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[Vitamin K2]

M Shiraki

    Nihon Rinsho. Japanese Journal of Clinical Medicine
    |July 2, 1998
    PubMed
    Summary
    This summary is machine-generated.

    Vitamin K2 supplementation maintained lumbar bone mineral density and reduced vertebral fractures in osteoporotic patients over two years. However, treatment effectiveness varied, suggesting a need for predictive methods.

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    Area of Science:

    • Endocrinology and Metabolism
    • Bone Biology and Osteoporosis Research

    Context:

    • Osteoporosis is a significant public health concern characterized by low bone mineral density and increased fracture risk.
    • While Vitamin K2 (menaquinone) is known for its role in bone metabolism, its specific impact on vertebral bone mineral density (LBMD) and fracture prevention in osteoporosis remains under-researched.

    Purpose:

    • To investigate the efficacy of Vitamin K2 supplementation in maintaining LBMD and preventing vertebral fractures in osteoporotic patients over a two-year period.
    • To explore potential predictors of Vitamin K2 treatment response, including serum Glu-osteocalcin levels and ApoE4 phenotype.

    Summary:

    • A two-year randomized trial involving 167 osteoporotic patients demonstrated that Vitamin K2 supplementation maintained LBMD, whereas the control group experienced a 3% decrease.

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  • Vertebral fracture incidence was significantly lower in the Vitamin K2 group (0.098 events/year) compared to the control group (0.212 events/year).
  • Lowered Glu-osteocalcin levels in the Vitamin K2 group indicated enhanced osteocalcin carboxylation, but response varied, with some patients showing limited LBMD improvement, potentially due to insufficient Vitamin K2 tissue supply or ApoE4 phenotype.

    • Impact:

    • This study provides crucial evidence for Vitamin K2's role in preserving bone density and preventing fractures in osteoporosis.
    • Findings highlight the need for personalized treatment strategies and the development of biomarkers to predict Vitamin K2 responsiveness in osteoporosis management.