Protective properties of novel S-acyl-glutathione thioesters against ultraviolet-induced oxidative stress.

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：:Herein, we present a comparative study about the photoinactivation of Staphylococcus aureus (Gram-positive model) and Escherichia coli (Gram-negative model) employing a neutral and a dicationic axially functionalized SiIV -phthalocyanine. Depending on the charge of the siloxane moiety (neutral monosaccharide or cation...

journal_title：Photochemistry and photobiology

authors： Grüner MC,Niemann S,Faust A,Strassert CA

更新日期：2018-09-01 00:00:00

abstract：:To clarify the role of the Golgi apparatus in photodynamic therapy-induced apoptosis, its signaling pathway was studied after photodynamic treatment of human cervix carcinoma cell line HeLa, in which a photosensitizer, 2,4,5,7-tetrabromorhodamine 123 bromide (TBR), was incorporated into the Golgi apparatus. Laser scan...

journal_title：Photochemistry and photobiology

authors： Ogata M,Inanami O,Nakajima M,Nakajima T,Hiraoka W,Kuwabara M

更新日期：2003-09-01 00:00:00

abstract：:The proteins induced by heat and other stressors, called heat shock proteins (HSP) or stress proteins, are considered to play a general role in protection from cellular injury. Exposure to UVA (320-400 nm) following application of 8-methoxypsoralen (8-MOP), termed PUVA is commonly used in the field of dermatology. In ...

journal_title：Photochemistry and photobiology

authors： Muramatsu T,Yamashina Y,Tada H,Kobayashi N,Yamaji M,Ohno H,Shirai T,Takahashi A,Ohnishi T

更新日期：1993-12-01 00:00:00

abstract：:In this issue, we offer a symposium-in-print that is focused on several new advancements in fundamental research related to the family of GFP (green fluorescent protein)-like proteins. A few applied aspects are also included to illustrate the impact this amazing set of colored proteins has made on our understanding of...

journal_title：Photochemistry and photobiology

authors： Wachter RM

更新日期：2006-03-01 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：:We investigated the hypothesis that the strength of the activation of the intra-S DNA damage checkpoint varies within the S phase. Synchronized diploid human fibroblasts were exposed to either 0 or 2.5 J m(-2) UVC in early, mid- and late-S phase. The endpoints measured were the following: (1) radio-resistant DNA synth...

journal_title：Photochemistry and photobiology

authors： Chastain PD 2nd,Brylawski BP,Zhou YC,Rao S,Chu H,Ibrahim JG,Kaufmann WK,Cordeiro-Stone M

更新日期：2015-01-01 00:00:00

abstract：:The capacity of some linear and angular furocoumarins to induce DNA-protein cross-links by UVA (320-400 nm) irradiation has been evaluated in Chinese hamster ovary cells. Two linear furocoumarins, psoralen and 8-methoxypsoralen appeared to be capable of inducing DNA-protein cross-links to a noticeable extent. 4'-Methy...

journal_title：Photochemistry and photobiology

authors： Bordin F,Carlassare F,Busulini L,Baccichetti F

更新日期：1993-07-01 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：:An open three-compartment pharmacokinetic model was applied to the in vivo quantitative structure-activity relationship (QSAR) data of a homologous series of pyropheophorbide photosensitizers for photodynamic therapy (PDT). The physical model was a lipid compartment sandwiched between two identical aqueous compartment...

journal_title：Photochemistry and photobiology

authors： Potter WR,Henderson BW,Bellnier DA,Pandey RK,Vaughan LA,Weishaupt KR,Dougherty TJ

更新日期：1999-11-01 00:00:00

abstract：:Photodamage to the endoplasmic reticulum (ER) can initiate a death pathway termed paraptosis. The "canonical" model of paraptosis, initiated by certain drugs and other stimuli, requires a brief interval of protein synthesis, involves the action of MAP kinases and can be followed by biochemical markers. The latter incl...

journal_title：Photochemistry and photobiology

authors： Kessel D

更新日期：2020-09-01 00:00:00

abstract：:The recently discovered photo-activated adenylyl cyclase (mPAC from Microcoleus chthonoplastes) is the first PAC that owes a light-, oxygen- and voltage-sensitive (LOV) domain for blue-light sensing. The photoreaction of the mPAC receptor was studied by time-resolved UV/vis and light-induced Fourier transform infrared...

journal_title：Photochemistry and photobiology

authors： Kerruth S,Langner P,Raffelberg S,Gärtner W,Heberle J

更新日期：2017-05-01 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：:Evidence is mounting that UV-B and UV-A radiation affect skin differently in responses as diverse as erythema and elastosis. We found in this study that collagen metabolism was also differentially affected. Albino hairless mice were irradiated with two UV-A sources: (1) UVASUN 3000 (340-400 nm) for cumulative exposure...

