Search Results
Results 1 - 50 of 1648
1 2 3 4 5 6 7 8 9 10 >
Wang Yao Y Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics & Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, - - 2014
Digital single-cell assays hold high potentials for the analysis of cell apoptosis and the evaluation of chemotherapeutic reagents for cancer therapy. In this paper, a microfluidic hydrodynamic trapping system was developed for digital single-cell assays with the capability of monitoring cellular dynamics over time. The microfluidic chip was designed with ...
DeGuire Sean M SM Department of Chemistry, Vanderbilt University, Vanderbilt Institute of Chemical Biology, Nashville, TN 37232 - - 2014
Apoptolidin A has been described among the top 0.1 % most-cell-selective cytotoxic agents to be evaluated in the NCI 60 cell line panel. The molecular structure of apoptolidin A consists of a 20-membered macrolide with mono- and disaccharide moieties. In contrast to apoptolidin A, the aglycone (apoptolidinone) shows no cytotoxicity (>10 ...
Chen Hong H Pharmaceutical Research Center, Guangzhou Medical University, Guangzhou 510182, - - 2014
A series of novel arylpiperazine derivatives was synthesized. The in vitro cytotoxic activities of all synthesized compounds against three human prostate cancer cell lines (PC-3, LNCaP, and DU145) were evaluated by a CCK-8 assay. Compounds 10, 24 and 29 exhibited strong cytotoxic activities against LNCaP cells (IC50 <3μM). In addition, ...
Inami Keita K Department of Environmental and Health Science, Tohoku Pharmaceutical University, Sendai, - - 2014
The bioavailability of orally administered therapies are often significantly limited in the human intestine by the metabolic activities of Cytochrome P450 3A4 (CYP3A4) and P-glycoprotein (P-gp). Predicting whether candidate compounds induce CYP3A4 and P-gp is a crucial stage in the drug development process, as drug-drug interactions may result in the ...
Aitken Emma - - 2014
Guidance varies regarding the optimal timing of arteriovenous fistula (AVF) creation. The aim of this study was to evaluate the association between uraemia, haemodialysis and early AVF failure. Immunoblotting and cell proliferation assays were performed on vascular smooth muscle cells (VSM) cells isolated from long saphenous vein samples to evaluate ...
Nicoletti Roberta R Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, 06520, - - 2014
Ovarian and uterine carcinosarcoma (CS) are characterized by their aggressive clinical behavior and poor prognosis. We evaluated the efficacy of trastuzumab-emtansine (T-DM1), against primary HER2 positive and HER2 negative CS cell lines in vitro and in vivo. Eight primary CS cell lines were evaluated for HER2 amplification and protein expression ...
Huan Yi Y State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100050, - - 2014
Dipeptidyl peptidases (DPP) 8 and 9 are homologous, cytoplasmic postproline-cutting enzymes, which have similar enzymatic activity and preferred substrates as DPP4. DPP4 is a well-known target for treating diabetes mellitus. With the increased concern of non-selectivity and toxicities caused by DPP4 inhibitors, it is essential to establish new ex vivo ...
Zhang Yongtai Y Department of Pharmaceutical Sciences, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, - - 2014
Span 40-based niosomes were employed as nanocarriers to improve cutaneous absorption of salidroside. The niosomal formulation with a molar proportion of Span 40 to cholesterol of 4:3 showed the highest transdermal flux and skin deposition of salidroside. The transdermal flux of the 4:3 niosomal formulation was significantly greater than that ...
Hrabina Jan - - 2014
We present the results of measurement and evaluation of spectral properties of iodine absorption cells filled at certain saturation pressure. A set of cells made of borosilicate glass instead of common fused silica was tested for their spectral properties in greater detail with special care for the long-term development of ...
Jurášek Michal M Department of Chemistry of Natural Compounds, Institute of Chemical Technology in Prague, 166 28 Prague, Czech - - 2014
Here, we report synthesis and biological evaluation of fluorescent nandrolone-3-carboxymethyloxime derivatives conjugated with green-emitting bodipy dye via PEG linkers. All the newly-synthesized compounds were evaluated for their effect on cell proliferation in vitro in MCF-7, LNCaP, PC-3 and HEK 293T model cell lines using WST-1 assay. By means of live-cell ...
