Details

Autor(en) / Beteiligte

• Saleh, Shaimaa M.M.
• Mohamed, Ibrahim A.
• Fathy, Mohamed
• Sayed, Alaa El-Din H.

Titel

Neuro-hepatopathological changes in juvenile Oreochromis niloticus exposed to sublethal concentrations of commercial herbicides

Ist Teil von

• Environmental toxicology and pharmacology, 2022-07, Vol.93, p.103871-103871, Article 103871

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• The current study estimates the impact of different common herbicides on antioxidant defenses and histological structure of liver and spinal cord of juvenile tilapia. Eighty-four fish were divided into seven groups: group 1 fish acted as controls and the remaining fish were exposed to sublethal concentrations of acetochlor, bispyribac-sodium, bentazon, bensulfuron-methyl, halosulfuron-methyl, or quinclorac at sublethal concentrations 2.625, 0.800, 36.00, 2.50, 1.275, and 11.250 mg/l, respectively, for 96 h. Antioxidant parameters changed in response to some test herbicides and the greatest effects were caused by exposure to acetochlor and quinelorac for all antioxidant measurements. Prominent histological changes in liver tissue included loss of liver architecture and the appearance of fatty liver cells, necrotic areas, foci of leukocytic infiltration and many apoptotic cells. The most obvious changes in the spinal cord in all treated fish were degradation of myelinated white matter fibers with the emergence of empty spaces, large aggregation of pyknotic neuroglial nuclei, and damaged areas in the dorsal horn of gray matter. Collectively, the harmful effect of tested herbicides on antioxidant capacity and significant alterations in histological structures of liver and spinal cord of Oreochromis niloticus. [Display omitted] •Some herbicides were tested using antioxidant parameters of Juvenile Oreochromis niloticus.•Brain and liver tissue alterations were observed in all exposed groups.•The trend of damage was strong as acetochlor > bispyribac-sodium > quinclorac > bensulfuran-methyl > halosulfuran-methyl > bentazon.