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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Abnormal in vitro development of ovarian follicles explanted from mice exposed to tetrachlorvinphos.

A system of mouse ovarian follicle culture in which follicles can be grown from a preantral stage of development through antral formation has been developed and modified recently by Nayudu and colleagues. Follicles have been shown to grow in this culture system at a relatively constant rate and show responsiveness to LH at the end of the culture by ovulation of mature oocytes. Reported here are the distinctly different in vitro growth patterns of follicles explanted from 22- to 24-day-old mice during a period when the colony was being treated for skin parasites with tetrachlorvinphos (TCVP) (Rabond). There is to date no information on the effects of this compound on the mammalian female reproductive system. For follicles from the TCVP treated group, the duration of growth as intact follicles was markedly reduced in comparison to mice of the same strain and source not treated with TCVP. In the treated group, premature termination of follicular growth was also associated with the spontaneous expulsion of oocytes with immature nuclei and without cumulus cells. For those follicles from treated mice that did remain in culture until the day luteinizing hormone was given, the ovulatory response was poor and the maturation response of the oocytes was low in comparison with the follicles from untreated mice. The effect of the treatment on the follicles was further characterized by obvious differences in the patterns of growth. Follicles in the untreated group grew in a linear pattern at around 25 microns/day; a single phase, fast pattern for the whole culture period.(ABSTRACT TRUNCATED AT 250 WORDS)[1]


  1. Abnormal in vitro development of ovarian follicles explanted from mice exposed to tetrachlorvinphos. Nayudu, P.L., Kiesel, P.S., Nowshari, M.A., Hodges, J.K. Reprod. Toxicol. (1994) [Pubmed]
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