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Journal of Photochemistry and Photobiology. B, Biology

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https://www.readbyqxmd.com/read/28319870/topical-application-of-neem-leaves-prevents-wrinkles-formation-in-uvb-exposed-hairless-mice
#1
Hien T T Ngo, Eunson Hwang, Seul-A Seo, Bom Park, Zheng-Wang Sun, Mengyang Zhang, Yu-Kyong Shin, Tae-Hoo Yi
No abstract text is available yet for this article.
March 14, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28319869/biofilm-inhibition-formation-of-clinical-strains-of-pseudomonas-aeruginosa-mutans-photocatalytic-activity-of-azo-dye-and-gc-ms-analysis-of-leaves-of-lagerstroemia-speciosa
#2
V Sai Saraswathi, Neethu Kamarudheen, K V Bhaskara Rao, K Santhakumar
The investigation was conducted to analyse the bioactive compounds from the leaf extracts of L. speciosa by GC-MS. The extracts were screened for antibacterial and antibiofilm activities against potential clinical strains. The bioactive compounds from the leaves of L. speciosa were extracted by soxhlet continuous extraction method and their chemical composition was analysed by Gas Chromatography-Mass Spectroscopy (GC-MS). The antibacterial activity was evaluated against clinical strain like Staphylococcus aureus, Escherichia coli, P...
March 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28314181/photocatalytic-degradation-effect-of-malachite-green-and-catalytic-hydrogenation-by-uv-illuminated-ceo2-cdo-multilayered-nanoplatelet-arrays-investigation-of-antifungal-and-antimicrobial-activities
#3
C Maria Magdalane, K Kaviyarasu, J Judith Vijaya, C Jayakumar, M Maaza, B Jeyaraj
CeO2/CdO multi-layered nanoplatelet arrays have been synthesized by sol-gel method at two different temperatures using Citrus limonum fruit extract and the effect of particle size on the photocatalytic performance is studied. The particle size and phases was analysed by X-ray diffraction pattern (XRD) which brought out the formation of cubic phase in the synthesized samples. Field Emission Scanning electron microscopy (FESEM) revealed the surface morphology and made up of cumulative form of platelet shaped arrays with an average size of 10nm...
March 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28314180/tetra-2-3-pyrazinoporphyrazines-with-externally-appended-pyridine-rings-17-photosensitizing-properties-and-cellular-effects-of-zn-ii-octacationic-and-zn-ii-pt-ii-hexacationic-macrocycles-in-aqueous-media-perspectives-of-multimodal-anticancer-potentialities
#4
Elisa Viola, Maria Pia Donzello, Fabiola Sciscione, Kous Shah, Claudio Ercolani, Giuseppe Trigiante
The photosensitizing activity of two multiply charged porphyrazine derivatives, i.e. the Zn(II) species [(CH3)8LZn](8+) and the Zn(II)/Pt(II) heterobimetallic complex [(PtCl2)(CH3)6LZn](6+) (neutralized byI(-) ions; L=tetrakis-2,3-[5,6-di(2-pyridyl)pyrazino]porphyrazinato dianion) has been examined in the water medium in the presence of SDS under experimental conditions in which the two species are present exclusively in their monomeric form. The determined quantum yield values (ΦΔ) for both complexes, of interest in photodynamic therapy (PDT), are 2...
March 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28297682/degradation-of-organic-pollutants-by-bio-inspired-rectangular-and-hexagonal-titanium-dioxide-nanostructures
#5
T V M Sreekanth, Jae-Jin Shim, Yong Rok Lee
Dyes are used in textile, printing, leather, pharmaceutical, food and cosmetic industries. Dyes add color and pattern to materials. The presence of even very low concentration of dyes/dyes degradation products in effluent is highly toxic to humans and aquatic organisms. It is important to remove these dye degradation pollutants from the industrial effluents before their disposal. In recent years nanoparticles have been used for the removal of dyes from industrial waste water. Titanium dioxide nanostructures (TiO2 NS) were synthesized via a one-step facile green process...
