7 citations
,
November 2022 in “International Journal of Molecular Sciences” As Japanese males age, their hair darkens due to increased melanin, with males generally having darker hair than females.
18 citations
,
June 2009 in “Journal of Molecular Endocrinology” Finasteride exposure harms tadpole reproduction and hormone balance.
152 citations
,
December 2007 in “Gender Medicine” Male and female skin differ due to hormones, affecting conditions like hair loss, acne, and skin cancer, and suggesting a need for gender-specific treatments.
10 citations
,
November 2012 in “The journal of investigative dermatology/Journal of investigative dermatology” Korean and Caucasian men with male pattern baldness have different hair steroid levels.
January 2019 in “Global Dermatology” Genetic hair shaft abnormalities can be seen with microscopes and often affect scalp hair.
75 citations
,
October 1999 in “Differentiation” Mouse keratin 6 isoforms have different expression patterns in various tissues.
35 citations
,
April 2014 in “American Journal of Medical Genetics” Boys with less severe EDA mutations in XLHED have milder symptoms and better sweat and hair production.
October 1984 in “Kidney international” The patient had complex urinary tract issues and ambiguous genitalia, with physical features suggesting a hormonal imbalance.
2 citations
,
October 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” Lemur hair color and density vary by environment, supporting theories on primate hair evolution.
September 1997 in “Clinical and Experimental Dermatology” 17 citations
,
November 1967 in “American Journal of Anatomy” Hairless mice have longer hair follicles and abnormal structures during the catagen phase.
35 citations
,
April 2021 in “Current Biology” 27 citations
,
September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
1 citations
,
August 2019 in “Environmental Toxicology” Exposure to low doses of finasteride in the womb causes changes in the prostate of both male and female gerbils.
97 citations
,
March 2002 in “Molecular and cellular biology” Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.
Finasteride significantly reduced sperm production and caused testicular atrophy in hamsters.
11 citations
,
January 2005 in “Brazilian Journal of Medical and Biological Research” Hairless USP mice have enlarged skin cysts as they age.
52 citations
,
November 2003 in “Journal of Investigative Dermatology” Different harmful mutations in the CDH3 gene cause HJMD, but symptoms vary among individuals.
February 2026 in “Veterinary Dermatology” Coat-type differences in Pomeranians affect Alopecia X diagnosis and treatment.
47 citations
,
July 2005 in “European Journal of Cell Biology” Terrestrial vertebrates have balanced keratin gene clusters, unlike teleost fish.
29 citations
,
November 2022 in “Nature Medicine” Genetic variations greatly affect individual metabolism and can impact health and disease risk.
20 citations
,
March 1975 in “Journal of steroid biochemistry/Journal of Steroid Biochemistry” The study concludes that a genetic mutation in TFM mice leads to reduced androgen receptor activity, affecting the body's response to male hormones.
January 2004 in “Linchuang pifuke zazhi” Black hairs have more pigment-related genes, while gray hairs have more keratin-related genes.
Finasteride reduces DHT levels and affects gene expression in fish, similar to its effects in humans.
Dermoscopic features can help distinguish female androgenetic alopecia from telogen effluvium and healthy controls.
40 citations
,
February 1946 in “Canadian Journal of Research/Canadian journal of research” Hereditary factors cause hair loss in mice by affecting skin and hair follicle structure.
November 2021 in “Zenodo (CERN European Organization for Nuclear Research)” Understanding the 2D:4D digit ratio in vitiligo patients may help in clinical assessments.
September 2012 in “Annals of saudi medicine/Annals of Saudi medicine” The twins' condition is unique and doesn't match any known syndromes.
1 citations
,
September 2020 in “Journal of the Endocrine Society” Men have worse COVID-19 outcomes than women due to genetic and hormonal differences.
20 citations
,
September 2021 in “Nature communications” Cat color patterns are determined early in development by gene expression and epidermal changes, with the Dickkopf 4 gene playing a crucial role.