IHOP obesity


soluble receptor bound fraction of leptin.
Laimer M1, Ebenbichler CF, Kaser S, Sandhofer A, Weiss H, Nehoda H, Aigner F, Patsch JR.
Author information
Abstract
OBJECTIVE:
Soluble leptin receptor (sOB-R) represents the main binding site for leptin in human blood. The aim of this study was to investigate the relationship between leptin and soluble leptin receptor and the bound/free ratio after pronounced weight reduction.
RESEARCH METHODS AND PROCEDURES:
A total of 18 morbidly obese women participated in this prospective study. Subjects were examined for fat mass, leptin, and sOB-R concentrations before and 1 year after Swedish adjustable gastric banding.
RESULTS:
Anthropomorphic measures displayed a significant reduction of body mass index [(42.9 +/- 5.6 to 32.9 +/- 6.0 kg/m(2) (mean +/- SD)]. Fat mass decreased from 56.3 +/- 9.0 to 33.9 +/- 12.5 kg. Plasma leptin concentration decreased from 44.6 +/- 18.0 to 20.0 +/- 13.1 ng/mL (p < 0.001), whereas the sOB-R levels increased from 11.1 +/- 3.6 to 16.6 +/- 6.0 U/mL after weight-reducing surgery. Thus, the sOB-R bound fraction of leptin increased from 7% to 33%.
DISCUSSION:
This work demonstrates a relationship between weight loss, leptin, and sOB-R concentrations in vivo. During weight loss, leptin levels decreased, whereas sOB-R levels and the receptor bound fraction of leptin increased. Thus, sOB-R may negatively regulate free leptin.
PMID: 12105280 [PubMed – indexed for MEDLINE]
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About garyskeete

ASHWORTH MEDICINE-Professional Medical Assisting, Doctor of Science,Legal Assistant Diploma BSc Criminal Justice
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