| Asymmetric syncytial expression of GLUT9 splice variants in human term placenta and alterations in diabetic pregnancies. | |
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MedLine Citation:
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PMID: 20926839 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Glucose transport from the maternal to fetal side of the placenta is critical for fetal growth and development due to the absence of fetal gluconeogenesis. Human GLUT9, existing as 2 isoforms, is a novel member of the transporter family. This study investigated the localization and relative expression levels of these isoforms in the human term placenta from both control and diabetic patients. Placenta samples were collected from normal pregnancies and those complicated by maternal diabetes (White classifications A1, A2, and B). Antibodies specific for the different isoforms were used to detect expression. Both forms of the protein are expressed in syncytiotrophoblast cells. Subcellular fractionation revealed an asymmetrical expression pattern with GLUT9a on basal membranes, whereas GLUT9b localizes to microvillus membranes. Expression of both isoforms is significantly increased in placental tissue from diabetic pregnancies. Altered expression of GLUT9 in the placenta may play a role in the fetal pathophysiology associated with diabetes-complicated pregnancies. |
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Authors:
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Kristin P Bibee; Nicholas P Illsley; Kelle H Moley |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2010-10-06 |
Journal Detail:
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Title: Reproductive sciences (Thousand Oaks, Calif.) Volume: 18 ISSN: 1933-7205 ISO Abbreviation: Reprod Sci Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-23 Completed Date: 2011-04-11 Revised Date: 2013-05-27 |
Medline Journal Info:
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Nlm Unique ID: 101291249 Medline TA: Reprod Sci Country: United States |
Other Details:
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Languages: eng Pagination: 20-7 Citation Subset: IM |
Affiliation:
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Department of Obstetrics and Gynecology, Washington University School of Medicine, St Louis, MO 63110, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blotting, Western Female Fluorescent Antibody Technique Gene Expression* Glucose Transport Proteins, Facilitative / analysis, genetics* Humans Immunohistochemistry Microvilli / chemistry Placenta / chemistry, metabolism* Pregnancy Pregnancy in Diabetics / metabolism* Protein Isoforms / analysis, genetics* Trophoblasts / chemistry, metabolism*, ultrastructure |
| Grant Support | |
ID/Acronym/Agency:
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P30 DK056341-10/DK/NIDDK NIH HHS; R01 HD04390/HD/NICHD NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Glucose Transport Proteins, Facilitative; 0/Protein Isoforms; 0/SLC2A9 protein, human |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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