Slow solvent relaxation dynamics of nanometer sized reverse micellar systems through tryptophan metabolite, kynurenine.

Abstract:

:Exploration of environmental dynamics using intrinsic biological probe tryptophan is very important; however, it suffers from various difficulties. An alternative probe, kynurenine (KN), has been found to be an efficient probe for the ultrafast dynamics in the biological environment (Goswami et al., [2010] J. Phys. Chem. B., 114, 15236-15243). In the present study, we have investigated the efficacy of KN for the exploration of relatively slower dynamics of biologically relevant environments. A detailed investigation involving UV-Vis, steady-state/time-resolved fluorescence spectroscopy and Förster resonance energy transfer (FRET) studies on KN compared to a well-known solvation probe, H33258, a DNA-minor groove binder in a model nonionic reverse micelle reveals that ultrafast internal conversion associated with the hydrogen-bonding dynamics masks KN to become a dynamical reporter of the immediate environments of the probe.

journal_name

Photochem Photobiol

authors

Rakshit S,Goswami N,Pal SK

doi

10.1111/j.1751-1097.2011.01007.x

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

38-45

issue

1

eissn

0031-8655

issn

1751-1097

journal_volume

88

pub_type

杂志文章
  • Photochemical inactivation of Pseudomonas aeruginosa.

    abstract::Adaptability to a broad range of environments together with relatively high resistance to antibiotics and to disinfectants makes Pseudomonas aeruginosa a concern in hospitals and in public health. We investigated whether UVA-mediated photochemical inactivation of P. aeruginosa could be accomplished with high efficienc...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.2011.01029.x

    authors: Sagripanti JL,Grote G,Niederwöhrmeier B,Hülseweh B,Marschall HJ

    更新日期:2012-01-01 00:00:00

  • Ultraviolet B Inhibits Skin Wound Healing by Affecting Focal Adhesion Dynamics.

    abstract::As the most important interface between human body and external environment, skin acts as an essential barrier preventing various environmental damages, among which DNA-damaging UV radiation from the sun remains the major environmental risk factor causing various skin diseases. It has been well documented that wavelen...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12462

    authors: Liu H,Yue J,Lei Q,Gou X,Chen SY,He YY,Wu X

    更新日期:2015-07-01 00:00:00

  • Effect of light on expression of clock genes in Xenopus laevis melanophores.

    abstract::Light-dark cycles are considered important cues to entrain biological clocks. A feedback loop of clock gene transcription and translation is the molecular basis underlying the mechanism of both central and peripheral clocks. Xenopus laevis embryonic melanophores respond to light with melanin granule dispersion, respon...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12230

    authors: Magalhães Moraes MN,de Oliveira Poletini M,Ribeiro Ramos BC,de Lima LH,de Lauro Castrucci AM

    更新日期:2014-05-01 00:00:00

  • Contact transcleral ciliary body photodynamic therapy with verteporfin in pigmented rabbits: effect of repeated treatments.

    abstract::We studied the effect on the intraocular pressure (IOP) and the ciliary body (CB) morphology after four consecutive contact transcleral photodynamic treatments of the ciliary body (CB-PDT) with verteporfin in pigmented rabbits. Twenty-two pigmented rabbits underwent CB-PDT (study group), performed once (six rabbits) o...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.2009.00638.x

    authors: Charisis SK,Naoumidi II,Ginis HS,Detorakis ET,Tsilimbaris MK

    更新日期:2010-01-01 00:00:00

  • Encapsulation of p-THPP into nanoparticles: cellular uptake, subcellular localization and effect of serum on photodynamic activity.

    abstract::The cellular uptake, localization and efflux of meso-tetra-(4-hydroxyphenyl)porphyrin (p-THPP)-loaded nanoparticles have been studied in EMT-6 tumor cells. The effect of blood serum on photocytotoxicity has also been evaluated. Sub-130 nm nanoparticles based on poly(D,L-lactide-co-glycolide) (PLGA) (50:50 PLGA and 75:...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2003)077<0638:eopinc>2.0.co;2

    authors: Konan YN,Chevallier J,Gurny R,Allémann E

    更新日期:2003-06-01 00:00:00

  • Structure and conformation of photosynthetic pigments and related compounds 7. On the conformation of the methyl ester of (20-methyl-phytochlorinato)nickel(II)--a bacteriochlorophyll c model compound.

    abstract::The crystal and molecular structure of the title compound 4 have been determined by single crystal X-ray crystallography. The structure shows the typical S4-ruffled conformation observed for Ni(II) tetrapyrroles. Compared to the structure of the methyl ester of (13(2)-demethoxycarbonyl-pheophorbidato a)nickel(II), 4 s...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1994.tb05080.x

    authors: Senge MO,Smith KM

    更新日期:1994-08-01 00:00:00

  • Factors affecting M13 bacteriophage inactivation by methylene blue photosensitization.

