Abstract：
:We have previously demonstrated the ability of UVC (254 nm) radiation to induce asynchronous polyoma replication in rat fibroblast cells (H3 line) that contain an integrated copy of polyoma virus. In the present study we show that general purpose lamps can induce polyoma replication in these cells as well. The amount of UV radiation emitted by three different light sources was determined and the effects of each source on the replication of polyoma DNA was assessed. Our findings indicate that a 100 W incandescent lamp had a minimal effect on replication, whereas a 90 s exposure to a halogen lamp or a 160 W mercury vapor lamp induced replication 1.5-fold and 2-fold, respectively, in comparison with nontreated controls. We have previously shown that asynchronous polyoma replication in H3 cells involves UV-inducible cellular protein factors. Our present results indicate that these factors are also activated by exposure to commonly used lamps that emit comparable doses of UV radiation.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Rutberg SE,Ronai Zdoi
10.1111/j.1751-1097.1993.tb09559.xsubject
Has Abstractpub_date
1993-08-01 00:00:00pages
265-9issue
2eissn
0031-8655issn
1751-1097journal_volume
58pub_type
杂志文章abstract：:Copper(II), in the presence of UV-B radiation (280-315 nm), can generate single-strand breaks in the sugar-phosphate backbone of pBR322 plasmid DNA. A low level of single-strand backbone breaks occurs in the presence of Cu(II) alone, but UV-B irradiation increases the rate by the more than 100-fold. Concomitant with t...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1993.tb02964.x
更新日期：1993-06-01 00:00:00
abstract：:Phototropin is a blue light-activated photoreceptor that plays a dominant role in the phototropism of plants. The protein contains two subunits that bind flavin mononucleotide (FMN), which are responsible for the initial steps of the light-induced reaction. It has been proposed that the photoexcited flavin molecule ad...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2003)077<0101:aiqcio>2.0.co;2
更新日期：2003-01-01 00:00:00
abstract：:The tetraruthenated porphyrin, mu-[meso-5,10,15,20-tetra(pyridyl)porphyrin]tetrakis[bis-(bipyridine) chloride ruthenium(II)] (TRP) is a supramolecular cationic species. The aim of the present investigation was to evaluate the photodynamic properties of TRP and Zn-TRP to damage DNA with emphasis on the mechanistic aspe...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：
更新日期：1998-11-01 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
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1990.tb01700.x
更新日期：1990-02-01 00:00:00
abstract：:Latia neritoides is a small limpet-like snail that produces a bright green bioluminescence (BL) via a unique light-emitting system. The process, mechanism, and even light emitter of its light emission remain unknown, although this BL has been known for decades. Unlike the other BL systems, neither the luciferin (Luc) ...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.12876
更新日期：2018-05-01 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
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2012.01232.x
更新日期：2013-03-01 00:00:00
abstract：:Eumelanin plays a variety of important physiological roles in human skin. However, its structure and fundamental properties still remain poorly understood. Although the absorbance of eumelanin is broad and reveals little about its structure, a variety of techniques have revealed the presence of a disordered array of c...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2007.00186.x
更新日期：2007-11-01 00:00:00
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
pub_type： 杂志文章
doi：10.1111/php.12215
更新日期：2014-03-01 00:00:00
abstract：:Cis-urocanic acid (UCA), formed in the epidermis by UV irradiation of trans-UCA, has been implicated as a mediator of the immunosuppression induced by UV exposure of the skin. This review covers recent work in which the wavelength dependence of cis-UCA formation, the interaction of UCA isomers with DNA, the effects of...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/j.1751-1097.1995.tb05261.x
更新日期：1995-08-01 00:00:00
abstract：:The multifunctional polypeptide cyclosporin synthetase (CySyn) remains one of the most complex nonribosomal peptide synthetase described. In this study we used a highly specific photoaffinity labeling procedure with the natural cofactor S-adenosyl-L-methionine (AdoMet), 14C-isotopically labeled at the Sdelta methyl gr...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2003)077<0129:plotnm>2.0.co;2
更新日期：2003-02-01 00:00:00
abstract：:Photodynamic therapy (PDT) of solid tumors elicits a strong, acute inflammatory response characterized by a rapid and massive infiltration of activated neutrophils into the tumor. The present study investigated the impact of PDT on the systemic and local (treatment site) kinetics of neutrophil trafficking and activity...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2001)074<0712:iosnri>2.0.co;2
更新日期：2001-11-01 00:00:00
abstract：:All-trans retinoic acid (ATRA) plays essential roles in the normal biological processes and the treatment of cancer and skin diseases. Considering its photosensitive property, many studies have been focused on the photochemistry of ATRA. In this study, we investigated the transient phenomena in the laser flash photoly...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.12128
更新日期：2013-09-01 00:00:00
abstract：:A visual chromophore analogue, 10-methyl-13-demethyl (dm) retinal, was synthesized and reconstituted with bleached bovine rhodopsin to form a visual pigment derivative with absorbance maximum at 505 nm. The investigations with this new compound were stimulated from recent results using 13-dm retinal as a chromophore t...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1997.tb01896.x
更新日期：1997-01-01 00:00:00
abstract：:Solar light leads to thymine dimers that are mutagenic and primary cause of skin cancer. Here, we report absorption and synchrotron radiation circular dichroism (CD) spectra of Tn single strands with different number n of bases (n = 2-7, 10, 11) recorded after various 254 nm irradiation times. From a principal compone...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.12183
