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Biomedical subjects

J Kucera

Publications and source records attributed to J Kucera.

At least 253 records · Page 14Linked to original sources
PubMed1978

Epidemiology and phenotype of congenital coronary artery anomalies. Analysis of 80 cases found in necropsies of stillborn fetuses and infants.

In the period from 1961 to 1974, 80 cases of congenital coronary artery anomalies in necropsies of infants and stillborn fetuses were diagnosed in the Czech Socialist Republic among more than 2.1 million consecutive deliveries. In the population thus defined the mean frequency of these anomalies was 3.8 per 100,000, with extreme values from 1.3 to 7.0 per 100,000. The epidemiological and clinical phenomena of these anomalies and their relations to selected biological-genetic and ecological factors are discussed.

Child↗
PubMed1977

The action of piperidine on muscle spindles in the rat.

Piperidine hydrochloride induced discharge in primary and secondary endings of muscle spindles in rat tailbase muscle preparations. The threshold concentration for primary endings (2.0 X 10(-5) g/ml) was below that for secondary endings (4.0 X 10(-5) g/ml). The effect of piperidine was antagonised by tubocurarine but not by atropine. The action of piperidine on primary and secondary endings responding to 'ramp-and-hold' stretch was predominantly on the static component of excitation, and usually in the absence of any concomitant enhancement of the dynamic effect. This effect was opposite to that induced by succinylcholine. A possible action of piperidine at cholinoceptive sites of the nicotinic type and associated with gamma-trial fusimotor terminals is discussed.

Action Potentials↗
PubMed1977

Histochemistry of intrafusal muscle fibers outside the spindle capsule.

Regional differences in histochemical properties along the length of rat intrafusal muscle fibers were examined. Outside the muscle spindle capsule the nuclear bagfibers lose their hitherto characteristic ATPase activity and stain in a manner similar to that of extrafusal type I muscle fibers, perhaps in relationship to spindle skeletofusimotor innervation.

Adenosine Triphosphatases↗