Looking beyond the skin: Cutaneous and systemic oxidative stress in UVB-induced squamous cell carcinoma in hairless mice
Publication date: Available online 16 April 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Iriana Moratto Carrara, Gabriella Pasqual Melo, Sara Santos Bernardes, Fernando Souza Neto, Leandra Naira Zambelli Ramalho, Poliana Camila Marinello, Rodrigo Cabral Luiz, Rubens Cecchini, Alessandra Lourenço CecchiniAbstractCumulative ultraviolet (UV) exposure is associated with squamous skin cell carcinoma. UV radiation induces oxidative modifications in biomolecules of the skin leading to photocarcinogenesis. Indeed, the cyclobutene pyrimidine dimers and other dimers formed by photoaddition betwe...
Source: Journal of Photochemistry and Photobiology B: Biology - April 17, 2019 Category: Speech-Language Pathology Source Type: research

An experimental study on riboflavin photosensitization treatment for inactivation of circulating HCT116 tumor cells
Publication date: Available online 16 April 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Yang Yu, Lu Yang, Chunyu He, Shengfei Tai, Liguo Zhu, Chunya Ma, Tianxin Yang, Fu Cheng, Xiaolin Sun, Ruoshuai Cui, Shufang Wang, Deqing WangAbstractSurgical resection is one of the most common radical treatments for cancers. However, tumors may be compressed or the local intravascular pressure may be increased during surgical manipulation, causing the shedding and entry of tumor cells into the blood circulation and hence distant recurrence and metastasis of tumors. We have preliminarily established a met...
Source: Journal of Photochemistry and Photobiology B: Biology - April 16, 2019 Category: Speech-Language Pathology Source Type: research

Environmental friendly synthesis of TiO2-ZnO nanocomposite catalyst and silver nanomaterials for the enhanced production of biodiesel from Ulva lactuca seaweed and potential antimicrobial properties against the microbial pathogens
In this study, biodiesel was produced from Ulva lactuca seaweeds using TiO2–ZnO nanocomposite catalysts with particle size of ~12 nm. The size controlled TiO2–ZnO nanocomposite was characterized by powder XRD analysis and TEM. The result of that TiO2–ZnO catalyst is a promising catalyst for the production of biodiesel under mild reaction conditions and high yield of hydroxydecanoic acid conversion of 82.8%. The various conditions optimized for the higher conversion to FAME (15.8 ml of FAME) were 4 wt% catalysts at 4 h under 60 °C and further there is no increase of conversion to FAME above 6...
Source: Journal of Photochemistry and Photobiology B: Biology - April 14, 2019 Category: Speech-Language Pathology Source Type: research

Blue-fluorescent and biocompatible carbon dots derived from abundant low-quality coals
Publication date: Available online 10 April 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Tonkeswar Das, Binoy K. Saikia, H.P. Dekaboruah, Manobjyoti Bordoloi, Dipankar Neog, Jayanta J. Bora, Jiumoni Lahkar, Bardwi Narzary, Sonali Roy, Danaboyina RamaiahAbstractCoal is one of the most abundant natural carbonaceous materials. This paper reports a novel oxidative chemical method for the synthesis of high-value carbon dots (CDs) from cheap and abundant low-quality high‑sulfur coals for use in high-end applications. These CDs were synthesized by using wet-chemical ultrasonic stimulation-induced ...
Source: Journal of Photochemistry and Photobiology B: Biology - April 11, 2019 Category: Speech-Language Pathology Source Type: research

Photobiomodulation associated to cellular therapy improve wound healing of experimental full thickness burn wounds in rats
In conclusion PBM promotes a synergistic outcome with SVF therapy with a dose dependent effect potentializing wound healing of experimental full thickness burns in rats through amplification of early inflammatory response, enhanced angiogenesis, fibroblast content, accentuated wound contraction and collagen concentration. (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - April 10, 2019 Category: Speech-Language Pathology Source Type: research

Atractyligenin, a terpenoid isolated from coffee silverskin, inhibits cutaneous photoaging
Publication date: Available online 4 April 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Song Hua Xuan, Nam Ho Lee, Soo Nam ParkAbstractUltraviolet (UV) light exposure-induced photoaging of the skin is a multifactorial process involving both extrinsic and intrinsic cellular mechanisms. Several naturally occurring products are known to confer protection against UV light-induced skin damage. Our preliminary studies confirmed that the ethyl acetate fraction of coffee silverskin exhibits inhibitory effects on matrix metalloproteases (MMPs). Furthermore, we previously isolated and identified atract...
Source: Journal of Photochemistry and Photobiology B: Biology - April 5, 2019 Category: Speech-Language Pathology Source Type: research

