July 2011 in “Journal of Nursing UFPE on line” Many women in Natal, Brazil, have polycystic ovaries according to ultrasound scans.
12 citations
,
May 2019 in “Stem cell reviews” Fetal-maternal stem cells in a mother's hair can help with tissue repair and regeneration long after childbirth.
14 citations
,
January 2021 in “Stem cell research & therapy” Human skin cells with stem-like features can help create new hair follicles and sebaceous glands when combined with other cells.
15 citations
,
January 1999 in “Reproduction Fertility and Development” Merino sheep have fewer wool follicles at birth than before birth.
2 citations
,
January 2012 in “Zhongguo nongye Kexue” EGF helps secondary hair follicles grow in young gray goats.
Benign ovarian tumors can cause excess male hormones and related conditions in postmenopausal women.
135 citations
,
August 1994 in “Clinical Endocrinology” Most women with hirsutism or androgenic alopecia had polycystic ovaries, especially if they had irregular periods.
8 citations
,
September 2002 in “Genes to Cells” Killing specific cells in hair follicles can lead to hair growth problems in mice.
8 citations
,
October 2024 in “Developmental Cell”
Erythropoietin overexpression disrupts hair growth and fat formation in mice.
24 citations
,
December 1957 in “Experimental Cell Research” The glassy layer of hair follicles has different fibril sizes and arrangements in guinea pigs and young mice.
12 citations
,
June 2006 in “Anais Brasileiros de Dermatologia” The study found average numbers for different types of hair follicles in the scalp and observed differences between men and women, suggesting reasons for more common hair shedding in women.
26 citations
,
July 1993 in “Journal of Investigative Dermatology”
57 citations
,
February 2013 in “Journal of Dermatological Science” Improving the environment and cell interactions is key for creating human hair in the lab.
A stable sheep ovarian cell line was created for studying reproduction and hormones.
1 citations
,
March 2023 in “Journal of Ultrasound in Medicine” Ultrasound effectively distinguishes trichilemmal cysts from epidermoid cysts.
1 citations
,
April 2024 in “Journal of Cutaneous Pathology” Recurrent NICF is a rare skin condition with unclear causes, involving follicle inflammation and crystal deposits.
50 citations
,
May 2004 in “Journal der Deutschen Dermatologischen Gesellschaft” Estrogens generally inhibit hair growth and improve skin quality, but their exact effects on hair follicles are complex and not fully understood.
October 1995 in “Pediatric Research” January 1997 in “Han-guk hyeonmigyeong hakoeji/Applied microscopy” The hair follicle's connection to connective tissue is weaker than the skin's.
November 2022 in “Journal of Investigative Dermatology” EGFR is crucial for preventing hair follicle inflammation and hair loss.
November 2025 in “Journal of Investigative Dermatology” Estetrol may help prevent hair loss and support hair growth in women.
1010 citations
,
August 2000 in “Cell” Hair follicle stem cells can form both hair follicles and skin.
August 2023 in “Stem cell reviews and reports” July 2024 in “Journal of Investigative Dermatology” Human hair follicles have their own thyroid hormone system.
5 citations
,
March 2016 in “CRC Press eBooks” Hirsutism treatments can slow new hair growth, but existing hair needs removal, and eflornithine helps reduce hair growth.
Eyelid pilomatrixomas are rare, benign tumors that need accurate diagnosis for proper treatment.
December 1990 in “PubMed” Different glycoconjugates are present in the outer and inner root sheaths of human hair follicles.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers found a new way to isolate sweat glands from the scalp for study and culture.
3 citations
,
March 2013 in “American Journal of Dermatopathology” Ossification in trichilemmal cysts is more common than previously believed.