Formation of protein-bound 3,4-dihydroxyphenylalanine in collagen types I and IV exposed to ultraviolet light.

abstract：:In this study, we investigated whether the spectrum of p53 mutations in skin tumors induced in hairless SKH-hr1 mice by a solar simulator (290-400 nm) are similar to those found in skin tumors induced in C3H mice by UV radiation from unfiltered (250-400 nm) and Kodacel-filtered (290-400 nm) FS40 sunlamps. Analysis of ...

journal_title：Photochemistry and photobiology

authors： Ananthaswamy HN,Fourtanier A,Evans RL,Tison S,Medaisko C,Ullrich SE,Kripke ML

更新日期：1998-02-01 00:00:00

abstract：:Photodamage to the endoplasmic reticulum (ER) can initiate a death pathway termed paraptosis. The "canonical" model of paraptosis, initiated by certain drugs and other stimuli, requires a brief interval of protein synthesis, involves the action of MAP kinases and can be followed by biochemical markers. The latter incl...

journal_title：Photochemistry and photobiology

authors： Kessel D

更新日期：2020-09-01 00:00:00

abstract：:Although ultraviolet-B (UV-B) radiation is potentially harmful, it is an important component of terrestrial radiation to which plants have been exposed since invading land. Since then, plants have evolved mechanisms to avoid and repair UV radiation damage; therefore, it is not surprising that photomorphogenic response...

journal_title：Photochemistry and photobiology

authors： Gitz DC,Liu-Gitz L

更新日期：2003-12-01 00:00:00

abstract：:Limited trypsinization of large pea (Pisum sativum cv. Alaska) phytochrome and subsequent size-exclusion chromatography (SEC) in 0.1 M Na phosphate, pH 7.8, yielded a high-molecular-mass aggregate of tryptic fragments of phytochrome. Further SEC in 0.1 M Tris-HCl, pH 7.5, plus various concentrations of NaSCN, indicate...

journal_title：Photochemistry and photobiology

authors： Yamamoto KT,Tokutomi S

更新日期：1989-07-01 00:00:00

abstract：:The broad-band normal incidence UVB beam radiation has been measured at Neve Zohar, Dead Sea basin, using a prototype tracking instrument composed of a Model 501A UV-Biometer mounted on an Eppley Solar Tracker Model St-1. The diffuse and beam fraction of the solar global UVB radiation have been determined using the co...

journal_title：Photochemistry and photobiology

authors： Kudish AI,Harari M,Evseev EG

更新日期：2011-01-01 00:00:00

abstract：:The interaction with amino acids of the excited states of the N-oxide resazurin and its deoxygenation product resorufin, has been studied in aqueous solution at pH 7.5. Steady-state and time-resolved studies show that the fluorescence is quenched by amino acids. Complexation of the dyes in the ground state with aromat...

journal_title：Photochemistry and photobiology

authors： Villegas ML,Bertolotti SG,Previtali CM,Encinas MV

更新日期：2005-07-01 00:00:00

abstract：:Assignment of the fluorescence spectrum of firefly luciferin in aqueous solutions was achieved by utilizing not only emission energies but also theoretical absorption spectra and relative concentrations as estimated by pKa values. Calculated Gibbs free energies were utilized to estimate pKa values. These pKa values we...

journal_title：Photochemistry and photobiology

authors： Hiyama M,Akiyama H,Yamada K,Koga N

更新日期：2014-01-01 00:00:00

abstract：:The in vitro cell survival, localization and ultrastructural changes following irradiation were examined in 9L glioma cells sensitized with a new photosensitizer, lysyl chlorin p6 (LCP). In clonogenic assays, LCP was 10-100-fold more phototoxic than photofrin II on a microgram/mL basis. Lysyl chlorin p6 uptake was blo...

journal_title：Photochemistry and photobiology

authors： Leach MW,Higgins RJ,Autry SA,Boggan JE,Lee SJ,Smith KM

更新日期：1993-11-01 00:00:00

abstract：:The recently discovered photo-activated adenylyl cyclase (mPAC from Microcoleus chthonoplastes) is the first PAC that owes a light-, oxygen- and voltage-sensitive (LOV) domain for blue-light sensing. The photoreaction of the mPAC receptor was studied by time-resolved UV/vis and light-induced Fourier transform infrared...

