Abstract Title:

Protective role of dark soy sauce against acrylamide-induced neurotoxicity in rats by antioxidative activity.

Abstract Source:

Toxicol Mech Methods. 2009 Jun;19(5):369-74. PMID: 19778214

Abstract Author(s):

Zhang Xichun, Zhang Min'ai


Dark soy sauce (DSS) exerts antioxidant activity in vitro or in vivo. To test the possibility of chemoprevention by such dietary supplements on acrylamide (ACR)-induced subacute toxicity, Sprague-Dawley male rats were administered DSS dissolved in water (0.5 ml/kgbw x d) for 2 weeks after, before or during ACR exposure (0.2 mg/L in distillate water). DSS significantly improved the body weight gain, relative brain weights, and the gait abnormalities of ACR-treated rats when DSS treated at the same time as ACR-exposure (p<0.05). DSS significantly improved the axonal degeneration, the ratio of myelinated nerves<3 microm in diameter, degree of central chromatolysis of the ganglion neurons in peripheral nerves, and numbers of SYP (+) aberrant dots per mm cortex in the cerebellar molecular layer of ACR-treated rats no matter before, after, or during ACR-exposure (p<0.05). DSS significantly decreased the malondialdehyde level and increased the superoxide dismutase activity in brain of ACR-treated rats when DSS treated during ACR-exposure (p<0.05). These findings suggest that DSS plays a protective role against ACR-developed neurotoxicity and, partly at least, through an anti-oxidative mechanism. And it is worthy to note that DSS treatment at the same time as ACR exposure plays a more effective protective role than before or after ACR exposure.

Study Type : Animal Study

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