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Light (8):
Recent article
Light
Abstract
A key to understanding the biological function(s) of the aryl hydrocarbon receptor (AHR) - a xenobiotic-activated receptor - is to identify its endogenous ligand(s). The discovery of a tryptophan photoproduct 6-formylindolo[3,2-b]carbazole (FICZ) as an endogenous, high affinity agonist of AHR filled...
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PMID: 21883026
PDF is available here.
PDF is available here.
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Abstract
Our study probed the relationship between field dependence and the development of nausea in light and dark during whole-body, off vertical axis rotation (OVAR).
There were 24 subjects who underwent OVAR at 0.2 Hz, 18 degree tilt. Exposures were undertaken in both light and darkness i...
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PMID: 21961400
PDF is available here.
PDF is available here.
Abstract
The mussel Mytilus galloprovincialis is a common aquaculture species, and also a major fouling organism that has negative economic impacts. There are no standard assay conditions for this important species and therefore, this study quantified the effect of key factors on the settlement of pediveliger...
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PMID: 21827335
PDF is available here.
PDF is available here.
Abstract
The mussel Mytilus galloprovincialis is a common aquaculture species, and also a major fouling organism that has negative economic impacts. There are no standard assay conditions for this important species and therefore, this study quantified the effect of key factors on the settlement of pediveliger...
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PMID: 21827335
PDF is available here.
PDF is available here.
Ukrainskij biokhimicheskij zhurnal/Ukrayins'kij biokhimichnij zhurnal/Ukrainian biochemical journal (82)6 2011
Abstract
The influence of modulators of calcium exchange in mitochondria--oligomycin, Mg2+ and ruthenium red (RuR)--on the myometrium mitochondria size and granularity was studied in the work. The study of the mitochondria size was carried out using the photon correlation spectroscopy. It was shown that the a...
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PMID: 21805862
PDF is available here.
PDF is available here.
Abstract
We introduce a novel nanoparticle-enhanced biophysical stimulus based on the photoacoustic (PA) effect. We demonstrate that the PA effect differentiates bone marrow-derived marrow stromal cells (MSCs) grown on poly(lactic-co-glycolic acid) (PLGA) polymer films toward osteoblasts. We further show tha...
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PMID: 21395444
PDF is available here.
PDF is available here.
Medical Physics (38)7 2011
Abstract
Ultraviolet phototherapy is a widely used treatment which has exceptional success with a variety of skin conditions. Over-exposure to ultraviolet radiation (UVR) can however be detrimental and cause side effects such as erythema, photokeratisis, and even skin cancer. Quantifying pati...
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PMID: 21859032
PDF is available here.
PDF is available here.
Medical Physics (38)7 2011
Abstract
This work aims at assessing, through experimental measurements and Monte Carlo calculations, the scatter to primary ratio (SPR) for the micro-CT subsystem of the FLEX Triumph preclinical PET-CT scanner to improve its quantitative capabilities.
Experimental measurement...
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PMID: 21859017
PDF is available here.
PDF is available here.
Abstract
We demonstrated that the hydrophobic property was controlled by the distribution in crystal size of the closed-ring isomer of the diarylethene. Visible-light irradiation of both rough surfaces afforded surfaces with cubic-shaped micro-crystals of the open-ring isomer.
Copyright © 20...
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PMID: 21717577
PDF is available here.
PDF is available here.
Abstract
We developed a zwitterionic amino acid tethered amphiphilic molecule 1, which gave rise to a remarkably stiff hydrogel comparable with polymer-based agarose gel, retaining reversible thermal-responsive properties. In this study, we describe that rational accumulation of multiple and orthogonal nonco...
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PMID: 21721133
PDF is available here.
PDF is available here.
Abstract
The discovery of the period gene mutants in 1971 provided the first evidence that daily rhythms in the sleep-wake cycle of a multicellular organism, the fruit fly Drosophila melanogaster, had an underlying genetic basis. Subsequent research has established that the biological clock mechanism in flies...
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PMID: 21819382
PDF is available here.
PDF is available here.
Biomacromolecules (12)6 2011
Abstract
It was more than 50 years ago that an appearance of birefringence in alginate gels prepared under cation flow was reported for the first time, however, the anisotropic structure of the alginate gel has not been studied in detail. In the present study, anisotropic Ca-alginate gels wer...
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PMID: 21504159
PDF is available here.
PDF is available here.
Abstract
Our study concludes that cellular uptake and cytotoxicity of DOX can be improved in MES-SA/Dx5 cells by loading DOX into PLGA NPs. DNPs targeted to membrane receptors may enhance cellular uptake and cytotoxicity in SKOV-3 cells. FROM THE CLINICAL EDITOR: The authors of this study compare the cellula...
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PMID: 21094277
PDF is available here.
PDF is available here.
