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[The growth of axons in the periphery after a decrease in the quantity of nerve cells in sympathetic ganglia]
Neirofiziologiia = Neurophysiology
|January 1, 1976
Summary
Chemical sympathectomy in rats reduced stellate ganglion cells, eliminating pressor reflexes. These reflexes were restored by four months due to axonal regrowth in remaining adrenergic neurons.
Area of Science:
- Neuroscience
- Autonomic Nervous System Research
- Cellular Biology
Context:
- Investigating the impact of chemical sympathectomy on the rat stellate ganglia.
- Observing the recovery of physiological responses following nerve damage.
Purpose:
- To determine the effects of reduced sympathetic nerve cells on pressor reflexes.
- To elucidate the mechanism of recovery in the autonomic nervous system.
Summary:
- Chemical sympathectomy reduced rat stellate ganglion cells to 30% of normal levels.
- Sympathectomized rats at two months showed no pressor reflexes to asphyxia or femoral nerve stimulation.
- Pressor reflexes recovered by four months, correlating with observed axonal growth in remaining adrenergic neurons.
Impact:
- Demonstrates the regenerative capacity of adrenergic neurons in the sympathetic nervous system.
- Provides insights into the recovery timeline of autonomic functions after sympathectomy.
- Highlights the role of axonal plasticity in restoring lost physiological responses.