In vitro Interference of a Glyphosate Commercial Formulation with the Stimulation of Ovarian Maturation by Progesterone, in the Estuarine Crab Neohelice granulata


This study was aimed at evaluating the possible interference of formulated glyphosate to the endocrine control of ovarian growth exerted by progesterone, in the estuarine crab Neohelice granulata. The addition of Roundup Ultramax® (0.2 mg/L of glyphosate in the incubation medium) was able to potentiate the stimulating effect of progesterone on total vitellogenic protein (Vg) content of ovarian pieces from crabs. Moreover, the sole addition of mifepristone (antagonist of progesterone receptors) was able to produce a decrement of the Vg content, which was not reverted by the addition of Roundup. A similar result was confirmed by means of histological analysis, which showed that mifepristone, both alone and in combination with Roundup, inhibited ovarian maturation, while Roundup alone increased it, in terms of a higher proportion of vitellogenic oocytes. We conclude that Roundup could stimulate the progesterone secretion exerted by the ovary and/or could act as a partial agonist of this hormone in the same tissue.

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This work was supported by Grants from ANPCYT (PICT 2016-0040), UBACYT 2020 (code 20020190100014BA), and CONICET (PIP 2015, code 11220150100100CO)

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Correspondence to Enrique M. Rodríguez.

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Canosa, I.S., Silveyra, G.R., Lonné, M.N. et al. In vitro Interference of a Glyphosate Commercial Formulation with the Stimulation of Ovarian Maturation by Progesterone, in the Estuarine Crab Neohelice granulata. Bull Environ Contam Toxicol (2021).

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  • Glyphosate
  • Estuarine crabs
  • Ovarian growth
  • Vitellogenic proteins
  • Progesterone