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https://www.readbyqxmd.com/read/28735334/detection-of-polioviruses-in-sewage-using-cell-culture-and-molecular-methods
#1
Agnieszka Figas, Magdalena Wieczorek, Bogumiła Litwińska, Włodzimierz Gut
The work presented here demonstrates the utility of a two-step algorithm for environmental poliovirus surveillance based on: preselection of sewage samples tested for the presence of enteroviral genetic material-RT-PCR assay and detection of infectious viruses by cell culture technique (L20B for polioviruses and RD for polio and other non-polio enteroviruses). RD and L20B cell lines were tested to determine their sensitivity for isolation of viruses from environmental samples (sewage). Finally, we wanted to determine if sewage concentration affects the results obtained for RT-PCR and cell cultures...
January 2, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735290/membrane-tethered-metalloproteinase-expressed-by-vascular-smooth-muscle-cells-limits-the-progression-of-proliferative-atherosclerotic-lesions
#2
Richard H Barnes, Takeshi Akama, Miina K Öhman, Moon-Sook Woo, Julian Bahr, Stephen J Weiss, Daniel T Eitzman, Tae-Hwa Chun
BACKGROUND: The MMP (matrix metalloproteinase) family plays diverse and critical roles in directing vascular wall remodeling in atherosclerosis. Unlike secreted-type MMPs, a member of the membrane-type MMP family, MT1-MMP (membrane-type 1 MMP; MMP14), mediates pericellular extracellular matrix degradation that is indispensable for maintaining physiological extracellular matrix homeostasis. However, given the premature mortality exhibited by MT1-MMP-null mice, the potential role of the proteinase in atherogenesis remains elusive...
July 22, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28734490/preconception-peer-educators-exploratory-outreach-to-the-bahamas-a-foundation-for-an-international-service-learning-initiative
#3
Gail H Wade, Mary B DeLashmutt, Anne DeCaire, Emily Boyce
A service learning outreach was undertaken to assess the feasibility of adapting the Preconception Peer Educator (PPE) program to Bahamian youth. By focusing on preconception health, the PPE program is a logical step toward ensuring age sensitive and developmentally appropriate education to improve potential birth outcomes and decrease infant mortality rates (IMR) associated with the complex societal problems on Grand Bahama. Concerned with the prevalence of adolescent pregnancy, lack of social support, depression, and failure to complete high school, a nurse midwife invited PPEs from a School of Nursing to meet with stakeholders to introduce the PPE program to Bahamian youth...
July 2017: Journal of Professional Nursing: Official Journal of the American Association of Colleges of Nursing
https://www.readbyqxmd.com/read/28733605/genexpert-mtb-rif-assay-in-the-diagnosis-of-urinary-tuberculosis-from-urine-specimens
#4
Yu Pang, Yuanyuan Shang, Jie Lu, Qian Liang, Lingling Dong, Yunxu Li, Liping Zhao, Guanglu Jiang, Hairong Huang
Conventional bacteriological methods are not generally helpful in diagnosing urinary tuberculosis (UTB). GeneXpert is endorsed for the detection of pulmonary tuberculosis, whereas the data on its utility for urine specimens is limited. In this study, we aimed to evaluate its performance on urine specimens in a country with high TB incidence. A total of 163 suspected UTB patients were consecutively enrolled in the analysis, including 37 (22.7%) culture-positive and 44 (27.0%) clinically diagnosed UTB cases. Compared with conventional culture, the sensitivity of GeneXpert (94...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733350/adiponectin-limits-differentiation-and-trophoblast-invasion-in-human-endometrial-cells
#5
Fabien Duval, Esther Dos Santos, Hadia Moindjie, Valérie Serazin, Nelly Swierkowski-Blanchard, François Vialard, Marie-Noëlle Dieudonné
Successful human embryo implantation requires a proper differentiation of endometrial stromal cells (ESCs) into decidual cells, during a process called decidualization. ESCs express specific molecules, as prolactin, insulin-like growth factor-binding protein-1 (IGFBP-1), and connexin-43. Decidual cells are also involved in the control of trophoblast invasion, by secreting various factors, as matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs). Adiponectin is an adipokine with insulin-sensitizing, anti-inflammatory, and anti-proliferative effects...
