Omayone TP, Salami AT, Olopade JO, Olaleye SB. Attenuation of ischemia-reperfusion-induced gastric ulcer by low-dose vanadium in male Wistar rats.
Life Sci 2020;
259:118272. [PMID:
32800836 DOI:
10.1016/j.lfs.2020.118272]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/02/2020] [Accepted: 08/10/2020] [Indexed: 12/15/2022]
Abstract
AIM
Vanadium, a trace element found in food and water sources has been previous reported to attenuate ulcer formation without much insight into its mechanism of action. This study highlights the mechanism by which vanadium exhibits its gastro-protective activity.
MAIN METHODS
Eighty male Wistar rats (80-100 g) were randomized into 8 equal groups. Groups 1 (control) and 2 (Ulcerated control) received water only, groups 3-8 received vanadium at 5, 10, 25, 50, 100 and 200 ppm respectively in their drinking water for ten weeks. Gastric ulcer was thereafter induced in groups (2-8) via ischaemia-reperfusion (IR) technique. The stomachs were excised for macroscopic examination, evaluation of mucous content, oxidative stress markers, hydrogen/potassium (H+/K+) and calcium (Ca++) ATPases activities plus expression of induced nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Vanadium at low doses inhibited IR induced gastric ulcer by 62.62% (10 ppm), 54.80% (25 ppm) and 43.50% (50 ppm).
KEY FINDINGS
Low dose vanadium increased mucous content, superoxide dismutase, catalase, glutathione activities and nitrite concentrations compared to ulcerated control group. The observed increase in malondialdehyde, Ca++ and H+/K+ ATPase activities, iNOS and COX-2 expression following IR were significantly reduced by pretreatment with vanadium.
SIGNIFICANCE
This study demonstrated that vanadium at low doses exhibit gastro-protective activities on IR induced gastric ulcer in rat model by inhibiting proton pump activities and decreasing expressions of iNOS and COX-2, thereby giving more insight into the protective action of vanadium.
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