Cucurbita pepo leaf extract induced synthesis of zinc oxide nanoparticles, characterization for the treatment of femoral fracture
In conclusion, these cell experimental results confirmed that the fabricated ZnO NPs are an important substitute for osteoporotic and bone tissue formation.Graphical Abstract (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - April 3, 2019 Category: Speech-Language Pathology Source Type: research

Effects of photobiomodulation therapy on the extracellular matrix of human dental pulp cell sheets
ConclusionPBMT influence the composition and ultrastructure of the ECM of CSs of hDPSCs. Thus, PBMT, specifically when applied in the lower energy density, could be of importance in the determination of the mechanical quality of CSs, which may favor cell therapy by improving the CS transplantation approach.Graphical Abstract (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - April 2, 2019 Category: Speech-Language Pathology Source Type: research

Fabrication of antimicrobial curcumin stabilized platinum nanoparticles and their anti-liver fibrosis activity for potential use in nursing care
In this study, Platinum and curcumin were conjugated to direct curcumin into the liver. Curcumin platinum nanoparticles (C-PtNPs) were formed by changing curcumin concentration at pH 10. The successful formation of C-PtNPs was recognized with the help of Fourier transform infrared (FTIR) and UV–visible spectrophotometers. The particle size and morphology were studied with the help of dynamic light scattering (DLS) and High-resolution transmission electron microscopy (HR-TEM) respectively. The antimicrobial activity of C-PtNPs, was examined against gram positive and gram negative bacteria. Moreover, the NIH/3 T3 c...
Source: Journal of Photochemistry and Photobiology B: Biology - March 31, 2019 Category: Speech-Language Pathology Source Type: research

Exploring the potential of environment friendly silver nanoparticles for DNA interaction: Physicochemical approach
Publication date: Available online 30 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Komal Sonia, Shrikant Kukreti, Mahima KaushikAbstractNanosilver, being the most prominent nanoproduct has diverse bio-medical applications and hence the effects associated with their exposure need to be investigated in detail. The interaction of metal nanoparticles with DNA has become a matter of interest, as their effect on structural integrity, synthesis and replication could be explored through it. Present work aims at the facile synthesis and characterization of spherical silver nanoparticles (AgNPs) ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 30, 2019 Category: Speech-Language Pathology Source Type: research

Bio-engineering and cellular imaging of silver nanoparticles as weaponry against multidrug resistant human pathogens
Publication date: Available online 28 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Lakshmipathy Muthukrishnan, Chellappa Muralidharan, Anima NandaAbstract‘Go green’ has also been implied to nanotechnology by harbouring eco-benign principle for a cleaner production of silver nanoparticles (AgNPs). This was achieved using a nitrate reducing Bacillus subtilis L1 (KT266579.1) inhabiting rhizosphere soil under optimized laboratory conditions, highlighting on its antibacterial modus operandi. Nano-characteristics and antimicrobial mechanism were investigated using spectroscopic an...
Source: Journal of Photochemistry and Photobiology B: Biology - March 30, 2019 Category: Speech-Language Pathology Source Type: research

Effect of dose responses of hydrophilic aluminium (III) phthalocyanine chloride tetrasulphonate based photosensitizer on lung cancer cells
In this study, we explored the photochemical properties of AlPcS4Cl, its uptake into lung cancer, the intracellular localization and photodynamic action on lung cancer (A549 cells). Results indicated that AlPcS4Cl is a stable PS that localizes in intracellular organelles including the mitochondrion and lysosomes. PDT using AlPcS4Cl indicated an increase in cell death and decrease in cell proliferation and viability. AlPcS4Cl showed to be effective in treating lung cancer in vitro, however the resulting PDT efficacy will finally depend on the biological features such as tumour vasculature and tumour specific accumulation wh...
Source: Journal of Photochemistry and Photobiology B: Biology - March 30, 2019 Category: Speech-Language Pathology Source Type: research

Altered metabolic and hormonal responses in male rats exposed to acute bright light-at-night associated with global DNA hypo-methylation
Publication date: Available online 28 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Yonis Mohamad, Haim Abraham, Zubidat A. ElsalamAbstractThe association between light pollution and disruption of daily rhythms, metabolic and hormonal disorders, as well as cancer progression is well-recognized. These adverse effects could be due to nocturnal melatonin suppression. The signaling pathway by which light pollution affects metabolism and endocrine responses is unclear. We studied the effects of artificial light at night (ALAN1) on body mass, food and water intake, daily rhythms of body temper...
Source: Journal of Photochemistry and Photobiology B: Biology - March 30, 2019 Category: Speech-Language Pathology Source Type: research

