Mol. Hum. Reprod. Advance Access originally published online on January 29, 2004
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Molecular Human Reproduction, Vol. 10, No. 3, pp. 149-154, 2004
© European Society of Human Reproduction and Embryology 2004
Surfactant protein D in the female genital tract
1Immunology and Microbiology, Institute of Medical Biology, University of Southern Denmark, Winsloewparken 21, DK-5000 Odense C, 2Department of Gynaecology and Obstetrics and 3Department of Pathology, Odense University Hospital, 5000 Odense C, Denmark
4 To whom correspondence should be addressed. e-mail: uholmskov{at}health.sdu.dk
Surfactant protein D (SP-D) plays a role in innate immunity against various pathogens and in vivo studies have demonstrated that SP-D also has anti-inflammatory properties. SP-D was originally demonstrated in alveolar type II cells, but recent studies have shown extrapulmonary expression of SP-D indicating a systemic role for the protein. This study describes the presence of SP-D in the female genital tract, the placenta and in amniotic fluid using immunohistochemistry and enzyme-linked immunosorbent assay. SP-D was observed in cells lining surface epithelium and secretory glands in the vagina, cervix, uterus, fallopian tubes and ovaries. In the placenta, SP-D was seen in all villous and extravillous trophoblast subpopulations. Endometrial presence of SP-D in non-pregnant women varied according to stage of the menstrual cycle and was up-regulated towards the secretory phase. It is suggested that endometrial SP-D may prevent intrauterine infection at the time of implantation and during pregnancy.
Key words: Key words: female genital tract/immunohistochemistry/inflammation/placenta/surfactant protein D
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