Biomedical subjects

M Jansa

Publications and source records attributed to M Jansa.

17 recordsLinked to original sources

PubMed1996

Human insulin-induced lipoatrophy. Successful treatment using a jet-injection device.

OBJECTIVE: To evaluate the efficacy of the administration of insulin by a jet-injector device in stopping and reversing severe human insulin-induced lipoatrophy. CASE: We report a case of a woman with severe human insulin-induced lipoatrophy who has been treated exclusively with recombinant DNA human insulin since the onset of IDDM. RESULTS: The loss of subcutaneous tissue in the injection areas was demonstrated and measured by high-frequency ultrasound. Dermatologic exam demonstrated a severe reduction of fat tissue. After 8 months of administration of human insulin by a jet injector, there were no more new lesions of lipoatrophy and those affected areas were substantially ameliorated. CONCLUSIONS: Jet-injection devices might constitute a helpful method to treat those patients affected by severe human insulin-induced lipoatrophy.

Adult↗

PubMed1989

[Roentgenologic phenotype in syndromes associated with congenital heart defects].

In a group of children with congenital heart disease in 10.7% concurrently skeletal anomalies were observed (1085 children) and in 10.5% anomalies of the upper urinary pathways (1807 children). The authors describe X-ray findings in syndromes of anomalies most frequently associated with congenital heart disease.

Abnormalities, Multiple↗

PubMed1984

Direct measurement of antibody affinity distribution by hapten-inhibition enzyme immunoassay.

A rapid, simple and reliable technique for determining the affinities of antibody subpopulations in a complex mixture is described. The principle of this method is that antigen conc can be represented as the amount of antigen immobilized on the polystyrene surface of a microwell containing a fixed vol of diluted antibody. Thus, by measuring the proportion of antibody bound to different wells coated with varying amounts of antigen, it is a straightforward matter to calculate an affinity distribution. We have verified that: (1) the amount of antigen bound to a polystyrene plate is proportional to the concn of antigen used for sensitization and follows a typical saturation curve; (2) the antibodies bound to plates sensitized with low concns of antigen are of higher affinity than those bound to plates sensitized with high concns of antigen; (3) an apparent affinity constant (aK) is defined as the reciprocal concn of free hapten required for 50% inhibition of antibody binding to immobilized antigen; (4) the aK determined by this method is in close agreement with the intrinsic affinity constant (K) measured by fluorescence quenching or the Farr assay; and (5) that during the course of immunization in vivo there is a clear shift to higher-affinity antibody subpopulations.

Animals↗

PubMed1984