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Conference Paper: Effect of the mode of conception on incidences of apoptotic and proliferative cells in full term human placentas

TitleEffect of the mode of conception on incidences of apoptotic and proliferative cells in full term human placentas
Authors
Issue Date2003
PublisherBioScientifica Ltd. The Journal's web site is located at http://www.endocrine-abstracts.org/default.htm
Citation
The 194th Meeting of the Society for Endocrinology and Society for Endocrinology joint with Diabetes UK Endocrinology and Diabetes Day, London, UK., 3-5 November 2003. In Endocrine Abstracts, 2003, v. 6 How to Cite?
AbstractOBJECTIVES: To compare the cell dynamics of term placental tissue in pregnancies conceived by in-vitro fertilization (IVF) and embryo transfer with spontaneous pregnancies. METHODS: Placental samples were obtained from singleton term IVF pregnancies (n=25) and singleton term spontaneous pregnancies (n=30). Ethical approval was obtained from the Faculty of Medicine, The University of Hong Kong. The incidence of apoptotic and proliferative cells was determined by the TUNEL method and immunohistochemistry for Ki-67 antigen. RESULTS: In IVF group maternal age [36(26-40)] was significantly (p<0.01) greater than in the spontaneous pregnancies [32(20-38)]. There was no difference in maternal-height, pre-pregnancy weight, weight gain, gestational age at delivery, placental weight and infant birthweight between the two groups. The TUNEL-positive cells were principally syncytiotrophoblast with clustering of the nuclei. Incidence of TUNEL-positive cells in IVF group was [0.15%(0.02-0.87)] similar to that in the spontaneous group [0.13%(0.00-0.68)]. Ki-67 positive index in IVF and spontaneous pregnancies was cytotrophoblast 0.51%(0.02%-2.50%) vs 0.25%(0.04% - 0.92%), Stroma 0.11% (0.02% - 0.30 %) vs 0.05% (0.00% - 0.14%) and endothelial cells 0.20%(0.01%-1.51%) vs 0.02% (0.00% -0.12%) of the respective cell type. The incidence of each placental cell type, stained Ki-67 positive was significantly higher (p<0,05) in IVF placentas (p<0.05, Mann-Whitney U test). Results are expressed as median (range). CONCLUSION: The results denote distinct differences in cell dynamics between IVF and control pregnancies. However, the cellular and molecular mechanisms mediating changes in the placenta of IVF conceptions remain to be determined.
Persistent Identifierhttp://hdl.handle.net/10722/106431
ISSN

 

DC FieldValueLanguage
dc.contributor.authorBasir, GS-
dc.contributor.authorCheung, PT-
dc.contributor.authorCheung, ANY-
dc.contributor.authorLao, TTH-
dc.date.accessioned2010-09-25T23:15:28Z-
dc.date.available2010-09-25T23:15:28Z-
dc.date.issued2003-
dc.identifier.citationThe 194th Meeting of the Society for Endocrinology and Society for Endocrinology joint with Diabetes UK Endocrinology and Diabetes Day, London, UK., 3-5 November 2003. In Endocrine Abstracts, 2003, v. 6-
dc.identifier.issn1470-3947-
dc.identifier.urihttp://hdl.handle.net/10722/106431-
dc.description.abstractOBJECTIVES: To compare the cell dynamics of term placental tissue in pregnancies conceived by in-vitro fertilization (IVF) and embryo transfer with spontaneous pregnancies. METHODS: Placental samples were obtained from singleton term IVF pregnancies (n=25) and singleton term spontaneous pregnancies (n=30). Ethical approval was obtained from the Faculty of Medicine, The University of Hong Kong. The incidence of apoptotic and proliferative cells was determined by the TUNEL method and immunohistochemistry for Ki-67 antigen. RESULTS: In IVF group maternal age [36(26-40)] was significantly (p<0.01) greater than in the spontaneous pregnancies [32(20-38)]. There was no difference in maternal-height, pre-pregnancy weight, weight gain, gestational age at delivery, placental weight and infant birthweight between the two groups. The TUNEL-positive cells were principally syncytiotrophoblast with clustering of the nuclei. Incidence of TUNEL-positive cells in IVF group was [0.15%(0.02-0.87)] similar to that in the spontaneous group [0.13%(0.00-0.68)]. Ki-67 positive index in IVF and spontaneous pregnancies was cytotrophoblast 0.51%(0.02%-2.50%) vs 0.25%(0.04% - 0.92%), Stroma 0.11% (0.02% - 0.30 %) vs 0.05% (0.00% - 0.14%) and endothelial cells 0.20%(0.01%-1.51%) vs 0.02% (0.00% -0.12%) of the respective cell type. The incidence of each placental cell type, stained Ki-67 positive was significantly higher (p<0,05) in IVF placentas (p<0.05, Mann-Whitney U test). Results are expressed as median (range). CONCLUSION: The results denote distinct differences in cell dynamics between IVF and control pregnancies. However, the cellular and molecular mechanisms mediating changes in the placenta of IVF conceptions remain to be determined.-
dc.languageeng-
dc.publisherBioScientifica Ltd. The Journal's web site is located at http://www.endocrine-abstracts.org/default.htm-
dc.relation.ispartofEndocrine Abstracts-
dc.titleEffect of the mode of conception on incidences of apoptotic and proliferative cells in full term human placentas-
dc.typeConference_Paper-
dc.identifier.emailCheung, PT: ptcheung@hku.hk-
dc.identifier.emailCheung, ANY: anycheun@hku.hk-
dc.identifier.emailLao, TTH: laotth@hkucc.hku.hk-
dc.identifier.authorityCheung, PT=rp00351-
dc.identifier.authorityCheung, ANY=rp00542-
dc.identifier.hkuros87750-
dc.identifier.volume6-
dc.publisher.placeUnited Kingdom-

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