Quantum yields and kinetics of the firefly bioluminescence reaction of beetle luciferases.

abstract：:The multifunctional polypeptide cyclosporin synthetase (CySyn) remains one of the most complex nonribosomal peptide synthetase described. In this study we used a highly specific photoaffinity labeling procedure with the natural cofactor S-adenosyl-L-methionine (AdoMet), 14C-isotopically labeled at the Sdelta methyl gr...

journal_title：Photochemistry and photobiology

authors： Velkov T,Lawen A

更新日期：2003-02-01 00:00:00

abstract：:High-altitude Andean lakes (HAAL) are a treasure chest for microbiological research in South America. Their indigenous microbial communities are exposed to extremely high UV irradiation and to multiple chemical extremes (Arsenic, high salt content, alkalinity). Microbes are found both, free-living or associated into m...

journal_title：Photochemistry and photobiology

authors： Albarracín VH,Gärtner W,Farias ME

更新日期：2016-01-01 00:00:00

abstract：:Ultraviolet germicidal irradiation (UVGI) for air disinfection applications has relied on low-pressure mercury vapor lamps for decades. New design requirements have generated the need for alternatives in some uses. This study describes the current state of UVGI technology and describes future directions for technology...

journal_title：Photochemistry and photobiology

authors： Miller SL,Linnes J,Luongo J

更新日期：2013-07-01 00:00:00

abstract：:Fluoresceinyl cypridina luciferin analog (FCLA) is a chemiluminescence (CL) probe for detecting reactive oxygen species (ROS). Its efficiency for detecting singlet oxygen (1O2) can be significantly enhanced in the presence of human serum albumin (HSA). This phenomenon may apply to important applications for both resea...

journal_title：Photochemistry and photobiology

authors： Zhou J,Xing D,Chen Q

更新日期：2006-07-01 00:00:00

abstract：:Chlorprothixene (CPTX, Taractan) is a low potency antipsychotic mainly used for the treatment of psychotic disorders (e.g. schizophrenia) and acute mania occurring as part of bipolar disorders. As in the case of other numerous drugs used in the treatment of psychiatric disorders, CPTX presents geometric isomerism. The...

journal_title：Photochemistry and photobiology

authors： Piñero LE,García C,Lhiaubet-Vallet V,Oyola R,Miranda MA

更新日期：2009-07-01 00:00:00

abstract：:C-Phycocyanin (PC) trimers associated with linker polypeptides were isolated from the phycobilisome (PBS) rods of Synechococcus sp. PCC 7002. LXY refers to a linker polypeptide (L) having an apparent mass of Y kDa, located at position X in the phycobilisome where X can be R (rod), C (core) or RC (rod-core junction). M...

journal_title：Photochemistry and photobiology

authors： Pizarro SA,Sauer K

更新日期：2001-05-01 00:00:00

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：: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

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

更新日期：2001-03-01 00:00:00

abstract：:The effect of pretreatment with vitamin E on cytotoxicity, DNA single strand breaks, and chromosomal aberrations as well as on mutation induced by ultraviolet-B light (UV-B) was investigated in Chinese hamster V-79 cells. Cellular pretreatment with non-toxic levels of 25 microM alpha-tocopherol succinate (vitamin E) f...

journal_title：Photochemistry and photobiology

authors： Sugiyama M,Tsuzuki K,Matsumoto K,Ogura R

更新日期：1992-07-01 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：:Room temperature phosphorescence (RTP) of three palladium (Pd)-phorphyrins in air-saturated solution of sodium deoxycholate (NaDC) aggregates was measured. RTP of Pd-meso-tetrakis (4-carboxyphenyl) porphyrin (Pd-TCPP) was obviously enhanced in NaDC-aggregates mediated by alkaline earth metal (AEM). Under the same expe...

journal_title：Photochemistry and photobiology

authors： Wang YT,Wang XW,Zhang Y

更新日期：2011-07-01 00:00:00

abstract：:Photocatalytic degradation of methyl orange (MO) as a model of an organic pollution was accomplished with magnetic and porous TiO(2)/ZnO/Fe(3)O(4)/PANI and ZnO/Fe(3)O(4)/PANI nanocomposites under visible light irradiation. The structures of nanocomposites were characterized by various techniques including UV-Vis absor...

journal_title：Photochemistry and photobiology

authors： Nabid MR,Sedghi R,Gholami S,Oskooie HA,Heravi MM

更新日期：2013-01-01 00:00:00

abstract：:Synovial sarcoma (SS) is one of common malignant soft-tissue tumors and is encountered most commonly in children and young adults. It frequently involves or invades major neurovascular structures and bones, and its local recurrence rate after simple resection has been reported to be as high as up to 80%. Because major...

journal_title：Photochemistry and photobiology

authors： Kusuzaki K,Murata H,Matsubara T,Miyazaki S,Shintani K,Seto M,Matsumine A,Hosoi H,Sugimoto T,Uchida A

更新日期：2005-05-01 00:00:00

abstract：:Light emitted by electronic photographic flash units is shown to damage bacteria and human skin fibroblasts deficient in repair systems, with survival curves very similar to those produced by 254 nm short UV. The lesions induced by these flashes are as photorepairable by the photolyase enzyme as those induced by 254 n...

journal_title：Photochemistry and photobiology

authors： Menezes S,Monteiro C

更新日期：1996-09-01 00:00:00

abstract：:Solar ultraviolet-B radiation (UVB) is essential for epidermal vitamin D production. We aimed to quantitate the relationship between personal solar UV exposure and serum 25hydroxy vitamin D (25[OH]D) concentration. Blood was collected for 25(OH)D analysis in 207 South Australian adults aged 27-61 years. At the time of...

