RESUMO
The scientific basis of acupuncture on mesenchymal stem cells (MSCs) for treating ischemic stroke (IS) is discussed. MSCs transplantation has great potential for the treatment of tissue damage caused by early stage inflammatory cascade reactions of IS, but its actual transformation is limited by various factors. How to improve the homing efficiency of MSCs is the primary issue to enhance its efficacy. As such, the possible mechanisms of acupuncture and MSCs transplantation in inhibiting inflammatory cascade reactions induced by IS are explored by reviewing literature, and a hypothesis that acupuncture could promote the secretion of stromal cell-derived factor-1α (SDF-1α) from ischemic foci to regulate SDF-1α/CXC chemokine receptor 4 (CXCR4) axis, thereby improving the homing efficiency of MSCs transplantation, exerting its neuroprotective function, and improving the bed transformation ability, is proposed.
Assuntos
Humanos , AVC Isquêmico , Quimiocina CXCL12 , Terapia por Acupuntura , Células-Tronco Mesenquimais , InflamaçãoRESUMO
OBJECTIVE@#To explore the expression of cellular apoptosis susceptibility protein （CAS） in acute myeloid leukemia （AML） and its correlation with clinical characteristics.@*METHODS@#The expression of CAS in bone marrow tissue of 54 patients with AML and 24 patients with non-hematological malignant diseases was detected by Western blot and immune-histochemical method, and compared between AML group and control group. Also the relationship of CAS expression in AML and sex, age, WBC count, Hb, platelet count, bone marrow blast cell ratio, ki-67 index, cytogenetic and molecular biological prognostic risk stratification, extramedullary infiltration and other clinical characteristics was analyzed.@*RESULTS@#Western blot showed that the expression of CAS protein in bone marrow biopsies of AML patients was significantly higher than that in control group (P<0.05). Immune-histochemical method revealed that CAS was mainly located in the cytoplasm in both AML group and control group. Among 54 AML patients, 14 patients (25.9%) showed high expression of CAS, while all the 24 patients in the control group showed low expression of CAS. The high expression rate of CAS in AML patients was significantly higher than that in the control group (P<0.05). There were statistically significant differences in prognostic risk stratification and the remission rate of the first chemotherapy between CAS high expression group and CAS low expression group in AML (P<0.05). The proportion of high risk patients and unremission patients after the first chemotherapy in CAS high expression group were significantly higher than those in CAS low expression group (57.1% vs 27.5%, 30.8% vs 7.9%), while the proportion of low risk patients and complete remission patients after the first chemotherapy were significantly lower than those in CAS low expression group (14.3% vs 37.5%, 53.8% vs 84.2%). In AML patients, the ki-67 index of bone marrow tissue in CAS high expression group was higher than that in CAS low expression group (60% vs 50%) (P<0.05).@*CONCLUSION@#CAS is localized in cytoplasm in both AML and non-hematological malignant diseases, and its expression increases in AML. CAS is related to the risk stratification of cytogenetics and molecular biology, the remission rate after the first chemotherapy and ki-67 index in AML, which suggests that CAS may be involved in the occurrence and development of AML.