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Oxytocin and oxytocin-receptor mRNA expression in the human gastrointestinal tract: A polymerase chain reaction study
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Clinical Microbiology . Östergötlands Läns Landsting, Centre for Laboratory Medicine, Department of Molecular Biological Techniques.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Cell Biology.
Department of Internal Medicine, University Hospital Malmö, S-205 02 Malmö, Sweden.
Department of Internal Medicine, University Hospital Malmö, S-205 02 Malmö, Sweden.
2004 (English)In: Regulatory Peptides, ISSN 0167-0115, Vol. 119, no 1-2, 39-44 p.Article in journal (Refereed) Published
Abstract [en]

Background/aim: Oxytocin (OT) has a wide range of effects throughout the body. However, the role of OT on the gastrointestinal (GI) tract has to be settled. So far, the few studies performed reveal no conclusive results. The aim of this study was to examine the expression of OT and OT-receptor mRNA in the human GI tract. Material and methods: Full-thickness biopsies from all segments of the GI tract and the gallbladder were collected during operations at the Department of Surgery, Malmö University Hospital. Biopsies were taken and put immediately into fluid nitrogen and stored at -70°C until total RNA was extracted after mechanical tissue homogenization. Subsequently, poly A + mRNA was isolated from the total RNA extract using an automated nucleic acid extractor and converted into single-stranded cDNA. PCR amplifications were carried out using gene-specific OT and OT-receptor primers. The specificity of the PCR amplicons was further confirmed by Southern blot analyses using gene specific OT and OT-receptor hybridization probes. Results: Expression of OT and OT-receptor mRNA was detected in nearly all segments of the GI tract analyzed. In most of the biopsy specimens analyzed, co-expression of both OT and OT-receptor mRNA appeared to take place. Conclusion: The present study demonstrates that OT and OT-receptor mRNAs are expressed throughout the GI tract. A possible physiological and/or pathophysiological role of OT and OT-receptor expression in the human GI tract and the cellular location of its expression remain to be shown. © 2004 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2004. Vol. 119, no 1-2, 39-44 p.
Keyword [en]
Gastrointestinal tract, Improved mRNA isolation, mRNA expression, Oxytocin, Oxytocin receptor, RT-PCR
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-45710DOI: 10.1016/j.regpep.2003.12.017OAI: oai:DiVA.org:liu-45710DiVA: diva2:266606
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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Monstein, Hans-JurgGrahn, Niclas

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