July 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28731631/substrate-curvature-restricts-spreading-and-induces-differentiation-of-human-mesenchymal-stem-cells
#6
Sang Joo Lee, Shengyuan Yang
While cells attach, spread, migrate, proliferate, and differentiate in three-dimensional (3D) micromechanical environments, the mechanical factors of these environments influence the shapes, sizes, and adhesion forces of the cells. Here, we culture human mesenchymal stem cells (hMSCs) on a unique class of curvature-defined substrates, micro glass ball embedded polyacrylamide gels, prepared with an improved protocol, and we investigate the spreading responses of the hMSCs on the glass balls to study the effects of substrate curvature on the spreading of hMSCs...
July 21, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28731463/peroxisomes-protect-lymphoma-cells-from-hdac-inhibitor-mediated-apoptosis
#7
Michael S Dahabieh, ZongYi Ha, Erminia Di Pietro, Jessica N Nichol, Alicia M Bolt, Christophe Goncalves, Daphné Dupéré-Richer, Filippa Pettersson, Koren K Mann, Nancy E Braverman, Sonia V Del Rincón, Wilson H Miller
Peroxisomes are a critical rheostat of reactive oxygen species (ROS), yet their role in drug sensitivity and resistance remains unexplored. Gene expression analysis of clinical lymphoma samples suggests that peroxisomes are involved in mediating drug resistance to the histone deacetylase inhibitor (HDACi) Vorinostat (Vor), which promotes ROS-mediated apoptosis. Vor augments peroxisome numbers in cultured lymphoma cells, concomitant with increased levels of peroxisomal proteins PEX3, PEX11B, and PMP70. Genetic inhibition of peroxisomes, using PEX3 knockdown, reveals that peroxisomes protect lymphoma cells against Vor-mediated cell death...
July 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28731324/using-infrared-spectroscopy-and-multivariate-analysis-to-detect-antibiotics-resistant-escherichia-coli-bacteria
#8
Uraib Sharaha, Eladio Rodriguez-Diaz, Klaris Riesenberg, Irving J Bigio, Mahmoud Huleihel, Ahmad Salman
Bacterial pathogens are one of the primary causes of human morbidity worldwide. Historically, antibiotics have been highly effective against most bacterial pathogens; however, the increasing resistance of bacteria to a broad spectrum of commonly used antibiotics has become a global health-care problem. Early and rapid determination of bacterial susceptibility to antibiotics has become essential in many clinical settings, and, sometimes, can save lives. Currently classical procedures require at least 48 hours for determining bacterial susceptibility, which can constitute a life-threatening delay for effective treatment...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28730697/impact-of-simultaneous-glutamate-dehydrogenase-gdh-and-toxin-a-b-rapid-immunoassay-on-clostridium-difficile-diagnosis-and-treatment-in-hospitalized-patients-with-antibiotic-associated-diarrhea-in-a-university-hospital-of-brazil
#9
Guilherme Grossi Lopes Cançado, Rodrigo Otávio Silveira Silva, Amanda Pontes Nader, Francisco Carlos Faria Lobato, Eduardo Garcia Vilela
BACKGROUND: Clostridium difficile is a major cause of health care-associated infection, but disagreement between diagnostic tests is an ongoing barrier to clinical decision making. Conventional enzyme immunoassay (EIA) for toxin detection is currently the most frequently used technique for CDI diagnosis, but its low sensitivity makes the development of an alternative strategy necessary for improving the diagnosis in developing countries. METHODS: Between years 2011 and 2015, 154 stool samples from patients with antibiotic-associated diarrhea were examined by toxigenic culture (TC) and EIA for the diagnosis of CDI...
July 20, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28730499/target-inhibition-maps-based-on-responses-to-kinase-inhibitors
#10
Noah Berlow, Ranadip Pal
The prediction of tumor sensitivity to targeted drugs remains a major challenge in the design of optimal therapeutic strategies. This chapter presents a computational modeling approach to infer target inhibition maps based on responses of the tumor culture to a range of kinase inhibitors. The kinase inhibition profiles of the targeted drugs and the functional responses are utilized to infer potential tumor proliferation circuits that can assist in generation of synergistic drug combinations.
