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Fan L, Ni R, Wang H, Zhang L, Wang A, Liu B. Dioscin alleviates aplastic anemia through regulatory T cells promotion. Hematology 2024; 29:2326389. [PMID: 38466633 DOI: 10.1080/16078454.2024.2326389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/28/2024] [Indexed: 03/13/2024] Open
Abstract
Objectives: Aplastic anemia (AA) is one of the immune-mediated bone marrow failure disorders caused by multiple factors, including the inability of CD4 + CD25 + regulatory T cells (Tregs) to negatively regulate cytotoxic T lymphocytes (CTLs). Dioscin is a natural steroid saponin that has a similar structure to steroid hormones. The purpose of this study is to look into the effect of Dioscin on the functions of CD4 + CD25+ Tregs in the AA mouse model and explore its underlying mechanism.Methods: To begin with, bone marrow failure was induced through total body irradiation and allogeneic lymphocyte infusion using male Balb/c mice. After 14 consecutive days of Dioscin orally administrated, the AA mouse model was tested for complete blood counts, HE Staining of the femur, Foxp3, IL-10 and TGF-β. Then CD4 + CD25+ Tregs were isolated from splenic lymphocytes of the AA mouse model, Tregs and the biomarkers and cytokines of Tregs were measured after 24 h of Dioscin intervention treatment in vitro.Results: Dioscin promotes the expression of Foxp3, IL-10, IL-35 and TGF-β, indicating its Tregs-promoting properties. Mechanistically, the administration of Dioscin resulted in the alteration of CD152, CD357, Perforin and CD73 on the surface of Tregs, and restored the expression of Foxp3.Conclusion: Dioscin markedly attenuated bone marrow failure, and promoted Tregs differentiation, suggesting the maintenance of theimmune balance effect of Dioscin. Dioscin attenuates pancytopenia and bone marrow failure via its Tregs promotion properties.
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Affiliation(s)
- Liwei Fan
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Runfeng Ni
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
- Department of Hematology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Haijin Wang
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Le Zhang
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Aidi Wang
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
| | - Baoshan Liu
- Department of Traditional Chinese Medicine, General Hospital of Tianjin Medical University, Tianjin, People's Republic of China
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Nasnas P, Ling J, Gerstein Y, Wang SA, Loghavi S, Hammond D, Montalban-Bravo G, Senapati J, Pemmaraju N, Corredor J, Pierce S, Roth M, Ravandi F, Cuglievan B, Kadia T, DiNardo CD. Detection of PNH Clones can Aid in the Distinction of Aplastic Anemia vs Inherited BM Failure Syndromes: A Single Center Experience and Review of the Literature. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2024; 24:732-735. [PMID: 38945779 DOI: 10.1016/j.clml.2024.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/05/2024] [Accepted: 06/06/2024] [Indexed: 07/02/2024]
Affiliation(s)
- Patrice Nasnas
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Jianhua Ling
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Yoheved Gerstein
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Sa A Wang
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Sanam Loghavi
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Danielle Hammond
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | | | - Jayastu Senapati
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Naveen Pemmaraju
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Jessie Corredor
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Sherry Pierce
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Michael Roth
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Farhad Ravandi
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Branko Cuglievan
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Tapan Kadia
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - Courtney D DiNardo
- Department of Leukemia, The University of Texas, MD Anderson Cancer Center, Houston, TX.
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Babushok DV, DeZern AE, de Castro CM, Rogers ZR, Beenhouwer D, Broder MS, Fanning SR, Gibbs SN, Hanna R, Maciejewski JP, Scott BL, Tantravahi SK, Wlodarski MW, Yermilov I, Patel BJ. Modified Delphi panel consensus recommendations for management of severe aplastic anemia. Blood Adv 2024; 8:3946-3960. [PMID: 38669341 PMCID: PMC11331724 DOI: 10.1182/bloodadvances.2023011642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/28/2024] [Accepted: 04/21/2024] [Indexed: 04/28/2024] Open
Abstract
ABSTRACT Severe aplastic anemia (SAA) is a rare hematologic condition for which there is no clear management algorithm. A panel of 11 experts on adult and pediatric aplastic anemia was assembled and, using the RAND/University of California, Los Angeles modified Delphi panel method, evaluated >600 varying patient care scenarios to develop clinical recommendations for the initial and subsequent management of patients of all ages with SAA. Here, we present the panel's recommendations to rule out inherited bone marrow failure syndromes, on supportive care before and during first-line therapy, and on first-line (initial management) and second-line (subsequent management) therapy of acquired SAA, focusing on when transplant vs medical therapy is most appropriate. These recommendations represent the consensus of 11 experts informed by published literature and experience. They are intended only as general guidance for experienced clinicians who treat patients with SAA and are in no way intended to supersede individual physician and patient decision making. Current and future research should validate this consensus using clinical data. Once validated, we hope these expert panel recommendations will improve outcomes for patients with SAA.
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Affiliation(s)
- Daria V. Babushok
- Division of Hematology-Oncology, Department of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Amy E. DeZern
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Carlos M. de Castro
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke Cancer Institute, Durham, NC
| | - Zora R. Rogers
- Division of Pediatric Hematology-Oncology, University of Texas, Southwestern Medical Center, Dallas, TX
| | | | | | - Suzanne R. Fanning
- Prisma Health Cancer Institute, University of South Carolina, Greenville, SC
| | - Sarah N. Gibbs
- Partnership for Health Analytic Research, Beverly Hills, CA
| | - Rabi Hanna
- Department of Pediatric Hematology Oncology and Bone Marrow Transplantation, Cleveland Clinic, Cleveland, OH
| | | | - Bart L. Scott
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | - Srinivas K. Tantravahi
- Division of Hematology and Hematologic Malignancies, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - Marcin W. Wlodarski
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN
| | - Irina Yermilov
- Partnership for Health Analytic Research, Beverly Hills, CA
| | - Bhumika J. Patel
- Prisma Health Cancer Institute, University of South Carolina, Greenville, SC
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4
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Youssef MAM, Ghazaly MH, Abdelfattah MA. Alternative treatment modality for severe aplastic anemia in a resource-limited setting: a single-institution prospective cohort study from Upper Egypt. Ann Hematol 2023; 102:2997-3006. [PMID: 37704874 PMCID: PMC10567959 DOI: 10.1007/s00277-023-05440-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/03/2023] [Indexed: 09/15/2023]
Abstract
This study compared the efficacy and safety of CsA monotherapy with eltrombopag (E-PAG) + CsA combined treatment in children with severe aplastic anemia (SAA). The study including 30 children had SAA. Ten were a retrospective cohort treated with CsA monotherapy. The other 20 were prospective cohort received E-PAG + CsA. All patients were evaluated for partial (PR) and complete (CR) hematological response at 3, 6, and 12 months. overall response (OR), overall survival rates (OS), and treatment safety. OR for the E-PAG patients was 40% after 3 months of therapy. At 6 months, this had increased to 75% with significantly higher CR rate (40%) than in the CsA group (p = 0.0001). After a year of treatment, the CR for the E-PAG + CsA regimen had increased to 50% and the OR to 85%, compared to 20% in the CsA group (p = 0.0001). The OS at 12 months was 100% in the E-PAG+ CsA group compared to 80% in the CsA cohort. At 24 months, the OS in the E-PAG + CsA group was 90%. In conclusion, E-PAG+ CsA was found to be a safe and effective alternative treatment for children with SAA particularly in countries with limited resources.
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Affiliation(s)
- Mervat A M Youssef
- Children Hospital, Hematology Unit, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohammed H Ghazaly
- Children Hospital, Hematology Unit, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mai A Abdelfattah
- Children Hospital, Hematology Unit, Faculty of Medicine, Assiut University, Assiut, Egypt
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Alobaidi A, Albadry A, Murray A. Very Severe Aplastic Anemia in a 26-Year-Old Male: Implications for Prognosis and Treatment Options. Cureus 2023; 15:e45750. [PMID: 37872935 PMCID: PMC10590479 DOI: 10.7759/cureus.45750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2023] [Indexed: 10/25/2023] Open
Abstract
Aplastic anemia (AA) is a hematopoietic stem cell (HSC) disorder characterized by the loss of HSCs, bone marrow failure, and peripheral pancytopenia. AA is classified as very severe (VSAA), severe (SAA), or non-severe (NSAA) based on the severity criteria. This classification system has implications for the prognosis and treatment options offered to patients. The prognosis of AA has improved over the past several decades with the advancements in supportive care, HSC transplant (HCT), and immunosuppressive therapy (IST). In this report, we present the case of a 26-year-old male diagnosed with VSAA after presenting with severe neutropenia and fever. The patient ultimately underwent HSC transplantation.
