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The decrease of rat postprandial plasma triacylglycerol concentration after multiple cycles of starvation-refeeding.

Z Kochan1, E Goyke, J Karbowska

  • 1Department of Biochemistry, Medical University of Gdansk, Poland.

Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
|March 31, 2001
PubMed
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Repeated dieting cycles in rats led to reduced body weight and adipose tissue. Multiple starvation-refeeding cycles effectively lowered plasma triacylglycerol levels, suggesting a strategy for weight management.

Area of Science:

  • Metabolic studies
  • Animal models

Background:

  • Dieting and weight cycling are common behaviors with potential metabolic consequences.
  • Understanding the long-term effects of repeated starvation-refeeding on body composition and lipid profiles is crucial.

Purpose of the Study:

  • To investigate the impact of single and multiple cycles of starvation-refeeding on rat body weight, adipose tissue, and plasma lipid concentrations.
  • To determine if repeated cycles enhance or alter the effects observed after a single cycle.

Main Methods:

  • Rats underwent one or eight cycles of starvation-refeeding.
  • Body weight, plasma lipid levels (triacylglycerol, total cholesterol, HDL cholesterol), and epididymal white adipose tissue weight were measured.
  • Recovery of adipose tissue weight was assessed after periods of ad libitum feeding.

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Main Results:

  • Single starvation-refeeding cycle decreased postprandial plasma triacylglycerol but not body weight or cholesterol.
  • Eight cycles led to decreased body weight, plasma triacylglycerols, and adipose tissue weight.
  • Adipose tissue weight recovered to control levels after 9 days of refeeding following one cycle, but not after eight cycles.
  • The decrease in postprandial plasma triacylglycerol persisted longer after eight cycles.

Conclusions:

  • Dieting, particularly multiple starvation-refeeding cycles, is associated with reduced body and adipose tissue weight and lower plasma triacylglycerol concentrations.
  • Multiple cycles may offer better long-term maintenance of reduced adipose tissue weight and plasma triacylglycerol levels compared to single cycles.