Toxicological impact of organophosphorus Chlorpyrifos 48%EC pesticide on hemocytes, biochemical disruption, and molecular changes in Biomphalaria alexandrina snails

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Ibrahim A.M.; Hussein A.A.A.

Journal: Pesticide Biochemistry and Physiology

Publisher: Academic Press Inc.

Publication Date: August 2022

Volume / Issue: Volume 186

Article No.: 105154

ISSN: 483575

DOI: 10.1016/j.pestbp.2022.105154

Scopus: View on Scopus

PubMed: 35973759

Document Type: Article

Authors and Affiliations

Ibrahim A.M., Medical Malacology Department, Theodor Bilharz Research Institute, Giza, Egypt; Hussein A.A.A., Medical Malacology Department, Theodor Bilharz Research Institute, Giza, Egypt

Abstract

Organophosphorus pesticides like Chlorpyrifos 48%EC were widely used to control agricultural pests. The present study aimed to evaluate the toxic effects of Chlorpyrifos 48%EC on B. alexandrina snails, the intermediate host of Schistosoma mansoni. After exposure of snails to serial concentrations to determine the LC50, thirty snails for each sublethal concentration (LC10 2.1 and LC25 5.6 mg/l) in each group were exposed for 24 h followed by another 24 h for recovery. After recovery random samples were collected from hemolymph and tissue to measure the impacts on Phagocytic index, histological, biochemical, and molecular parameters. The current results showed a toxic effect of Chlorpyrifos 48%EC on adult B. alexandrina snails after 24 h of exposure at LC50 9.6 mg/l. After exposure to the sub-lethal concentrations of this pesticide, it decreased the total number of hemocytes and the percentage of small cells, while increased the percentage of hyalinocytes. The granulocyte percentage was increased after exposure to LC10, while after LC25, it was decreased compared to the control group. Also, the light microscopical examination showed that some granulocytes have plenty of granules, vacuoles and filopodia. Some hyalinocytes were contained shrinked nuclei, incomplete cell division and forming pseudopodia. Besides, the phagocytic index of hemocytes was significantly increased than control in all treated groups. Also, these sub-lethal concentrations increased MDA and SOD activities, while, tissue NO, GST and TAC contents were significantly decreased after exposure. Levels of Testosterone (T) and Estradiol (E) were increased significantly after exposure compared with control group. The present results showed that the concentration of DNA and RNA was highly decreased after exposure to LC10, 25 than the control group. Therefore, B. alexandrina snails could be used as a bio monitor of the chemical pollution. Besides, this pesticide could reduce the transmission of schistosomiasis as it altered the biological system of these snails. © 2022 Elsevier Inc.

Keywords

Biochemical changes; Biomphalaria alexandrina; Chlorpyrifos 48%EC; Genotoxic effect; Hemocytes; Phagocytic index; Animals; Biomphalaria; Chlorpyrifos; Molluscacides; Organophosphorus Compounds; Pesticides; molluscacide; organophosphorus compound; pesticide; animal; blood cell; genetics

Citation Information

Scopus Citations: 23

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