BACKGROUND:Autologous stem celltransplantation to the heart is a research direction of heart failure treatment, but there are relatively few of studies about autologous bone marrow mesenchymal stem celltransplantation targeting the cardiac conduction system. OBJECTIVE:To evaluate the potential of rabbit bone marrow mesenchymal stem cells for treatment of heart block. METHODS:Rabbit bone marrow mesenchymal stem cells were induced by 5-azacytidine to differentiate into cardiomyocyte-like cells. After thoracotomy, the left atrium-left ventricular anterior wal was sutured in 14 New Zealand white rabbits (8 in the experimental group and 6 in the control group). One month after the surgery, in the experimental group, autologous bone marrow mesenchymal stem cells induced by 5-azacytidine for 4 weeks were labeled with 4',6-diamidino-2-phenylindole and then injected into the suture area when opening the thoracic again. In the control group, cells cultured in medium were used. One month after celltransplantation, the third thoracotomy was done to insert electrodes into the left atrium and left ventricular anterior wal , for cardiac electrophysiological detection. Whether atrioventricular pathway formed in the suture area was observed. RESULTS AND CONCLUSION:After cells were transplanted into the sutured area, two rabbits in the experimental group were discovered to form the atrioventricular pathway in the sutured area through cardiac electrophysiological examination. After transplantation, transplanted cells were visible on the heart frozen sections under fluorescence microscope in the left ventricle and sutured area, but there was no cellin the control group. In the experimental group, bone marrow mesenchymal stem cells expressed Cx43 and formed gap junction intercellular communication with cardiomyocytes, which was presented as formation of the atrioventricular pathway on cardiac electrophysiology examination. These findings indicate that bone marrow mesenchymal stem cells can be used to treat cardiac conduction system block diseases.

Objective To study the effect of dampness-eliminating and spleen-strengthening Prescription (ESP) on expression levels of adiponectin (APN) , tumor necrosis factor alpha (TNF-α) , and hepatic fat content in type 2 diabetes mellitus ( T2DM) patients complicated with non-alcoholic fatty liver disease ( NAFLD) . Methods One hundred and twenty T2DM patients complicated with NAFLD were randomized into ESP group and pioglitazone group, 60 cases in each group. Based on the fundamental treatment for decreasing glucose, ESP group and pioglitazone group were given oral use of ESP and pioglitazone respectively. Twenty-four weeks constituted one treatment course. Before and after treatment, we observed the hepatic fat content, serum concentrations of APN and TNF-α, blood glucose, blood lipid, and hepatic function with the virtual touch tissue quantification technique ( VTQ) , enzyme-linked immunosorbent assay ( ELISA) , biochemical analysator respeetively in the two groups. Results After treatment, the levels of fasting plasma glucose ( FPG) , 2-hour postprandial plasma glucose ( 2hPG) , glycosylated hemoglobin ( HbA1c) fasting insulin ( FINS) , total cholesterol ( TC) , triglyceride ( TG) , low density lipoprotein cholesterol ( LDL-C) and TNF-α, and hepatic acoustic radiation force impulse ( ARFI) scores in the two groups were significantly lower than those before treatment (P<0.05) . On the other hand, the serum levels of high density lipoprotein cholesterol (HDL-C) and APN in both groups were significantly higher than those before treatment ( P<0.05) . The difference values of FINS and NF-α before and after treatneat in ESP group were higher than those in pioglitazone group ( P<0.05) . Conclusion ESP can significantly ameliorate the metabolic disorders of glucose and lipid , protect the pancreatic function and reduce hepatic fat, which is possibly related with the increase of APN level and the de-crease TNF-αlevel.

Objective To observe the value of MRI in evaluation on the morphology and function of iliococcygeal muscles in fertile and nulliparous women.Methods Totally 50 healthy fertile women (fertile group,further divided into cesarean section subgroup and spontaneous delivery subgroup according to the mode of delivery) and 17 nulliparous healthy women (nulliparous group) underwent MR scanning in both natural and increased abdominal pressure state.Iliococcygeus thickness (ICT),coronal iliococcygeal angle (cICA) and sagittal iliococcygeal angle (sICA) of different states were measured and compared between the groups.Results In the natural state,the right and bilateral average sICA in the fertile group were larger than those in nulliparous group (both P＜0.05),while no statistical difference of ICT,right,left and bilateral average cICA and left sICA were found between two groups (all P＞0.05);the bilateral average sICA in spontaneous delivery subgroup was larger than that in cesarean section subgroup (P＜0.05).In increased abdominal pressure state,left,right sICA and bilateral average sICA in fertile group were larger than those in nulliparous group (all P＜0.05),while there was no statistical difference of ICT and cICA between two groups (all P＞0.05);no statistical difference of ICT,cICA nor sICA was found between spontaneous delivery subgroup and cesarean section subgroup (all P＞0.05).Conclusion MRI can accurately evaluate morphological and functional changes of iliococcygeal muscle in females.

Alkaloids ; Apoptosis ; HL-60 Cells ; Harringtonines ; Humans ; Quinolizines