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  • Title: Supportive Role of Probiotic Strains in Protecting Rats from Ovariectomy-Induced Cortical Bone Loss.
    Author: Montazeri-Najafabady N, Ghasemi Y, Dabbaghmanesh MH, Talezadeh P, Koohpeyma F, Gholami A.
    Journal: Probiotics Antimicrob Proteins; 2019 Dec; 11(4):1145-1154. PubMed ID: 30014348.
    Abstract:
    Osteoporosis is a major health problem that occurs as a result of an imbalance between bone formation and bone resorption. Different approaches have been established for treating osteoporosis. Recently, because of their health benefits and also low adverse reaction, probiotics have been receiving considerable attention. In this study, we compared the effectiveness of five probiotic strains, Lactobacillus acidophilus, Lactobacillus reuteri, Lactobacillus casei, Bifidobacterium longum, and Bacillus coagulans, in protecting rats from ovariectomized (OVX)-induced bone loss. Forty-nine adult female Sprague-Dawley rats were allocated into seven groups as follows: group 1, control; group 2, OVX; group 3, OVX + Lactobacillus acidophilus; group 4, OVX + Lactobacillus casei; group 5, OVX + Bacillus coagulans; group 6, OVX + Bifidobacterium longum; and group 7, OVX + Lactobacillus reuteri. Probiotics were fed to OVX groups at the concentration of (1 × 109 CFU/ml/day) for 4 weeks. Then, biochemical parameters, including vitamin D, calcium (Ca), phosphorus (P), and alkaline phosphatase (ALP), were assessed. Dual-energy X-ray absorptiometry (DEXA) scans were used that assess bone mineral density (BMD), bone marrow concentration (BMC), and area of global, femur, spine, and tibia. Lactobacillus acidophilus and Lactobacillus casei significantly increased Ca and ALP and decreased P in treated groups. Lactobacillus casei, Lactobacillus reuteri, and Bifidobacterium longum increased vitamin D significantly. Lactobacillus acidophilus and Lactobacillus casei indicated the most effects on BMD. In terms of BMC, and bone area, Lactobacillus acidophilus, Lactobacillus reuteri, and Lactobacillus casei demonstrated the significant enhancement in OVX groups treated with. Among the probiotics used in this study, Lactobacillus acidophilus and Lactobacillus casei showed the most effects in terms of BMD, BMC, bone area, and biochemical parameters. It seems that probiotics effects on bone health are strain dependent, but further studies should be done to prove these findings.
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