scholarly journals Peptides-derived from Scales of Branchiostegus japonicus Inhibit Ultraviolet B-induced Oxidative Damage and Photo-aging in Skin Cells

2015 ◽  
Vol 25 (3) ◽  
pp. 269-275 ◽  
Author(s):  
Min Chang Oh ◽  
Ki Cheon Kim ◽  
Chang-ik Ko ◽  
Yong Seok Ahn ◽  
Jin Won Hyun
Keyword(s):  
Oxidative Damage ◽  
Ultraviolet B ◽  
Skin Cells ◽  
Branchiostegus Japonicus

scholarly journals Marine Compound 3-bromo-4,5-dihydroxybenzaldehyde Protects Skin Cells against Oxidative Damage via the Nrf2/HO-1 Pathway

Marine Drugs ◽  
2019 ◽  
Vol 17 (4) ◽  
pp. 234 ◽  
Author(s):  
Yea Seong Ryu ◽  
Pincha Devage Sameera Madushan Fernando ◽  
Kyoung Ah Kang ◽  
Mei Jing Piao ◽  
Ao Xuan Zhen ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Antioxidant Response ◽  
Signaling Cascades ◽  
Heme Oxygenase 1 ◽  
Related Factor ◽  
Skin Cells ◽  
Reverse Transcription Pcr ◽  
Extracellular Signal ◽  
Diphenyltetrazolium Bromide ◽  
Marine Compound

In this study, we aimed to illustrate the potential bio-effects of 3-bromo-4,5-dihydroxybenzaldehyde (3-BDB) on the antioxidant/cytoprotective enzyme heme oxygenase-1 (HO-1) in keratinocytes. The antioxidant effects of 3-BDB were examined via reverse transcription PCR, Western blotting, HO-1 activity assay, and immunocytochemistry. Chromatin immunoprecipitation analysis was performed to test for nuclear factor erythroid 2-related factor 2 (Nrf2) binding to the antioxidant response element of the HO-1 promoter. Furthermore, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed that the cytoprotective effects of 3-BDB were mediated by the activation of extracellular signal-regulated kinase (ERK) and protein kinase B (PKB, Akt) signaling. Moreover, 3-BDB induced the phosphorylation of ERK and Akt, while inhibitors of ERK and Akt abrogated the 3-BDB-enhanced levels of HO-1 and Nrf2. Finally, 3-BDB protected cells from H2O2- and UVB-induced oxidative damage. This 3-BDB-mediated cytoprotection was suppressed by inhibitors of HO-1, ERK, and Akt. The present results indicate that 3-BDB activated Nrf2 signaling cascades in keratinocytes, which was mediated by ERK and Akt, upregulated HO-1, and induced cytoprotective effects against oxidative stress.

Hydrogen-rich water-alleviated ultraviolet-B-triggered oxidative damage is partially associated with the manipulation of the metabolism of (iso)flavonoids and antioxidant defence in Medicago sativa

2015 ◽  
Vol 42 (12) ◽  
pp. 1141 ◽  
Author(s):  
Yanjie Xie ◽  
Wei Zhang ◽  
Xingliang Duan ◽  
Chen Dai ◽  
Yihua Zhang ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Medicago Sativa ◽  
H2 Production ◽  
Hydrogen Gas ◽  
Ultraviolet B ◽  
In Vitro Tests ◽  
Antioxidant Defence ◽  
Experimental Conditions ◽  
Uvb Irradiation

External administration of hydrogen gas (H2) benefits plants from multiple environmental stimuli. However, the physiological significance and molecular mechanism of H2 in ultraviolet-B (UVB) irradiation are largely unexplored. Here, the biological function of H2 in the regulation of plant UVB-tolerance was investigated by using hydrogen-rich water (HRW). Results showed that the exposure of alfalfa seedlings to UVB irradiation increased endogenous H2 production. Pretreatment with HRW mimicked the UVB-induced endogenous H2 production. Corresponding UVB-triggered toxic symptoms, in terms of lipid peroxidation and overproduction of reactive oxygen species (ROS), as well as the subsequent growth inhibition, were markedly mitigated. Metabolic profiling analysis by using ultra performance liquid chromatography-mass spectrometric (UPLC-MS), identified 40 (iso)flavonoids in UVB-treated alfalfa plants, with 22 kinds was increased by HRW. These changes resulted in the alternation of (iso)flavonoids profile, with the effective promotion of isoflavone and flavanone subfamilies in particular. These compounds included afromosin, afromosin 7-O-β-D-glucoside-malonate, daidzein, formononetin 7-O-β-D-glucoside-6ʹʹ-O-malonate, garbanzol, matteucin and naringenin. In vitro tests further showed that the HRW-modulated (iso)flavonoids profile upon UVB stress possessed advanced ROS-quenching and antioxidant capacities under our experimental conditions. Meanwhile, UVB-triggered upregulation in the transcription levels of (iso)flavonoids biosynthetic-related genes were substantially strengthened by HRW. The activities and related transcripts of representative antioxidant enzymes were also induced. Taken together, our findings indicate that HRW confers tolerance to UVB-induced oxidative damage partially by the manipulation of (iso)flavonoids metabolism and antioxidant defence in Medicago sativa L.

scholarly journals Protective Effect of Nitric Oxide (NO) against Oxidative Damage in Larix gmelinii Seedlings under Ultraviolet-B Irradiation

Forests ◽  
2016 ◽  
Vol 7 (12) ◽  
pp. 251 ◽  
Author(s):  
Haiqing Hu ◽  
Zhenbao Zhou ◽  
Xiaoxin Sun ◽  
Zhonghua Zhang ◽  
Qinghuan Meng
Keyword(s):  
Nitric Oxide ◽  
Oxidative Damage ◽  
Protective Effect ◽  
Ultraviolet B ◽  
Larix Gmelinii ◽  
Ultraviolet B Irradiation

Coptis chinensis inflorescence and its main alkaloids protect against ultraviolet-B-induced oxidative damage

2013 ◽  
Vol 5 (4) ◽  
pp. 1665-1672 ◽  
Author(s):  
Bingxin Ma ◽  
Ling Zhu ◽  
Xiaoyan Zang ◽  
Yuxin Chen ◽  
Dong Li ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Ultraviolet B ◽  
Coptis Chinensis

Supplementation with 5-formyltetrahydrofolate alleviates ultraviolet B-inflicted oxidative damage in folate-deficient zebrafish

2019 ◽  
Vol 182 ◽  
pp. 109380 ◽  
Author(s):  
Hung-Chi Tu ◽  
Meng-Yun Lin ◽  
Chia-Yang Lin ◽  
Tsun-Hsien Hsiao ◽  
Zhi-Hong Wen ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Ultraviolet B
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