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Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

Different people show different symptoms for genetic diseases because of how sensitive their bodies are to small changes in important factors.

New hair can grow from large wounds in mice, but less so as they age, involving reprogramming of skin cells and specific molecular pathways.

The document concludes that mouse models are crucial for studying hair biology and that all mutant mice may have hair growth abnormalities that require detailed analysis to identify.

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

The document concludes that mouse models are helpful but have limitations for skin wound healing research, and suggests using larger animals and genetically modified mice for better human application.

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

Male hormones, particularly DHT, are linked to male pattern hair loss, and treatments like finasteride can help, but they don't work for postmenopausal women's hair loss, which may have different causes.

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

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

Hair shedding is an active process that could be targeted to treat hair loss.

Plant cell culture is a promising method for creating sustainable and high-quality cosmetic ingredients.

Skin stem cells maintain and repair the outer layer of skin, with some types being essential for healing wounds.

Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.

Researchers created early-stage hair-like structures from skin cells, showing how these cells can self-organize, but more is needed for complete hair growth.

ILK is essential for proper hair follicle development and structure.

Nanocarriers could improve how drugs are delivered through the skin but require more research to overcome challenges and ensure safety.

White hair has less lipid content and absorbs water differently than brown hair.

Skin's epithelial stem cells are crucial for repair and maintenance, and understanding them could improve treatments for skin problems.

Human hair shows promise for non-invasive medical testing, but more research is needed to standardize its use.

Secretome-based therapies could improve hair growth better than current treatments.

Using radiation to make mice's hair turn gray helps study and find ways to prevent or reverse hair graying.

KIF18B is important for correctly positioning cell division machinery in skin cells, affecting hair follicle development.

The document concludes that finasteride can reduce nandrolone detection in doping tests, suggesting frequent testing and setting metabolite level thresholds for detection.

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

Understanding glycans and enzymes that alter them is key to controlling hair growth.

Melatonin receptors in hair follicles help regulate hair growth and could treat hair loss.

Skin stem cells are crucial for maintaining and repairing the skin and hair, using a complex mix of signals to do so.

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

Skin development in mammals is controlled by key proteins and signals from underlying cells, involving stem cells for maintenance and repair.