Key result
Pancreatic vagotomy significantly decreased levels of plasma insulin in bilaterally adrenalectomized rats, supporting a vagal mechanism that modulates insulin secretion.
Why the study?
Does vagotomy or vagal stimulation affect plasma insulin levels in rats?
Population
Male rats, fasted for 22 h, weighing about 300 g and anaesthetized with pentobarbitone sodium
Comparison
Pancreatic vagotomy and electrical stimulation… vs Baseline and non-adrenalectomized state
Design
Preclinical
Follow-up
15 min after vagotomy
Authors
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May indicate vagal modulation of insulin when adrenals are absent; leaves open relevance to intact models or humans.
Does vagotomy or vagal stimulation affect plasma insulin levels in rats?
The vagus nerve modulates insulin secretion in rats, a mechanism that may be masked by adrenal gland activity.
Sakaguchi et al. (1980) studied this question. Pancreatic vagotomy and vagal stimulation vs. Baseline / Unilateral adrenalectomy was evaluated on Plasma levels of insulin and sugar. Pancreatic vagotomy significantly decreased levels of plasma insulin in bilaterally adrenalectomized rats, supporting a vagal mechanism that modulates insulin secretion.
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