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https://www.readbyqxmd.com/read/27933701/ccr2-mediates-helicobacter-pylori-induced-immune-tolerance-and-contributes-to-mucosal-homeostasis
#1
Xia Sun, Min Zhang, Mohamad El-Zaatari, Gray B Huffnagle, John Y Kao
BACKGROUND: We previously demonstrated that H. pylori infection leads to increased induction of regulatory T cells in local and systemic immune compartments. Here, we investigate the role of CCR2 in the tolerogenic programing of dendritic cells in a mouse model of H. pylori infection. MATERIALS AND METHODS: CCR2 deficient (CCR2KO) mice and wild-type (Wt) mice infected with H. pylori SS1 strain were analyzed by qPCR and FACS analysis. In vitro, bone marrow-derived DC on day 6 from CCR2KO and Wt mice cocultured with or without H...
December 8, 2016: Helicobacter
https://www.readbyqxmd.com/read/27933078/citrus-leprosis-virus-c-infection-results-in-hypersensitive-like-response-suppression-of-the-ja-et-plant-defense-pathway-and-promotion-of-the-colonization-of-its-mite-vector
#2
Gabriella D Arena, Pedro L Ramos-González, Maria A Nunes, Marcelo Ribeiro-Alves, Luis E A Camargo, Elliot W Kitajima, Marcos A Machado, Juliana Freitas-Astúa
Leprosis is a serious disease of citrus caused by Citrus leprosis virus C (CiLV-C, genus Cilevirus) whose transmission is mediated by false spider mites of the genus Brevipalpus. CiLV-C infection does not systemically spread in any of its known host plants, thus remaining restricted to local lesions around the feeding sites of viruliferous mites. To get insight into this unusual pathosystem, we evaluated the expression profiles of genes involved in defense mechanisms of Arabidopsis thaliana and Citrus sinensis upon infestation with non-viruliferous and viruliferous mites by using reverse-transcription qPCR...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27932763/-effect-of-vasoactive-intestinal-peptide-on-defecation-and-vip-camp-pka-aqp3-signaling-pathway-%C3%A2-in-rats-with-constipation
#3
Yongxue Zhou, Yujin Wang, Hong Zhang, Shuguang Yan, Bin Wang, Pei Xie
To observe the effect of vasoactive intestinal peptide (VIP) on the metabolism of intestinal fluid and cyclic AMP protein kinase A signaling pathway (cAMP-PKA) and water channel protein 3 (AQP3) in rats with constipation, and to explore the mechanism of VIP in the treatment of constipation.
 Methods: A total of 45 healthy adult rats were randomly divided into a control group, a model group, a model +VIP group. After 4 weeks of VIP treatment, the first black stool time were examined with the ink gastric method; the water content in feces was calculated; the morphological changes in colonic tissues were observed by HE staining...
November 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/27932085/development-of-a-sensitive-and-false-positive-free-pma-qpcr-viability-assay-to-quantify-vbnc-escherichia-coli-and-evaluate-disinfection-performance-in-wastewater-effluent
#4
Richard Kibbee, Banu Örmeci
The detection and quantification of viable Escherichia coli cells in wastewater treatment plant effluent is very important as it is the main disinfection efficacy parameter for assessing its public health risk and environmental impact. The aim of this study was to develop a sensitive and false-positive free propidium monoazide-quantitative polymerase chain reaction (PMA-qPCR) assay to quantify the viable but non-culturable (VBNC) E. coli present in secondary wastewater effluent after chlorine disinfection. The qPCR target was the E...
December 5, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27931969/human-papillomaviruses-in-colorectal-cancers-a-case-control-study-in-western-patients
#5
Lucine Vuitton, Carine Jaillet, Elise Jacquin, Franck Monnien, Marine Heberle, Maria I Mihai, Catherine Lassabe, Johnny Raffoul, Marc Puyraveau, Zaher Lakkis, Najib Lamfichekh, Alain Picard, Jean-Luc Prétet, Christiane Mougin, Séverine Valmary-Degano
BACKGROUND: Colorectal cancer (CRC) is one of the most common cancers. As in other cancer locations, the involvement of human papillomaviruses (HPV) has been suggested but remains highly debated with wide differences among reported prevalence of HPV infection in CRCs. AIM: To determine the actual prevalence of high risk HPV16 and 18 in a large case-control study. METHODS: CRC specimens were used for analysis of both tumor and distant healthy tissue...
