Read by QxMD icon Read

cell free assay

Haruyoshi Tanaka, Mitsuro Kanda, Dai Shimizu, Chie Tanaka, Daisuke Kobayashi, Masamichi Hayashi, Naoki Iwata, Suguru Yamada, Tsutomu Fujii, Goro Nakayama, Hiroyuki Sugimoto, Michitaka Fujiwara, Yukiko Niwa, Yasuhiro Kodera
BACKGROUND: Gastric cancer (GC) relapse can occur even if curative resection is achieved. Biomarkers predicting recurrence are needed to provide appropriate postoperative surveillance and perioperative therapeutic strategy. METHODS: A global expression profiling was performed using tissues from GC patients with synchronous liver-confined metastasis. Family with sequence similarity 46, member C (FAM46C), was identified as a candidate biomarker. mRNA expression analysis, direct nucleotide sequencing, bisulfite sequencing and copy number assays for FAM46C were performed with eleven GC cell lines...
October 21, 2016: Annals of Surgical Oncology
Steven Z Josefowicz, Miho Shimada, Anja Armache, Charles H Li, Rand M Miller, Shu Lin, Aerin Yang, Brian D Dill, Henrik Molina, Hee-Sung Park, Benjamin A Garcia, Jack Taunton, Robert G Roeder, C David Allis
The inflammatory response requires coordinated activation of both transcription factors and chromatin to induce transcription for defense against pathogens and environmental insults. We sought to elucidate the connections between inflammatory signaling pathways and chromatin through genomic footprinting of kinase activity and unbiased identification of prominent histone phosphorylation events. We identified H3 serine 28 phosphorylation (H3S28ph) as the principal stimulation-dependent histone modification and observed its enrichment at induced genes in mouse macrophages stimulated with bacterial lipopolysaccharide...
October 20, 2016: Molecular Cell
Natália Helen Ferreira, Kelly Jacqueline Barbosa de Andrade, Luís Fernando Leandro, Nathália Oliveira Acésio, Suzana Amorim Mendes, Lucas Silva Cintra, Ana Helena Januário, Denise Crispim Tavares
The aim of this study was to examine the cytotoxic and genotoxic potential of a hydroethanolic extract of Schefflera vinosa (SV), a plant with schistosomicidal activity, as well as its influence on DNA damage induced by different mutagens, methyl methane sulfonate (MMS) and hydrogen peroxide (H2O2), in V79 cells and Swiss mice. Schefflera vinosa extract produced cytotoxicity at concentrations of 312.5 µg/ml or higher using the XTT cell proliferation assay kit. Treatment of V79 cell cultures with the highest SV concentration tested (150 µg/ml) significantly increased the frequency of micronuclei (MN) compared to controls...
October 21, 2016: Journal of Toxicology and Environmental Health. Part A
Shin Yup Lee, Cheng Cheng Jin, Jin Eun Choi, Mi Jeong Hong, Deuk Kju Jung, Sook Kyung Do, Sun Ah Baek, Hyo Jung Kang, Hyo-Gyoung Kang, Sun Ha Choi, Won Kee Lee, Yangki Seok, Eung Bae Lee, Ji Yun Jeong, Kyung Min Shin, Sukki Cho, Seung Soo Yoo, Jaehee Lee, Seung Ick Cha, Chang Ho Kim, You Mie Lee, In-Kyu Lee, Sanghoon Jheon, Jae Yong Park
This study was conducted to investigate whether polymorphisms of genes involved in glycolysis are associated with the prognosis of patients with non-small cell lung cancer (NSCLC) after surgical resection. Forty-four single nucleotide polymorphisms (SNPs) of 17 genes in glycolytic pathway were investigated in a total of 782 patients with NSCLC who underwent curative surgical resection. The association of the SNPs with overall survival (OS) and disease free survival (DFS) were analyzed. Among the 44 SNPs investigated, four SNPs (ENO1 rs2274971A > G, PFKM rs11168417C > T, PFKP rs1132173C > T, PDK2 rs3785921G > A) were significantly associated with survival outcomes in multivariate analyses...