Preparation, and structural of new NiS-SiO2 and Cr2S3-TiO2 nano-catalyst: Photocatalytic and antimicrobial studies
Publication date: Available online 27 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Mojgan Hosseini, Nafiseh Fazelian, Ali Fakhri, Hesam Kamyab, Krishna Kumar Yadav, Shreeshivadasan ChelliapanAbstractNiS-SiO2 and Cr2S3-TiO2 synthesized by Ultrasound–Microwave method was tested for the photo-degradation of methyl red as azo dye under ultraviolet (UV) light. The structure and morphology of the synthesized materials were examined through scanning electron microscopy, X-ray diffraction and photoelectron spectroscopy, energy-dispersive spectroscopy, dynamic light scattering and the band...
Source: Journal of Photochemistry and Photobiology B: Biology - March 28, 2019 Category: Speech-Language Pathology Source Type: research

Quantum dots-based fluoroimmunoassay for anti-Zika virus IgG antibodies detection
Publication date: Available online 27 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Jéssika F.F. Ribeiro, Maria I.A. Pereira, Lara G. Assis, Paulo E. Cabral Filho, Beate S. Santos, Giovannia A.L. Pereira, Claudilene R. Chaves, Gubio S. Campos, Sílvia I. Sardi, Goreti Pereira, Adriana FontesAbstractZika virus (ZIKV) has been declared a public health emergency of international concern. ZIKV has been associated with some neurological disorders, and their long-term effects are not completely understood. The majority of the methods for ZIKV diagnosis are based on the detection o...
Source: Journal of Photochemistry and Photobiology B: Biology - March 28, 2019 Category: Speech-Language Pathology Source Type: research

5-aminolevulinic acid photodynamic therapy reduces HPV viral load via autophagy and apoptosis by modulating Ras/Raf/MEK/ERK and PI3K/AKT pathways in HeLa cells
Publication date: Available online 21 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Jiajia Xie, Sijia Wang, Zhijia Li, Chunping Ao, Jingying Wang, Li Wang, Xiaoming Peng, Kang ZengAbstractHuman papillomavirus (HPV) infection is linked to several diseases, the most prominent of which are cervical cancer and genital condyloma acuminatum. Previous studies have suggested an effective role for 5-aminolevulinic acid photodynamic therapy (ALA-PDT) against various cancers by the induction of autophagy and apoptosis. However, few reports have focused on the effectiveness of ALA-PDT on HPV related...
Source: Journal of Photochemistry and Photobiology B: Biology - March 22, 2019 Category: Speech-Language Pathology Source Type: research

NIR absorbing reduced graphene oxide for photothermal radiotherapy for treatment of esophageal cancer
In this study, we established a facile technique, plant extract-based technique for the synthesis of reduced nano-graphene oxide (RNGO) with low cytotoxicity. We formed platforms of photothermal (PT) therapy and further explained that the synthesized RNGO can be utilized as ready to use PT therapy without any additional surface adjustment. In the meantime, with the help of a constant-wave NIR laser (near-infrared), in vitro esophageal adenocarcinoma cell line (OE-19) cancer cells were effectively ablated, because of the PT impact of RNGO. The outcomes propose that the RNGO was appropriate for PT therapy and photoacoustic i...
Source: Journal of Photochemistry and Photobiology B: Biology - March 22, 2019 Category: Speech-Language Pathology Source Type: research

Photobiomodulation enhancement of cell proliferation at 660 nm does not require cytochrome c oxidase
Publication date: Available online 22 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Paula L.V. Lima, Claudia V. Pereira, Nadee Nissanka, Tania Arguello, Giulio Gavini, Carlos Magno da Costa Maranduba, Francisca Diaz, Carlos T. MoraesAbstractPhotobiomodulation (PBM) therapy is based on the use of specific light parameters to promote tissue repair. Although demonstrated in different cell models and tissues, the mechanism by which photobiomodulation operates is not well understood. Previous studies suggested that the cell proliferation enhancement triggered by red and near-infrared PBM invo...
Source: Journal of Photochemistry and Photobiology B: Biology - March 22, 2019 Category: Speech-Language Pathology Source Type: research

Synthesis of Nomega-Nitro-l-arginine methyl ester modified reduced graphene oxide nanosheets and their protective action on experimental preeclampsia in mice
Publication date: Available online 22 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Shi-Fen Lu, Qing-Fang Lin, Ying Li, Xiao-Juan JiangAbstractThe purpose of this study is to synthesize Nomega-Nitro-L-arginine methyl ester (L-NAME) adsorbed reduced graphene oxide (RGO) sheets and demonstrate their protective impact on the detrimental effect detected in investigational pre-eclampsia, a prerequisite where increase in oxidative stress and decreased Nitric Oxide (NO) production were present. The synthesized graphene sheets were studies by using various characterization techniques. Later, a p...
Source: Journal of Photochemistry and Photobiology B: Biology - March 22, 2019 Category: Speech-Language Pathology Source Type: research

