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International Journal of Hematology

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https://www.readbyqxmd.com/read/28097534/successful-treatment-with-low-dose-nivolumab-in-refractory-hodgkin-lymphoma-after-allogeneic-stem-cell-transplantation
#1
Makoto Onizuka, Minoru Kojima, Keiko Matsui, Shinichiro Machida, Masako Toyosaki, Yasuyuki Aoyama, Hidetsugu Kawai, Jun Amaki, Ryujiro Hara, Akifumi Ichiki, Yoshiaki Ogawa, Hiroshi Kawada, Naoya Nakamura, Kiyoshi Ando
Previous studies have reported that an antibody that blocks programmed cell death 1 (PD-1) has therapeutic activity in patients with refractory/relapsed Hodgkin lymphoma (HL). However, the safety and efficacy of these agents in the post-allogeneic stem cell transplantation (allo-SCT) setting are not well known. Here, we describe a patient who was diagnosed as classical HL and treated with five regimens of chemotherapies with autologous SCT. Complete remission (CR) was not achieved following this initial treatment, so we performed allo-SCT from an HLA-matched sibling donor...
January 17, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28078653/meta-analysis-of-treatment-with-rabbit-and-horse-antithymocyte-globulin-for-aplastic-anemia
#2
Jin Hayakawa, Junya Kanda, Yu Akahoshi, Naonori Harada, Kazuaki Kameda, Tomotaka Ugai, Hidenori Wada, Yuko Ishihara, Koji Kawamura, Kana Sakamoto, Masahiro Ashizawa, Miki Sato, Kiriko Terasako-Saito, Shun-Ichi Kimura, Misato Kikuchi, Rie Yamazaki, Shinichi Kako, Yoshinobu Kanda
Aplastic anemia patients who received rabbit antithymocyte globulin exhibited response and survival rates inferior to those who received horse antithymocyte globulin in several studies. Therefore, we conducted a meta-analysis to compare rabbit and horse antithymocyte globulin as immunosuppressive therapy for aplastic anemia. We searched online databases for studies that compared antithymocyte globulin regimens as first-line treatment for aplastic anemia, including both randomized and non-randomized controlled trials...
January 11, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28054244/hemophagocytic-lymphohistiocytosis-following-influenza-vaccination-in-a-patient-with-aplastic-anemia-undergoing-allogeneic-bone-marrow-stem-cell-transplantation
#3
LETTER
Taichi Ikebe, Hiroyuki Takata, Hitohiro Sasaki, Yasuhiko Miyazaki, Eiichi Ohtsuka, Yoshio Saburi, Masao Ogata, Kuniaki Shirao
No abstract text is available yet for this article.
January 4, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28044259/bortezomib-interferes-with-adhesion-of-b-cell-precursor-acute-lymphoblastic-leukemia-cells-through-sparc-up-regulation-in-human-bone-marrow-mesenchymal-stromal-stem-cells
#4
Masaki Iwasa, Yasuo Miura, Aya Fujishiro, Sumie Fujii, Noriko Sugino, Satoshi Yoshioka, Asumi Yokota, Terutoshi Hishita, Hideyo Hirai, Akira Andoh, Tatsuo Ichinohe, Taira Maekawa
The poor prognosis of adults with B cell precursor acute lymphoblastic leukemia (BCP-ALL) is attributed to leukemia cells that are protected by the bone marrow (BM) microenvironment. In the present study, we explored the pharmacological targeting of mesenchymal stromal/stem cells in BM (BM-MSCs) to eliminate chemoresistant BCP-ALL cells. Human BCP-ALL cells (NALM-6 cells) that adhered to human BM-MSCs (NALM-6/Ad) were highly resistant to multiple anti-cancer drugs, and exhibited pro-survival characteristics, such as an enhanced Akt/Bcl-2 pathway and increased populations in the G0 and G2/S/M cell cycle stages...
January 2, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28044258/tumor-vascular-infarction-prospects-and-challenges
#5
REVIEW
Rana Jahanban-Esfahlan, Khaled Seidi, Nosratollah Zarghami
Induction of thrombosis in tumor vasculature represents an appealing strategy for combating cancer. Formation of fibrin clots may be sufficient to occlude the blood vessels that feed tumor cells, contributing to massive ischemia, vascular infarction, and the subsequent necrosis and apoptosis of neoplastic cells. This approach called as tumor vascular infarction was pioneered by Huang et al. (Science 275:547-550, 1997). Since then, different vascular targeting moieties were linked to a truncated form of human tissue factor (tTF), to generate coaguligands with selective thrombotic activities on tumor neovasculature...