    abstract::We have investigated the factors that affect the virucidal activity of methylene blue (MB) photosensitization. The M13 bacteriophage was more rapidly inactivated at higher temperatures (6 degrees C < 24 degrees C < 38 degrees C). Rate constants for inactivation were 0.072, 0.139 and 0.260 (log10 inactivation)/ (J/cm2)...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1997.tb01937.x

    authors: Abe H,Wagner SJ,Kuwabara M,Kamo N,Ikebuchi K,Sekiguchi S

    更新日期:1997-05-01 00:00:00

  • UVB-induced inflammatory cytokine release, DNA damage and apoptosis of human oral compared with skin tissue equivalents.

    abstract::People can get oral cancers from UV (290-400 nm) exposures. Besides high outdoor UV exposures, high indoor UV exposures to oral tissues can occur when consumers use UV-emitting tanning devices to either tan or whiten their teeth. We compared the carcinogenic risks of skin to oral tissue cells after UVB (290-320 nm) ex...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12030

    authors: Breger J,Baeva L,Agrawal A,Shindell E,Godar DE

    更新日期:2013-05-01 00:00:00

  • Multidimensional reaction coordinate for the excited-state H-atom transfer in perylene quinones: importance of the 7-membered ring in hypocrellins A and B.

    abstract::The excited-state intramolecular H-atom transfer reactions of hypocrellins B and A are compared by using time-resolved absorption and fluorescence upconversion techniques. The hypocrellin B photophysics are well described by a simple model involving one ground-state species and excited-state forward and reverse H-atom...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:

    authors: Datta A,Smirnov AV,Wen J,Chumanov G,Petrich JW

    更新日期:2000-02-01 00:00:00

  • Molecular mechanism of drug photosensitization. 7. Photocleavage of DNA sensitized by suprofen.

    abstract::Ultraviolet-A irradiation of a suprofen (2-[4-2(2-thenoyl) phenyl]propionic acid) (SPF) buffered solution (pH 7.4) in the presence of supercoiled pBR322 DNA leads to single strand breaks with the formation of an open circular form and subsequent linearization of the plasmid. On the basis of agarose gel electrophoresis...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1995.tb05252.x

    authors: Condorelli G,Constanzo LL,De Guidi G,Giuffrida S,Sortino S

    更新日期:1995-07-01 00:00:00

  • Sunscreen protection against ultraviolet radiation-induced pyrimidine dimers in mouse epidermal DNA.

    abstract::Pyrimidine dimers were measured in epidermal DNA of SKH:HR1 mice following exposure to solar-simulated UV radiation (SSUV, 290-400 nm) or to UVA (320-400 nm). Mice were exposed to SSUV or UVA after topical application (2 mg/cm2) of vehicle, a UVB absorber (5% 2-ethylhexyl p-methoxycinnamate [2-EHMC]), or a broad-spect...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1997.tb07961.x

    authors: Ley RD,Fourtanier A

    更新日期:1997-06-01 00:00:00

  • Promotion of photodynamic therapy-induced apoptosis by the mitochondrial protein Smac/DIABLO: dependence on Bax.

    abstract::Photodynamic therapy (PDT) using the second-generation photosensitizer phthalocyanine (Pc) 4 causes mitochondrial damage and induces apoptosis through the release of cytochrome c to the cytosol. Another protein of the mitochondrial intermembrane space, Smac/DIABLO (second mitochondria-derived activator of caspase/dire...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2002)076<0217:poptia>2.0.co;2

    authors: Usuda J,Chiu SM,Azizuddin K,Xue LY,Lam M,Nieminen AL,Oleinick NL

    更新日期:2002-08-01 00:00:00

  • Application of molecular orbital calculations to interpret the chlorophyll spectral forms in pea photosystem II.

    abstract::The energy and oscillator strength of electronic transitions of chlorophyll (Chl)-amino acid complexes were calculated by using molecular orbital methods. The energies varied widely with coordinated amino acids and the difference between the maximum and minimum energy was about 830 cm-1. This energy difference was com...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2001)073<0245:aomoct>2.0.co;2

    authors: Nishigaki A,Ohshima S,Nakayama K,Okada M,Nagashima U

    更新日期:2001-03-01 00:00:00

  • Attitudes, Beliefs, and Measures Taken by Parents to Protect Their Children from the Sun in Guangzhou City, China.

    abstract::Excessive sun exposure can cause sunburn, suntan, skin photoaging, and even skin cancer. Skin photoaging conflicts with the human pursuit of a young and beautiful appearance. Some research data indicate that the incidence of skin cancer in the Chinese has been increasing, although it remains lower than in whites. To e...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12623

    authors: Wan M,Hu R,Li Y,Wang Y,Xie X,Yue P,Guan L,Lai W

    更新日期:2016-09-01 00:00:00

  • Molecular mechanisms of ultraviolet radiation carcinogenesis.

