Biological weighting function for the mortality of Boeckella gracilipes (Copepoda, Crustacea) derived from experiments with natural solar radiation.

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：:The activity of the bimodal fluorescent protein (bmFP) (lambda max, 488 and 517 nm) in the in vitro luciferase reaction has been studied. The bmFP that is produced by Photobacterium phosphoreum strain bmFP is a dimer of two homologous subunits binding four riboflavin 5'-phosphate (FMN)-myristate chromophores. The addi...

journal_title：Photochemistry and photobiology

authors： Karatani H,Konaka T

更新日期：2000-02-01 00:00:00

abstract：:Pyocyanin (PyO-) (1-hydroxy-5-methylphenazine) is a cytotoxic compound secreted by Pseudomonas aeruginosa, an omnipresent bacterium and a human pathogen. We report that visible light illumination in the presence of rose bengal, or riboflavin, in aerated solutions (pH 7.0-7.2) induces irreversible loss of the pigment's...

journal_title：Photochemistry and photobiology

authors： Reszka KJ,Denning GM,Britigan BE

更新日期：2006-03-01 00:00:00

abstract：:Photodynamic therapy (PDT), carried out at low fluence rates, may enhance tumor response as well as affect treatment selectivity. We have studied the effects of fluence rate on the response of the murine radiation-induced fibrosarcoma (RIF) to PDT using Photofrin (5 mg/kg). Tumor response was tested over a large range...

journal_title：Photochemistry and photobiology

authors： Sitnik TM,Henderson BW

更新日期：1998-04-01 00:00:00

abstract：:A set of linear and asymmetric coumarin-imidazole hybrid compounds having a N,N-diethylamine at 7-position and imidazole at 3-position on the coumarin were synthesized. Insertion of thiophene π-spacer between coumarin and imidazole moieties (5b, 5d) leads to redshifted absorption and emission compared to 5a and 5c. Al...

journal_title：Photochemistry and photobiology

authors： Bhagwat AA,Avhad KC,Patil DS,Sekar N

更新日期：2019-05-01 00:00:00

abstract：:Action spectroscopy has a long history and is of central importance to photobiological studies. Action spectra were among the first assays to point to chlorophyll as the molecule most responsible for plant growth and to DNA as the genetic material. It is useful to construct action spectra early in the investigation of...

journal_title：Photochemistry and photobiology

authors： Coohill TP

更新日期：1991-11-01 00:00:00

abstract：:Vitamin A palmitate has been used in cosmetics; however, studies report that this substance shows photoreactivity that can lead to loss of safety and efficacy. On the other hand, photostabilizers have been used to increase sunscreen photostability and consequently their safety and effectiveness. Thus, this study aimed...

journal_title：Photochemistry and photobiology

authors： Benevenuto CG,Di Matteo MA,Maia Campos PM,Gaspar LR

更新日期：2010-11-01 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：:The crystal and molecular structure of the title compound 4 have been determined by single crystal X-ray crystallography. The structure shows the typical S4-ruffled conformation observed for Ni(II) tetrapyrroles. Compared to the structure of the methyl ester of (13(2)-demethoxycarbonyl-pheophorbidato a)nickel(II), 4 s...

journal_title：Photochemistry and photobiology

authors： Senge MO,Smith KM

更新日期：1994-08-01 00:00:00

abstract：:The response of normal brain to photodynamic therapy (PDT) was investigated in 62 Fisher rats. The animals were injected i.p. with Photofrin II (12.5 mg/kg). Forty-eight hours following injection, an area of dura 5 mm in diameter over the frontal cortex was photoactivated with red light (632 +/- 2 nm) at 100 mW cm-2, ...

journal_title：Photochemistry and photobiology

authors： Dereski MO,Chopp M,Garcia JH,Hetzel FW

更新日期：1991-07-01 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：:We previously reported that the efficacy of photodynamic therapy (PDT) in cell culture was enhanced by ursodeoxycholic acid (UDCA), a nontoxic bile acid. In this study, we examined the ability of UDCA to promote tumor control by PDT in the mouse, using the radiation-induced fibrosarcoma tumor and the photosensitizing ...

journal_title：Photochemistry and photobiology

authors： Garbo GM,Vicente MG,Fingar V,Kessel D

更新日期：2003-10-01 00:00:00

abstract：:Proton magnetic resonance imaging (MRI) and histological methods were used to evaluate photodynamic therapy (PDT)-induced hemorrhagic necrosis in the murine M1 tumor within 72 h of treatment of male DBA/2 mice. The effects of three photosensitizing drugs were investigated: Photofrin (n = 4), Zn (II) phthalocyanine (n ...

journal_title：Photochemistry and photobiology

authors： Winsborrow BG,Grondey H,Savoie H,Fyfe CA,Dolphin D

更新日期：1997-12-01 00:00:00

abstract：:The biguanide metformin is widely used for the treatment of Type-II diabetes. Its antiproliferative and pro-apoptotic effects in various tumor cells suggest its potential candidacy for cancer chemoprevention. Herein, we report that metformin significantly inhibited human epidermoid A431 tumor xenograft growth in nu/nu...

