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GlossaryVitamin D Receptor

protein that binds vitamin D to regulate gene expression

The Vitamin D Receptor (VDR) is a protein found in various cells throughout the body that binds to vitamin D, allowing it to regulate the expression of specific genes. This receptor plays a crucial role in maintaining calcium and phosphate balance, which is essential for healthy bone formation, and it also influences immune system function and hair follicle cycling.

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Research

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research Lentinula edodes (Shiitake) extract as a vitamin D receptor activator to enhance skin adaptogenic responses

August 2026 in “Scientific Reports”

This study explores the effects of an oil-soluble extract from Lentinula edodes (Shiitake), standardized for ergosterol content, on skin health. The extract, SMosE, was shown to enhance vitamin D receptor-dependent transcription in human keratinocytes and dermal fibroblasts, promoting wound repair and improving skin barrier function. Ex vivo experiments confirmed increased levels of cytokeratin 10 and claudin-1, indicating enhanced epidermal maturation. A clinical trial with 39 adults demonstrated that SMosE improved skin hydration, reduced transepidermal water loss, and regulated sebum levels after 28 days of use. These findings suggest that SMosE could be a promising ingredient for dermatological and cosmetic applications.

research Hairless Modulates Ligand-Dependent Activation of the Vitamin D Receptor-Retinoid X Receptor Heterodimer

28 citations , January 2012 in “Biological & pharmaceutical bulletin”

Hairless protein can both repress and activate vitamin D receptor functions, affecting gene regulation.

research Vitamin D activates type A natriuretic peptide receptor gene transcription in inner medullary collecting duct cells

17 citations , April 2007 in “Kidney international”

Vitamin D boosts a specific gene activity in kidney cells that could improve heart and kidney function.

Stress-Induced c-Jun-Dependent Vitamin D Receptor Activation Dissects the Non-Classical VDR Pathway from the Classical VDR Activity

research Stress-induced c-Jun-dependent Vitamin D Receptor (VDR) Activation Dissects the Non-classical VDR Pathway from the Classical VDR Activity

31 citations , January 2007 in “Journal of biological chemistry/The Journal of biological chemistry”

Stress activates a special function of the Vitamin D receptor with the help of c-Jun, which can also prevent cell death.

research The Vitamin D Receptor Is Required for Activation of cWnt and Hedgehog Signaling in Keratinocytes

56 citations , September 2014 in “Molecular Endocrinology”

Vitamin D receptor is essential for hair growth signaling.

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community My Theory Regarding a Cause and Cure for Androgenetic Alopecia

in Treatment 94 upvotes 6 years ago

Hair loss theory suggests imbalance between Vitamin D Receptor (VDR) and Androgen Receptor (AR) activation. Proposed treatment includes upregulating VDR, downregulating AR, and improving mitochondrial health.

community Sunlight: Does it Stimulate Hair Growth or Hair Loss?

in Research/Science 64 upvotes 2 years ago

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.

community Supplements for Health hair as for Gemini & Grok

in Chat 1 upvotes 7 months ago

The conversation discusses various supplements and vitamins like Vitamin D3, K2, Biotin, Iron, Zinc, and B Vitamins for improving hair health. It also mentions a combination of Tocotrienols, Pycnogenol, Saw Palmetto, Pumpkin Seed Oil, Stinging Nettle, and Myricetin for stabilizing hair, with Saw Palmetto, Pygeum, and Stinging Nettle noted for thickening hair despite side effects.

community DIY treatment... Shedding completely stopped after 1.5 yrs

in Treatment 252 upvotes 4 years ago

Vitamin C mixed with shampoo stopped shedding and promoted hair regrowth after 1.5 years. Both the person and their wife experienced significant hair loss reduction with this method.

community HLT Megathread on HMI-115 (key takeaways in comments)

in Research/Science 39 upvotes 3 years ago

HMI-115, a newly discovered hair loss treatment that could potentially be effective for those with diffuse thinning and telogen effluvium. It is based on prolactin receptor antagonist signaling and has already undergone Phase I trials in women, with potential commercialization by 2027.

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