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- W384183558 abstract "Lead (Pb) is a neurotoxic metal that is widely distributed in the environment. In experimental animals, chronic exposure to this neurotoxicant resulted in impaired synaptic plasticity and cognitive function. In this study, we examined the protective effects of vitamin C (ascorbic acid) against Pb exposure-induced impairment of long-term potentiation (LTP). Forty-four adult male Wistar rats were divided into six groups and subjected to the following treatments for three months: (1) vehicle (distilled water); (2) Pb; (3) ascorbic acid; (4) Pb + ascorbic acid; (5) Pb (two months) followed by ascorbic acid; and (6) ascorbic acid (one month) followed by Pb. After treatment, the population spike (PS) amplitude and slope of excitatory postsynaptic potentials (EPSP) were measured in the dentate gyrus(DG) of rats in vivo. Following these measurements, blood samples were collected for the following biochemical assays: malondialdehyde (MDA), total antioxidant capacity (TAC), and total oxidant status (TOS). There was a significant increase in plasma MDA and TOS in the Pb-intoxicated group compared to the control group. There was a significant increase in TAC levels in the ascorbic acid group. Our results also show that Pb exposure caused a decrease in the EPSP slope and PS amplitude when compared with the control group, whereas vitamin C increased these parameters. Co-administration of Pb with vitamin C inhibited the effects of Pb. These findings suggested that Pb exposure caused impairment in LTP, that may have been mediated through oxidative damage. Vitamin C ameliorated the Pb-induced impairment of synaptic plasticity in the DG via antioxidant activity." @default.
- W384183558 created "2016-06-24" @default.
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- W384183558 creator A5054597386 @default.
- W384183558 creator A5084771868 @default.
- W384183558 date "2015-07-01" @default.
- W384183558 modified "2023-09-25" @default.
- W384183558 title "Vitamin C reverses lead-induced deficits in hippocampal synaptic plasticity in rats" @default.
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