March 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28319867/phototherapeutic-spectrum-expansion-through-synergistic-effect-of-mesoporous-silica-trio-nanohybrids-against-antibiotic-resistant-gram-negative-bacterium
#6
Yaswanth Kuthati, Ranjith Kumar Kankala, Prabhakar Busa, Shi-Xiang Lin, Jin-Pei Deng, Chung-Yuan Mou, Chia-Hung Lee
The extensive impact of antibiotic resistance has led to the exploration of new anti-bacterial modalities. We designed copper impregnated mesoporous silica nanoparticles (Cu-MSN) with immobilizing silver nanoparticles (SNPs) to apply photodynamic inactivation (PDI) of antibiotic-resistant E. coli. SNPs were decorated over the Cu-MSN surfaces by coordination of silver ions on diamine-functionalized Cu-MSN and further reduced to silver nanoparticles with formalin. We demonstrate that silver is capable of sensitizing the gram-negative bacteria E...
March 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28292696/influence-of-low-level-laser-therapy-on-the-healing-of-human-bone-maxillofacial-defects-a-systematic-review
#7
Carolina Dos Santos Santinoni, Hiskell Francine Fernandes Oliveira, Victor Eduardo de Souza Batista, Cleidiel Aparecido Araujo Lemos, Fellippo Ramos Verri
PURPOSE: This systematic review evaluates the effectiveness of low-level laser therapy (LLLT) to enhance maxillofacial area bone repair. METHODS: A comprehensive search of studies published up to February 2017 and listed in PubMed/MEDLINE, Scopus, and Cochrane Library databases was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. RESULTS: The 15 selected studies evaluated a total of 374 patients (mean age, 28...
March 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28282557/the-effect-of-combined-photobiomodulation-and-metformin-on-open-skin-wound-healing-in-a-non-genetic-model-of-type-ii-diabetes
#8
Mohammadali Asghari, Ali Kanonisabet, Mandanad Safakhah, Zahra Azimzadeh, Ataroalsadat Mostafavinia, Abdollah Amini, Seyed Kamran Ghorishi, Reza JalaliFiroozkohi, Sahar Bayat, Mohammad Bayat
This study intended to examine the combined influences of photobiomodulation (PBM) and metformin on the microbial flora and biomechanical parameters of wounds in a non-genetic model of type II diabetes mellitus (TII DM). We induced a non-genetic model of TII DM in 20 rats by feeding them a 10% fructose solution for 2weeks followed by an injection of streptozotocin (STZ, 40mg/kg). After 21days from the injection of STZ, we induced one full-thickness skin wound in each of the diabetic rats. We randomly divided the rats into four groups: i) placebo; ii) pulsed wave laser (890nm, 80Hz, 0...
March 6, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28319868/synthesis-characterization-of-amide-substituted-dexibuprofen-derivatives-and-their-spectral-voltammetric-and-docking-investigations-for-dna-binding-interactions
#9
Nasima Arshad, Muhammad Zafran, Zaman Ashraf, Fouzia Perveen
Three amide derivatives - methyl-2-[2-(4-isobutylphenyl)propanamido]propanoate (Dex-2), methyl 2-[2-(4-isobutylphenyl) propanamido]-3-phenylpropanoate (Dex-3) and methyl 2-[2-(4-isobutylphenyl)-propanamido]-4-methylpentanoate (Dex-4) of dexibuprofen (Dex-1) 2-(4-isobutylphenyl)propanoic acid were synthesized and conformed for structures by physical data and spectral analysis. Further, all the compounds were studied for their binding with ds.DNA through experimental (UV-visible/and fluorescence spectroscopy, cyclic voltammetry) and theoretical (molecular docking) techniques...
March 3, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28282558/efficacy-of-scaling-and-root-planning-with-and-without-adjunct-nd-yag-laser-therapy-on-clinical-periodontal-parameters-and-gingival-crevicular-fluid-interleukin-1-beta-and-tumor-necrosis-factor-alpha-levels-among-patients-with-periodontal-disease-a-prospective
#10
Tariq Abduljabbar, Fahim Vohra, Sergio Varela Kellesarian, Fawad Javed
BACKGROUND AND AIM: Limited evidence exists regarding the role of scaling and root planning (SRP) with adjunct neodymium yttrium aluminum garnet (Nd:YAG) laser therapy in reducing periodontal parameters (plaque index [PI], bleeding on probing [BOP] and probing pocket depth [PPD]) and levels of proinflammatory cytokines in the gingival crevicular fluid (GCF) among patients with periodontal disease (PD). The aim was to assess the effect of SRP with and without adjunct Nd:YAG laser therapy on clinical periodontal parameters and GCF interleukin 1-beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) levels among patients with PD...