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28730310/optical-biosensor-optimized-for-continuous-in-line-glucose-monitoring-in-animal-cell-culture
#11
Mircea Tric, Mario Lederle, Lisa Neuner, Igor Dolgowjasow, Philipp Wiedemann, Stefan Wölfl, Tobias Werner
Biosensors for continuous glucose monitoring in bioreactors could provide a valuable tool for optimizing culture conditions in biotechnological applications. We have developed an optical biosensor for long-term continuous glucose monitoring and demonstrated a tight glucose level control during cell culture in disposable bioreactors. The in-line sensor is based on a commercially available oxygen sensor that is coated with cross-linked glucose oxidase (GOD). The dynamic range of the sensor was tuned by a hydrophilic perforated diffusion membrane with an optimized permeability for glucose and oxygen...
July 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28730135/clinical-characteristics-and-ultrasonographic-findings-of-acute-bacterial-enterocolitis-in-children
#12
Peter Chun, Taek Jin Lim, Eun Ha Hwang, Sang Wook Mun, Yeoun Joo Lee, Jae Hong Park
PURPOSE: This study clarified the bacterial pathogens currently causing acute infectious enterocolitis (AIE) in children and evaluated the clinical characteristics and ultrasonographic findings according to the different pathogens. METHODS: Medical records regarding age, sex, clinical symptoms, laboratory data, identified enteropathogens, ultrasonographic findings, treatment, and outcome of 34 patients who were diagnosed with AIE via stool examination using multiplex polymerase chain reaction (PCR) or culture, were retrospectively reviewed...
June 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28729840/cardiac-subtype-specific-modeling-of-kv1-5-ion-channel-deficiency-using-human-pluripotent-stem-cells
#13
Maike Marczenke, Ilaria Piccini, Isabella Mengarelli, Jakob Fell, Albrecht Röpke, Guiscard Seebohm, Arie O Verkerk, Boris Greber
The ultrarapid delayed rectifier K(+) current (IKur), mediated by Kv1.5 channels, constitutes a key component of the atrial action potential. Functional mutations in the underlying KCNA5 gene have been shown to cause hereditary forms of atrial fibrillation (AF). Here, we combine targeted genetic engineering with cardiac subtype-specific differentiation of human induced pluripotent stem cells (hiPSCs) to explore the role of Kv1.5 in atrial hiPSC-cardiomyocytes. CRISPR/Cas9-mediated mutagenesis of integration-free hiPSCs was employed to generate a functional KCNA5 knockout...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28729771/microarray-gene-expression-analysis-of-chemosensitivity-for-docetaxel-cisplatin-and-5-fluorouracil-tpf-combined-chemotherapeutic-regimen-in-hypopharyngeal-squamous-cell-carcinoma
#14
Meng Lian, Haizhou Wang, Jugao Fang, Jie Zhai, Ru Wang, Xixi Shen, Yifan Yang, Zhihong Ma, Honggang Liu
OBJECTIVE: To screen out a set of candidate genes which could help to determine whether patients with hypopharyngeal squamous cell carcinoma (HSCC) could benefit from docetaxel, cisplatin and 5-fluorouracil (TPF) induction chemotherapy. METHODS: Gene-expression profiles in 12 TPF-sensitive patients were compared to 9 resistant controls by microarray analysis. Subsequently, expression levels of potential biomarkers in chemosensitive cell line FaDu after TPF treatment were observed by quantitative real-time polymerase chain reaction (qRT-PCR)...
