Effects of hesperidin against lipid-oxidation and its effects on transcription of MCP-1 / 第三军医大学学报

ABSTRACT

Objective To evaluate the antioxidant effect of hesperidin and its effect on transcription of monocyte chemoattractant protein 1 (MCP 1) in rabbits with dietary atherosclerotic lesions. Methods (1) Low density lipoprotein (LDL) was isolated from healthy human plasma by sequential ultra centrifugation and oxidized by copper. The contents of malondialdehyde (MDA) were measured at different dosages of the drug and at different reaction time. (2) Atherosclerotic model of rabbits was established by feeding rabbits with high lipid diet and immune injury. A total of 18 rabbits were divided randomly into three groups control group, model group, and hesperidin group ( n =6 in each group). Rabbits in the control group were fed with common diet, those in the model group with high lipid diet, and those in the hesperidin group with high lipid diet plus hesperidin. After 10 experimental weeks, blood samples were collected from the marginal ear veins for the detection of the contents of MDA and nitric oxide (NO). The rabbits were sacrificed for the isolation of the thoracic aorta. MCP 1 mRNA transcription in the thoracic aorta was detected by RT PCR. Results Hesperidin could significantly inhibit MDA production in a dose dependent manner in vitro ( P