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Ziech 2022 Drug Chem Toxicol

From Bioblast
Publications in the MiPMap
Ziech CC, Rodrigues NR, Macedo GE, Gomes KK, Martins IK, Franco JL, Posser T (2022) Pre-imaginal exposure to mancozeb induces morphological and behavioral deficits and oxidative damage in Drosophila melanogaster. https://doi.org/10.1080/01480545.2022.2069802

Β» Drug Chem Toxicol [Epub ahead of print]. PMID: 35502483 Open Access

Ziech Cynthia Camila,  Rodrigues Nathane Rosa,  Macedo Giulianna Echeverria, Gomes Karen Kich,  Kemmerich Martins Illana,  Franco Jeferson Luis,  Posser Thais (2022) Drug Chem Toxicol

Abstract: Mancozeb (MZ), a manganese/zinc containing ethylene-bis-dithiocarbamate, is a broad-spectrum fungicide. Chronic exposure to MZ has been related to several organisms' neurological, hormonal, and developmental disorders. However, little is known about the post-natal effects of developmental exposure to MZ. In this study, Drosophila melanogaster was subjected to a pre-imaginal (eggs-larvae-pupae stage) model of exposure to MZ at 0.1 and 0.5 mg/mL. The emergence rate, body size, locomotor performance, sleep patterns, and molecular and biochemical parameters were evaluated in post-emerged flies. Results demonstrate that pre-imaginal exposure to MZ significantly impacted early emerged flies. Additionally, reduced progeny viability, smaller body size and delaying in emergence period, locomotor impairment, and prolonged sleep time were observed. Content of glucose, proteins, and triglycerides were altered, and the bioenergetics efficiency and oxidative phosphorylation at complex I were inhibited. mRNA stade state levels of genes responsive to stress, metabolism, and regulation of circadian cycle (Nrf2, p38, Hsp83, Akt1, GPDH, tor, per, tim, dILP2, and dILP6) were augmented, pointing out to stimulation of antioxidant defenses, insulin-dependent signaling pathway activation, and disruption of sleep regulation. These data were followed by increased lipid peroxidation and lower glutathione levels. In addition, the activity of catalase and glutathione-S-transferase were induced, whereas superoxide dismutase was inhibited. Together, these results demonstrate that developmental exposure to MZ formulation led to phenotype and behavioral alterations in young flies, possibly related to disruption of energetic metabolism, oxidative stress, and deregulation of genes implied in growth, sleep, and metabolism. β€’ Keywords: Fruit fly, Dithiocarbamate, Embryotoxicity, Mitochondrial bioenergetics, Oxidative stress β€’ Bioblast editor: Plangger M


Labels: MiParea: Respiration, Developmental biology, Pharmacology;toxicology 


Organism: Drosophila 




HRR: Oxygraph-2k 

2022-11, Labelling