October 21, 2016: Scientific Reports
Farhad Jahanfar, Akbar Hasani, Dariush Shanebandi, Mohammad Rahmati, Hamed Hamishehkar
Purpose: In this study the effectiveness of encapsulating of 5-azacytidine into the lipid nanoparticles was investigated and in vitro effect of encapsulated 5-azacytidine studied on MCF-7 cell lines Methods: 5-azacytidine -loaded solid lipid nanoparticles were produced by double emulsification (w/o/w) method by using stearic acid as lipid matrix, soy lecithin and poloxamer 407 as surfactant and co-surfactant respectively. Particle size, zeta potential, surface morphology, entrapment efficiency and kinetic of drug release were studied...
September 2016: Advanced Pharmaceutical Bulletin
Scott Whitehouse, Pei-Lin Chen, Anna L Greenshields, Mat Nightingale, David W Hoskin, Karen Bedard
BACKGROUND: Many plant-derived chemicals have been studied for their potential benefits in ailments including inflammation, cancer, neurodegeneration, and cardiovascular disease. The health benefits of phytochemicals are often attributed to the targeting of reactive oxygen species (ROS). However, it is not always clear whether these agents act directly as antioxidants to remove ROS, or whether they act indirectly by blocking ROS production by enzymes such as NADPH oxidase (NOX) enzymes, or by influencing the expression of cellular pro- and anti- oxidants...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
K Bilmin, T Kujawska, W Secomski, A Nowicki, P Grieb
Sonodynamic therapy (SDT) is a promising technique based on the ability of certain substances, called sonosensitizers, to sensitize cancer cells to non-thermal effects of low-energy ultrasound waves, allowing their destruction. Sonosensitization is thought to induce cell death by direct physical effects such as cavitation and acoustical streaming as well as by complementary chemical reactions generating oxygen free radicals. One of the promising sonosensitizers is 5-aminolevulinic acid (ALA) which upon selective uptake by cancer cells is metabolized and accumulated as protoporphyrin IX...
2016: Folia Neuropathologica
Zhu Zeng, Rui Yu, Fanglei Zuo, Bo Zhang, Deju Peng, Huiqin Ma, Shangwu Chen
Exendin-4, a glucagon-like protein-1 (GLP-1) receptor agonist, is an excellent therapeutic peptide drug for type 2 diabetes due to longer lasting biological activity compared to GLP-1. This study explored the feasibility of using probiotic Lactobacillus paracasei as an oral vector for recombinant exendin-4 peptide delivery, an alternative to costly chemical synthesis and inconvenient administration by injection. L. paracasei transformed with a plasmid encoding the exendin-4 gene (L. paracasei L14/pMG76e-exendin-4) with a constitutive promotor was successfully constructed and showed efficient secretion of exendin-4...
2016: PloS One
Huei-Tzu Chien, Sou-De Cheng, Wen-Yu Chuang, Chun-Ta Liao, Hung-Ming Wang, Shiang-Fu Huang
Amplification of 11q13.3 is a frequent event in human cancers, including head and neck squamous cell carcinoma. This chromosome region contains several genes that are potentially cancer drivers, including FADD (Fas associated via death domain), an apoptotic effector that was previously identified as a novel oncogene in laryngeal/pharyngeal cancer. This study was designed to explore the role of FADD in oral squamous cell carcinomas (OSCCs) samples from Taiwanese patients, by assessing copy number variations (CNVs) and protein expression and the clinical implications of these factors in 339 male OSCCs...