Highly photoluminescent N, P doped carbon quantum dots as a fluorescent sensor for the detection of dopamine and temperature
Publication date: Available online 20 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Sai Kumar Tammina, Dezhi Yang, Sivasankar Koppala, Chunsheng Cheng, Yaling YangAbstractIn recent times, fluorescent carbon quantum dots (CQDs) as an optical sensor have attained massive attention owing to their excellent optical properties. In current investigation, our group presented an easy and economical methodology to synthesize the nitrogen and phosphorous doped carbon quantum dots (N, P doped CQDs) for sensing dopamine (DA) and temperature in aqueous medium. The synthesized CQDs were characterized ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 21, 2019 Category: Speech-Language Pathology Source Type: research

Apigenin restores impairment of autophagy and downregulation of unfolded protein response regulatory proteins in keratinocytes exposed to ultraviolet B radiation
In this study, by lactate dehydrogenase (LDH) release assay, we found that apigenin treatment increased cell death in the primary human epidermal keratinocytes (HEKs) and the cutaneous squamous cell carcinoma cell line COLO-16. Apigenin treatment reduced microtubule-associated protein 1 light chain 3 (LC3)-II turnover, acridine orange staining and GFP-LC3 puncta in both cell types, suggesting autophagy inhibition. However, apigenin treatment restored the inhibition of autophagy in UVB-challenged HEKs. Moreover, apigenin treatment restored the UVB-induced downregulation of ataxia-telangiectasia mutated (ATM), ataxia-telangi...
Source: Journal of Photochemistry and Photobiology B: Biology - March 21, 2019 Category: Speech-Language Pathology Source Type: research

Mechanism of coralyne-mediated DNA photo-nicking process
Publication date: Available online 21 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Birija Sankar Patro, Rahul Bhattacharyya, Pooja Gupta, Sandip Bandyopadhyay, Subrata ChattopadhyayAbstractPreviously, we reported that coralyne and UVA combination sensitized a wide range of human carcinoma cells regardless of their p53 status. The coralyne induced photosensitization of cancer cells may be clinically attractive, as mutation in the p53 gene is prevalent in many types of tumors. Coralyne mediated photosensitization of cancer cells is attributable to its ability to cause extensive DNA single...
Source: Journal of Photochemistry and Photobiology B: Biology - March 21, 2019 Category: Speech-Language Pathology Source Type: research

Editorial Board
Publication date: April 2019Source: Journal of Photochemistry and Photobiology B: Biology, Volume 193Author(s): (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - March 21, 2019 Category: Speech-Language Pathology Source Type: research

Critical light-related gene expression varies in two different strains of the dinoflagellate Karlodinium veneficum in response to the light spectrum and light intensity
In this study, intraspecific differences in genetic regulatory mechanisms in response to varied light intensities and qualities were comparatively researched on two different strains isolated from coastal areas of the East China Sea, namely, GM2 and GM3. In GM2, the expression of genes in the Calvin cycle, namely, rbcL and SBPase, and a light-related gene that correlated with cellular motility, rhodopsin, were significantly inhibited under high light intensities. Thus, this strain was adapted to low light. In contrast, the gene expression levels were promoted by high light conditions in GM3. These upregulated genes in the ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 18, 2019 Category: Speech-Language Pathology Source Type: research

Blue photosensitizers for aPDT eliminate Aggregatibacter actinomycetemcomitans in the absence of light: An in vitro study
Publication date: Available online 14 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Luisa Andrade Valle, Marcelo Milanda Ribeiro Lopes, Mariana Schutzer Ragghianti Zangrando, Adriana Campos Passanezi Sant'Ana, Sebastião Luiz Aguiar Greghi, Maria Lúcia Rubo de Rezende, Carla Andreotti DamanteAbstractThe main treatment of periodontal disease is the mechanical removal of supra and subgingival biofilm. Adjuvant therapies as antimicrobial photodynamic therapy (aPDT) may offer improved clinical and microbiological results. The aim of this in vitro study was to evaluate the effect...
Source: Journal of Photochemistry and Photobiology B: Biology - March 15, 2019 Category: Speech-Language Pathology Source Type: research

FADD-deficient mouse embryonic fibroblasts undergo RIPK1-dependent apoptosis and autophagy after NB-UVB irradiation
Publication date: Available online 14 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Maja Antunovic, Igor Matic, Biserka Nagy, Katarina Caput Mihalic, Josipa Skelin, Jerko Stambuk, Pavle Josipovic, Tamara Dzinic, Mladen Paradzik, Inga MarijanovicAbstractSun or therapy-related ultraviolet B (UVB) irradiation induces different cell death modalities such as apoptosis, necrosis/necroptosis and autophagy. Understanding of mechanisms implicated in regulation and execution of cell death program is imperative for prevention and treatment of skin diseases. An essential component of death-inducing ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 15, 2019 Category: Speech-Language Pathology Source Type: research

