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Glossary Dermal Immune Cells

specialized skin cells that defend against infections and damage

Dermal immune cells are specialized cells located in the skin's dermis layer that play a crucial role in the body's immune response. They help protect against infections, heal wounds, and maintain skin health by identifying and responding to pathogens, damaged cells, and other harmful stimuli. These cells include various types such as macrophages, dendritic cells, and T cells, each with specific functions in immune surveillance and response.

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Research

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research Author response: Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage

November 2021

This study found that the loss of papillary fibroblasts in the skin due to UV radiation is mainly caused by an uncontrolled inflammatory response, with T cells helping fibroblast survival.

research Dermal T cell immunity and key regulatory signaling pathways: Implications in immune-mediated alopecia and hair regeneration

1 citations , January 2025 in “Genes & Diseases”

This review highlights that T cells are crucial in regulating hair follicle regeneration and their disruption can lead to alopecia, providing insights into hair disorders related to T cell immune balance and hair follicle regeneration.

research Decision letter: Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage

June 2021

This study found that chronic UVR exposure in mice and humans leads to a permanent loss of papillary fibroblasts in the upper dermis, which is associated with changes in the extracellular matrix.

The Effect of JAK Inhibitor on Survival, Anagen Re-Entry, and Hair Follicle Immune Privilege Restoration in Human Dermal Papilla Cells

research The Effect of JAK Inhibitor on the Survival, Anagen Re-Entry, and Hair Follicle Immune Privilege Restoration in Human Dermal Papilla Cells

16 citations , July 2020 in “International Journal of Molecular Sciences”

This study found that ruxolitinib modulated inflammatory changes and stimulated growth factor signals by blocking the JAK-STAT pathway in an in vitro model of alopecia areata.

research Editor's evaluation: Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage

June 2021

This study found that UV radiation-induced fibroblast depletion in the skin is primarily due to a deregulated inflammatory response, with T cells aiding fibroblast survival under stress.

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Community Join

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community PP405 Won’t Work: Follicle Is Miniaturized, Fibrosed, And Missing Key Support Cells

7 months ago

PP405 is ineffective for miniaturized, fibrosed hair follicles in androgenetic alopecia. AMP303 may activate hair follicle stem cells, but minoxidil and finasteride are still the main treatments.

community My Theory Of Androgenic Alopecia

16 upvotes 10 months ago

Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

community Another molecular pathway to promote scarless healing and regenerate hair follicles

14 upvotes 8 months ago

Carnosic acid in rosemary extract may enhance skin repair and promote hair follicle regeneration. It could be used alone or with verteporfin for scarless healing after dermal wounding.

community How is no one talking about this?

6 upvotes 1 year ago

Bovine colostrum is being discussed for its potential in hair regeneration, with some users noting that oral consumption may not be effective due to stomach acid destroying exosomes. The conversation also touches on ethical concerns about sourcing colostrum.

community Blocking dht should bring it back. So why does fin mostly just hold the line?

17 upvotes 3 months ago

Finasteride mainly prevents further hair loss by blocking DHT but doesn't reverse existing damage, while minoxidil can promote regrowth by waking dormant follicles. Ketoconazole helps with inflammation, but none of these treatments can reverse fibrosis or structural changes around hair follicles.

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learn Stem Cell Factor

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

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