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

abstract：:Time-resolved reflectance and transmittance spectroscopy was applied to measure in vivo the absorption and transport scattering spectra of the female breast from 610 to 1010 nm. Three measurement configurations were used to probe different breast regions, and data were collected two or three times in each of the five ...

journal_title：Photochemistry and photobiology

authors： Cubeddu R,D'Andrea C,Pifferi A,Taroni P,Torricelli A,Valentini G

更新日期：2000-09-01 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：:The significance of human cutaneous pigmentation lies in its protective role against sun-induced DNA damage and photocarcinogenesis. Fair skin and red hair are characterized by a low eumelanin to pheomelanin ratio, and have been associated with increased risk of skin cancer. Cutaneous pigmentation is a complex genetic...

journal_title：Photochemistry and photobiology

authors： Dessinioti C,Antoniou C,Katsambas A,Stratigos AJ

更新日期：2011-09-01 00:00:00

abstract：:A novel antibody-fluorescence method has been developed to elucidate the chromophore topography in phytochrome as it undergoes a photochromic transformation. Förster energy transfer from N-terminal bound, fluorescently labeled Oat-25 Fab antibody fragments to the phytochrome chromophore was measured. The results sugge...

journal_title：Photochemistry and photobiology

authors： Farrens DL,Cordonnier MM,Pratt LH,Song PS

更新日期：1992-11-01 00:00:00

abstract：:Many biomolecules contain photoactive reducing agents, such as reduced nicotinamide adenine dinucleotide (NADH) and 6-thioguanine (6-TG) incorporated into DNA through drug metabolism. These reducing agents may produce reactive oxygen species under UVA irradiation or act as electron donors in various media. The interac...

journal_title：Photochemistry and photobiology

authors： Quinones M,Zhang Y,Riascos P,Hwang HM,Aker WG,He X,Gao R

更新日期：2014-03-01 00:00:00

abstract：:Photodynamic therapy (PDT) oxygen consumption, clonogenic cell survival, fluorescence photobleaching and photoproduct formation were investigated during benzoporphyrin derivative monoacid (BPD-MA)-PDT of MAT-LyLu cells in vitro. Cells were incubated with BPD-MA concentrations of 0.1, 0.5 or 2.5 μg mL(-1) for 2 h and t...

journal_title：Photochemistry and photobiology

authors： Weston MA,Patterson MS

更新日期：2011-09-01 00:00:00

abstract：:Differences between global radiation UVER (erythemal ultraviolet solar radiation) received under full sun and diffuse radiation received under the shadow of two types of tree are analyzed to check the importance of these components on human exposure to UV radiation. Blue Line spores dosimeters of VioSpor were used for...

journal_title：Photochemistry and photobiology

authors： Ysasi GG,Ribera LJ

更新日期：2013-05-01 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：:The potential for electron transfer quenching of rose bengal triplet (3RB2-) to compete with energy transfer quenching by oxygen was evaluated. Rate constants for oxidative and reductive quenching were measured in buffered aqueous solution, acetonitrile and in small unilamellar liposomes using laser flash photolysis. ...

journal_title：Photochemistry and photobiology

authors： Lambert CR,Kochevar IE

更新日期：1997-07-01 00:00:00

abstract：:Photodynamic therapy (PDT) is an increasingly popular anticancer treatment that uses photosensitizer, light and tissue oxygen to generate cytotoxic reactive oxygen species (ROS) within illuminated cells. Acting to counteract ROS-mediated damage are various cellular antioxidant pathways. In this study, we combined PDT ...

journal_title：Photochemistry and photobiology

authors： Kimani SG,Phillips JB,Bruce JI,MacRobert AJ,Golding JP

更新日期：2012-01-01 00:00:00

abstract：:Studies have reported the association of human leukocyte antigen (HLA) genes with susceptibility to develop actinic prurigo (AP) in Caucasians, but there were no studies in Asian populations, including the Chinese. Our study was performed to determine if AP is associated with susceptibility or protective HLA alleles o...

journal_title：Photochemistry and photobiology

authors： Chen Q,Shen M,Heng YK,Theng TSC,Tey HL,Ren EC,Chong WS

更新日期：2016-03-01 00:00:00

abstract：:Conventional brain-imaging modalities may be limited by high cost, difficulty of bedside use, noncontinuous operation, invasiveness or an inability to obtain measurements of tissue function, such as oxygenation during stroke. Our goal was to develop a bedside clinical device able to generate continuous, noninvasive, t...

journal_title：Photochemistry and photobiology

authors： Hintz SR,Benaron DA,van Houten JP,Duckworth JL,Liu FW,Spilman SD,Stevenson DK,Cheong WF

