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https://www.readbyqxmd.com/read/28069192/acoustic-cavitation-induced-generation-of-stabilizer-free-extremely-stable-reduced-graphene-oxide-nanodispersion-for-efficient-delivery-of-paclitaxel-in-cancer-cells
#1
Renu Geetha Bai, Kasturi Muthoosamy, Fiona Natalia Shipton, Sivakumar Manickam
Graphene is one of the highly explored nanomaterials due to its unique and extraordinary properties. In this study, by utilizing a hydrothermal reduction method, graphene oxide (GO) was successfully converted to reduced graphene oxide (RGO) without using any toxic reducing agents. Following this, with the use of ultrasonic cavitation, profoundly stable few layer thick RGO nanodispersion was generated without employing any stabilizers or surfactants. During ultrasonication, shockwaves from the collapse of bubbles cause a higher dispersing energy to the graphene nanosheets which surpass the forces of Van der Waal's and π-π stacking and thus pave the way to form a stable aqueous nanodispersion of graphene...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28069023/in-vitro-biological-responses-to-nanofibrillated-cellulose-by-human-dermal-lung-and-immune-cells-surface-chemistry-aspect
#2
Viviana R Lopes, Carla Sanchez-Martinez, Maria Strømme, Natalia Ferraz
BACKGROUND: Nanocellulose, and particularly nanofibrillated cellulose (NFC), has been proposed for a diversity of applications in industry and in the biomedical field. Its unique physicochemical and structural features distinguish nanocellulose from traditional materials and enable its use as an advance nanomaterial. However, its nanoscale features may induce unknown biological responses. Limited studies with NFC are available and the biological impacts of its use have not been thoroughly explored...
January 10, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28056952/litchi-seed-extract-inhibits-epidermal-growth-factor-receptor-signaling-and-growth-of-two-non-small-cell-lung-carcinoma-cells
#3
Yuan-Chiang Chung, Chin-Hui Chen, Yu-Ting Tsai, Chih-Cheng Lin, Jyh-Ching Chou, Ting-Yu Kao, Chiu-Chen Huang, Chi-Hsuan Cheng, Chih-Ping Hsu
BACKGROUND: Litchi seeds possess rich amounts of phenolics and have been shown to inhibit proliferation of several types of cancer cells. However, the suppression of EGFR signaling in non-small cell lung cancer (NSCLC) by litchi seed extract (LCSE) has not been fully understood. METHODS: In this study, the effects of LCSE on EGFR signaling, cell proliferation, the cell cycle and apoptosis in A549 adenocarcinoma cells and NCI- H661 large-cell carcinoma cells were examined...
January 5, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28052265/transforming-activity-of-murine-herpesvirus-68-putative-growth-factor-is-related-to-the-ability-to-change-cytoskeletal-structure
#4
Veronika Lachová, Darina Svetlíková, František Golais, Miroslava Šupolíková, Lucia Turianová, Tatiana Betáková
Murine herpesvirus 68 (MHV-68) can transform cells in vitro and in vivo. We investigated putative murine herpesvirus growth factors (MHGFs) obtained by the separation of cell-free media from MHV-68-transformed cells on an FPLC Sephadex G15 column. The transforming activity of the MHGFA fraction was related to depolymerization of actin, disruption of the microtubule network, and punctate-reticular changes of the Golgi. The MHGFW fraction had only repressing activity on the transformed phenotype. Incubation of MRC-5 cells with MHGFW resulted in reticular changes of the Golgi apparatus, minor depolymerization of actin filaments, and no detectable changes of the microtubule network...
January 5, 2017: Intervirology
https://www.readbyqxmd.com/read/28049063/activity-of-pericampylus-glaucus-and-periglaucine-a-in-vitro-against-nasopharangeal-carcinoma-and-anti-inflammatory-activity
#5
Fiona Natalia Shipton, Teng-Jin Khoo, Md Shahadat Hossan, Christophe Wiart
ETHNOPHARMACOLOGICAL RELEVANCE: P. glaucus is a climbing plant found across Asia and used in traditional medicine to treat a number of conditions including splenomegaly, fever, cough, laryngitis, pulmonary disease, asthma, headache, hair loss, snake bite, boar bite, factures, boils, tumours, tetanus, rheumatic pain, itches and eclampsia. AIM OF THE STUDY: To test extracts of P. glaucus in a number of bioassays and determine the legitimacy of its traditional use...
