Effects of Shenshao Decoction on the inflammatory response in the aorta of a rat atherosclerotic
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• 347 •Chin J Integr Med 2013 May;19(5):347-352Shenshao Decoction (参芍汤) is a traditional herbal medicine composed of Radix Salviae Miltiorrhizae, Astragalus Membranaceus, Radix
Paeoniae Rubra, Radix Angelicae Sinensis, Rhizoma
Chuanxiong, Semen Persicae, Flos Carthami,
Pheretima Aspergillum, Hirudo, and Rhizoma Pinelliae. Shenshao Decoction was developed as an oral liquid a decade ago and has been registered with the State Food and Drug Administration of Hebei province (Z20050957, China). We have previously shown that Shenshao Decoction can effectively prevent and suppress left ventricular remodeling after acute myocardial infarction in rats.(1) We have also demonstrated that Shenshao Decoction has cardioprotective effects after acute ischemia-reperfusion in rats.(2,3) While similar results have also been observed in humans,(4) the underlying mechanisms remain unclear. The inflammatory response is a basic pathological mechanism that stimulates the formation of atherosclerotic plaque. While macrophages are known for their contribution to the inflammatory element of atherosclerosis, the role of the T lymphocyte is relatively understudied. The newly discovered interleukin (IL)-17A-producing T cell subset, known as the Th17 cell, plays a major role in chronic inflammatory and autoimmune diseases, such as rheumatoid arthritis, infl ammatory bowel disease, and multiple sclerosis. Th17 cells have also been shown to contribute to atherogenesis.(5) Recently, the Th17-
derived cytokine, IL-17A, was shown to be involved in the pro-infl ammatory response of vascular smooth muscle cells. The IL-23 and IL-17A axis is emerging as a critical regulatory system that bridges the innate and adaptive arms of the immune system. IL-1β plays a crucial role in early Th17 cell differentiation,(6) and
ORIGINAL ARTICLEEffects of Shenshao Decoction (参芍汤) on the Infl ammatory Response in the Aorta of A Rat Atherosclerotic Model
XUE Zhong-wen (薛忠文)1, SHANG Xiao-ming (尚小明)1, LV Song-hui (吕松桧)3, XU Hong (徐 洪)4, ZHANG Qi (张 琦)2, and WANG Chen (王 晨)2
©The Chinese Journal of Integrated Traditional and Western Medicine Press and Springer-Verlag Berlin Heidelberg 20131. Department of Internal Medicine, Hebei Medical University, Shijiazhuang, Hebei Province (050000), China; 2. Department of Cardiology, the Tangshan Worker's Hospital of Hebei Medical University, Tangshan, Hebei Province (063000), China; 3. Department of Obstetrics, Beijing Fangshan District Maternal and Child Health Hospital, Beijing (102488), China; 4. Medical Research Center, Hebei United University, Tangshan, Hebei Province (063000), ChinaCorrespondence to: Dr. SHANG Xiao-ming, Tel: 86-315-2814801, Fax: 86-315-3722242, E-mail: shangxiaoming0616@163.comDOI: 10.1007/s11655-013-1457-z
ABSTRACT Objective: To investigate the effect of Shenshao Decoction (参芍汤) on the infl ammatory status in the aorta in a rat model of atherosclerosis. Methods: Forty Sprague-Dawley rats were randomly divided into fi ve groups, 8 rats in each group: control untreated group, atherosclerosis group, atherosclerosis with Shenshao Decoction (low dose) group, atherosclerosis with Shenshao Decoction (high dose) group, atherosclerosis with simvastatin group. To stimulate atherosclerosis, the rats were fed vitamin D3 and a high-cholesterol diet. Four weeks later, treatments were maintained for eight weeks. Morphology changes were investigated by hematoxylin and eosin staining. Serum levels of total cholesterol (TC), triglycerides (TG), and low-density lipoprotein cholesterol (LDL-C) were obtained by enzymatic assays with use of an automated biochemical analyzer. The expression of malondialdehyde (MDA), glutathione peroxidase (GSH-PX) were detected by enzyme-linked immunosorbent assay. The expression levels of interleukin (IL)-1β, IL-17A, and IL-23 were detected by immunoblotting. Results: Shenshao Decoction treatment decreased TC, TG, LDL-C and MDA and increased GSH-PX levels (P<0.01). Compared with the control group, IL-1β, IL-17A, and IL-23 were lower in the high and low dose Shenshao Decoction groups and the simvastatin group (P<0.01). Conclusion: Shenshao Decoction could attenuate the progression of aortal atherosclerotic plaques by inhibiting the infl ammatory response in a rat atherosclerotic model.KEYWORDS Shenshao Decoction, atherosclerosis, malondialdehyde, glutathione peroxidase