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Expression of intestinal trefoil factor in developing rat intestine
1Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029-6574, USA. jing.lin@n2mail.com
Biology of the Neonate
|July 8, 1999
Summary
Intestinal trefoil factor (TFF3) expression begins late in rat gestation and is low in newborns. This suggests TFF3 deficiency may contribute to necrotizing enterocolitis in premature infants.
Area of Science:
- Gastroenterology
- Developmental Biology
- Molecular Biology
Background:
- Intestinal trefoil factor (TFF3) is a peptide crucial for intestinal mucosal barrier maintenance and repair.
- Goblet cells secrete TFF3 at the intestinal mucosal surface.
Purpose of the Study:
- To investigate the developmental expression of TFF3 mRNA and protein in rat intestines.
- To understand the role of TFF3 in intestinal development and its potential link to necrotizing enterocolitis.
Main Methods:
- Northern blot analysis for TFF3 mRNA expression.
- Western blot analysis for TFF3 protein detection.
- Immunohistochemical staining for TFF3 localization and expression.
Main Results:
- Rat TFF3 mRNA was first detected on gestational day 17, with increased expression by gestational day 20 and postnatally.
- TFF3 protein was detected from gestational day 20 onwards, with further increases around weaning.
- Immature rats showed relatively deficient TFF3 expression.
Conclusions:
- Significant TFF3 expression initiates late in gestation in rats.
- TFF3 deficiency in immature rats may play a role in necrotizing enterocolitis development.
- TFF3 expression patterns suggest potential implications for premature infants.