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Review: The Role of Vitamin D and Lipoprotein Receptor-Related Protein in Amyloid Clearance and Brain Health

iStock-506155901A review on the relationship between vitamin D and low-density lipoprotein receptor-related protein (LRP-1) has revealed that the two may work together to possibly clear amyloid-beta (Aβ), whose deposition is considered linked to the progression of neurological dysfunction.

LRP-1 is a large receptor present on the body’s cells and is widely expressed, or present, in several tissues. It’s a member of the LDL receptor family, which plays various different roles related to enzyme activation, the entry of bacterial toxins and viruses into cells, and the metabolism of proteins that transport and combine with fats in the blood.

But LRP-1 has also been identified as a Aβ scavenger receptor that can remove Aβ from the brain through the blood-brain barrier. However, its expression is decreased in patients with neurological dysfunction.

This review points to recent evidence that after supplementation with the active form of vitamin D, 1,25-(OH)2D3, LRP1 expression increases significantly both in-vivo and in-vitro. This is because so many vitamin D receptors are expressed in the brain.

Several studies also suggest that vitamin D receptor (VDR, the receptor to which vitamin D binds to in the body) deficiency, or inhibition, could be a risk factor for neurodegenerative disease. This review establishes a strong connection between vitamin D, LRP-1, and their potential Aβ clearance abilities.

 

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