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Affiliation(s)
| | - Ahmed Albadry
- Faculty of Medicine, Charles University in Prague, Prague, CZE
| | - Anne Murray
- Clinical Research Institute, Methodist Health System, Dallas, USA
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Pengthina W, Saelue P. Efficacy of Oxymetholone in Severe and Nonsevere Acquired Aplastic Anemia: A Propensity Score Matching Analysis. J Blood Med 2022; 13:753-761. [PMID: 36514313 PMCID: PMC9741824 DOI: 10.2147/jbm.s383148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
Background Bone marrow transplantation, antithymocyte globulin/cyclosporine and eltrombopag are recommended as first-line therapy of severe aplastic anemia (SAA). However, androgens could be considered as front-line treatment among any patients ineligible for better methods although unsatisfactory efficacy is presented. Objective This retrospective study aimed to evaluate response and survival rate of practical-based treatment with oxymetholone. Patients and Methods This constituted an analysis of patients receiving a diagnosis of acquired aplastic anemia (AA) at the age of 15 or over and receiving oxymetholone between January 2004 and December 2018. Propensity Score Analysis (PSA) 1:1 matching was performed, according to sex, age and interval from first symptom to treatment. The primary outcome was one-year overall response (OR). Results Seventy-four patients were successfully matched by PSA. The 1-year OR of oxymetholone in the nonsevere AA (nSAA) and SAA/very severe AA (vSAA) groups was 54.1 and 13.5%, respectively (P <0.001). With median follow-up 2.7 years, the overall survival was 59.5% in nSAA and 37.8% in SAA/vSAA (P = 0.051). Median survival in nSAA and SAA/vSAA were 7.0 years and 1.8 years, respectively (P = 0.045). However, the responders of SAA/vSAA had longer survival than nonresponders of the nSAA group. Conclusion These results revealed longer survival among the responders of patients with AA, even in the SAA/vSAA group. However, close monitoring of therapeutic responses is still performed. Switching therapy is necessary when remission is undetected after 6 months of oxymetholone treatment.
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Affiliation(s)
- Worachaya Pengthina
- Pharmaceutical Care Training Center, Department of Pharmaceutical Care, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Pirun Saelue
- Clinical Hematology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand,Correspondence: Pirun Saelue, Clinical Hematology Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand, Tel +66 7445 1481; +66 81543 3031, Fax +66 7428 1457, Email
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7
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Unresponsive Severe Aplastic Anemia in a Young Patient: Case Report and Short Review of the Literature. JOURNAL OF INTERDISCIPLINARY MEDICINE 2021. [DOI: 10.2478/jim-2021-0013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Abstract
Aplastic anemia or medullary aplasia is a medical condition characterized by pancytopenia and is associated with a high prevalence of morbidity and mortality. In patients in whom bone marrow transplantation cannot be attempted, an immunosuppressive regimen is considered to be the first-line therapy. Also, the addition of eltrombopag from the first day of immunosuppressive treatment seems to significantly increase response rate. Unfortunately, there are a small number of patients who remain unresponsive to all these therapies. Here we present the case of a young woman who was referred by the family doctor complaining of marked physical asthenia, new onset dyspnea, and dizziness. Apart from a severe pancytopenia, no further changes have been brought to light by paraclinical investigations. After multiple secondary causes were excluded, the patient was diagnosed with idiopathic aplastic anemia. Even if bone marrow transplant was the first-line therapy in this case, because of the severe leukopenia, it was not possible to determine the HLA type. Therefore, the patient was prescribed immunosuppressive treatment. Despite the three drug-associated therapy (horse anti-thymocyte globulin, cyclosporin A, and eltrombopag), the response was unsatisfactory, with the persistence of severe pancytopenia.
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8
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Zhang MX, Wang Q, Wang XQ. Hematopoietic Stem-Cell Transplantation versus Immunosuppressive Therapy in Patients with Adult Acquired Severe Aplastic Anemia: A Cost-Effectiveness Analysis. Int J Gen Med 2021; 14:3529-3537. [PMID: 34290524 PMCID: PMC8289465 DOI: 10.2147/ijgm.s310844] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/24/2021] [Indexed: 01/10/2023] Open
Abstract
Objective Controversy remains regarding which therapy to initially select for severe aplastic anemia (SAA) patients aged 35–50. This cost-effectiveness analysis aimed to use the Markov model to compare immunosuppressive therapy (IST) with hematopoietic stem-cell transplantation (HSCT) in age-stratified patients with SAA. Methods A cost-effectiveness analysis using a Markov model compared IST with HSCT in age-stratified patients with SAA. Baseline data were derived from a systematic literature review and collected from Huashan Hospital, Fudan University. The primary outcome was an incremental cost-effectiveness ratio (ICER). Results The HSCT strategy dominated in patients aged 18–35 even though it was $146,970 more expensive than IST, and the ICER of HSCT to IST was $14,054.19/quality-adjusted life-year (QALY), which was less than the willingness-to-pay value of $25,397.57/QALY. The IST strategy dominated in patients aged 35–50, because it was $72,009 less expensive than HSCT and yielded 3.24 QALYs more than HSCT. The model was vigorous in the sensitivity analyses of the key variables tested through the plausible ranges that were acquired from costing sources and previously published literature. Conclusion The preferred induction strategy for patients aged 18–35 with SAA appears to be HSCT, and the preferred strategy for patients aged 35–50 is IST, which minimizes costs while maximizing QALYs.
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Affiliation(s)
- Meng-Xue Zhang
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
| | - Qian Wang
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
| | - Xiao-Qin Wang
- Department of Hematology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
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9
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Haploidentical BMT for severe aplastic anemia with intensive GVHD prophylaxis including posttransplant cyclophosphamide. Blood Adv 2021; 4:1770-1779. [PMID: 32343796 DOI: 10.1182/bloodadvances.2020001729] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/25/2020] [Indexed: 12/15/2022] Open
Abstract
Severe aplastic anemia (SAA) is a stem cell disorder often treated with bone marrow transplantation (BMT) to reconstitute hematopoiesis. Outcomes of related HLA-haploidentical (haplo) donors after reduced-intensity conditioning with intensive graft-versus-host disease (GVHD) prophylaxis including posttransplantation cyclophosphamide are presented here from 37 SAA, 20 relapsed/refractory (R/R), and 17 treatment-naïve (TN) SAA patients. Median follow-up is 32 months (90% confidence interval [CI], 29-44). The median age was 25 (range, 4-69) years. The median time to neutrophil recovery was 17 days (range, 15-88). Four of 37 patients (11%) experienced graft failure (GF). There was 1 primary GF of 20 patients in the R/R group and 3 of 17 in the TN group at 200 cGy (1 primary, 2 secondary), but none in the 10 patients who received 400 cGy total body irradiation. Two patients with GF succumbed to infection and 2 were rescued with second haplo BMT. The overall survival for all patients is 94% (90% CI, 88-100) at 1 and 2 years. The cumulative incidence of grade II-IV acute GVHD at day 100 is 11%. The cumulative index of chronic GVHD at 2 years is 8%. Similar results were seen in 10 SAA patients who received the identical nonmyeloablative regimen with posttransplant cyclophosphamide but matched donor transplants. Haplo BMT with posttransplant cyclophosphamide represents a potential cure in SAA, with all 20 R/R currently alive, disease-free, and with no evidence of active GVHD. Extending this approach to TN patients was associated with higher GF rates, but an increase in total body irradiation dose to 400 cGy was associated with durable engraftment without greater early toxicity. Nonmyeloablative haplo BMT in TN SAA could lead to a paradigm shift, such that essentially all patients can proceed quickly to safe, curative BMT. These trials were registered at www.cincialtrials.gov as #NCT02224872) and #NCT02833805.
