A comparison of direct and liposomal antibody conjugates of sulfonated aluminum phthalocyanines for selective photoimmunotherapy of human bladder carcinoma.

abstract：:The interaction of photodynamic therapy (PDT) with 5-aminolevulinic acid (ALA) and hyperthermia is not well understood. In the present study, significant enhancement of tumor damage was observed after simultaneous application of ALA-PDT and IR-induced hyperthermia using a broad-band incoherent light source. One hour a...

journal_title：Photochemistry and photobiology

authors： Orenstein A,Kostenich G,Kopolovic Y,Babushkina T,Malik Z

更新日期：1999-06-01 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：:High-altitude Andean lakes (HAAL) are a treasure chest for microbiological research in South America. Their indigenous microbial communities are exposed to extremely high UV irradiation and to multiple chemical extremes (Arsenic, high salt content, alkalinity). Microbes are found both, free-living or associated into m...

journal_title：Photochemistry and photobiology

authors： Albarracín VH,Gärtner W,Farias ME

更新日期：2016-01-01 00:00:00

abstract：:Systemic injection of hematoporphyrin derivative (HpD) in contribution with visible light (red or blue-green) delivered by laser was used to treat a patient with psoriasis. The psoriatic lesions responded vigorously to laser treatments, forming eschars by 1 week post irradiation. In contrast, only minimal erythema was...

journal_title：Photochemistry and photobiology

authors： McCullough JL,Weinstein GD,Douglas JL,Berns MW

更新日期：1987-07-01 00:00:00

abstract：:Pharmacological therapy is widely used in the treatment of muscle injuries. On the other hand, low-level laser therapy (LLLT) arises as a promising nonpharmacological treatment. The aim of this study was to analyze the effects of sodium diclofenac (topical application) and LLLT on morphological aspects and gene expres...

journal_title：Photochemistry and photobiology

authors： de Almeida P,Lopes-Martins RÁ,Tomazoni SS,Albuquerque-Pontes GM,Santos LA,Vanin AA,Frigo L,Vieira RP,Albertini R,de Carvalho Pde T,Leal-Junior EC

更新日期：2013-03-01 00:00:00

abstract：:Sulfur-substituted nucleobases (a.k.a., thiobases) are among the world's leading prescriptions for chemotherapy and immunosuppression. Long-term treatment with azathioprine, 6-mercaptopurine and 6-thioguanine has been correlated with the photoinduced formation of carcinomas. Establishing an in-depth understanding of t...

journal_title：Photochemistry and photobiology

authors： Ashwood B,Pollum M,Crespo-Hernández CE

更新日期：2019-01-01 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 quantum yield, phi ZE, for configurational photoisomerization (4Z,15Z----4Z,15E) of bilirubin bound non-covalently to human serum albumin was determined (at 23 +/- 2 degrees C) by laser excitation and chromatographic analysis of products. Values obtained for photoexcitation at 465 nm were about one-half those prev...

journal_title：Photochemistry and photobiology

authors： Agati G,Fusi F,Pratesi R,McDonagh AF

更新日期：1992-02-01 00:00:00

abstract：:Photolysis of ester 1 in argon-saturated methanol and acetonitrile does not produce any product, whereas irradiation of 1 in oxygen-saturated methanol yields peroxide 2. Laser flash photolysis studies demonstrate that 1 undergoes intramolecular H atom abstraction to form biradical 3 (λmax ~340 nm), which intersystem c...

journal_title：Photochemistry and photobiology

authors： Das A,Lao EA,Gudmundsdottir AD

更新日期：2016-05-01 00:00:00

abstract：:Near-UV (337 nm) photoactivation of the 5-hydroxytryptophan decarboxylation reaction producing serotonin has been observed. The photoactivation effect was investigated as a function of fluence rate and fluence, and pH. Photoactivation of decarboxylase activity was found to occur at nearly neutral pH values (low activi...

