Relative induction of cyclobutane dimers and cytosine photohydrates in DNA irradiated in vitro and in vivo with ultraviolet-C and ultraviolet-B light.

abstract：:An ongoing study in our laboratories is to examine the relationship of DNA repair defects to human cancer. Our underlying hypothesis has been that human tumors may arise that lack interesting DNA repair pathways if these pathways are important in preventing cancer. In this study, we found that the UV-irradiated adenov...

journal_title：Photochemistry and photobiology

authors： Day RS 3rd,Rasouli-Nia A,Meservy J,Lari SU,Dobler K,Tsunoda S,Miyakoshi J,Takebe H,Murray D

更新日期：1999-08-01 00:00:00

abstract：:Chaetopterus variopedatus has been studied for over a century in terms of its physiology, ecology and life history. One focus of research is on its intrinsic bioluminescent emissions, which can be observed as a blue light emitted from the extremities of individual body segments, or as a secreted mucus. Even though res...

journal_title：Photochemistry and photobiology

authors： Mirza JD,Migotto ÁE,Yampolsky IV,de Moraes GV,Tsarkova AS,Oliveira AG

更新日期：2020-07-01 00:00:00

abstract：:Depletion of the ozone layer leads to increasing UV-B radiation on the earth's surface, which may affect weeds and their responses to herbicides. However, the effect of increased UV-B radiation on weeds and the interaction of weeds and herbicides are still obscure. The objective of this study was to compare glyphosate...

journal_title：Photochemistry and photobiology

authors： Yin L,Zhang M,Li Z,Duan L,Wang S

更新日期：2012-11-01 00:00:00

abstract：:Confocal laser microspectrofluorometric measurements on human T47D mammary tumor cells have been performed to assess the intracellular distribution of hypericin within the various cell compartments: cytoplasmic membrane, cytoplasm and nucleus. Confocal fluorescence measurements obtained from microvolumes (approximatel...

journal_title：Photochemistry and photobiology

authors： Miskovsky P,Sureau F,Chinsky L,Turpin PY

更新日期：1995-09-01 00:00:00

abstract：:The photodegradation of the S(+)- and R(-)-ketoprofen (KP) enantiomers in the bovine serum albumin matrix was studied by steady-state photolysis with the use of lambda(irr) > 320 nm and transient absorption spectroscopy with lambda(exc) = 355 nm, at 1/1 and 2/1 KP/BSA molar ratios. R(-)-KP was found to be more labile ...

journal_title：Photochemistry and photobiology

authors： Monti S,Manet I,Manoli F,Morrone R,Nicolosi G,Sortino S

更新日期：2006-01-01 00:00:00

abstract：:The Photochemical Research Group from San Luis (Argentina) highlights the contributions of Dr. Norman Andino García to the development of the group as a way to show him our gratitude for all his support. ...

journal_title：Photochemistry and photobiology

authors： Ferrari G,Montaña MP

更新日期：2018-11-01 00:00:00

abstract：:The role of water molecules in spectral tuning of proteins has been left largely unexplored. This topic is important because changing hydrogen bond patterns during the activation process may lead to spectral shifts which can be of diagnostic value for the underlying structures. Arguments put forward in this article ar...

journal_title：Photochemistry and photobiology

authors： Sekharan S

更新日期：2009-03-01 00:00:00

abstract：:Detergent solubilized bacteriorhodopsin (BR) proteins which contain alterations made by site-directed mutagenesis (Asp-96----Asn, D96N; Asp-85----Asn, D85N; and Arg-82----Gln, R82Q) have been studied with resonance Raman spectroscopy. Raman spectra of the light-adapted (BRLA) and M species in D96N are identical to tho...

journal_title：Photochemistry and photobiology

authors： Lin SW,Fodor SP,Miercke LJ,Shand RF,Betlach MC,Stroud RM,Mathies RA

更新日期：1991-03-01 00:00:00

abstract：:Blue visible light damage to retinal pigment epithelial cells occurs through a photooxidative mechanism and the resultant damage is hypothesized to induce or exacerbate age-related macular degeneration. The purpose of the present study was to identify changes in the cell growth and the expression of hepatocyte growth ...