March 3, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28273504/photocatalytic-activity-against-azo-dye-and-cytotoxicity-on-mcf-7-cell-lines-of-zirconium-oxide-nanoparticle-mediated-using-leaves-of-lagerstroemia-speciosa
#11
V Sai Saraswathi, K Santhakumar
Metal oxide nanoparticles are gaining interest in recent years. The present paper explains about the green synthesis of zirconium oxide nanoparticles (ZrO NPs) mediated from the leaves of Lagerstroemia speciosa. The prepared ZrO NPs were characterized by UV-vis spectroscopy, FT-IR, X-ray diffraction analysis (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX) and Thermogravimetric Analysis (TGA). The photocatalytic activity of ZrO NPs was studied for azo dye by exposing to sunlight...
March 3, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28282556/mechanisms-involved-in-the-possible-nephroprotective-effect-of-rutin-and-low-dose-%C3%AE-irradiation-against-cisplatin-induced-nephropathy-in-rats
#12
Rasha R Radwan, Salma M Abdel Fattah
Cisplatin has demonstrated high antitumor efficacy. However, nephrotoxicity is a dose-limiting factor in its clinical use. The present study was designed to investigate the protective effect of rutin and low dose of irradiation (LDR) on cisplatin-induced nephrotoxicity in rats. Rats received rutin (200mg/kg/day, p.o) for 10 consecutive days and subjected to LDR (0.5Gy) 1day prior to cisplatin. Intraperitoneal administration of single dose of cisplatin (7.5mg/kg) was used to induce nephrotoxicity. Data showed that cisplatin caused elevation in serum creatinine and urea, disturbance in blood count, elevation in gene expression of tumor necrosis factor alpha, nuclear factor kappa B, interleukin-1β, caspase-3, mitochondrial cytochrome C and apoptosis-inducing factor in renal tissue...
March 2, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28273503/resistance-of-arabidopsis-thaliana-l-photosynthetic-apparatus-to-uv-b-is-reduced-by-deficit-of-phytochromes-b-and-a
#13
Aleksandra Yu Khudyakova, Vladimir D Kreslavski, Galina N Shirshikova, Sergey K Zharmukhamedov, Anatoly A Kosobryukhov, Suleyman I Allakhverdiev
The photosynthetic responses of 25-day-old Arabidopsis phyA phyB double mutant (DM) compared with the wild type (WT) to UV-B radiation (1Wm(-2), 30min) were investigated. UV-B irradiation led to reduction of photosystem 2 (PS-2) activity and the photosynthetic rate. In plants grown under both white and red light (λm - 660nm) the reduction was greater in DM plants compared to the WT. Without UV-B irradiation a decrease in PS-2 activity was observed in DM grown under RL only. It is assumed that the lower content of UV-absorbing pigments and carotenoids observed in DM may be one of the reasons of reduced PS-2 resistance to UV-B...
March 1, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28264787/low-level-laser-therapy-modulates-viability-alkaline-phosphatase-and-matrix-metalloproteinase-2-activities-of-osteoblasts
#14
Flávia Amadeu de Oliveira, Adriana Arruda Matos, Sandra Satiko Matsuda, Marília Afonso Rabelo Buzalaf, Vanderley Salvador Bagnato, Maria Aparecida de Andrade Moreira Machado, Carla Andreotti Damante, Rodrigo Cardoso de Oliveira, Camila Peres-Buzalaf
Low level laser therapy (LLLT) has been shown to stimulate bone cell metabolism but their impact on the matrix metalloproteinase (MMP) expression and activity is little explored. This study evaluated the influence of LLLT at two different wavelengths, red and infrared, on MC3T3-E1 preosteoblast viability, alkaline phosphatase (ALP) and MMP-2 and -9 activities. To accomplish this, MC3T3-E1 cells were irradiated with a punctual application of either red (660nm; InGaAIP active medium) or infrared (780nm; GaAlAs active medium) lasers both at a potency of 20mW, energy dose of 0...
February 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28258044/study-on-the-interaction-of-anthracenyl-methyl-homospermidine-conjugate-antmhspd-with-dna-by-spectroscopic-methods
#15
Zhiyong Tian, Luyao Zhao, Huanyang Dong, Yan Zhang, Yijuan Zhang, Qianlei Ren, Shuangyu Shao, Yingying Huang, Lina Song, Tao Guo, Xuejun Xu, Chaojie Wang
The interaction between anthracenyl-methyl homospermidine conjugate (ANTMHspd) with herring sperm DNA was investigated by UV/vis absorption, fluorescent spectra, circular dichroism (CD) spectroscopy and (1)HNMR under physiological conditions (pH=7.4). The observed hypochromism effect and fluorescence quenching of ANTMHspd by DNA, and the displacement of EB from DNA-EB system by ANTMHspd suggested that ANTMHspd might interact with DNA by the combined mode of intercalation and groove binding. Further fluorescent tests at different temperatures revealed that the quenching mechanism was a static type...