journal_title：Photochemistry and photobiology

authors： Fraikin GY,Strakhovskaya MG,Ivanova EV,Rubin AB

更新日期：1989-04-01 00:00:00

abstract：:The psaI and psaL genes were characterized from the cyanobacterium Synechococcus sp. strain PCC 7002. The gene organization was different from that reported for other cyanobacteria with psaI occurring upstream and being divergently transcribed from the psaL gene. Mutants lacking PsaI or PsaL were generated by interpos...

journal_title：Photochemistry and photobiology

authors： Schluchter WM,Shen G,Zhao J,Bryant DA

更新日期：1996-07-01 00:00:00

abstract：:The protein environments surrounding the retinal tune electronic absorption maximum from 350 to 630 nm. Hybrid quantum mechanical/molecular mechanical (QM/MM) methods can be used in calculating excitation energies of retinal in its native protein environments and in studying the molecular basis of spectral tuning. We ...

journal_title：Photochemistry and photobiology

authors： Altun A,Yokoyama S,Morokuma K

更新日期：2008-07-01 00:00:00

abstract：:The incidence and prevalence of inflammatory bowel disease (IBD) are increasing worldwide. Some ecological studies show increasing incidence with increasing latitude. Ambient ultraviolet radiation varies inversely with latitude, and sun exposure of the skin is a major source of vitamin D. Vitamin D deficiency is commo...

journal_title：Photochemistry and photobiology

authors： Holmes EA,Rodney Harris RM,Lucas RM

更新日期：2019-01-01 00:00:00

abstract：:The aim of this investigation is the evaluation of DNA interaction of with tetraruthenated porphyrin (TRP) and of DNA damage in the presence of light. Direct-fluorescence and electronic absorption measurements after incubation of DNA with TRP indicate strong binding between pBR322 DNA or calf thymus DNA with the modif...

journal_title：Photochemistry and photobiology

authors： Onuki J,Ribas AV,Medeiros MH,Araki K,Toma HE,Catalani LH,Di Mascio P

更新日期：1996-03-01 00:00:00

abstract：:The relationship between levels of in vivo accumulated photosensitizer (Photofrin II), photodynamic cell inactivation upon in vitro or in vivo illumination, and changing tumor oxygenation was studied in the radiation-induced fibrosarcoma (RIF) mouse tumor model. In vivo porphyrin uptake by tumor cells was assessed by ...

journal_title：Photochemistry and photobiology

authors： Henderson BW,Fingar VH

更新日期：1989-03-01 00:00:00

abstract：:In an attempt to develop an efficient chemotherapeutic agent targeted at malignant cells that express receptors to gonadotropin releasing hormone (GnRH) we coupled [D-Lys6]GnRH covalently to an emodin derivative, i.e. emodic acid (Emo) to yield [D-Lys6(Emo)]GnRH. Emodin is a naturally occurring anthraquinone which is ...

journal_title：Photochemistry and photobiology

authors： Rahimipour S,Bilkis I,Péron V,Gescheidt G,Barbosa F,Mazur Y,Koch Y,Weiner L,Fridkin M

更新日期：2001-08-01 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：:We have used the complex of antigen with class II major histocompatibility proteins (Ia) in membrane-bound form to target a phototoxic compound to antigen-specific T cell hybridomas in vitro. The iodoacetamidyl ester of phototoxic pyrene was bound covalently to antigen-presenting cells (APC), and protein antigens were...

journal_title：Photochemistry and photobiology

authors： Chang NH,Rayner DC,Boggs JM

更新日期：1995-05-01 00:00:00

abstract：:This review focuses on damage photosensitized by the fluoroquinolone (FQ) antibacterial drugs. Different models are employed to study biosubstrate photodamage mediated by FQs (organisms, cells, isolated biomolecules and super molecules). Being that the effect of environment (polarity of the medium, ions, pH, binding w...

journal_title：Photochemistry and photobiology

authors： de Guidi G,Bracchitta G,Catalfo A

更新日期：2011-11-01 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：:Vacuum UV (VUV) process is an incipient advanced oxidation process, which can be used for water treatment. This process relies on the formation of hydroxyl radicals through the VUV-induced photolysis of water. In particular, the use of ozone-generating mercury vapor lamps, which emit 10% of the radiation at 185 nm and...