Abstract
Spores of four Frankia strains, the nitrogen-fixing actinomycete, were exposed to short wavelength UV-C radiation of 254 nm at 1 lux cm(2) (0.24 mw cm2 of energy) for 10 min. The used strains were HFP020203, UGL020604, UGL020602q and ORS021001. Exposure to UV was followed by reactivation with visible...
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PMID: 21715279
PDF is available here.
PDF is available here.
Plant Biology (62)1 2011
Abstract
The epigenomic regulation of chromatin structure and genome stability is essential for the interpretation of genetic information and ultimately the determination of phenotype. High-resolution maps of plant epigenomes have been obtained through a combination of chromatin technologies...
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PMID: 21438682
PDF is available here.
PDF is available here.
Dental update (38)5 2011
Abstract
The 'dark halo' present in the enamel surrounding anterior composite restorations spoils the appearance of the restoration and is very difficult to control. This article offers an explanation for its causes and proposes clinical solutions. The behaviour of the transmitted light may be handled through...
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PMID: 21834311
PDF is available here.
PDF is available here.
Abstract
We report a theoretical study of second-harmonic generation (SHG) from the collagen fibrils which have a tilt angle Φ between their axes with the plane of the polarization angle α of the linearly polarized focused light. The effects of Φ as well as α on SHG emission have been investigated. Our r...
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PMID: 21613673
PDF is available here.
PDF is available here.
Abstract
We found that overexpression of SGR (Ov-SGR) resulted in the generation of singlet oxygen and other reactive oxygen species and produced a chlorophyll-dependent regional cell death phenotype on leaves of rice seedlings. Transcriptome analyses using Affymetrix Rice GeneChips revealed that Ov-SGR rice...
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PMID: 21375689
PDF is available here.
PDF is available here.
Abstract
We show that the mechanism revealed for activation of the wild-type complex, namely an outward tilt motion of the cytoplasmic part of the receptor helix F and a concomitant rotation of the transmembrane transducer helix TM2, is also valid for the D75N variant. Apparently, the D75N mutation shifts th...
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PMID: 21539797
PDF is available here.
PDF is available here.
médecine/sciences (27)5 2011
Abstract
médecine/sciences (27)5 2011
Abstract
Abstract
Biochimica et Biophysica Acta (1810)7 2011
Abstract
Phloxine B (PhB; 2',4',5',7'-tetrabromo-4,5,6,7-tetrachloro-fluorescein), an artificial xanthene colorant, has been used as a red coloring agent in drugs and cosmetics as well as foods in some countries. However, little effort has been devoted to the study of this colorant as a potentially useful med...
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PMID: 21565256
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1807)9 2011
Abstract
We assume that conformational changes are only induced when Q(A) is reduced and relax rapidly on re-oxidation. This would explain the relationship between the fluorescence rise and the ETC-reduction.
Copyright © 2011. Published by Elsevier B.V....
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PMID: 21669182
PDF is available here.
PDF is available here.
Abstract
We propose the functionalization of MNPs via a two-steps strategy that takes advantage of the ionic reversible interactions between the Ab and the MNP. These interactions make possible the orientation of the Ab on the MNP surface before being attached in an irreversible way via covalent bonds. Three...
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PMID: 21526783
PDF is available here.
PDF is available here.
Abstract
Two series of poly(ether-ester)-based bis-functional macromers terminated with acrylate groups and a well-defined number of ester bonds were synthesized. One series had a chain of 1, 3 or 5 ester bonds at both ends of the central poly(ethylene glycol) block (molecular weight, about 1...
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PMID: 21095246
PDF is available here.
PDF is available here.
Cellular Microbiology (13)4 2011
Abstract
We sought to determine whether V. fischeri MAMPs, specifically lipopolysaccharide (LPS) and the peptidoglycan derivative tracheal cytotoxin (TCT), attenuate NOS/NO, and whether this activity mediates the MAMPs-induced light organ morphogenesis. Using confocal microscopy, we characterized levels of N...
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PMID: 21091598
PDF is available here.
PDF is available here.
Abstract
Intermittent Photic Stimulation (IPS) is a well recognized provocation maneuver during EEG recording which helps in identifying underlying photosensitivity. The frequency and characteristics of various responses to photosensitivity among our adult patients was determine. EEGs of subj...
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PMID: 21465980
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1807)7 2011
Abstract
We examined energy transfer dynamics from the photosystem II reaction center (PSII-RC) in intact red algae cells of Porphyridium cruentum, Bangia fuscopurpurea, Porphyra yezoensis, Chondrus giganteus, and Prionitis crispata. Time resolved fluorescence measurements were conducted in the range of 0-80n...
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PMID: 21496452
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We used the infrared amide I' band to study the protein conformation, and the position of the antisymmetric stretching band of the methylene groups in the lipid hydrocarbon chains to study the lipid order. Lipid-protein complexes were studied in media of low and high ionic strengths. In solution, β...
