Comparison of nonmetal and metal hydrophilic photosensitizer, ATX-S10 (Na) and ATN-2, binding with human serum proteins using spectrophotometry.

abstract：:Cyamemazine (CMZ) is a neuroleptic drug that mediates cutaneous phototoxicity in humans. Here, the photobehavior of CMZ has been examined within α1 -acid glycoproteins, β- and γ-cyclodextrins and SDS micelles. In all these microenvironments, CMZ emission was enhanced and blue-shifted, and its lifetime was longer. Irra...

journal_title：Photochemistry and photobiology

authors： Limones-Herrero D,Pérez-Ruiz R,Jiménez MC,Miranda MA

更新日期：2014-09-01 00:00:00

abstract：:These experiments tested the hypothesis that phototropic bending arises when a light gradient across the stem differentially inhibits cell elongation because of direct inhibition of cell elongation by light (the Blaauw hypothesis). Continuous irradiation of dark-grown cucumber seedlings (Cucumis sativus L.) with unil...

journal_title：Photochemistry and photobiology

authors： Cosgrove DJ

更新日期：1985-01-01 00:00:00

abstract：:Pheophorbide a-induced photo-oxidation, in vitro, of cytochrome c oxidase and cytochrome c results in irreversible modifications to both protein components. Photo-oxidation of cytochrome c, as exhibited by change in its heme oxidation state, displays exponential kinetics and is detected with a lag period. Both the pho...

journal_title：Photochemistry and photobiology

authors： Chernomorsky S,Wong C,Poretz RD

更新日期：1992-02-01 00:00:00

abstract：:Reflectance spectrophotometry from 400 to 800 nm on different cutaneous pigmented lesions, including primary and metastatic malignant melanoma, pigmented nevi, lentigo and seborrhoeic keratosis, has been performed by using an external integrating sphere coupled to a spectrophotometer. Measurements show that reflectanc...

journal_title：Photochemistry and photobiology

authors： Marchesini R,Brambilla M,Clemente C,Maniezzo M,Sichirollo AE,Testori A,Venturoli DR,Cascinelli N

更新日期：1991-01-01 00:00:00

abstract：:1-Hydroxybenzotriazole and 1-hydroxypyridine-2-thione were incorporated as ligands with the cluster Ru3(CO)10 (NCMe)2 to give [(mu-H)Ru3(CO)10(mu2-2,3-eta2-NNN(O)C6 H4)] and [(mu-H)Ru3(CO)9(mu2-eta1 : eta2-C5H4N(O)S)], respectively. Irradiation of these two new triruthenium metal clusters individually with 350 nm UV l...

journal_title：Photochemistry and photobiology

authors： Hwu JR,Kuang-Lieh L,Yu SF,Yu LJ,Kumaresan S,Lin KJ,Tsay SC

更新日期：2002-05-01 00:00:00

abstract：:Photodynamic therapy (PDT) with photosensitizer verteporfin is a clinically approved vascular disrupting modality that is currently in clinical trial for cancer treatment. In this study, we evaluated PDT in combination with either mTORC1 inhibitor rapamycin or mTORC1/C2 dual inhibitor AZD2014 for therapeutic enhanceme...

journal_title：Photochemistry and photobiology

authors： Kraus D,Palasuberniam P,Chen B

更新日期：2020-03-01 00:00:00

abstract：:Aqueous solutions of KI were examined for use as chemical actinometers to measure 254 nm (germicidal) radiation. Irradiation results in electron ejection from iodide such that aqueous electrons and iodine atoms are formed. In the presence of N2O, an electron scavenger, recombination of these two reactive species is el...

journal_title：Photochemistry and photobiology

authors： Rahn RO

更新日期：1993-12-01 00:00:00

abstract：:Photodynamic therapy (PDT) of solid tumors elicits a strong, acute inflammatory response characterized by a rapid and massive infiltration of activated neutrophils into the tumor. The present study investigated the impact of PDT on the systemic and local (treatment site) kinetics of neutrophil trafficking and activity...

journal_title：Photochemistry and photobiology

authors： Cecic I,Parkins CS,Korbelik M

更新日期：2001-11-01 00:00:00

abstract：:Plastoglobules are lipoprotein particles contained in chloroplasts and other plastids. They have long been regarded as lipid storage droplets. New results now indicate that plastoglobules actively participate in prenylquinone and other metabolic pathways. Structural work shows physical attachment of plastoglobules to ...

journal_title：Photochemistry and photobiology

authors： Bréhélin C,Kessler F

更新日期：2008-11-01 00:00:00

abstract：:Phototherapy with broadband UVB is an effective treatment for inflammatory dermatoses. A newly developed fluorescent UVB lamp (Philips TL01) that emits a narrowband UVB around 311 nm was shown to be superior for the phototherapy of psoriasis. In order to contribute to the knowledge about the carcinogenic potential of ...

