Photoreceptor cell types in the retina of various vertebrate species: immunocytochemistry with antibodies against rhodopsin and iodopsin.

abstract：:Nucleotide excision repair and the ATR-mediated DNA damage checkpoint are two critical cellular responses to the genotoxic stress induced by ultraviolet (UV) light and are important for cancer prevention. In vivo genetic data indicate that these global responses are coupled. Aziz Sancar et al. developed an in vitro co...

journal_title：Photochemistry and photobiology

authors： Lindsey-Boltz LA

更新日期：2017-01-01 00:00:00

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

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

abstract：:The dependence of autofluorescence properties on the metabolic and functional engagement and on the transformation condition was studied on single cells. Normal Galliera rat fibroblasts at low subculture passage (cell strain), at high subculture passage (stabilized cell line), and transformed cell line derived from a ...

journal_title：Photochemistry and photobiology

authors： Croce AC,Spano A,Locatelli D,Barni S,Sciola L,Bottiroli G

更新日期：1999-03-01 00:00:00

abstract：:Self-aggregation of naturally occurring bacteriochlorophyll (BChl)-e in nonpolar organic solvents was investigated by visible absorption, fluorescence emission and circular dichroism spectra. Cultured brown-colored photosynthetic bacteria have several BChl-e as light-harvesting antenna pigments. Three major BChl-e hom...

journal_title：Photochemistry and photobiology

authors： Saga Y,Matsuura K,Tamiaki H

更新日期：2001-07-01 00:00:00

abstract：:Several antibacterial halogenated salicylanilides, including 3,3',4',5-tetrachlorosalicylanilide (TCSA) and 3,4',5-tribromosalicylanilide (TBSA) are known to cause photoallergy. We have carried out photochemical and spin trapping studies to determine whether free radicals may be involved in the photoallergic response....

journal_title：Photochemistry and photobiology

authors： Chignell CF,Sik RH

更新日期：1989-09-01 00:00:00

abstract：:Photosensitized protein cross-linking has been recently developed to seal wounds and strengthen tissue. Although the photosensitizing dye, Rose Bengal (RB), is phototoxic to cultured cells, cytotoxicity does not accompany RB-photosensitized tissue repair in vivo. We investigated whether the environment surrounding cel...

journal_title：Photochemistry and photobiology

authors： Yao M,Gu C,Doyle FJ Jr,Zhu H,Redmond RW,Kochevar IE

更新日期：2014-03-01 00:00:00

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

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

更新日期：2000-07-01 00:00:00

abstract：:Flash-induced absorbance spectroscopy was used to analyze the proton uptake and electron transfer properties of photosynthetic reaction centers (RC) of Rhodobacter capsulatus that have been genetically modified near the primary quinone electron acceptor (Q(A)). M246Ala and M247Ala, which are symmetry-related to the po...

journal_title：Photochemistry and photobiology

authors： Tandori J,Miksovska J,Valerio-Lepiniec M,Schiffer M,Maróti P,Hanson DK,Sebban P

更新日期：2002-02-01 00:00:00

abstract：:A diffusible multitherapy resistance factor (MTRF) is produced by Cloudman S91 melanoma cells in vitro. The MTRF decreases sensitivity of the target cell line, S91/amel, to gamma-irradiation, UVC (200-280 nm) and mitomycin C (MMC). In the present study, we demonstrate that MTRF also increases the survival of S91/amel ...

journal_title：Photochemistry and photobiology

authors： Hill HZ,Hill GJ,Cieszka K,Azure M,Chowdhary I,Sayre RM

更新日期：1995-05-01 00:00:00

abstract：:Endogenous cellular chromophores absorb ultraviolet A radiation (UVA, 290-320 nm), the major UV component of terrestrial solar radiation, leading to the formation of reactive oxidizing species that initiate apoptosis, gene expression and mutagenesis. UVA-induced apoptosis of T helper cells is believed to underlie the ...