journal_title：Photochemistry and photobiology

authors： Nair-Shalliker V,Clements M,Fenech M,Armstrong BK

更新日期：2013-01-01 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：:Irradiation with 365 nm light of Wi26VA4 SV40-transformed human fibroblasts cultured for 24 h in the presence of low density lipoproteins loaded with the anticancer porphyrin mixture Photofrin II resulted in a near complete inhibition of [14C]oleic acid incorporation into triacylglycerols, cholesteryl esters and phosp...

journal_title：Photochemistry and photobiology

authors： Biade S,Mazière JC,Mora L,Santus R,Morlière P,Mazière C,Salmon S,Gatt S,Dubertret L

更新日期：1992-01-01 00:00:00

abstract：:The infrared spectrum of monomeric unsubstituted coumarin (C9H6O2; 2H-1-benzopyran-2-one), isolated in solid argon at 10 K is presented and assigned. The UV-induced (lambda>200 nm) unimolecular photochemistry of the matrix-isolated compound was studied experimentally. Three main photoreactions were observed: (a) decar...

journal_title：Photochemistry and photobiology

authors： Kuş N,Breda S,Reva I,Tasal E,Ogretir C,Fausto R

更新日期：2007-09-01 00:00:00

abstract：:The energetic characteristics of selected reaction steps in the bacterial luciferase-catalyzed luminescence reaction were examined by computation using the MNDO-PM3 method. Specifically, a three-step model was proposed to account for the reaction between oxygen and reduced riboflavin 5'-phosphate (1,5H2-FMN) to genera...

journal_title：Photochemistry and photobiology

authors： Wada N,Sugimoto T,Watanabe H,Tu SC

更新日期：1999-07-01 00:00:00

abstract：:Lymphocytes treated with delta-aminolevulinic acid (ALA) can accumulate the photoactive, fluorescent heme precursor, protoporphyrin IX (PpIX). With visible light illumination, PpIX can be used in photodynamic therapy (ALA-PDT) to kill or functionally alter cells. The aim of this study was to characterize the effects o...

journal_title：Photochemistry and photobiology

authors： Hryhorenko EA,Rittenhouse-Diakun K,Harvey NS,Morgan J,Stewart CC,Oseroff AR

更新日期：1998-05-01 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：:Using normal, untransformed, human fibroblasts, the effectiveness of aminolevulinic (ALA)-mediated photodynamic therapy (PDT) was investigated in terms of both clonogenic survival and DNA damage. The response of normal fibroblasts was then compared with Gorlin syndrome-derived fibroblasts (basal cell nevus syndrome [B...

journal_title：Photochemistry and photobiology

authors： Haylett AK,Ward TH,Moore JV

更新日期：2003-10-01 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：:All-trans retinoic acid (ATRA) plays essential roles in the normal biological processes and the treatment of cancer and skin diseases. Considering its photosensitive property, many studies have been focused on the photochemistry of ATRA. In this study, we investigated the transient phenomena in the laser flash photoly...

journal_title：Photochemistry and photobiology

authors： Li K,Wang M,Wang T,Sun D,Zhu R,Sun X,Wu X,Wang SL

更新日期：2013-09-01 00:00:00

abstract：:Vacuum UV (VUV) process is an incipient advanced oxidation process, which can be used for water treatment. This process relies on the formation of hydroxyl radicals through the VUV-induced photolysis of water. In particular, the use of ozone-generating mercury vapor lamps, which emit 10% of the radiation at 185 nm and...

journal_title：Photochemistry and photobiology

authors： Duca C,Imoberdorf G,Mohseni M

更新日期：2014-01-01 00:00:00

abstract：:Generating accurate population-specific public health messages regarding sun protection requires knowledge about seasonal variation in sun exposure in different environments. To address this issue for a subtropical area of Australia, we used polysulphone badges to measure UVR for the township of Nambour (26 degrees la...

journal_title：Photochemistry and photobiology

authors： Neale RE,Hamilton AR,Janda M,Gies P,Green AC

更新日期：2010-03-01 00:00:00

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：:2-Aminoacetophenone (AAP) was recognized as the key compound for the so-called untypical aging off-flavor (UTA) in Vitis vinifera wines. In this study, it was shown that AAP can be formed by photooxidation of free and protein-bound tryptophan (TRP) in combination with a subsequent storage in model wine. Solutions of T...

journal_title：Photochemistry and photobiology

authors： Horlacher N,Schwack W

更新日期：2014-11-01 00:00:00

abstract：:We analyzed the photoinactivation of the membrane functions of bacteria and erythrocytes induced by xanthene dyes. The dyes tested were rose bengal, phloxine B, erythrosine B and eosin B. These dyes induced the leakage of K(+) from Staphylococcus aureus cells within minutes of photoirradiation, in the order of rose be...

journal_title：Photochemistry and photobiology

authors： Kato H,Komagoe K,Nakanishi Y,Inoue T,Katsu T

更新日期：2012-03-01 00:00:00

abstract：:Psoralen is a furocoumarin natural product that intercalates within DNA and forms covalent adducts when activated by ultraviolet radiation. It is well known that this property contributes to psoralen's clinical efficacy in several disease contexts, which include vitiligo, psoriasis, graft-versus-host disease and cutan...

journal_title：Photochemistry and photobiology

authors： Buhimschi AD,Gooden DM,Jing H,Fels DR,Hansen KS,Beyer WF Jr,Dewhirst MW,Walder H,Gasparro FP

更新日期：2020-09-01 00:00:00