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Abstract Title:

Carnosic acid attenuates acrylamide-induced retinal toxicity in zebrafish embryos.

Abstract Source:

Exp Eye Res. 2018 10 ;175:103-114. Epub 2018 Jun 18. PMID: 29928899

Abstract Author(s):

Aishah Albalawi, Reem Hasaballah A Alhasani, Lincoln Biswas, James Reilly, Saeed Akhtar, Xinhua Shu

Article Affiliation:

Aishah Albalawi

Abstract:

Acrylamide (ACR) is a water-soluble chemical used widely in industry, which can be formed in tobacco smoke and in starchy foods cooked at high temperatures. ACR is considered to be a neurotoxin, genotoxin and carcinotoxin. Previous studies reported that ACR-exposed workers and experimental animals exhibited visual function defects, although the underlying mechanisms have not been elucidated. In this study, we found that zebrafish embryos exposed to 1 mM and 2 mM ACR showed significantly increased reactive oxygen species (ROS), decreased expression of the antioxidant genes Sod1, Sod2, Catalase, Gpx1 and Nrf2, reduced activity of superoxide dismutase (SOD) and catalase, and elevated malondialdehyde (MDA), compared with control embryos. ACR exposure caused loss of both rod and cone photoreceptor cells through Caspase-3-dependent apoptotis. When embryos were simultaneously exposed to ACR and the natural antioxidative substance carnosic acid (CA), the presence of the latter (10 μM) markedly counteracted the above ACR-induced toxic effects. Our data suggest that CA can protect photoreceptor cells against ACR-induced oxidative damage and has a potential for neuroprotection of visual function in humans exposed to ACR.

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Sayer Ji
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