The fate of interfollicular epidermis keratinocytes which filled the hair follicles bursas of collagen dermis framework was investigated in the autotransplantation experiment. Collagen dermis framework was prepared from the skin flap. Interfollicular epidermis was detached with the help of suction method and transferred to the collagen dermis framework surface which was placed previously on the full thickness skin defect surface. It was established that in this environment keratinocytes not only developed, but some of them migrated into the hair follicle bursas cavities. It resulted in the follicular-like structures formation, cell elements of which differentiated in the manner characteristic of interfollicular epidermis. However, in spite of the fact that the epidermal cells partially retained their proliferating ability, ingrowing would completely disappear by the 15th to 20th day after the transplantation.
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Am J Clin Dermatol
December 2024
Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, M6 8HD, UK.
In this review, we discuss recent developments in our understanding of frontal fibrosing alopecia, a disease that has become increasingly common and widespread since its first description in 1994. An inherited predisposition to frontal fibrosing alopecia, previously suspected from the occurrence of familial cases, has been confirmed through genetic studies. Nevertheless, the epidemiology continues to implicate environmental factors in the aetiology.
View Article and Find Full Text PDFToxicology
November 2024
Department of Dermatology, Dermatology Hospital, Southern Medical University, No.2, Lujing Road, Yuexiu District, Guangzhou, Guangdong 510091, China. Electronic address:
Skin toxicities are the most common adverse effects of epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs). While EGFR-TKIs induce pyroptosis in lung cancer cells through Gasdermin E (GSDME) activation, it is unknown whether they can similarly affect skin cells. In this study, we used immunohistochemistry to demonstrate that in acneiform rash, the N-terminus of GSDME (GSDME-N) is predominantly expressed in the basal layer of the follicular epithelium and sebocytes, while it is absent in the interfollicular epidermis.
View Article and Find Full Text PDFJ Eur Acad Dermatol Venereol
September 2024
Inflammation & Immunology Research Unit, Pfizer, Cambridge, Massachusetts, USA.
Both alopecia areata (AA) and vitiligo share common pathogenesis involving, interferon-γ (IFN-γ) and interleukin-15 (IL-15) signalling pathways that activate cytotoxic CD8+ T lymphocytes. These shared mechanisms may explain why both diseases respond to currently available treatments (e.g.
View Article and Find Full Text PDFCurr Issues Mol Biol
July 2024
Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Skin Res Technol
August 2024
Department of Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
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