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10
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Lan Y, Liu F, Chang L, Liu L, Zhang Y, Yi M, Cai Y, Feng J, Han Z, Han Z, Zhu X. Combination of umbilical cord mesenchymal stem cells and standard immunosuppressive regimen for pediatric patients with severe aplastic anemia. BMC Pediatr 2021; 21:102. [PMID: 33639900 PMCID: PMC7912947 DOI: 10.1186/s12887-021-02562-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 02/19/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Defects of bone marrow mesenchymal stem cells (BM-MSCs) in proliferation and differentiation are involved in the pathophysiology of aplastic anemia (AA). Infusion of umbilical cord mesenchymal stem cells (UC-MSCs) may improve the efficacy of immunosuppressive therapy (IST) in childhood severe aplastic anemia (SAA). METHODS We conducted an investigator-initiated, open-label, and prospective phase IV trial to evaluate the safety and efficacy of combination of allogenic UC-MSCs and standard IST for pediatric patients with newly diagnosed SAA. In mesenchymal stem cells (MSC) group, UC-MSCs were injected intravenously at a dose of 1 × 106/kg per week starting on the 14th day after administration of rabbit antithymocyte globulin (ATG), for a total of 3 weeks. The clinical outcomes and adverse events of patients with UC-MSCs infusion were assessed when compared with a concurrent control group in which patients received standard IST alone. RESULTS Nine patients with a median age of 4 years were enrolled as the group with MSC, while the data of another 9 childhood SAA were analysed as the controls. Four (44%) patients in MSC group developed anaphylactic reactions which were associated with rabbit ATG. When compared with the controls, neither the improvement of blood cell counts, nor the change of T-lymphocytes after IST reached statistical significance in MSC group (both p > 0.05) and there were one (11%) patient in MSC group and two (22%) patients in the controls achieved partial response (PR) at 90 days after IST. After a median follow-up of 48 months, there was no clone evolution occurring in both groups. The 4-year estimated overall survival (OS) rate in two groups were both 88.9% ± 10.5%, while the 4-year estimated failure-free survival (FFS) rate in MSC group was lower than that in the controls (38.1% ± 17.2% vs. 66.7% ± 15.7%, p = 0.153). CONCLUSIONS Concomitant use of IST and UC-MSCs in SAA children is safe but may not necessarily improve the early response rate and long-term outcomes. This clinical trial was registered at ClinicalTrials.gov, identifier: NCT02218437 (registered October 2013).
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Affiliation(s)
- Yang Lan
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Fang Liu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Lixian Chang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Lipeng Liu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Yingchi Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Meihui Yi
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Yuli Cai
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Jing Feng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China
| | - Zhibo Han
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China.,National Engineering Research Center of Cell Products, Tianjin AmCellGene Engineering Co., Ltd, Tianjin, 300020, China
| | - Zhongchao Han
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China.,National Engineering Research Center of Cell Products, Tianjin AmCellGene Engineering Co., Ltd, Tianjin, 300020, China
| | - Xiaofan Zhu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, 288 Nanjing Road, Heping District, Tianjin, 300020, China.
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11
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Shukla S, Tripathi AK, Verma SP, Awasthi N. Prognostic value of TNF-a-308 and IFN-g-874 single nucleotide polymorphisms and their plasma levels in patients with aplastic anemia. Blood Res 2020; 55:193-199. [PMID: 33139586 PMCID: PMC7784124 DOI: 10.5045/br.2020.2020009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 08/20/2020] [Accepted: 09/25/2020] [Indexed: 01/03/2023] Open
Abstract
Background Aplastic anemia (AA), an unusual hematological disease, is characterized by hypoplasia of the bone marrow and failure to form blood cells of all three lineages resulting in pancytopenia. This study aimed to investigate TNF-α-308 and IFN-γ-874 gene polymorphisms and their respective plasma protein levels in patients with AA and healthy controls. Methods Two hundred and forty individuals were included in this study; the case group comprised 120 AA patients, while 120 healthy individuals served as controls. Genotyping was performed using the PCR-restriction length fragment polymorphism method and TNF-α-308 and IFN-γ-874 plasma levels were evaluated using an ELISA kit. Results There was a significantly higher prevalence of the IFN-γ-874 genotype in patients with AA than in healthy controls, while the TNF-α-308 genotype was associated with lower risk of developing AA. Furthermore, the levels of both TNF-α-308 and IFN-γ-874 were higher in the plasma of AA patients. Conclusion Our findings suggest that the IFN-γ-874 genotype may be a greater risk factor in the causation of AA, whereas the TNF-α-308 genotype has a protective role in the North Indian population.
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Affiliation(s)
- Saurabh Shukla
- Department of Clinical Hematology, King George's Medical University, Lucknow, India
| | - Anil Kumar Tripathi
- Department of Clinical Hematology, King George's Medical University, Lucknow, India
| | | | - Nidhi Awasthi
- Department of Clinical Hematology, King George's Medical University, Lucknow, India
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12
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Komiya T, Gohda M, Shioya H, Katsumata S. Sphingosine 1-Phosphate Receptor Modulator ONO-4641 Regulates Trafficking of T Lymphocytes and Hematopoietic Stem Cells and Alleviates Immune-Mediated Aplastic Anemia in a Mouse Model. J Pharmacol Exp Ther 2020; 376:250-260. [PMID: 33257316 DOI: 10.1124/jpet.120.000277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 11/23/2020] [Indexed: 11/22/2022] Open
Abstract
ONO-4641 is a second-generation sphingosine 1-phosphate (S1P) receptor modulator that exhibits selectivity for S1P receptors 1 and 5. Treatment with ONO-4641 leads to a reduction in magnetic resonance imaging disease measures in patients with relapsing-remitting multiple sclerosis. The objective of this study was to explore the potential impact of ONO-4641 treatment based on its immunomodulatory effects. Severe aplastic anemia is a bone marrow (BM) failure disease typically caused by aberrant immune destruction of blood progenitors. Although the T helper type 1-mediated pathology is well described for aplastic anemia, the molecular mechanisms driving disease progression remain undefined. We evaluated the efficacy of ONO-4641 in a mouse model of aplastic anemia. ONO-4641 reduced the severity of BM failure in a dose-dependent manner, resulting in higher blood and BM cell counts. By evaluating the mode of action, we found that ONO-4641 inhibited the infiltration of donor-derived T lymphocytes to the BM. ONO-4641 also induced the accumulation of hematopoietic stem cells in the BM of model mice. These observations indicate, for the first time, that S1P receptor modulators demonstrate efficacy in the mouse model of aplastic anemia and suggest that treatment with ONO-4641 might delay the progression of aplastic anemia. SIGNIFICANCE STATEMENT: ONO-4641 is a second-generation sphingosine 1-phosphate (S1P) receptor modulator selective for S1P receptors 1 and 5. In this study, we demonstrated that ONO-4641 regulates the trafficking of T lymphocytes along with hematopoietic stem and progenitor cells, leading to alleviation of pancytopenia and destruction of bone marrow in a bone marrow failure-induced mouse model mimicking human aplastic anemia.
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Affiliation(s)
- Takaki Komiya
- Department of Molecular Physiology, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu-shi, Shiga, Japan (H.S); Discovery Research Laboratories, Ono Pharmaceutical Co., Ltd., Mishima-gun, Osaka, Japan (T.K, M.G., H.S., S.K.).
| | - Masashi Gohda
- Department of Molecular Physiology, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu-shi, Shiga, Japan (H.S); Discovery Research Laboratories, Ono Pharmaceutical Co., Ltd., Mishima-gun, Osaka, Japan (T.K, M.G., H.S., S.K.)
| | - Hiroki Shioya
- Department of Molecular Physiology, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu-shi, Shiga, Japan (H.S); Discovery Research Laboratories, Ono Pharmaceutical Co., Ltd., Mishima-gun, Osaka, Japan (T.K, M.G., H.S., S.K.)
| | - Seishi Katsumata
- Department of Molecular Physiology, College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu-shi, Shiga, Japan (H.S); Discovery Research Laboratories, Ono Pharmaceutical Co., Ltd., Mishima-gun, Osaka, Japan (T.K, M.G., H.S., S.K.)
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Kamranzadeh Fumani H, Jalili M, Rad S, Babakhani D, Maleki N, Asadollah Mousavi S, Ghavamzadeh A. Outcome of peripheral blood allogeneic hematopoietic stem cell transplantation as a treatment option in patients with severe aplastic anemia between 40 and 50 years. Hematol Oncol Stem Cell Ther 2020; 15:52-58. [PMID: 32652051 DOI: 10.1016/j.hemonc.2020.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 06/13/2020] [Indexed: 11/16/2022] Open
Abstract
The frontline treatment for patients younger than 40 years with severe aplastic anemia (AA) is allogeneic hematopoietic stem cell transplantation (HSCT) from a human leukocyte antigen-identical sibling donor. However, in patients with severe AA who are older than 40 years, allogeneic HSCT has been found to be associated with increased treatment-related mortality and toxicity, even when matched sibling donors are used. We report our institutional experience with allogeneic HSCT in patients with severe AA between 40 and 50 years. A total of 19 patients with severe AA were included in the study. Overall survival (OS) and disease-free survival (DFS) were estimated using the Kaplan-Meier method. The mean age of patients at the time of transplant was 43.79 years, and 57.9% were male. The mortality rate was 36.8%, attributed to infection (10.5%), relapse (15.8%), and renal failure (5.3%) in all cases. Acute graft-versus-host disease (GVHD) occurred in five patients (26.3%), and chronic GVHD occurred in two patients (10.5%). The 5-year OS was 62% and the 5-year DFS was 52%. We found that the patient's age, platelet level prior to transplantation, and the number of CD3 cells infused for each transplant were independent prognostic factors for OS, and the age and sex of the patient, graft rejection, and platelet level prior to transplantation were significant prognostic factors associated with DFS. We recommend that immunosuppressive therapy be considered as a first-line treatment in patients with severe AA who are older than 40 years. Allogeneic HSCT can be considered a valid alternative option in patients whose suppression therapy fails.