journal_title：Photochemistry and photobiology

authors： Chaudhary SC,Kurundkar D,Elmets CA,Kopelovich L,Athar M

更新日期：2012-09-01 00:00:00

abstract：:The nature of the interaction in buffered aqueous solution of several homo and heteroleptic ruthenium(II) polypyridyl complexes containing 2,2'-bipyridine (bpy), 2,2'-bipyrazine (bpz), 1,10-phenanthroline (phen), 4,7-diphenyl-1,10-phenanthroline (dip), 3,4,7,8-tetramethyl-1,10-phenanthroline (tmp), 1,4,5,8-tetraazaphe...

journal_title：Photochemistry and photobiology

authors： Kirsch-De Mesmaeker A,Orellana G,Barton JK,Turro NJ

更新日期：1990-09-01 00:00:00

abstract：:The contribution of DNA strand breaks accumulating in the course of nucleotide excision repair to upregulation of the p53 tumor suppressor protein was investigated in human dermal fibroblast strains after treatment with 254 nm ultraviolet (UV) light. For this purpose, fibroblast cultures were exposed to UV and incubat...

journal_title：Photochemistry and photobiology

authors： Enns L,Murray D,Mirzayans R

更新日期：2000-10-01 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：:The present work is aimed to synthesize CdTe/ZnSe core/shell quantum dots (QDs) in an easy way and to explore the possibilities of its application in in vitro imaging of chicken tissue and embryo. The QDs were prepared using microwave irradiation with different temperatures, which is a very easy and less time-consumin...

journal_title：Photochemistry and photobiology

authors： Moulick A,Blazkova I,Milosavljevic V,Fohlerova Z,Hubalek J,Kopel P,Vaculovicova M,Adam V,Kizek R

更新日期：2015-03-01 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：:Photoexcitation to generate triplet state has been proved to be the main photoreaction in homogeneous system for many benzoquinone derivatives, including oxidized coenzyme Q (CoQ) and its analogs. In the present study, microemulsion of CoQ, a heterogeneous system, is employed to mimic the distribution of CoQ in biomem...

journal_title：Photochemistry and photobiology

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

更新日期：2013-01-01 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：:Persister bacteria tolerate bactericidal antibiotics due to transient and reversible phenotypic changes. As these bacteria can limit the effectiveness of antibiotics to eradicate certain infections, their elimination is a relevant issue. Photodynamic therapy seems suitable for this purpose, but phenotypic tolerance to...

journal_title：Photochemistry and photobiology

authors： Oppezzo OJ,Forte Giacobone AF

更新日期：2018-01-01 00:00:00

abstract：:Inflammatory stimuli result in the production of cutaneous eicosanoids, which are known to contribute to the process of tumor promotion. Cyclooxygenase (COX), the rate-limiting enzyme for the production of prostaglandins (PG) from arachidonic acid, exists in at least two isoforms, COX-1 and COX-2. COX-1 is constitutiv...

journal_title：Photochemistry and photobiology

authors： An KP,Athar M,Tang X,Katiyar SK,Russo J,Beech J,Aszterbaum M,Kopelovich L,Epstein EH Jr,Mukhtar H,Bickers DR

更新日期：2002-07-01 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：:Work in the past 8 years, particularly in the past 1-2 years, has greatly expanded our understanding of the mechanisms by which ultraviolet irradiation stimulates melanogenesis in the skin. A direct effect of UV photons on DNA results in up-regulation of the gene for tyrosinase, the rate-limiting enzyme in melanin syn...

journal_title：Photochemistry and photobiology

authors： Gilchrest BA,Park HY,Eller MS,Yaar M

更新日期：1996-01-01 00:00:00

abstract：:When Escherichia coli cells were irradiated by UVA in the presence of 6-mercaptopurine (6-MP) or 2-thiouracil (S2Ura), two kinds of repair-deficient strains of recA- and uvrA- were killed more efficiently than the parental wild-type strain having normal repair capacities. In addition, these agents with UVA exposure gr...

journal_title：Photochemistry and photobiology

authors： Komeda K,Iwamoto S,Kominami S,Ohnishi T

更新日期：1997-01-01 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：:High temperature can promote cyanobacterial blooms, whereas ultraviolet radiation (UVR) can potentially depress cyanobacterial growth by damaging their photosynthetic apparatus. Although the damaging effect of UVR has been well documented, reports on the interactive effects of UV radiation exposure and warming on cyan...

journal_title：Photochemistry and photobiology

authors： Noyma NP,Mesquita MCB,Roland F,Marinho MM,Huszar VLM,Lürling M

更新日期：2021-01-04 00:00:00

abstract：:The thermodynamic parameters for the formation of the free radicals upon electron transfer quenching of the flavin triplet state (3FMN) by tryptophan and tyrosine, Delta(FR)H and Delta(FR)V, were obtained in aqueous solution by the application of laser-induced optoacoustic spectroscopy at various temperatures. The Del...

journal_title：Photochemistry and photobiology

authors： Crovetto L,Martínez-Junza V,Braslavsky SE

更新日期：2006-01-01 00:00:00

abstract：:The synthesis of a molecule containing hypericin and luciferin moieties joined by a tether is reported. The light-induced (in vitro) antiviral activity as well as the photophysical properties of this new compound are measured and compared with those of the parent compounds, hypericin and pseudohypericin. This tethered...

journal_title：Photochemistry and photobiology

authors： Wen J,Chowdhury P,Wills NJ,Wannemuehler Y,Park J,Kesavan S,Carpenter S,Kraus GA,Petrich JW

更新日期：2002-08-01 00:00:00