ABSTRACT
Pathomorphological and histochemical study carried out in guinea pigs at the stage of paralysis of the limbs after the oral administration of C. botulinum toxin has revealed the presence of morpho-metabolic changes pertaining to phase 2 of the development of dystrophic processes in the neurons of the nucleus of the abducent nerve and Darkshevich's nucleus. At the myasthenic stage the development of dystrophic processes in the neurons of Darkshevich's nucleus has been found to reach phase 3. The study indicates that C. botulinum toxin possesses different tropism in respect of the neurons of the oculomotor nuclei; this fact correlates with the clinical picture of botulism.
Subject(s)
Botulinum Toxins/adverse effects , Botulism/pathology , Neurons/pathology , Animals , Botulism/enzymology , Botulism/etiology , Clostridium botulinum/metabolism , Guinea Pigs , Histocytochemistry , Mesencephalon/enzymology , Mesencephalon/pathology , Necrosis , Neurons/enzymology , Ophthalmoplegia/etiology , Pons/enzymology , Pons/pathologySubject(s)
Botulinum Toxins/poisoning , Catecholamines/metabolism , Ganglia, Sympathetic/metabolism , Ophthalmoplegia/etiology , Acid Phosphatase/metabolism , Animals , Cholinesterases/metabolism , Ganglia, Sympathetic/enzymology , Ganglia, Sympathetic/pathology , Guinea Pigs , Histocytochemistry , Succinate Dehydrogenase/metabolismSubject(s)
Botulinum Toxins/pharmacology , Botulism/pathology , Mesencephalon/pathology , Oculomotor Nerve/pathology , Acid Phosphatase/metabolism , Animals , DNA/metabolism , Guinea Pigs , Histocytochemistry , Mesencephalon/metabolism , Oculomotor Nerve/metabolism , RNA/metabolism , Succinate Dehydrogenase/metabolismSubject(s)
Botulinum Toxins/administration & dosage , Oculomotor Nerve/drug effects , Trochlear Nerve/drug effects , Animals , Botulism/metabolism , Botulism/pathology , Enzyme Activation/drug effects , Guinea Pigs , Neurons/drug effects , Oculomotor Nerve/metabolism , Oculomotor Nerve/pathology , Time Factors , Trochlear Nerve/metabolism , Trochlear Nerve/pathologyABSTRACT
After the per os administration of 1Dlm/ml of botulin, type B. there were observed at the period of development of the limb paralysis and myasthenia morphological changes in the locus coeruleus cells expressed in the development of a more pronounced than normal perinuclear clarification and some nuclear basophilia. Histochemical study of succinic dehydrogenase, acid phosphatase, cholinesterase, and catecholamines pointed to the intensified neuron metabolism of the locus coeruleus; this could serve as an indication of enhanced energopacemaker function of this nucleus in hypoxia which occurred.
Subject(s)
Botulinum Toxins/poisoning , Locus Coeruleus/metabolism , Acid Phosphatase/metabolism , Animals , Catecholamines/metabolism , Cholinesterases/metabolism , DNA/metabolism , Guinea Pigs , Histocytochemistry , Locus Coeruleus/enzymology , Locus Coeruleus/pathology , RNA/metabolism , Succinate Dehydrogenase/metabolismABSTRACT
After the administration to guinea pigs per os of 1 Dlm of botulin toxin, type B, a change of the RNA synthesis in the nucleoli and DNA depolymerization in the nuclei was observed in some of the cells of the mesencephalic nucleus of the trigeminal nerve. An increase in the activity of succinic dehydrogenase and of acid phosphatase coursed without any necrotic processes in the cells. Basing upon the changes in the activity of succinic dehydrogenase in the neurons of the mesencephalic nucleus a conclusion was drawn that hypoxia began to develop at the period of appearance of paralyses of the limbs and reached its maximum in myasthenia.
Subject(s)
Botulinum Toxins/toxicity , Mesencephalon/metabolism , Trigeminal Nerve/metabolism , Acid Phosphatase/metabolism , Animals , Cell Nucleolus/metabolism , DNA/metabolism , Guinea Pigs , Mesencephalon/pathology , Neurons/metabolism , RNA/biosynthesis , Succinate Dehydrogenase/metabolism , Trigeminal Nerve/pathologyABSTRACT
On the appearance in the animals (guinea pigs) of paralysis of the limbs and myasthenia after the administration of Cl. botulinum, type B, toxin, there was seen a considerable vascular hyperemia of the spinal cord, and in the neurons of the phrenic nerve nucleus there developed dystrophic-necrotic processes coursing with a marked swelling, hyperchromasia and tigrolysis. As revealed histochemically, at this stage of the botulin intoxication the neurons of the phrenic nerve nucleus displayed metabolic changes expressed in the altered activity of succinic dehydrogenase, acid phosphatase and cholinesterase.