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Affiliation(s)
- Hosein Kamranzadeh Fumani
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Jalili
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Soroush Rad
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Davood Babakhani
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasrollah Maleki
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - Seyed Asadollah Mousavi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ardeshir Ghavamzadeh
- Hematology, Oncology and Stem Cell Transplantation Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Outcomes of allogeneic haematopoietic stem cell transplantation for patients with severe aplastic anaemia using the porcine antilymphocyte globulin-containing conditioning regimen. Ann Hematol 2020; 99:1863-1871. [PMID: 32556453 DOI: 10.1007/s00277-020-04111-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
Antithymocyte globulin (ATG) is widely used for allogeneic haematopoietic stem cell transplantation (allo-HSCT) in severe aplastic anaemia (SAA). Only rabbit-ATG (r-ATG) and porcine-antilymphocyte globulin (p-ALG) are available in China, but the p-ALG-containing conditioning regimen for allo-HSCT in SAA has seldom been reported. In this study, we retrospectively evaluated the outcomes of 41 SAA patients receiving allo-HSCT with a p-ALG-containing conditioning regimen in our transplantation centre. All patients engrafted, and no death during conditioning was observed. The actuarial 3-year overall survival (OS) rates were 95.1 ± 3.4%. The actuarial 3-year disease-free survival (DFS) rates were 85.0 ± 5.7%. Acute graft-versus-host disease (aGVHD) predicted inferior OS (p < 0.05). The interval from diagnosis to transplantation for more than 100 days predicted an inferior DFS rate (p < 0.05) and a higher graft rejection/poor graft function (GR/PGF) rate (p < 0.01). In conclusion, the p-ALG-containing regimen showed satisfactory effects and safety in allo-HSCT for SAA patients. P-ALG could be a potential alternative preparation for r-ATG in SAA allo-HSCT.
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Haploidentical hematopoietic stem cell transplantation in aplastic anemia: a systematic review and meta-analysis of clinical outcome on behalf of the severe aplastic anemia working party of the European group for blood and marrow transplantation (SAAWP of EBMT). Bone Marrow Transplant 2020; 55:1906-1917. [PMID: 32346079 DOI: 10.1038/s41409-020-0897-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/15/2020] [Accepted: 03/31/2020] [Indexed: 11/08/2022]
Abstract
Aplastic anemia (AA) is a serious hematological disorder, which is solely cured by hematopoietic stem cell transplantation (HSCT). Haploidentical HSCT is an emerging modality with encouraging outcomes in several blood conditions. The present study aims to comprehensively assess the feasibility and safety of haploidentical HSCT in patients with severe and very severe AA. It is a systematic review and meta-analysis of studies related to haploidentical stem cell transplantation in idiopathic AA investigating rates of successful engraftment, acute graft-versus-host disease (aGvHD), chronic GvHD (cGvHD), transplant-related mortality (TRM), and posttransplantation viral infections (including cytomegalovirus [CMV]) in patients with AA. The effects of reduced-intensity conditioning (RIC) and nonmyeloablative conditioning (NMA), as well as various GvHD prophylaxis regimens on these outcomes were evaluated. In total 15 studies were identified, (577 patients, 58.9% males), successful engraftment was observed in 97.3% of patients (95% CI, 95.9-98.7) while grades II-IV aGvHD and cGvHD were reported in 26.6% and 25.0%, respectively. The pooled incidence of TRM was 6.7% per year (95% CI, 4.0-9.4). RIC regimens were associated with higher proportions of successful engraftment (97.7% vs 91.7%, P = 0.03) and aGvHD (29.5% vs 18.7%, P = 0.008) when compared with NMA regimens with no differences in cGvHD or mortality incidence. When compared with methotrexate-containing regimens and other regimens, posttransplant cyclophosphamide-containing regimens reduced the rates of aGvHD (28.6%, 27.8%, and 12.8%, respectively, P = 0.02), CMV viremia (55.7%, 38.6%, and 10.4%, respectively, P < 0.001), and CMV disease in initially viremic patients (2.1%, 33.0%, and 0%, respectively, P < 0.001). We have concluded that Haploidentical HSCT was associated with promising outcomes in terms of successful engraftment and reduced complications. Future prospective trials are needed to identify the preferred conditioning regimen, GvHD prophylaxis, and graft source in the setting of haploidentical transplant for AA.
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Shukla S, Tripathi AK, Verma SP, Yadav DK, Tripathi RK, Maurya S, Awasthi N. Association of Interleukin-1β-31C/T, -511T/C and -3954C/T Single Nucleotide Polymorphism and Their Blood Plasma Level in Acquired Aplastic Anemia. Indian J Hematol Blood Transfus 2020; 37:210-219. [PMID: 33867726 DOI: 10.1007/s12288-020-01281-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 04/15/2020] [Indexed: 11/30/2022] Open
Abstract
Aplastic anemia (AA) is an immune-mediated disorder in which hematopoietic stem and progenitor cells are targeted by a number of cellular and molecular pathways. This case control study aims to investigate the association of interleukin-1beta (IL-1β) gene polymorphisms, (IL-1β-31, IL-1β-511 and IL-1β-3954) and their plasma levels with acquired AA. Genotyping was done by Restricted Fragment Length Polymorphism (PCR-RFLP) method and IL-1β plasma levels were evaluated in peripheral blood using ELISA. Increased level of IL-1β was reported to be significant in cases as compared to controls. The susceptibility of developing AA was higher in the cases for IL-1β-3954 genotype. IL-1β-511 genotype showed significant association with the severity groups of AA. No significant association was noticed in responder versus non-responder group. Plasma level of IL-1β gene was found to be significantly higher in severe and very-severe group of AA versus control group. Our findings suggest that IL-1β gene and its genotypes might be involved in the pathophysiology of AA and play a central role in the etiopathogenesis of AA.
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Affiliation(s)
- Saurabh Shukla
- Department of Clinical Hematology, King George's Medical University, Chowk, Lucknow, 226003 India
| | - Anil Kumar Tripathi
- Department of Clinical Hematology, King George's Medical University, Chowk, Lucknow, 226003 India
| | - Shailendra Prasad Verma
- Department of Clinical Hematology, King George's Medical University, Chowk, Lucknow, 226003 India
| | - Deependra Kumar Yadav
- Department of Clinical Hematology, King George's Medical University, Chowk, Lucknow, 226003 India
| | - R K Tripathi
- Division of Toxicology, Central Drug Research Institute, Sitapur Road, Jankipuram Extension, Lucknow, 226031 India
| | - Shweta Maurya
- Department of Clinical Hematology, King George's Medical University, Chowk, Lucknow, 226003 India
| | - Nidhi Awasthi
- Department of Pediatrics, King George's Medical University, Chowk, Lucknow, 226003 India
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Liu C, Sun Y, Shao Z. Current Concepts of the Pathogenesis of Aplastic Anemia. Curr Pharm Des 2020; 25:236-241. [PMID: 30864496 DOI: 10.2174/1381612825666190313113601] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/08/2019] [Indexed: 02/07/2023]
Abstract
Abnormal activation of the immune system plays an important role in the pathogenesis of aplastic anemia (AA). Various immune cells and cytokines constitute a complex immune network, leading to bone marrow failure. The known pathogenesis is an increase of the myeloid dendritic cell (mDC)/ plasmacytoid dendritic cell (pDC) ratio, which causes the ratio of T helper (Th)1/Th2 to be skewed in favor of Th1 and eventually leads to an abnormal activation of cytotoxic T lymphocyte (CTL). The antigens that stimulate T cells in the context of AA remain unknown. In this process, regulatory T (Treg), Th17, natural killer (NK) cell, memory T cell and negative hematopoietic regulatory factors are also involved. In addition, genetic background (e.g., chromosomal abnormalities, telomere attrition, somatic cell mutations), abnormal bone marrow hematopoietic microenvironment and viral infection may also contribute to the pathogenesis of AA. This review summarizes the recent studies of the pathogenesis of AA and the current status of AA research.
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Affiliation(s)
- Chunyan Liu
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan St, Heping District, Tianjin, China
| | - Yingying Sun
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan St, Heping District, Tianjin, China
| | - Zonghong Shao
- Department of Hematology, Tianjin Medical University General Hospital, 154 Anshan St, Heping District, Tianjin, China
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Suzuki Y, Mizuno M, Sakata F, Kojima H, Sato Y, Kishimoto M, Suzuki N, Kinashi H, Saito S, Katsuno T, Kosugi T, Maruyama S, Murata M, Kiyoi H, Ito Y. Successful Introduction of Peritoneal Dialysis in an End-stage Renal Failure Patient with Idiopathic Aplastic Anemia. Intern Med 2020; 59:683-687. [PMID: 32115518 PMCID: PMC7086332 DOI: 10.2169/internalmedicine.3775-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
A 45-year-old man with idiopathic aplastic anemia required renal replacement therapy (RRT) due to end-stage renal disease (ESRD). We succeeded in inserting the peritoneal dialysis (PD) catheter under cover of frequent red blood cell and platelet infusions because of severe pancytopenia. During the one-year period after starting PD using an ultraviolet-ray sterilization device, he developed severe leukopenia but no PD-related peritonitis or exit site/tunnel infection until he died of pneumonia. This case suggests that PD might be a suitable choice as RRT in ESRD patients with aplastic anemia, even in those with severe pancytopenia.
