Secretion and Dipeptidyl Peptidase-4-Mediated Metabolism of Incretin Hormones after a Mixed Meal or Glucose Ingestion in Obese Compared to Lean, Nondiabetic Men.
(2010) In The Journal of clinical endocrinology and metabolism 95. p.872-878- Abstract
- Context: Glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are cleaved by dipeptidyl peptidase-4 (DPP-4); plasma activity of DPP-4 may be increased in obesity. The impact of this increase on incretin hormone secretion and metabolism is not known. Objective: The aim of the study was to assess incretin hormone secretion and degradation in lean and obese nondiabetic subjects. Design, Settings, and Participants: We studied the ingestion of a mixed meal (560 kcal) or oral glucose (2 g/kg) in healthy lean (n = 12; body mass index, 20-25 kg/m(2)) or obese (n = 13; body mass index, 30-35 kg/m(2)) males at a University Clinical Research Unit. Main Outcome Measures: We measured the area under the curve of plasma... (More)
- Context: Glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are cleaved by dipeptidyl peptidase-4 (DPP-4); plasma activity of DPP-4 may be increased in obesity. The impact of this increase on incretin hormone secretion and metabolism is not known. Objective: The aim of the study was to assess incretin hormone secretion and degradation in lean and obese nondiabetic subjects. Design, Settings, and Participants: We studied the ingestion of a mixed meal (560 kcal) or oral glucose (2 g/kg) in healthy lean (n = 12; body mass index, 20-25 kg/m(2)) or obese (n = 13; body mass index, 30-35 kg/m(2)) males at a University Clinical Research Unit. Main Outcome Measures: We measured the area under the curve of plasma intact (i) and total (t) GIP and GLP-1 after meal ingestion and oral glucose. Results: Plasma DPP-4 activity was higher in the obese subjects (38.5 +/- 3.0 vs. 26.7 +/- 1.6 mmol/min . mul; P = 0.002). Although GIP secretion (AUCtGIP) was not reduced in obese subjects after meal ingestion or oral glucose, AUCiGIP was lower in obese subjects (8.5 +/- 0.6 vs. 12.7 +/- 0.9 nmol/liter x 300 min; P < 0.001) after meal ingestion. GLP-1 secretion (AUCtGLP-1) was reduced in obese subjects after both meal ingestion (7.3 +/- 0.9 vs. 10.0 +/- 0.6 nmol/liter x 300 min; P = 0.022) and oral glucose (6.6 +/- 0.8 vs. 9.6 +/- 1.1 nmol/liter x 180 min; P = 0.035). iGLP-1 was reduced in parallel to tGLP-1. Conclusions: 1) Release and degradation of the two incretin hormones show dissociated changes in obesity: GLP-1 but not GIP secretion is lower after meal ingestion and oral glucose, whereas GIP but not GLP-1 metabolism is increased after meal ingestion. 2) Increased plasma DPP-4 activity in obesity is not associated with a generalized augmented incretin hormone metabolism. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1523610
- author
- Carr, Richard D ; Larsen, Marianne O ; Jelic, Katarina ; Lindgren, Ola LU ; Vikman, Jenny LU ; Holst, Jens J ; Deacon, Carolyn F and Ahrén, Bo LU
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of clinical endocrinology and metabolism
- volume
- 95
- pages
- 872 - 878
- publisher
- Oxford University Press
- external identifiers
-
- wos:000274298200052
- pmid:20008019
- scopus:76149140857
- pmid:20008019
- ISSN
- 1945-7197
- DOI
- 10.1210/jc.2009-2054
- language
- English
- LU publication?
- yes
- id
- c0209e61-f840-45f9-8faf-0c4ffcb142d9 (old id 1523610)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/20008019?dopt=Abstract
- date added to LUP
- 2016-04-04 09:44:37
- date last changed
- 2024-02-11 15:11:19
@article{c0209e61-f840-45f9-8faf-0c4ffcb142d9,
abstract = {{Context: Glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are cleaved by dipeptidyl peptidase-4 (DPP-4); plasma activity of DPP-4 may be increased in obesity. The impact of this increase on incretin hormone secretion and metabolism is not known. Objective: The aim of the study was to assess incretin hormone secretion and degradation in lean and obese nondiabetic subjects. Design, Settings, and Participants: We studied the ingestion of a mixed meal (560 kcal) or oral glucose (2 g/kg) in healthy lean (n = 12; body mass index, 20-25 kg/m(2)) or obese (n = 13; body mass index, 30-35 kg/m(2)) males at a University Clinical Research Unit. Main Outcome Measures: We measured the area under the curve of plasma intact (i) and total (t) GIP and GLP-1 after meal ingestion and oral glucose. Results: Plasma DPP-4 activity was higher in the obese subjects (38.5 +/- 3.0 vs. 26.7 +/- 1.6 mmol/min . mul; P = 0.002). Although GIP secretion (AUCtGIP) was not reduced in obese subjects after meal ingestion or oral glucose, AUCiGIP was lower in obese subjects (8.5 +/- 0.6 vs. 12.7 +/- 0.9 nmol/liter x 300 min; P < 0.001) after meal ingestion. GLP-1 secretion (AUCtGLP-1) was reduced in obese subjects after both meal ingestion (7.3 +/- 0.9 vs. 10.0 +/- 0.6 nmol/liter x 300 min; P = 0.022) and oral glucose (6.6 +/- 0.8 vs. 9.6 +/- 1.1 nmol/liter x 180 min; P = 0.035). iGLP-1 was reduced in parallel to tGLP-1. Conclusions: 1) Release and degradation of the two incretin hormones show dissociated changes in obesity: GLP-1 but not GIP secretion is lower after meal ingestion and oral glucose, whereas GIP but not GLP-1 metabolism is increased after meal ingestion. 2) Increased plasma DPP-4 activity in obesity is not associated with a generalized augmented incretin hormone metabolism.}},
author = {{Carr, Richard D and Larsen, Marianne O and Jelic, Katarina and Lindgren, Ola and Vikman, Jenny and Holst, Jens J and Deacon, Carolyn F and Ahrén, Bo}},
issn = {{1945-7197}},
language = {{eng}},
pages = {{872--878}},
publisher = {{Oxford University Press}},
series = {{The Journal of clinical endocrinology and metabolism}},
title = {{Secretion and Dipeptidyl Peptidase-4-Mediated Metabolism of Incretin Hormones after a Mixed Meal or Glucose Ingestion in Obese Compared to Lean, Nondiabetic Men.}},
url = {{http://dx.doi.org/10.1210/jc.2009-2054}},
doi = {{10.1210/jc.2009-2054}},
volume = {{95}},
year = {{2010}},
}