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Chemotherapy can cause various skin reactions, with hair loss being the most common, and proper diagnosis and treatment of these reactions are important.

Zinc oxide nanoparticles in sunscreen do not penetrate deep into the skin.

New nanofiber technology improves wound healing by supporting cell growth and delivering treatments directly to the wound.

Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

Growing human skin cells in a 3D environment can stimulate new hair growth.

Teriflunomide helps reduce multiple sclerosis symptoms and is safe for most patients.

The immune system plays a key role in tissue repair, affecting both healing quality and regenerative ability.

Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.

The guidelines advise against using testosterone and DHEA in women for most conditions due to safety and effectiveness concerns, but suggest considering testosterone for postmenopausal women with low sexual desire.

Insulin resistance is a key factor in polycystic ovary syndrome, but genetics may also contribute.

Wnt1/βcatenin signaling is crucial for heart repair after injury.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Melanocyte stem cells in hair follicles are key for hair color and could help treat greying and pigment disorders.

A protein from certain immune cells is key for new hair growth after skin injury in mice.

Creating stronger blockers for skin enzymes might lead to better treatment for conditions like acne and excessive hair growth.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

PCOS is caused by both genetics and environmental factors like diet and obesity.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

The conclusion is that proper signaling is crucial for hair growth and development, and errors can lead to cancer or hair loss.

Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.

Insulin resistance and obesity are key factors in the development and worsening of polycystic ovary syndrome, and lifestyle changes are important for managing it.

Biomaterials with MSC-derived substances could improve tissue repair and have advantages over direct cell therapy.

Melatonin may help with sleep issues, depression, and cancer, but more research is needed.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

PrEP for HIV is less effective in transgender women mainly due to low adherence to the treatment.