January 2, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28032275/cd109-a-negative-regulator-of-tgf-%C3%AE-signaling-is-a-putative-risk-marker-in-diffuse-large-b-cell-lymphoma
#6
Maki Yokoyama, Masaaki Ichinoe, Sosei Okina, Yasutaka Sakurai, Norihiro Nakada, Nobuyuki Yanagisawa, Shi-Xu Jiang, Yoshiko Numata, Atsuko Umezawa, Koji Miyazaki, Masaaki Higashihara, Yoshiki Murakumo
CD109 is a glycosylphosphatidylinositol-anchored glycoprotein that negatively regulates TGF-β signaling. CD109 was originally identified in hematopoietic tumors; however, the significance of CD109 in hematopoietic malignancies remains unclear. Here, we study the association of CD109 with diffuse large B-cell lymphoma (DLBCL) prognosis. Eighty-four DLBCL specimens were immunohistochemically analyzed for CD109 expression, and 31 and 53 cases were classified into low- and high-CD109 expression groups, respectively...
December 28, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28028749/oral-cyclophosphamide-was-effective-for-coombs-negative-autoimmune-hemolytic-anemia-in-cd16-cd56-chronic-lymphoproliferative-disorder-of-nk-cells
#7
Nodoka Sekiguchi, Sayaka Nishina, Toru Kawakami, Hitoshi Sakai, Noriko Senoo, Yasushi Senoo, Toshiro Ito, Hiroshi Saito, Hideyuki Nakazawa, Tomonobu Koizumi, Fumihiro Ishida
An 84-year-old woman was referred to our hospital presenting anemia. Her hemoglobin level was 5.8 g/dL, and white blood cell count was 9400/μL, consisting of 82% lymphocytes. Given the lymphocyte phenotype (CD2+, CD3-, CD16+, and CD56-) and negative whole blood EBV viral load, we made a diagnosis of chronic lymphoproliferative disorder of NK cells (CLPD-NK). We suspected hemolytic anemia because of the high levels of reticulocytes in the peripheral blood and the low haptoglobin value. Although the direct Coombs test was negative and there was no cold agglutination, we examined her red-blood-cell-bound IgG (RBC-IgG), which was elevated...
December 27, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28028748/mouse-immune-thrombocytopenia-is-associated-with-th1-bias-and-expression-of-activating-fc%C3%AE-receptors
#8
Tetsuya Nishimoto, Yuka Okazaki, Miku Numajiri, Masataka Kuwana
Immune thrombocytopenia (ITP) is an autoimmune disease mediated by anti-platelet autoantibodies. We recently established a mouse ITP model exhibiting regulatory T-cell (Treg) deficiency, although only one-third of the Treg-deficient mice developed ITP. To clarify mechanisms involved in the emergence of platelet-specific autoimmunity in this model, we examined the T helper (Th)-cell balance and macrophage Fcγ receptor (FcγR) expression profiles in Treg-deficient mice with and without ITP. Splenocytes from both populations of Treg-deficient mice and control BALB/c mice were subjected to flow cytometry-based analyses to evaluate Th cell subset proportions and the expression of activating and inhibitory FcγRs on macrophages...
December 27, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28013483/spousal-hematopoietic-stem-cell-transplantation
#9
Kazuhiro Ikegame, Katsuji Kaida, Satoshi Yoshihara, Kyoko Yoshihara, Shinichi Ishii, Takayuki Inoue, Masaya Okada, Hiroya Tamaki, Toshihiro Soma, Yasushi Kusunoki, Hiroto Kojima, Hiroh Saji, Hiroyasu Ogawa
We report a pilot series of five patients who received stem cell transplantation (SCT) from a spouse for post-transplant relapse or rejection. The inclusion criterion regarding HLA disparities was three or fewer antigen mismatches in the graft-versus-host direction at the HLA-A, B, and DR loci. Four patients received spousal SCT as a third transplant attempt after post-transplant relapse and one as rescue for graft rejection. The reduced intensity conditioning (RIC) regimen consisted of fludarabine, melphalan, and anti-thymocyte globulin (ATG) with 3 Gy of total body irradiation (TBI) for relapse cases and ATG plus 4 Gy of TBI for the rejection case...
December 24, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28013482/factors-that-influence-a-mobilized-hsc-product
#10
EDITORIAL
Susan K Nilsson
No abstract text is available yet for this article.
