Résumé
Objective To investigate the effect of Shensong Yangxin capsule on cardiac remodelling of myocardial infarction mouse model and the possible molecular mechanisms. Methods Adult male C57BL/6J mice were divided into sham operation group(n=10), model control group(n=20)and Shensong Yangxin group(n=20)according to random number table. Left anterior descending branch of coronary artery was ligated to establish myocardic infarction model in the model control group and Shensong Yangxin group. From the 2nd day after the surgery, Shensong Yangxin ( 400 mg . kg-1 ) was intragastrically administered, and the death rate of the mice was observed.Four weeks after the surgery, echocardiography was used to measure the cardiac function;myocardiac infarction area was detected by pathological staining;the expression levels of cardiac remodelling markers and extracellular matrix proteins were detected by RT-PCR. The possible molecular mechanisms were screened by Western blotting. Results As compared with the model control group, Shensong Yangxin significantly reduced the mortality after myocardial infarction in mice(P<0.05), as well as the myocardial infarct size(P<0.05).The mRNA expression levels of cardiac remodelling markers ANP, BNP, and β-MHC and the extracellular matrix proteins(collagenⅠ, collagen Ⅲ, CTGF, TGFβ) decreased significantly in the Shensong Yangxin group as compared with the model control group. Western blotting showed that Shensong Yangxin significantly decreased activation of smad3, and reduced expression level of smad4. Conclusion Shensong Yangxin attenuates cardiac remodelling after myocardial infarction and the mechanism may be related with blockage of smad signaling pathway.
Résumé
Objective:To explore expression of plasma omentin -1 in patients with central obesity (CO) complicated essential hypertension (EH) and its clinical significance .Methods : Serum level of omentin - 1 was measured by enzyme linked immunosorbent assay in 57 CO patients without EH (pure CO group) and 67 CO complicated EH patients (CO + EH group) ,and 56 healthy subjects (normal control group) .Blood glucose ,blood lipid and biochemical indexes were compared and analyzed among three groups ,and Logistic multi - factor gradual regression analysis was used to perform risk factor analysis .Results : Serum omentin - 1 level in CO + EH group was significantly lower than those of pure CO group and normal control group [ (25.15 ± 3.95) ng/ml vs .(45.63 ± 9.66) ng/ml ,(53.12 ± 7.97) ng/ml , P 0.05 ;Logistic multi - factor gradual regression analysis indicated that age and homeostasis model - insulin resistance index (HOMA - IR ) were independent risk factors affecting EH occurrence in obese people (OR = 1.124 ,95% CI : 1.000 - 1.248 ,P = 0.049 ;OR = 3.446 ,95% CI : 1.087 - 5.607 ,P = 0.001) ,while serum omentin - 1 level was an independent protective factor (OR = 0.423 ,95% CI : 0.210 - 0.636 , P = 0.001) .Conclusion : Serum omentin - 1 level may possess certain guiding significance in early diagnosis ,prevention and treatment for patients with central obesity complicated essential hypertension .
Résumé
The combination of lecturing and Problem-based Learning(PBL)teaching method is adopted in medical genetis. It is conducive to the development of self-directed learning skills, team skills,and problem-solving skills.