journal_title：Photochemistry and photobiology

authors： Chu R,Zheng X,Chen D,Hu DN

更新日期：2006-09-01 00:00:00

abstract：:Photoisomerization of a protein-bound chromophore is the basis of light sensing and signaling in many photoreceptors. Phytochrome photoreceptors can be photoconverted reversibly between the Pr and Pfr states through photoisomerization of the methine bridge between rings C and D. Ground-state heterogeneity of the chrom...

journal_title：Photochemistry and photobiology

authors： Stensitzki T,Yang Y,Wölke AL,Knapp EW,Hughes J,Mroginski MA,Heyne K

更新日期：2017-05-01 00:00:00

abstract：:Photobiomodulation therapy (PBMT) has anti-inflammatory, analgesic and regenerative properties. This systematic review aimed to critically appraise the published data of in vivo human randomized clinical trials (RCTs), and present a comprehensive overview of the efficacy of PBMT, as an adjunct to the nonsurgical perio...

journal_title：Photochemistry and photobiology

authors： Dalvi S,Benedicenti S,Hanna R

更新日期：2020-10-24 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：:The temperature dependence of the uptake phase of 5-aminolevulinic acid (ALA) and the following production phase of protoporphyrin IX (PpIX) in normal mouse skin was investigated. A cream containing 20% ALA was topically applied on the skin for 10 min. The amount of ALA-induced PpIX was evaluated by measuring the fluo...

journal_title：Photochemistry and photobiology

authors： Juzenas P,Sørensen R,Iani V,Moan J

更新日期：1999-04-01 00:00:00

abstract：:This paper analyzes the influence of infrared radiation (IR) on regeneration, after autotomy of limb buds of Neohelice granulata and consequently the time molt. Eyestalks were ablated to synchronize the start of molt. Afterward, animals were autotomized of five pereopods and divided into control and irradiated groups....

journal_title：Photochemistry and photobiology

authors： Gonzalez VC,Lena AB,Espindola WA,de Souza Votto AP,Jorge MB,de Moraes Vaz Batista Filgueira D,Bianchini A,Sérgio Varela Júnior A,Nery LE,Trindade GS

更新日期：2009-09-01 00:00:00

abstract：:Biophysical and photobiological properties of a group of bacteriochlorins were compared with efficacy of these products for photodynamic therapy of murine tumors. Predictive factors for selective photosensitization in vivo include affinity binding to lipoproteins greater than albumin, extinction coefficient at the wav...

journal_title：Photochemistry and photobiology

authors： Kessel D,Smith KM,Pandey RK,Shiau FY,Henderson B

更新日期：1993-08-01 00:00:00

abstract：:Time-resolved singlet oxygen, O(2)(a(1)Delta(g)), phosphorescence experiments have been performed in single cells upon pulsed laser irradiation of a photosensitizer incorporated into the cell. Data recorded as a function of the partial pressure of ambient oxygen to which the cell is exposed reflect apparent values for...

journal_title：Photochemistry and photobiology

authors： Hatz S,Poulsen L,Ogilby PR

更新日期：2008-09-01 00:00:00

abstract：:Tin oxide nanoparticles about 4 nm in size were successfully synthesized using hydrothermal method. The photocatalytic activity of the particles was determined by the decolorization of malachite green (MG) and titanium yellow (TY) under UV light. 12 ppm of MG and TY were used for the solution with an initial volume of...

journal_title：Photochemistry and photobiology

authors： Esen B,Yumak T,Sınağ A,Yıldız T

更新日期：2011-03-01 00:00:00

abstract：:The neonatal immune environment and the events that occur during this time have profound effects for the adult period. While protective immune responses can develop, the neonatal immune system, particularly the skin immune system (SIS), tends to promote tolerance. With this information we undertook a number of studies...

journal_title：Photochemistry and photobiology

authors： Muller HK,Malley RC,McGee HM,Scott DK,Wozniak T,Woods GM

更新日期：2008-01-01 00:00:00

abstract：:Organisms living in coastal waters are exposed to anthropogenic contaminants from terrestrial drainage, ice melting and maritime traffic and to enhanced UVB radiation (UVBR; 280-320 nm) caused by decreased concentrations of ozone in the stratosphere. This article reviews available information about the combined effect...

journal_title：Photochemistry and photobiology

authors： Pelletier E,Sargian P,Payet J,Demers S

更新日期：2006-07-01 00:00:00

abstract：:A novel Cs0.33 WO3 /LDHs (CWLDH) composite was synthesized by simple two steps solvothermal method and first investigated as the photocatalyst for tetracycline (TC) and Congo red (CR) degradation under visible light irradiation. The CWLDH heterostructures catalysts were characterized by XRD, UV-Vis, SEM, XPS and BET. ...

