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Enzymatic method for formaldehyde assay, based on formaldehyde dehydrogenase from the recombinant strain of the yeast Hansenula polymorpha, was developed. Linear detection range for the proposed method was estimated to be from 0.01 to 0.05 mM, and sensitivity of the assay (or detection limit) was determined as 0.007 mM. In comparison with the known methods,(More)
Iontophoresis (IOP) is a noninvasive method of delivering medication transcutaneously through the skin. The electrodes used in this method should tightly fit to rough and irregular surfaces and be biologically safe, easy to handle and prepare, and cost-effective. To satisfy these requirements, calcium alginate gel can be a candidate electrode for IOP. Using(More)
Calcium alginate gel has some unique properties, such as the capability to keep the drugs, bioadhesiveness, safety, and low cost. The purpose of this study is to determine whether calcium alginate gel can be used as a matrix of electrodes for iontophoresis (IOP). We measured the concentration of lidocaine transported from calcium alginate gels with various(More)
It was shown that the seaweed sulfopolysaccharides Furcellaria and Phyllophora--furcellaran and phyllophoran--are the competitive inhibitors of thrombin-induced fibrinogen clotting. Biospecific adsorbents for thrombin and antithrombin III (AT III) isolation were synthesized with heparin, phyllophoran and furcellaran as ligands on aminopropylsilochrome and(More)
The aim of this study was to determine transport of lidocaine ions through a hairless rat skin in vivo and to compare the efficacy of alternating current (AC) with that of direct current (DC) iontophoresis (IOP). We measured the concentration of lidocaine transported through a cellophane membrane or a hairless rat dorsal skin applying either AC-IOP or(More)
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