journal_title：Photochemistry and photobiology

authors： Tzung TY,Rünger TM

更新日期：1998-06-01 00:00:00

abstract：:To determine the origin of the UV-specific CC to TT tandem mutation at the CC site, we made a duplex DNA decamer containing a uracil cis-syn cyclobutane dimer (CBD) as the deaminated model of a cytosine dimer. Two-dimensional 1H-NMR spectroscopy studies were performed on this sequence where two adenines (Ade) were opp...

journal_title：Photochemistry and photobiology

authors： Lee HM,Kim JK

更新日期：2002-10-01 00:00:00

abstract：:UVB radiation contributes to both direct and indirect damage to the skin including the generation of free radicals and reactive oxygen species (ROS), inflammatory responses, immunosuppression and gene mutations, which can ultimately lead to photocarcinogenesis. A plant-derived flavonoid, baicalin, has been shown to ha...

journal_title：Photochemistry and photobiology

authors： Min W,Ahmad I,Chang ME,Burns EM,Qian Q,Yusuf N

更新日期：2015-11-01 00:00:00

abstract：:Photodynamic therapy (PDT) uses laser light to activate a photosensitizer that has been absorbed preferentially by cancer cells after systemic administration. A phototoxic reaction ensues resulting in cell death and tissue necrosis. Some cells, however, may survive PDT. This study was performed to determine if survivi...

journal_title：Photochemistry and photobiology

authors： Hornung R,Walt H,Crompton NE,Keefe KA,Jentsch B,Perewusnyk G,Haller U,Köchli OR

更新日期：1998-10-01 00:00:00

abstract：:Photodynamic therapy (PDT) appears as a promising alternative in the treatment of breast cancer since it can be highly effective in curing cancer while preserving normal tissue. However, predicting outcomes in PDT still constitutes a great challenge. One of the parameters that are usually empirically determined is the...

journal_title：Photochemistry and photobiology

authors： Dos Santos AF,de Almeida DRQ,Terra LF,Wailemann RAM,Gomes VM,Arini GS,Ravagnani FG,Baptista MS,Labriola L

更新日期：2020-05-01 00:00:00

abstract：:We present the detailed characterization on the reconstitution of two cyclic tetrapyrrole pigments that have the same substituents but differ in the degree of hydrogenation in the macrocycles from bacteriochlorophyll (BChl) a (7,8,17,18-tetrahydroporphyrin) into the binding sites of B800 BChl a in light-harvesting com...

journal_title：Photochemistry and photobiology

authors： Saga Y,Miyagi K

更新日期：2018-07-01 00:00:00

abstract：:A concept has been presented whereby X-ray irradiation can be used to induce visible luminescence of chromophores such as porphyrins. The essential aspects of the idea have been demonstrated in a supramolecular assembly consisting of a water-dispersed polystyrene latex with an embedded scintillating compound, 2,5-diph...

journal_title：Photochemistry and photobiology

authors： Kokotov S,Lewis A,Neumann R,Amrusi S

更新日期：1994-03-01 00:00:00

abstract：:Light signals trigger precise changes in gene expression networks that activate distinctive developmental programs in plants. The transcriptome is shaped at different stages, both by the regulation of gene expression and also by posttranscriptional mechanisms that alter the sequence or abundance of the transcripts gen...

journal_title：Photochemistry and photobiology

authors： Hernando CE,Garcia C,Mateos JL

更新日期：2017-05-01 00:00:00

abstract：:Urinary cytology is a noninvasive and unconstraining technique for urothelial cancer diagnosis but lacks sensitivity for detecting low-grade lesions. In this study, the fluorescence properties of classical Papanicolaou-stained urothelial cytological slides from patients or from cell lines were monitored to investigate...

journal_title：Photochemistry and photobiology

authors： Steenkeste K,Lécart S,Deniset A,Pernot P,Eschwège P,Ferlicot S,Lévêque-Fort S,Briandet R,Fontaine-Aupart MP

更新日期：2007-09-01 00:00:00

abstract：:Extracellular pH was measured continuously and noninvasively in hairless mice using a transcutaneous spectrofluorometric technique and a fluorescent pH probe, bis-carboxyethyl carboxyfluorescein (BCECF). The acid form of BCECF was injected intravenously. An optical fiber system excited the fluorescent probe at 450 and...

journal_title：Photochemistry and photobiology

authors： Russell DA,Pottier RH,Valenzeno DP

更新日期：1994-03-01 00:00:00

abstract：:Herein, we present a comparative study about the photoinactivation of Staphylococcus aureus (Gram-positive model) and Escherichia coli (Gram-negative model) employing a neutral and a dicationic axially functionalized SiIV -phthalocyanine. Depending on the charge of the siloxane moiety (neutral monosaccharide or cation...

