[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 …

Commentary: Chemiexcitation of melanin derivatives induces DNA photoproducts long after UV exposure

RP Gajula, S Gaddameedhi - Frontiers in Physiology, 2015 - frontiersin.org
Cutaneous malignant melanoma (CMM) is one of the most rapidly increasing cancers in the
western world (Bowden, 2004). Frequency of its occurrence is closely associated with skin …

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 …

Free radical scavenging properties of melanin: interaction of eu-and pheo-melanin models with reducing and oxidising radicals

M Różanowska, T Sarna, EJ Land… - Free Radical Biology and …, 1999 - Elsevier
The human skin and eye melanin is commonly viewed as an efficient photoprotective agent.
To elucidate the molecular mechanism of the melanin-dependent photoprotection, we …

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 …

Melanin photosensitizes ultraviolet light (UVC) DNA damage in pigmented cells

CA Huselton, HZ Hill, JP O'Neill - Environmental and molecular …, 1990 - Wiley Online Library
Melanins, pigments of photoprotection and camouflage, are very photoreactive and can both
absorb and emit active oxygen species. Nevertheless, black skinned individuals rarely …

Investigating the role of melanin in UVA/UVB-and hydrogen peroxide-induced cellular and mitochondrial ROS production and mitochondrial DNA damage in human …

H Swalwell, J Latimer, RM Haywood… - Free Radical Biology …, 2012 - Elsevier
Skin cancer incidence is dramatically increasing worldwide, with exposure to ultraviolet
radiation (UVR) a predominant factor. The UVA component initiates oxidative stress in …

[HTML][HTML] Antioxidant role on the protection of melanocytes against visible light-induced photodamage

JV Freitas, HC Junqueira, WK Martins… - Free Radical Biology …, 2019 - Elsevier
Visible light can induce the generation of singlet oxygen and can cause oxidative stress,
especially in melanocytes due to melanin photosensitization. Currently, there is no organic …

Effects of the melanin precursor 5, 6-dihydroxy-indole-2-carboxylic acid (DHICA) on DNA damage and repair in the presence of reactive oxygen species

MC Pellosi, AA Suzukawa, AC Scalfo… - Archives of biochemistry …, 2014 - Elsevier
Eumelanin is a heterogeneous polymer composed of 5, 6-dihydroxyindole-2-carboxylic acid
(DHICA) and 5, 6-dihydroxyindole (DHI). Studies have shown that DHICA promotes single …

Redox activities of melanins investigated by electrochemical reverse engineering: implications for their roles in oxidative stress

E Kim, L Panzella, A Napolitano, GF Payne - Journal of Investigative …, 2020 - Elsevier
Melanins, the main epidermal pigments of man, have been viewed traditionally as
performing photoprotective and antioxidant functions, yet increasing evidence indicates they …