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Affiliation(s)
- Yasuhiro Suzuki
- Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Japan
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Masashi Mizuno
- Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Japan
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Fumiko Sakata
- Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Japan
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Hiroshi Kojima
- Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Japan
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Yuka Sato
- Renal Replacement Therapy, Nagoya University Graduate School of Medicine, Japan
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Mayuko Kishimoto
- Department of Transfusion Medicine, Nagoya University Graduate School of Medicine, Japan
| | - Nobuaki Suzuki
- Department of Transfusion Medicine, Nagoya University Graduate School of Medicine, Japan
| | - Hiroshi Kinashi
- Department of Nephrology and Rheumatology, Aichi Medical University, Japan
| | - Shoji Saito
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Takayuki Katsuno
- Department of Nephrology and Rheumatology, Aichi Medical University, Japan
| | - Tomoki Kosugi
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Shoichi Maruyama
- Division of Nephrology, Nagoya University Graduate School of Medicine, Japan
| | - Makoto Murata
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Japan
| | - Hitoshi Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Japan
| | - Yasuhiko Ito
- Department of Nephrology and Rheumatology, Aichi Medical University, Japan
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Alqahtany FS. Idiopathic Aplastic Anemia in Children and Adults: Diagnosis, Treatments, and Management - A Review. Curr Pharm Biotechnol 2019; 21:1282-1288. [PMID: 31820683 DOI: 10.2174/1389201021666191210141426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/12/2019] [Accepted: 07/18/2019] [Indexed: 11/22/2022]
Abstract
Aplastic Anemia (AA) is also known as idiopathic aplastic anemia (IAA) and the production of new blood cells ceases in AA, which leads to an abnormal hematological syndrome such as pancytopenia and suppression of hypo-cellular bone marrow. The pathophysiology of AA in most cases is immune-mediated and is stimulated by type 1 cytotoxic T cells. Reliable early diagnostic tests of IAA are not yet available, therefore most of the cases are identified in advanced stages. Recently, abnormal immune response and hematopoietic cell deficiencies are defined genetically, such as in target cells of telomere repair gene mutations and by the dysregulation of T-cell activation pathways. Importantly, anti-thymocyte globulins and cyclosporine-associated immunosuppression are successful treatments for restoring blood cell production in most of the cases, however, clonal hematologic diseases remain challenging. In the current review, we have discussed the common practices in the treatment, pathophysiology, diagnosis, and management of AA.
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Affiliation(s)
- Fatmah S Alqahtany
- Department of Pathology, Hematopathology Unit, College of Medicine, King Saud University, King Saud University Medical City, Riyadh, Saudi Arabia
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20
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Zheng ZY, Yu XL, Dai TY, Yin LM, Zhao YN, Xu M, Zhuang HF, Chong BH, Gao RL. Panaxdiol Saponins Component Promotes Hematopoiesis and Modulates T Lymphocyte Dysregulation in Aplastic Anemia Model Mice. Chin J Integr Med 2019; 25:902-910. [PMID: 31802424 DOI: 10.1007/s11655-019-3049-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2018] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To investigate the potential efficacy of panaxadiol saponins component (PDS-C) in the treatment of aplastic anemia (AA) model mice. METHODS Totally 70 mice were divided into 7 groups as follows: normal, model, low-, medium-, high-dose PDS-C (20, 40, 80 mg/kg, namely L-, M-, H-PDS-C), cyclosporine (40 mg/kg), and andriol (25 mg/kg) groups, respectively. An immune-mediated AA mouse model was established in BALB/c mice by exposing to 5.0 Gy total body irradiation at 1.0 Gy/min, and injecting with lymphocytes from DBA mice. On day 4 after establishment of AA model, all drugs were intragastrically administered daily for 15 days, respectively, while the mice in the normal and model groups were administered with saline solution. After treatment, the peripheral blood counts, bone marrow pathological examination, colony forming assay of bone marrow culture, T lymphocyte subpopulation analysis, as well as T-bet, GATA-3 and FoxP3 proteins were detected by flow cytometry and Western blot. RESULTS The peripheral blood of white blood cell (WBC), platelet, neutrophil counts and hemoglobin (Hb) concentration were significantly decreased in the model group compared with the normal group (all P<0.01). In response to 3 dose PDS-C treatment, the WBC, platelet, neutrophil counts were significantly increased at a dose-dependent manner compared with the model group (all P<0.01). The myelosuppression status of AA was significantly reduced in M-, H-PDS-C groups, and hematopoietic cell quantity of bone marrow was more abundant than the model group. The colony numbers of myeloid, erythroid and megakaryocytic progenitor cells in the model group were less than those of the normal mice in bone marrow culture, while, PDS-C therapy enhanced proliferation of hematopoietic progenitor cells by significantly increasing colony numbers (all P<0.01). Furthermore, PDS-C therapy increased peripheral blood CD3+ and CD3+CD4+ cells and reduced CD3+CD8+ cells (P<0.05 or P<0.01). Meanwhile, PDS-C treatment at medium- and high doses groups also increased CD4+CD25+FoxP3+ cells, downregulated T-bet protein expression, and upregulated GATA-3 and FoxP3 protein expressions in spleen cells (P<0.05). CONCLUSION PDS-C possesses dual activities, promoting proliferation hematopoietic progenitor cells and modulating T lymphocyte immune functions in the treatment of AA model mice.
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Affiliation(s)
- Zhi-Yin Zheng
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Xiao-Ling Yu
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Tie-Ying Dai
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Li-Ming Yin
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Yan-Na Zhao
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Min Xu
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Hai-Feng Zhuang
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China
| | - Beng Hock Chong
- Department of Hematology, St George Hospital, St George Clinical School, University of New South Wales, Kogarah, NSW, 2217, Australia
| | - Rui-Lan Gao
- Institution of Hematology Research, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310006, China.
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T-cell expression of Bruton's tyrosine kinase promotes autoreactive T-cell activation and exacerbates aplastic anemia. Cell Mol Immunol 2019; 17:1042-1052. [PMID: 31431692 PMCID: PMC7608443 DOI: 10.1038/s41423-019-0270-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/13/2019] [Indexed: 12/21/2022] Open
Abstract
The role of Bruton’s tyrosine kinase (BTK) in BCR signaling is well defined, and BTK is involved in B-cell development, differentiation, and malignancies. However, the expression of Btk in T cells and its role in T-cell function remain largely unknown. Here, we unexpectedly found high expression and activation of BTK in T cells. Deficiencies in BTK resulted in the impaired activation and proliferation of autoreactive T cells and ameliorated bone marrow failure (BMF) in aplastic anemia. Mechanistically, BTK is activated after TCR engagement and then phosphorylates PLCγ1, thus promoting T-cell activation. Treatment with acalabrutinib, a selective BTK inhibitor, decreased T-cell proliferation and ameliorated BMF in mice with aplastic anemia. Our results demonstrate an unexpected role of BTK in optimal T-cell activation and in the pathogenesis of autoimmune aplastic anemia, providing insights into the molecular regulation of T-cell activation and the pathogenesis of T-cell-mediated autoimmune disease.
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Gudina EK, Amare H, Benti K, Ibrahim S, Mekonnen G. Pancytopenia of Unknown Cause in Adult Patients Admitted to a Tertiary Hospital in Ethiopia: Case series. Ethiop J Health Sci 2019; 28:375-382. [PMID: 30607050 PMCID: PMC6308738 DOI: 10.4314/ejhs.v28i4.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Over the past few years, we have witnessed a dramatic increase in the number of patients presenting with severe pancytopenia to Jimma University Hospital. We now present sociodemographic and clinical characteristics of adult patients admitted with pancytopenia of unknown cause to Jimma University Hospital during the period of March 2015 to June 2016. Complete blood count and other diagnostic tests were done for all patients to uncover underlying causes. Result Out of 65 cases admitted with pancytopenia during the specified period, 40 were excluded for various reasons. The rest 25 patients were included in this review. The mean age was 32.1 years (SD=14.9); 14 were younger than 30 years of age. The mean hemoglobin level, white cell count and platelet count were 48.6 g/L (SD=1.9), 1,918 /µL (SD=879.8) and 36,200 /µL (SD=26,131) respectively. The major presenting symptoms were generalized malaise and fever. No geographic or seasonal clustering of the cases was seen. Conclusion The number of cases with pancytopenia of unidentified cause seen at the hospital over the specified period is alarmingly high and deserves great attention. The hematologic alteration in most of the patients was found to be severe with poor clinical outcome. This calls for large scale community based investigation to uncover the root cause of the problem.
