[The state of the vascular net and the hematoencephalic barrier in the cerebral cortex of rats during hypoxic training].
With the aid of vital contact microscopy of the brain cortex, a sharp increase up to 613.2% in the total length of capillaries for a space unit by the 60 th day of training was shown to occur in the pia and the cortex in the course the training for hypoxia. Also the excessive blood volume, enlargement and lengthening of the small arteries and veins as well as increase in the capillaries diameter by 25-30%, were noted. In the course of the training, the blood flow speed increases considerably in cortical vessels. Study of the cortical blood-brain barrier by means of supravital microfluorimetry showed that, in the course of the training, the acid stainer (fluorescin) permeability through the barrier does not decrease. The readjustment of the cortical vascular net during the training does not affect the blood-brain permeability.
D000818:Animals; D001812:Blood-Brain Barrier; D002196:Capillaries / Q000503:physiopathology*; D002540:Cerebral Cortex / Q000098:blood supply*; D002560:Cerebrovascular Circulation; D002908:Chronic Disease; D002534:Hypoxia, Brain / Q000503:physiopathology*; D008297:Male; D010841:Pia Mater / Q000098:blood supply; D051381:Rats; D013997:Time Factors
Sostoianie sosudistoĭ seti i gematoéntsefalicheskogo bar'era v kore golovnogo mozga krys v protsesse trenirovki k gipoksii