Effects of in vitro exposure of perfluorooctanoic acid and monocrotophos on astroglia SVG p12 cells. Issue 9 (10th February 2021)

• Record Type: Journal Article
• Authors: Osemwegie, Odia; Butler, Landon; Subbiah, Seenivasan; Smith, Ernest
• Is Part Of: Journal of applied toxicology. Volume 41:Issue 9(2021)
• Page Start: 1380
• Page End: 1389
• Publication Date: 2021-02-10
• Subjects: glutamate -- monocrotophos -- perfluorooctanoic acid -- SVG p12; Toxicology -- Periodicals; Industrial toxicology -- Periodicals; Environmentally induced diseases -- Periodicals; Toxicology -- Periodicals; 615.9005
• DOI: 10.1002/jat.4129
• Languages: English
• ISSNs: 0260-437X

Abstract

Abstract: Glia cells provide supportive functions to the central nervous system and can be compromised by environmental contaminants. The primary objective of this study was to characterize the effects of in vitro exposure to perfluorooctanoic acid, a persistent environmental contaminant and/or monocrotophos (MCP), a neurotoxic organophosphate that is rapidly metabolized, to astroglia SVG p12 cells. The endpoints evaluated include cell viability, intracellular glutamate levels as a marker of astrocyte homeostasis function, differential gene expression for selected proteins, which include inflammatory markers (tachykinin), astrocytosis (nestin), S100B, and metabolism enzymes (CYP1A1). The results from cell viability revealed significant differences from the controls at some of the concentrations tested. Also, intracellular glutamate levels were elevated at the 10‐μM concentration for perfluorooctanoic acid (PFOA) as well as the 10‐μM PFOA/5‐μM MCP concentration. Gene expression results at 80‐μM PFOA concentration revealed a significant increase in the expression of S100B, tachykinin and CYP1A1. A combination of 10‐μM PFOA/20‐μM MCP caused a significant decrease in the expression of tachykinin. Gene expression for MCP exposures produced a decrease at the 20‐μM MCP concentration. Immunofluorescence results indicated an increase in nestin protein expression for the 20‐μM concentration of MCP, which contradicted the gene expression at the same concentration tested. The results indicate that toxicity to glia cells can compromise critical glia functions and could be implicated in neurodegenerative diseases. Abstract : Glia cells are supportive non‐neuronal cells that provide vital functions to the central nervous system and can be compromised from environmental contaminants. The results from this study reflected changes in viability, as well as physiological and molecular markers. The results indicate that toxicity to glia cells can compromise critical glia functions and in turn lead to progression of neurodegenerative conditions.