Abstract
Postmenopausal osteoporosis results in low bone mineral density, interference in bone microarchitecture, decreased bone strength, and an increased risk of fragility fractures. This systematic review aimed to increase the level of evidence on supplementation with bacteria of the genus Bifidobacterium in induced osteoporosis in murines, rats, and ovariectomized female mice (OVX). The search was initially conducted using the PubMed, Embase, ScienceDirect, Scopus, Web of Science, and Scielo databases in 2024, using the keywords “osteoporosis”, “murine”, “ovariectomized”, “OVX”, and “Bifidobacterium”. In total, 89 full articles, abstracts, or book chapters were found and after detailed screening, 5 studies met the inclusion criteria, using 66 animals, randomly divided between control and treatment groups. The results demonstrated that oral supplementation with bacteria of the genus Bifidobacterium significantly improves parameters indicative of bone health BMD, BMC, BV/TV%, and Tb.Sp. In conclusion, this meta-analysis provides evidence that bacteria of the genus Bifidobacterium are involved in anti-osteoporotic mechanisms in female OVX rats and mice, as a preclinical model, and suggests the need for further studies in postmenopausal women as a therapeutic alternative or complementary therapy to conventional osteoporosis treatments.
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