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Abstract Title:

Gastroprotective Effects of Astragaloside IV against Acute Gastric Lesion in Rats.

Abstract Source:

PLoS One. 2016 ;11(2):e0148146. Epub 2016 Feb 4. PMID: 26845156

Abstract Author(s):

Shuai Mao, Guang Yang, Winny Li, Jian Zhang, Hailong Liang, Jian Li, Minzhou Zhang

Article Affiliation:

Shuai Mao

Abstract:

BACKGROUND: Protection of the gastric mucosa from acute lesions induced by various irritants is a pertinent issue in the field of critical care medicine. In this study, we investigated the gastroprotective effects of astragaloside IV on acute gastric lesions in rats under stressful conditions.

METHODS: Rats were randomized into six groups. Group 1 and 2 received 10% Tween 80 (vehicle). Group 3 received 20 mg/kg of omeprazole, a proton pump inhibitor. Groups 4, 5 and 6 received astragaloside IV at concentration of 1, 10, and 50 mg/kg, respectively. As a means to induce gastric lesions, Groups 2-6 were subjected to water immersion and restraint stress for 12 hours after treatment.

RESULTS: Our present studies show that compared to rats in group 2, treatment with 1 to 50 mg/kg astragaloside IV significantly decreased the size of gastric lesions, MDA, TNFα and MCP1 levels, in addition to normalizing gastric pH, gastric mucus and SOD levels (P<0.05). Histomorphological examination confirmed that treatment with astragaloside IV elicited a dosage-dependent protective effect on the gastric mucosa. Furthermore, pretreatment with astragaloside IV resulted in significant elevations in HSP70 and reduction in Bax, along with over-expression of PLCγ response level, which was further confirmed via immunohistochemical analysis.

CONCLUSIONS: The acute gastric lesions induced are attenuated by pretreatment with astragaloside IV which is possibly due to the enhancing of the expression of HSP70 with concomitant antioxidant, anti-inflammatory and anti-apoptotic capacity.

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