Unveiling singlet oxygen spin trapping in catalytic oxidation processes using in situ kinetic EPR analysis

JH Wu, F Chen, TH Yang… - Proceedings of the …, 2023 - National Acad Sciences
Singlet oxygen (1O2) plays a pivotal role in numerous catalytic oxidation processes utilized
in water purification and chemical synthesis. The spin-trapping method based on electron …

[HTML][HTML] Enlisting electrochemistry to reveal melanin's redox-related properties

E Kim, Z Wang, JW Phua, WE Bentley… - Materials …, 2024 - pubs.rsc.org
Melanin has been surprisingly difficult to characterize using either bottom-up studies
focused on molecular structure or top-down studies focused on functional properties. We …

[HTML][HTML] Understanding the Mechanism of Light-Induced Age-Related Decrease in Melanin Concentration in Retinal Pigment Epithelium Cells

AE Dontsov, MA Yakovleva, AA Vasin, AA Gulin… - International Journal of …, 2023 - mdpi.com
It is known that during the process of aging, there is a significant decrease in the number of
melanosomes in the retinal pigment epithelium (RPE) cells in the human eye. Melanosomes …

Conservatism and Variability of the Antioxidant Defense System in the Retinal Pigment Epithelium of Vertebrates

YV Markitantova, VN Simirskii - Journal of Evolutionary Biochemistry and …, 2023 - Springer
During evolution and adaptation to life conditions, organisms have developed the strategies
allowing them to use reactive oxygen species (ROS) in the regulation of physiological …

[HTML][HTML] Photoreactivity and phototoxicity of experimentally photodegraded hair melanosomes from individuals of different skin phototypes

K Mokrzyński, M Sarna, T Sarna - Journal of Photochemistry and …, 2023 - Elsevier
Even though melanin is commonly viewed as natural photoprotectant, the pigment
demonstrates residual photoreactivity, which under certain conditions could contribute to …

Benzo [A] Pyrene and Benzo [E] Pyrene: photoreactivity and phototoxicity toward human keratinocytes

K Mokrzyński, G Szewczyk… - Photochemistry and …, 2023 - Wiley Online Library
Polycyclic aromatic hydrocarbons (PAHs) are a group of organic compounds derived mostly
from the incomplete combustion of fossil fuels and biomass. Human skin can absorb PAHs …

Effects of environmental factors on the fleroxacin photodegradation with the identification of reaction pathways

R Huang, H Cao, T Huang, H Li, Q Tang, L Wang… - Chemosphere, 2022 - Elsevier
The abuse of fluoroquinolones (FQs) antibiotics leads to bacterial resistance and
environmental pollution, so it is of great significance to verify the decomposition mechanism …

In-situ construction of fluorescent probes for hydrogen peroxide detection in mitochondria and lysosomes with on-demand modular assembling and double turn-on …

G Feng, P Zhai, Z Li, M Fan, Y Jiang, N Qiao… - Bioorganic …, 2023 - Elsevier
Due to the diverse H 2 O 2 distribution in organelles, fluorescent probes were usually
required to be prepared separately, which limited the convenience and practicability. Herein …

The effect of oxidative degradation of Dopa‐melanin on its basic physicochemical properties and photoreactivity

K Mokrzyński, A Żądło, G Szewczyk… - Pigment Cell & …, 2024 - Wiley Online Library
Melanin, particularly eumelanin, is commonly viewed as an efficient antioxidant and
photoprotective pigment. Nonetheless, the ability of melanin to photogenerate reactive …

[HTML][HTML] Photoreactivity of hair melanin from different skin phototypes—contribution of melanin subunits to the pigments photoreactive properties

K Mokrzynski, S Ito, K Wakamatsu… - International Journal of …, 2021 - mdpi.com
Photoreactivity of melanin has become a major focus of research due to the postulated
involvement of the pigment in UVA-induced melanoma. However, most of the hitherto …