Developmental Expression of the Neurotensin Gene in the Rat Liver
| Autor: | Dai H. Chung, X. Wang, B. M. Evers, K. Graves, Srinivasan Rajaraman, Courtney M. Townsend, James C. Thompson |
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| Rok vydání: | 1993 |
| Předmět: |
medicine.medical_specialty
Gene Expression Gestational Age In situ hybridization Malignant transformation chemistry.chemical_compound Fetus Internal medicine Gene expression medicine Animals Gene Neurotensin business.industry Age Factors Brain Nucleic Acid Hybridization Blotting Northern medicine.disease Peptide Fragments Rats Inbred F344 Rats Blot Endocrinology Animals Newborn Liver chemistry Hepatocellular carcinoma Surgery business Research Article |
| Zdroj: | Annals of Surgery. 218:183-188 |
| ISSN: | 0003-4932 |
| DOI: | 10.1097/00000658-199308000-00010 |
| Popis: | Objective This study determined whether the neurotensin gene is expressed during early development of the liver. Summary background data Neurotensin (NT), a gut tridecapeptide localized mainly to the distal small bowel and brain of adults, is an important hormone regulating gut motility, secretion and mucosal growth. Expression of NT peptide and the gene is found in fibrolamellar hepatocarcinomas, a variant of hepatocellular carcinoma, but not in the normal adult liver. Methods Northern and in situ hybridization techniques were used to determine expression of the neurotensin gene (NT/N) in the normal developing liver. Results NT/N is expressed in the fetal and early postnatal rat liver, but expression is repressed in the liver of the adult. In situ hybridization confirms the authors' Northern data and demonstrates a random distribution of NT/N expression in the fetal and 3-day postnatal liver. Conclusions The authors conclude from this study that NT/N is expressed during early development of the rat liver with subsequent repression in the adult. NT/N may be reexpressed with malignant transformation of the liver. |
| Databáze: | OpenAIRE |
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