November 14, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/27931227/epigenetics-of-amphetamine-induced-sensitization-hdac5-expression-and-microrna-in-neural-remodeling
#6
Philip K Liu, Christina H Liu
BACKGROUND: Histone deacetylase (HDAC) activities modify chromatin structure and play a role in learning and memory during developmental processes. Studies of adult mice suggest HDACs are involved in neural network remodeling in brain repair, but its function in drug addiction is less understood. We aimed to examine in vivo HDAC5 expression in a preclinical model of amphetamine-induced sensitization (AIS) of behavior. We generated specific contrast agents to measure HDAC5 levels by in vivo molecular contrast-enhanced (MCE) magnetic resonance imaging (MRI) in amphetamine-naïve mice as well as in mice with AIS...
December 8, 2016: Journal of Biomedical Science
https://www.readbyqxmd.com/read/27930944/high-throughput-sequencing-in-acute-lymphoblastic-leukemia-follow-up-of-minimal-residual-disease-and-emergence-of-new-clones
#7
Mikaël Salson, Mathieu Giraud, Aurélie Caillault, Nathalie Grardel, Nicolas Duployez, Yann Ferret, Marc Duez, Ryan Herbert, Tatiana Rocher, Shéhérazade Sebda, Sabine Quief, Céline Villenet, Martin Figeac, Claude Preudhomme
Minimal residual disease (MRD) is known to be an independent prognostic factor in patients with acute lymphoblastic leukemia (ALL). High-throughput sequencing (HTS) is currently used in routine practice for the diagnosis and follow-up of patients with hematological neoplasms. In this retrospective study, we examined the role of immunoglobulin/T-cell receptor-based MRD in patients with ALL by HTS analysis of immunoglobulin H and/or T-cell receptor gamma chain loci in bone marrow samples from 11 patients with ALL, at diagnosis and during follow-up...
November 21, 2016: Leukemia Research
https://www.readbyqxmd.com/read/27930727/airway-microbiota-in-bronchoalveolar-lavage-fluid-from-clinically-well-infants-with-cystic-fibrosis
#8
Theresa A Laguna, Brandie D Wagner, Cynthia B Williams, Mark J Stevens, Charles E Robertson, Cole W Welchlin, Catherine E Moen, Edith T Zemanick, Jonathan K Harris
BACKGROUND: Upper airway cultures guide the identification and treatment of lung pathogens in infants with cystic fibrosis (CF); however, this may not fully reflect the spectrum of bacteria present in the lower airway. Our objectives were to characterize the airway microbiota using bronchoalveolar lavage fluid (BALF) from asymptomatic CF infants during the first year of life and to investigate the relationship between BALF microbiota, standard culture and clinical characteristics. METHODS: BALF, nasopharyngeal (NP) culture and infant pulmonary function testing data were collected at 6 months and one year of age during periods of clinical stability from infants diagnosed with CF by newborn screening...
2016: PloS One
https://www.readbyqxmd.com/read/27928597/effects-of-bacillus-cereus-endospores-on-free-living-protist-growth
#9
Susana S Santos, Niels Bohse Hendriksen, Hans Henrik Jakobsen, Anne Winding
We studied the predator-prey interactions between heterotrophic protists and endospores of Bacillus cereus group bacteria, in order to gain insight on survival and dispersal of B. cereus endospores in the environment. It has been hypothesised that the spore stage protects against digestion by predating protists. Therefore, experiments were carried out to investigate the impact of B. cereus endospores and vegetative cells, as the only food source, on individual amoeboid, flagellated and ciliated protists. The presence of fluorescent-labelled intracellular bacteria confirmed that B...
December 7, 2016: Microbial Ecology
https://www.readbyqxmd.com/read/27928553/proliferation-of-the-biocontrol-agent-fusarium-oxysporum-f-sp-strigae-and-its-impact-on-indigenous-rhizosphere-fungal-communities-in-maize-under-different-agro-ecologies
#10
Judith Zimmermann, Mary K Musyoki, Georg Cadisch, Frank Rasche
Our objectives were to (1) monitor the proliferation of the biocontrol agent (BCA) Fusarium oxysporum f. sp. strigae strain "Foxy-2", an effective soil-borne BCA against the parasitic weed Striga hermonthica, in the rhizosphere of maize under different agro-ecologies, and (2) investigate its impact on indigenous rhizosphere fungal community abundance and composition. Field experiments were conducted in Busia and Homa Bay districts in western Kenya during two cropping seasons to account for effects of soil type, climate, growth stage and seasonality...
