Phthalate esters affect maturation and function of primate testis tissue ectopically grafted in mice

Jose R. Rodriguez-Sosa, Alla Bondareva, Lin Tang, Gleide F. Avelar, Krysta M. Coyle, Mark Modelski, Whitney Alpaugh, Alan J Conley, Katherine Wynne-Edwards, Luiz R. França, Stuart A Meyers, Ina Dobrinski

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Di-n-Butyl (DBP) and Di-(2-EthylHexyl) (DEHP) phthalates can leach from daily-use products resulting in environmental exposure. In male rodents, phthalate exposure results in reproductive effects. To evaluate effects on the immature primate testis, testis fragments from 6-month-old rhesus macaques were grafted subcutaneously to immune-deficient mice, which were exposed to 0, 10, or 500 mg/kg of DBP or DEHP for 14 weeks or 28 weeks (DBP only). DBP exposure reduced the expression of key steroidogenic genes, indicating that Leydig cell function was compromised. Exposure to 500 mg/kg impaired tubule formation and germ cell differentiation and reduced numbers of spermatogonia. Exposure to 10 mg/kg did not affect development, but reduced Sertoli cell number and resulted in increased expression of inhibin B. Exposure to DEHP for 14 week also affected steroidogenic genes expression. Therefore, long-term exposure to phthalate esters affected development and function of the primate testis in a time and dosage dependent manner.

Original languageEnglish (US)
Pages (from-to)89-100
Number of pages12
JournalMolecular and Cellular Endocrinology
Volume398
Issue number1-2
DOIs
StatePublished - Dec 1 2014

Keywords

  • Non-human primates
  • Phthalates
  • Spermatogenesis
  • Steroidogenesis
  • Testis
  • Testis development

ASJC Scopus subject areas

  • Endocrinology
  • Molecular Biology
  • Biochemistry

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  • Cite this

    Rodriguez-Sosa, J. R., Bondareva, A., Tang, L., Avelar, G. F., Coyle, K. M., Modelski, M., Alpaugh, W., Conley, A. J., Wynne-Edwards, K., França, L. R., Meyers, S. A., & Dobrinski, I. (2014). Phthalate esters affect maturation and function of primate testis tissue ectopically grafted in mice. Molecular and Cellular Endocrinology, 398(1-2), 89-100. https://doi.org/10.1016/j.mce.2014.10.004