更新日期：1998-09-01 00:00:00

abstract：:A visual chromophore analogue, 10-methyl-13-demethyl (dm) retinal, was synthesized and reconstituted with bleached bovine rhodopsin to form a visual pigment derivative with absorbance maximum at 505 nm. The investigations with this new compound were stimulated from recent results using 13-dm retinal as a chromophore t...

journal_title：Photochemistry and photobiology

authors： Koch D,Gärtner W

更新日期：1997-01-01 00:00:00

abstract：:Sapphyrins and a series of related porphyrinoid macrocycles have been investigated as potential agents for the treatment of leishmaniasis. The effectiveness of the compounds was evaluated in vitro upon incubation with Leishmania tarentolae or L. panamensis amastigotes and promastigotes. Their effectiveness was also as...

journal_title：Photochemistry and photobiology

authors： Hooker JD,Nguyen VH,Taylor VM,Cedeño DL,Lash TD,Jones MA,Robledo SM,Vélez ID

更新日期：2012-01-01 00:00:00

abstract：:Near-ultraviolet light (UVA: 320-400 nm) constitutes a major part of sunlight UV. It is important to know the effect of UVA on the biological activities of organisms on the earth. We have previously reported that black light induces somatic-cell mutation in Drosophila larvae. To investigate which wavelength of the UVA...

journal_title：Photochemistry and photobiology

authors： Negishi T,Nagaoka C,Hayatsu H,Suzuki K,Hara T,Kubota M,Watanabe M,Hieda K

更新日期：2001-05-01 00:00:00

abstract：:Color variants of Ca2+ -regulated photoprotein obelin were shown to be an important tool for dual-analyte binding assay. To provide site-directed conjugation with biospecific molecules, several obelin color mutants carrying unique cysteine residues were obtained and characterized for their novel properties. A pair of ...

journal_title：Photochemistry and photobiology

authors： Krasitskaya VV,Burakova LP,Komarova AA,Bashmakova EE,Frank LA

更新日期：2017-03-01 00:00:00

abstract：:Paracoccidioidomycosis is the most prevalent human mycosis in Latin America. Cutaneous lesions are extremely painful and sensitive, and current treatment with antifungal drugs is lengthy and may cause side effects to patients. In this perspective, the helium-neon (HeNe) laser emerges as a novel therapy form due to its...

journal_title：Photochemistry and photobiology

authors： Nagib PR,Gameiro J,da Costa TA,Di Gangi R,Ribeiro Jda S,Paulino LC,Verinaud L

更新日期：2010-07-01 00:00:00

abstract：:Tetraarylporphyrins substituted with nitro groups at beta-pyrrolic positions are potential candidates for electron-accepting pigments in model systems for photosynthesis. The photophysics of 2-nitro-5,10,15,20-tetra-p-tolylporphyrin and its zinc analog have been studied in order to evaluate this potential. The ground ...

journal_title：Photochemistry and photobiology

authors： Gust D,Moore TA,Luttrull DK,Seely GR,Bittersmann E,Bensasson RV,Rougée M,Land EJ,De Schryver FC,Van der Auweraer M

更新日期：1990-04-01 00:00:00

abstract：:More scheduled outdoor stay is increasingly advocated for school children. This study measured 2(nd) , 5(th) and 8(th) graders' erythemal UV-exposure in September, March and May at four Swedish schools. We related those exposures, as fractions of total available ambient radiation, to the schools outdoor environments d...

journal_title：Photochemistry and photobiology

authors： Pagels P,Wester U,Söderström M,Lindelöf B,Boldemann C

更新日期：2016-01-01 00:00:00

abstract：:In clinical 5-aminolevulinic acid (ALA)-based photodynamic therapy (PDT) of skin tumors it is desirable to develop vehicles that minimize the penetration of ALA through normal stratum corneum and maximize it through the compromised stratum corneum of the tumors to improve tumor selectivity. We have designed a bioadhes...

journal_title：Photochemistry and photobiology

authors： Donnelly RF,Ma LW,Juzenas P,Iani V,McCarron PA,Woolfson AD,Moan J

更新日期：2006-05-01 00:00:00

abstract：:Pharaonis phoborhodopsin (ppR or sensory rhodopsin II) is a negative phototaxis receptor of Natronomonas pharaonis, and forms a complex, which transmits the photosignal into cytoplasm, with its cognate transducer (pHtrII). We examined a possible local dynamics change of ppR and its D75N mutant complexed with pHtrII, u...

