Molecular Human Reproduction, Vol. 6, No. 4, 337-343,
April 2000
© 2000 European Society of Human Reproduction and Embryology
Embryo development |
Leukaemia inhibitory factor in the endometrium of the common marmoset Callithrix jacchus: localization, expression and hormonal regulation
Primate Biology Division, Primate Biology Division, Cell Biology Division, Primate Biology Division, Institute for Research in Reproduction (ICMR), Jehangir Merwanji Street, Parel, Mumbai 400 012, India
Abstract
In the present study, changes in the immunohistochemical localization of leukaemia inhibitory factor (LIF) in the endometrium during various phases of ovarian cyclicity of the common marmoset have been reported. LIF was absent during the early and late follicular phases. LIF was observed mainly in the cytoplasm of the endometrial glands during the early luteal phase, reached maximum intensity during the mid-luteal phase and declined again during late luteal phase. In-situ hybridization also showed a similar cyclic pattern in the expression of LIF. Stromal cells only showed signals for LIF during the mid-luteal phase. In ovariectomized marmosets, graded dosages of oestradiol alone failed to induce the appearance of LIF protein. Progesterone treatment following oestradiol priming, however, induced distinct glandular localization of LIF, indicating that LIF is a progesterone-dependent protein. Thus endometrial LIF is under maternal control and is secreted in response to the increased progesterone concentrations in circulation. It is possible that high concentrations of LIF during mid-luteal phase may prepare the endometrium for blastocyst implantation in marmosets.
cyclicity/endometrium/LIF/localization/regulation
Notes
1 To whom correspondence should be addressed
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