December 31, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28029459/real-time-monitoring-of-cytotoxic-effects-of-electroporation-on-breast-and-colon-cancer-cell-lines
#6
Danijela M Cvetković, Marko N Živanović, Milena G Milutinović, Tijana R Djukić, Miloš D Radović, Aleksandar M Cvetković, Nenad D Filipović, Nebojša D Zdravković
PURPOSE: To study the effects of electroporation on different cell lines. MATERIAL: The effects of electroporation on human breast cancer (MDA-MB-231), human colon cancer (SW-480 and HCT-116), human fibroblast cell line (MRC-5), primary human aortic smooth muscle cells (hAoSMC) and human umbilical vein endothelial cells (HUVEC) were studied. Real-time technology was used for cell viability monitoring. Acridine orange/ethidium bromide assay was applied for cell death type determination...
October 22, 2016: Bioelectrochemistry
https://www.readbyqxmd.com/read/28009867/essential-oils-of-three-cow-parsnips-composition-and-activity-against-nosocomial-and-foodborne-pathogens-and-food-contaminants
#7
Ljuboš Ušjak, Silvana Petrović, Milica Drobac, Marina Soković, Tatjana Stanojković, Ana Ćirić, Marjan Niketić
Although some widespread, native cow parsnips (Heracleum L. spp., Apiaceae) had broad medicinal and culinary applications throughout history, the knowledge about their volatile constituents is insufficient. This work investigates the composition and bioactivities of H. sphondylium L. (HSPH), H. sibiricum L. (HSIB) and H. montanum Schleich. ex Gaudin (HMON) essential oils. The composition was tested by GC and GC-MS. (Z)-β-Ocimene was the most abundant in HSPH (28.9%) and HMON (20.4%) root oils, while in HSIB root oil, β-pinene (26...
December 23, 2016: Food & Function
https://www.readbyqxmd.com/read/27993635/the-potential-of-aqueous-extracts-of-bellucia-dichotoma-cogn-melastomataceae-to-inhibit-the-biological-activities-of-bothrops-atrox-venom-a-comparison-of-specimens-collected-in-the-states-of-par%C3%A3-and-amazonas-brazil
#8
Valéria Mourão de Moura, Luana Yamille Andrade de Souza, Noranathan da Costa Guimarães, Ilia Gilmara Carvalho Dos Santos, Patrícia Danielle Oliveira de Almeida, Ricardo Bezerra de Oliveira, Rosa Helena Veras Mourão, Maria Cristina Dos-Santos
ETHNOPHARMACOLOGICAL IMPORTANCE: The effectiveness of aqueous extract of Bellucia dichotoma Cogn. (Melastomataceae) specimems collected in Santarém, PA, against some biological activities of Bothrops atrox venom (BaV) has been scientifically proven. Here, we analyzed the components and assessed the anti-snakebite potential of aqueous extracts of bark of B. dichotoma collected in Manaus, AM, (AEBd-MAO) and Santarém, PA, (AEBd-STM), both in Brazil. MATERIALS AND METHODS: The phytochemical profiles of the aqueous extracts were identified using thin layer chromatography (TLC), and the concentrations of phenolics were determined by colorimetric assay...
January 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27986976/selective-susceptibility-to-nanosecond-pulsed-electric-field-nspef-across-different-human-cell-types
#9
Elena C Gianulis, Chantelle Labib, Gintautas Saulis, Vitalij Novickij, Olga N Pakhomova, Andrei G Pakhomov
Tumor ablation by nanosecond pulsed electric fields (nsPEF) is an emerging therapeutic modality. We compared nsPEF cytotoxicity for human cell lines of cancerous (IMR-32, Hep G2, HT-1080, and HPAF-II) and non-cancerous origin (BJ and MRC-5) under strictly controlled and identical conditions. Adherent cells were uniformly treated by 300-ns PEF (0-2000 pulses, 1.8 kV/cm, 50 Hz) on indium tin oxide-covered glass coverslips, using the same media and serum. Cell survival plotted against the number of pulses displayed three distinct regions (initial resistivity, logarithmic survival decline, and residual resistivity) for all tested cell types, but with differences in LD50 spanning as much as nearly 80-fold...
December 16, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27981650/rosbin-a-synthetic-small-molecule-induces-a549-cells-apoptosis-through-a-ros-mediated-pathway
#10
Ting Zhao, Wenling Jin, Hui Pan, Haizhou Li, Yang Zhao, Yang Feng
Rosbin (Thieno [2, 3-c] piperidine-3-carboxamide-2-[(3-methoxy-naphtha-lene-2-carbonyl)-amino]-6-(benzyl)-, hydrochloride), a synthetic piperidinothieno derivative compound obtained from chemical genetics screenings, significantly suppresses the viability of non-small cell lung cancer A549 cells with an IC50 of 2.05 ± 0.31 µM. It only decreases growth of non-tumour MRC-5 cells at the doses higher than 10 µM. Rosbin induces apoptosis in a dose-dependent manner by reducing the mitochondrial membrane potential (MMP) and increasing activities of caspases-3/7 and caspase-9 in A549 cells, without affecting the activity of caspase-8...