June 2016: Rhizosphere
https://www.readbyqxmd.com/read/27928106/cell-death-affected-by-dental-alloys-modes-and-mechanisms
#11
Yu Pan, Lei Jiang, Honglei Lin, Hui Cheng
Previous reports have demonstrated that ions released from dental alloys might cause cytotoxicity. However, how dental alloys influence the organism has not been extensively studied. In order to make it clear, the cytotoxic effect of four dental alloys on L929 cells was evaluated by flow cytometry (FCM) and Real-time quantitative PCR assay (Real-time qPCR) to identify the cell death mode and its biological mechanism. The cells were treated with the leach liquors of cobalt-chromium (Co-Cr), commercially pure titanium (CP-Ti), palladium-based (Pd-based) and gold-platinum (Au-Pt) alloys for 48 and 72 h...
December 6, 2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27928076/rapid-detection-of-mycobacterium-tuberculosis-strains-resistant-to-isoniazid-and-or-rifampicin-standardization-of-multiplex-polymerase-chain-reaction-analysis
#12
Jimena Collantes, Francesca Barletta Solari, Leen Rigouts
Drug susceptibility testing using molecular techniques can enhance the identification of drug-resistant Mycobacterium tuberculosis Two multiplex real-time polymerase chain reaction (qPCR) assays were developed to detect the most common resistance-associated mutations to isoniazid (katGS315T, inhA-15C → T), and rifampicin (rpoBH526Y and rpoBS531L). To assess the species specificity of the qPCR, we selected 31 nontuberculous mycobacteria (NTM) reference strains belonging to 17 species from the public collection of mycobacterial cultures (BCCM/ITM)...
December 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27927916/field-validation-of-sybr%C3%A2-green-and-taqman%C3%A2-based-real-time-pcr-using-biopsy-and-swab-samples-to-diagnose-american-tegumentary-leishmaniasis-in-a-leishmania-v-braziliensis-endemic-area
#13
Ciro Martins Gomes, Mariana Vicente Cesetti, Natália Aparecida de Paula, Sebastián Vernal, Gaurav Gupta, Raimunda Nonata Ribeiro Sampaio, Ana Maria Roselino
The precise diagnosis of American tegumentary leishmaniasis (ATL) is an essential task due to the disease's associated morbidity. A non-invasive, extremely sensitive and highly specific exam is critical, particularly for mucosal leishmaniasis (ML), in which a low parasite quantity is expected. We aimed to compare the diagnostic accuracy of swab and biopsy sample analysis using SYBR® Green- and TaqMan®-based real-time polymerase chain reaction (qPCR) assays with that of a composite reference standard consisting of the Montenegro skin test, serology, histopathology, smears, culture and conventional PCR...
December 7, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27927168/phosphodiesterases-in-non-neoplastic-appearing-colonic-mucosa-from-patients-with-colorectal-neoplasia
#14
Badar Mahmood, Morten Matthiesen Bach Damm, Thorbjørn Søren Rønn Jensen, Marie Balslev Backe, Mattias Salling Dahllöf, Steen Seier Poulsen, Niels Bindslev, Mark Berner Hansen
BACKGROUND: Intracellular signaling through cyclic nucleotides, both cyclic AMP and cyclic GMP, is altered in colorectal cancer. Accordingly, it is hypothesized that an underlying mechanism for colorectal neoplasia involves altered function of phosphodiesterases (PDEs), which affects cyclic nucleotide degradation. Here we present an approach to evaluate the function of selected cyclic nucleotide-PDEs in colonic endoscopic biopsies from non-neoplastic appearing mucosa. METHODS: Biopsies were obtained from patients with and without colorectal neoplasia...
December 7, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27926792/the-transcription-factor-pparalpha-is-overexpressed-and-is-associated-with-a-favourable-prognosis-in-idh-wildtype-primary-glioblastoma
#15
H R Haynes, P White, K M Hares, J Redondo, K C Kemp, W G B Singleton, C L Killick-Cole, J R Stevens, K Garadi, S Guglani, A Wilkins, K M Kurian
AIMS: PPARα agonists are in current clinical use as hypolipidaemic agents and show significant antineoplastic effects in human glioblastoma models. To date however, the expression of PPARα in large-scale glioblastoma data sets has not been examined. We aimed to investigate the expression of the transcription factor PPARα in primary glioblastoma, the relationship between PPARα expression and patients' clinicopathological features and other molecular markers associated with gliomagenesis...
