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Objective To investigate the effects of obesity on blood pressure variation and plasma levels of nitric oxide (NO) and endothelin (ET) in elderly hypertensive patients.Methods A total of 175 elderly patients with hypertension were screened for this study.Based on body mass index,they were categorized into three groups with normal weight (n =69),overweight (n=56) and obesity (n=50).24 hour dynamic blood pressure,NO and ET levels were monitored.Results No significant differences in 24 h systolic blood pressure,daytime systolic blood pressure,nighttime systolic blood pressure,24 hours diastolic blood pressure (24 h-DBP) and night time diastolic blood pressure were found among the groups (all P＞0.05).Morning systolic and diastolic blood pressure were higher in obese group than in normal weight and overweight groups(both P＜0.05).The daytime diastolic blood pressure was higher in obese group than in overweight group.24 h systolic blood pressure variation,daytime systolic blood pressure variation,and blood pressure pattern were higher in obese group than in overweight and normal weight group [(12.6 ± 2.7)％ vs.(10.4 ±2.2)％ and (9.4±1.9)％,(12.2±2.9)％ vs.(10.2±2.2)％ and (9.2±2.1)％,(5.2±10.5)％vs.(1.4± 6.9) ％ and (1.8 ± 8.2) ％ group,all P＜ 0.05].The nighttime systolic blood pressure variation,24 h diastolic blood pressure variation,daytime diastolic blood pressure variation were increased in obese group as compared with normal weight group [(9.8 ± 3.7)％ vs.(8.2 ± 3.1)％,(15.3±3.3)％ vs.(13.2±4.2)％,(14.7±3.7)％ vs.(12.9±3.8)％,all P＜0.05].No differences were found in nighttime diastolic blood pressure variation among the groups.Plasma NO level was lower in obese group than in overweight and normal weight group [(29.8± 14.2)μmol/L vs.(47.9± 18.6) μmol/L and (94.6 ± 42.9) μmol/L,P＜0.01].Plasma ET level was significantly higher in obese group than in overweight group and normal weight group [(46.5± 9.8)ng/L vs.(37.3±4.8) ng/L and (31.1± 5.5) ng/L,P＜0.01].24 h systolic blood pressure variation was significantly correlated with plasma NO level (r =0.340,P =0.004) in normal weight group.Conclusions Obesity can effectively increase blood pressure variation and ET level,and reduce plasma NO level in elderly hypertensive patients.Obesity is one of the most important influencing factors for blood pressure variation,plasma NO and ET levels.
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AIM: The autologous bone marrow mesenchymal stem cell (BMSC) transplantation for treating acute myocardial infarction (AMI) via coronary artery in clinic has made remarkable and encouraging progress. The experiment aimed to study cytokine secretion in autologous BMSC transplantation for myocardial infarction dogs and its influence on angiogenesis and cardiomyocyte apoptosis. METHODS: Experiments were performed at the Animal Laboratory and the Central Laboratory, First Affiliated Hospital of Anhui Medical University between December 2005 and May 2007. 10 mL of bone marrow was sterilely aspirated from the posterosuperior iliac spine of 36 healthy mongrel dogs. BMSCs were isolated and purified by Percoll density gradient centrifugation and cultured in vitro by adherence method. After being co-cultured with 5-azacytidine for two passages, these cells were labeled by 5-bromodeoxyuridine (Brdu) for preparation. Dog models of AMI were established in a model control group and a cell transplantation group randomly. 2 mL of cell suspension of autologous BMSCs were implanted into four different regions in the acute myocardial site via topical injection in the cell transplantation group, while the same dose of DMEM was injected into the corresponding regions in the model control group. Myocardial infraction tissues were measured after transplantation. RESULTS: Flow cytometry demonstrated that the positive rate of CD34 and CD11b on third passage of BMSC cell surface was below 5%, while the positive rate of CD44 and CD105 was above 90%. In situ end labeling showed that apoptotic index of cardiomyocytes was lower in the cell transplantation group than in the model control group (P
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AIM:To construct hybrid nucleic acid vaccines which contain Plasmodium falciparum merozoite surface protein 1 (MSP1 ) block 1 7gene and gene fragment coding for several T cell epitopes. METHODS:MSP1 block 1 7gene of FUP strain was connected with a polyvalent gene fragment which contains several T cell epitopes from MSA1 ,MSA2 ,RESA,IL- 1 and Tetanus toxin,the connected gene fragment (hybrid gene,HG) was cloned into eukaryotic expression plasmid p CDNA3.1 (- ) ,VR1 0 1 2 for intracellular expression,VR1 0 1 2 /TPA for secretion,the recombinants were identified by PCR and restriction enzyme digestion. RE- SUL TS &CONCLUSION:The hybrid nucieic acid vaccines:VR1 0 1 2 /HG,VR1 0 1 2 /TPA/ HG and p CDNA3.1 /HG were successfully constructed.
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A group of glycoproteins with ⅥW 105- 130 K D from BHK-21 cell infected with Herpes Simplex Virus (HSV) were precipitated by six monoclonal antibodies (McAb). 1 A 12. Mad-2, 2D11, CM-D3, 2A8 and lC4,by using immunoprecipate technique. Im munoassays of BHK-21 cells infected with HSV-1/HSV-2 intertypic recom binants localized the genes encoding the target antigens of 1 A12, Mad-2, 2Dll, CM-D3, 2A8 and 1 C4 to the unique long region of HSV genesome at mapping unit 0.536—0.682 overlapping the gene encoding glycoprotein C(gC). De pending on reactivity with HSV- 1 and HSV-2 infected BHK-21 cells, Mad-2 shows HSV type-1 specificity, C M-D 3 shows HSV ty pe-2 specificity and the other four McAbs show type-common spe. cifity. So Mad-2 is against gC-1, CM D3 is against gC - 2 and 1 A12, 2 A8, 2 D11, 1 C4 are against type-common gC. We labelled the four McAbs directed at type-common gC with horseradise peroxidase (HRP)by the modified method of Nakane. ELISA blocking test was done to test the relationships of them. The result is that those four McAbs are against four distinct antigenic sites on type-common gC.