Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0036572 (seizures)
 80,221 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The influence of electrical and chemical stimulation of nucleus caudatus (NC) on bioelectrical seizure activity of amygdala (Am) was studied in rabbits. The electrical stimulation of NC inhibits seizures in Am induced by the administration of picrotoxin into this nucleus. Dopamine (DA) and cholinomimetics-metacholine and neostygmine-applied into NC inhibit seizures in Am. Noradrenaline (NA) acts biphasically, first potentiating and then inhibiting seizures in Am. Serotonin (5-HT) and glutamic acid (GA) administered to NC do not affect the seizures. In the case of seizures excited by electrical stimulation, DA and neostygmine possessed inhibiting action; NA, too, inhibited seizures without, however, inducing primary stimulation. Similarly as in the case of picrotoxin-stimulated seizures, neither 5-HT nor GA brought about the effects. The present study deals with the correlation of dopaminergic anc cholinergic systems in NC.
Pol J Pharmacol Pharm 1976
PMID:The influence of neuromediators injected into nucleus caudatus on bioelectrical seizure activity of amygdala. 0 50

The protective effects of pentobarbitone, hydroxydione and diazepam against acute and chronic toxicity of high-pressure oxygen (HPO) were studied in rats. During exposure to hyperbaric oxygen body temperature was measured and ECG as well as EMG tracings from the diaphragm were obtained. Long term observations of animals after the exposure to HPO were conducted. Pentobarbitone and hydroxydione reduced the manifestations of acute toxicity but increased those of chronic toxicity. Diazepam reduced the manifestations of acute toxicity and seemed to counteract those of chronic toxicity. Lowering of body temperature of the animals which occurred during exposure to HPO was probably connected with manifestations of chronic toxicity. Observation of the cardiorespiratory functions suggested a possible connection between their disturbances and an onset of seizures and development of oxygen-induced paralysis.
Acta Physiol Pol
PMID:The protective action of certain anaesthetics and tranquilizers against the effects of hyperbaric oxygen. 1 48

The dynamics of ultrastructural changes in axonal endings were studied after experimental epileptic seizures. Mice and rats from strains with genetically--determined audiogenic epilepsy were used as a model of epilepsy. The animals were divided into 3 groups: in group 1 only one seizure was evoked, in group 2 eight seizures within 4 hours, group 3 served as control. The animals were killed immediately after the last seizure, 30 min. after it or 1 hour after the seizure. Hippocampal gyrus cortex was impregnated with zinc-iodide-osmium tetroxide and synapses were examined under electron microscope. The number of synaptic vesicles showing positive reaction with zinc iodide was calculated in 20 synaptic boutons in each group. A significant correlation was demonstrated between the frequency of seizures and the survival time after the seizure on the one hand, and synaptic changes, on the other. In the control group 97% of synaptic vesicles were filled with neurotransmitter substance giving positive reaction with zinc iodide. Immediately after the single seizure 46% of synaptic vesicles were found emptied, 30 min. later the neurotransmitter substance was demonstrated in 79% of vesicles, 1 hour later 82% of vesicles had normal appearance. Immediately after serial seizures 91% of vesicles were found empty, 30 min. later the neurotransmitter was present in 50% of vesicles, 1 hour later in 78%. In another group of animals seizures were evoked once daily for 40 days (chronic epilepsy model). Synaptic changes were different: the synaptic boutons were swollen, the number of vesicles was reduced, greatly enlarged vesicles and clear membrane-bound vacuoles appeared. They evidenced degenerative character of changes. It is suggested that degenerative synaptic changes may be a substrate of epileptic dementia.
Neurol Neurochir Pol
PMID:[Dynamics of synaptic changes in experimental audiogenic epilepsy]. 1 11

The authors describe clinical and electroencephalographic analysis of 23 cases of banign infantile epilepsy. The characteristic features of seizures, the clinical course, and the EEG findings with presence of spikes and/or spikes and slow waves in leads from the motor and midtemporal areas are discussed. Frequent influence of factors releasing the first and subsequent seizures and a history of risk factors during pregnancy, and perinatal period, and early acquired predisposition were demonstrated. Follow-up showed that seizures disappeared at the age of puberty. All observations suggest the possibility of separation of benign infantile epilepsy as a particular form of this disease.
Neurol Neurochir Pol
PMID:[Benign infantile epilepsy]. 10 16

5-Hydroxytryptophan (5-HTP) reduced the intensity of both audiogenic and pentylenetrazol seizures. p-Chlorophenylalanine reduced audiogenic seizure (AGS) susceptibility but failed to change the pentylenetetrazol seizure (PTS). Drugs blocking brain serotonin (5-HT) receptors suppressed AGS but caused no clear effects upon PTS. Pentylenetetraziol-induced shock increased brain 5-hydroxyindoleacetic acid (5hiaa) concentrations and decreased 5-HT levels. Single audiogenic shock decreased the acumulation of 5-HT and 5-HIAA in the brains of mice pretreated with 5-HTP. On the other hand PTS increased the accumulation of 5-HT and 5-HIAA in the brains of mice pretreated with 5-HTP. It is suggested that AGS decrease brain 5-HT turnover whilst PTS cause an opposite effect.
Pol J Pharmacol Pharm
PMID:Brain serotonin and epileptic seizures in mice: a pharmacological and biochemical study. 14 40

