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Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

The document concludes that freeze-dried platelet-rich plasma shows promise for medical use but requires standardization and further research.

The 3D scaffold helped maintain hair cell traits and could improve hair loss treatments.

Acne is significantly influenced by genetics, and understanding its genetic basis could lead to better, targeted treatments.

Arachidonic acid helps hair grow by increasing growth factors and improving follicle health.

Injecting alpha-melanocyte-stimulating hormone in mice improved skin healing and reduced scarring.

Wnt/ß-catenin signaling is crucial for regulating skin stem cells and hair growth, with the right levels and timing needed for proper function.

Antiandrogens are effective for conditions like prostate cancer and skin issues, but more research is needed to confirm their benefits and minimize side effects.

3D-printed mesoporous scaffolds show promise for personalized drug delivery with controlled release.

The ITGB6 gene is important for tissue repair and hair growth, and mutations can lead to enamel defects and other health issues.

Different populations have distinct hair structures related to their ancestry.

Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.

Removing vitamin D and calcium receptors in mice skin cells slows down skin wound healing.

Nanomaterials in biomedicine can improve treatments but may have risks like toxicity, needing more safety research.

Thymosin β4 helps improve skin healing and reduce scarring.

Cell-based therapies show promise for treating Limbal Stem Cell Deficiency but need more research.

People with Lichen Planus, especially with mucosal involvement, are more likely to have Metabolic Syndrome, which increases their risk for heart disease and diabetes.

New resveratrol-related compounds show promise for treating various health issues but need more research for clinical use.

Certain human skin cells marked by CD44 and ALDH are rich in stem cells capable of long-term skin renewal.

Hair-thread Tourniquet Syndrome, where hair or thread tightly wraps around a body part, is not rare and requires early detection to prevent serious damage.

Skin cells can help create early hair-like structures in lab cultures.

Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.

There is no significant link between male pattern baldness and insulin resistance.

Sp6 promotes tooth development by reducing follistatin levels.

TAF4 is important for skin cell growth and helps prevent skin cancer in mice.

A gene deletion causes the "hairless" trait in Iffa Credo rats.

Fungal infections in lab animals can interfere with research.

The VEGF +405G allele may increase the risk of PCOS in South Indian women.

Minoxidil may cause heart changes; use caution and monitor patients with heart conditions.

Oleic acid nanovesicles improve minoxidil absorption in hair follicles for alopecia treatment.