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Biomedical subjects

J Tokarski

Publications and source records attributed to J Tokarski.

5 recordsLinked to original sources
PubMed1992

The influence of immobilization stress on natural killer cytotoxic activity in halothane susceptible and resistant pigs.

In halothane-susceptible (Hal+) and halothane-resistant (Hal-) Belgian Landrace pigs, the influence of immobilization stress on cytotoxic activity of natural killer (NK) cells was evaluated. Four hour immobilization causes biphasic changes in cytotoxicity, i.e. an initial increase followed by a subsequent depression. In both groups of pigs stress-induced suppression of NK cell activity lasted for several days in the post stress period. Throughout the experiment, i.e. before, during and after stress, the level of cytotoxicity was higher in Hal+ than in Hal- pigs.

Animals↗
PubMed1976

The behaviour of acetylcholinesterase activity in neurons of the bulbous part of the reticular formation in albino rats after bilateral vagotomy.

The influence of a bilateral vagotomy on the acetylcholinesterase activity (AChE) in the neurons of the bulbous part of the reticular formation of albino rats was investigated. An increase in the reaction to acetylcholinesterase (AChE) was ascertained in the large as well as the small neurons 8 h after the transection of the vagus nerves, which indicates their decreased activity. It may be assumed that a bilateral vagotomy causes a decrease in the activity of cholinergic mechanisms within the periphery of the reticular formation neurons.

Acetylcholinesterase↗
PubMedDate not supplied

[Meningomyelocele with spinal cord cyst and internal hydrocephalus in a 9-month-old boy].

The authors describe a boy aged 9 months with open myelomeningocele which changed gradually into meningocele with spinal cord cyst. During treatment internal hydrocephalus developed requiring insertion of Pudenz-Heyer ventriculoatrial. valve. The treatment was successful. The case illustrates the succession of changes which may develop in myelomeningocele and the relationship between the state of internal hydrocephalus and the volume of meningocele and spinal cyst (cerebrospinal fluid production exceeding its resorption).

Cysts↗
PubMedDate not supplied

A programming unit for prolonged, cyclic stimulation.

A system is described allowing for automatization of prolonged frequently repeated stimulation with independent control of individual stimulation time and intervals between consecutive stimulations. Through a controlling system of electromagnetic relay it was possible to obtain bipolar mechanical isolation of the stimulator from the electrodes during intervals between sucessive stimulations which eliminated sompletely the possibility of uncontrolled stimulation of the preparation.

Electric Stimulation↗