Self-assembly of chlorin-e6 on γ-Fe2O3 nanoparticles: Application for larvicidal activity against Aedes aegypti
Publication date: Available online 13 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Massimiliano Magro, Simone Bramuzzo, Davide Baratella, Juri Ugolotti, Giorgio Zoppellaro, Giulia Chemello, Ike Olivotto, Cristina Ballarin, Giuseppe Radaelli, Beatrice Arcaro, Marco De Liguoro, Olimpia Coppellotti, Laura Guidolin, Jessica de Almeida Roger, Emanuela Bonaiuto, Radek Zboril, Fabio VianelloAbstractAedes aegypti mosquitos are widespread vectors of several diseases and their control is of primary importance for biological and environmental reasons, and novel safe insecticides are highly desirab...
Source: Journal of Photochemistry and Photobiology B: Biology - March 14, 2019 Category: Speech-Language Pathology Source Type: research

Photobiomodulation can improve ovarian activity in polycystic ovary syndrome-induced rats
In this study, we include endocrine and reproductive features in a rat model for PCOS and the effects of PBM on ovarian activities. Forty-five adult female Wistar rats PCOS-induced by a single dose of the estradiol valerate (EV) were used in the study. After the EV injection for PCO induction, rats were divided into 9 groups (n = 5/group) named C30, C45 and C60 (Control group), S30, S45 and S60 (PCO group) and L30, L45 and L60 (PCO/Laser group). The rats were irradiated with laser 3 times/week. The results shown that EV PCO-induced rats had increased body mass, reduced ovary mass, and reduced GSI. The plasma levels of ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 13, 2019 Category: Speech-Language Pathology Source Type: research

Photoprotection assessment of olive (Olea europaea L.) leaves extract standardized to oleuropein: In vitro and in silico approach for improved sunscreens
This study was designed to investigate the photoprotective potential of olive leaves extract standardized for oleuropein performing a set of in vitro and in silico tools as an innovative approach, highlighting yeast assays, in vitro Sun Protection Factor (SPF) and molecular modelling studies of UV absorption. This study supports the use of olive leaves extract for photoprotection, as an effective photoprotective, anti-mutagenic and antioxidant active, also showing a synergistic effect in association with UV filters with an improvement on in vitro SPF of sunscreen formulations.Graphical Abstract (Source: Journal of Photoche...
Source: Journal of Photochemistry and Photobiology B: Biology - March 13, 2019 Category: Speech-Language Pathology Source Type: research

The remediation of drought stress under VAM inoculation through proline chemical transformation action
This article discussed the enhanced drought tolerance under arbuscular mycorrhizal (AM) inoculation and normal growth of plants which linked with the activity of photoreceptors. The photoreceptor action in dual symbiosis under drought stress showed not only the high photosynthetic activity but also provide information about the broad range of physiological responses. The pot experiment conducted in a natural environment where drought condition was observed twice a week via regular irrigation with water up to twelve months. Plants analysis showed the high contents of water, hydrogen peroxide, carotenoids, proline, antioxida...
Source: Journal of Photochemistry and Photobiology B: Biology - March 12, 2019 Category: Speech-Language Pathology Source Type: research

Feasible production of biomass and natural antioxidants through callus cultures in response to varying light intensities in olive (Olea europaea. L) cult. Arbosana
Publication date: Available online 3 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Sher Mohammad, Mubarak Ali Khan, Amir Ali, Latif Khan, Muhammad Shahsawar Khan, Zia-ur-Rehman MashwaniAbstractLight is the most important physical factor in growth and development of plants. Light intensity is directly proportional to the growth and accumulation of natural antioxidants during in vitro cultures of various medicinal plants. The present research study was designed to determine the effect of different light intensities i.e. normal light (2000–2500 lx), diffused light (500–1000 ...
Source: Journal of Photochemistry and Photobiology B: Biology - March 4, 2019 Category: Speech-Language Pathology Source Type: research

Staphylococcus aureus resists UVA at low irradiance but succumbs in the presence of TiO2 photocatalytic coatings
Publication date: Available online 1 March 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Andrea Clemente, Jeremy J. Ramsden, Alec Wright, Felipe Iza, Julie A. Morrissey, Gianluca Li Puma, Danish J. MalikAbstractThe aim of this study was to evaluate the bactericidal effect of reactive oxygen species (ROS) generated upon irradiation of photocatalytic TiO2 surface coatings using low levels of UVA and the consequent killing of Staphylococcus aureus. The role of intracellular enzymes catalase and superoxide dismutase in protecting the bacteria was investigated using mutant strains. Differences were...
Source: Journal of Photochemistry and Photobiology B: Biology - March 1, 2019 Category: Speech-Language Pathology Source Type: research

