January 2022 in “SSRN Electronic Journal” This study reports that aging in mice leads to curved hair follicles and an increase in white hairs, potentially due to changes in keratinocyte and melanocyte stem cells.
January 2023 in “Figshare” This review discusses changes in hair follicle characteristics and stem cell dynamics as indicators of aging in mice, noting increased occurrences of white hairs and curved hair follicles at older ages.
September 2023 in “Cells tissues organs” In this study, researchers observed that in mice, as they age beyond 200 days, unusual curved hair follicles and increased white hairs emerge, indicating stem cell-related changes in keratinocyte and melanocyte characteristics, providing insights into hair aging processes.
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August 2006 in “Laboratory Investigation” In this study, the combination of SCF and ET-1 was found to significantly enhance skin pigmentation and melanin content in human skin xenografts on SCID mice compared to either treatment alone.
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January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, silencing P-cadherin in human scalp hair follicles reduced melanogenesis and associated protein expression, suggesting P-cadherin is crucial for normal hair pigmentation via GSK3β-mediated Wnt signaling.