更新日期：2014-01-01 00:00:00
abstract：:Light is a very important environmental factor that governs many cellular responses in organisms. As a consequence, organisms possess different kinds of light-sensing photoreceptors to regulate their physiological variables and adapt to a given habitat. The cryptochrome/photolyase family (CPF) includes photoreceptors ...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/php.12669
更新日期：2017-01-01 00:00:00
abstract：:Collagen was exposed to an ultraviolet (UV) lamp that emitted predominantly in the UVB range. The cross-linking of collagen type I and type IV by UV irradiation was observed. Amino acid analyses revealed that Tyr residues in both collagen types I and IV were decreased by irradiation. In collagen type IV, losses of His...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1995.tb08624.x
更新日期：1995-04-01 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
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1995.tb09143.x
更新日期：1995-11-01 00:00:00
abstract：:Immunosuppressive doses of solar-simulated UV radiation activate lymph node B cells that can suppress primary immunity by inhibiting the function of dendritic cells. The aim of this study was to determine the waveband responsible for activation of these suppressor B cells. We exposed C57BL/6 mice to various doses of e...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/2005-04-20-RA-495
更新日期：2005-11-01 00:00:00
abstract：:Cypridina luciferase (Cluc), a secreted luminescent protein identified from Cypridina noctiluca, has two N-glycosylation sites. In this study, we evaluated the effects of N-glycosylation on Cluc properties by creating site-directed mutagenic modifications at the consensus sequence for N-glycosylation (Asn-X-Ser/Thr). ...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.12847
更新日期：2018-03-01 00:00:00
abstract：:Restenosis results from intimal hyperplasia and constrictive remodeling following cardiovascular interventions. Photodynamic therapy (PDT) has been shown to inhibit intimal hyperplasia in vivo by preventing neointimal repopulation of the treated vessel. This study was undertaken in an attempt to further dissect the me...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2002)075<0046:morhvc>2.0.co;2
更新日期：2002-01-01 00:00:00
abstract：:The photocycle in photoactive yellow protein (PYP) crystals was studied by single-crystal absorption spectroscopy with experimental setups for low-temperature and time-resolved measurements. Thin and flat PYP crystals, suitable for light absorption studies, were obtained using special crystallization conditions. Illum...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/0031-8655(2003)078<0131:copiic>2.0.co;2
更新日期：2003-08-01 00:00:00
abstract：:Direct irradiation of estrone aryl and methyl sulfonates in different organic solvents under nitrogen atmosphere was investigated under steady-state conditions. The estrone derivatives reacted efficiently through the photo-Fries rearrangement reaction involving [1;3]-sulfonyl migration providing the ortho-sulfonyl est...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13272
更新日期：2021-01-01 00:00:00
abstract：:Tetraarylporphyrins substituted with nitro groups at beta-pyrrolic positions are potential candidates for electron-accepting pigments in model systems for photosynthesis. The photophysics of 2-nitro-5,10,15,20-tetra-p-tolylporphyrin and its zinc analog have been studied in order to evaluate this potential. The ground ...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1990.tb01733.x
更新日期：1990-04-01 00:00:00
abstract：:In the present study, photodynamic activity of a novel photosensitizer (PS), Chlorin e(6)-2.5 N-methyl-d-glucamine (BLC 1010), was evaluated using the chorioallantoic membrane (CAM) as an in vivo model. After intravenous (i.v.) injection of BLC 1010 into the CAM vasculature, the applicability of this drug for photodyn...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1562/2005-02-23-RA-448
更新日期：2005-11-01 00:00:00
abstract：:A new type of photochromic molecule that can be used for diffusion coefficient (D) measurements of various proteins in solution is described. The absorption spectrum of this molecule is changed upon photoexcitation by the trans-cis isomerization reaction. Target proteins were labeled by this photochromic molecule in t...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/j.1751-1097.2008.00315.x
更新日期：2008-07-01 00:00:00
abstract：:This work evaluated the photoprotective and antigenotoxic effects against ultraviolet B (UVB) radiation of flavonoid compounds apigenin, naringenin and pinocembrin. The photoprotective efficacy of these compounds was estimated using in vitro photoprotection indices, and the antigenotoxicity against UVB radiation was e...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章
doi：10.1111/php.13085
更新日期：2019-07-01 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
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1994.tb05080.x
更新日期：1994-08-01 00:00:00
abstract：:UV radiation is a potent DNA damaging agent and a known inducer of skin cancer in experimental animals. There is excellent scientific evidence to indicate that most non-melanoma human skin cancers are induced by repeated exposure to sunlight. UV radiation is unique in that it induces DNA damage that differs from the l...
journal_title：Photochemistry and photobiology
pub_type： 杂志文章,评审
doi：10.1111/j.1751-1097.1990.tb08452.x
更新日期：1990-12-01 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
pub_type： 杂志文章
doi：10.1111/j.1751-1097.1992.tb04226.x
更新日期：1992-02-01 00:00:00
abstract：:Cyanines are emerging as useful agents for photoreleasing biological compounds because of their capability of utilizing near-infrared (NIR) light. Another benefit is their ability to self-sensitize to produce singlet oxygen for the release of aryl amines, a process that has not been as feasible in the past. Here, we h...
journal_title：Photochemistry and photobiology
pub_type： 评论,杂志文章
doi：10.1111/php.13102
更新日期：2019-09-01 00:00:00
