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

Targeting the IL-23/IL-17 pathway effectively treats several inflammatory skin diseases.

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.

Dextran sulfate was found to be toxic and ineffective for treating HIV.

Memory regulatory T cells need IL-7, not IL-2, to stay in peripheral tissues.

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.

Masculine facial features may not reliably indicate heritable health, and more research is needed.

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.

The document concludes that specific cells are essential for hair growth and more research is needed to understand how to maintain their hair-inducing properties.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.

Gene therapy with the Math1 gene helped regenerate balance-related cells and improve balance in mice.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

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.

Substances from Chinese medicines show promise for immune support and disease prevention, but the way they are processed affects their effectiveness.

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

Male hormones like testosterone may make COVID-19 worse, and testing for sensitivity to these hormones could help predict how severe a patient's symptoms might be. Treatments that reduce these hormones are being explored.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

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

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

The AUTS2 gene is linked to neurological disorders and may affect human brain development and cognition.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

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

Children, especially teenagers, can get severe SARS-CoV infection with symptoms similar to adults, but they typically recover well with supportive care.

Women with PCOS are more than twice as likely to develop nonalcoholic fatty liver disease.

People with PCOS, especially if obese, often have NAFLD, linked to obesity, insulin resistance, and high androgen levels.

KGF and activin are crucial for skin healing and repair.