<i>Sechium edule</i> var. <i>nigrum spinosum</i> (Chayote) Increases the mRNA Expression of Genes Encoding Sirtuins in Older Adults with Type 2 Diabetes Mellitus.

Consumption of <i>Sechium edule</i> var. <i>nigrum spinosum</i> has antioxidant and hypoglycemic effects. Regarding the former, certain signaling pathways that influence these effects have already been proposed; however, the underlying molecular mechanisms of the hypoglycemic effects remain unknown. It has been recognized that the sirtuin-mediated signaling cascade responds to various stressors, such as oxidative stress, and regulates glucose metabolism. Therefore, it would be of great interest to determine whether there is a link between these two properties and whether it is mediated by sirtuins. Hence, the present study aimed to evaluate the effect of <i>Sechium edule</i> on the gene expression of the sirtuin family (SIRT1-SIRT6) in individuals with type 2 diabetes mellitus (T2DM). A quasi-experimental study was conducted with a convenience sample of 26 older adults diagnosed with T2DM, divided into a (i) placebo group (PG; <i>n</i> = 14) and (ii) experimental group (EG; <i>n</i> = 12). Clinical, biochemical, and anthropometric measurements were performed, and total oxidant/antioxidant capacity (TOS/TAS) and mRNA expression of genes encoding sirtuins were determined. All parameters were measured at baseline, three months, and six months after the intervention. In the EG, the expression levels of SIRT1, SIRT3, SIRT5, and SIRT6 increased by 52%, 69%, 62%, and 69%, respectively, six months after treatment. A 50% decrease in TOS and a 44% increase in TAS were also observed. Our findings suggest that the bioactive components of <i>Sechium edule</i> enhance sirtuin expression and exhibit antioxidant effects in older adults with T2DM.