journal_title：Photochemistry and photobiology

authors： Kerruth S,Langner P,Raffelberg S,Gärtner W,Heberle J

更新日期：2017-05-01 00:00:00

abstract：:Accurate determination of the diurnal variability and daily insolation of surface (0(+) ) and subsurface (0(-) ) irradiance are essential to estimate several physical, chemical and biological processes occurring at the surface layer of marine environments. Natural downwelling PAR and spectral UVR were examined on eigh...

journal_title：Photochemistry and photobiology

authors： Kuwahara VS,Taguchi S

更新日期：2015-09-01 00:00:00

abstract：:Chronic exposure of the gray, short-tailed oppossum, Monodelphis domestica to ultraviolet radiation (UVR) induces mesenchymal tumors of the cornea. High molecular weight DNA samples from 6 UVR-induced corneal tumors were assayed for their ability to transform NIH 3T3 cells to tumorigenicity. NIH 3T3 cells transfected ...

journal_title：Photochemistry and photobiology

authors： Sabourin CL,Freeman AG,Kusewitt DF,Ley RD

更新日期：1992-03-01 00:00:00

abstract：:Systemic injection of hematoporphyrin derivative (HpD) in contribution with visible light (red or blue-green) delivered by laser was used to treat a patient with psoriasis. The psoriatic lesions responded vigorously to laser treatments, forming eschars by 1 week post irradiation. In contrast, only minimal erythema was...

journal_title：Photochemistry and photobiology

authors： McCullough JL,Weinstein GD,Douglas JL,Berns MW

更新日期：1987-07-01 00:00:00

abstract：:The progressive loss of visual faculties with advancing age is attributed, sometimes, mainly to allegedly inevitable optical deterioration, such as clouding of the media, or again to neurosenescence, as typified by cell-death. The relevant factors are assessed, and it is not thought likely that changes in normal ocula...

journal_title：Photochemistry and photobiology

authors： Weale RA

更新日期：1989-09-01 00:00:00

abstract：:G protein-coupled receptors (GPCRs) are involved in the control of virtually all aspects of our behavior and physiology. Activated receptors catalyze nucleotide exchange in heterotrimeric G proteins (composed of alpha.GDP, beta and gamma subunits) on the inner surface of the cell membrane. The GPCR rhodopsin and the G...

journal_title：Photochemistry and photobiology

authors： Chen Y,Herrmann R,Fishkin N,Henklein P,Nakanishi K,Ernst OP

更新日期：2008-07-01 00:00:00

abstract：:Current conditions of 2-11 kJ m(-2) day(-1) of UV-B radiation and temperatures of >30 degrees C during flowering in cotton cultivated regions are projected to increase in the future. A controlled environment study was conducted in sunlit growth chambers to determine the effects of UV-B radiation and temperature on phy...

journal_title：Photochemistry and photobiology

authors： Reddy KR,Kakani VG,Zhao D,Koti S,Gao W

更新日期：2004-05-01 00:00:00

abstract：:Haloarcula marismortui has been described to be nonmotile prior to the recent identification of flagellar filaments, suggesting the motile nature of H. marismortui. Here we observed the locomotion of freshly cultured H. marismortui cells and tracked the swimming trajectories via ImageJ. Trajectories of H. marismortui ...

journal_title：Photochemistry and photobiology

authors： Lin YC,Fu HY,Yang CS

更新日期：2010-09-01 00:00:00

abstract：:Previous studies have reported that 450 nm blue light emitting diode (BLED) induces apoptosis through a mitochondria-mediated pathway in cancer cells and reduces the early stage tumor growth. This study was performed to determine the effects of BLED-irradiated cell metabolites on cell injury. Our results showed that c...

journal_title：Photochemistry and photobiology

authors： Oh PS,Kim EM,Kim M,Kim IS,Han YH,Lim S,Sohn MH,Ko MH,Jeong HJ

更新日期：2018-05-01 00:00:00

abstract：:Three substituted tetraazaporphyrins, octa-(4-tert-butylphenyl)-tetrapyrazinoporphyrazine, tetra-(4-tert-butyl)phthalocyanine and tetra-(4-tert-butyl)phthalocyanatomagnesium(t4-PcMg), were spectroscopically checked in solutions and liposomes with respect to suitability as potential sensitizers of a possible new start ...

journal_title：Photochemistry and photobiology

authors： Teuchner K,Pfarrherr A,Stiel H,Freyer W,Leupold D

更新日期：1993-03-01 00:00:00

abstract：:The bimolecular rate constants (k) of quenching of molecular singlet oxygen 1O2 (1 delta g) by organo-selenium compounds exhibiting glutathione peroxidase activity and by sulfur analogs have been determined by time resolved phosphorescence detection of 1O2 in CD3OD and C6D6, with no solvent effect. The rate constants ...