journal_title：Photochemistry and photobiology

authors： Kawamura I,Yoshida H,Ikeda Y,Yamaguchi S,Tuzi S,Saitô H,Kamo N,Naito A

更新日期：2008-07-01 00:00:00

abstract：:Photoactive materials based on dye molecules incorporated into thin films or bulk solids are useful for applications as photosensitization, photocatalysis, solar cell sensitization and fluorescent labeling, among others. In most cases, high concentrations of dyes are desirable to maximize light absorption. Under these...

journal_title：Photochemistry and photobiology

authors： Rodríguez HB,San Román E

更新日期：2013-11-01 00:00:00

abstract：:The ultraviolet (UV) component of solar radiation is the driving force of life on earth, but it can cause photoaging and skin cancer. In this study, we investigated the effects of the glucosamine-derivative 2-(N-Acetyl)-L-phenylalanylamido-2-deoxy-β-D-glucose (NAPA) on human primary fibroblasts (FBs) stimulated in vit...

journal_title：Photochemistry and photobiology

authors： Lopreiato M,Cocchiola R,Falcucci S,Leopizzi M,Cardone M,Di Maio V,Brocco U,D'Orazi V,Calvieri S,Scandurra R,De Marco F,Scotto d'Abusco A

更新日期：2020-01-01 00:00:00

abstract：:Among beetle luciferases, the pH-sensitive firefly luciferases have been studied extensively. Much less is known about pH-insensitive luciferases, which include click beetle and railroad worm luciferases. Previously, we found that the residues R215 and T226 (N230) are important for green light emission. Here we show t...

journal_title：Photochemistry and photobiology

authors： Viviani VR,Uchida A,Viviani W,Ohmiya Y

更新日期：2002-11-01 00:00:00

abstract：:A portable fluorimeter was developed and utilized to acquire fluorescence spectra from 381 cervical sites in 95 patients at 337, 380 and 460 nm excitation immediately prior to colposcopy. A multivariate statistical algorithm was used to extract clinically useful information from tissue spectra acquired in vivo. Two fu...

journal_title：Photochemistry and photobiology

authors： Ramanujam N,Mitchell MF,Mahadevan-Jansen A,Thomsen SL,Staerkel G,Malpica A,Wright T,Atkinson N,Richards-Kortum R

更新日期：1996-10-01 00:00:00

abstract：:Photosensitizers (PS) are compounds that can generate reactive oxygen species under irradiation of appropriate light and are widely used in photodynamic therapy (PDT). Currently, topical PDT is an effective treatment for several skin diseases, including bacterial infections, fungal mycoses and psoriasis. In addition, ...

journal_title：Photochemistry and photobiology

authors： de França BM,Ghasemishahrestani Z,de Souza GFM,da Silva RN,Queiroz DD,Pierre MBR,Pereira MD,Forero JSB,Corrêa RJ

更新日期：2020-09-23 00:00:00

abstract：:Leaf discs, enclosed in a photoacoustic (PA) chamber, generate two types of PA gas-uptake signals under certain conditions. Type I is manifested by a severe signal decrease that develops slowly under very low-light intensity and often reaches negative values. It is partially reversed by low-intensity far-red light. Ty...

journal_title：Photochemistry and photobiology

authors： Malkin S,Havaux M

更新日期：2001-10-01 00:00:00

abstract：:We report the spectroscopic properties of fluorescein, x-rhodamine, tetramethyl-rhodamine, attached to single strand, duplex DNA, and to the digestion products by DNAse I. The properties reported include: molar absorptivity, quantum yield, absorbance and fluorescence spectra, fluorescence lifetime, intrinsic lifetime ...

journal_title：Photochemistry and photobiology

authors： Delgadillo RF,Parkhurst LJ

更新日期：2010-03-01 00:00:00

abstract：:We have used the complex of antigen with class II major histocompatibility proteins (Ia) in membrane-bound form to target a phototoxic compound to antigen-specific T cell hybridomas in vitro. The iodoacetamidyl ester of phototoxic pyrene was bound covalently to antigen-presenting cells (APC), and protein antigens were...

journal_title：Photochemistry and photobiology

authors： Chang NH,Rayner DC,Boggs JM

更新日期：1995-05-01 00:00:00

abstract：:Cypridina luciferase (Cluc), a secreted luminescent protein identified from Cypridina noctiluca, has two N-glycosylation sites. In this study, we evaluated the effects of N-glycosylation on Cluc properties by creating site-directed mutagenic modifications at the consensus sequence for N-glycosylation (Asn-X-Ser/Thr). ...

journal_title：Photochemistry and photobiology

authors： Yasuno R,Mitani Y,Ohmiya Y

更新日期：2018-03-01 00:00:00