This study used a rat model to investigate the effects of chronic vitamin D3 supplementation on deficits induced by a vitamin D3-deficient diet (VDD).
BMC Nutrition · 5 authors, 2 centres
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This study used a rat model to investigate the effects of chronic vitamin D3 supplementation on deficits induced by a vitamin D3-deficient diet (VDD).
This study used a rat model to investigate the effects of chronic vitamin D3 supplementation on deficits induced by a vitamin D3-deficient diet (VDD). Rats on the VDD showed impaired spatial memory (reduced entries/time in novel Y-maze arm), decreased muscle grip strength, and altered pain scores. Vitamin D3 supplementation for 56 days significantly improved these behavioral outcomes. The supplementation also significantly increased vitamin D receptor (VDR) expression in liver and serum 25-OH vitamin D3 levels. Biomarker analysis showed supplementation reduced parathyroid hormone (PTH) by 32.5% and C-reactive protein (CRP) by 35.27%, while increasing calcitonin by 36.67%. In cerebrospinal fluid, levels of klotho and β-endorphin were elevated by 19.67% and 133.59%, respectively, compared to the VDD group. The findings suggest a potential role for vitamin D in managing deficiencies and associated cognitive or muscular impairments.