Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women

Steven K. Grinspoon, Hasan Askari, Michael L. Landt, David M. Nathan, David A. Schoenfeld, Doug L. Hayden, Michael Laposata, Jane Hubbard, Anne Klibanski

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The plasma concentration of leptin is reduced in association with chronic energy restriction and weight loss in humans, but little is known about the acute effects of fasting and glucose infusion on leptin. In this study, plasma leptin, insulin, glucose, and fatty acid concentrations were measured daily in 14 healthy, normal-weight, female volunteers aged 24 ± 4 y with a body mass index (kg/m2) of 24.2 ± 3.6 during a 4-d fast. The mean plasma leptin concentration decreased by 54 ± 8% with fasting (P = 0.0006, ANOVA). In a stepwise-regression model, the change in leptin concentration with fasting correlated most significantly with the change in insulin (R2 = 0.48. P = 0.0057) and to a lesser extent with the change in body fat by bioimpedance analysis (R2 = 0.19, P = 0.03). Plasma leptin concentrations measured every 20 min from 2000 to 0800 on the fourth night of the fast did not show a time-dependent rise. A continuous intravenous infusion of 5% glucose providing 1414 ± 323 kJ/d (338 ± 78 kcal/d) was begun after 4 d of fasting in seven subjects who continued to fast for an additional 6 d. Within 24 h of the glucose infusion, leptin concentrations increased significantly by 80 ± 52% (P < 0.05). These data show the sensitivity of plasma leptin concentrations to small changes in energy supply and suggest a basic role of substrate metabolism in the short-term regulation of leptin.

Original languageEnglish (US)
Pages (from-to)1352-1356
Number of pages5
JournalAmerican Journal of Clinical Nutrition
Volume66
Issue number6
StatePublished - 1997
Externally publishedYes

Fingerprint

Leptin
leptin
fasting
Fasting
Weights and Measures
Glucose
glucose
insulin
Insulin
bioelectrical impedance
energy
acute effects
Intravenous Infusions
body fat
volunteers
body mass index
Adipose Tissue
Weight Loss
Volunteers
Analysis of Variance

Keywords

  • Fat mass
  • Fatty acids
  • Glucose
  • Growth hormone
  • Insulin
  • Leptin
  • Obesity
  • Women

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science

Cite this

Grinspoon, S. K., Askari, H., Landt, M. L., Nathan, D. M., Schoenfeld, D. A., Hayden, D. L., ... Klibanski, A. (1997). Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women. American Journal of Clinical Nutrition, 66(6), 1352-1356.

Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women. / Grinspoon, Steven K.; Askari, Hasan; Landt, Michael L.; Nathan, David M.; Schoenfeld, David A.; Hayden, Doug L.; Laposata, Michael; Hubbard, Jane; Klibanski, Anne.

In: American Journal of Clinical Nutrition, Vol. 66, No. 6, 1997, p. 1352-1356.

Research output: Contribution to journalArticle

Grinspoon, SK, Askari, H, Landt, ML, Nathan, DM, Schoenfeld, DA, Hayden, DL, Laposata, M, Hubbard, J & Klibanski, A 1997, 'Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women', American Journal of Clinical Nutrition, vol. 66, no. 6, pp. 1352-1356.
Grinspoon SK, Askari H, Landt ML, Nathan DM, Schoenfeld DA, Hayden DL et al. Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women. American Journal of Clinical Nutrition. 1997;66(6):1352-1356.
Grinspoon, Steven K. ; Askari, Hasan ; Landt, Michael L. ; Nathan, David M. ; Schoenfeld, David A. ; Hayden, Doug L. ; Laposata, Michael ; Hubbard, Jane ; Klibanski, Anne. / Effects of fasting and glucose infusion on basal and overnight leptin concentrations in normal-weight women. In: American Journal of Clinical Nutrition. 1997 ; Vol. 66, No. 6. pp. 1352-1356.
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