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Differential Expression of CXCL12 in Human and Mouse Hair: Androgens Induce CXCL12 in Human Dermal Papilla and Dermal Sheath Cup.
Int J Mol Sci
December 2024
Epi Biotech Co., Ltd., Incheon 21983, Republic of Korea.
We previously demonstrated that C-X-C Motif Chemokine Ligand 12 (CXCL12) is primarily secreted by dermal fibroblasts in response to androgens and induces hair miniaturization in the mouse androgenic alopecia (AGA) model. However, the direct effects of androgen-induced CXCL12 on dermal papilla cells (DPCs) and dermal sheath cup cells (DSCs) have not been demonstrated. First, we compared single-cell RNA sequencing data between mouse and human skin, and the results show that CXCL12 is highly co-expressed with the androgen receptor (AR) in the DPCs and DSCs of only human hair.
View Article and Find Full Text PDFComparative study between fractional CO2 laser alone versus fractional CO2 laser combined with topical dutasteride in treatment of male androgenic alopecia.
Lasers Med Sci
January 2025
Dermatology and Venereology Department, Faculty of Medicine (Girls), Al-Azhar University, 53, New Cairo, 3rd Zone Fifth, Settlement, Cairo, Egypt.
Androgenic alopecia (AGA) is the most common form of non-scarring hair loss, characterized by marked hair follicle miniaturization. AGA is a challenging skin condition with limited treatment results. Laser light can promote hair growth at specific wavelengths.
View Article and Find Full Text PDFBirth Outcomes of Infants Born to Mothers with Alopecia Areata: A Nationwide Population-based Study in Korea.
Acta Derm Venereol
January 2025
Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea.
Data on pregnancy outcomes in patients with alopecia areata (AA) are limited. The aim of this study is to determine the association between maternal AA and risk of adverse birth outcomes in children. A retrospective cohort study was conducted on 45,328 children born to mothers with AA and 4,703,253 controls born to mothers without AA using the Korean National Health Insurance Claims database from 2002 to 2016.
View Article and Find Full Text PDFSublingual Minoxidil Increases Fibre Diameter in Male Androgenetic Alopecia. - A proxy for Reversal of Hair Follicle Miniaturization.
Clin Exp Dermatol
January 2025
Tricholab AB, Warsaw, Poland.
Background: The histological hallmark of male androgenetic alopecia (MAGA) is transformation of terminal follicles into miniaturized secondary-vellus follicles. As the volume of the dermal papilla determines the size of the hair bulb and hair fibre diameter, any treatment induced increase in fibre diameter could be used as a proxy for reversal of hair follicle miniaturization. While clinical trials with minoxidil topical solution in MAGA do not demonstrate increased fibre diameter, vellus-to-terminal reconversion is shown in a humanized mouse model treated with MXL.
View Article and Find Full Text PDFBaricitinib for the treatment of severe alopecia areata: results from a 52-week multicenter retrospective real-world study.
J Dermatolog Treat
December 2025
Dermatology Unit, IRCCS Humanitas Research Hospital, Milan, Italy.
Baricitinib, a JAK 1/2 inhibitor, is approved for treating severe alopecia areata (AA). This study aimed to evaluate the long-term effectiveness and safety of baricitinib in a real-world setting over 52 weeks. This multicenter retrospective study included 96 adult patients diagnosed with severe AA from 11 Italian Dermatology Units.
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