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Substance in peripheral nerve which influences oxygen uptake.

I H HELLER, S HESSE

Science (New York, N.Y.)

|May 26, 1961

Summary

A substance in rat sciatic nerves boosts respiration in fresh nerves. This nerve substance is essential for glucose utilization and increased oxygen uptake during electrical stimulation.

Area of Science:

Neuroscience
Biochemistry

Background:

The rat sciatic nerve is a crucial component of the peripheral nervous system.
Nerve respiration and glucose metabolism are fundamental physiological processes.

Purpose of the Study:

To investigate a substance within the rat sciatic nerve that influences nerve respiration.
To determine the role of this substance in glucose utilization and oxygen uptake during nerve stimulation.

Main Methods:

Extraction of a substance from rat sciatic nerve.
Incubation of fresh normal nerves with the extracted substance.
Measurement of oxygen uptake and glucose utilization with and without electrical stimulation.

Main Results:

A substance diffusing from rat sciatic nerve significantly increased the respiration rate of fresh nerves.

Keywords:

OXYGEN/metabolism PERIPHERAL NERVES/metabolism

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Both glucose utilization and oxygen uptake, enhanced by electrical stimulation, were dependent on the presence of this substance.

The substance's effect was observed with or without glucose in the medium.

Conclusions:

The rat sciatic nerve contains a diffusible substance that enhances nerve respiration.
This substance plays a critical role in mediating the metabolic responses of nerves to electrical stimulation, including glucose uptake and oxygen consumption.