Combination chemotherapy with cyclophosphamide, epirubicin and 5-fluorouracil causes trabecular bone loss, bone marrow cell depletion and marrow adiposity in female rats.

    Science.gov (United States)

    Fan, Chiaming; Georgiou, Kristen R; McKinnon, Ross A; Keefe, Dorothy M K; Howe, Peter R C; Xian, Cory J

    2016-05-01

    The introduction of anthracyclines to adjuvant chemotherapy has increased survival rates among breast cancer patients. Cyclophosphamide, epirubicin and 5-fluorouracil (CEF) combination therapy is now one of the preferred regimens for treating node-positive breast cancer due to better survival with less toxicity involved. Despite the increasing use of CEF, its potential in causing adverse skeletal effects remains unclear. Using a mature female rat model mimicking the clinical setting, this study examined the effects of CEF treatment on bone and bone marrow in long bones. Following six cycles of CEF treatment (weekly intravenous injections of cyclophosphamide at 10 mg/kg, epirubicin at 2.5 mg/kg and 5-flurouracil at 10 mg/kg), a significant reduction in trabecular bone volume was observed at the metaphysis, which was associated with a reduced serum level of bone formation marker alkaline phosphatase (ALP), increased trends of osteoclast density and osteoclast area at the metaphysis, as well as an increased size of osteoclasts being formed from the bone marrow cells ex vivo. Moreover, a severe reduction of bone marrow cellularity was observed following CEF treatment, which was accompanied by an increase in marrow adipose tissue volume. This increase in marrow adiposity was associated with an expansion in adipocyte size but not in marrow adipocyte density. Overall, this study indicates that six cycles of CEF chemotherapy may induce some bone loss and severe bone marrow damage. Mechanisms for CEF-induced bone/bone marrow pathologies and potential preventive strategies warrant further investigation. PMID:26056019

  19. Comparisons of Mouse Mesenchymal Stem Cells in Primary Adherent Culture of Compact Bone Fragments and Whole Bone Marrow

    OpenAIRE

    Yiting Cai; Tianshu Liu; Fang Fang; Chengliang Xiong; Shiliang Shen

    2015-01-01

    The purification of mouse bone marrow mesenchymal stem cells (BMSCs) by using the standard method of whole bone marrow adherence to plastic still remains ineffective. An increasing number of studies have indicated compact bone as an alternative source of BMSCs. We isolated BMSCs from cultured compact bone fragments and investigated the proliferative capacity, surface immunophenotypes, and osteogenic and adipogenic differentiations of the cells after the first trypsinization. The fragment cult...

  20. Impact of cytomegalovirus and grafts versus host disease on the dynamics of CD57+CD28-CD8+ T cells after bone marrow transplant

    Directory of Open Access Journals (Sweden)

    Ana Verena Almeida Mendes

    2008-01-01

    Full Text Available OBJECTIVES: The present study aimed to evaluate the dynamics of CD28 and CD57 expression in CD8+ T lymphocytes during cytomegalovirus viremia in bone marrow transplant recipients. METHODS: In a prospective study, blood samples were obtained once weekly once from 33 healthy volunteers and weekly from 33 patients. To evaluate the expression of CD57 and CD28 on CD8+ T lymphocytes, flow cytometry analysis was performed on blood samples for four months after bone marrow transplant, together with cytomegalovirus antigenemia assays. RESULTS: Compared to cytomegalovirus-seronegative healthy subjects, seropositive healthy subjects demonstrated a higher percentage of CD57+ and a lower percentage of CD28+ cells (p<0.05. A linear regression model demonstrated a continuous decrease in CD28+ expression and a continuous increase in CD57+ expression after bone marrow transplant. The occurrence of cytomegalovirus antigenemia was associated with a steep drop in the percentage of CD28+ cells (5.94%, p<0.01 and an increase in CD57+ lymphocytes (5.60%, p<0.01. This cytomegalovirus-dependent effect was for the most part concentrated in the allogeneic bone marrow transplant patients. The development of acute graft versus host disease, which occurred at an earlier time than antigenemia (day 26 vs. day 56 post- bone marrow transplant, also had an impact on the CD57+ subset, triggering an increase of 4.9% in CD57+ lymphocytes (p<0.05. CONCLUSION: We found continuous relative changes in the CD28+ and CD57+ subsets during the first 120 days post- bone marrow transplant, as part of immune system reconstitution and maturation. A clear correlation was observed between the expansion of the CD57+CD28-CD8+ T lymphocyte subpopulation and the occurrence of graft versus host disease and cytomegalovirus viremia.