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Changes in c-Fos protein expression in telencephalic hemispheres of a neotropical fish Piaractus orinoquensis after exposure to a glyphosate-based herbicide
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Changes in c-Fos protein expression in telencephalic hemispheres of a neotropical fish Piaractus orinoquensis after exposure to a glyphosate-based herbicide
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Journal Article
Changes in c-Fos protein expression in telencephalic hemispheres of a neotropical fish Piaractus orinoquensis after exposure to a glyphosate-based herbicide
2025
Overview
Glyphosate-based herbicides (GBHs) can be found in waterbodies and may affect aquatic populations, resulting in physiological and behavioral impairments. In Colombia, white cachama (
) are frequently found in areas subjected to glyphosate aerial fumigation. This study aims to investigate changes in c-Fos protein expression in
telencephalic hemispheres after exposure to 0, 1, 5, and 10 mg/L glyphosate for 30, 60, and 90 min. For this purpose, 5 lm paraffin sections were obtained and used for c-Fos immunodetection. To define the effect of xenobiotics on c-Fos expression, nuclei were taken from the dorsal dorsal (Dd), dorsomedial (Dm), dorsal posterior (Dp), dorsolateral (Dl), ventral (Vv), dorsoventral (Vd), and ventrolateral (Vl) regions of
telencephalic hemispheres. Except for Dd nuclei, other nuclei showed an initial increase in c-Fos+ cells, followed by a progressive decrease toward values similar to those observed in unexposed individuals. In Dd nuclei, the initial tendency was toward a reduced number of c-Fosexpressing cells, followed by an increase in unexposed values. As changes in the number of cells containing c-Fos can be related to changes in neuronal activity, GBH exposure may potentially affect the fish's behavioral and sensorial performance, resulting in a reduced survival probability in its natural environment.
Publisher
Springer Nature B.V
Subject
/ Colombia
/ Exposure
/ Fish
/ Gene Expression Regulation - drug effects
/ Glycine - analogs & derivatives
/ neurons
/ Nuclei
/ Nucleus
/ Proteins
/ Proto-Oncogene Proteins c-fos - genetics
/ Proto-Oncogene Proteins c-fos - metabolism
/ Telencephalon - drug effects
