[Effect of electrostimulation of the medial portion of the hypothalamus of cats on features of sciatic nerve fiber restructuring in experimental neuritis].
In order to study the processes of rearrangement in nerve fibers of the ischiatic nerve and its nervi nervorum at experimentally induced neuritis, the middle part of the hypothalamus was electrically stimulated in 74 mature cats. Twenty three cats were electrically stimulated with alternating current of a rectangular form, 50 Hz 1 m/sec, 1.5 V, for 30 min on each side of the hypothalamic subtubercle. Seven days after electrode implantation, the experimental neuritis was produced by inserting aseptic mica plates subepineurally into the ischiatic nerve. Samples of the nerve stem were taken from the traumatized area and histological sections and film preparations were made. The material was treated after Foot, Ramon y Cajal, Rasskazova, Bielschowsky-Gross-Kampos, Sokoliansky, McManus. As demonstrated the analysis of the preparations, at early stages of the experiments the nerve fibers were preserved better under the electrostimulation than in the intact hypothalamus. However, by the 60th day, resulting from the pathology of the diencephalon, some distrophic changes developed in the peripheral nerve. Lateral branching processes were forming on the axonal cylinders. Nervi nervorum were spreading and forming long and dense wrappings around the endoneural sheaths where they terminated with loops simulating Perroncito's spirals.
D000818:Animals; D001927:Brain Diseases / Q000150:complications; D002415:Cats; D004558:Electric Stimulation; D005260:Female; D007031:Hypothalamus / Q000503:physiopathology*; D007033:Hypothalamus, Middle / Q000503:physiopathology*; D008297:Male; D009186:Myelin Sheath / Q000473:pathology; D009443:Neuritis / Q000150:complications / Q000473:pathology*; D010525:Peripheral Nerves / Q000473:pathology*; D013997:Time Factors
Vliianie élektrostimuliatsii srednego otdela gipotalamusa koshek na osobennosti perestroĭka nervnykh volokon sedalishchnogo nerva pri éksperimental'nom nevrite.