    abstract::UV radiation is a potent DNA damaging agent and a known inducer of skin cancer in experimental animals. There is excellent scientific evidence to indicate that most non-melanoma human skin cancers are induced by repeated exposure to sunlight. UV radiation is unique in that it induces DNA damage that differs from the l...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审

    doi:10.1111/j.1751-1097.1990.tb08452.x

    authors: Ananthaswamy HN,Pierceall WE

    更新日期:1990-12-01 00:00:00

  • In vivo near-infrared Raman spectroscopy: demonstration of feasibility during clinical gastrointestinal endoscopy.

    abstract::Raman spectroscopy (RS) has potential for disease classification within the gastrointestinal tract (GI). A near-infrared (NIR) fiber-optic RS system has been developed previously. This study reports the first in vivo Raman spectra of human gastrointestinal tissues measured during routine clinical endoscopy. This was a...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2000)072<0146:IVNIRS>2.0.CO;2

    authors: Shim MG,Song LM,Marcon NE,Wilson BC

    更新日期:2000-07-01 00:00:00

  • Toward the molecular flashlight: preparation, properties, and photophysics of a hypericin-luciferin tethered molecule.

    abstract::The synthesis of a molecule containing hypericin and luciferin moieties joined by a tether is reported. The light-induced (in vitro) antiviral activity as well as the photophysical properties of this new compound are measured and compared with those of the parent compounds, hypericin and pseudohypericin. This tethered...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2002)076<0153:ttmfpp>2.0.co;2

    authors: Wen J,Chowdhury P,Wills NJ,Wannemuehler Y,Park J,Kesavan S,Carpenter S,Kraus GA,Petrich JW

    更新日期:2002-08-01 00:00:00

  • Reduction in DNA synthesis during two-photon microscopy of intrinsic reduced nicotinamide adenine dinucleotide fluorescence.

    abstract::Two-photon laser scanning microscopy (TPLSM) of endogenous reduced nicotinamide adenine dinucleotide (NAD(P)H) provides important information regarding the cellular metabolic state. When imaging the punctate mitochondrial fluorescence originating from NAD(P)H in a rat basophilic leukemia (RBL) cell at low laser powers...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/2004-08-05-RA-263

    authors: Nichols MG,Barth EE,Nichols JA

    更新日期:2005-03-01 00:00:00

  • Light quenching of fluorescence: a new method to control the excited state lifetime and orientation of fluorophores.

    abstract::Experimental studies have recently demonstrated that fluorescence emission can be quenched by laser light pulses from modern high-repetition rate lasers, a phenomenon we call "light quenching." In this overview article, we describe the possible effects of light quenching on the steady-state and time-resolved intensity...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1994.tb05147.x

    authors: Lakowicz JR,Gryczyński I,Kuśba J,Bogdanov V

    更新日期:1994-12-01 00:00:00

  • DNA damage checkpoint responses in the S phase of synchronized diploid human fibroblasts.

    abstract::We investigated the hypothesis that the strength of the activation of the intra-S DNA damage checkpoint varies within the S phase. Synchronized diploid human fibroblasts were exposed to either 0 or 2.5 J m(-2) UVC in early, mid- and late-S phase. The endpoints measured were the following: (1) radio-resistant DNA synth...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12361

    authors: Chastain PD 2nd,Brylawski BP,Zhou YC,Rao S,Chu H,Ibrahim JG,Kaufmann WK,Cordeiro-Stone M

    更新日期:2015-01-01 00:00:00

  • Effect of Light Environment on Growth and Phenylpropanoids of Yarrow (Achillea collina cv. SPAK) Grown in the Alps.

    abstract::A 2-year field study on the effect of different light environments, obtained by using cladding materials (polyethylene films and shade net) able to cut off specific regions of the photosynthetically active radiation and ultraviolet wavebands, on the growth and phenylpropanoids content of Achillea collina grown in the ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12150

    authors: Giorgi A,Manzo A,Vagge I,Panseri S

    更新日期:2014-01-01 00:00:00

  • Oxygen limitation of direct tumor cell kill during photodynamic treatment of a murine tumor model.

    abstract::The relationship between levels of in vivo accumulated photosensitizer (Photofrin II), photodynamic cell inactivation upon in vitro or in vivo illumination, and changing tumor oxygenation was studied in the radiation-induced fibrosarcoma (RIF) mouse tumor model. In vivo porphyrin uptake by tumor cells was assessed by ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1989.tb04110.x

    authors: Henderson BW,Fingar VH

    更新日期:1989-03-01 00:00:00

  • Pluronic F-127: An Efficient Delivery Vehicle for 3-(1'-hexyloxy)ethyl-3-devinylpyropheophorbide-a (HPPH or Photochlor).

