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The secretion of TGF-β3 by adipose-derived stem cells inhibits melanin synthesis and its impact on the cAMP/PKA signaling pathway.
Arch Dermatol Res
January 2025
Burn and Wound Repair Center, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, Hebei Province, 050035, China.
This study aimed to investigate the role of transforming growth factor-beta 3 (TGF-β3) secreted by adipose-derived stem cells (ADSCs) in suppressing melanin synthesis during the wound healing process, particularly in burn injuries, and to explore the underlying mechanisms involving the cAMP/PKA signaling pathway. ADSCs were isolated from C57BL/6 mice and characterized using flow cytometry and differentiation assays. A burn injury model was established in mice, followed by UVB irradiation to induce hyperpigmentation.
View Article and Find Full Text PDFRefractory lipoatrophy treated with autologous whole blood injection: A case report.
World J Clin Cases
January 2025
Department of Dermatology, College of Medicine, Chungbuk National University, Cheongju 28644, Chungbuk, South Korea.
Background: Intramuscular corticosteroid injection may cause adverse effects such as dermal and/or subcutaneous atrophy, alopecia, hypopigmentation, and hyperpigmentation. Although cutaneous atrophy can spontaneously resolve, several treatment options have been suggested for this condition.
Case Summary: In this paper, we report a case of corticosteroid injection induced lipoatrophy treated with autologous whole blood (AWB) injection, as the condition had been unresponsive to fractional laser therapy.
Common Ancestry of the Id Locus: Chromosomal Rearrangement and Polygenic Possibilities.
J Mol Evol
January 2025
Computational Evolutionary Genomics Lab, Department of Biological Sciences, IISER Bhopal, Bhauri, Madhya Pradesh, India.
The diversity in dermal pigmentation and plumage color among domestic chickens is striking, with Black Bone Chickens (BBC) particularly notable for their intense melanin hyperpigmentation. This unique trait is driven by a complex chromosomal rearrangement on chromosome 20 at the Fm locus, resulting in the overexpression of the EDN3 (a gene central to melanocyte regulation). In contrast, the inhibition of dermal pigmentation is regulated by the Id locus.
View Article and Find Full Text PDFRegulation of eumelanogenesis-related genes by ethanol extract of Melaleuca Leucadendron leaves.
Biosci Biotechnol Biochem
January 2025
Department of Genetics & Biotechnology, Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Youngin, Korea.
Eumelanin, a type of skin melanin pigment, possesses the ability to absorb a wide range of wavelengths, providing protection to the skin from ultraviolet radiation. However, excessive production of eumelanin may result in hyperpigmentation. Consequently, the development of skin-brightening products that suppress eumelanin synthesis to achieve a lighter and more even skin tone is necessary.
View Article and Find Full Text PDFA 19-year-old asymptomatic woman.
Retin Cases Brief Rep
January 2025
New England Eye Center, Tufts Medical Center, Boston, MA.
Purpose: To describe a case of stellate multiform amelanotic choroidopathy (SMACH) with focal hyperfluorescence on indocyanine green angiography (ICGA).
Methods: Case report.
Results: A 19-year-old Caucasian woman was seen for an asymptomatic choroidal lesion.
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