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Affiliation(s)
| | - Hiwot Amare
- Department of Internal Medicine, Jimma University, Jimma
| | - Kasahun Benti
- Department of Internal Medicine, Jimma University, Jimma
| | - Shoba Ibrahim
- Department of Internal Medicine, Jimma University, Jimma
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Li Y, Ding S, Liu C, Chen T, Liu H, Li L, Shao Z, Fu R. Abnormalities of quantities and functions of CD56bright natural killer cells in non-severe aplastic Anemia. ACTA ACUST UNITED AC 2019; 24:405-412. [PMID: 30907293 DOI: 10.1080/16078454.2019.1590963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVES The mechanism of non-severe aplastic anemia (NSAA) is not clear. It may be different from severe aplastic anemia (SAA). CD56bright NK cells (regulatory NK cells) is a subgroup of NK cells that produce immunoregulatory cytokines and express high-affinity IL-2 receptor. To investigate CD56bright NK cells quantities and function in patients with NSAA and to explore how CD56bright NK cells participate in the progress of this disease. METHODS In this study, we analyzed the quantitative and functional changes of CD56bright NK cells in peripheral blood of patients with NSAA by using Flow Cytometry (FCM) before and after immunosuppressive therapy (IST). The expressions of activating receptor (NKG2D, NKp46, NKp44), inhibitory receptor (NKG2A, CD158a, CD158b) and perforin and granzyme B were detected by FCM. IL-2 and IL-18 levels in serum were detected by ELISA. The correlation between these parameters and clinical indicators of patients were evaluated. RESULTS We found that the percentage of CD56bright NK cells in newly diagnosed NSAA patients was higher than that in normal controls (p = .011, p < .05). The median expression of NKG2D in patients with NSAA was higher compared to that in normal controls (p = .021, p < .05), and the expression of CD158a was lower (p = .047, p < .05). The concentrations of IL-2 and IL-18 in the serum of patients with NSAA were higher than those in normal group. CONCLUSION These findings suggest that increased and activated CD56bright NK cells might play a protective role in the pathogenesis of NSAA.
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Wu LQ, Shen YY, Zhang Y, Kuang YM, Fang BM, Wang ZZ, Fu LJ, Shao KD, Shen JP, Zhou YH, Shen YP, Ye BD, Zheng ZY, Chen JF, Lin SY. Multiple risks analysis for aplastic anemia in Zhejiang, China: A case-control study. Medicine (Baltimore) 2019; 98:e14519. [PMID: 30813154 PMCID: PMC6408124 DOI: 10.1097/md.0000000000014519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 12/19/2018] [Accepted: 01/23/2019] [Indexed: 12/20/2022] Open
Abstract
To understand the risks associated with aplastic anemia (AA) in 4 cities of Zhejiang Province, China, with special focus on the joint contributions of multiple risks.Based on an Electronic Data Capture (EDC), a case control study was carried out. Data regarding socio-demographic, diseases history, living habits, and exposures to toxic substances, etc., were collected through survey questionnaires. t Test, chi-square test, or non-parametric rank sum test, and univariate and multivariate Logistic regression analysis were conducted to analyze data.The univariate logistic regression analysis results indicated that among all study participants (n = 1802), AA was associated with over 30 risks, in terms of their individual behaviors, daily and environmental exposures, diseases history, and family history. Multivariate logistic regression analysis further confirmed that the independent risks related to AA included presence of chemical factory within 3 km of living residence (odds ratio [OR] = 8.73, 95% CI: 1.42-53.74, P = .019), living in a newly decorated house/apartment (OR = 25.37, 95% CI: 4.44-144.81, P < .001), vegetarian diet (OR = 131.60, 95% CI: 3.45-5020.16, P = .009), preference of sugar (OR = 89.38, 95% CI: 7.22-1106.44, P < .001), preference of oily food (OR = 55.68, 95% CI: 5.12-605.26, P = .001), drinking lake water or pond water (OR = 58.05, 95% CI: 3.21-1049.81, P < .001), habit of staying up late (OR = 11.87, 95% CI: 3.43-41.02, P < .001), infection history (OR = 10.08, 95% CI: 2.75-36.93, P < .001). Result of receiver operating characteristic curve (ROC) analysis on the joint contribution of multiple risks indicated that AA was 13.835 times likely to occur when exposed to ≥1 risks than those exposed to 0 risks (95% CI: 9.995-19.149).Our study results demonstrated a comprehensive epidemiological pattern, in which the joint contributions of individual inherited health status, environment exposure, and individual behaviors lead to the occurrence of AA.
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Affiliation(s)
- Li-qiang Wu
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Ying-ying Shen
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Ying Zhang
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Yue-min Kuang
- Department of Hematology, Jinhua People's Hospital, Jinhua
| | - Bing-mu Fang
- Department of Hematology, Lishui City People's Hospital, Lishui
| | - Zhou-zheng Wang
- Department of Hematology, The Second Hospital of Jiaxing, Jiaxing
| | - Li-juan Fu
- Department of Hematology, The Second Affiliated Hospital of Zhejiang Chinese Medical University
| | - Ke-ding Shao
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Jian-ping Shen
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Yu-hong Zhou
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Yi-ping Shen
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Bao-dong Ye
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Zhi-yin Zheng
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Jun-fa Chen
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
| | - Sheng-yun Lin
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University
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Ding S, Liu C, Li Y, Liu H, Liu Z, Chen T, Zhang T, Shao Z, Fu R. Expression of C1q in the serum of patients with non‑severe aplastic anemia, and its association with disease severity. Mol Med Rep 2018; 19:1194-1202. [PMID: 30569170 PMCID: PMC6323203 DOI: 10.3892/mmr.2018.9754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 11/13/2018] [Indexed: 01/04/2023] Open
Abstract
A type of aplastic anemia (AA), non-severe aplastic anemia (NSAA) is defined as AA that does not meet the diagnostic criteria of severe aplastic anemia (SAA). Complement component 1q (C1q) has an important role in the pathogenesis of various autoimmune diseases; however, the role of C1q in the immune pathogenesis of NSAA is not clear. The current study aimed to determine whether C1q has an important role in the pathogenesis of NSAA. Isobaric tags for relative and absolute quantitation (iTRAQ) was used to compare the protein expression in bone marrow mononuclear cells from patients with NSAA and healthy volunteers. Pathway enrichment analysis was performed to determine the biological functions involved in NSAA. The differential expression of C1q was marked compared with other proteins. Subsequently, the concentration of C1q in serum samples was determined using ELISA and the correlation of C1q levels and NSAA severity was evaluated. The serum concentrations of C1q were significantly lower in untreated patients with newly diagnosed NSAA compared with NSAA cases in remission and normal controls. Furthermore, there was no significant difference in C1q concentration between newly diagnosed patients with NSAA and patients with autoimmune hemolytic anemia or immune thrombocytopenia. The serum concentration of C1q in newly diagnosed NSAA was significantly lower in patients with SAA (P<0.0001); whereas, there was no significant difference between the patients with SAA, patients with NSAA remission and normal controls (P>0.05). Additionally, the serum C1q concentration was significantly correlated with granulocyte counts, the level of hemoglobin, platelet counts, reticulocyte percentage and remission in patients with NSAA. The serum C1q concentration was also positively correlated with the myeloid/plasmacytoid dendritic cell ratio, and negatively correlated with the CD4(+)/CD8(+) ratio. These findings suggested that C1q may be a reliable serological marker for monitoring and evaluating disease severity in patients with NSAA. C1q may have an important role in the immune pathogenesis of NSAA.
