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Bone-marrow and epidermal stem cells help heal wounds differently, with bone-marrow cells aiding in blood vessel formation and epidermal cells in hair growth.

Three drugs change mice's alcohol drinking patterns by affecting GABAA receptors.

Finasteride treatment changes brain steroid levels and receptors, affecting brain function even after stopping treatment.

Sex hormones affect brain injury differently in males and females.

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.

Meis1 is crucial for skin health and tumor development.

The spiny mouse is a unique menstruating rodent that can help us understand menstruation and reproductive disorders.

A drug improved schizophrenia-like symptoms in stressed rats by changing brain steroid levels.

Finasteride can cause sexual problems and depression in young men.

The nafarelin test can reliably distinguish between gonadotropin deficiency and delayed puberty in teenage boys.

Different sPLA2 enzymes affect immunity, skin and hair health, reproduction, and may be potential targets for therapy.

KLF4 is important for maintaining skin stem cells and helps heal wounds.

Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.

Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

Mesenchymal stromal cells may help treat severe COVID-19, but more research is needed to confirm their effectiveness.

The document suggests that blocking sweat glands with antiperspirants might allow skin-generated hormones to be absorbed, possibly increasing breast and prostate cancer risk.

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

Canine epidermal neural crest stem cells could be a promising treatment for spinal cord injuries in dogs.

The Notch signaling pathway helps in mouse hair development through a noncanonical mechanism that does not rely on RBPj or transcription.

COVID-19 and hypopituitarism (reduced pituitary gland function) are linked, with the latter's related health issues potentially worsening COVID-19 outcomes, and COVID-19 possibly increasing risk for pituitary complications.

Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.

Finasteride helps protect brain in old male rats.

Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.

Carvone helps treat skin issues by reducing melanin and stopping harmful cell growth.

Estazolam reduces anxiety-like behavior in PTSD by increasing allopregnanolone levels.

Eating collagen peptides may help with skin and hair growth.

Drugs for hormone-related conditions might help treat mental disorders but could have serious side effects.

Bioengineered salivary glands in mice can produce saliva when tasting sour or bitter, but have different protein levels and nerve signals compared to natural glands.

FP-1 is a key protein in rat hair growth, active only during the growth phase.

LEF1 is essential for the development of airway glands and is regulated by the Wnt/ß-catenin pathway.