December 24, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28000100/marked-response-to-imatinib-mesylate-in-a-patient-with-platelet-derived-growth-factor-receptor-beta-associated-acute-myeloid-leukemia
#11
Yoshimitsu Shimomura, Hayato Maruoka, Takayuki Ishikawa
Abnormal platelet-derived growth factor receptor (PDGFR)-mediated signaling may cause hematologic neoplasm. The PDGFR beta (PDGFRB) gene, located at chromosome band 5q31-33, forms a fusion gene as a result of chromosome translocation. Although patients with PDGFRB rearrangement mostly present with myeloproliferative neoplasm and eosinophilia, acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) have also been reported in this population. Treatment with imatinib mesylate alone has been shown to have excellent long-term efficacy against myeloproliferative neoplasms; however, its long-term effects on ALL and AML have not been elucidated...
December 20, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/28000099/phase-1-study-of-ixazomib-alone-or-combined-with-lenalidomide-dexamethasone-in-japanese-patients-with-relapsed-refractory-multiple-myeloma
#12
Kenshi Suzuki, Hiroshi Handa, Takaaki Chou, Kenichi Ishizawa, Takatoshi Takubo, Yoichi Kase
We report the first clinical investigation conducted in Japan to confirm the safety, tolerability, and pharmacokinetics of ixazomib alone and combined with lenalidomide-dexamethasone (Rd) in Japanese patients with relapsed/refractory multiple myeloma. Adult patients with measurable disease and ≥2 prior lines of therapy received oral ixazomib 4.0 mg on days 1, 8, 15 alone or combined with lenalidomide 25 mg on days 1-21 and dexamethasone 40 mg on days 1, 8, 15, 22 in 28-day cycles. Fourteen patients who had received a median of seven prior therapies were enrolled (seven per cohort)...
December 20, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27995457/detection-of-chromosomal-abnormalities-by-g-banding-and-prognostic-impact-in-follicular-lymphoma-in-the-rituximab-era
#13
Taku Tsukamoto, Miki Kiyota, Eri Kawata, Nobuhiko Uoshima, Shotaro Tatekawa, Yoshiaki Chinen, Hisao Nagoshi, Shinsuke Mizutani, Yuji Shimura, Mio Yamamoto-Sugitani, Tsutomu Kobayashi, Shigeo Horiike, Satoru Yasukawa, Akio Yanagisawa, Masafumi Taniwaki, Junya Kuroda
Disease-specific cytogenetic abnormalities involving BCL2 gene rearrangement frequently co-exist with other cytogenetic abnormalities, contributing to disease progression in follicular lymphoma (FL). In the present study, we retrospectively investigated the prognostic impact of BCL2-unrelated cytogenetic abnormalities in FL. Of 139 consecutively diagnosed patients with FL at two independent institutes, metaphase spreads of tumor cells were obtained for use in G-banding analysis in 77 patients. The recurrent additional cytogenetic abnormalities included chromosome gains +5 (n = 8), +7 (n = 16), +12 (n = 10), and +X (n = 12), and losses -8 (n = 7), -13 (n = 12) -15 (n = 7), and 6q- (n = 7)...
December 19, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27995456/current-treatment-strategies-in-relapsed-refractory-mantle-cell-lymphoma-where-are-we-now
#14
REVIEW
Erden Atilla, Pinar Ataca Atilla, Taner Demirer
The management of relapsed/refractory mantle cell lymphoma remains challenging. Patients with relapsed mantle cell lymphoma have been treated with multi-agent salvage chemotherapies; however, outcomes are poor. Although there have been studies in the relapse/refractory setting, current data indicate that autologous hematopoietic stem cell transplantation may be an especially useful approach in the front line setting in patients in first complete or partial remission following induction chemotherapy. Allogeneic hematopoietic stem cell transplantation is the only curative option, although reduced intensity conditioning in chemo-sensitive relapse or refractory mantle cell lymphoma provides better survival rates...
December 19, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27943117/serum-igm-levels-independently-predict-immune-response-to-influenza-vaccine-in-long-term-survivors-vaccinated-at-1%C3%A2-year-after-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#15
Yusuke Fukatsu, Yasuyuki Nagata, Miwa Adachi, Tomohiro Yagyu, Takaaki Ono
Influenza virus infection can cause fatal complications (e.g., pneumonia) in immunodeficient long-term survivors of allogeneic hematopoietic stem cell transplantation (allo-HSCT). The immune response to the vaccine improves if it is administered at >1 year after allo-HSCT, although the response may vary according to the patient's immune status. We sought to identify predictors of immune response to trivalent inactivated influenza vaccine (TIV) among patients vaccinated at >1 year after allo-HSCT. We included 27 allo-HSCT recipients, with a median interval of 4...
