Laser thermal ablation.

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：:Skh:HR-1 hairless mice were irradiated chronically with sub-erythemal doses of UVB radiation, and a number of biochemical parameters in the skin were determined after 6, 12, 18, and 24 wk of exposure. The parameters measured were water, collagen, elastin, and glycosaminoglycan content; collagenase and elastase levels;...

journal_title：Photochemistry and photobiology

authors： Chatterjee R,Benzinger MJ,Ritter JL,Bissett DL

更新日期：1990-01-01 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：:Molecular beacons (MB) are becoming more common as sequence-selective detectors of nucleic acids. Although they can easily detect single-base mismatches, they have never been used to directly detect DNA or RNA damage. To measure the degree of ultraviolet (UV) light damage in oligonucleotides, we report a novel MB appr...

journal_title：Photochemistry and photobiology

authors： Yarasi S,McConachie C,Loppnow GR

更新日期：2005-03-01 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：:We investigated the effect of the cation-π interaction on the susceptibility of a tryptophan model system toward interaction with singlet oxygen, that is, type II photooxidation. The model system consists of two indole units linked to a lariat crown ether to measure the total rate of removal of singlet oxygen by the i...

journal_title：Photochemistry and photobiology

authors： Arevalo GE,Cagan DA,Monsour CG,Garcia AC,McCurdy A,Selke M

更新日期：2020-11-01 00:00:00

abstract：:In this paper, we propose a new physical method in combination with mixed solution of thiazone and polyethylene glycol 400 (thiazone PEG 400 solution) penetration into tissue to assess the skin optical clearing. Four treatments were performed: (1) control group (C); (2) polyethylene glycol 400 (PEG400); (3) 0.25% thia...

journal_title：Photochemistry and photobiology

authors： Zhong H,Guo Z,Wei H,Guo L,Wang C,He Y,Xiong H,Liu S

更新日期：2010-05-01 00:00:00

abstract：:We report that exo- and endogenous guanosine 3',5'-cyclic monophosphate (cGMP) specifically influenced the photophobic response. In behavioral experiments the slowly hydrolyzable and membrane-permeable analogs of cGMP (8-bromo-cGMP [Br-cGMP] and N6,2'-o-dibutyryl-cGMP) dramatically prolonged the time for ciliary stop ...

journal_title：Photochemistry and photobiology

authors： Walerczyk M,Fabczak S

更新日期：2001-12-01 00:00:00

abstract：:Structure-activity relationships have been widely reported for porphyrin and phthalocyanine photosensitizers, but not for phenothiazinium derivatives. Here, four phenothiazinium salts (methylene blue, toluidine blue O, 1,9-dimethyl methylene blue and the pentacyclic derivative DO15) were used to investigate how the ab...

journal_title：Photochemistry and photobiology

authors： Bacellar IO,Pavani C,Sales EM,Itri R,Wainwright M,Baptista MS

更新日期：2014-07-01 00:00:00

abstract：:We have tested the hypothesis that exposure to ultraviolet light would inhibit T helper-1 (Th1) responses and stimulate T helper-2 (Th2) responses, and that thus in a mouse model of allergic (i.e. extrinsic) asthma (using ovalbumin [OVA] as the allergen) increased symptoms would be observed, while in a model of Th1-de...

journal_title：Photochemistry and photobiology

authors： Van Loveren H,Boonstra A,Van Dijk M,Fluitman A,Savelkoul HF,Garssen J

更新日期：2000-08-01 00:00:00

abstract：:Phage T7 can be used as a biological UV dosimeter. Its reading is proportional to the inactivation rate expressed in HT7 units. To understand the influence of phage proteins on the formation of DNA UV photoproducts, cyclobutane pyrimidine dimers (CPD) and (6-4)photoproducts ((6-4)PD) were determined in T7 DNA exposed ...

