Buttermilk and Whey as Functional Foods to Ameliorate Clindamycin-Induced Changes in Mouse Intestine: Modulation of Intestinal Motility and Toll-like Receptors Expression

Antibiotic treatment is one of the main causes of intestinal dysbiosis, leading, in turn, to other intestinal alterations given the multiple relationships of the microbiota with gut health. Whey and buttermilk are two by-products from the dairy industry with numerous bioactive components. This study aimed to assess the potential of two formulas, containing a mixture of lactoferrin, milk fat globule membrane (MFGM), and whey or buttermilk, to reverse the negative effects of clindamycin on gut motility, Toll-like receptors (<i>TLRs</i>) expression, and oxidative stress in the intestine. For this purpose, a murine model of intestinal dysbiosis was established by clindamycin treatment. Male C57BL/6 mice were treated with saline (Control), clindamycin (Clin), a formula containing whey (F1), or buttermilk (F2) supplemented with lactoferrin and MFGM, Clin+F1, or Clin+F2. Clin delayed the whole gut transit, reduced the response to acetylcholine, decreased <i>TLR2</i> expression, and increased <i>TLR4</i> expression in the intestine. F1 and F2 formulas reversed the effects of Clin, restoring <i>TLR2</i> receptor levels and normalizing intestinal dysmotility. These results indicate that whey- and buttermilk-based formulas supplemented with lactoferrin and MFGM could be used as functional foods to prevent or treat motility disorders and restore some components of the immune system after antibiotic treatment.