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This study diagnosed a group of six girls with various ectodermal abnormalities, identifying cranio-skeletal malformations consistent with focal dermal hypoplasia (Goltz syndrome), and found heterozygous mutations in the PORCN gene in two children.

This review discusses the identification and characteristics of melanocyte stem cells, emphasizing their role in hair pigmentation, greying, and skin repigmentation, but reports no new research findings.

This article reviews Cronkhite-Canada syndrome as a distinct condition from Peutz-Jeghers syndrome and familial polyposis, with cases showing gastrointestinal polyposis, skin, hair, nail abnormalities, and hypoproteinemia.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

This study demonstrates that extracellular ATP induced by UV radiation promotes melanin production in human melanocytes, suggesting ATP-induced purinergic signaling may influence skin pigmentation.