Objective:To explore the difference of lymphocyte subsets in peripheral blood(PB)between aplastic anemia(AA)and hypoplastic myelodysplastic syndrome(hypo-MDS)patients,meanwhile to compare the clinical parameters obtai...Objective:To explore the difference of lymphocyte subsets in peripheral blood(PB)between aplastic anemia(AA)and hypoplastic myelodysplastic syndrome(hypo-MDS)patients,meanwhile to compare the clinical parameters obtained from PB and bone marrow(BM).Methods:The lymphocyte subsets in hypo-MDS(n=25)and.AA(n=33)patients were investigated by flow cytometry.Meanwhile,the differences in PB cell counts,biochemical indicators,BM cell counts and abnormal chromosomes between the two groups were analyzed.Results:The percentage of CD8^(+)T cells in AA group was significantly higher than that in hypo-MDS group(P=0.001),while the percentage of CD4^(+)T cells and the CD4^(+)/CD8^(+)ratio in AA group were obviously lower than those in hypo-MDS group(P=0.015 and 0.001,respectively).Furthermore,the proportion of CD4^(+)and CD8^(+)activated T(TA)cells,and memory Tregs in AA group was distinctly lower than those in hypo-MDS group(P=0.043,0.015 and 0.024,respectively).Nevertheless,the percentage of CD8^(+)naive T(TN)cells in AA patients was remarkably higher(P=0.044).And hypo-MDS patients had declined lymphocyte counts(P=0.025),increased levels of total bilirubin(TBil),lactate dehydrogenase(LDH),vitamin B12 and proportion of BM blasts than AA patients(P=0.019,0.023,0.027 and.0.045,respectively).Conclusion:In this study it was confirmed that the percentages of CD4^(+)and CD8^(+)TA cells,memory Tregs and CD8^(+)TN cells were significantly different between AA and hypo-MDS patients,which provide an essential basis for the identification of these two diseases.展开更多
文摘Objective:To explore the difference of lymphocyte subsets in peripheral blood(PB)between aplastic anemia(AA)and hypoplastic myelodysplastic syndrome(hypo-MDS)patients,meanwhile to compare the clinical parameters obtained from PB and bone marrow(BM).Methods:The lymphocyte subsets in hypo-MDS(n=25)and.AA(n=33)patients were investigated by flow cytometry.Meanwhile,the differences in PB cell counts,biochemical indicators,BM cell counts and abnormal chromosomes between the two groups were analyzed.Results:The percentage of CD8^(+)T cells in AA group was significantly higher than that in hypo-MDS group(P=0.001),while the percentage of CD4^(+)T cells and the CD4^(+)/CD8^(+)ratio in AA group were obviously lower than those in hypo-MDS group(P=0.015 and 0.001,respectively).Furthermore,the proportion of CD4^(+)and CD8^(+)activated T(TA)cells,and memory Tregs in AA group was distinctly lower than those in hypo-MDS group(P=0.043,0.015 and 0.024,respectively).Nevertheless,the percentage of CD8^(+)naive T(TN)cells in AA patients was remarkably higher(P=0.044).And hypo-MDS patients had declined lymphocyte counts(P=0.025),increased levels of total bilirubin(TBil),lactate dehydrogenase(LDH),vitamin B12 and proportion of BM blasts than AA patients(P=0.019,0.023,0.027 and.0.045,respectively).Conclusion:In this study it was confirmed that the percentages of CD4^(+)and CD8^(+)TA cells,memory Tregs and CD8^(+)TN cells were significantly different between AA and hypo-MDS patients,which provide an essential basis for the identification of these two diseases.
文摘温抗体型自身免疫性溶血性贫血(warm autoimmune hemolytic anemia,wAIHA)是由自身抗体介导的自身免疫性疾病。随着对wAIHA免疫发病机制的深入理解,针对免疫系统不同靶点的药物研发取得了显著进展,为wAIHA患者的治疗提供了更多选择。以新型CD20单抗、Bruton酪氨酸激酶(Bruton tyrosine kinase,BTK)抑制剂、磷脂酰肌醇3激酶(phosphatidylinositol 3-kinases,PI3K)抑制剂和B淋巴细胞活化因子(B-cell activating factor of the TNF family,BAFF)抑制剂等为代表的抗B细胞靶向治疗,以及以蛋白酶体抑制剂和CD38单抗为代表的抗浆细胞靶向治疗均取得了显著成效。此外,补体抑制剂、新生儿Fc受体(neonatal Fc receptor,FcRn)单抗、脾酪氨酸激酶(spleen tyrosine kinase,SYK)抑制剂、哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)抑制剂等也取得了显著进展。本文对近年来wAIHA的免疫靶向治疗进展进行综述,以期为临床实践提供参考。
