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Tributyltin exposure causes sex changes, sterilization, and decline in the snail Ocinebrina aciculata, risking its extinction.

Male pattern baldness involves genetics, hormones, and needs better treatments.

Humans lost body hair relatively recently in evolution.

Stem cell self-renewal is complex and needs more research for full understanding.

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

Cathepsin L is essential for normal hair growth and development.

Aging causes skin stem cells to work less effectively.

Too much androgen can cause hair loss; finasteride may help.

Androgens, like testosterone, are crucial for early testicular descent in rats.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

The enzyme 25 Hydroxyvitamin D 1 α-Hydroxylase is essential for healthy skin and recovery after skin damage.

Liposomes improve drug delivery and reduce skin irritation in dermatology.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

Some vitamins and minerals like vitamin D and iron can help with certain types of hair loss, but more research is needed for others.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

Different types of stem cells and their environments are key to skin repair and maintenance.

TGF-β signaling is crucial for stem cell maintenance, differentiation, and has implications for cancer treatment.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Normal skin cell renewal doesn't need RAR signaling, but vitamin A-related skin thickening does.

Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.

Oxidative stress contributes to hair graying and loss as we age.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

Cepharanthine is a well-tolerated drug with multiple medical uses, including anti-inflammatory and anti-cancer properties.

New targets for making and using brain-synthesized steroids could lead to better treatments for brain disorders and alcoholism.

Different PIN proteins affect plant root hair growth by changing how auxin is transported.