journal_title：Photochemistry and photobiology

authors： Zhuang S,Kochevar IE

更新日期：2003-07-01 00:00:00

abstract：:The quenching of the benzophenone triplet by lysozyme and its constituent amino acids in aqueous solutions have been studied. Native lysozyme quenches the benzophenone triplet with a high rate constant, 4 x 10(9) M-1 s-1. The quenching process takes place with production of significant amounts of free ketyl radicals, ...

journal_title：Photochemistry and photobiology

authors： Encinas MV,Lissi EA,Vasquez M,Olea AF,Silva E

更新日期：1989-05-01 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：:Although allergic rhinitis is not life threatening, it significantly influences the quality of a patient's life. This study is intended to evaluate the safety and efficacy of phototherapy with low-level energy of a 650 nm laser irradiation system in perennial allergic rhinitis patients. This clinical trial was an open...

journal_title：Photochemistry and photobiology

authors： Lee HM,Park MS,Park IH,Lee SH,Lee SK,Kim KS,Choi H

更新日期：2013-05-01 00:00:00

abstract：:Low-level light therapy has been used in health care as a therapeutic strategy for different diseases. However, its effects on cancer are controversial. This work evaluated the effects of three energies on breast cancer-bearing mice after a single red light-emitting diode (LED) irradiation. 4T1 cells were inoculated i...

journal_title：Photochemistry and photobiology

authors： Pereira ST,Silva CR,Nuñez SC,Ribeiro MS

更新日期：2020-10-03 00:00:00

abstract：:The total ozone column (TOC) is the most significant quantity for estimating the erythemally effective UV radiation under clear sky conditions. Uncertainties in TOC measurements and a limited spatial and temporal resolution therefore influence the quality of calculated erythemally effective radiation. The UV Index, th...

journal_title：Photochemistry and photobiology

authors： Schmalwieser AW,Erbertseder T,Schauberger G,Weihs P

更新日期：2008-09-01 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

abstract：:The synthesis of some bromine-substituted rhodamine derivatives viz., 4,5-dibromorhodamine methyl ester (dye 2) and 4,5-dibromorhodamine n-butyl ester (dye 3) are reported. These dyes were synthesized to promote a more efficient cancer cell photosensitizer for potential use in in vitro bone marrow purging in preparati...

journal_title：Photochemistry and photobiology

authors： Pal P,Zeng H,Durocher G,Girard D,Li T,Gupta AK,Giasson R,Blanchard L,Gaboury L,Balassy A,Turmel C,Laperrière A,Villeneuve L

更新日期：1996-02-01 00:00:00

abstract：:Urban environments can have high-risk spaces that can provide excess personal sun exposure, such as urban or street canyons, and the spaces between buildings, among others. In these urban spaces, sun exposure can be high or low depending on several factors. Polysulphone film (PSF) was used to assess possible daily sol...

journal_title：Photochemistry and photobiology

authors： Wright CY,du Preez DJ,Martincigh BS,Allen MW,Millar DA,Wernecke B,Blesic S

更新日期：2020-09-01 00:00:00

abstract：:The growing resistance to antibiotics has rendered antimicrobial photodynamic inactivation (PDI) an attractive alternative treatment modality for infectious diseases. Chitosan (CS) was shown to further potentiate the PDI effect of photosensitizers and was therefore used in this study to investigate its ability to pote...

journal_title：Photochemistry and photobiology

authors： Chen CP,Chen CT,Tsai T

更新日期：2012-05-01 00:00:00

abstract：:Comparative study of 13,15-[N-(2-hydroxyethyl)]cycloimide chlorin p6 (2), 13,15-(N-acetoxy)cycloimide chlorin p6 (3), 13,15-(N-hydroxy)cycloimide chlorin p6 methyl ester (4) and 13,15-(N-methoxy)cycloimide chlorin p6 methyl ester (5) together with the previously investigated 13,15-[N-(3-hydroxypropyl)]cycloimide chlor...