June 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/28729628/a-new-approach-for-ratiometric-in-vivo-calcium-imaging-of-microglia
#15
Bianca Brawek, Yajie Liang, Daria Savitska, Kaizhen Li, Natalie Fomin-Thunemann, Yury Kovalchuk, Elizabeta Zirdum, Johan Jakobsson, Olga Garaschuk
Microglia, resident immune cells of the brain, react to the presence of pathogens/danger signals with a large repertoire of functional responses including morphological changes, proliferation, chemotaxis, production/release of cytokines, and phagocytosis. In vitro studies suggest that many of these effector functions are Ca(2+)-dependent, but our knowledge about in vivo Ca(2+) signalling in microglia is rudimentary. This is mostly due to technical reasons, as microglia largely resisted all attempts of in vivo labelling with Ca(2+) indicators...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729206/antimicrobial-resistance-patterns-of-gram-negative-bacteria-isolated-from-bloodstream-infections-in-an-iranian-referral-pediatric-hospital-a-six-year-study
#16
Shima Mahmoudi, Masoumeh Mahzari, Maryam Banar, Babak Pourakbari, Mohammad Taghi Haghi Ashtiani, Mohsen Mohammadi, Sepideh Keshavarz Valian, Setareh Mamishi
INTRODUCTION: Bloodstream infections (BSIs) are considered as a major cause of morbidity and mortality in children all over the world. The aim of this study was to describe the epidemiology and antimicrobial resistance patterns of Gram-negative bacteria (GNB) isolated from bloodstream infections (BSIs) in children admitted to the Children Medical Center Hospital (CMC), Tehran, Iran. METHODS: Clinical and microbiological data of the patients with positive blood cultures was collected from March 2011 to September 2016...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729205/antimicrobial-susceptibility-of-clostridium-difficile-isolates-in-israel
#17
Linda Tkhawkho, Orna Nitzan, Nina Pastukh, Diana Brodsky, Karen Jackson, Avi Peretz
OBJECTIVES: An increase of Clostridium difficile isolates with reduced susceptibility to various antimicrobial agents has been observed, including isolates that are non-susceptible to antibiotics that are routinely used for treatment of C. difficile, such as vancomycin and metronidazole. We determined the susceptibility rates of C. difficile isolates from hospitals in northern Israel to various antibiotics including tigecycline, which was not previously reported from Israel. METHODS: A total of 81 stool samples were collected from three hospitals in northern Israel from patients with C...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729202/high-proportion-of-modern-genotypes-of-m-tuberculosis-and-their-affinity-with-drug-resistance-in-northern-region-of-india
#18
Sunil Kumar Dhatwalia, Rakesh Yadav, Digambar Behera, Harsimran Kaur, Manoj Kumar, Sunil Sethi
OBJECTIVES: Comparative genomics on the basis of TbD1 deletion has differentiated the members of Mycobacterium tuberculosis complex (MTC) in two major genogroups. They exhibit differential distribution and virulence potential. The present study was carried out to see the proportion of these genogroups and their association with drug resistance. METHODS: The drug resistance pattern of 205 culture positive cases of M. tuberculosis and their relation with TbD1 deletion was analysed from the tertiary care centre...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28728769/social-inclusion-of-children-with-down-syndrome-jewish-and-muslim-mothers-knowledge-attitudes-beliefs-and-behavioral-intentions
#19
Sivia Barnoy, Anna Biton, Michal Itzhaki
PURPOSE: The current study examined mothers' knowledge, beliefs, attitudes, and intention to socially integrate children with Down syndrome (DS) in the family, with children without disabilities and school system. DESIGN AND METHODS: A questionnaire based on a descriptive, cross-sectional design was administered to Jewish and Muslim mothers. The questionnaire included demographics, knowledge, beliefs, attitudes, and intention to integrate children with DS. Analysis included a regression test of intention to integrate children with DS and a one-way ANOVA for differences between Jewish and Muslim mothers...
July 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28728591/antimicrobial-susceptibility-pattern-of-clinical-isolates-of-burkholderia-pseudomallei-in-bangladesh
#20
Subarna Dutta, Sabah Haq, Mohammad Rokibul Hasan, Jalaluddin Ashraful Haq
BACKGROUND: Melioidosis an infectious disease, caused by a Gram negative bacterium called Burkholderia pseudomallei, is endemic in Bangladesh. This organism is sensitive to limited number of antimicrobial agents and need prolonged treatment. There is no comprehensive data on the antimicrobial susceptibility profile of B. pseudomallei isolated in Bangladesh over last several years. The present study aimed to determine the antimicrobial susceptibility pattern of B. pseudomallei isolated in a tertiary care hospital of Dhaka city from 2009 to 2015...
July 20, 2017: BMC Research Notes
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