Effect of puerarin on pulmonary arterioles wall collagen metabolism of chronic hypoxia hypercapnia rats |
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Authors: | GONG Yong-sheng LI Ji-wu YANG Peng-lin FAN Xiao-fang HU Liang-gang ZHENG Lü-zhen JIANG Zhong-sun |
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Institution: | Institute of Cor Pulmonale, Wenzhou Medical College, Wenzhou 325027, China |
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Abstract: | AIM:To investigate the effect of puerarin on pulmonary vessel collagen metabolism in pulmonary hypertension rats induced by chronic hypoxia and hypercapnia.METHODS:Collagen Ⅰ, Ⅲ and their mRNA were observed in pulmonary arterioles by the technique of immunohistochemistry and in situ hybridization.RESULTS:① Light microscopy showed media thickness of pulmonary arterioles was much higher in HH(hypoxic-hypercapnia) group than that of NC(normal control) group, and, vessel cavity turned more straiter in HH group than that of NC group.However, the damage of pulmonary arterioles in HP(hypoxic-pueratin) group was much slighter than that of HH group. ② The levels of plasma ET-1 and lung homogenates Hyr were much higher in HH group than those of NC group(P<0.01), and lower in HP group than HH groups(P<0.01).Plasma NO content in group HH was lower than that of group NC(P<0.01), it was higher in group HP than that of group HH(P<0.01).③Expression of collagen Ⅰ and collagen Ⅰ mRNA in pulmonary arterioles were significantly higher in HH groups than those of NC group (P<0.01), and they were lower in HP group than those of HH group (P<0.01).Expression of collagen Ⅲ and collagen Ⅲ mRNA showed no difference among three groups(P>0.05).CONCLUSION:Puerarin inhibited the deposition of collagen and improved pulmonary vessel remodeling. |
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Keywords: | Puerarin Hypoxia chronic Hypercapnia Hypertension pulmonary Collagen |
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