December 16, 2016: Cell Biology International
https://www.readbyqxmd.com/read/27979771/rapid-and-strong-de-novo-donor-specific-antibody-development-in-a-lung-transplant-recipient-short-communication-case-report
#11
Andrew L Lobashevsky, Kevin M Rosner, John D May, Michael D Duncan, Chadi A Hage, Erin N Lushin, Eve E Anderson, David W Roe
A 66-yo female patient (typed B*39:01, 44:02) underwent first left single lung transplant (typed B*81:01, 15:17) on 02/07/2016 with negative for DSA in current and historical samples. On 02/17/2016 strong de novo DSA (MFI=15,200, C1q+) to B81 were detected. The recipient has two children typed B*07:02, 44:02 B*27:03, 39:01, and had received multiple vaccinations. Twinrix, Zostavax and MMR vaccines contain viruses grown on live human lung fibroblasts (MRC-5, typed B*07:02, 44:02, and WI-38, typed B*08:01, 58:01)...
December 12, 2016: Transplant Immunology
https://www.readbyqxmd.com/read/27973440/in-vitro-antitumor-active-gold-i-triphenylphosphane-complexes-containing-7-azaindoles
#12
Pavel Štarha, Zdeněk Trávníček, Bohuslav Drahoš, Zdeněk Dvořák
A series of gold(I) complexes of the general composition [Au(naza)(PPh₃)] (1-8) was prepared and thoroughly characterized (e.g., electrospray ionization (ESI) mass spectrometry and multinuclear nuclear magnetic resonance (NMR) spectroscopy). The N1-deprotonated anions of 7-azaindole or its derivatives (naza) are coordinated to the metal centre through the N1 atom of their pyrrole ring, as proved by a single crystal X-ray analysis of the complexes [Au(3I5Braza)(PPh₃)] (7) and [Au(2Me4Claza)(PPh₃)]·½H₂O (8')...
December 11, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27933893/isolation-and-structure-elucidation-by-lc-dad-ms-and-lc-dad-spe-nmr-of-cyclopeptide-alkaloids-from-the-roots-of-ziziphus-oxyphylla-and-evaluation-of-their-antiplasmodial-activity
#13
Emmy Tuenter, Rizwan Ahmad, Kenn Foubert, Adnan Amin, Maria Orfanoudaki, Paul Cos, Louis Maes, Sandra Apers, Luc Pieters, Vassiliki Exarchou
Nine cyclopeptide alkaloids (1-9), of which five (compounds 2, 3, 5, 8, and 9) are described herein for the first time, were isolated from roots of Ziziphus oxyphylla by means of conventional separation methods as well as semipreparative HPLC with DAD and ESIMS detection and LC-DAD-SPE-NMR. Structure elucidation was done by spectroscopic means. Nummularine-R (1), a previously known constituent from this species, was isolated along with its new derivatives O-desmethylnummularine-R (2) and O-desmethylnummularine-R N-oxide (3)...
November 23, 2016: Journal of Natural Products
https://www.readbyqxmd.com/read/27933733/mannich-bases-of-1-2-4-triazole-3-thione-containing-adamantane-moiety-synthesis-preliminary-anticancer-evaluation-and-molecular-modeling-studies
#14
Milorad Z Milošev, Katarina Jakovljević, Milan D Joksović, Tatjana Stanojković, Ivana Z Matić, Milka Perović, Vesna Tešić, Selma Kanazir, Milan Mladenović, Marko V Rodić, Vukadin M Leovac, Snežana Trifunović, Violeta Marković
A series of 18 novel N-Mannich bases derived from 5-adamantyl-1,2,4-triazole-3-thione was synthesized and characterized using NMR spectroscopy and X-ray diffraction technique. All derivatives were evaluated for their anticancer potential against four human cancer cell lines. Several tested compounds exerted good cytotoxic activities on K562 and HL-60 cell lines, along with pronounced selectivity, showing lower cytotoxicity against normal fibroblasts MRC-5 compared to cancer cells. The effects of compounds 5b, 5e and 5j on the cell cycle were investigated by flow cytometric analysis...
December 9, 2016: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/27928952/in-vitro-anticancer-evaluation-of-platinum-ii-iv-complexes-with-diisoamyl-ester-of-s-s-ethylenediamine-n-n-di-2-propanoic-acid
#15
Bojana B Zmejkovski, Nebojša Pantelić, Lana Filipović, Sandra Aranđelović, Siniša Radulović, Tibor J Sabo, Goran N Kaluđerović
Platinum(II) and platinum(IV) complexes [PtCln{(S,S)-(i-Am)2eddip}] (n = 2, 4: 1, 2, respectively; (S,S)-(i-Am)2eddip = O,O'-diisoamyl-(S,S)-ethylenediamine-N,N'-di-2-propanoate) were synthesized and characterized by elemental analysis, IR, 1H and 13C NMR spectroscopy and mass spectrometry. Quantum chemical calculations were used to predict formed isomers of 1 and 2. Furthermore, reduction of 2 with ascorbic acid was followed by time-dependant 13C NMR spectroscopy in order to enable assignation of the formed isomers for complex 1...
