Increased Melanogenesis is a Risk Factor for Oxidative DNA Damage— Study on Cultured Melanocytes and Atypical Nevus Cells

NPM Smit, FA Van Nieuwpoort, L Marrot… - Photochemistry and …, 2008 - Wiley Online Library
Melanin synthesis is an oxygen‐dependent process that acts as a potential source of
reactive oxygen species (ROS) inside pigment‐forming cells. The synthesis of the lighter …

Disturbed melanin synthesis and chronic oxidative stress in dysplastic naevi

S Pavel, F van Nieuwpoort, H van der Meulen… - European journal of …, 2004 - Elsevier
Dysplastic naevi (DN) are a known risk factor for malignant melanoma. Their occurrence is
closely connected with the degree of skin pigmentation. People with a light complexion are …

[HTML][HTML] Novel properties of melanins include promotion of DNA strand breaks, impairment of repair, and reduced ability to damage DNA after quenching of singlet …

AA Suzukawa, A Vieira, SMB Winnischofer… - Free Radical Biology …, 2012 - Elsevier
Melanins have been associated with the development of melanoma and its resistance to
photodynamic therapy (PDT). Singlet molecular oxygen (1O2), which is produced by …

α‐MSH activates immediate defense responses to UV‐induced oxidative stress in human melanocytes

X Song, N Mosby, J Yang, A Xu… - Pigment cell & …, 2009 - Wiley Online Library
Exposure of cultured human melanocytes to ultraviolet radiation (UV) results in DNA
damage. In melanoma, UV‐signature mutations resulting from unrepaired photoproducts are …

DNA damage enhances melanogenesis.

MS Eller, K Ostrom, BA Gilchrest - Proceedings of the …, 1996 - National Acad Sciences
Although the ability of UV irradiation to induce pigmentation in vivo and in vitro is well
documented, the intracellular signals that trigger this response are poorly understood. We …

Melanin: a two edged sword?

HZ Hill, W Li, P Xin, DL Mitchell - Pigment cell research, 1997 - Wiley Online Library
Melanin is both photosensitizer and photoprotector. Skin cancer rates decrease with
increasing constitutive pigmentation, yet the pigment has been shown to be photoreactive …

Melanosomal Damage in Normal Human Melanocytes Induced by UVB and Metal Uptake—A Basis for the Pro‐oxidant State of Melanoma

S Gidanian, M Mentelle… - Photochemistry and …, 2008 - Wiley Online Library
Melanins are ubiquitous catecholic pigments, formed in organelles called melanosomes
within melanocytes, the function of which is to protect skin against harmful effects of UV …

Correlation between melanogenic and catalase activity in in vitro human melanocytes: a synergic strategy against oxidative stress

V Maresca, E Flori, S Briganti… - Pigment Cell & …, 2008 - Wiley Online Library
UV‐induced DNA damage can lead to melanoma, the most dangerous form of skin cancer.
Understanding the mechanisms employed by melanocytes to protect against UV is therefore …

Redox regulation in human melanocytes and melanoma

FL Meyskens Jr, P Farmer, JP Fruehauf - Pigment cell research, 2001 - Wiley Online Library
The human melanocyte is continuously exposed to intrinsic and extrinsic sources of reactive
biochemical species, but is finely tuned via the intrinsic anti‐oxidant and radical properties of …

[HTML][HTML] (Pheo) melanin photosensitizes UVA-induced DNA damage in cultured human melanocytes

E Wenczl, NPM Smit, S Pavel, AA Schothorst… - Journal of investigative …, 1998 - Elsevier
The question of whether melanins are photoprotecting and/or photosensitizing in human
skin cells continues to be debated. To evaluate the role of melanin upon UVA irradiation …