journal_title：Photochemistry and photobiology

authors： Zhang D,Ji T,Yu J,Jiang X,Jiao F

更新日期：2018-03-01 00:00:00

abstract：:The photophysical properties of 1,1'-diethyl-4,4'-carbocyanine chloride (kryptocyanine) have been measured in methanol solution and for the dye bound to human serum albumin, incorporated in neutral micelles and after incubation with leukemia cells. In all cases, it is found that formation of the triplet state of the d...

journal_title：Photochemistry and photobiology

authors： Harriman A,Luengo G,Gulliya KS

更新日期：1990-10-01 00:00:00

abstract：:Photoproducts in double-stranded DNA induced by 193 nm radiation have been investigated. Double-stranded, supercoiled pBR322 DNA in buffered aqueous solution was exposed to varying fluences of 193 nm radiation from an ArF excimer laser. The quantum yields for formation of cyclobutylpyrimidine dimers, frank strand brea...

journal_title：Photochemistry and photobiology

authors： Kochevar IE,Buckley LA

更新日期：1990-05-01 00:00:00

abstract：:The fluorescent pH probe carboxy-seminaphtorhodafluor-1 (C-Snarf-1) has been used for laser microspectro-fluorometric assays of intracellular pH in 3T3 mouse fibroblasts treated with hypocrellin A. These results are compared to those previously obtained with the structurally related hydroxylated polycyclic quinone, hy...

journal_title：Photochemistry and photobiology

authors： Chaloupka R,Sureau F,Kocisova E,Petrich JW

更新日期：1998-07-01 00:00:00

abstract：:We previously reported that Shewanella oneidensis MR-1 is extremely sensitive to natural solar radiation (NSR). Here we analyzed the global transcriptional profile of MR-1 during a 1-h recovering period after exposure to ambient solar light at a dose that yields about 20% survival rate on a Luria-Bertani (LB) plate. W...

journal_title：Photochemistry and photobiology

authors： Qiu X,Tiedje JM,Sundin GW

更新日期：2005-11-01 00:00:00

abstract：:Although strong fluorescence makes the R-phycoerythrin (R-PE) proteins increasingly useful in biological and clinical assays, they are subject to nonlinear effects including transitions to collective dark states and photodegradation, which complicate quantitative applications. We report measurements of R-PE fluorescen...

journal_title：Photochemistry and photobiology

authors： Gaigalas A,Gallagher T,Cole KD,Singh T,Wang L,Zhang YZ

更新日期：2006-05-01 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：: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：:Stratospheric ozone depletion has caused an increase in the amount of ultraviolet-B (UV-B) radiation reaching the earth's surface. Numerous investigations have demonstrated that the effect of UV-B enhancements on plants includes reduction in grain yield, alteration in species competition, susceptibility to disease and...

journal_title：Photochemistry and photobiology

authors： Gao W,Zheng Y,Slusser JR,Heisler GM,Grant RH,Xu J,He D

更新日期：2004-07-01 00:00:00

abstract：:The thermodynamics of binding of Me-alpha(-GalNAc, Gal-beta-1-3GalNAc-alpha-O-Me (T-antigen-alpha), Gal-beta-1-3GalNAc and Gal-alpha-1-6Glc (mellibiose) to Artocarpus hirsuta lectin was studied using fluorescence spectroscopy. The binding affinities of the saccharides are in the order Gal-beta-1-3GalNAc-alpha-O-Me > M...

journal_title：Photochemistry and photobiology

authors： Gaikwad SM,Khan MI

更新日期：2006-09-01 00:00:00

abstract：:The objective of the present study was to investigate the treatment of 9L gliosarcoma brain tumor in the rat with the combination of surgical resection and photodynamic therapy (PDT). Nude rats with intracranial 7-day-old 9L gliomas were randomly subjected to no treatment, PDT alone (Photofrin: 2 mg kg(-1), optical: 8...

journal_title：Photochemistry and photobiology

authors： Zhang X,Jiang F,Kalkanis SN,Yang H,Zhang Z,Katakowski M,Hong X,Zheng X,Chopp M

更新日期：2006-11-01 00:00:00