psoralen/carie dentaria

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Polymeric monolith column composited with multiwalled carbon nanotubes-β-cyclodextrin for the selective extraction of psoralen and isopsoralen.

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A polymeric column that contains multiwalled carbon nanotubes-β-cyclodextrin composite was developed. The composite was wrapped into the poly(butyl methacrylate-ethylene dimethacrylate) monolith column (0.76 mm id and 10 cm in length). The column was then applied for the online solid-phase

Molecular cloning and functional characterization of psoralen synthase, the first committed monooxygenase of furanocoumarin biosynthesis.

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Ammi majus L. accumulates linear furanocoumarins by cytochrome P450 (CYP)-dependent conversion of 6-prenylumbelliferone via (+)-marmesin to psoralen. Relevant activities, i.e. psoralen synthase, are induced rapidly from negligible background levels upon elicitation of A. majus cultures with

Study of DNA accessibility in the condensed chromatin structures by resonance energy transfer.

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The linker DNA accessibility of chicken erythrocyte chromatin was studied by diffusion-enhanced resonance energy transfer (DERET). The 4″-{9‴-[((4-carboxy-3-hydroxyphenyl)-acetatamido)-3‴,6‴,9‴-(triacetyl)-3″,6‴,9‴-triazanonamido]-2″,6″-diazanonyl}-4,5',8-trimethyl psoralen-terbium complex was

Tests of spool models for DNA packaging in phage lambda.

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Experiments are reported which bear on two spool models proposed for packaging the DNA of phage lambda. Both spool models fill an assumed spherical cavity with DNA wrapped in cylindrical or quasi-cylindrical layers composed of adjacent circular turns. In the curved-spool model, a single continuous

In silico identification of PAP-1 binding sites in the Kv1.2 potassium channel.

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Voltage-gated potassium channels of the Kv1 family play a crucial role in the generation and transmission of electrical signals in excitable cells affecting neuronal and cardiac activities. Small-molecule blockage of these channels has been proposed to occur via a cooperative mechanism involving two

Inhibition of Voltage-Gated K+ Channel Kv1.5 by Antiarrhythmic Drugs.

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Molecular dynamics simulations are employed to determine the inhibitory mechanisms of three drugs, 5-(4-phenoxybutoxy)psoralen (PAP-1), vernakalant, and flecainide, on the voltage-gated K+ channel Kv1.5, a target for the treatment of cardiac arrhythmia. At neutral pH, PAP-1 is neutral, whereas the

HIV/AIDS-associated Kaposi's sarcoma with multiple skin-mucosal disseminations following ultraviolet (puva) photochemotherapy.

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HIV/AIDS infection in Bulgaria has spread over about 1200 registered patients and it is supposed that the number of the undetected cases is four times higher. Kaposi's sarcoma is rarely observed in our country and no cutaneous-mucosal dissemination is reported for the time being. OBJECTIVE The aim

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