journal_title：Photochemistry and photobiology

authors： Fekete A,Vink AA,Gaspar S,Modos K,Berces A,Ronto G,Roza L

更新日期：1999-05-01 00:00:00

abstract：:Alignment of the primary structures of the hydrozoan photoproteins, aequorin, mitrocomin, clytin and obelin showed very strong amino acid sequence identities. The Ca(2+)-binding sites of the proteins were found to be highly conserved. The Ca(2+)-binding sites were also homologous to the Ca(2+)-binding sites of other C...

journal_title：Photochemistry and photobiology

authors： Tsuji FI,Ohmiya Y,Fagan TF,Toh H,Inouye S

更新日期：1995-10-01 00:00:00

abstract：:The photochemistry of caged compounds of the o-nitrobenzyl type has been investigated thoroughly in the past. However, even recently new side reactions have been discovered. Earlier, we reported [Bley, F., K. Schaper, and H. Görner (2008), Photochem. Photobiol.84 162-171] that we found long-lived triplet states which ...

journal_title：Photochemistry and photobiology

authors： Schaper K,Etinski M,Fleig T

更新日期：2009-09-01 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：:Cellular autofluorescence spectra were monitored in a single-beam gradient force optical trap ("optical tweezers") in order to probe the physiological effects of near infrared and UVA (320-400 nm) microirradiation. Prior to trapping, Chinese hamster ovary cells exhibited weak UVA-excited autofluorescence with maxima a...

journal_title：Photochemistry and photobiology

authors： König K,Liu Y,Sonek GJ,Berns MW,Tromberg BJ

更新日期：1995-11-01 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：:This research examines the behavior of ground-level solar UV radiation as measured by eight broadband meters in the continental United States during the period from late 1994 to late 1998. The goal is to define the variability that occurs in UV irradiance over time scales ranging from one to several years. The monthly...

journal_title：Photochemistry and photobiology

authors： Frederick JE,Slusser JR,Bigelow DS

更新日期：2000-10-01 00:00:00

abstract：:Although histochemical and immunohistochemical methods are the standard procedures in diagnosis of lymphoproliferative disorders, useful improvements in evidencing histopathologic manifestations can be obtained with the introduction of tissue autofluorescence analyses. We used microspectrofluorometry and a Multispectr...

journal_title：Photochemistry and photobiology

authors： Rigacci L,Alterini R,Bernabei PA,Ferrini PR,Agati G,Fusi F,Monici M

更新日期：2000-06-01 00:00:00

abstract：:Cyclooxygenase (COX)-2 inhibitors are known to be used as chemopreventative agents against certain malignancies. Thus far, there has been very limited information on whether COX-2 inhibitors protect against chronic narrow-band UVB (NB-UVB)-induced immunosuppression. The present study investigated the effect of nonsele...

journal_title：Photochemistry and photobiology

authors： Wu Y,Tai CL,Wei H,He F,Wang Y,Zhao Y,Chen HD

更新日期：2008-03-01 00:00:00

abstract：:The interaction between human alpha1-acid glycoprotein (orosomucoid) and the fluorescent probe, 2-p-toluidinylnaphthalene-6-sulfonate (TNS) has been studied. An association constant of 16.7 (+/- 3) x 10(3) M-1 was obtained for the complex at 20 degrees C with a stoichiometry of 1:1. From the effect of temperature on t...

journal_title：Photochemistry and photobiology

authors： Albani J,Vos R,Willaert K,Engelborghs Y

更新日期：1995-07-01 00:00:00

abstract：:This paper studies the dye-sensitized photooxidation of tyrosine (tyr) and tyr di- and tripeptides (tyr-tyr and tyr-tyr-tyr) mediated by singlet molecular oxygen (O2[1 delta g]) in alkaline media. Photooxidation quantum efficiencies (phi r) were obtained by determining the overall and reactive rate constants of intera...

journal_title：Photochemistry and photobiology

authors： Criado S,Soltermann AT,Marioli JM,García NA

更新日期：1998-10-01 00:00:00

abstract：:The photophysical properties of Piroxicam, a nonsteroidal anti-inflammatory drug (NSAID), were investigated at different pHext values in reversed micelles of Aerosol-OT (AOT) in iso-octane, using both steady-state and picosecond time-resolved fluorescence spectroscopy. In contrast with the very complex data obtained i...

