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Abstract Title:

Glyphosate and its formulation Roundup impair pig oocyte maturation.

Abstract Source:

Sci Rep. 2020 Jul 20 ;10(1):12007. Epub 2020 Jul 20. PMID: 32686734

Abstract Author(s):

Marcella Spinaci, Chiara Nerozzi, Car Lo Tamanini, Diego Bucci, Giovanna Galeati

Article Affiliation:

Marcella Spinaci

Abstract:

Glyphosate, formulated as glyphosate-based herbicides (GBHs) including the best-known formulation Roundup, is the world's most widely used herbicide. During the last years, the growing and widespread use of GBHs has raised a great concern about the impact of environmental contamination on animal and human health including potential effect on reproductive systems. Using an in vitro model of pig oocyte maturation, we examined the biological impact of both glyphosate and Roundup on female gamete evaluating nuclear maturation, cytoplasmic maturation and developmental competence of oocytes, steroidogenic activity of cumulus cells as well as intracellular levels of glutathione (GSH) and ROS of oocytes. Our results indicate that although exposure to glyphosate and Roundup during in vitro maturation does not affect nuclear maturation and embryo cleavage, it does impair oocyte developmental competence in terms of blastocyst rate and cellularity. Moreover, Roundup at the same glyphosate-equivalent concentrations was shown to be more toxic than pure glyphosate, altering steroidogenesis and increasing oocyte ROS levels, thus confirming that Roundup adjuvants enhance glyphosate toxic effects and/or are biologically active in their side-effect and therefore should be considered and tested as active ingredients.

Study Type : Animal Study

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