Desvergne Audrey - - 2014
We report here the synthesis and biological evaluation of fluorescent probes functioning as inhibitors that noncovalently block human immuno- and constitutive proteasomes. These cell-penetrating linear analogues of the natural cyclopeptide TMC-95A were efficient on cells at the nanomolar level and assessed by confocal microscopy and flow cytometry. They may constitute ...
Soumya R S RS Agroprocessing and Natural Products Division, CSIR - National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, Kerala, India. - - 2014
Nanotechnology for the treatment and diagnosis has been emerging recently as a potential area of research and development. In the present study, selenium incorporated guar gum nanoparticles have been prepared by nanoprecipitation and characterized by transmission electron microscopy and particle size analysis. The nanoparticles were screened for antioxidant potential (metal ...
Ikeda Hiromasa H Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan. - - 2014
The unusual sugars, α-aculosides, which appear in certain antibiotics and have an α,β-unsaturated ketone structure, were found to be novel and selective Michael acceptors for the thiol function of cysteine residues. A coumarin derivative possessing α-aculoside as a Michael acceptor effectively and irreversibly operated as a fluorescent probe in cells. ...
Xu Wenhong W Department of Radiation Oncology, The Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310009, - - 2014
To evaluate the efficacy of doxorubicin (DOX) loaded micelles in enhancing DOX radiosensitivity in DOX-resistant K562 tumor cells (K562/DOX cells), DOX loaded polyethylene glycol-polycaprolactone (PEG-PCL) copolymer micelles and pluronic 105 (P105) micelles, and composite micelles composed of PEG-PCL and P105 were prepared. By using MTT assay, soft agar cloning assays, ...
Zhou Hong H School of Chemistry and Chemical Engineering of Linyi University, Linyi 276005 (P. R. - - 2014
A newly prepared [(ppy)2 Ir(dcbpy)](+) ⋅PF6 (-) (ppy: 2-phenylpyridyl; dcbpy: 4,4'-dicarboxy-2,2'-bipyridyl) and gold nanoparticle functionalized mesoporous silica nanoparticle (Au/Ir-MSN) is reported. Based on the binding between concanavalin A (Con A) and mannose, the novel nanoparticle was applied to an ultrasensitive electrochemiluminescence (ECL) in situ cytosensing strategy and the dynamic evaluation of cell-surface ...
Kasacka I I Department of Histology and Cytophysiology, The Faculty of Pharmacy, Medical University of Bialystok, Bialystok, Poland. - - 2014
Hypertension is one of the most frequently occurring diseases worldwide. Approximately 10% of the population with hypertension reveal the secondary type of hypertension. The aim of this study was to evaluate the cells containing CART, insulin and glucagon in the pancreas of rats with renovascular hypertension. An experimental model of ...
Vichuviwat Rapeephat R The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, - - 2014
Butanol production by cell immobilization onto porous materials-brick and zeolite 13X-was investigated using Clostridium beijerinckii TISTR 1461. Characterization results of two materials were completed to evaluate their potential as an immobilization carrier. Although zeolite has greater porosity than brick, it cannot be used for cell aggregation without treating with chemical. ...
Canisso If I Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, - - 2014
An 8-year-old, mixed breed, polled goat was presented for evaluation of male-like behaviour. Clinical findings included clitoromegaly, a heavily muscled neck, pronounced beard, and erect dorsal guard hairs, which are phenotypic characteristics commonly observed in intersex animals. Transrectal ultrasonography revealed the presence of two abdominal masses caudolateral to the uterine ...
Tomanová Pavla P Department of Chemistry of Natural Compounds, Institute of Chemical Technology in Prague, CZ-16628 Prague, Czech - - 2014
Trilobolide (Tb), a potent natural counterpart of thapsigargin, is a sesquiterpene lactone of guaianolide type isolated from horse caraway (Laser trilobum, L. Borkh). Tb exerts remarkable pharmacological properties based on irreversible inhibition of sarco/endoplasmic reticulum calcium ATPase (SERCA), thus being of increasing interest for cancer cure. Additionally, another pharmacological activity ...