December 10, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27943116/cellular-players-of-hematopoietic-stem-cell-mobilization-in-the-bone-marrow-niche
#16
REVIEW
Joshua Tay, Jean-Pierre Levesque, Ingrid G Winkler
Hematopoietic stem cells (HSC) reside in perivascular regions of the bone marrow (BM) embedded within a complex regulatory unit called the niche. Cellular components of HSC niches include vascular endothelial cells, mesenchymal stromal progenitor cells and a variety of mature hematopoietic cells such as macrophages, neutrophils, and megakaryocytes-further regulated by sympathetic nerves and complement components as described in this review. Three decades ago the discovery that cytokines induce a large number of HSC to mobilize from the BM into the blood where they are easily harvested, revolutionised the field of HSC transplantation-curative for immune-deficiencies and some malignancies...
December 10, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27943115/harnessing-bone-marrow-resident-regulatory-t-cells-to-improve-allogeneic-stem-cell-transplant-outcomes
#17
REVIEW
Laetitia Le Texier, Katie E Lineburg, Kelli P A MacDonald
Regulatory T cells (Treg) are a suppressive T cell population which play a crucial role in the establishment of tolerance after stem cell transplantation (SCT) by controlling the effector T cell responses that drive acute and chronic GVHD. The BM compartment is enriched in a highly suppressive, activated/memory autophagy-dependent Treg population, which contributes to the HSC engraftment and the control of GVHD. G-CSF administration releases Treg from the BM through disruption of the CXCR4/SDF-1 axis and further improves Treg survival following SCT through the induction of autophagy...
December 10, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27943166/use-of-mycophenolate-mofetil-and-a-calcineurin-inhibitor-in-allogeneic-hematopoietic-stem-cell-transplantation-from-hla-matched-siblings-or-unrelated-volunteer-donors-japanese-multicenter-phase-ii-trials
#18
Takahiko Nakane, Hirohisa Nakamae, Takuhiro Yamaguchi, Saiko Kurosawa, Atsuo Okamura, Michihiro Hidaka, Shigeo Fuji, Akio Kohno, Takeshi Saito, Yasutaka Aoyama, Kazuo Hatanaka, Yoshio Katayama, Kimikazu Yakushijin, Toshimitsu Matsui, Motohiro Yamamori, Akiyoshi Takami, Masayuki Hino, Takahiro Fukuda
To test the feasibility of mycophenolate mofetil (MMF) for graft-versus-host disease (GVHD) prophylaxis in Japanese patients, we conducted two multicenter prospective phase II trials of allogeneic hematopoietic stem-cell transplantation (HSCT) from HLA-matched related donors (MRD group) with MMF and cyclosporine or HLA 7-8/8 allele-matched unrelated bone-marrow donors (URD group) with MMF and tacrolimus. The cumulative incidences of grade II-IV acute GVHD on day 100, which was the primary endpoint in these trials, were 45...
December 9, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27933517/a-novel-mutation-in-the-fibrinogen-a%C3%AE-chain-gly13arg-fibrinogen-nanning-causes-congenital-dysfibrinogenemia-associated-with-defective-peptide-a-release
#19
Jie Yan, Meiling Luo, Peng Cheng, Lin Liao, Xuelian Deng, Donghong Deng, Faquan Lin
Dysfibrinogenemia is characterized by blood coagulation dysfunction induced by an abnormal molecular structure of fibrinogen. Here, we describe a new case. A 32-year-old female was suspected of having dysfibrinogenemia during routine laboratory screening, based on her decreased functional fibrinogen level, normal fibrinogen antigen level, and prolonged thrombin time. We extracted DNA and performed polymerase chain reaction and DNA sequencing to identify genetic mutation. Fibrin polymerization, the kinetics of the fibrinopeptide release, scanning electron microscopy, mass spectrometric analysis, fibrin cross-linking, sodium dodecyl sulfate polyacrylamide gel electrophoresis and western blot were conducted...
December 8, 2016: International Journal of Hematology
https://www.readbyqxmd.com/read/27921272/bcl6-locus-is-hypermethylated-in-angioimmunoblastic-t-cell-lymphoma
#20
Shoko Nishizawa, Mamiko Sakata-Yanagimoto, Keiichiro Hattori, Hideharu Muto, Tran Nguyen, Koji Izutsu, Kenichi Yoshida, Seishi Ogawa, Naoya Nakamura, Shigeru Chiba
BCL6, a master transcription factor for differentiation of follicular helper T (TFH) cells, is highly expressed in angioimmunoblastic T-cell lymphoma (AITL) and peripheral T-cell lymphomas (PTCL) containing tumor cells with TFH features. TET2, encoding an epigenetic regulator, is frequently mutated in AITL/PTCL. We previously reported that Tet2 knockdown mice developed T-cell lymphomas with TFH features. Hypermethylation of the Bcl6 locus followed by BCL6 upregulation was thought to be the key event for lymphoma development in mice...
December 5, 2016: International Journal of Hematology
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