[Serum vitamin K concentration and nutrition]

Area of Science:

• Biochemistry
• Nutrition Science
• Bone Physiology

Context:

• Vitamin K (VK) is essential for synthesizing blood coagulation factors.
• VK also plays a vital role in bone metabolism through gamma-carboxylation of VK-dependent proteins.
• Severe VK deficiency is rare, but low dietary intake or status is linked to reduced bone mineral density and increased hip fracture risk.

Purpose:

• To review studies on the relationship between serum VK concentration and bone health.
• To examine the pharmacokinetics of VK analogues (phylloquinone and menaquinone).
• To identify factors affecting VK circulation relevant to bone health.

Summary:

• Low dietary Vitamin K intake or status is associated with decreased bone mineral density and higher hip fracture risk.
• Potential VK insufficiency in bone may exist even when VK status is sufficient for blood coagulation.
• The review covers VK pharmacokinetics and factors influencing its circulation in relation to bone health.

Impact:

• Highlights the importance of adequate Vitamin K for maintaining bone health beyond coagulation.
• Suggests that monitoring VK status may be beneficial for bone health assessment.
• Provides insights into VK pharmacokinetics and circulation for potential therapeutic interventions.