ABSTRACT
Objective:To measure serum levels of salusins and catestatin and analyze their correlation in patients with essential hypertension (EH) .Methods :A total of 90 EH patients were selected as hypertension group .According to blood pressure level ,they were further divided into hypertension stage 1 group (n=31) ,hypertension stage 2 group (n=30) and hypertension stage 3 group (n=29) .Another 40 normotensive subjects undergoing physical examina‐tion were selected as normal control group .Enzyme linked immunosorbent assay (ELISA) was used to measure ser‐um levels of salusins and catestatin , and the correlation between serum levels of salusins and catestatin was analyzed . Results :Compared with normal control group ,there were significant reductions in serum levels of salusins [ (3.01 ± 0.66) ng/ml vs .(1.44 ± 0.42) ng/ml ,(1.35 ± 0.89) ng/ml ,(1.41 ± 0.32) ng/ml] and catestatin [(132.24 ± 7.55) ng/ml vs .(89.22 ± 6.12) ng/ml vs .(82.51 ± 8.37) ng/ml ,(83.34 ± 4.47) ng/ml] in hypertension stage 1 ,stage 2 and stage 3 group , P0.05 all) .Pearson correlation analysis indicated that serum salusins level had no correlation with catestatin level ( r=0.363 , P>0.05) in normal control group ,while serum salusins level was significant positively correlated with catestatin level (r=0.723 ,P<0.01) in hypertension group .Conclusion:Serum levels of salusins and catestatin significantly reduce and they is positive correlation in patients with hyperten‐sion .Along with blood pressure level rises ,serum catestatin level reduces .
ABSTRACT
AIM: To investigate the regulatory effects of salusins on tensility of microvessle in rats. METHODS: Wistar rats were randomly distributed into six experimental groups as follows: (1) normal saline injection-treated control; (2) salusin ?; (3) salusin ?; (4) noradrenaline; (5) noradrenaline+salusin ?; and (6) noradrenaline+Salusin ?. For recording the microcirculation images in the mesentery, the intestinal loop was mounted on the stage of an intravital microscope equipped with a TV camera. Temporal changes in internal diameter of arterioles and venules were measured by computer using the Image-Pro software. RESULTS: Salusin ? (10 -5mol/L) dilated arterioles directly and the dilation up to the peak at 3 min [(25.56?4.30) vs (24.49?4.27)?m, P0.05). Salusin ? has no effects on internal diameter directly and NA-induced contraction of microvessles. CONCLUSION: Salusin ? dilated mesenteric arterioles and inhibited NA-induced contraction of microvessles in rats.