2016: PloS One
Marta Dec, Andrzej Puchalski, Anna Nowaczek, Andrzej Wernicki
This study was conducted to identify and evaluate the antimicrobial activity of some Lactobacillus isolates of chicken origin. Among 90 isolates 14 Lactobacillus species were distinguished using MALDI-TOF mass spectrometry and 16S-ARDRA. The dominant species was L. salivarius (34.4%), followed by L. johnsonii (23.3%), L. crispatus (13.3%) and L. reuteri (11.1%). All lactobacilli were screened for antimicrobial activity against wild-type strains of Salmonella enterica, Escherichia coli, and Clostridium perfringens...
March 2016: International Microbiology: the Official Journal of the Spanish Society for Microbiology
Annette Romanski, Gesine Bug
Histone deacetylase (HDAC) inhibitors are promising drugs. These agents lead to growth inhibition, cell cycle arrest, premature senescence, and apoptosis of malignant cells. Aim of our studies was to determine the efficacy of HDAC inhibitors on the clinically most relevant population of human leukemic progenitor cells in vitro. We here present stroma-free long-term cultures (LTC) of primary acute myeloid leukemia (AML) cells as a useful system for drug sensitivity testing in functional assays. AML-LTC are established by isolating mononuclear cells from peripheral blood samples of AML patients followed by selection of CD34(+) progenitor cells...
2017: Methods in Molecular Biology
Julia Angélica Gonçalves Silveira, Mirella Lauria D'Elia, Isabela de Oliveira Avelar, Lara Ribeiro de Almeida, Hudson Andrade Dos Santos, Danielle Ferreira de Magalhães Soares, Múcio Flávio Barbosa Ribeiro, Walter Dos Santos Lima, Roselene Ecco
An adult free-ranged female maned wolf was rescued from a periurban area subject to anthropogenic disturbances in the Minas Gerais, Brazil. The animal presented poor body condition and anemia. The clinical condition rapidly deteriorated culminating in dead and a necropsy was performed. The main gross lesions were marked anemia and blood content in the intestines accompanied by many types of parasites. The protozoa Rangelia vitalii was identified by histopathological analysis predominantly within the cytoplasm of endothelial cells of capillaries of the small intestine...
December 2016: International Journal for Parasitology. Parasites and Wildlife
Farideh Mohammadian, Alireza Abhari, Hassan Dariushnejad, Alireza Nikanfar, Younes Pilehvar-Soltanahmadi, Nosratollah Zarghami
BACKGROUND: Recently, Chrysin, as a flavone, has revealed cancer chemo-preventive activity. The present experiment utilized the PLGA-PEG-chrysin complex, and free chrysin, to evaluation of the expression of miR-22, miR-34a and miR-126 in human gastric cell line. OBJECTIVES: The purpose of this study was to examine whether nano encapsulating chrysin improves the anti-cancer effect of free chrysin on AGS human gastric cell line. METHODS: Properties of the chrysin encapsulated in PLGA-PEG nanoparticles were investigated by SEM, H NMR, and FTIR...
August 2016: Iranian Journal of Cancer Prevention
Lavanya Kakarla, Suresh Babu Katragadda, Ashok K Tiwari, K Srigiridhar Kotamraju, K Madhusudana, D Anand Kumar, Mahendran Botlagunta
BACKGROUND: Cyperus scariosus R. Br and Cyperus rotundus L are widely used in ayurvedic preparation for the treatment of diabetes and other diseases. The early literature, so far, does not indicate the presence of any bioactive principle isolated from these plants. OBJECTIVE: To identify free radical scavenging, anti-diabetic and anti- inflammatory principles from these two species. MATERIALS AND METHODS: The bioassay guided fractionation and isolation of active constituents was done by chromatographic techniques...
July 2016: Pharmacognosy Magazine
Shekhar Dethe, M Deepak, Amit Agarwal
BACKGROUND: Bacopa monnieri (L.) Wettst., commonly known as Brahmi, is renowned in Indian traditional system for its potent memory enhancing activity, which has been validated by various scientific studies. OBJECTIVE: The objective of this study was to understand the molecular mechanism of memory enhancing activity of BacoMind(®) (BM), a standardized extract of B. monnieri. MATERIALS AND METHODS: BM was screened in vitro in a panel of cell-free and receptor-transfected cell assays...
