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Roux-en-Y Gastric Bypass Operation in Rats

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Gastric emptying and obesity.

R A Wright, S Krinsky, C Fleeman

Gastroenterology

|April 1, 1983

Summary

Obese individuals exhibit faster solid gastric emptying than nonobese individuals. This accelerated gastric emptying in obesity persists even after significant weight loss, suggesting a fundamental physiological difference.

Area of Science:

Gastroenterology
Metabolic Disorders
Physiology

Background:

Gastric emptying abnormalities have been suggested in obesity.
Understanding these processes is crucial for metabolic health.

Purpose of the Study:

To investigate and quantify gastric emptying rates in obese versus nonobese individuals.
To explore potential correlations between gastric emptying and body mass.

Main Methods:

Quantitative fluid and solid gastric emptying assays were performed.
A dual radionuclide technique was employed for precise measurements.
77 subjects (46 obese, 31 nonobese) participated.

Main Results:

Obese subjects demonstrated significantly more rapid solid gastric emptying (p < 0.05).

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Obese men showed markedly faster emptying rates compared to nonobese men (p < 0.01).

Gastric emptying rates did not change after weight loss in obese subjects.

Conclusions:

The rate of solid gastric emptying is abnormally rapid in obese individuals.
This accelerated emptying appears independent of body surface area and persists post-weight loss.
The underlying mechanisms for rapid gastric emptying in obesity require further investigation.