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Thymol-enriched diet alleviates the toxic impacts of zinc oxide nanoparticles on growth performance, blood biochemistry, oxidant/antioxidant status and stress-related genes and histology of liver and gills in Oreochromis niloticus
Faculty
Science
Year:
2023
Type of Publication:
ZU Hosted
Pages:
Authors:
Susan Attia Moawad
Staff Zu Site
Abstract In Staff Site
Journal:
Aquaculture Reports Elsevier
Volume:
Keywords :
Thymol-enriched diet alleviates , toxic impacts , zinc
Abstract:
Dietary natural components emerged as key supplements for protecting fish against aquatic pollutants. In this study, we explored the efficacy of thymol supplementation (1 or 2 g/kg diet) in alleviating the toxic effects induced by exposing Oreochromis niloticus to zinc oxide nanoparticles (ZON) at 1.14 mg/L (equivalent to 1/5th LC50) for 28 days. Relative to control, the fish treated with ZON showed a reduction in the survival rate and growth performance, with the highest zinc residues detected in the liver, followed by muscle and, finally, gills. Alterations were recorded in serum biochemistry reflecting ZON's hepatotoxicity and nephrotoxicity, along with reductions in growth hormone, T3 (triiodothyronine) and T4 (thyroxine). The intestinal amylase, lipase, and protease activities were suppressed with increases in the intestinal Aeromonas and total bacterial counts in the ZON-exposed group. Elevated tissue levels of MDA (malondialdehyde) and PC (protein carbonyl) content, with depletion of the SOD (superoxide dismutase) and CAT (catalase) activities, and GSH (reduced glutathione) levels were also noted in ZON-exposed group, in addition to upregulation of the hepatic HSP-70 (heat shock protein-70), Caspase-3, and P53 (Tumor suppressor protein). Moreover, histomorphological changes were recorded in the ZON-treated fish's liver and gills. Conversely, concomitant administration of thymol with ZON blunted these toxic impacts in a dose-specific manner. Based on these data, thymol could be an effective dietary supplement for stressed fish.
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Susan Attia Moawad, "A Comparative Morphological and Histological Study of the Olfactory Organ in Two Models of Bony Fishes (Mugil cephalus and Malapterurus electricus): A light and Electron microscopic study.", مجلة كلية العلوم, 2013
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Susan Attia Moawad, "strategy of Hepatic Metabolic Defects Induced by beclin1 Heterozygosity in Adult Zebrafish", china, 2020
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Susan Attia Moawad, "Dietary Supplementation of Nile Tilapia (Oreochromis niloticus) With Panax ginseng Essential Oil: Positive Impact on Animal Health and Productive Performance, and Mitigating Effects on Atrazine- Induced Toxicity", Frontiers, 2022
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Susan Attia Moawad, "Benefits of Chlorella vulgaris against Cadmium Chloride-Induced Hepatic and Renal Toxicities via Restoring the Cellular Redox Homeostasis and Modulating Nrf2 and NF-KB Pathways in Male Rats", MDPI, 2023
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Susan Attia Moawad, "In ovo protective effects of chicoric and rosmarinic acids against Thiacloprid-induced cytotoxicity, oxidative stress, and growth retardation on newly hatched chicks", Elsevier, 2023
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