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Literature DB >> 19513819

A novel squarylium dye for monitoring oxidative processes in lipid membranes.

Valeriya M Trusova¹, Galyna P Gorbenko, Todor Deligeorgiev, Nikolai Gadjev, Aleksey Vasilev.

Abstract

A novel squaraine probe SQ-1 has been found to be appropriate for monitoring the peroxidation processes in membrane systems. Formation of free radicals was triggered by methemoglobin (metHb) or cytochrome c (cyt c) binding to the model lipid membranes composed of zwitterionic lipid phosphatidylcholine (PC) and anionic lipid cardiolipin (CL). Protein association with the lipid vesicles was followed by drastic quenching of SQ-1 fluorescence. The observed spectral changes were suppressed in the presence of free radical scavengers, butylated hydroxytoluene (BHT) and thiourea (TM) suggesting that SQ-1 decolorization can be attributed to its reactions with lipid radicals.

Entities: Chemical Gene

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Year: 2009 PMID： 19513819 DOI： 10.1007/s10895-009-0501-z

Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217

23 in total

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Journal: Methods Enzymol Date: 2003 Impact factor: 1.600

4. Investigation of the spectral properties of a squarylium near-infrared dye and its complexation with Fe(III) and Co(II) ions.

Authors: Leila Tarazi; Nara Narayanan; John Sowell; Gabor Patonay; Lucjan Strekowski
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5. Development of novel fluorescence probes that can reliably detect reactive oxygen species and distinguish specific species.

Authors: Ken-ichi Setsukinai; Yasuteru Urano; Katsuko Kakinuma; Hideyuki J Majima; Tetsuo Nagano
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6. Pro-oxidant effects of cross-linked haemoglobins explored using liposome and cytochrome c oxidase vesicle model membranes.

Authors: M S Rogers; R P Patel; B J Reeder; P Sarti; M T Wilson; A I Alayash
Journal: Biochem J Date: 1995-09-15 Impact factor: 3.857

A novel squarylium dye for monitoring oxidative processes in lipid membranes.

1. A europium-ion-based luminescent sensing probe for hydrogen peroxide.

2. Phosphorus assay in column chromatography.

3. Extrusion technique to generate liposomes of defined size.

4. Investigation of the spectral properties of a squarylium near-infrared dye and its complexation with Fe(III) and Co(II) ions.

5. Development of novel fluorescence probes that can reliably detect reactive oxygen species and distinguish specific species.

6. Pro-oxidant effects of cross-linked haemoglobins explored using liposome and cytochrome c oxidase vesicle model membranes.

7. NMR spin trapping: detection of free radical reactions with a new fluorinated DMPO analog.

8. Oxidative interactions between haemoglobin and membrane lipid. A liposome model.

9. Hemoglobin. A biologic fenton reagent.

10. Nitroxidation, nitration, and oxidation of a BODIPY fluorophore by RNOS and ROS.

1. Fluorescence study of the membrane effects of aggregated lysozyme.

2. Cytochrome c-lipid interactions: new insights from resonance energy transfer.