December 7, 2016: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27830183/human-cytomegalovirus-infection-enhances-nk-cell-activity-in-vitro
#16
Astrid Tschan-Plessl, Martin Stern, Laurent Schmied, Christelle Retière, Hans H Hirsch, Christian Garzoni, Christian van Delden, Katia Boggian, Nicolas J Mueller, Christoph Berger, Jean Villard, Oriol Manuel, Pascal Meylan, Grzegorz Terszowski
BACKGROUND: Occurring frequently after solid organ and hematopoietic stem cell transplantation, cytomegalovirus (CMV) replication remains a relevant cause of mortality and morbidity in affected patients. Despite these adverse effects, an increased alloreactivity of natural killer (NK) cells after CMV infection has been assumed, but the underlying physiopathological mechanisms have remained elusive. METHODS: We used serial analyses of NK cells before and after CMV infection in kidney transplant recipients as an in vivo model for CMV primary infection to explore the imprint of CMV infection using every patient as their own control: We analyzed NK cell phenotype and function in 47 CMV seronegative recipients of CMV seropositive kidney grafts, who developed CMV primary infection posttransplant...
July 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27812019/measurement-of-in-plane-elasticity-of-live-cell-layers-using-a-pressure-sensor-embedded-microfluidic-device
#17
Chien-Han Lin, Chien-Kai Wang, Yu-An Chen, Chien-Chung Peng, Wei-Hao Liao, Yi-Chung Tung
In various physiological activities, cells experience stresses along their in-plane direction when facing substrate deformation. Capability of continuous monitoring elasticity of live cell layers during a period is highly desired to investigate cell property variation during various transformations under normal or disease states. This paper reports time-lapsed measurement of live cell layer in-plane elasticity using a pressure sensor embedded microfluidic device. The sensor converts pressure-induced deformation of a flexible membrane to electrical signals...
November 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27811159/in-vitro-cytotoxicity-and-genotoxicity-of-composite-mixtures-of-natural-rubber-and-leather-residues-used-for-textile-applications
#18
Dalita Gsm Cavalcante, Andressa S Gomes, Elton Ap Dos Reis, Caroline S Danna, Leandra E Kerche-Silva, Eidi Yoshihara, Aldo E Job
A novel composite material has been developed from natural rubber and leather waste, and a corresponding patent has been filed. This new material may be incorporated into textile and footwear products. However, as leather waste contains chromium, the biocompatibility of this new material and its safety for use in humans must be investigated. The aim of the present study was to investigate the presence of chromium in this new material, determine the amount of each form of chromium present (trivalent or hexavalent), and evaluate the potential cytotoxic and genotoxic effects of the novel composite in two cell lines...
November 3, 2016: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/27806706/rice-callus-suspension-culture-inhibits-growth-of-cell-lines-of-multiple-cancer-types-and-induces-apoptosis-in-lung-cancer-cell-line
#19
Nafeesa Rahman, Surendar Reddy Dhadi, Aparna Deshpande, Wusirika Ramakrishna
BACKGROUND: Cancer is one of the leading cause of mortality. Even though efficient drugs are being produced to treat cancer, conventional medicines are costly and have adverse effects. As a result, alternative treatments are being tried due to their low cost and little or no adverse effects. Our previous study identified one such alternative in rice callus suspension culture (RCSC) which was more efficient than Taxol® and Etoposide, in reducing the viability of human colon and renal cancer cells in culture with minimal or no effect on a normal cell line...
November 2, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27805201/new-ru-ii-pincer-complexes-synthesis-characterization-and-biological-evaluation-for-photodynamic-therapy
#20
Leila Tabrizi, Hossein Chiniforoshan
Three new ruthenium(ii) complexes of NCN pincer and phenylcyanamide derivative ligands of the formula [Ru(L)(Ph2phen)(3,5-(NO2)2pcyd)], 1, [Ru(L)(Me2phen)(3,5-(NO2)2pcyd)], 2, and [Ru(L)(Cl2phen)(3,5-(NO2)2pcyd)], 3 (HL: 5-methoxy-1,3-bis(1-methyl-1H-benzo[d]imidazol-2-yl)benzene, 3,5-(NO2)2pcyd: 3,5-(NO2)2pcyd, Ph2phen: 4,7-diphenyl-1,10-phenanthroline, Me2phen: 4,7-dimethyl-1,10-phenanthroline, Cl2phen: 4,7-dichloro-1,10-phenanthroline) have been synthesized and studied as potential photosensitizers (PSs) in photodynamic therapy (PDT)...
November 2, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
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