Environmental friendly synthesis of TiO2-ZnO nanocomposite catalyst and silver nanomaterilas for the enhanced the production of biodiesel from Ulva lactuca seaweed and potential antimicrobial properties against the microbial pathogens
In this study, biodiesel was produced from Ulva lactuca seaweeds using TiO2–ZnO nanocomposite catalysts with particle size of ~12 nm. The size controlled TiO2–ZnO nanocomposite was characterized by powder XRD analysis and TEM. The result of that TiO2–ZnO catalyst is a promising catalyst for the production of biodiesel under mild reaction conditions and high yield of hydroxydecanoic acid conversion of 82.8%. The various conditions optimized for the higher conversion to FAME (15.8 ml of FAME) were 4 wt% catalysts at 4 h under 60 °C and further there is no increase of conversion to FAME above 6...
Source: Journal of Photochemistry and Photobiology B: Biology - February 28, 2019 Category: Speech-Language Pathology Source Type: research

Production of biomass and medicinal metabolites through adventitious roots in Ajuga bracteosa under different spectral lights
Publication date: Available online 26 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Huma Ali, Mubarak Ali Khan, Waqas Khan Kayani, Erum Dilshad, Rehana Rani, Raham Sher KhanAbstractAjuga bracteosa an important medicinal herb, is getting endangered worldwide due to destructive harvesting by pharmaceutical industries in its different habitats. It is in dire need for protection and demands conservation and sustainable utilization. In the present study, effects of α-naphthalene acetic acid (NAA) under different spectral lights were estimated on the growth, secondary metabolism and b...
Source: Journal of Photochemistry and Photobiology B: Biology - February 27, 2019 Category: Speech-Language Pathology Source Type: research

Biosynthesis of TiO2 nanoparticles and their application for treatment of brain injury-An in-vitro toxicity study towards central nervous system
This study also demonstrates the decline of neuroblast proliferation. In the conclusion, our investigation illustrated evidently the TiO2NPs toxic effect on the neuronal cells and rat brain also mentioned about toxicity effects of TiO2 which were not yet described, for example the decline in vitro neuroblast proliferation.Graphical abstract (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - February 25, 2019 Category: Speech-Language Pathology Source Type: research

Capping of silver nanoparticles by anti-inflammatory ligands: Antibacterial activity and superoxide anion generation
Publication date: Available online 22 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Manuel I. Azócar, Romina Alarcón, Antonio Castillo, Jenny M. Blamey, Mariana Walter, Maritza PaezAbstractSilver nanoparticles (AgNPs) have been widely recognized as antibacterial agents. However, its stability and activity over time have been poorly studied. In this work, the properties and characteristics of differently stabilized AgNPs were evaluated during a span of time. The surface capping agents were diclofenac (d), and ketorolac (k), which currently are used as anti-inflammatory in...
Source: Journal of Photochemistry and Photobiology B: Biology - February 23, 2019 Category: Speech-Language Pathology Source Type: research

Facile development of biodegradable polymer-based nanotheranostics: Hydrophobic photosensitizers delivery, fluorescence imaging and photodynamic therapy
Publication date: Available online 21 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Neeraj S. Thakur, Gopal Patel, Varun Kushwah, Sanyog Jain, Uttam C. BanerjeeAbstractPhotodynamic therapy is reported to be a promising technique to eradicate various cancers. As most of the photosensitizers (PSs) are hydrophobic in nature, thus, the effective delivery of PSs at the targeted site is the main hurdle associated with this therapy. Zinc phthalocyanine and Zinc naphthalocyanine are reported as good PSs, however, highly hydrophobic characteristics restrict their use for clinical applications....
Source: Journal of Photochemistry and Photobiology B: Biology - February 22, 2019 Category: Speech-Language Pathology Source Type: research

Binding Interaction of Juglone with Lysozyme: Spectroscopic Studies Aided by In Silico Calculations
Publication date: Available online 21 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Saumen Saha, Joydeep ChowdhuryAbstractBinding interactions between the drug Juglone (JUG) and Lysozyme (LYZ) have been explored in details from spectroscopic studies aided by in silico calculations. UV–Vis, steady state and time resolved fluorescence spectroscopic studies indicate the formation of LYZ–JUG complex in the ground state. Quenching of corrected fluorescence spectra of LYZ in presence of JUG at varied concentrations in different temperature range have been estimated from Stern&nd...
Source: Journal of Photochemistry and Photobiology B: Biology - February 22, 2019 Category: Speech-Language Pathology Source Type: research