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Affiliation(s)
- Shaoxue Ding
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Chunyan Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Yang Li
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Hui Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Zhaoyun Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Tong Chen
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Tian Zhang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Zonghong Shao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
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Wang Y, Niu ZY, Guo YJ, Wang LH, Lin FR, Zhang JY. IL-11 promotes the treatment efficacy of hematopoietic stem cell transplant therapy in aplastic anemia model mice through a NF-κB/microRNA-204/thrombopoietin regulatory axis. Exp Mol Med 2017; 49:e410. [PMID: 29217821 PMCID: PMC5750475 DOI: 10.1038/emm.2017.217] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/30/2017] [Accepted: 06/07/2017] [Indexed: 12/26/2022] Open
Abstract
Hematopoietic stem cell (HSC) transplantation could be of therapeutic value for aplastic anemia (AA) patients, and immunosuppressants may facilitate the efficiency of the procedure. As anti-inflammatory cytokine interleukin-11 (IL-11) has a thrombopoietic effect, its use in cases of chronic bone marrow failure, such as AA, has been proposed to induce HSC function. However, the putative mechanisms that may support this process remain poorly defined. We found that decreased miR-204-5p levels were coincident with increased proliferation in mouse HSCs following exposure to IL-11 in vitro. Through inhibiting NF-кB activity, miR-204-5p repression was demonstrated to be a downstream effect of IL-11 signaling. miR-204-5p was shown to directly target thrombopoietin (TPO) via sequence-dependent 3′-UTR repression, indicating that this microRNA-dependent pathway could serve an essential role in supporting IL-11 functions in HSCs. Increased TPO expression in HSCs following IL-11 exposure could be mimicked or blocked by inhibiting or overexpressing miR-204-5p, respectively. Consistent with these in vitro findings, IL-11 promoted HSC engraftment in a mouse model of AA, an effect that was attenuated in cells overexpressing miR-204-5p. The reduction in miR-204-5p levels is an integral component of IL-11 signaling that may play an essential role in treating AA.
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Affiliation(s)
- Yan Wang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Zhi-Yun Niu
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Yu-Jie Guo
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Li-Hua Wang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Feng-Ru Lin
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Jing-Yu Zhang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
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Mesenchymal Stem Cell Benefits Observed in Bone Marrow Failure and Acquired Aplastic Anemia. Stem Cells Int 2017; 2017:8076529. [PMID: 29333168 PMCID: PMC5733198 DOI: 10.1155/2017/8076529] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/15/2017] [Accepted: 09/10/2017] [Indexed: 12/16/2022] Open
Abstract
Acquired aplastic anemia (AA) is a type of bone marrow failure (BMF) syndrome characterized by partial or total bone marrow (BM) destruction resulting in peripheral blood (PB) pancytopenia, which is the reduction in the number of red blood cells (RBC) and white blood cells (WBC), as well as platelets (PLT). The first-line treatment option of AA is given by hematopoietic stem cell (HSCs) transplant and/or immunosuppressive (IS) drug administration. Some patients did not respond to the treatment and remain pancytopenic following IS drugs. The studies are in progress to test the efficacy of adoptive cellular therapies as mesenchymal stem cells (MSCs), which confer low immunogenicity and are reliable allogeneic transplants in refractory severe aplastic anemia (SAA) cases. Moreover, bone marrow stromal cells (BMSC) constitute an essential component of the hematopoietic niche, responsible for stimulating and enhancing the proliferation of HSCs by secreting regulatory molecules and cytokines, providing stimulus to natural BM microenvironment for hematopoiesis. This review summarizes scientific evidences of the hematopoiesis improvements after MSC transplant, observed in acquired AA/BMF animal models as well as in patients with acquired AA. Additionally, we discuss the direct and indirect contribution of MSCs to the pathogenesis of acquired AA.
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Pei XY, Zhao XY, Xu LP, Wang Y, Zhang XH, Chang YJ, Huang XJ. Immune reconstitution in patients with acquired severe aplastic anemia after haploidentical stem cell transplantation. Bone Marrow Transplant 2017; 52:1556-1562. [DOI: 10.1038/bmt.2017.174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 06/09/2017] [Accepted: 06/18/2017] [Indexed: 12/30/2022]
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Elbadry MI, Espinoza JL, Nakao S. Induced pluripotent stem cell technology: A window for studying the pathogenesis of acquired aplastic anemia and possible applications. Exp Hematol 2017; 49:9-18. [DOI: 10.1016/j.exphem.2016.12.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/09/2016] [Accepted: 12/25/2016] [Indexed: 01/08/2023]
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Gavriilaki E, Sakellari I, Anagnostopoulos A, Brodsky RA. Transplant-associated thrombotic microangiopathy: opening Pandora's box. Bone Marrow Transplant 2017; 52:1355-1360. [PMID: 28287636 DOI: 10.1038/bmt.2017.39] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 02/01/2017] [Accepted: 02/05/2017] [Indexed: 12/20/2022]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an early complication of hematopoietic cell transplantation (HCT). A high mortality rate is documented in patients who are refractory to calcineurin inhibitor cessation. Estimates of TA-TMA prevalence vary significantly and are higher in allogeneic compared with autologous HCT. Furthermore, our understanding of the pathophysiology that is strongly related to diagnosis and treatment options is limited. Recent evidence has linked TA-TMA with atypical hemolytic uremic syndrome, a disease of excessive activation of the alternative pathway of complement, opening the Pandora's box in treatment options. As conventional treatment management is highly inefficient, detection of complement activation may allow for early recognition of patients who will benefit from complement inhibition. Preliminary clinical results showing successful eculizumab administration in children and adults with TA-TMA need to be carefully evaluated. Therefore, realizing the unmet needs of better understanding TA-TMA in this complex setting, we aimed to summarize current knowledge focusing on (1) critical evaluation of diagnostic criteria, (2) epidemiology and prognosis, (3) recent evidence of complement activation and endothelial damage and (4) treatment options.
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Affiliation(s)
- E Gavriilaki
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece.,Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - I Sakellari
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - A Anagnostopoulos
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - R A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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31
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Espinoza JL, Kotecha R, Nakao S. Microbe-Induced Inflammatory Signals Triggering Acquired Bone Marrow Failure Syndromes. Front Immunol 2017; 8:186. [PMID: 28286502 PMCID: PMC5323400 DOI: 10.3389/fimmu.2017.00186] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 02/09/2017] [Indexed: 12/13/2022] Open
Abstract
Acquired bone marrow failure syndromes encompass a unique set of disorders characterized by a reduction in the effective production of mature cells by the bone marrow (BM). In the majority of cases, these syndromes are the result of the immune-mediated destruction of hematopoietic stem cells or their progenitors at various stages of differentiation. Microbial infection has also been associated with hematopoietic stem cell injury and may lead to associated transient or persistent BM failure, and recent evidence has highlighted the potential impact of commensal microbes and their metabolites on hematopoiesis. We summarize the interactions between microorganisms and the host immune system and emphasize how they may impact the development of acquired BM failure.
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Affiliation(s)
- J Luis Espinoza
- Department of Hematology and Oncology, Graduate School of Medical Science, Kanazawa University , Kanazawa, Ishikawa , Japan
| | - Ritesh Kotecha
- Department of Medicine, Beth Israel Deaconess Medical Center , Boston, MA , USA
| | - Shinji Nakao
- Department of Hematology and Oncology, Graduate School of Medical Science, Kanazawa University , Kanazawa, Ishikawa , Japan
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Gómez-Almaguer D, Vázquez-Mellado A, Navarro-Cabrera JR, Abello-Polo V, Milovic V, García J, Basquiera AL, Saba S, Balladares G, Vela-Ojeda J, Gómez S, Karduss-Aurueta A, Bustinza-Álvarez A, Requejo A, Feldman L, Jaime-Pérez JC, Yantorno S, Kusminsky G, Gutiérrez-Aguirre CH, Arbelbide J, Martinez-Rolon J, Jarchum G, Jaimovich G, Riera L, Pedraza-Mesa E, Villamizar-Gómez L, Herrera-Rojas MÁ, Gamboa-Alonso MM, Foncuberta C, Rodríguez-González G, García Ruiz-Esparza MA, Hernández-Maldonado E, Paz-Infanzón M, González-López E, Ruiz-Argüelles GJ. The Latin American experience of allografting patients with severe aplastic anaemia: real-world data on the impact of stem cell source and ATG administration in HLA-identical sibling transplants. Bone Marrow Transplant 2016; 52:41-46. [DOI: 10.1038/bmt.2016.212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 11/09/2022]
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Abstract
Eltrombopag (Promacta®) is an orally active thrombopoietin receptor agonist recently approved in the US for the treatment of patients with severe aplastic anaemia who have had an insufficient response to immunosuppressive therapy. This article reviews the efficacy and tolerability of eltrombopag in this indication and overviews its pharmacological properties. Eltrombopag does not compete with thrombopoietin and binds to a different site on the receptor, producing additive effects. It stimulates haematopoietic stem cells and promotes haematopoietic recovery in patients with aplastic bone marrow. Eltrombopag increased platelet counts and can also increase red blood cell and neutrophil counts. In patients with severe aplastic anaemia refractory to prior immunosuppressive therapy, oral eltrombopag at dosages ≤150 mg once daily for 12-16 weeks produced a haematological response in at least one cell lineage in 40 % of patients. Trilineage responses were achieved in nearly one-half of the responders during extended treatment. In robust responders, stable haematological counts were maintained after eltrombopag discontinuation. Eltrombopag was generally well tolerated, with increased liver transaminases as the only dose-limiting toxicity. Clonal cytogenetic abnormalities were observed in 19 % of patients and dysplasia in 5 % of patients.