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PMID: 21600190
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We present the efficient synthesis of a series of degradable multivalent cationic lipids (CMVLn, n=2 to 5) containing a disulfide bond spacer between headgroup and lipophilic tails. This spacer is designed to be cleaved in the reducing milieu of the cytoplasm and thus decrease lipid toxicity. Small...
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PMID: 21640069
PDF is available here.
PDF is available here.
Abstract
We present a new technique, pulsed magneto-motive ultrasound imaging, which is capable of in vivo imaging of magnetic nanoparticles in real time and at sufficient depth. In pulsed magneto-motive ultrasound imaging, an external high-strength pulsed magnetic field is applied to induce the motion withi...
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PMID: 21439255
PDF is available here.
PDF is available here.
Abstract
We have analyzed the dynamics of the rice etioplast membrane proteome during the early phase of de-etiolation using iTRAQ-based relative protein quantification. Several hundred plastid proteins were identified from enriched membranes, including 36 putative transporters. Hierarchical clustering revea...
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PMID: 21433289
PDF is available here.
PDF is available here.
Developmental Cell (20)3 2011
Abstract
Abstract
Abstract
To evaluate the influence of different tertiary amines on degree of conversion (DC), shrinkage-strain, shrinkage-strain rate, Knoop microhardness, and color and transmittance stabilities of experimental resins containing BisGMA/TEGDMA (3:1wt), 0.25wt% camphorquinone, 1wt% amine (DMAEMA, CEMA, DMPT, D...
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PMID: 21388670
PDF is available here.
PDF is available here.
Abstract
This work aimed to compare methods for the formation of complexes of bixin and curcumin with β-cyclodextrin (β-CD) and to evaluate the stability of the complexes formed by these methods and their food applications. The stoichiometric relationship between curcumin and β-CD was 1:2 and that between...
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PMID: 21381747
PDF is available here.
PDF is available here.
Abstract
We analyze theoretically how the thickness of the covering water layer influences the structural and orientational information contained in the recorded diffraction images. This study has implications for planned experiments on single-particle imaging with XFELs....
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PMID: 21517525
PDF is available here.
PDF is available here.
Abstract
We study the response of one-dimensional diffusive systems, consisting of particles interacting via symmetric or asymmetric exclusion, to time-periodic driving from two reservoirs coupled to the ends. The dynamical response of the system can be characterized in terms of the structure factor. We find...
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PMID: 21517462
PDF is available here.
PDF is available here.
Abstract
We report the results of an experimental study of the microstructure of dispersions of Carbopol ETD 2050, a model yield-stress fluid. Using two different light scattering instruments, measurements were made over three decades in scattering wave vector, from 0.02 to 25 μm^{-1}. These measurements re...
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PMID: 21517498
PDF is available here.
PDF is available here.
Abstract
We also demonstrated that BICU can induce light per se by provoking pigment retraction in the pigmented cells composing the iris-like structure of the photophore, attaining, however, only about 10% of hormonally induced luminescence intensity at 10(-3)mol L(-1). This strongly supports that a GABA in...
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PMID: 21070868
PDF is available here.
PDF is available here.
Abstract
Coupling a reactive metal to light absorbers affords molecular devices for photoinitiated electron collection and photocatalytic conversion of substrates to fuels. A new Ru(II) ,Pt(II) tetrametallic supramolecule, [{(phen)(2) Ru(dpp)}(2) Ru(dpq)PtCl(2) ](PF(6) )(6) , and the trimetal...
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PMID: 21328554
PDF is available here.
PDF is available here.
Abstract
We present here a method to combine S-nitrosocysteine with TiO(2) nanotube-doped PbS quantum dots (PbS QDs) as a nitric oxide-releasing vehicle to promote production of singlet oxygen. The PbS QDs with a diameter ∼3.6 nm (PbS/TNTs) were attached to the TiO(2) nanotube by using a thiolactic acid li...
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PMID: 21341648
PDF is available here.
PDF is available here.
Oral Oncology (47)2 2011
Abstract
The objective of this study was to assess the efficacy of a novel visible-light therapy (VLT) device for the prevention of oral mucositis in hematopoietic stem cell transplantation (HSCT) patients. A VLT-device suitable for intra-oral use was applied to 20 patients undergoing HSCT. The study design...
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PMID: 21163686
PDF is available here.
PDF is available here.
Hereditas (Beijing) (33)2 2011
Abstract
We discussed the molecular basis of stomatal development and physiological mechanisms regulating this process. Future prospects related to stomatal development are proposed....
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PMID: 21377969
PDF is available here.
PDF is available here.