    abstract::To determine the impact of delivery vehicles in photosensitizing efficacy of HPPH, a hydrophobic photosensitizer was dissolved in various formulations: 1% Tween 80/5% dextrose, Pluronic P-123 and Pluronic F-127 in 0.5%, 1% and 2% phosphate buffer solutions (PBS). HPPH was also conjugated to Pluronic F-127, and the res...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.13183

    authors: Cacaccio J,Durrani F,Cheruku RR,Borah B,Ethirajan M,Tabaczynski W,Pera P,Missert JR,Pandey RK

    更新日期:2020-05-01 00:00:00

  • Facile Fabrication of Porous ZnS and ZnO Films by Coaxial Electrospinning for Highly Efficient Photodegradation of Organic Dyes.

    abstract::Porous ZnS and ZnO nano-crystal films were fabricated via a three-step procedure. First, Zn(CH3 COO)2 /Silk Fibroin nanofiber mats were prepared by coaxial electrospinning. Second, Zn(CH3 COO)2 /Silk Fibroin mats were immersed in NaS solution to react with S2- to obtain ZnS/Silk Fibroin nanofiber mats. Finally, ZnO po...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12836

    authors: Wang H,Liang L,Cheng X,Luo Y,Sun S

    更新日期:2018-01-01 00:00:00

  • Biological weighting function for the mortality of Boeckella gracilipes (Copepoda, Crustacea) derived from experiments with natural solar radiation.

    abstract::We performed in situ experiments during the austral summer of 1998 to quantify the mortality of the fresh-water copepod Boeckella gracilipes as a function of the UV dose. The copepods were exposed to solar radiation at the water-surface for approximately 24-34 h. Long-pass cut-off filters (Schott) were used in the exp...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2000)072<0314:bwfftm>2.0.co;2

    authors: Tartarotti B,Cravero W,Zagarese HE

    更新日期:2000-09-01 00:00:00

  • The Anthocyanins, Oenin and Callistephin, Protect RPE Cells Against Oxidative Stress.

    abstract::The retinal pigment epithelium (RPE) is a highly metabolic layer of postmitotic cells lining Bruch's membrane in the retina. While these cells contain endogenous photosensitizers that mediate blue light-induced damage, it has also been shown that blue light exposure damages mitochondrial DNA in RPE cells resulting in ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12683

    authors: Yacout SM,Gaillard ER

    更新日期:2017-03-01 00:00:00

  • UVA exposure affects UVB and cis-urocanic acid-induced systemic suppression of immune responses in Listeria monocytogenes-infected Balb/c mice.

    abstract::Ultraviolet radiation can inhibit immune responses locally as well as systemically. Such effects have been measured in animals and humans exposed to ultraviolet B (wavelength 280-315 nm) (UVB) and ultraviolet A (315-400 nm) (UVA). The precise wavelength dependence is important for the identification of possible molecu...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1562/0031-8655(2001)073<0432:UEAUAC>2.0.CO;2

    authors: Garssen J,de Gruijl F,Mol D,de Klerk A,Roholl P,Van Loveren H

    更新日期:2001-04-01 00:00:00

  • The effect of charge on cellular uptake and phototoxicity of polylysine chlorin(e6) conjugates.

    abstract::The effect of charge on the cellular uptake, localization and phototoxicity of conjugates between chlorin(e6) (ce6) and poly-L-lysine was studied in vitro. These conjugates (average MW 35-55 kDa) were synthesized to have polycationic, polyanionic or neutral charges. Two human cell lines (A431 epidermoid carcinoma cell...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1997.tb01916.x

    authors: Soukos NS,Hamblin MR,Hasan T

    更新日期:1997-04-01 00:00:00

  • Photochemically induced binding of Rh(phen)2Cl2+ to DNA.

    abstract::The photoinduced covalent binding of the title compound to native and heat denatured DNA is described. The level of binding has been measured by UV (for DNA) and atomic absorption (for Rh) analysis. Quantum efficiencies of 6.4 x 10(-4) mol Rh per mol photons and 1.6 x 10(-3) mol Rh per mol photons have been determined...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/j.1751-1097.1989.tb09204.x

    authors: Mahnken RE,Bina M,Deibel RM,Luebke K,Morrison H

    更新日期:1989-04-01 00:00:00

  • Validation and application of a model of oxygen consumption and diffusion during photodynamic therapy in vitro.

    abstract::The photophysical parameters for the photosensitizer Pd(II) meso-Tetra(4-carboxyphenyl) porphine (PdT790) acquired in a previous study were incorporated into the PDT oxygen diffusion models for cell suspensions and cell monolayers. The time-dependent phosphorescence signals generated by the diffusion models are shown ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章

    doi:10.1111/php.12320

    authors: Weston MA,Patterson MS

    更新日期:2014-11-01 00:00:00