December 7, 2016: Histopathology
https://www.readbyqxmd.com/read/27926510/genetic-and-epigenetic-characterization-of-the-brca1-gene-in-brazilian-women-at-risk-for-hereditary-breast-cancer
#16
Paula Silva Felicio, Matias Eliseo Melendez, Lidia Maria Rebolho Batista Arantes, Ligia Maria Kerr, Dirce Maria Carraro, Rebeca Silveira Grasel, Natalia Campacci, Cristovam Scapulatempo-Neto, Gabriela Carvalho Fernandes, Ana Carolina de Carvalho, Edenir Inêz Palmero
This study aimed to characterize women at-risk for hereditary BC regarding their clinical and molecular characteristics (mutation and methylation in the BRCA1 gene) and correlate the gene expression levels with histopathological, clinical and family history information. BRCA1 real time qPCR was performed to evaluate methylation status and gene expression. The study included 88 women grouped according to the BRCA1 mutational status: 23 BRCA1 mutated, 22 with a Variant of Unknown Significance (VUS) in BRCA1 and 43 BRCA1 WT...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925309/bovine-ovarian-stem-cells-differentiate-into-germ-cells-and-oocyte-like-structures-after-culture-in-vitro
#17
G B de Souza, Jjn Costa, E V da Cunha, Jrs Passos, R P Ribeiro, Mva Saraiva, R van den Hurk, Jrv Silva
Stem cells have been isolated from ovaries, and their ability to differentiate into oocytes in vitro has been demonstrated for mice and human, but not for bovine species. The aims of this study were to isolate germline stem cells from bovine ovaries and to evaluate the effects of bone morphogenetic proteins (BMPs) 2 and 4, and follicular fluid on the differentiation of these stem cells into oocyte-like structures. The ovarian stem cells were isolated and cultured in α-MEM(+) supplemented with BMP2, BMP4 or follicular fluid...
December 7, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27925061/molecular-detection-of-anaplasma-species-in-dogs-in-colombia
#18
Giovanni Vargas-Hernandez, Marcos Rogério André, Diana Maria Cendales, Keyla Carstens Marques de Sousa, Luiz Ricardo Gonçalves, Mariana Cristina Hoeppner Rondelli, Rosangela Zacarias Machado, Mirela Tinucci-Costa
Anaplasma platys and A. phagocytophilum are tick-borne pathogens that parasitize platelets and neutrophils, respectively, of humans and animals. The former is the etiological agent of canine cyclic thrombocytopenia, while the latter is that of canine granulocytic anaplasmosis. This work involved the detection and identification of Anaplasma species in blood samples from dogs in Colombia, using molecular techniques. Between December 2008 and April 2009, blood samples were drawn from the cephalic vein of 91 dogs in the central-western region of Colombia (cities of Bogota, Villavicencio and Bucaramanga) and stored in tubes containing EDTA...
December 1, 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27925060/hepatozoon-canis-and-leishmania-spp-coinfection-in-dogs-diagnosed-with-visceral-leishmaniasis
#19
Fernanda Nazaré Morgado, Amanda Dos Santos Cavalcanti, Luisa Helena de Miranda, Lúcia Helena O'Dwyer, Maria Regina Lucas da Silva, Rodrigo Caldas Menezes, Aurea Virgínia Andrade da Silva, Mariana Côrtes Boité, Elisa Cupolillo, Renato Porrozzi
This study describes the occurrence of dogs naturally co-infected with Hepatozoon canis and two Leishmania species: L. infantum or L. braziliensis. Four dogs serologically diagnosed with Visceral Leishmaniasis were euthanized. Liver and spleen samples were collected for histopathological analysis and DNA isolation. H. canis meronts were observed in tissues from all four dogs. H. canis infection was confirmed by PCR followed by sequencing of a fragment of 18S rRNA gene. Leishmania detection and typing was confirmed by ITS1' PCR-RFLP and parasite burden was calculated using ssrRNA quantitative qPCR...
December 1, 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27924642/development-of-an-rt-qpcr-assay-for-the-specific-detection-of-a-distinct-genetic-lineage-of-the-infectious-bursal-disease-virus
#20
Gonzalo Tomás, Martín Hernández, Ana Marandino, Claudia Techera, Sofia Grecco, Diego Hernández, Alejandro Banda, Yanina Panzera, Ruben Pérez
The infectious bursal disease virus (IBDV) is a major health threat to the world's poultry industry despite intensive controls including proper biosafety practices and vaccination. IBDV (Avibirnavirus, Birnaviridae) is a non-enveloped virus with a bisegmented double-stranded RNA genome. The virus is traditionally classified into classic, variant and very virulent strains, each with different epidemiological relevance and clinical implications. Recently, a novel worldwide spread genetic lineage was described and denoted as distinct (d) IBDV...
December 7, 2016: Avian Pathology: Journal of the W.V.P.A
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