July 2016: Pharmacognosy Magazine
Sarah Hrebien, Ben O'Leary, Matthew Beaney, Gaia Schiavon, Charlotte Fribbens, Amarjit Bhambra, Richard Johnson, Isaac Garcia-Murillas, Nicholas Turner
Circulating tumor DNA (ctDNA) analysis has the potential to allow non-invasive analysis of tumor mutations in advanced cancer. In this study we assessed the reproducibility of digital PCR (dPCR) assays of circulating tumor DNA in a cohort of patients with advanced breast cancer and assessed delayed plasma processing using cell free DNA preservative tubes. We recruited a cohort of 96 paired samples from 71 women with advanced breast cancer who had paired blood samples processed either immediately or delayed in preservative tubes with processing 48-72 hours after collection...
2016: PloS One
Stephan Brauckmann, Katharina Effenberger-Neidnicht, Herbert de Groot, Michael Nagel, Christian Mayer, Jürgen Peters, Matthias Hartmann
While hemolysis in patients with sepsis is associated with increased mortality its mechanisms are unknown and Toll-like receptor (TLR)-4 mediated effects, complement-mediated hemolysis, or direct cell membrane effects are all conceivable mechanisms. In this study, we tested the hypotheses that toxic lipopolysaccharide (LPS) as well as non-toxic RS-LPS evokes hemolysis (1) by direct membrane effects, and (2) independent of the complement system and TLR-4 activation. We found, that incubation with LPS resulted in a marked time and concentration dependent increase of free hemoglobin concentration and LDH activity in whole blood and washed red cells...
October 19, 2016: Scientific Reports
Yoon Jin Cha, Hye Ryun Kim, Hyo Sup Shim
BACKGROUND: Clinical outcomes of anaplastic lymphoma kinase (ALK)-rearranged non-small cell lung cancer according to ALK fusion variants are not clear. We aimed to investigate the prevalence of ALK fusion variants and to compare clinical outcomes according to ALK fusion variants. METHODS: A retrospective analysis was conducted on patients with advanced ALK-rearranged adenocarcinoma treated with chemotherapy and ALK inhibitors. ALK rearrangement was identified by fluorescence in situ hybridization and confirmed by immunohistochemistry...
October 19, 2016: Journal of Translational Medicine
Steven C L Ho, Esther Y C Koh, Benjamin P C Soo, Mariati, Sheng-Hao Chao, Yuansheng Yang
BACKGROUND: Methylated CpG dinucleotides in promoters are associated with the loss of gene expression in recombinant Chinese hamster ovary (CHO) cells during large-scale commercial manufacturing. We evaluated a promoter devoid of CpG dinucleotides, CpGfree, in parallel with a similar CpG containing promoter, CpGrich, for their ability to maintain the expression of recombinant enhanced green fluorescent protein (EGFP) after 8 weeks of culturing. RESULTS: While the promoters gave similar transient expression levels, CpGfree clones had significantly higher average stable expression possibly due to increased resistance to early silencing during integration into the chromosome...
October 18, 2016: BMC Biotechnology
Junqing Wang, Yunyun Zhou, Xiaochun Fei, Xunhua Chen, Zhenggang Zhu
The Wnt/β-catenin signaling pathway dominates numerous cellular processes including cell proliferation, differentiation, and epithelial-mesenchymal transition, which play a crucial role in human cancer malignancies. Regulator of G-protein signaling 3 (RGS3) is a pivotal molecule involved in the Wnt/β-catenin signaling pathway, which is worthy of intensive research as a potential target in cancer treatment. In this study, we found that RGS3 is significantly upregulated in gastric cancer (GC) tumor samples compared with normal samples from the analysis of two independent GC mRNA microarray datasets in the NCBI public database...
October 14, 2016: Anti-cancer Drugs
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"