Lopez Salvatore S Division of Gynecologic Oncology, University Campus Bio-Medico of Roma, Via Alvaro del Portillo 21, 00144 Roma, - - 2014
To evaluate the efficacy of Taselisib, a selective inhibitor of PIK3CA, against primary uterine serous carcinomas (USC) harboring PIK3CA mutations and HER2/neu gene amplification. Sensitivity to taselisib was evaluated by flow-cytometry viability assays in vitro against nine primary USC cell lines. Cell cycle distribution and downstream signaling were assessed by ...
Jun Maria M Department of Chemistry, Wellesley College, Wellesley, MA 02481, - - 2014
A series of isoprenylated coumarins has been designed, synthesized, and evaluated against human pancreatic adenocarcinoma cell line PANC-1 under nutrient-rich and nutrient-deprived conditions. The compounds described investigate the effect of isoprenyl chain length and positioning on cell growth inhibition. The majority of these compounds displayed cytotoxicity against PANC-1 cells selectively ...
Ruiz de Arcaute C C Cátedra de Citología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Calle 64 N° 3, B1904AMA La Plata, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), - - 2014
Acute toxicity and genotoxicity of the dicamba-based commercial herbicide formulation Banvel(®) were evaluated on Cnesterodon decemmaculatus (Pisces, Poeciliidae) exposed under laboratory conditions. A lethal effect was used as the end point for mortality, whereas frequency of micronuclei (MNs) and DNA single-strand breaks evaluated by the single cell gel electrophoresis assay ...
Szymanski Pawel T - - 2014
Three natural cembranoids from the Red Sea soft coral Sarcophyton glaucum namely (1S,2E,4R,6E,8R,11S,12R)-8,12-epoxy-2,6-cembradiene-4,11-diol, (1S,2E,4R,6E,8S,11R,12S)-8,11-epoxy-4,12-epoxy-2,6-cembradiene and (1S,4R,13S)-cembra-2E,7E,11E-trien-4,13-diol were evaluated for their inhibitory effects on mouse melanoma B16F10 cell growth. Results show that all the cembranoids strongly inhibit viability of melanoma cells particularly during 48 -72 hrs treatment and also inhibit de ...
Nersesyan Armen A Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, - - 2014
The first micronucleus (MN) study with urine derived cells (UDC) appeared 30 years ago. So far, 56 investigations have been published with this method and it was shown that it can be used for the detection of chromosomal damage caused by environmental and lifestyle factors as well as by occupational ...
Pereira Wvs W Laboratory of Tree Seeds, Departament of Forest Sciences, Federal University of Lavras ? UFLA, Lavras, MG, - - 2014
This study evaluated the loss of desiccation tolerance in C. langsdorffii seeds during the germination process. Seeds were imbibed for 24, 48, 72, 96, 120 and 144 hours and dried to the initial moisture content, kept in this state for 3 days after which they were submitted to pre-humidification and ...
Ren Feng F School of Pharmaceutical Sciences, Nanchang - - 2014
A series of novel benzyloxyurea derivatives was designed, synthesized by substituting different benzyls or phenyls on N,N'-positions of the hydroxyurea (HU). These target compounds were evaluated for their anticancer activity in vitro against human leukemia cell line K562 and murine leukemia cell line L1210 in comparison with HU by the ...
Han Yiqun Y Department of Respiratory Medicine, General Hospital of Ji'nan Command, PLA, Ji'nan, People's Republic of - - 2014
Nanostructured lipid carriers (NLC), composed of solid and liquid lipids, and surfactants are potentially good colloidal drug carriers. The aim of this study was to develop surface-modified NLC as multifunctional nanomedicine for codelivery of enhanced green fluorescence protein plasmid (pEGFP) and doxorubicin (DOX). TWO DIFFERENT NANOCARRIERS: pEGFP- and DOX-loaded NLC, ...
Tvingstedt Kristofer K Experimental Physics VI, Julius-Maximillian University of Würzburg, 97074 Würzburg, - - 2014
The maximum efficiency of any solar cell can be evaluated in terms of its corresponding ability to emit light. We herein determine the important figure of merit of radiative efficiency for Methylammonium Lead Iodide perovskite solar cells and, to put in context, relate it to an organic photovoltaic (OPV) model ...
Jafarain Abbas A Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, - - 2014
There are considerable attempts worldwide on herbal and traditional compounds to validate their use as anti-cancer drugs. Plants from Moringaceae family including Moringa oleifera possess several activities such as antitumor effect on tumor cell lines. In this study we sought to determine if callus and leaf extracts of M. oleifera ...
