19 citations
,
September 2016 in “Journal of the European Academy of Dermatology and Venereology” Trichofolliculoma is a unique benign tumor mainly affecting middle-aged adults' faces, often misdiagnosed without histopathology.
December 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” New cells join the hair's dermal papilla during the growth phase, possibly affecting hair thickness.
1 citations
,
January 2009 in “Journal of Dermatology and Venereology” Cells from the upper hair follicle grow more actively, suggesting stem cells may be located there.
26 citations
,
August 2007 in “Annals of Anatomy - Anatomischer Anzeiger” Feathers become harder as they develop due to a change in keratin type.
37 citations
,
April 1977 in “Journal of Cutaneous Pathology” Skin biopsy can help diagnose hair loss from trichotillomania.
2 citations
,
February 2013 in “Journal of the Saudi Society for Dermatology & Dermatologic Surgery” New hair spray caused a hair shaft disorder.
1 citations
,
January 2018 in “Indian journal of dermatopathology and diagnostic dermatology” Trichoscopy helps diagnose and monitor hair and scalp problems without needing many biopsies.
April 2017 in “Journal of Investigative Dermatology” Early and late matrix progenitors in hair follicles create different cell layers, with early ones forming the companion layer and later ones forming the inner root sheath and hair shaft.
173 citations
,
August 2015 in “Developmental cell” The study identified unique genes in hair follicle cells and their environment, suggesting these genes help organize cells for hair growth.
68 citations
,
April 2014 in “Journal of Investigative Dermatology” Trichohyalin-like proteins are essential for the development of skin structures like hair, nails, and feathers.
29 citations
,
February 1989 in “Journal of Cutaneous Pathology” A unique hair tumor with a rippled pattern was identified, showing incomplete differentiation and unusual cell arrangements.
Keratinocytes grew and migrated into hair follicle areas but disappeared after 15-20 days.
July 2025 in “Dermatology Practical & Conceptual” Hair changes and a high occipital hairline may help diagnose Trichorhinophalangeal Syndrome.
Trichohyalin, a protein from pig tongue, was purified and found to have a filamentous structure.
187 citations
,
May 1988 in “Differentiation” Trichocytic cytokeratins are found in hair, nails, tongue, and thymus cells, showing complex regulation in tissue development.
46 citations
,
August 2012 in “Experimental Dermatology” Engineered skin can grow chimeric hair follicles only with mouse dermal papilla cells.
7 citations
,
July 2008 in “Experimental Dermatology” The study concluded that a protein important for hair strength is regulated by certain molecular processes and is affected by growth phases.
June 2022 in “Our Dermatology Online” Trichoscopy is essential for early detection and monitoring of female-pattern hair loss.
2 citations
,
February 2015 in “Journal of Tissue Engineering and Regenerative Medicine” Transplanting a mix of specific skin cells can significantly improve the repair of damaged hair follicles.
January 2020 in “Hair therapy & transplantation” Healthy hair and scalp depend on overall body health.
April 2018 in “Journal of Investigative Dermatology” Key signals for hair follicle formation were identified.
Fgf20 helps form hair follicle structures by stopping cell division and increasing cell movement.
31 citations
,
August 2001 in “PubMed” TrichoScan accurately measures hair growth and showed improved hair counts and thickness after finasteride treatment.
74 citations
,
July 2008 in “Journal of Dermatological Case Reports” Trichoscopy is a quick and easy way to diagnose most genetic hair problems without invasive methods.
86 citations
,
August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
14 citations
,
January 1988 28 citations
,
July 2000 in “PubMed” Hair structure forms the same way inside and outside the body.
January 2020 in “Medpulse International Journal of General Medicine” Trichoscopy helps diagnose and monitor hair loss, showing different signs at various stages of hair thinning.
7 citations
,
May 1979 in “Medical & biological engineering & computing” The trichometer accurately measures hair growth and is easy to use.