Thursday, September 22, 2022
HomeSports MedicineDietary sugar might disrupt intestine microbiota and induce metabolic issues

Dietary sugar might disrupt intestine microbiota and induce metabolic issues

A examine revealed within the journal Cell demonstrates that dietary sugar will increase the danger of metabolic syndrome by disrupting intestine microbiota and suppressing protecting T helper 17 (Th17) cells.

Examine: Microbiota imbalance induced by dietary sugar disrupts immune-mediated safety from metabolic syndrome. Picture Credit score: Alpha Tauri 3D Graphics/Shutterstock


Consumption of a high-fat food plan will increase the danger of diabetes, weight problems, heart problems, and metabolic syndrome. Though the causative hyperlink between a high-fat food plan and metabolic danger is just not fully recognized, it has been hypothesized that diet-induced intestinal irritation is usually a potential contributor.

The intestinal immune system is considered a significant regulator of metabolic homeostasis. CD4 T cells are main regulators of intestinal immune responses to dietary antigens. Research have recognized sure cell sorts that exhibit each selling and protecting results in metabolic syndrome. These cell sorts are Th17 cells and kind 3 innate lymphoid cells (ILC3).

The intestine microbiota performs an important position in regulating intestinal immune responses, together with Th17 cell and ILC3 responses. Excessive-fat diet-induced adjustments in intestine microbiota composition is understood to advertise metabolic syndrome by altering power metabolism and immune responses.

Within the present examine, scientists have decided the connection between microbiota-controlled intestinal immune responses and diet-induced weight problems and metabolic syndrome.

Influence of a high-fat food plan in metabolic syndrome

The comparability of immune responses induced by commonplace food plan and high-fat food plan in mice revealed that high-fat food plan induces the signs of metabolic syndrome, together with physique weight achieve, insulin resistance, and glucose intolerance.

Relating to intestinal immunity, high-fat food plan was discovered to considerably scale back the expression and performance of Th17 cells. The food plan additionally decreased the secretion of interleukin 17 (IL-17), a cytokine produced by Th17 cells.

Mechanistically, high-fat food plan triggered a speedy lack of commensal microbiota accountable for inducing Th17 cells. This subsequently led to vital depletion of Th17 cells earlier than the event of metabolic syndrome.

Additional experiments revealed that commensal microbiota-induced Th17 cells play an important position in guaranteeing microbiota-mediated safety towards high-fat diet-related weight problems and metabolic syndrome.

Influence of dietary sugar in metabolic syndrome

Three main dangerous parts of high-fat food plan embody extra fats, low dietary fiber, and excessive sugar content material. Of those parts, excessive degree of sugar was recognized as the primary causal issue of diet-induced weight problems and metabolic syndrome.

Mechanistically, dietary sugar promoted the expansion of Faecalibaculum rodentium in an ILC3-dependent method. The overgrowth of this Gram-positive bacterium displaced the commensal intestine microbiota, resulting in a depletion of intestinal commensal Th17 cells and subsequent diet-mediated induction of weight problems and metabolic syndrome in mice.

Nonetheless, the findings revealed that the elimination of dietary sugar is just not adequate to make sure safety. Restoration of Th17 expression and performance by immune therapies can be required to guard the mice towards diet-induced metabolic issues.

Th17 cell-mediated safety towards metabolic syndrome

Absorption of dietary lipid by intestinal epithelial cells is a recognized regulator of metabolic syndrome. Th17 cell-secreting cytokine IL-17 is understood to keep up intestinal barrier integrity by regulating epithelial cells.

The lipid content material measurement in numerous tissues of mice fed with a high-fat food plan revealed that within the presence of Th17 cells, intestinal epithelial cells take in a lesser quantity of dietary lipid. Mechanistically, Th-17 cell-secreted IL-17 suppressed the epithelial expression of fatty acid transporter CD36, resulting in decreased lipid uptake and absorption throughout the intestinal epithelium.  

Examine significance

The examine gives an interactome of dietary parts, intestine microbiota, and intestinal immune cells that regulate the pathophysiology of high-fat diet-induced metabolic issues, akin to weight problems, sort 2 diabetes, and metabolic syndrome.

The examine identifies dietary sugar as the foremost deleterious part of a high-fat food plan to extend the danger of metabolic issues. Based mostly on the findings, dietary modifications, along with immune interventions, are required to make sure full safety towards diet-induced metabolic issues.

As talked about by the scientists, the examine solely focuses on the early phases of metabolic adjustments induced by a high-fat food plan. Since diet-induced intestinal irritation doesn’t happen at early time factors, future research are required to decipher the long-term results and protecting mechanisms of Th17 cells in systemic illness.



Please enter your comment!
Please enter your name here

Most Popular

Recent Comments