Bai Xiao-Guang XG Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China. - - 2014
A series of chalcones a1-20 bearing a 4-OMe groups on the A-ring were initially synthesized and their anticancer activities towards HepG2 cells evaluated. Subsequently, a series of chalcones b1-42 bearing methoxy groups at the 2' and 6'-positions of the B-ring were synthesized and their anticancer activities towards five human cancer ...
Montenegro Ivan I Facultad de Farmacia, Escuela de Química y Farmacia, Universidad de Valparaíso, Av. Gran Bretaña N° 1093, Valparaíso 234000, Chile. - - 2014
Twelve drimanes, including polygodial (1), isopolygodial (2), drimenol (3), confertifolin (4), and isodrimenin (5), were obtained from natural sources. Semi-synthetic derivatives 6-12 were obtained from 1 and 2, and cytotoxic activity was evaluated in vitro against cancer cell lines (HT-29, MDA-MB231, DHF, MCF-7, PC-3, DU-145, and CoN). IC50 values were ...
Wettersten Hiromi I HI Division of Nephrology, Dept. of Internal Medicine, University of California Davis, Davis, California, United States of - - 2014
Despite the advent of FDA-approved therapeutics to a limited number of available targets (kinases and mTOR), PFS of kidney cancer (RCC) has been extended only one to two years due to the development of drug resistance. Here, we evaluate a novel therapeutic for RCC which targets the exportin-1 (XPO1) inhibitor. ...
Ma Ning-Yi - - 2013
To investigate the influence of chronic hypoxia and anoxia on cell survival after low- and high-LET radiation, CHO-K1 cells were kept for 24 h under chronic hypoxia (94.5% N2; 5% CO2; 0.5% O2) or chronic anoxia (95% N2; 5% CO2). Irradiation was performed using 250 kVp X-rays or carbon ions ...
Zare Mirakabadi Abbas A Dept. of Venomous Animals and Antivenom Production, Razi Vaccine and Serum Research Institute, Karaj, - - 2013
Current anti-cancer drug therapy results in systemic side effects due to non-specific uptake by normal healthy noncancerous tissues. To alleviate this difficulty, many attempts have been devoted to the development of new delivery systems such as polymeric Nanoparticles (NPs). In this study, we prepared ICD-85 NPs based on sodium alginate ...
Silver Kristopher - - 2012
Non-steroidal anti-inflammatory drugs (NSAIDs) are among the most widely used drugs for the suppression of inflammation and pain. However, the analgesic properties of NSAIDs are also associated with significant negative side effects, most notably in the gastrointestinal (GI) tract. Increasingly, evidence indicates that the ulcerogenic properties of some NSAIDs are ...
Ghaffarian Rasa - - 2012
Bioavailability of oral drugs, particularly large hydrophilic agents, is often limited by poor adhesion and transport across gastrointestinal (GI) epithelial cells. Drug delivery systems, such as sub-micrometer polymer carriers (nanocarriers, NCs) coupled to affinity moieties that target GI surface markers involved in transport, may improve this aspect. To explore this ...
Hamade Eva - - 2012
The anti-inflammatory effect of two new thiazoles derivatives CX-32 (N-[4-(4-hydroxy-3-methoxyphenyl)-1,3-thiazol-2-yl]acetamide ) and CX-35 (4-(2-amino-1,3-thiazol-4-yl)-2-methoxyphenol), was investigated in LPS-stimulated RAW 264.7 cell line. Synthesis, structure analysis and purity of these compounds were evaluated by high performance liquid chromatography, H1 NMR, and C14 NMR. Assessment of CX-32 and CX-35 inhibitory effect on ...
Liu Dong-bo DB Cancer Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, - - 2012
To investigate the mechanisms underlying the anticancer effect of celecoxib on nasopharyngeal carcinoma (NPC). NPC cell lines, HNE1 and CNE1-LMP1, were treated with various concentrations of celecoxib for 48 h. The antiproliferative effect of celecoxib was assessed using MTT assay. Both cell cycle profiles and apoptosis were analyzed using flow ...
