objective: adhesion of lactobacillus acidophilus (l. acidophilus) to dental porcelain surface may lead to gingival inflammation and secondary caries. surface roughness is among the factors affecting this adhesion. the purpose of this study was to evaluate the effects of four different surface treatment methods on adhesion of l. acidophilus to dental porcelain.   methods: sixty specimens (3x10mm...

Lactobacilli are known to use plant materials as a food source. Many such materials are rich in rhamnose-containing polyphenols, and thus it can be anticipated that lactobacilli will contain rhamnosidases. Therefore, genome sequences of food-grade lactobacilli were screened for putative rhamnosidases. In the genome of Lactobacillus plantarum, two putative rhamnosidase genes (ram1(Lp) and ram2(L...

BACKGROUND The colonic epithelium maintains a life long reciprocally beneficial interaction with the colonic microbiota. Disruption is associated with mucosal injury. AIMS We hypothesised that probiotics may limit epithelial damage induced by enteroinvasive pathogens, and promote restitution. METHODS Human intestinal epithelial cell lines (HT29/cl.19A and Caco-2) were exposed to enteroinvas...

Background: Probiotics are living organisms that are beneficial for human health. Lactobacillus species has been considered as probiotic bacteria due to their adjustment of human immune responses and therapeutic effects in inflammatory disorders. The aim of the present study was to evaluate the effects of Lactobacillus probiotic strains on toll-like receptors (TLR2 and TLR4) expression in HT29 ...

Probiotics improve the intestinal microbiota and exert benefi ts for the host (Fuller, 1989; Parvez et al., 2006). Some strains of lactobacilli utilize lactose and alleviate lactose intolerance (Montalto et al., 2006). Lactobacillus gasseri is one of the predominant lactobacilli in the human intestine, and strains are used in probiotic foods. Lactobacillus gasseri is the major homofermentative ...

Background Bacterial vaginosis (BV) is a microbial imbalance (i.e., dysbiosis) that can produce serious medical effects in women at childbearing age. Little is known, however, about the incidence of BV or vaginal microbiota dysbiosis in pregnant teenagers in low and middle-income countries such as Ecuador. The scope of this exploratory analysis was to study the relationship between epidemiologi...