TLR7 and systemic lupus erythematosus: Zegarra-Ruiz et al. found that Lactobacillus in feces is enriched in a subset of SLE patients, and using Toll-like receptor 7- (TLR7-) dependent mouse models of SLE, Lactobacillus reuteri was shown to exacerbate autoimmune manifestations, which was inhibited by dietary resistant starch (RS) via SCFAs [62].