Related Experiment Video
Updated: Apr 20, 2026
10:41
Germ Cell Transplantation and Testis Tissue Xenografting in Mice
Published on: February 6, 2012
30.8K
Phthalate esters affect maturation and function of primate testis tissue ectopically grafted in mice
Jose R Rodriguez-Sosa1, Alla Bondareva2, Lin Tang2
1Department of Comparative Biology & Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, PA 19348, United States.
Molecular and Cellular Endocrinology
|December 3, 2014
Summary
Phthalate esters like DBP and DEHP disrupt immature primate testis development and function. Even low-dose exposure can harm Sertoli cells and alter hormone production, impacting reproductive health.
Area of Science:
- Reproductive toxicology
- Endocrinology
- Primate reproductive biology
Background:
- Phthalates, such as Di-n-Butyl (DBP) and Di-(2-EthylHexyl) (DEHP), are common environmental contaminants leaching from consumer products.
- Exposure to phthalates is known to cause reproductive issues in male rodents.
- The effects of phthalates on the developing primate testis remain incompletely understood.
Purpose of the Study:
- To investigate the impact of DBP and DEHP exposure on the immature primate testis.
- To evaluate dose- and time-dependent effects on testicular development and function.
Main Methods:
- Testis fragments from immature rhesus macaques were xenografted to immune-deficient mice.
- Grafts were exposed to varying doses (0, 10, or 500 mg/kg) of DBP or DEHP for 14 or 28 weeks (DBP only).
- Gene expression, cell differentiation, and cell numbers were analyzed.
Main Results:
- DBP exposure at 500 mg/kg impaired tubule formation, germ cell differentiation, and reduced spermatogonia, while also decreasing steroidogenic gene expression.
- Lower dose DBP (10 mg/kg) reduced Sertoli cell numbers and increased inhibin B expression.
- DEHP exposure also negatively affected steroidogenic gene expression.
Conclusions:
- Long-term exposure to phthalate esters significantly affects primate testis development and Leydig cell function.
- Effects are dependent on the specific phthalate, dosage, and duration of exposure.
- These findings highlight potential risks to reproductive health from environmental phthalate exposure in primates.
