Results 31 to 40 of about 129,557 (299)

Porphyrin-Induced Protein Oxidation and Aggregation as a Mechanism of Porphyria-Associated Cell InjurySummary

open access: yesCellular and Molecular Gastroenterology and Hepatology, 2019
Genetic porphyrias comprise eight diseases caused by defects in the heme biosynthetic pathway that lead to accumulation of heme precursors. Consequences of porphyria include photosensitivity, liver damage and increased risk of hepatocellular carcinoma ...
Dhiman Maitra   +5 more
doaj   +1 more source

Electronic structure of an iron porphyrin derivative on Au(1 1 1) [PDF]

open access: yes, 2018
Surface-bound porphyrins are promising candidates for molecular switches, electronics and spintronics. Here, we studied the structural and the electronic properties of Fe-tetra-pyridil-porphyrin adsorbed on Au(1 1 1) in the monolayer regime.
Czekelius, Constantin   +5 more
core   +2 more sources

Porphyrin-Based Nanomaterials for the Photocatalytic Remediation of Wastewater: Recent Advances and Perspectives

open access: yesMolecules
Self-organized, well-defined porphyrin-based nanostructures with controllable sizes and morphologies are in high demand for the photodegradation of hazardous contaminants under sunlight.
Nirmal Kumar Shee, Hee-Joon Kim
doaj   +1 more source

Translational and rotational motions of albumin sensed by a non-covalent associated porphyrin under physiological and acidic conditions: a fluorescence correlation spectroscopy and time resolved anisotropy study. [PDF]

open access: yes, 2008
The interaction between a free-base, anionic water-soluble porphyrin, TSPP, and the drug carrier protein, bovine serum albumin (BSA) has been studied by time-resolved fluorescence anisotropy (TRFA) and fluorescence correlation spectroscopy (FCS) at two ...
Andrade, S.M.   +4 more
core   +2 more sources

Evaluation of the correlation between porphyrin accumulation in cancer cells and functional positions for application as a drug carrier

open access: yesScientific Reports, 2021
Porphyrin derivatives accumulate selectively in cancer cells and are can be used as carriers of drugs. Until now, the substituents that bind to porphyrins (mainly at the meso-position) have been actively investigated, but the effect of the functional ...
Koshi Nishida   +3 more
doaj   +1 more source

Bis-Porphyrin Racks with Space-Separated Co-Planar Porphyrin Rings

open access: yesMolecules, 2001
A porphyrin appended norbornenyl building block 8 has been isolated and coupled, using a 1,3-dipolar ACE reaction, to yield bis-porphyrin compounds in which the porphyrin moietes are angled upward relative to the norbornane backbone.
Martin R. Johnston
doaj   +1 more source

Probing the origin of fluorescence quenching of graphene-porphyrin hybrid material [PDF]

open access: yes, 2012
We report transient absorption spectroscopic studies on the hybrid material composed of porphyrin molecules covalently attached to graphene for investigating the mechanism underlying the reported fluorescence quenching of porphyrin in the hybrid [1 ...
Browne, W.R.   +5 more
core   +1 more source

Gallium (III)-metalloporphyrin grafted magnetite nanoparticles for fluoride removal from aqueous solutions [PDF]

open access: yes, 2017
Fluoride is a critical micronutrient for human health and is usually ingested through food and drinking water. This technique has done in monitoring the concentration of fluoride in water complications at mining operation that it effects on the ...
Asgari, Behnoosh, Bowen, James
core   +1 more source

Synthesis and characterization of ether-linked porphyrins [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2009
The ether-linked porphyrin dimers in this research work were prepared from coupling reaction between suitableporphyrin precursors and linkers in the presence of potassium carbonate.
Radchada Buntem   +2 more
doaj  

Oxygen and Conformation Dependent Protein Oxidation and Aggregation by Porphyrins in Hepatocytes and Light-Exposed CellsSummary

open access: yesCellular and Molecular Gastroenterology and Hepatology, 2019
Background & Aims: Porphyrias are caused by porphyrin accumulation resulting from defects in the heme biosynthetic pathway that typically lead to photosensitivity and possible end-stage liver disease with an increased risk of hepatocellular carcinoma ...
Dhiman Maitra   +12 more
doaj   +1 more source

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