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GlossaryHypothalamic-Pituitary-Adrenal Axis

regulates stress response through hormone release from brain and adrenal glands

The Hypothalamic-Pituitary-Adrenal (HPA) Axis is a complex network involving the hypothalamus, pituitary gland, and adrenal glands, which work together to regulate the body's response to stress. When you encounter stress, the hypothalamus releases corticotropin-releasing hormone (CRH), prompting the pituitary gland to secrete adrenocorticotropic hormone (ACTH), which in turn stimulates the adrenal glands to produce cortisol, a key stress hormone. This system plays a crucial role in maintaining homeostasis and can impact various bodily functions, including immune response and metabolism.

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Research

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research Sex differences in the hypothalamic–pituitary–adrenal axis’ response to stress: an important role for gonadal hormones

197 citations , January 2019 in “Neuropsychopharmacology”

Male and female bodies respond differently to stress, influenced by hormones and development stages, with implications for stress-related diseases.

research The local hypothalamic–pituitary–adrenal axis in cultured human dermal papilla cells

9 citations , June 2020 in “BMC Molecular and Cell Biology”

Stress hormone CRF can cause hair loss by affecting hair growth cells and hormones.

research The human hair follicle has established a fully functional peripheral equivalent of the hypothamalic‐pituitary‐adrenal‐axis (HPA)

9 citations , January 2005 in “Experimental Dermatology”

Human hair follicles can produce stress hormones like the body's main stress response system.

research Qiviut cortisol reflects hypothalamic–pituitary–adrenal axis activity in muskoxen (Ovibos moschatus)

7 citations , May 2021 in “General and comparative endocrinology”

Muskoxen's qiviut cortisol levels indicate their stress hormone activity over the hair growth period.

research Involvement of the central hypothalamic-pituitary-adrenal axis in hair growth and melanogenesis among different mouse strains

6 citations , October 2018 in “PLoS ONE”

Stress can slow hair growth and affect skin color by impacting the body's stress response system.

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community EMA is re-examining Winlevi (clascoterone at lower concentration)

in Treatment 8 upvotes 1 year ago

Clascoterone in Winlevi, a topical AR antagonist, is being re-examined due to concerns about HPA axis suppression in adolescents, but it's unlikely to be banned for adult use in androgenetic alopecia (AGA). The European Medicines Agency recommended refusing Winlevi for acne vulgaris, but this may not affect Breezula's approval for AGA.

community CB-03-01 / Breezula Personal Results

in Treatment 17 upvotes 5 months ago

The user shared their experience with CB-03-01 (Breezula/Clascoterone) for hair loss, noting reduced shedding and improved hair appearance but experiencing significant sleep disturbances and low energy due to HPA axis suppression. They decided to stop using it due to these side effects and are waiting for GT20029 as an alternative.

community There’s actually a quite good chance that next year, we might see a new treatment get FDA approval for the first time in nearly three decades.

in Research/Science 79 upvotes 1 year ago

Breezula, a potential new hair loss treatment, may receive FDA approval soon, but it is expected to be a weaker alternative to finasteride and minoxidil. Concerns include its twice-daily application and possible side effects like HPA axis suppression.

community Mechanism of action of alfatradiol (17 alpha estradiol)

in Research/Science 5 upvotes 2 years ago

The conversation discusses the mechanism of action of alfatradiol (17 alpha estradiol) in treating hair loss. It explores theories that it either inhibits 5 alpha reductase to prevent T->DHT conversion or aromatizes scalp T into 17-alpha-estradiol to save hair.

community Anyone remember Breezula, the promising hairloss drug that was perpetually 3 years away? Well, it's available right now as an acme treatment. Can we just directly apply to the scalp?

in Treatment 41 upvotes 5 years ago

The conversation discusses the availability of Breezula, a drug for hair loss, now being sold as an acne treatment, and whether it can be applied to the scalp. Users express skepticism about new hair loss treatments and suggest waiting for FDA approval.

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