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Zhu F, Qiao J, Zhong XM, Wu QY, Chen W, Yao Y, Niu MS, Fu CL, Zeng LY, Li ZY, Xu KL. Antithymocyte globulin combined with cyclosporine A down-regulates T helper 1 cells by modulating T cell immune response cDNA 7 in aplastic anemia. Med Oncol 2015; 32:197. [PMID: 26049920 DOI: 10.1007/s12032-015-0647-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 05/26/2015] [Indexed: 12/20/2022]
Abstract
Antithymocyte globulin (ATG) combined with cyclosporine A (CsA) has been widely used as a standard regimen in the treatment of aplastic anemia (AA), especially in severe aplastic anemia (SAA). Abnormally activated T cells might be the immune pathogenesis of AA. T cell immune response cDNA 7 (TIRC7) has been demonstrated its essential role in T cell activation; however, little is known about the role of TIRC7 in AA. In this study, we documented that TIRC7 levels in CsA group were higher than that in ATG + CsA (AC) group only in the follow-up phase (P < 0.05; P < 0.05); nevertheless, TIRC7 levels in SAA group were elevated than non severe aplastic anemia group not only in the treatment phase (P < 0.05; P < 0.05) but also in the follow-up phase (P < 0.05; P < 0.01). The trend of changes of T helper (Th) 1, Th17 and Th22 levels before and after treatment was similar to the changes of TIRC7 levels in either AC group or CsA group. Thus, TIRC7 might be involved in the pathogenesis of AA and AC might down-regulate Th1 cells by modulating the expression of TIRC7 in AA.
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Affiliation(s)
- Feng Zhu
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical College, No. 99 West Huaihai Road, Xuzhou, 221002, Jiangsu Province, China
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Hsu SN, Chen JH, Kao WY. Allogeneic hematopoietic stem cell transplantation as the first-line treatment option in a patient with severe aplastic anemia without a matched related donor: A case report. Oncol Lett 2014; 8:1831-1833. [PMID: 25202420 PMCID: PMC4156163 DOI: 10.3892/ol.2014.2341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 06/19/2014] [Indexed: 12/02/2022] Open
Abstract
The outcomes of matched unrelated donor (MUD) hematopoietic stem cell transplantation (HSCT) and immunosuppressive therapy (IST) in patients with severe aplastic anemia (SAA) remain controversial. The clinical outcome in patients that undergo transplantation following failed IST is typically poorer when compared with patients that initially underwent transplantation. Clinical treatment algorithms have been proposed to determine the management of such patients, and account for individual conditions, personal preferences and prognostic risk factors. The present study reports the promising outcome of a 22-year-old patient exhibiting SAA. The patient underwent peripheral blood stem cell transplantation (PBSCT) from an MUD using a fludarabine-based conditioning regimen and low-dose total body irradiation as an alternative method to first-line IST. The patient achieved rapid bone marrow reconstitution and has been in complete remission for 32 months. The aim of the fludarabine-based conditioning regimen with PBSCT was to improve the patient’s therapeutic outcome and provide a convenient treatment strategy. Furthermore, this regimen extends the application of HSCT to patients who are older or those that are without a matched related donor.
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Affiliation(s)
- Shun-Neng Hsu
- Division of Hematology-Oncology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, R.O.C
| | - Jia-Hong Chen
- Division of Hematology-Oncology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, R.O.C
| | - Woei-Yau Kao
- Division of Hematology-Oncology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan, R.O.C ; Division of Hematology-Oncology, Department of Medicine, Buddhist Tzu Chi General Hospital, Taipei 231, Taiwan, R.O.C
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DeZern AE, Symons HJ, Resar LS, Borowitz MJ, Armanios MY, Brodsky RA. Detection of paroxysmal nocturnal hemoglobinuria clones to exclude inherited bone marrow failure syndromes. Eur J Haematol 2014; 92:467-70. [PMID: 24612308 DOI: 10.1111/ejh.12299] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND Inherited bone marrow failure syndromes (IBMFS) and acquired aplastic anemia (AA) are life-threatening marrow failure disorders. These entities can be difficult to distinguish because they present similarly. Correct diagnosis is imperative for proper therapy. DESIGN AND METHODS This is a retrospective, single-center study of patients <40 yr of age, evaluated for bone marrow failure, and assayed for the presence of a PNH clone in the pediatric or adult hematology/oncology clinics from 2001 to present. Patients were also evaluated for IBMFS. RESULTS We present results from 156 patients with marrow failure, 20 of whom have IBMFS. None of the IBMSF patients had paroxysmal nocturnal hemoglobinuria (PNH) clones. CONCLUSIONS Although further studies are needed, our results suggest that the detection of a PNH clone can be a useful diagnostic tool to exclude the diagnosis of IBMFS and focus the work-up and treatment on an acquired form of marrow failure.
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Affiliation(s)
- Amy E DeZern
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; Division of Hematology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Minter LM. NOTCH signaling in immune-mediated bone marrow failure of aplastic anemia. Rare Dis 2013; 1:e26764. [PMID: 25003012 PMCID: PMC3932944 DOI: 10.4161/rdis.26764] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 10/03/2013] [Accepted: 10/09/2013] [Indexed: 02/06/2023] Open
Abstract
Severe aplastic anemia is a rare bone marrow failure disease with the majority of cases caused by aberrant immune destruction of blood progenitors. Although the Th1-mediated pathology of aplastic anemia is well-described, the molecular mechanisms that drive disease progression remain ill-defined. The NOTCH signaling pathway mediates Th1 differentiation in the presence of polarizing cytokines, an action requiring enzymatic processing of NOTCH receptors by γ- secretase. We used a mouse model of aplastic anemia to demonstrate that expression both of intracellular NOTCH1 (NOTCH1(IC)) and T-BET, a key transcription factor regulating Th1 differentiation, were increased in T cells in the spleen and bone marrow during active disease. Conditionally deleting NOTCH1 or administering γ-secretase inhibitors (GSI) in vivo, attenuated disease and rescued mice from lethal bone marrow failure. In peripheral T cells from patients with untreated aplastic anemia, NOTCH1(IC) was significantly elevated and was detected at the TBX21 promoter, showing NOTCH1 directly regulates the gene encoding T-BET. Treating patients' cells ex vivo with GSI lowered NOTCH1(IC) levels, decreased the level of NOTCH1 detectable at the TBX21 promoter, and also decreased T-BET expression, indicating NOTCH1 signaling is responsive to GSI during active disease. Collectively, these results identify NOTCH1 signaling as a primary driver of Th1-mediated pathogenesis in aplastic anemia and may represent a novel target for therapeutic intervention.
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Affiliation(s)
- Lisa M Minter
- Department of Veterinary and Animal Sciences; University of Massachusetts Amherst; Amherst, MA USA
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Roderick JE, Gonzalez-Perez G, Kuksin CA, Dongre A, Roberts ER, Srinivasan J, Andrzejewski C, Fauq AH, Golde TE, Miele L, Minter LM. Therapeutic targeting of NOTCH signaling ameliorates immune-mediated bone marrow failure of aplastic anemia. ACTA ACUST UNITED AC 2013; 210:1311-29. [PMID: 23733784 PMCID: PMC3698520 DOI: 10.1084/jem.20112615] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Notch1 signaling sustains the proinflammatory behavior of Th1 cells, implicated in the development of aplastic anemia in humans and mice. Severe aplastic anemia (AA) is a bone marrow (BM) failure (BMF) disease frequently caused by aberrant immune destruction of blood progenitors. Although a Th1-mediated pathology is well described for AA, molecular mechanisms driving disease progression remain ill defined. The NOTCH signaling pathway mediates Th1 cell differentiation in the presence of polarizing cytokines, an action requiring enzymatic processing of NOTCH receptors by γ-secretase. Using a mouse model of AA, we demonstrate that expression of both intracellular NOTCH1IC and T-BET, a key transcription factor regulating Th1 cell differentiation, was increased in spleen and BM-infiltrating T cells during active disease. Conditionally deleting Notch1 or administering γ-secretase inhibitors (GSIs) in vivo attenuated disease and rescued mice from lethal BMF. In peripheral T cells from patients with untreated AA, NOTCH1IC was significantly elevated and bound to the TBX21 promoter, showing NOTCH1 directly regulates the gene encoding T-BET. Treating patient cells with GSIs in vitro lowered NOTCH1IC levels, decreased NOTCH1 detectable at the TBX21 promoter, and decreased T-BET expression, indicating that NOTCH1 signaling is responsive to GSIs during active disease. Collectively, these results identify NOTCH signaling as a primary driver of Th1-mediated pathogenesis in AA and may represent a novel target for therapeutic intervention.
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Affiliation(s)
- Justine E Roderick
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, MA 01003, USA
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