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https://www.readbyqxmd.com/read/28315387/functional-role-of-ompf-and-ompc-porins-in-pathogenesis-of-avian-pathogenic-escherichia-coli
#1
Hassan M A Hejair, Yingchu Zhu, Jiale Ma, Yue Zhang, Zihao Pan, Wei Zhang, Huochun Yao
Avian pathogenic Escherichia coli is an important pathogen causes systemic infections in avian species and large economic losses in poultry industry worldwide. The functional role of porins during the infection and their mechanisms of interaction with host tissues for adhesion to and invasion are poorly understood. However, whether porins play a role in infection remains unclear. In this study we evaluated the potential of ompF and ompC outer membrane porins in the pathogenesis of avian pathogenic E. coli (APEC) strain TW-XM...
March 14, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28284555/reduction-in-population-exposure-to-pm2-5-and-cancer-risk-due-to-pm2-5-bound-pahs-exposure-in-beijing-china-during-the-apec-meeting
#2
Yangyang Xie, Bin Zhao, Yuejing Zhao, Qinzi Luo, Shuxiao Wang, Bin Zhao, Shunhua Bai
Radical measures for controlling ambient air pollution sources were employed by the Chinese government during the Asia-Pacific Economic Cooperation (APEC) meeting in 2014, providing a unique case to evaluate the health effect benefits from such measures. To examine the cancer risk reduction from the source control measures during the APEC meeting, we estimated the reduction in population exposure to PM2.5 and PAHs and the reduction in PAHs-associated cancer risk if the control measures were sustained over time...
March 8, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28283322/asia-pacific-consensus-guidelines-for-endoscopic-management-of-benign-biliary-strictures
#3
REVIEW
Bing Hu, Bo Sun, Qiang Cai, James Yun Wong Lau, Shuren Ma, Takao Itoi, Jong Ho Moon, Ichiro Yasuda, Xiaofeng Zhang, Hsiu-Po Wang, Shomei Ryozawa, Rungsun Rerknimitr, Wen Li, Hiromu Kutsumi, Sundeep Lakhtakia, Hideyuki Shiomi, Ming Ji, Xun Li, Dongmei Qian, Zhuo Yang, Xiao Zheng
Benign biliary strictures (BBSs) are commonly caused by surgical injury, chronic pancreatitis, and inflammatory cholangiopathies. Although advanced imaging tests and tissue acquisition methods have been developed for evaluation of indeterminate biliary strictures, differentiation of BBSs from biliary malignancies remains a challenge to clinicians. The majority of BBSs have good response to nonsurgical treatment and surgical intervention mainly serves as a rescue when nonsurgical approaches fail. Endoscopic management is a safe, effective, and less-invasive treatment for BBSs compared with other approaches...
March 7, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28280491/comparative-analysis-of-phylogenetic-assignment-of-human-and-avian-expec-and-fecal-commensal-escherichia-coli-using-the-previous-and-revised-clermont-phylogenetic-typing-methods-and-its-impact-on-avian-pathogenic-escherichia-coli-apec-classification
#4
Catherine M Logue, Yvonne Wannemuehler, Bryon A Nicholson, Curt Doetkott, Nicolle L Barbieri, Lisa K Nolan
The Clermont scheme has been used for subtyping of Escherichia coli since it was initially described in early 2000. Since then, researchers have used the scheme to type and sub-type commensal E. coli and pathogenic E. coli, such as extraintestinal pathogenic E. coli (ExPEC), and compare their phylogenetic assignment by pathogenicity, serogroup, distribution among ExPEC of different host species and complement of virulence and resistance traits. Here, we compare assignments of human and avian ExPEC and commensal E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28270101/deciphering-alternative-splicing-and-nonsense-mediated-decay-modulate-expression-in-primary-lymphoid-tissues-of-birds-infected-with-avian-pathogenic-e-coli-apec
#5
Hongyan Sun
BACKGROUND: Avian pathogenic E. coli (APEC) can lead to a loss in millions of dollars in poultry annually because of mortality and produce contamination. Studies have verified that many immune-related genes undergo changes in alternative splicing (AS), along with nonsense mediated decay (NMD), to regulate the immune system under different conditions. Therefore, the splicing profiles of primary lymphoid tissues with systemic APEC infection need to be comprehensively examined. RESULTS: Gene expression in RNAseq data were obtained for three different immune tissues (bone marrow, thymus, and bursa) from three phenotype birds (non-challenged, resistant, and susceptible birds) at two time points...