February 27, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28254569/synthesis-and-characterization-of-core-shell-bimetallic-nanoparticles-for-synergistic-antimicrobial-effect-studies-in-combination-with-doxycycline-on-burn-specific-pathogens
#16
Ali Fakhri, Shiva Tahami, Mahsa Naji
Nano-medicine is a breakthrough discovery in the healthcare sector. Doxycycline is a new generation antibiotic which is proved to be a boon in the treatment of patients with complicated skin infections. We have tried to explore the benefits of synthesized bimetallic silver-gold nanoparticles in combination with new generation antibiotic for burn infections. The bimetallic nanoparticles synthesized by core-shell method were characterized using scanning electron microscopy equipped with an energy dispersive spectrometer, transmission electron microscopy, X-ray diffraction and UV-Vis spectroscopy...
February 27, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28314182/biosynthesis-of-polyphenol-stabilised-nanoparticles-and-assessment-of-anti-diabetic-activity
#17
Yuanyuan Li, Jiaqiang Zhang, Jiangning Gu, Shi Chen, Chen Wang, Weiping Jia
Green synthesis of nanoparticles (NPs) is a major developing field. In this study, we utilised Whitania somnifera leaves as a green source to synthesise platinum (Pt) NPs. Synthesised Pt NPs resulted from controlled synthesis of 12nm spherical particles. The synthesised Pt NPs were subjected to anti-diabetic applications resulting in a significant decrease in plasma glucose levels after injecting the Pt NPs into streptozotocin-induced diabetic rats.
February 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28288401/biosynthesis-and-computational-analysis-of-amine-ended-dual-thiol-ligand-functionalized-gold-nanoparticles-for-conventional-spectroscopy-detection-of-melamine
#18
K Anand, Thishana Singh, G Madhumitha, A Phulukdaree, Robert M Gengan, A A Chuturgoon
The bio-synthesized DTAuNPs have an average size of 21nm. The aggregation extent depends on the concentration of melamine, which was validated by UV-vis spectra and visual method of melamine detection was developed. The major observation in this method was the color change of DTAuNPs from red to purple due to the aggregation of ligand capped gold nanoparticles instigated by melamine. The reaction of color changes were processed due to the shifting of bonding in hydrogen in between nanoparticles and melamine...
February 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28254568/extra-hypothalamic-brain-clocks-in-songbirds-photoperiodic-state-dependent-clock-gene-oscillations-in-night-migratory-blackheaded-buntings-emberiza-melanocephala
#19
Devraj Singh, Vinod Kumar
The avian circadian pacemaker system is comprised of independent clocks in the retina, pineal and hypothalamus, as shown by daily and circadian oscillations of core clock genes (Per2, Cry1, Bmal1 and Clock) in several birds including migratory blackheaded buntings (Emberiza melanocephala). This study investigated the extra-hypothalamic brain circadian clocks in blackheaded buntings, and measured Per2, Cry1, Cry2, Bmal1 and Clock mRNA expressions at 4h intervals over 24h beginning 1h after light-on in the left and right telencephalon, optic tectum and cerebellum, the brain regions involved in several physiological and cognitive functions...
February 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28246055/aggregation-of-trypsin-and-trypsin-inhibitor-by-al-cation
#20
P Chanphai, L Kreplak, H A Tajmir-Riahi
Al cation may trigger protein structural changes such as aggregation and fibrillation, causing neurodegenerative diseases. We report the effect of Al cation on the solution structures of trypsin (try) and trypsin inhibitor (tryi), using thermodynamic analysis, UV-Visible, Fourier transform infrared (FTIR) spectroscopic methods and atomic force microscopy (AFM). Thermodynamic parameters showed Al-protein bindings occur via H-bonding and van der Waals contacts for trypsin and trypsin inhibitor. AFM showed that Al cations are able to force trypsin into larger or more robust aggregates than trypsin inhibitor, with trypsin 5±1 SE (n=52) proteins per aggregate and for trypsin inhibitor 8...
February 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
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