journal_title：Photochemistry and photobiology

authors： Duca C,Imoberdorf G,Mohseni M

更新日期：2014-01-01 00:00:00

abstract：:Light emitted by electronic photographic flash units is shown to damage bacteria and human skin fibroblasts deficient in repair systems, with survival curves very similar to those produced by 254 nm short UV. The lesions induced by these flashes are as photorepairable by the photolyase enzyme as those induced by 254 n...

journal_title：Photochemistry and photobiology

authors： Menezes S,Monteiro C

更新日期：1996-09-01 00:00:00

abstract：:Protoporphyrin IX dimethyl ester (PME), a dimethyl esterification of protoporphyrin IX (PpIX), exhibits higher intracellular uptake into NPC/CNE2 cells, a poorly differentiated human nasopharyngeal carcinoma, than does PpIX. Phototoxicity studies reveal PME to be a more potent photosensitizer than is PpIX, at the earl...

journal_title：Photochemistry and photobiology

authors： Yee KK,Soo KC,Bay BH,Olivo M

更新日期：2002-12-01 00:00:00

abstract：:The kinetics of transients formed under photoexcitation of benzophenone (B) dissolved in three different polymers was studied by ns laser flash photolysis. These polymers were the soft rubbers poly (ethylene-co-butylene) (EB), polystyrene block-poly(ethylene-ran-butylene)-block-polystyrene (SEBS) and hard polystyrene ...

journal_title：Photochemistry and photobiology

authors： Levin PP,Efremkin AF,Sultimova NB,Kasparov VV,Khudyakov IV

更新日期：2014-03-01 00:00:00

abstract：:The UV radiation environment on planetary surfaces and within atmospheres is of importance in a wide range of scientific disciplines. Solar UV radiation is a driving force of chemical and organic evolution and serves also as a constraint in biological evolution. In this work we modeled the transmission of present and ...

journal_title：Photochemistry and photobiology

authors： Rontó G,Bérces A,Lammer H,Cockell CS,Molina-Cuberos GJ,Patel MR,Selsis F

更新日期：2003-01-01 00:00:00

abstract：:Ultraviolet photolesions endow DNA with distinct structural and dynamic properties. Biophysical studies of photoproduct-containing DNA have shown that these lesions affect the mutagenic properties of DNA and damage recognition by DNA repair systems. Recently obtained high-resolution cocrystal structures of damaged DNA...

journal_title：Photochemistry and photobiology

authors： Park CJ,Lee JH,Choi BS

更新日期：2007-01-01 00:00:00

abstract：:Photo-Fries rearrangements of 4-dodecylphenyl phenylacetate have been investigated in polyethylene films with 0-71% crystallinity and in hexane over a range of temperatures. The results are compared to those reported previously from phenyl phenylacetate and 1-naphthyl tetradecanoate to assess the influence of a long a...

journal_title：Photochemistry and photobiology

authors： Luo C,Passin P,Weiss RG

更新日期：2006-01-01 00:00:00

abstract：:A novel laser system has been developed to study the effects of multiple laser pulses of differing wavelengths on cutaneous blood vessels in vivo, using the hamster dorsal skin flap preparation and in vitro, using cuvettes of whole or diluted blood. The system permits sequenced irradiation with well-defined intrapulse...

journal_title：Photochemistry and photobiology

authors： Barton JK,Frangineas G,Pummer H,Black JF

更新日期：2001-06-01 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：:The process of photoinduced hydroxylaminolysis has been re-examined in different bacteriorhodopsin (BR)-based media using O-substituted hydroxylamines, in particular, O-(4-nitrobenzyl) hydroxylamine hydrochloride (NBHA), O-(2,3,4,5,6-pentafluorobenzyl) hydroxylamine hydrochloride (FBHA) and O-(t-butyl) hydroxylamine h...

journal_title：Photochemistry and photobiology

authors： Dyukova TV,Druzhko AB

更新日期：2010-11-01 00:00:00