Editorial Board
Publication date: March 2019Source: Journal of Photochemistry and Photobiology B: Biology, Volume 192Author(s): (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - February 20, 2019 Category: Speech-Language Pathology Source Type: research

Synergistic effect of phototherapy and chemotherapy on bladder cancer cells
Publication date: Available online 18 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Mehdi Shakibaie, Maryam Vaezjalali, Hashem Rafii-Tabar, Pezhman SasanpourAbstractDrug resistance as an important barrier in cancer treatment, has a close relation with alteration of cancer metabolism. Therefore, in this study the synergistic effect of phototherapy and chemotherapy were investigated on bladder cancer cells viability. The cytotoxicity effect of blue light irradiation was measured by MTT assay. Glucose consumption, lactate and ammonium formation were analyzed in blue LED-irradiated cancer...
Source: Journal of Photochemistry and Photobiology B: Biology - February 19, 2019 Category: Speech-Language Pathology Source Type: research

Impact of UV-B radiation on the photosystem II activity, pro-/antioxidant balance and expression of light-activated genes in Arabidopsis thaliana hy4 mutants grown under light of different spectral composition
Publication date: Available online 18 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Aleksandra Yu Khudyakova, Vladimir D. Kreslavski, Aleksandr N. Shmarev, Valery Yu Lyubimov, Galina N. Shirshikova, Pavel P. Pashkovskiy, Vladimir V. Kuznetsov, Suleyman I. AllahverdievAbstractThe effect of UV-B irradiation on the photosystem II (PSII) activity, the content of photosynthetic and UV-absorbing pigments (UAPs), activity of antioxidant enzymes such as catalase (CAT) and peroxidase (POD), as well as H2O2 content in 25-day-old wild type (WT) and the cryptochrome 1 (Cry1) mutant hy4 of Arabido...
Source: Journal of Photochemistry and Photobiology B: Biology - February 18, 2019 Category: Speech-Language Pathology Source Type: research

Eco-friendly walnut shell powder based facile fabrication of biogenic Ag-nanodisks, and their interaction with bovine serum albumin
Publication date: Available online 15 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Zoya ZaheerAbstractWalnut shell biomass was used for the extraction of juglone by water as a solvent at room temperature. Upon addition of AgNO3 to a dye solution, prefect transparent pale brown color develops within the reaction time. UV–visible spectroscopy revealed the appearance of surface plasmon absorption (SRP) peak at 410 nm for spherical silver nanoparticles (AgNPs). Transmission electron microscopy suggested the formation of spherical and truncated triangular nano-plate geometry of Ag...
Source: Journal of Photochemistry and Photobiology B: Biology - February 15, 2019 Category: Speech-Language Pathology Source Type: research

Tuber extract of Arisaema flavum eco-benignly and effectively synthesize silver nanoparticles: Photocatalytic and antibacterial response against multidrug resistant engineered E. coli QH4
Publication date: Available online 13 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Aziz Ur Rahman, Arif Ullah Khan, Qipeng Yuan, Yun Wei, Aftab Ahmad, Sadiq Ullah, Zia Ul Haq Khan, Saira Shams, Muhammad Tariq, Waqas AhmadAbstractMetal nanoparticles, synthesized using Phyto-constituents are the most economically and environmentally benign materials ever. Biogenic silver nanoparticles (AgNPs) from three fractions of Arisaema flavum tuber extract were synthesized and characterized by UV–visible spectroscopy, XRD (X-rays diffraction), FT-IR (Fourier transform infrared spectroscopy)...
Source: Journal of Photochemistry and Photobiology B: Biology - February 14, 2019 Category: Speech-Language Pathology Source Type: research

Light quality-induced changes of carotenoid composition in pak choi Brassica rapa ssp. chinensis
Publication date: Available online 13 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Katja Frede, Monika Schreiner, Susanne BaldermannAbstractCarotenoids as part of the photosystems are crucial for their assembly, light-harvesting, and photoprotection. Light of different wavelengths impacts the composition and structure of photosystems, thus offering the possibility to influence the carotenoid concentrations and composition in photosystems by illumination with specific narrow-banded light spectra. Key components involved in the regulation of gene transcription are still poorly characte...
Source: Journal of Photochemistry and Photobiology B: Biology - February 13, 2019 Category: Speech-Language Pathology Source Type: research

