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Aberrant Sphingolipid Metabolism in the Human Fallopian Tube with Ectopic Pregnancy.
MedLine Citation:
PMID:  23881382     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Sphingosine 1-phosphate (S1P), a product of sphingomyelin metabolism, is generated via phosphorylation of sphingosine by sphingosine kinases (SphK). It acts via a family of G protein-coupled receptors or as an intracellular second messenger for agonists acting through the S1P receptors (S1P1-5). In our study, the expression of SphK1 and S1P1 was identified by immunohistochemistry and immunoblot. The concentration of S1P was measured using ELISA. The spontaneous contraction of isolated fallopian tube strips was determined by tension recording. Our results showed that SphK1 and S1P1 were localized in the fallopian tube epithelial cells. In addition, smooth muscle cells also contained S1P1. Compared with the intrauterine pregnancy group, SPHK1 and S1P1 were overexpressed in ectopic pregnancy. However, the S1P concentration within the human oviduct from ectopic pregnancy subjects was largely reduced than that from normal pregnancy subject. The results from tension recording indicated that exogenous and intracellularly generated S1P can regulate the spontaneous contraction of oviduct isolated from rats and human. In conclusion, the sphingolipid metabolism signal pathway functionally existed in the human fallopian tube. Aberrant sphingolipid metabolism in the human fallopian tube may be involved in ectopic pregnancy.
Authors:
Xiaolin Gao; Nannan Ning; Beihua Kong; Yongping Xu; Hui Xu; Chengjun Zhou; Su Li; Yi Shao; Jianqing Qiu; Jingxin Li
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-7-24
Journal Detail:
Title:  Lipids     Volume:  -     ISSN:  1558-9307     ISO Abbreviation:  Lipids     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-7-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0060450     Medline TA:  Lipids     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Obstetrics and Gynecology, Second Hospital, Shandong University, Jinan, People's Republic of China.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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