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Biomedical subjects

H Keller

Publications and source records attributed to H Keller.

At least 307 records · Page 17Linked to original sources
PubMed1979

Problems of identification in the clinical laboratory, state of the art and other considerations.

In recent years, there have been no new commercial developments in identification methods for the clinical chemical laboratory. We are still faced, however, with the problem of ensuring accurate identification. By using a model, the importance of reliable identification can be shown mathematically. The complete identification of a sample is based on a five point identification statement. As a rule, appropriate measures are taken to abridge this identification process, depending on the local situation. The terminology of identification processes is defined and the presently available techniques are discussed.

Computers↗
PubMed1979

[Problems of object recognition].

Various methods for automatic thresholding and their performance in routine work are discussed with lung and bone sections serving as examples. This includes the special cases of interference by small particles of intensities comparable to the phase of interest and the detection of a phase with small area density.

Bone and Bones↗
PubMed1979

[The effect of subtotal vagotomy of the plexus myentericus (Auerbach) on the function of the intramural nervous system. A quantitative histochemical examination in white laboratory mice].

The effect of a subtotal vagotomy on the function of the intramural nervous system of different parts of the intestinal tract is studied by means of quantitative measurements of the acetylcholinesterase (AChE) activity. By sham vagotomy it was possible to explore the effect of narcosis and laparotomy on the intramural nervous system of the intestine. Vagotomy is followed by a decrease in AChE activity of the ganglionic cells in all parts of the intestinal tract. A minimum of activity, about 50% of the normal concentration, is attained at the 16th postoperative day. After this time, a continual increase in AChE activity, along with a reactivation of the function of the ganglionic cells, can be observed. 90 days after vagotomy the ganglionic cells of the intramural nervous plexus show a normal enzyme activity. These results support the hypothesis that most of the cells of the myenteric plexus build up an autonomic nervous plexus, which is stimulated in an excitatory way by the vagus nerve and which will be inhibited by sympathetic stimulation.

Acetylcholinesterase↗
PubMed1979

[The use of reptilase for electrophoresis of heparinized plasma (author's transl)].

Fibrinogen can be precipitated from Heparin-plasma by Reptilase (Batroxobin). The electrophoretic pattern of the supernatant on cellulose acetate is nearly identical with that of the corresponding serum. This technique is also useful in differentiating a gradient of fibrinogen (caused by effects of anticoagulants) from a myeloma peak.

Batroxobin↗
PubMed1978

[The variation of 16 serum protein fractions following renal transplantation (author's transl)].

We have investigated 16 serum proteins in 20 patients with stable renal function after renal transplantation. Our investigations have shown the following substantial findings: a regular increase of prealbumin, alpha1-glycoprotein, haptoglobin, hemopexin and beta2-glycoprotein, as well as a rather frequent increase of alpha 2-macroglobulin. As far as variations of the serum protein levels are concerned there was no correlation with kidney disease, accompanying illnesses, therapy or interval since transplantation.

Adult↗
PubMed1978

[Measures in cases of suspected rabies exposure].

Criteria are discussed for evaluating cases in which exposure to rabies is to be suspected. Due to an incubation period generally exceeding 20 days, active immunization can be performed even after exposure. Vaccination programs current in Switzerland and indications for additional passive immune prophylaxis are discussed. In every case, local wound treatment remains essential.

Animals↗