Doppalapudi Rupa S - - 2012
The genotoxic activities of three cancer chemopreventive drug candidates, CP-31398 (a cell permeable styrylquinazoline p53 modulator), SHetA2 (a flexible heteroarotinoid), and phospho-ibuprofen (PI, a derivative of ibuprofen) were tested. None of the compounds were mutagenic in the Salmonella/Escherichia coli/microsome plate incorporation test. CP-31398 and SHetA2 did not induce chromosomal aberrations ...
Nagano Y - - 2012
Nonsteroidal anti-inflammatory drugs (NSAIDs) often cause gastrointestinal complications such as gastric ulcers and erosions. Recent studies on the pathogenesis have revealed that NSAIDs induce lipid peroxidation in gastric epithelial cells by generating superoxide anion in mitochondria, independently with cyclooxygenase-inhibition and the subsequent prostaglandin deficiency. Although not clearly elucidated, the impairment ...
Higashi Ai - - 2012
Background: There is no in vitro test to diagnose aspirin-intolerant asthma (AIA). The aim of this study was to test if challenge with aspirin of sputum cells from subjects with AIA triggers the release of cysteinyl leukotrienes (CysLTs), known to be mediators of bronchoconstriction in AIA. Methods: Sputum induction was ...
Hojka-Osinska Anna - - 2012
Currently used cytotoxic drugs in cancer therapy have a similar mechanism of action and low specificity. Applied simultaneously, they show an additive effect with strong side effects. Clinical trials with the use of different agents in cancer therapy show that the use of these compounds alone is not very effective ...
Kartal-Hodzic Alma - - 2012
Acetaldehyde is a known mutagenic substance and has been classified as a group-one carcinogen by the WHO. It is possible to bind acetaldehyde locally in the gastrointestinal (GI) tract with the semi-essential amino acid l-cysteine, which reacts covalently with acetaldehyde and forms compound 2-methyl-thiozolidine-4-carboxylic acid (MTCA). The Caco-2 cell line ...
Tavolari Simona - - 2012
The ability to induce changes in cell membrane properties is nowadays considered an additional mechanism to explain the pharmacological effects of non-steroidal anti-inflammatory drugs (NSAIDs). We previously demonstrated that the NSAID Licofelone, a dual cyclooxygenase/5-lipoxygenase inhibitor, triggers apoptosis in HCA-7 colon cancer cells independently from the inhibition of these enzymes. ...
Osborne Neville N - - 2012
Oxidative stress to RGC-5 cells in culture was delivered by exposure to a combination of glutamate (Glu) and buthionine-S,R-sulfoximine (BSO). The effect of the insult on cell survival was quantified by the resazurin-reduction and a dead/live assays. Moreover, breakdown of DNA, the localisation of phosphatidylserine and reactive radical species (ROS) ...
Piché Carlie D - - 2012
Phthalate plasticizers are used in the plastics industry to aid in processing and impart flexibility to plastics. Due to the broad use of plastics, and the tendency of plasticizers to leach out of polymers, plasticizers have become ubiquitous in the environment. Concerns about the testicular toxicity of phthalate plasticizers, in ...
De Luna-Bertos E - - 2012
Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used in bone tissue repair treatment for their pharmacological action. The objective of this study was to determine the effect of aspirin, on osteoblast growth, using MG63 cell line as osteoblast model. MTT spectrophotometry results showed that 20, 100, and 1000 μM aspirin doses ...
Marangoni Roberto - - 2011
By using NMR spectroscopy, a non-invasive investigation technique, we performed in vivo experiments aimed at uncovering the metabolic pathways involved in the early response of Fabrea salina cells to ultraviolet (UV) radiation. This hypersaline ciliate was chosen as a model organism because of its well-known high resistance to UV radiation. ...
Jiang Wen - - 2012
The interplay between phase II enzymes and efflux transporters leads to extensive metabolism and low bioavailability for flavonoids. To investigate the simplest interplay between one UDP-glucuronosyltransferase isoform and one efflux transporter in flavonoid disposition, engineered HeLa cells stably overexpressing UGT1A9 were developed, characterized, and further applied to investigate the metabolism ...
Bermejo Clara - - 2011
Over the past decade, we have learned that cellular processes, including signalling and metabolism, are highly compartmentalized, and that relevant changes in metabolic state can occur at sub-second timescales. Moreover, we have learned that individual cells in populations, or as part of a tissue, exist in different states. If we ...
1 2 3 4 5 6 7 8 9 10 >