journal_title：Photochemistry and photobiology

authors： Andrade SM,Costa SM,Pansu R

更新日期：2000-04-01 00:00:00

abstract：:UVB radiation contributes to both direct and indirect damage to the skin including the generation of free radicals and reactive oxygen species (ROS), inflammatory responses, immunosuppression and gene mutations, which can ultimately lead to photocarcinogenesis. A plant-derived flavonoid, baicalin, has been shown to ha...

journal_title：Photochemistry and photobiology

authors： Min W,Ahmad I,Chang ME,Burns EM,Qian Q,Yusuf N

更新日期：2015-11-01 00:00:00

abstract：:The UVA and UVB components of sunlight can produce three classes of bipyrimidine DNA photolesions [cyclobutane pyrimidine dimers (CPDs), pyrimidine (6-4) pyrimidone photoproducts (6-4PPs) and related Dewar valence isomers (DewarPPs)]. The UVA/UVB ratio of sunlight is high in winter and low in summer in the Northern He...

journal_title：Photochemistry and photobiology

authors： Nishimura K,Ikehata H,Douki T,Cadet J,Sugiura S,Mori T

更新日期：2020-12-03 00:00:00

abstract：:Elemental sulfur is a low-cost and abundant substance as one of the largest by-products of the oil industry which was widely used in many industrial activities. Cyclo-octasulfur (S8 ) is one of the sulfur allotropes that is a very stable substance in standard conditions. In this study, we report a low-cost and fast me...

journal_title：Photochemistry and photobiology

authors： Peyman VA,Azizian S

更新日期：2020-11-01 00:00:00

abstract：:The blue light photoreceptor phototropin mediates crucial processes in plants leading to optimization of photosynthesis. Phototropin comprises two flavin mononucleotide-binding LOV (light-, oxygen-, or voltage-sensitive) domains. The LOV domains undergo a photocycle upon illumination, in which two intermediates have b...

journal_title：Photochemistry and photobiology

authors： Bauer C,Rabl CR,Heberle J,Kottke T

更新日期：2011-05-01 00:00:00

abstract：:The phototoxic effects of demethylchlortetracycline (DMCT) with UVA radiation on isolated rat liver mitochondria were studied. DMCT at concentration of 21.5 microM with 5.53 x 10(-2) J cm-3 of UVA was found to be a potent uncoupler of oxidative phosphorylation. DMCT alone also uncoupled mitochondria but at higher conc...

journal_title：Photochemistry and photobiology

authors： Takagi S,Mizuno N,Adachi K,Wakabayashi T

更新日期：1990-02-01 00:00:00

abstract：:Fibrous proteins discolor on exposure to the UV component of sunlight. This effect is exacerbated in the presence of fluorescent whitening agents (FWAs), which are often applied to textiles to improve product brightness. Tryptophan photoproducts have been identified as significant contributors to protein photoyellowin...

journal_title：Photochemistry and photobiology

authors： Dyer JM,Clerens S,Cornellison CD,Murphy CJ,Maurdev G,Millington KR

更新日期：2009-11-01 00:00:00

abstract：:Drug delivery systems (DDS) capable of releasing an active molecule at the appropriate site and at a rate that adjusts in response to the progression of the disease or to certain functions/biorhythms of the organism are particularly appealing. Biocompatible materials sensitive to certain physiological variables or ext...

journal_title：Photochemistry and photobiology

authors： Alvarez-Lorenzo C,Bromberg L,Concheiro A

更新日期：2009-07-01 00:00:00

abstract：:Cold-inducible RNA binding protein (CIRP) is a stress-inducible protein, which could be activated by various cellular stresses, such as hypothermia, hypoxia and UV irradiation. Our previous study indicated that UVB radiation (3 mJ cm-2 ) induces CIRP expression, which promotes keratinocytes growth, survival and eventu...

journal_title：Photochemistry and photobiology

authors： Sun W,Liao Y,Yi Q,Wu S,Tang L,Tong L

更新日期：2018-11-01 00:00:00