ENDOCELLULAR REGULATION OF OXYGEN CONSUMPTION IN NEURONE OF ISOLATED CRUSTACEAN STRETCH RECEPTOR
S. L. Zaguskin, L. D. Zaguskina, S. S. Zaguskina
Laboratory of Chronobiology of Physic Research Institute, Southern Federal University, Rostov-on-Don;
e-mail: zag@ip.rsu.ru
Morphological correlations of functional regulation of oxygen consumption have been investigated in single
of isolated crustacean stretch receptor neuron. The increase in oxygen consumption is promoted by: 1) redistribution
of mitochondria and increase in cytochrome oxidase (CO) activity in mitochondria near to the plasmatic
membrane; 2) coordination of mitochondria aggregation rhythms with pO2 rhythms in external environment of a
cell; 3) reduction of the area with high CO and mitochondria activity, and reduction of the way of oxygen diffusion;
4) increase in CO activity gradient from periphery to the center of the neuron body; 5) carry of oxygen by
water current under hydration of the neuron body, and cytoplasm dilution under transition of a part of gel in sol;
6) cyclic changes in the neuron body and hillock sizes ratio determining carry of oxygen by water current into
the neuron body, oxygen absorption by mitochondria in the neuron body, and transition of the water released
from oxygen from the neuron body into hillock and further into the external environment.
Key words: neuron, oxygen uptake, impulse activity, mitochondria, biorhythms, sol-gel ratio
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