The authors analysed 13 cases of West's syndrome (8 females and 5 males observed in a period of 30 months. In only one case there was history of perinatal trauma. In 7 children the psychomotor development was very good until the time of development of seizures, in 2 children hyperexcitability was present, 1 was obese, 2 had various infections. In 7 cases the seizures developed within 1 to 20 days after DiPerTe or poliomyelitis vaccination. The time from the onset of seizures to beginning of hormonal treatment ranged from 4 weeks to 5 months. Corticosteroids or ACTH were administered for 2 months at least, and benzodiazepine drugs and/or phenobarbital were given additionally. It was found that the effects of treatment were much better in children referred for treatment early after onset of seizures. In cases with delayed hormonal treatment mental retardation was considerable and seizures were frequent.
Neurol Neurochir Pol
PMID:[Importance of early hormonal treatment of salaam seizures for the further course of epilepsy in children]. 17 99

Behavioural and bioelectric characteristics of epileptic seizures caused by acoustic stimulus in mice from the Swiss Albino Rb strain with genetically determined audiogenic epilepsy are presented. The value of this epilepsy model is emphasized stressing that the epileptogenic stimulus acts from a distance, causing no damage to the nervous system and no artifacts. Besides that, seizures can be provoked at a definite frequency and at arbitrarily chosen time. A disadvantage of the model is the necessity of provoking each seizure separately which causes that this model cannot meet one of the conditions of Jasper's definition concerning spontaneity of seizure development. With regard to the course of seizure it is emphasized that it is somewhat similar to human grand mal epilepsy representing the basic phases of seizure. Electrophysiological investigations carried out under conditions of long-term fully reproducible experiment demonstrated presence of very evident and rich electrocorticographic symptomatology of audiogenic epileptic seizure whose behavioural phases show a high correlation with phasic changes in bioelectric brain activity. The investigations carried out in sleep failed to demonstrate differences in the susceptibility to seizure development when the stimulus was applied in waking state or in any of both phases of sleep. This strain is useful to morphological ultrastructural, biochemical and possibly electrophysiological investigations.
Neurol Neurochir Pol
PMID:[Usefulness of a strain of mice with genetically determined audiogenic epilepsy as a model of experimental epilepsy]. 19 May 52

Unilateral injections of carbachol (CCh, 2 mul) to lateral parts of substantia nigra (SNlat) of the rabbit increased the alert index (participation of alert pattern in EEG), produced epileptoidal EEG discharges, sniffing, ipsi- and contralateral rotations, and abnormal movements of fore limbs, which may be regarded as an equivalent of localized seizures. Ipsilateral rotations appeared together with epileptoidal discharges confined to SNlat, while contralateral -- with discharges in ventrolateral thalamic nucleus (VLTh). The EEG discharges appeared firstly and had the longest duration in VLTh. Injection of CCh to medial substantia nigra (SNmed) did not produce contralateral turnings and rotations, and epileptoidal EEG discharges appeared primarily in SNmed. In rabbits with previously lesioned nigro-neostriatal pathway (NSP) at the level of Forel's fields, the EEG discharges produced by CCh injected into SNlat appeared firstly and were most prolonged in SNlat, while they appeared much later in caudate nucleus (NC), cerebral cortex, and VLTh. The contralateral rotations were inhibited, and ipsilateral ones -- potentiated in the lesioned rabbits.
Pol J Pharmacol Pharm
PMID:The participation of the nigro-thalamic pathway in the nigral control of the caudate nucleus. 30 Aug 72

Electrolytic lesions of the median raphe nucleus and substantia nigra markedly increased susceptibility to pentetrazole seizures in rats. L-5-hydroxytryptophan, considerably increasing the serotonin (5-HT) level in the brain, markedly inhibited the seizures and abolished the seizure-enhanced effect of lesion of the substantia nigra. L-DOPA tended to potentiate the seizures-enhancing effect produced by lesions of the median raphe nucleus. The changes in the brain 5-HT level and the intensity of pentetrazole seizures were correlated. The results indicate that the balance between neurotransmitter systems in the brain is of importance to the susceptibility to pentetrazole convulsions.
Pol J Pharmacol Pharm
PMID:The effect of L-DOPA and L-5-hydroxytryptophan on the pentetrazole seizures in rats after lesions of the median raphe nucleus and substantia nigra. 31 24

Results of psychological testing in 46 epileptics with severe behaviour disturbances treated surgically, by the stereotaxic method (selective exclusion of the dorso medial parts of amygdalae) are reported. After the operation there was a significant improvement of behaviour and seizures of temporal-lobe type were no longer observed. Comparative tests demonstrated a significant reduction of emotional tension, development of ability to behaviour and emotional reactions control, reduction of emotional instability and motor hyperactivity. Aggressiveness in difficult or conflict situations was markedly diminished or eliminated.
Neurol Neurochir Pol
PMID:[Effect of amygdalotomy on behavior disorders in epileptics]. 35 79


1 2 3 4 5 6 7 8 9 10 Next >>