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Acute effects of acylated and unacylated ghrelin on total and high molecular weight adiponectin inmorbidly obese subjects.
J Endocrinol Invest. 2011 Jun; 34(6):434-8.JE

Abstract

BACKGROUND

Energy homeostasis and body weight are regulated by a highly complex network involving the brain, the digestive tract, and white adipose tissue (WAT). Knowledge about signaling pathways connecting digestive tract and WAT is limited. Gut hormone ghrelin and adipokine adiponectin are both decreased in obesity and they share a potent effect on insulin sensitivity: both adiponectin and the combination of acylated (AG) and unacylated ghrelin (UAG) improve insulin sensitivity.

AIM

In the present study, we evaluated whether acute administration of UAG alone or combined with AG affects adiponectin concentrations.

SUBJECTS AND METHODS

Eight morbidly obese non-diabetic subjects were treated with either UAG 200 μg, UAG 100 μg + AG 100 μg (Comb), or placebo in 3 episodes in a double blind randomized cross-over design. Study medication was administered as single iv bolus injections at 09:00 h after an overnight fast. High molecular weight (HMW) and total adiponectin, glucose, insulin, and total ghrelin and AG were measured up to 1 h after administration.

RESULTS

HMW and total adiponectin concentrations did not change after administration of either UAG or Comb, nor were they different from placebo. Insulin concentrations decreased significantly after acute administration of Comb, reaching a minimum at 20 min: 58.2 ± 3.9% of baseline.

CONCLUSIONS

Acute iv administration of UAG and the combination of UAG and AG in morbidly obese non-diabetic subjects without overt diabetes does not affect total or HMW adiponectin concentrations, neither directly nor indirectly by changing insulin concentrations.

Authors+Show Affiliations

Division of Endocrinology, Department of Internal Medicine, Erasmus University Medical Centre, CA Rotterdam, The Netherlands. r.kiewiet@erasmusmc.nlNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

20959720

Citation

Kiewiet, R M., et al. "Acute Effects of Acylated and Unacylated Ghrelin On Total and High Molecular Weight Adiponectin Inmorbidly Obese Subjects." Journal of Endocrinological Investigation, vol. 34, no. 6, 2011, pp. 434-8.
Kiewiet RM, Hazell MJ, van Aken MO, et al. Acute effects of acylated and unacylated ghrelin on total and high molecular weight adiponectin inmorbidly obese subjects. J Endocrinol Invest. 2011;34(6):434-8.
Kiewiet, R. M., Hazell, M. J., van Aken, M. O., van der Weerd, K., Visser, J. A., Themmen, A. P., & van der Lely, A. J. (2011). Acute effects of acylated and unacylated ghrelin on total and high molecular weight adiponectin inmorbidly obese subjects. Journal of Endocrinological Investigation, 34(6), 434-8. https://doi.org/10.3275/7296
Kiewiet RM, et al. Acute Effects of Acylated and Unacylated Ghrelin On Total and High Molecular Weight Adiponectin Inmorbidly Obese Subjects. J Endocrinol Invest. 2011;34(6):434-8. PubMed PMID: 20959720.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Acute effects of acylated and unacylated ghrelin on total and high molecular weight adiponectin inmorbidly obese subjects. AU - Kiewiet,R M, AU - Hazell,M J, AU - van Aken,M O, AU - van der Weerd,K, AU - Visser,J A, AU - Themmen,A P N, AU - van der Lely,A J, Y1 - 2010/10/15/ PY - 2010/10/21/entrez PY - 2010/10/21/pubmed PY - 2014/11/14/medline SP - 434 EP - 8 JF - Journal of endocrinological investigation JO - J Endocrinol Invest VL - 34 IS - 6 N2 - BACKGROUND: Energy homeostasis and body weight are regulated by a highly complex network involving the brain, the digestive tract, and white adipose tissue (WAT). Knowledge about signaling pathways connecting digestive tract and WAT is limited. Gut hormone ghrelin and adipokine adiponectin are both decreased in obesity and they share a potent effect on insulin sensitivity: both adiponectin and the combination of acylated (AG) and unacylated ghrelin (UAG) improve insulin sensitivity. AIM: In the present study, we evaluated whether acute administration of UAG alone or combined with AG affects adiponectin concentrations. SUBJECTS AND METHODS: Eight morbidly obese non-diabetic subjects were treated with either UAG 200 μg, UAG 100 μg + AG 100 μg (Comb), or placebo in 3 episodes in a double blind randomized cross-over design. Study medication was administered as single iv bolus injections at 09:00 h after an overnight fast. High molecular weight (HMW) and total adiponectin, glucose, insulin, and total ghrelin and AG were measured up to 1 h after administration. RESULTS: HMW and total adiponectin concentrations did not change after administration of either UAG or Comb, nor were they different from placebo. Insulin concentrations decreased significantly after acute administration of Comb, reaching a minimum at 20 min: 58.2 ± 3.9% of baseline. CONCLUSIONS: Acute iv administration of UAG and the combination of UAG and AG in morbidly obese non-diabetic subjects without overt diabetes does not affect total or HMW adiponectin concentrations, neither directly nor indirectly by changing insulin concentrations. SN - 1720-8386 UR - https://www.unboundmedicine.com/medline/citation/20959720/Acute_effects_of_acylated_and_unacylated_ghrelin_on_total_and_high_molecular_weight_adiponectin_inmorbidly_obese_subjects_ L2 - https://link.springer.com/article/10.1007/BF03346709 DB - PRIME DP - Unbound Medicine ER -