journal_title：Photochemistry and photobiology

authors： Feofanov A,Sharonov G,Grichine A,Karmakova T,Pljutinskaya A,Lebedeva V,Ruziyev R,Yakubovskaya R,Mironov A,Refregier M,Maurizot JC,Vigny P

更新日期：2004-02-01 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：:UV rays may cause several degrees of skin damage, which makes sunscreen research necessary. In addition, skin sensitivity shows daily variations, which can interfere in the detection of the efficacy of the filters. Here, we studied the UV-induced erythema in hairless rats at two times of the day (light and darkness) u...

journal_title：Photochemistry and photobiology

authors： Flo A,Calpena AC,Díez-Noguera A,Del Pozo A,Cambras T

更新日期：2017-03-01 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：:Eumelanin plays a variety of important physiological roles in human skin. However, its structure and fundamental properties still remain poorly understood. Although the absorbance of eumelanin is broad and reveals little about its structure, a variety of techniques have revealed the presence of a disordered array of c...

journal_title：Photochemistry and photobiology

authors： Nighswander-Rempel SP,Mahadevan IB,Rubinsztein-Dunlop H,Meredith P

更新日期：2007-11-01 00:00:00

abstract：:Betanin (betanidin 5-O-β-D-glucoside) is a water-soluble plant pigment used as a color additive in food, drugs and cosmetic products. Despite its sensitivity to light and heat, betanin maintains appreciable tinctorial strength in low acidic and neutral conditions, where the color of other plant pigments, such as antho...

journal_title：Photochemistry and photobiology

authors： Esteves LC,Pinheiro AC,Pioli RM,Penna TC,Baader WJ,Correra TC,Bastos EL

更新日期：2018-09-01 00:00:00

abstract：:Luciferin-regenerating enzyme (LRE) contributes to in vitro recycling of D-luciferin. In this study, reinvestigation of the luciferase-based LRE assay is reported. Here, using quick change site-directed mutagenesis seven T-LRE (Lampyris turkestanicusLRE) mutants were constructed and the most functional mutant of T-LRE...

journal_title：Photochemistry and photobiology

authors： Hemmati R,Hosseinkhani S,Sajedi RH,Azad T,Tashakor A,Bakhtiari N,Ataei F

更新日期：2015-07-01 00:00:00

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：:A novel type of circadian and photoperiodic control of the cell division cycle was found in photoautotrophic Euglena gracilis. When algae entrained to 24 h light-dark (LD) cycles (14 h L) were transferred to continuous darkness (DD) at the eighth hour of the final LD photoperiod, cell-cycle transition was arrested in ...

journal_title：Photochemistry and photobiology

authors： Hagiwara SY,Bolige A,Zhang Y,Takahashi M,Yamagishi A,Goto K

更新日期：2002-07-01 00:00:00

abstract：:Human carcinoma cells (NHIK 3025 cells) and Chinese hamster cells (V79 cells) were incubated with AlPcS1, AlPcS2 and AlPcS4, phthalocyanines with different lipophilicity but with similar photochemical properties when in monomeric solutions. The absorption- and fluorescence spectra of the dyes in the cells were recorde...

journal_title：Photochemistry and photobiology

authors： Moan J,Berg K,Bommer JC,Western A

更新日期：1992-08-01 00:00:00

abstract：:Liposomes were prepared from mixtures of dipalmitoyl-L-alpha-phosphatidylcholine and up to 40% mol:mol of N-stearoyl-L-histidine (NSH) in the presence of the hydrophobic sensitizer DHE. In the dark such liposomes are stable and retain entrapped salts. On photolysis with visible light, liposomes leak trapped ions at NS...

journal_title：Photochemistry and photobiology

authors： Chowdhary RK,Green CA,Morgan CG

更新日期：1993-09-01 00:00:00