coproporphyrin/hypoxia

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Effects of plasma membrane ABCB6 on 5-aminolevulinic acid (ALA)-induced porphyrin accumulation in vitro: tumor cell response to hypoxia.

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BACKGROUND Currently, 5-aminolevulinic acid-based photodynamic diagnosis (ALA-PDD) is used to detect tumors during surgery and exploit tumor-specific accumulation of protoporphyrin IX (PpIX) after administration of ALA. In a recent study, we showed that the human ATP-binding cassette transporter

Bactenecin 7 peptide fragment as a tool for intracellular delivery of a phosphorescent oxygen sensor.

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Research on cell-penetrating peptides for the intracellular delivery of porphyrin compounds has mainly focused on the use of trans-activator of transcription (TAT)-derived peptides and, to a lesser extent, on proline-rich peptides and phosphorescent metalloporphyrins. In this article, we describe a

Imaging of phosphorescence: a novel method for measuring oxygen distribution in perfused tissue.

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The imaging of phosphorescence provides a method for monitoring oxygen distribution within the vascular system of intact tissues. Isolated rat lives were perfused through the portal vein with media containing palladium coproporphyrin, which phosphoresced and was used to image the liver at various

Anoxic decrease in potassium outward currents of hippocampal cultured neurons in absence and presence of dithionite.

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The effect of brief anoxia on voltage dependent K(+)-currents of hippocampal cultured neurons was studied. The oxygen scavenger dithionite (hydrosulphite) was previously used for creating zero oxygen pressure. However, dithionite consumes O(2) in parallel with generation of superoxide radicals and

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