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Biomedical subjects

P Kot

Publications and source records attributed to P Kot.

7 recordsLinked to original sources

[Correlations between the properties and effects of clinical therapy using textile material with antipsoriatic action].

The aim of the study was to design a textile material as a carrier for dermatological drugs. Cotton fabric was chosen for experimentation to be a fibrous support for the system. Additional components were a drug carrier in form of synthetic hydrogel impregnation (partially crosslinked poly(acrylic acid) and a bioactive agent dithranol) dispersed within the gel. The rate of release of the drug from the fibrous system was measured in aqueous media and depended on the concentration of dithranol. The structure and physical properties of the material were designed and controlled in order to ensure the optimal contact with the skin. Clinical studies were carried out with psoriatic patients. The results of the treatment with the textile material containing dithranol were presented using a computer optimalization method. In conclusion it was asserted that this type of textile-based medical device is effective and in many respects more convenient and less troublesome alternative in the treatment of psoriasis as compared to conventional treatments with dithranol suspended in ointments and creams.

Administration, Cutaneous↗

Responses to leukotriene C4 in the perfused rat lung.

The isolated rat lung was used to study both the effect of leukotriene C4 on pulmonary perfusion pressure and the synthesis and release of cyclooxygenase products in the pulmonary circulation. A cell-free perfusate was passed only once through the pulmonary circulation or was recirculated. During single transit, leukotriene C4 produced dose-dependent increases in pulmonary perfusion pressure that were abolished by FPL-55712, a leukotriene receptor antagonist, but were not altered significantly by indomethacin. The duration of the pulmonary pressor response to leukotriene C4 was markedly prolonged during recirculation compared to single transit. Leukotriene C4 also induced dose-dependent increases in effluent levels of 6-keto-prostaglandin F1 alpha and thromboxane B2 that were attenuated by indomethacin or FPL-55712 pretreatment. We conclude that leukotriene C4 directly constricts the pulmonary vasculature independent of cyclooxygenase products, is not rapidly degraded by the pulmonary circulation and stimulates the release of cyclooxygenase products in the pulmonary circulation that can be attenuated by pretreatment with indomethacin or FPL-55712.

6-Ketoprostaglandin F1 alpha↗