Allicin, a dietary trpa1 agonist, prevents high fat diet-induced dysregulation of gut hormones and associated complications
2021
Khare, Pragyanshu | Mahajan, Neha | Singh, Dhirendra Pratap | Kumar, Vibhu | Kumar, Vijay | Mangal, Priyanka | Boparai, Ravneet K. | Gesing, Adam | Bhadada, Sanjay K. | Sharma, Shyam S. | Kondepudi, Kanthikiran | Chopra, Kanwaljit | Bishnoi, Mahendra
Scope. Given the global epidemic of diabesity (co-existence of both diabetes and obesity), novel approaches that target gut hormone secretion and their modulation may offer the dual benefits of increased efficacy and limited side effects. In the present study, we tested the hypothesis that agonism of Transient Receptor Potential Ankyrin 1 (TRPA1), using a dietary activator, has a modulatory role in high fat diet (HFD)-induced dysregulation of post-prandial gut hormone responses and prevention of metabolic alterations. Methods and results. The effect of HFD on TRPA1 expression in different parts of the gut using immunohistochemistry, western blotting and RT-PCR was studied. Dietary TRPA1 agonist, Allicin Rich Garlic Juice (ARGJ), was co-administered along with HFD in mice for three months and various metabolic health parameters, relative gut hormone levels and inflammation were observed. The HFD caused substantial reduction in gut TRPA1 expression along with dysregulation in post-prandial normalization of gut hormone levels, particularly GLP-1, precipitating hunger phenotype, altered glucose homeostasis, hepatic inflammation and fat accumulation. TRPA1 agonism through ARGJ co-supplementation prevented HFD-induced dysregulation in post-prandial normalization of gut hormone levels and averted metabolic and inflammatory complications in peripheral tissues. Conclusion. Our findings provide evidence that ARGJ (diet-based TRPA1 agonism) can be employed as a feasible strategy, as nutraceuticals or food, to prevent HFD-induced metabolic complications.
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