Abstract
Photosynthetic light acclimation is an important process that allows plants to optimize the efficiency of photosynthesis, which is the core technology for green energy. However, currently little is known about the molecular mechanisms behind the regulation of the photosynthetic light acclimation resp...
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PMID: 21834997
PDF is available here.
PDF is available here.
Abstract
To search for agents affecting thermal stability of proteins, a test based on the registration of protein aggregation in the regime of heating with a constant rate was used. The initial parts of the dependences of the light scattering intensity (I) on temperature (T) were analyzed us...
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PMID: 21760963
PDF is available here.
PDF is available here.
Abstract
We report experimental results of EN interactions with exopolymeric substances (EPS) from three marine phytoplankton species: Amphora sp., Ankistrodesmus angustus and Phaeodactylum tricornutum. EPS are polysaccharide-rich anionic colloid polymers released by various microorganisms that can assemble...
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PMID: 21811550
PDF is available here.
PDF is available here.
Abstract
The present communication reports on the first preparation of reduced graphene oxide (rGO) via surface plasmon resonance (SPR)-induced visible light photocatalytic reduction of GO with the use of Ag nanoparticles (AgNPs) as a plasmonic photocatalyst in the presence of an electron don...
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PMID: 21451827
PDF is available here.
PDF is available here.
Abstract
Exciton quenching dynamics has been systematically studied in pristine P3HT and nano phase separated P3HT/PCBM blend films under various excitation intensities by femtosecond fluorescence up-conversion technique. The behaviors of excitons in the films can be well described by a three...
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PMID: 21491032
PDF is available here.
PDF is available here.
Abstract
We have determined the sequence of nine al-2 mutant alleles and analyzed the carotenoid content in the corresponding strains. One of the mutants is reddish and it is mutated in the cyclase domain of the protein, and the remaining eight mutants are albino and harbor different mutations on the phytoen...
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PMID: 21818281
PDF is available here.
PDF is available here.
Abstract
We describe the application of experimental data and modeling of intracellular endocytic trafficking mechanisms with a focus on the process of clathrin-mediated endocytosis. A detailed parts-list for the protein-protein interactions in clathrin-mediated endocytosis has been available for some time....
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PMID: 21792431
PDF is available here.
PDF is available here.
Abstract
We examined morphological characteristics and physiological properties of these DRN projecting ganglion cells.
The Mongolian gerbils are highly visual rodents with a diurnal/crepuscular activity rhythm. It has been widely used as experimental animals of various studies including seas...
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PMID: 21552551
PDF is available here.
PDF is available here.
Abstract
We demonstrate an auditory capability in a broad suite of previously neglected taxa, and provide the first evidence in any marine organisms that reef noise can act as a deterrent. In contrast to the larvae of species that require reef habitat for future success, which showed an attraction to broadca...
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PMID: 21326604
PDF is available here.
PDF is available here.
Abstract
To propose a new objective scatter index (OSI) based in the analysis of double-pass images of a point source to rank and classify cataract patients. This classification scheme is compared with a current subjective system.
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PMID: 21326868
PDF is available here.
PDF is available here.
Abstract
This study was aimed to investigate the influence of Elodea canadensis shoots on surrounding water pH in the presence of cadmium and the effect of plant-induced pH on cadmium uptake. The pH change in the surrounding nutrient solution and Cd uptake by Elodea shoots were investigated after cultivation...
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PMID: 21598770
PDF is available here.
PDF is available here.
Thiazole orange (TO) as a light-switch probe: a combined quantum-mechanical and spectroscopic study.
Abstract
A Density Functional Theory (DFT) study of the absorbance and fluorescence emission characteristics of the cyanine thiazole orange (TO) in solution and when intercalated in DNA was carried out in combination with spectrophotometric and spectrofluorometric experiments under different conditions (tempe...
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PMID: 21660321
PDF is available here.
PDF is available here.
Abstract
We examined the influence of longitudinal changes in environmental conditions on water-column nutrient composition during summer base flow across a network of sites ranging from strongly heterotrophic headwater streams to larger, more autotrophic sites downstream. Small streams (0.1-10 km2 watershed...
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PMID: 21560684
PDF is available here.
PDF is available here.
Abstract
methyl aminolevulinate (MAL) is a recently FDA-approved molecule for photodynamic therapy (PDT) in the treatment of nonhyperkeratotic actinic keratoses (AK). In the U.S., aminolevulinic acid (ALA) has been used in an off-label manner with photodynamic therapy for the treatment of chr...
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PMID: 21197524
PDF is available here.
PDF is available here.
Abstract
We have utilized sensitive proteomic approaches to examine the impact of diurnal rhythms on the protein complement in Cyanothece 51142. We found that 250 proteins accounting for ∼5% of the predicted ORFs from the Cyanothece 51142 genome and 20% of proteins detected under alternating light/dark con...
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PMID: 21364985
PDF is available here.
PDF is available here.