June 2022 in “Veterinary evidence” Clomipramine alone does not reduce overgrooming in cats with psychogenic alopecia.
May 2019 in “Small Animal Dermatology” The dog had sebaceous adenitis, treated with ciclosporin, leading to some hair regrowth.
November 2016 in “Zoo biology” Adding more vegetables and fruits improved capybaras' coat quality and health.
November 2025 in “Veterinary and Animal Science” Camel hair structure, not color, helps camels stay cool in the desert.
April 2024 in “Communications biology” Enzymes involved in Vitamin A metabolism affect hair growth and type in mice.
December 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” AP-2α and AP-2β proteins are essential for healthy adult skin and hair.
TLR2 helps control hair growth and regeneration, and its reduction with age or obesity can impair hair growth.
4 citations
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March 2021 in “Parasitology Research” Besnoitiosis, a parasitic disease, has been found in donkeys in Italy and may be more common in Europe than previously thought.
October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
Arginine deficiency hinders hair growth in androgenetic alopecia, but restoring it can promote hair regeneration.
69 citations
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August 2016 in “PubMed” High stress can disrupt hair growth, but certain supplements might help.
49 citations
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October 2022 in “PubMed” Hair loss is influenced by genetics, diet, and lifestyle, but more research is needed on nutrition's role.
1 citations
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September 2024 in “Veterinary Dermatology” Trichography is important for diagnosing hair fragility in Pomeranian dogs with hair cycle issues.
January 2025 in “International Journal of Advanced Biochemistry Research” Alpha linolenic acid and linoleic acid help treat inflammatory skin conditions in dogs.
June 2024 in “Pharmacon Jurnal Farmasi Indonesia” A 1:3 ratio of virgin coconut oil to candlenut oil is best for promoting hair growth.
384 citations
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June 2005 in “Genes & development” β-catenin is essential for stem cell activation and proliferation in hair follicles.
321 citations
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January 2012 in “Cell stem cell” TGF-β2 helps activate hair follicle stem cells by counteracting BMP signals.
283 citations
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February 2011 in “Cell stem cell” COL17A1 is crucial for preventing hair graying and loss by supporting hair and pigment stem cells.
260 citations
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December 2012 in “Cold Spring Harbor Perspectives in Biology” Wnt signaling is crucial for skin development and health, and its disruption can cause skin diseases.
218 citations
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October 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Mice lacking the PPARγ gene in their fat cells had almost no fat tissue, severe metabolic problems, and abnormal development of other fat-related tissues.
218 citations
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April 2008 in “Genes & Development” Skin stem cells help repair damage and maintain healthy skin.
184 citations
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September 2006 in “PLoS Genetics” The Apc gene is crucial for normal skin and thymus development.
166 citations
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July 1999 in “American Journal Of Pathology” The hairless (hr) gene is essential for normal hair follicle function and its mutation leads to hair loss.
156 citations
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October 2012 in “Seminars in Cell & Developmental Biology” Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.
136 citations
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July 2014 in “Proceedings of the National Academy of Sciences of the United States of America” FGF5 gene mutations cause unusually long eyelashes by affecting hair growth regulation.
134 citations
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July 2020 in “Experimental dermatology” Hair follicles are normally protected from the immune system, but when this protection fails, it can cause hair loss in alopecia areata.
127 citations
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January 2013 in “PLOS ONE” Probiotic bacteria improved skin and hair health in aged mice.
118 citations
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January 2016 in “Current Topics in Developmental Biology” The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.
117 citations
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November 2006 in “Experimental Dermatology” The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.
101 citations
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August 2010 in “PLoS ONE” Selenoproteins are crucial for healthy skin and hair.