Back to Search
Start Over
Repeated ICV administration of oxyntomodulin causes a greater reduction in body weight gain than in pair-fed rats.
- Source :
-
American journal of physiology. Endocrinology and metabolism [Am J Physiol Endocrinol Metab] 2002 Dec; Vol. 283 (6), pp. E1173-7. Date of Electronic Publication: 2002 Jul 30. - Publication Year :
- 2002
-
Abstract
- Oxyntomodulin (OXM) is a product of proglucagon processing in the intestine and the central nervous system. We reported that intracerebroventricular (ICV) and intranuclear administration of OXM caused an inhibition of food intake in rats (Dakin CL, Gunn I, Small CJ, Edwards CM, Hay DL, Smith DM, Ghatei MA, and Bloom SR. Endocrinology 142: 4244-4250, 2001). In this study, we investigated the effect of twice-daily ICV administration of OXM, 1 nmol, for 7 days. A pair-fed control was included. These animals were restricted to the food intake of the OXM group but injected twice daily with saline. OXM-treated animals gained significantly less weight than either control group (day 8: OXM, 12.2 +/- 1.9 g vs. pair fed, 21.0 +/- 2.1 g; P < 0.005). OXM treatment caused a reduction in epididymal white adipose tissue (OXM, 1.13 +/- 0.03 g vs. pair fed, 1.29 +/- 0.04 g; P < 0.05) and interscapular brown adipose tissue (OXM, 0.15 +/- 0.01 g vs. pair fed, 0.18 +/- 0.01 g; P < 0.05) and increased core temperature compared with saline control, suggestive of enhanced energy expenditure. The food restriction-induced suppression in plasma TSH, seen in the pair-fed group, was prevented by OXM, potentially via increased release of hypothalamic TRH. In summary, ICV OXM causes reduced body weight gain and body adiposity following chronic administration.
- Subjects :
- Adipose Tissue drug effects
Adipose Tissue metabolism
Adipose Tissue, Brown drug effects
Adipose Tissue, Brown metabolism
Animals
Body Temperature drug effects
Body Temperature physiology
Cells, Cultured
Drug Administration Schedule
Eating drug effects
Eating physiology
Hypothalamus cytology
Hypothalamus drug effects
Hypothalamus metabolism
Injections, Intraventricular
Male
Matched-Pair Analysis
Oxyntomodulin
Rats
Rats, Wistar
Thyrotropin biosynthesis
Thyrotropin blood
Glucagon-Like Peptides administration & dosage
Weight Gain drug effects
Subjects
Details
- Language :
- English
- ISSN :
- 0193-1849
- Volume :
- 283
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- American journal of physiology. Endocrinology and metabolism
- Publication Type :
- Academic Journal
- Accession number :
- 12388165
- Full Text :
- https://doi.org/10.1152/ajpendo.00233.2002