2 citations,
September 2002 in “Dermatologic Surgery” Each group of hair follicles on the scalp shares one muscle that helps control hair movement.
January 2024 in “Bratislavské lekárske listy/Bratislava medical journal” Chloroquine and cinchonine relax rat blood vessels by affecting calcium channels, with chloroquine needing caution in heart patients.
December 2023 in “International journal of molecular sciences” Chromosomal differences affect how muscle cells respond to testosterone.
Depressed individuals have higher hair sodium and potassium levels, similar to changes seen in astronauts.
November 2021 in “International journal of research - granthaalayah” The document suggests that human hair has electrical charges because of a gap in nerve cell coverage that affects electromagnetic radiation.
November 2017 in “Dermatologic Therapy” A new topical solution safely reduces hair shedding by 38% on average by tightening a muscle in the scalp.
March 2023 in “Archives of Physical Medicine and Rehabilitation” Testosterone and finasteride improve muscle strength and size after spinal cord injury.
April 2018 in “Journal of Investigative Dermatology” Arrector pili muscle regulates hair follicle stem cells, DNA methylation needed for hair cycling, and Wnt/B-catenin signaling starts hair growth.
47 citations,
November 1982 in “Journal of Cardiovascular Pharmacology” Nitrendipine and nifedipine effectively block muscle contractions, while papaverine relaxes them and minoxidil needs high amounts to work.
9 citations,
August 2013 in “Archives of Dermatological Research” A gene called BMAL1 plays a role in controlling hair growth.
5 citations,
August 2021 in “Journal of biological chemistry/The Journal of biological chemistry” Retinoic acid affects male and female muscle energy use and function differently.
53 citations,
October 2014 in “Free radical biology & medicine” Defective mitochondrial DNA replication causes aging symptoms and increased oxidative damage in mice.
43 citations,
April 2011 in “AJP Endocrinology and Metabolism” This study found that the Odc1 gene, which encodes ornithine decarboxylase (ODC), was directly regulated by the androgen receptor (AR) in skeletal muscle myoblasts and played a role in myoblast proliferation and differentiation. Odc1 expression was significantly reduced in muscle from male muscle-specific AR knockout mice, indicating its regulation by AR. In vitro experiments showed that Odc1 expression was higher in proliferating myoblasts compared to differentiated myotubes, and dihydrotestosterone increased Odc1 levels in myoblasts. Inhibition of ODC activity reduced myoblast numbers, while overexpression of Odc1 increased cell numbers and delayed differentiation, as evidenced by reduced expression of differentiation markers. The study concluded that androgens upregulated Odc1 via the AR, promoting myoblast proliferation and delaying differentiation.
29 citations,
March 2016 in “Cell cycle/Cell cycle (Georgetown, Tex. Online)” Isoproterenol helps hair follicle stem cells turn into beating heart muscle cells.
Hair can accurately predict iron levels in cattle muscle, helping diagnose mineral imbalances.
April 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Human hair follicles can be used to create heart muscle cells.
April 2017 in “Journal of dermatological science” Human hair follicles can produce stem cells that turn into heart muscle cells.
The EMG-to-force model accurately predicts hip muscle forces during walking.
January 2018 in “Urologe A” Botulinum neurotoxin injections into the pelvic muscles successfully prevented priapism relapse for over six months.
December 2022 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” 6 citations,
July 2016 in “Cell cycle/Cell cycle (Georgetown, Tex. Online)” Younger mice's hair-follicle stem cells are better at turning into heart cells than older mice's.
379 citations,
May 2016 in “Cochrane library” Corticosteroids, especially prednisone, improve short-term muscle strength in Duchenne muscular dystrophy but have manageable side effects.
306 citations,
August 2011 in “Journal of cachexia, sarcopenia and muscle” Enobosarm significantly increased muscle mass and improved physical function in elderly men and postmenopausal women without serious side effects.
124 citations,
March 2012 in “JAMA” Testosterone's muscle-building effects do not require its conversion to DHT.
92 citations,
November 2003 in “The Journals of Gerontology” Testosterone supplements can increase muscle mass and strength in older men with low levels, but long-term effects and risks need more research.
65 citations,
September 2010 in “Journal of the Neurological Sciences” Kennedy's disease leads to muscle weakness and sensory issues, has no cure but manageable symptoms, and future treatments look promising.
42 citations,
May 2007 in “Endocrinology and metabolism/American journal of physiology: endocrinology and metabolism” Testosterone can build muscle and bone without enlarging the prostate when a specific enzyme is blocked.
36 citations,
October 2009 in “Journal of biological chemistry/The Journal of biological chemistry” Two new compounds were found to build bone and muscle without affecting reproductive organs and skin oil glands.
15 citations,
August 2016 in “Current Urology Reports” Nandrolone and oxandrolone could help treat male health issues like muscle loss and low testosterone.
14 citations,
January 2020 in “Dermatology Online Journal” Some dietary supplements, like vitamins B6/B12, iodine, whey protein, and muscle-building products, can cause or worsen acne.