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Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

Using CDK inhibitors on rats showed a reduction in chemotherapy-caused hair loss, but later experiments could not repeat these results.

Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.

Hair follicles may soon be used more for targeted and systemic drug delivery.

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.

Stem cell therapy, particularly using certain types of cells, shows promise for treating hair loss by stimulating hair growth and development, but more extensive trials are needed to confirm these findings.

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

Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.

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

Men's sensitivity to male hormones might affect how severe COVID-19 gets for them.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

No single treatment is consistently effective for alopecia areata, and more research is needed.

Hibiscus plant extracts may have health benefits like lowering blood pressure and protecting the heart.

Modern lifestyles, including poor diet, stress, and long-term use of certain medications, hinder the body's ability to heal from inflammation, leading to chronic diseases.

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

Platelet-rich plasma may help with hair growth and skin quality but more research is needed to confirm its effectiveness.

Blocking the Wnt pathway could lead to new treatments for cancer and tissue repair but requires careful development to avoid side effects.

Correct skin biopsy techniques are crucial to avoid misdiagnosis of skin diseases.

Treating psoriasis on the scalp, nails, and skin folds is challenging, often requiring systemic treatments for severe cases, with some success in topical and biologic treatments.

Chemotherapy often causes temporary hair loss, which is distressing and needs better treatment and support.

The conclusion is that early diagnosis and a multi-system treatment approach are crucial for managing PCOS and its associated health risks.

Dutasteride 0.5 mg daily improves hair growth safely in men with hair loss.

Low-level laser therapy might help hair growth, but more research is needed.

The document concludes that understanding the genes and pathways involved in hair growth is crucial for developing treatments for hair diseases.

BMP2 and BMP7 have opposite roles in feather formation.

Gynecologists should provide comprehensive care for transgender patients, including mental health evaluation, hormone therapy, and surgical options, while monitoring for side effects and ensuring patient safety.

A certain smell receptor in hair follicles can affect hair growth when activated by a synthetic sandalwood scent.

Activin helps skin growth and healing mainly through stromal cells and affects keratinocytes based on its amount.