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Cardiovascular protective effect of polysaccharide from Ophiopogon japonicus in diabetic rats
Junfeng Zhang1, Sairong Fan2, Yingge Mao1
1Institute of Glycobiological Engineering/School of Laboratory Medicine & Life Science, Wenzhou Medical University, Wenzhou 325035, China; Key Laboratory of Laboratory Medicine, Ministry of Education of China, School of Laboratory Medicine & Life Science, Wenzhou Medical University, Wenzhou 325035, China.
Abstract:
Ophiopogon japonicus (Thunb.) Ker-Gawl is a well known traditional Chinese medicine used to treat cardiovascular and chronic inflammatory diseases for thousands of years. The present study was set up to investigate the protective effects of O. japonicus polysaccharide (OJP1) on cardiovascular injuries in diabetic rats. Results showed that OJP1 significantly reduced the MDA concentration and increased the activities of GPx, CAT and SOD in heart of diabetic rats. The levels of AGE, hs-CRP, sICAM-1, NO and ET-1 in diabetic rats were significantly reversed by OJP1 treatment. In addition, the level of ET-1 mRNA was decreased significantly, whereas eNOS mRNA level was increased after administration of OJP1. Meanwhile, the histopathological analysis showed that OJP1 alleviates the heart injury in diabetic rats. Together, these results suggest that OJP1 maintains the antioxidant enzyme levels and improves cardiovascular performance in diabetic rats.
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