journal_title：Photochemistry and photobiology

authors： Kligman LH,Gebre M

更新日期：1991-08-01 00:00:00

abstract：:Towards our overall objectives of developing potent antimicrobial materials to combat the escalating threat to human health posed by the transmission of surface-adhering pathogenic bacteria, we have investigated the photobactericidal activity of cellulose nanocrystals that have been modified with a porphyrin-derived p...

journal_title：Photochemistry and photobiology

authors： Carpenter BL,Feese E,Sadeghifar H,Argyropoulos DS,Ghiladi RA

更新日期：2012-05-01 00:00:00

abstract：:Continuous wave and pulsed laser ablation of tissue is described as an explosive event. A subsurface temperature maximum and superheated tissue produce high pressures that eject fragments from the tissue. Decreased water content due to dehydration and vaporization decreases thermal conductivity which reduces heat cond...

journal_title：Photochemistry and photobiology

authors： Welch AJ,Motamedi M,Rastegar S,LeCarpentier GL,Jansen D

更新日期：1991-06-01 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：: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：:Laser flash photolysis was used to determine the kinetics of electron transfer between membrane-bound triplet chlorophyll (3C), cytochrome c (cyt c) located in the external water phase, and vesicle-reconstituted cytochrome c oxidase (CCO). 2,5-Di-t-butyl benzoquinone (2,5 TBQ) was used as an electron transfer mediator...

journal_title：Photochemistry and photobiology

authors： Chamupathi VG,Moezzi DM,Tollin G

更新日期：1990-10-01 00:00:00

abstract：:The azide ion is a strong physical quencher of singlet molecular oxygen (1O2) and is frequently employed to show involvement of 1O2 in oxidation processes. Rate constants (k(q)) for the quenching of 1O2 by azide are routinely used as standards to calculate k(q) values for quenching by other substrates. We have measure...

journal_title：Photochemistry and photobiology

authors： Li MY,Cline CS,Koker EB,Carmichael HH,Chignell CF,Bilski P

更新日期：2001-12-01 00:00:00

abstract：:Demetalation kinetics of bacteriochlorophylls (BChls) c, d and e from green sulfur photosynthetic bacteria were studied under weakly acidic conditions. Demetalation rate constants of BChl e possessing a formyl group at the 7-position were significantly smaller than those of BChls c and d, which had a methyl group at t...

journal_title：Photochemistry and photobiology

authors： Hirai Y,Tamiaki H,Kashimura S,Saga Y

更新日期：2009-09-01 00:00:00

abstract：:In studies of the biological effects of UV radiation, ozone depletion can be mimicked by performing the study under ambient conditions and adding radiation with UV-B lamps. We evaluated this methodology at three different locations along a latitudinal gradient: Rimouski (Canada), Ubatuba (Brazil) and Ushuaia (Argentin...

journal_title：Photochemistry and photobiology

authors： Díaz S,Camilión C,Escobar J,Deferrari G,Roy S,Lacoste K,Demers S,Belzile C,Ferreyra G,Gianesella S,Gosselin M,Nozais C,Pelletier E,Schloss I,Vernet M

更新日期：2006-07-01 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：:Quantum yields for the formation of superoxide ions, O2-., and singlet oxygen, 1O2, were determined during the photolyses of gilvocarcin M (GM) in air-saturated dry dimethylsulfoxide (DMSO) and in 45:55 (vol/vol) DMSO-water mixtures. The quantum yield for the photoreduction of methyl viologen by GM in nitrogen-saturat...

journal_title：Photochemistry and photobiology

authors： Alegría AE,Zayas L,Guevara N

更新日期：1995-09-01 00:00:00

abstract：:Schinus terebinthifolius is a plant rich in phenolic compounds, which have antioxidant properties and can provide new opportunities for treatment and prevention of diseases mediated by ultraviolet radiation like photoaging and skin cancer. The aim of this study was to evaluate the photoprotective potential and ex vivo...

journal_title：Photochemistry and photobiology

authors： Bulla MK,Hernandes L,Baesso ML,Nogueira AC,Bento AC,Bortoluzzi BB,Serra LZ,Cortez DA

更新日期：2015-05-01 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：:The seminal discovery by James Cleaver of defective DNA repair in xeroderma pigmentosum (XP) opened up an ever-expanding field of DNA repair-related disorders. In addition, it put XP on the map and has led to improved diagnosis, care and management of affected patients. In the United Kingdom, we recently established a...

journal_title：Photochemistry and photobiology

authors： Lehmann AR

更新日期：2015-03-01 00:00:00

abstract：:Bacteriochlorophyll (BChl) e was coassembled with BChl c in Triton X-100 micelles in aqueous solutions. The Qy absorption bands of the coaggregates were positioned between those of aggregates consisting solely of BChl c or e. The electronic absorption spectra of the coaggregates could not be reproduced by linear combi...

journal_title：Photochemistry and photobiology

authors： Saga Y,Saiki T,Takahashi N,Shibata Y,Tamiaki H

更新日期：2014-05-01 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：: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