journal_title：Photochemistry and photobiology

authors： Scurlock R,Rougée M,Bensasson RV,Evers M,Dereu N

更新日期：1991-11-01 00:00:00

abstract：:There are controversial reports in the literature concerning the reactivity of singlet oxygen ((1)O(2)) with the redox probe 2',7'-dichlorodihydrofluorescein (DCFH). By carefully preparing solutions in which (1)O(2) is quantitatively generated in the presence of DCFH, we were able to show that the formation rate of th...

journal_title：Photochemistry and photobiology

authors： Daghastanli NA,Itri R,Baptista MS

更新日期：2008-09-01 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：:Solid-state NMR spectroscopy gives a powerful avenue for investigating G protein-coupled receptors and other integral membrane proteins in a native-like environment. This article reviews the use of solid-state (2)H NMR to study the retinal cofactor of rhodopsin in the dark state as well as the meta I and meta II photo...

journal_title：Photochemistry and photobiology

authors： Brown MF,Martínez-Mayorga K,Nakanishi K,Salgado GF,Struts AV

更新日期：2009-03-01 00:00:00

abstract：:Iranian firefly larvae, Lampyris turkestanicus collected from north of Iran and their luciferin were analyzed by HPLC, TLC, MS and spectroscopic Fourier transform ([FT]-IR, FT-NMR, UV and fluorescence) methods. The results showed that luciferin in L turkestanicus lanterns was the same as in the American firefly, Photi...

journal_title：Photochemistry and photobiology

authors： Hadj-Mohammadi MR,Chaichi MJ

更新日期：1996-11-01 00:00:00

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. Ch...

journal_title：Photochemistry and photobiology

authors： Rakshit S,Goswami N,Pal SK

更新日期：2012-01-01 00:00:00

abstract：:When Escherichia coli cells were irradiated by UVA in the presence of 6-mercaptopurine (6-MP) or 2-thiouracil (S2Ura), two kinds of repair-deficient strains of recA- and uvrA- were killed more efficiently than the parental wild-type strain having normal repair capacities. In addition, these agents with UVA exposure gr...

journal_title：Photochemistry and photobiology

authors： Komeda K,Iwamoto S,Kominami S,Ohnishi T

更新日期：1997-01-01 00:00:00

abstract：:The aim of this investigation is the evaluation of DNA interaction of with tetraruthenated porphyrin (TRP) and of DNA damage in the presence of light. Direct-fluorescence and electronic absorption measurements after incubation of DNA with TRP indicate strong binding between pBR322 DNA or calf thymus DNA with the modif...

journal_title：Photochemistry and photobiology

authors： Onuki J,Ribas AV,Medeiros MH,Araki K,Toma HE,Catalani LH,Di Mascio P

更新日期：1996-03-01 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：:Pharmacological therapy is widely used in the treatment of muscle injuries. On the other hand, low-level laser therapy (LLLT) arises as a promising nonpharmacological treatment. The aim of this study was to analyze the effects of sodium diclofenac (topical application) and LLLT on morphological aspects and gene expres...

journal_title：Photochemistry and photobiology

authors： de Almeida P,Lopes-Martins RÁ,Tomazoni SS,Albuquerque-Pontes GM,Santos LA,Vanin AA,Frigo L,Vieira RP,Albertini R,de Carvalho Pde T,Leal-Junior EC

更新日期：2013-03-01 00:00:00

abstract：:In current clinical practice, photodynamic therapy (PDT) is carried out with prescribed drug doses and light doses as well as fixed drug-light intervals and illumination fluence rates. This approach can result in undesirable treatment outcomes of either overtreatment or undertreatment because of biological variations ...

journal_title：Photochemistry and photobiology

authors： Zeng H,Korbelik M,McLean DI,MacAulay C,Lui H

更新日期：2002-04-01 00:00:00

abstract：:We have compared the distributions of two stable UV photoproducts in nucleosome core DNA at the single-nucleotide level using a T4 polymerase-exonuclease mapping procedure. The distribution of pyrimidine-pyrimidone (6-4) dimers was uncovered by reversing the major UV photo-product, cis-syn cyclobutane pyrimidine dimer...

journal_title：Photochemistry and photobiology

authors： Gale JM,Smerdon MJ

更新日期：1990-04-01 00:00:00