De Novo Gastric Acid Secretion Mediated by Dietary Acrylamide Induced Oxidative Stress in Stomach Tissue of Experimental Rats
Osah Martins Onwuka *
Applied and Environmental Physiology Unit, Physiology Department, University of Ibadan, Nigeria and Human Physiology Department, Gregory University, Uturu, Nigeria.
Constance Ihuoma Nkpurukwe
Human Physiology Department, Rivers State University, Port Harcourt, Nigeria.
Godson Chukwuemeka Ajuzie
Human Physiology Department, Gregory University, Uturu, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Background: Acrylamide input on gastric mucosa lesion is known but not fully elucidated. In this study the impact of dietary acrylamide on gastric acid secretion; an aggressive factor capable of causing erosion of the stomach tissue was evaluated to explain possible reason why acrylamide could induce gastric mucosa lesion. Thus, the study focuses on the impact of dietary acrylamide on gastric acid secretion and its association with mucosa lesion.
Materials and Methods: Fifteen (15) male Sprague-Dawley rats were grouped into three groups (n = 5). Group 1 (control) was fed with standard rat diet, Group 2 and 3 were fed with standard rat diet contaminated with acrylamide doses (7.5mg/kg and 15mg/kg respectively) reported to compromise gastric mucosa integrity. The experimental animals were allowed free access to their various feed and drinking water ad libitum for 4 weeks. Impact of the dietary acrylamide on gastric acid secretion, gastric acidity and stomach tissue oxidative stress biomarkers (lipid peroxidation (MDA), superoxide dismutase (SOD), Glutathione peroxidase (GPx), and Catalase, CAT) were determined.
Results: Average dietary consumption across the groups was 90.88% per week. Acrylamide contaminated diet significantly increased gastric acid secretion and gastric acidity in a dose dependent manner when compared to control, P<0.01. Dietary acrylamide also induced oxidative stress on stomach tissues by significantly increasing MDA as well as decreasing SOD, GPx, and CAT of the stomach in a dose dependent manner when compared to control, P<0.01.
Conclusion: Findings from the study suggests that oxidative stress induced on stomach tissue by dietary acrylamide could be as a result of the increase in gastric acid secretion and gastric acidity observed.
Keywords: Acrylamide, dietary acrylamide, gastric acid secretion, oxidative stress, stomach tissue
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References
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