Ghrelin Levels Correlate with Insulin Levels, Insulin Resistance, and High-Density Lipoprotein Cholesterol, but Not with Gender, Menopausal Status, or Cortisol Levels in Humans

Jonathan Purnell, David S. Weigle, Patricia Breen, David E. Cummings

Research output: Contribution to journalArticle

225 Citations (Scopus)

Abstract

The gut peptide, ghrelin, may participate in the control of energy homeostasis and pituitary hormone secretion in humans, stimulating both food intake and, at pharmacological doses, ACTH and cortisol secretion. Meal consumption and weight loss regulate ghrelin levels, but less is known about the relationship of ghrelin to body composition, aging, menopausal status, and lipid metabolism. Therefore, 60 adult men and women of widely varying ages and weights were characterized in terms of body composition and levels of ghrelin, glucose, insulin, lipids, and cortisol. Fasting ghrelin levels correlated positively with age and negatively with BMI and fat cell size, but were not related to fat mass, intraabdominal fat, or lean mass. Fasting ghrelin levels correlated most strongly with insulin levels (r = -0.39; P = 0.002), insulin resistance as determined by the quantitative insulin sensitivity check index (r = 0.38; P = 0.003), and high-density lipoprotein cholesterol levels (r = 0.33; P = 0.009). Meal-induced ghrelin suppression correlated with the postprandial rise in insulin (r = 0.39; P <0.05). Ghrelin levels were similar in men and women and did not vary by menopausal status or in association with cortisol levels. Our data are consistent with the hypotheses that insulin may negatively regulate ghrelin and that high-density lipoprotein may be a carrier particle for circulating ghrelin.

Original languageEnglish (US)
Pages (from-to)5747-5752
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Volume88
Issue number12
DOIs
StatePublished - Dec 2003

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Ghrelin
HDL Cholesterol
Insulin Resistance
Hydrocortisone
Insulin
Fats
Body Composition
Meals
Fasting
Pituitary Hormones
HDL Lipoproteins
Chemical analysis
Cell Size
Lipid Metabolism
Adipocytes
Adrenocorticotropic Hormone
Weight Loss
Homeostasis
Eating
Aging of materials

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology, Diabetes and Metabolism

Cite this

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title = "Ghrelin Levels Correlate with Insulin Levels, Insulin Resistance, and High-Density Lipoprotein Cholesterol, but Not with Gender, Menopausal Status, or Cortisol Levels in Humans",
abstract = "The gut peptide, ghrelin, may participate in the control of energy homeostasis and pituitary hormone secretion in humans, stimulating both food intake and, at pharmacological doses, ACTH and cortisol secretion. Meal consumption and weight loss regulate ghrelin levels, but less is known about the relationship of ghrelin to body composition, aging, menopausal status, and lipid metabolism. Therefore, 60 adult men and women of widely varying ages and weights were characterized in terms of body composition and levels of ghrelin, glucose, insulin, lipids, and cortisol. Fasting ghrelin levels correlated positively with age and negatively with BMI and fat cell size, but were not related to fat mass, intraabdominal fat, or lean mass. Fasting ghrelin levels correlated most strongly with insulin levels (r = -0.39; P = 0.002), insulin resistance as determined by the quantitative insulin sensitivity check index (r = 0.38; P = 0.003), and high-density lipoprotein cholesterol levels (r = 0.33; P = 0.009). Meal-induced ghrelin suppression correlated with the postprandial rise in insulin (r = 0.39; P <0.05). Ghrelin levels were similar in men and women and did not vary by menopausal status or in association with cortisol levels. Our data are consistent with the hypotheses that insulin may negatively regulate ghrelin and that high-density lipoprotein may be a carrier particle for circulating ghrelin.",
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AU - Cummings, David E.

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