Protective effects of natural polyphenols in reactive carbonyl species/lipid peroxidation-induced toxicity

2011 ◽  
Author(s):  
Qin Zhu
Redox Biology ◽  
2021 ◽  
pp. 101899
Author(s):  
Alessandra Altomare ◽  
Giovanna Baron ◽  
Erica Gianazza ◽  
Cristina Banfi ◽  
Marina Carini ◽  
...  

Metabolites ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 213 ◽  
Author(s):  
Mitran ◽  
Nicolae ◽  
Tampa ◽  
Mitran ◽  
Caruntu ◽  
...  

The constant generation of reactive carbonyl species (RCSs) by lipid peroxidation during aerobic metabolism denotes their involvement in cell homeostasis. Skin represents the largest organ of the body that is exposed to lipid peroxidation. Previous studies have suggested the involvement of oxidative stress in the development of lichen planus (LP), a chronic inflammatory skin condition with a complex pathogenesis. The aim of our study is to investigate a panel of pro-oxidants (4-hydroxy-nonenal (4-HNE), thiobarbituric acid reactive substances (TBARS), and malondialdehyde (MDA)), the total antioxidant status (TAS), and thiol-disulfide homeostasis parameters (TDHP), including total thiol (TT), native thiol (NT), disulfides (DS), DS/NT ratio, DS/TT ratio, and NT/TT ratio. The comparative determinations of serum levels of 4-HNE, TBARS, and MDA in patients with LP (n = 31) and controls (n = 26) show significant differences between the two groups (4-HNE: 7.81 ± 1.96 µg/mL vs. 6.15 ± 1.17 µg/mL, p < 0.05, TBARS: 4.23 ± 0.59 µmol/L vs. 1.99 ± 0.23 µmol/L, p < 0.05, MDA: 32.3 ± 6.26 ng/mL vs. 21.26 ± 2.36 ng/mL). The serum levels of TAS are lower in LP patients compared to the control group (269.83 ± 42.63 µmol/L vs. 316.46 ± 28.76 µmol/L, p < 0.05). The serum levels of TDHP are altered in LP patients compared to controls (NT: 388.10 ± 11.32 µmol/L vs. 406.85 ± 9.32., TT: 430.23 ± 9.93 µmol/L vs. 445.88 ± 9.01 µmol/L, DS: 21.06 ± 1.76 µmol/L vs. 19.52 ± 0.77µmol/L). Furthermore, a negative association between pro-oxidants and TAS is identified (4-HNE – rho = −0.83, p < 0.01, TBARS – rho = −0.63, p < 0.01, and MDA – rho = −0.69, p < 0.01). Understanding the mechanisms by which bioactive aldehydes exert their biological effects on the skin could help define effective therapeutical strategies to counteract the cytotoxic effects of these reactive metabolic intermediates.


2019 ◽  
Vol 10 ◽  
Author(s):  
Jun’ichi Mano ◽  
Sayaka Kanameda ◽  
Rika Kuramitsu ◽  
Nagisa Matsuura ◽  
Yasuo Yamauchi

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 690
Author(s):  
Giancarlo Aldini ◽  
Alessandra A. Altomare

The Special issue is composed of 13 contributions: 9 research papers and 4 reviews [...]


Molecules ◽  
2016 ◽  
Vol 21 (3) ◽  
pp. 280 ◽  
Author(s):  
Sung Hwang ◽  
Yoon-Mi Lee ◽  
Giancarlo Aldini ◽  
Kyung-Jin Yeum

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