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Biomedical subjects

A Wottawa

Publications and source records attributed to A Wottawa.

28 records · Page 2Linked to original sources
PubMed1976

[The effect of uricosuric and uricostatic drugs on DNA metabolism].

Some of the drugs, which are used in therapy of gout were tested with respect to their influence on semi-conservative DNA-synthesis and DNA-repair in vitro, using different cell systems. The agents (Benzbromarone, Allopurinol, Thiopurinol) were investigated in concentrations similar to blood-levels in normal therapy. The cells were irradiated with ultraviolet or ionizing radiation in order to damage their DNA and DNA-repair (unscheduled DNA-synthesis) was estimated by measuring the incorporation of radioactively labeled thymidine into acid insoluble material under appropriate conditions. The substances showed different effects on DNA-synthesis as well as on DNA-repair, even then, when their supposed influence on enzymes of nucleotide metabolism, was similar.

Allopurinol↗
PubMed1975

[The effect of so-called basic therapeutics and symptomatically effective antirheumatic drugs on the enzymes of DNA synthesis and DNA repair].

Investigation of DNA-synthesis and DNA-repair are important for evaluating mutagenic effects of drugs. Among the tested non steroidal antirheumatic drugs metiacinic acid, ketoprofene, and azapropazone do not show any effect on these mechanisms. Tolmetin and indometacine, however, inhibit DNA-synthesis only, whereas naproxene, oxyphenylbutazone, and flufenamic acid inhibit both DNA synthesis and repair. Gold does not influence DNA synthesis or repair, D-penicillamine inhibits DNA-synthesis only. However, Chloroquine and metabolised cyclophosphamide respecitvely impair both DNA-synthesis and repair. This effect may be also caused by azathioprine in high dosage. Application of two repair- inhibitors or of one DNA-repair-inhibitor and one directly mutagenic acting drug, e.g. cyclophosphamide, should therefore be avoided.

Apazone↗
PubMedDate not supplied

[Local and systemic parameters in the synovial milieu].

Our own results as well as recent data from the literature confirm the already long known fact, that synovial fluid analysis allows only in very few diseases as for example a crystal synovitis a definite diagnosis in the individual case. In the majority of the patients this technique permits only to differentiate between inflammatory and non-inflammatory joint disease as well as an estimation of the local inflammatory activity of joint. The simultaneous histologic examination of synovial membrane according to our experience seems to bring no major additional information which exceeds the information given by each technique alone.

Acid Phosphatase↗