220 citations,
June 2013 in “The Journal of Pathology” The study on lichen planopilaris (LPP) involved 42 adult patients and demonstrated that the disease was characterized by the collapse of immune privilege in the hair follicle's epithelial stem cell niche, specifically in the bulge area. This collapse was marked by increased expression of MHC class I and II molecules and a reduction in TGFβ2 and CD200 expression, leading to a Th1-biased cytotoxic T cell response. The findings suggested that interferon-γ (IFNγ) played a significant role in this process, indicating that LPP might be an autoimmune disease. The study proposed that protecting or restoring immune privilege in the bulge could be a therapeutic strategy for managing this form of cicatricial alopecia.
21 citations,
November 2011 in “Veterinary Pathology” Mouse skin color ranges from pink to black, depending on their hair growth cycle.
5 citations,
October 2012 in “Veterinary Pathology” A Doberman Pinscher had a rare form of autoimmune disease causing hair loss and other severe symptoms.
April 2018 in “Veterinary Pathology” Tigers had a skin condition causing hair loss and inflammation, but the cause is unknown and treatment didn't work.
179 citations,
June 2000 in “The American journal of pathology” The absence of functional sebaceous glands causes hair follicle destruction and scarring alopecia.
122 citations,
April 1995 in “Journal of Cutaneous Pathology” The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.
94 citations,
August 1975 in “Journal of Cutaneous Pathology” Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.
69 citations,
February 2008 in “The American journal of pathology” Controlled delivery of specific RNA and IL-4 restored hair growth in mice with autoimmune alopecia.
67 citations,
August 2007 in “American Journal of Pathology” Overexpressing the mineralocorticoid receptor in mouse skin causes skin thinning, early skin barrier development, eye issues, and hair loss.
49 citations,
November 2021 in “Annual review of pathology” Lysophospholipids like LPA and S1P are important for hair growth, immune responses, and vascular development, and could be targeted for treating diseases.
34 citations,
February 2012 in “Journal of Cutaneous Pathology” The research found specific signs to diagnose alopecia areata incognito and noted patients generally regrow hair after steroid treatment.
29 citations,
July 2008 in “Journal of Cutaneous Pathology” Hair root sheaths are more common in non-scarring hair loss and help diagnose the type of hair loss.
27 citations,
October 1999 in “Experimental and Molecular Pathology” Stump-tailed macaque best for researching hair loss causes and treatments.
24 citations,
March 2011 in “The American journal of pathology” AIRE protein, defective in APECED patients, is found in skin and hair cells and interacts with cytokeratin 17.
20 citations,
August 2005 in “Journal of Cutaneous Pathology” The protein ARA70/ELE1 is involved in male pattern baldness, and lower levels of its short form may lead to hair thinning.
15 citations,
August 2006 in “Journal of Cutaneous Pathology” HIV-1 may cause increased stem cell death in hair follicles, leading to hair loss.
11 citations,
June 1985 in “Journal of cutaneous pathology” Examining many sections is key to correctly diagnosing hair follicle disorders.
9 citations,
August 2017 in “Journal of comparative pathology” Trichoblastomas in rabbits are linked to uncontrolled embryonic hair growth and have distinct histological features.
8 citations,
January 2007 in “International journal of experimental pathology” Hairless HRS/J mice resist Bacillus anthracis skin infections due to high numbers of immune cells, not because they lack hair follicles.
8 citations,
April 1979 in “Journal of Cutaneous Pathology” Giant cells found in some male pattern baldness cases may help diagnose it and suggest hair is mistakenly seen as foreign by the body.
7 citations,
January 2011 in “Veterinary Pathology” A horse with severe hair loss was diagnosed with alopecia areata and a yeast infection.
3 citations,
August 2012 in “Annals of Diagnostic Pathology” AIDS may cause changes in the scalp that increase infection risk and hair loss.
2 citations,
January 2012 in “Journal of Cutaneous Pathology” The author clarifies that alopecia areata incognito and diffuse alopecia areata are different types of hair loss with unique symptoms and challenges in diagnosis.
2 citations,
June 2001 in “American Journal of Pathology” The document concludes that understanding how hair follicles naturally die and regenerate is important for insights into organ development and could impact health and disease treatment.
1 citations,
August 2023 in “Journal of cutaneous pathology” The analysis of a large pilomatricoma revealed five distinct areas with different gene activity related to hair growth and tumor development.
April 2024 in “Journal of cutaneous pathology” Skin conditions like seborrheic dermatitis can make it harder to correctly diagnose hair loss because they can cause the oil glands in the skin to shrink.
7 citations,
May 2010 in “Journal of Cutaneous Pathology” A new genetic area linked to a rare hair loss condition was found on chromosome 13 in a Chinese family.
7 citations,
July 2006 in “Journal of cutaneous pathology” A 21-year-old had a rare developmental anomaly with a misplaced sebaceous gland in a hair follicle.
6 citations,
August 2006 in “Journal of Cutaneous Pathology” Two teenage brothers had a rare, treatment-resistant form of female-pattern hair loss with unusual scalp changes.
3 citations,
July 2013 in “Journal of Cutaneous Pathology” A woman's hair loss, resembling an autoimmune condition, improved after treatment, but requires ongoing checks due to potential serious associations.