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Early postnatal overfeeding and diabetes susceptibility
1Institute of Experimental Endocrinology, Humboldt University Medical School, Charité, Berlin.
Experimental and Clinical Endocrinology
|December 1, 1990
Summary
Early overnutrition in suckling rats led to higher diabetes risk in adulthood. This early postnatal hyperinsulinemia increased susceptibility to diabetes later in life.
Area of Science:
- Endocrinology
- Metabolic Research
- Developmental Biology
Background:
- Early life nutrition significantly impacts long-term metabolic health.
- Understanding the effects of early nutrition on diabetes susceptibility is crucial for public health.
Purpose of the Study:
- To investigate the long-term effects of preweaning nutritional status on diabetes susceptibility in adult rats.
- To determine if early postnatal overnutrition or undernutrition influences adult-onset diabetes risk.
Main Methods:
- Rat pups were assigned to small (overnutrition), normal (normal nutrition), or large (undernutrition) litters to control milk intake.
- All weaned rats received the same diet ad libitum.
- Diabetes susceptibility was assessed in adulthood, including response to streptozotocin induction.
Main Results:
- Preweaning overnutrition resulted in early postnatal hyperinsulinemia.
- Overnutrition before weaning led to decreased glucose tolerance and increased diabetes susceptibility in adulthood.
- Preweaning undernutrition did not appear to offer protection against adult diabetes susceptibility.
Conclusions:
- Early postnatal overnutrition, linked to hyperinsulinemia, can elevate the risk of developing diabetes in adult life.
- Nutritional programming during early development has lasting metabolic consequences.