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The effects of a newly discovered antifungal agent, pramanicin, on cytosolic Ca 2+ and cell viability of cultured bovine pulmonary artery endothelial cells and on endothelium-dependent relaxation of dog carotid arterial rings were investigated by digital dynamic fluorescence ratio imaging and morphological and contractility studies, respectively. Pramanicin 100 μM, previously shown to...
To investigate their potentially toxic effects on mammalian vascular smooth muscle, pentane extracts of papaya seeds and the chief active ingredient in the extracts, benzyl isothiocyanate (BITC), were tested for their effects on the contraction of strips of dog carotid artery. BITC and the papaya seed extract caused relaxation when added to tissue strips that had been pre-contracted with phenylephrine...
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