Results 91 to 100 of about 1,759 (175)

Photoprotective potential of gadusol against ultraviolet B radiation in melanocytes

Photochemistry and Photobiology, EarlyView.
Gadusol protects melanocytes from ultraviolet B (UVB)‐induced damage without cytotoxicity. Abstract The increasing incidence of skin cancer, including melanoma, combined with the need for ultraviolet (UV) filters that are safe for human health and marine ecosystems, is driving the search for new photoprotective agents.
Andressa Mai Matsumoto, Rocío Isla Naveira, Andy Joel Taipe Huisa, Marcelo Augusto Germani Marinho, Lais Zortéa, José María Monserrat, Agueda Elena Massa, María Sandra Churio, Ana Paula de Souza Votto   +8 more
wiley   +1 more source

Integrated genomic and structural dissection of melanism in Indian leopard (Panthera pardus fusca)

BMC Genomics
Background Melanism in wild felids represents an intriguing evolutionary trait, potentially advantageous under specific ecological conditions, but the genetic basis of this phenotype remains unclear in many populations.
Avijit Ghosh, Sachin Kumar, Paresh Porob, Mukesh Thakur, Malay Shukla, Satish Kumar, Sweta Nidhi, Abhishek Singh   +7 more
doaj   +1 more source

On partial melanism associated with parathyroid enlargement in pigeons

, 1945
Five cases of non-genetic partial melanism were observed in adult female domestic pigeons. One similar case was observed in an old male hybrid (Zenaida x Zenaidura) dove after it became unable to fly.
Hollander, Willard Fisher, Riddle, Oscar, W. F. Hollander, Oscar Riddle   +3 more
core   +1 more source

Keratinocytes exposed to ultraviolet A and ultraviolet B radiation induce responses in melanocytes

Photochemistry and Photobiology, EarlyView.
Keratinocyte‐derived soluble factors regulate melanocyte responses following UV exposure. Conditioned medium from irradiated keratinocytes enhances melanocyte mitochondrial activity, cell proliferation, and cell cycle progression while improving survival after UVA‐induced damage.
Lais Zortéa, Andressa Mai Matsumoto, Alessandra Costa Lopes, Eduardo Felipe Wagner, Tanira da Silveira Prieto, Andrés Delgado Cañedo, Daza de Moraes Vaz Batista Filgueira, Ana Paula de Souza Votto   +7 more
wiley   +1 more source

Clinical descriptive and long‐term outcome of melanocytic uveal lesions in young dogs: 40 cases (45 eyes) including 13 cases of sector iridectomy

Veterinary Ophthalmology, Volume 28, Issue 2, Page 371-385, March 2025.
Abstract Purpose To describe the clinical features surgical technique, early and long‐term outcome with or without surgery, and histopathological findings of melanocytic anterior uveal lesions in young dogs. Methods Medical records of dogs at a guide dog facility removed from training due to a pigmented iris lesion were reviewed from 2014 to 2021 ...
Valerie Liliane Dufour, Julie A. Cohen, Charles‐Antoine Assenmacher, Dolores M. Holle, Amy C. Durham, Gustavo D. Aguirre, Keiko Miyadera   +6 more
wiley   +1 more source

Diagnostic Utility of PRAME Immunohistochemistry for Distinguishing Acral Melanoma From Acral Melanocytic Nevi

Journal of Cutaneous Pathology, Volume 53, Issue 12, Page 1148-1158, December 2026.
ABSTRACT Introduction Preferentially expressed antigen in melanoma (PRAME) immunohistochemistry helps distinguish non‐acral melanocytic lesions, but few studies have addressed its value in acral lesions. We aimed to identify an optimal PRAME cut‐off score to differentiate acral melanoma (AM) from acral melanocytic nevi (AMN).
Kritsada Phatcharamaneepakorn, Panitta Sitthinamsuwan, Penvadee Pattanaprichakul, Manasmon Chairatchaneeboon, Nutcha Yodrabum   +4 more
wiley   +1 more source

Enhanced Melan‐A Red Chromogen Labeling in Melanoma Compared to Nevus Cells: A Diagnostic Aid in Dual Multiplex Immunohistochemistry With Ki67

Journal of Cutaneous Pathology, Volume 53, Issue 12, Page 1180-1185, December 2026.
ABSTRACT Background Distinguishing melanoma cells from nevus cells remains a diagnostic challenge, particularly in cases where melanoma exhibits nevoid morphology or nevus cells display atypical or epithelioid features. Accurate identification is essential for proper measurement of Breslow depth in melanomas arising in association with nevi and for ...
Peter N. Kundert, Elsayed H. Ibrahim, Victor G. Prieto, Phyu P. Aung   +3 more
wiley   +1 more source

The genetic and molecular basis of melanism in the grey squirrel (sciurus carolinensis)

, 2023
The grey squirrel (Sciurus carolinensis) has wildtype and melanic (dark) colour morphs. Melanism is associated with variations in the melanocortin-1 receptor (MC1R) gene in a number of species.
Helen R. McRobie (3277845)
core   +1 more source

Clinicopathological and molecular comparison of eosinophilic solid and cystic renal cell carcinoma and TFEB‐amplified renal cell carcinoma: a comprehensive study of 15 cases

Histopathology, Volume 89, Issue 6, Page 1083-1094, December 2026.
This study supports the need for ancillary testing to diagnose ESC‐RCC versus TFEB‐amplified RCC, as neither morphology nor immunohistochemistry is sufficiently specific to distinguish these entities. The underlying molecular drivers in each tumour are pathogenic TSC1 or TSC2 gene variants in ESC‐RCC and TFEB gene amplification in TFEB‐amplified RCC ...
Hayley Zullow, Melissa Y. Tjota, Jung Woo Kwon, Tatjana Antic   +3 more
wiley   +1 more source

Melanitis leda

Melanitis leda (Linnaeus, 1758) Materials Type status: Other material. Occurrence: individualCount: 1; sex: unknown; occurrenceID: CANGIOMB 0128; Taxon: genus: Melanitis; specificEpithet: leda; scientificNameAuthorship: (Linnaeus, 1758); Location: country: Vietnam; stateProvince: Ho Chi Minh City; Event: eventDate: 10/01/2025 Notes Recorded in Bui ...
Dang, Hiep Ngoc, Huynh, Hoan Duc, Phan, Trung Van, Bui, Kiet Nguyen The, Luong, Thao Thi Thu, Nguyen, Vu Dang Hoang   +5 more
openaire   +4 more sources