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Biomedical subjects

J Kucera

Publications and source records attributed to J Kucera.

At least 199 records · Page 11Linked to original sources
PubMed1982

Blood parasites of birds in Central Europe. 4. Trypanosoma, "Atoxoplasma", Microfilariae and other rare haematozoa.

The present paper, the last in the series on avian blood parasites in Central Europe, summarizes the data on parasites of the genera Trypanosoma, "Atoxoplasma", "Lankesterella", microfilariae and spirochaetes found in this region. Trypanosomes occur most frequently in Columbiformes, Corvidae, Galliformes and Strigiformes, while "Aloxoplasma" is encountered only in passerines, most frequently in Fringillidae, Passeridae and Hirundinidae; "Lankesterella" is to be found only in two species of passerines. Microfilariae occur in Corvidae and Galliformes, and spirochaetes were encountered in the blood smears from four birds only. All these organisms are very rarely found in birds due to the fact that the blood smears made from peripheral blood of birds are unsuitable for the diagnosis of these parasites.

Animals↗
PubMed1981

Histochemical profiles of cat intrafusal muscle fibers and their motor innervation.

Muscle spindles were examined histochemically in serial transverse sections of cat tenuissimus muscles. The myofibrillar adenosine triphosphatase (ATPase) staining reaction was used to identify nuclear bag1, bag2 and nuclear chain intrafusal muscle fibers. Regional differences in ATPase staining occurred along the bag1 and bag2 fibers but not along the chain fibers. All intrafusal fiber types displayed regional variability in staining for nicotinamide adenine dinucleotide tetrazolium reductase (NADH-TR). Motor nerve terminals were demonstrated along the poles of bag1, bag2 and chain fibers by staining for cholinesterase (ChE). There was no consistent spatial correlation between the intensity of regional ATPase staining along the bag fibers and location, number or type of motor endings. However, most ChE deposits occurred in intrafusal fiber regions that displayed the greatest NADH-TR variability. Some fiber poles or whole intrafusal fibers were devoid of any ChE deposits but their ATPase and NADH-TR content was comparable to that of fibers bearing ChE deposits. The observations suggested that motor nerve fibers per se may not play a major role in determining the histoenzymatic content of intrafusal fibers.

Adenosine Triphosphatases↗