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Estrogen increases blood vessel growth factor production, while testosterone blocks this increase.

Fulvestrant at 10 mg/kg does not promote hair regrowth in dogs with alopecia X.

Finasteride may cause kidney damage.

Hair growth is influenced by hormones and goes through different phases; androgens can both promote and inhibit hair growth depending on the body area.

Finasteride changes antioxidant enzyme expression, possibly affecting sperm protection in rats.

Bolandiol, a synthetic steroid, builds muscle and bone without greatly affecting sex glands, and works differently from other hormones.

Hormones during puberty increase certain receptors in the brain, and this change is influenced by estrogen levels.

Higher GPER-1 levels are linked to more severe and shorter-duration androgenetic alopecia, suggesting GPER-1 as a potential treatment target.

A brain-made hormone can protect against memory-related brain damage caused by harmful proteins.

Bisphenol-A (BPA) increases connections between brain cells and boosts their activity, but it blocks the effects of a male hormone on brain cell plasticity.

Male hormones may play a role in the development of heart disease, and more research is needed to understand their effects.

Most dogs with alopecia had higher than normal levels of certain hormones, but hair loss might not always be linked to these hormone changes.

Blocking interferon-gamma might help treat various autoimmune diseases.

Plants change their growth in response to shade based on light signals detected by phytochrome.

Estradiol stops hair growth in mice, but an antagonist can reverse this effect.

Topical estrogen treatments did not change hair growth in certain mouse strains, questioning previous findings on their role in hair growth control.

Estrogen receptors may not affect mouse hair growth as previously thought, and oxybenzone in sunscreen is stable in sunlight.

Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.

Epithelial-mesenchymal interactions control hair growth cycles through specific molecular signals.

Estrogen therapy can reduce skin aging but has cancer risks.

Estrogen Receptor ß (ERß) is the main hormone controller in human skin and hair follicles, not Estrogen Receptor α (ERα) or the Androgen Receptor (AR).

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

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

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

Lowering testosterone speeds up wound healing in male mice.

Fat cells are important for healthy skin, hair growth, and healing, and changes in these cells can affect skin conditions and aging.

Both mouse and rat models are effective for testing alopecia areata treatments.

Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.

Bioluminescence imaging can track hair follicle cells and help study hair regrowth.

Understanding hair biology is key to developing better treatments for hair and scalp issues.