2025, Cilt 41, e0453 |
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The Potential Protective Effects of Quercetin Treatment on Hippocampal Tissue of Wistar Rats Exposed to Cadmium |
Mehmet Ozsan1, Ihsan Kisadere2, Ilknur Undag3, Nurcan Donmez4, Hasan Huseyin Donmez3 |
1Niğde Ömer Halisdemir University, Faculty of Medicine, Department of Physiology, Niğde, Türkiye 2Balıkesir University, Faculty of Veterinary Medicine, Department of Physiology, Balıkesir, Türkiye 3Selçuk University, Faculty of Veterinary Medicine, Department of Histology and Embryology, Konya, Türkiye 4Selçuk University, Faculty of Veterinary Medicine, Department of Physiology, Konya, Türkiye |
Keywords: Cadmium neurotoxicity, Cytokine modulation, Hippocampal oxidative stress, Neuroprotection, Quercetin |
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This study aimed to assess the neuroprotective potential of quercetin (Q) against
cadmium (Cd)-induced toxicity by evaluating its impact on antioxidant enzyme
activities, cytokine profiles, neuronal survival, and histopathological alterations
in the hippocampal tissue of rats. Twenty four healthy male Wistar albino rats
were randomly assigned into four groups: control (C; n = 6), cadmium (Cd; n
= 6), quercetin (Q; n = 6), and cadmium + quercetin (Cd+Q; n = 6). CdCl? was
administered subcutaneously at 4 mg/kg/day for three days to the Cd and Cd+Q
groups. Simultaneously, quercetin was administered intraperitoneally at 50 mg/
kg/day to the Q and Cd+Q groups. The hippocampal tissues were collected posttreatment
for biochemical, histopathological, and cellular analyses. Cadmium
exposure led to oxidative stress, elevated pro-inflammatory cytokines, suppressed
antioxidant defenses, and neuronal degeneration in the hippocampus. Quercetin
treatment partially mitigated these effects by enhancing antioxidant markers (GSH,
SOD), modulating cytokine levels (notably IL-1), and preserving neuronal integrity,
particularly in the CA1, CA2, CA3, and dentate gyrus regions (p < 0.05). These
findings suggest that quercetin confers partial neuroprotection against cadmiuminduced
hippocampal damage through its antioxidative and anti-inflammatory
properties. While not entirely preventive, quercetin may serve as a supportive
therapeutic agent in countering heavy metal-induced neurotoxicity.
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