journal_title：Photochemistry and photobiology

authors： Grüner MC,Niemann S,Faust A,Strassert CA

更新日期：2018-09-01 00:00:00

abstract：:Vibrio fischeri strain Y1 emits yellow light in vivo due to the participation of a yellow fluorescent protein (YFP) in the luciferase reaction. In this study it was found that the organism also produces a protein (referred to as Y1-BFP) emitting strong blue fluorescence. Its molecular weight, about 25 kDa, is the same...

journal_title：Photochemistry and photobiology

authors： Karatani H,Wilson T,Hastings JW

更新日期：1992-02-01 00:00:00

abstract：:In cultured human keratinocytes, the tumor suppressor p53 acts as a control element in the protective response to UVB radiation and is affected by a variety of factors linked to cellular adhesion and differentiation. Because keratinocytes within the epidermis are not a homogeneous population but differ in their prolif...

journal_title：Photochemistry and photobiology

authors： Will K,Neben M,Schmidt-Rose T,Deppert W,Wittern KP,Bergemann J

更新日期：2000-03-01 00:00:00

abstract：:We have studied the damage of alcohol dehydrogenase (ADH) and glyceraldehyde 3-phosphate dehydrogenase (GAPD) induced by Fe++/EDTA + H2O2 in combination with UV-A (main output at 365 nm). Enzyme inactivation, formation of hydroxyl radicals (measured in the absence of enzymes), increase in protein carbonyls, oxidation ...

journal_title：Photochemistry and photobiology

authors： Hu ML,Tappel AL

更新日期：1992-09-01 00:00:00

abstract：:Central venous catheters (CVC) are widely used in the United States and are associated with 250,000 to 500,000 CVC-related infections in hospitals annually. We used a catheter made from ultraviolet-C (UVC) transmissive material to test whether delivery of UVC from the lumen would allow inactivation of microorganisms o...

journal_title：Photochemistry and photobiology

authors： Dai T,Tegos GP,St Denis TG,Anderson D,Sinofsky E,Hamblin MR

更新日期：2011-01-01 00:00:00

abstract：:The fluoroquinolone (FQ) antibiotics photosensitize human skin to solar UV radiation and are reported to photosensitize tumor formation in mouse skin. As tumor initiation will not occur without genotoxic insult, we examined the potential of ciprofloxacin, lomefloxacin, fleroxacin, BAYy3118 (a recently developed monofl...

journal_title：Photochemistry and photobiology

authors： Reavy HJ,Traynor NJ,Gibbs NK

更新日期：1997-09-01 00:00:00

abstract：:Three Donor-π-Acceptor-π-Donor type styryl dyes (5a-c) with different secondary donors are synthesized and characterized to study their nonlinear and linear optical properties. The structure-property relationships of the dyes are described in the light of systematic photophysical and theoretical investigations. The ph...

journal_title：Photochemistry and photobiology

authors： Raikwar MM,Mathew E,Varghese M,Joe IH,Nethi SN

更新日期：2019-07-01 00:00:00

abstract：:We developed a novel method for the isolation of the PSI-LHCI-LHCII complex from spinach leaves. The supercomplex was resolved into a core complex (CPI), LHCII trimers, LHCI dimers and LHCII monomers using green gel electrophoresis. We then investigate changes in the fluorescence and absorption spectra of PSI-LHCI-LHC...

journal_title：Photochemistry and photobiology

authors： Qin X,Wang W,Wang K,Xin Y,Kuang T

更新日期：2011-01-01 00:00:00

abstract：:Quantum yields of firefly bioluminescence reactions were determined for beetle luciferases from the three main families of luminous beetles emitting different bioluminescence colors. Quantum yield (QY) was significantly correlated with luminescence spectrum. The green light-emitting luciferase of the Brazilian click b...

journal_title：Photochemistry and photobiology

authors： Niwa K,Ichino Y,Kumata S,Nakajima Y,Hiraishi Y,Kato D,Viviani VR,Ohmiya Y

更新日期：2010-09-01 00:00:00

abstract：:There is a need to improve the selectivity of photodynamic therapy and for better targeting of tumor cells within specific tumor compartments. Selective in vitro phototoxicity of a human bladder carcinoma cell line 647V has been achieved by targeting sulfonated aluminum phthalocyanines (AlSPc) with monoclonal antibodi...

journal_title：Photochemistry and photobiology

authors： Morgan J,Lottman H,Abbou CC,Chopin DK

更新日期：1994-11-01 00:00:00

abstract：:The effect of netropsin on the oxidative reactions of duplex DNA was examined. One-electron oxidation of DNA creates a radical cation that migrates through duplex DNA and reacts primarily at GG steps. Netropsin is a dication that specifically binds primarily by hydrogen bonding in the minor groove at sites that have f...

journal_title：Photochemistry and photobiology

authors： Roberts LW,Schuster GB

更新日期：2004-11-01 00:00:00