Defense potential of secondary metabolites in medicinal plants under UV-B stress
Publication date: Available online 13 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Swabha Takshak, S.B. AgrawalAbstractUltraviolet-B (UV-B) radiation has, for many decades now, been widely studied with respect to its consequences on plant and animal health. Though according to NASA, the ozone hole is on its way to recovery, it will still be a considerable time before UV-B levels reach pre-industrial limits. Thus, for the present, excessive UV-B reaching the Earth is a cause for concern, and UV-B related human ailments are on the rise. Plants produce various secondary metabolites as o...
Source: Journal of Photochemistry and Photobiology B: Biology - February 13, 2019 Category: Speech-Language Pathology Source Type: research

Corrigendum to “Anticancer, antimicrobial and photocatalytic activities of green synthesized magnesium oxide nanoparticles (MgONPs) using aqueous extract of Sargassum wightii” [Journal of Photochemistry and Photobiology B: Biology 190, January 2019, Pages 86–97]
Publication date: Available online 8 February 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Arivalagan Pugazhendhi, Raju Prabhu, Kavitha Muruganantham, Rajasree Shanmuganathan, Suganthy Natarajan (Source: Journal of Photochemistry and Photobiology B: Biology)
Source: Journal of Photochemistry and Photobiology B: Biology - February 8, 2019 Category: Speech-Language Pathology Source Type: research

Greener synthesis of zinc oxide nanoparticles using Trianthema portulacastrum extract and evaluation of its photocatalytic and biological applications
Publication date: Available online 31 January 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Zia Ul Haq Khan, Hafiz Masood Sadiq, Noor Samad Shah, Arif Ullah Khan, Nawshad Muhammad, Sadaf Ul Hassan, Kamran Tahir, Sher Zaman Shafi, Faheem Ullah Khan, Muhammad Imran, Naveed Ahmad, Faizan Ullah, Ashfaq Ahmad, Murtaza Syed, Muhammad Shafique Khalid, Saeed Ahmad Qaisrani, Mazhar Ali, Muhammad Zakir AliAbstractSynthesis of nanoparticles (NPs) through “green” chemistry is an exciting area of research with wide applications. Trianthema portulacastrum's extract containing greater amount of r...
Source: Journal of Photochemistry and Photobiology B: Biology - February 1, 2019 Category: Speech-Language Pathology Source Type: research

Photo-inactivation and efflux pump inhibition of methicillin resistant Staphylococcus aureus using thiolated cobalt doped ZnO nanoparticles
Publication date: Available online 31 January 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Gulrukh Iqbal, Sulaiman Faisal, Sara Khan, Dilawar Farhan Shams, Akhtar NadhmanAbstractMultidrug resistance (MDR) in bacteria is a major concern these days. One of the reasons is the mutation in efflux pump that prevents the retention of antibiotics and drugs in the bacterial cell. The current work is a step to overcome MDR in bacteria via inhibition of efflux pump and further photoinhibition by thiolated chitosan coated cobalt doped zinc oxide nanoparticles (Co-ZnO) in visible light. Co-ZnO were synthe...
Source: Journal of Photochemistry and Photobiology B: Biology - February 1, 2019 Category: Speech-Language Pathology Source Type: research

In vitro and In vivo toxicity assessment of phytofabricated ZnO nanoparticles showing bacteriostatic effect and larvicidal efficacy against Culex quinquefasciatus
Publication date: Available online 30 January 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Mariappan Yazhiniprabha, Baskaralingam Vaseeharan, Avinash Sonawane, Ananyaashree BeheraAbstractMurraya koenigii berry extract based zinc oxide nanoparticles (Mk-ZnO NPs) were synthesized by simple co-precipitation method and examined for bacteriostatic and larvicidal efficiency. Synthesized Mk-ZnO NPs were characterized by UV–Vis spectroscopy at 336 nm. X-Ray diffraction (XRD) showed crystalline nature as hexagonal. Fourier transform infrared spectroscopy (FTIR) spectrum exhibited strong peak a...
Source: Journal of Photochemistry and Photobiology B: Biology - January 31, 2019 Category: Speech-Language Pathology Source Type: research

Microtubule network as a potential candidate for targeting by gold nanoparticle-assisted photothermal therapy
Publication date: Available online 31 January 2019Source: Journal of Photochemistry and Photobiology B: BiologyAuthor(s): Behafarid Ghalandari, Kazem Asadollahi, Ali Shakerizadeh, Ali Komeili, Gholamhossein Riazi, Seyed Kamran Kamrava, Neda AttaranAbstractPhotothermal therapy is achieving ever-increasing attention as a promising method for killing cancer cells. Although, gold nanoparticles are regarded as one of the most effective photothermal therapy agents, the mechanisms underlying their action have to be addressed. Moreover, studies have showed that gold nanoparticles induce apoptosis in treated cultures. Hence, in thi...
Source: Journal of Photochemistry and Photobiology B: Biology - January 31, 2019 Category: Speech-Language Pathology Source Type: research