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Journal of Chinese Integrative Medicine: 2011; 9(3): 306-312
DOI: 10.3736/jcim20110312
Effects of Chinese herbal medicine Guanxinkang on lipid metabolism and serum C-reactive protein, amyloid A protein, and fibrinogen in apolipoprotein E-knockout mice with atherosclerosis
1. Mei-jiao Mao (Science and Technology Agency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China )
2. Jun-ping Hu (Science and Technology Agency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China )
3. Fu-rong Chen (Science and Technology Agency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China )
4. Yi-yi Zhang (Science and Technology Agency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China )
5. Ping Liu (Science and Technology Agency, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China E-mail: liuping23@sina.com)

Objective: To observe the effects of Guanxinkang (GXK) decoction, a compound traditional Chinese herbal medicine, on serum lipids and apolipoprotein A Ⅰ (ApoA Ⅰ), apolipoprotein B (ApoB), apolipoprotein E (ApoE), C-reactive protein (CRP), serum amyloid A protein (SAA) and fibrinogen (Fbg) concentrations of ApoE-knockout mice with atherosclerosis, and to explore the mechanism of GXK decoction in anti-atherosclerosis.
Methods: Seventy 6-week-old ApoE-knockout mice receiving a high-cholesterol diet were used to induce atherosclerosis and were randomly divided into 5 groups: untreated group, simvastatin group and low- (drug concentration is 0.864 g/mL), medium- (1.728 g/mL), and high-dose (3.456 g/mL) GXK groups. Another fourteen 6-week-old C57BL/6J mice were used as the normal control. Two 12-week-old mice were randomly selected from the normal control and the ApoE-knockout mice respectively to observe vulnerable plaque in the mouse’s aortic by hematoxylin-eosin staining. Blood was collected from venous plexus of eye socket after gavage of corresponding drugs once daily for 8 weeks continuously, and then the serum was separated. Triglyceride (TAG) and total cholesterol (TC) were measured by enzyme-coupled assay; low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were measured by selective precipitation method. Serum levels of ApoA Ⅰ and ApoB were determined by turbidimetry. Double-antibody sandwich enzyme-linked immunosorbent assay was used to detect ApoE, CRP, SAA and Fbg concentrations in serum.
Results: Compared with the normal control group, the levels of serum TC, TAG, LDL-C, ApoB, CRP, SAA and Fbg in the untreated group were increased (P<0.05), and the serum concentrations of HDL-C, ApoA  Ⅰ and ApoE in the untreated group were decreased (P<0.05). After treatment, GXK decoction and simvastatin improved the dyslipidemia by increasing the concentrations of ApoA Ⅰ and HDL-C and decreasing the concentrations of TC, TAG, LDL-C, ApoB, CRP, SAA and Fbg (P<0.05). The high-dose GXK decoction had the most marked effects on SAA and Fbg and the serum lipids compared with the low-dose and medium-dose GXK and simvastatin.
Conclusion: GXK decoction may not only provide an active effect on hyperlipidemia, but also down-regulate the levels of serum CRP, SAA and Fbg. GXK decoction exerts an anti-atherosclerosis effect in ApoE-knockout mice.

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Please cite this article as:
Mao MJ, Hu JP, Chen FR, Zhang YY, Liu P. Effects of Chinese herbal medicine Guanxinkang on lipid metabolism and serum C-reactive protein, amyloid A protein, and fibrinogen in apolipoprotein E-knockout mice with atherosclerosis. J Chin Integr Med / Zhong Xi Yi Jie He Xue Bao. 2011; 9(3): 306-312.
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