March 7, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28266315/physiology-and-pathogenicity-of-cpdb-deleted-mutant-of-avian-pathogenic-escherichia-coli
#6
Huifang Liu, Liping Chen, Wei Si, Chunlai Wang, Fangna Zhu, Guangxing Li, Siguo Liu
Avian colibacillosis is one of the most common infectious diseases caused partially or entirely by avian pathogenic Escherichia coli (APEC) in birds. In addition to spontaneous infection, APEC can also cause secondary infections that result in greater severity of illness and greater losses to the poultry industry. In order to assess the role of 2', 3'-cyclic phosphodiesterase (cpdB) in APEC on disease physiology and pathogenicity, an avian pathogenic Escherichia coli-34 (APEC-34) cpdB mutant was obtained using the Red system...
November 17, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/28264015/mcr-1-identified-in-avian-pathogenic-escherichia-coli-apec
#7
Nicolle Lima Barbieri, Daniel W Nielsen, Yvonne Wannemuehler, Tia Cavender, Ashraf Hussein, Shi-Gan Yan, Lisa K Nolan, Catherine M Logue
Antimicrobial resistance associated with colistin has emerged as a significant concern worldwide threatening the use of one of the most important antimicrobials for treating human disease. Here, we examined a collection (n = 980) of Avian Pathogenic Escherichia coli (APEC) isolated from poultry with colibacillosis from the US and internationally for the presence of mcr-1 and mcr-2, genes known to encode colistin resistance. Included in the analysis was an additional set of avian fecal E. coli (AFEC) (n = 220) isolates from healthy birds for comparative analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28242760/dna-breaks-and-chromatin-structural-changes-enhance-the-transcription-of-autoimmune-regulator-target-genes
#8
Mithu Guha, Mario Saare, Julia Maslovskaja, Kai Kisand, Ingrid Liiv, Uku Haljasorg, Tonis Tasa, Andres Metspalu, Lili Milani, Part Peterson
The Autoimmune Regulator (AIRE) protein is the key factor in thymic negative selection of autoreactive T-cells by promoting the ectopic expression of tissue-specific genes in thymic medullary epithelium. Mutations in AIRE cause a monogenic autoimmune disease called autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED). AIRE has been shown to promote DNA breaks via its interaction with topoisomerase 2 (TOP2). In this study, we investigated topoisomerase-induced DNA breaks and chromatin structural alterations in conjunction with AIRE-dependent gene expression...
February 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28222032/unexplained-cyanosis-caused-by-hepatopulmonary-syndrome-in-a-girl-with-apeced-syndrome
#9
Fatih Celmeli, Abdullah Kocabas, Ishak A Isik, Mesut Parlak, Kai Kisand, Serdar Ceylaner, Doga Turkkahraman
Autoimmune polyendocrinopathy, candidiasis and ectodermal dystrophy (APECED) is a rare but devastating primary immunodeficiency disease caused by loss-of-function mutations in autoimmune regulator (AIRE) gene on chromosome 21q22.3. The clinical spectrum of the disease is characterized by a wide heterogeneity because of autoimmune reactions toward different endocrine and non-endocrine organs. Here, we report a 17-year-old Turkish girl diagnosed with APECED at 9 years in whom a novel homozygote mutation in AIRE gene p...
March 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28199899/role-of-outer-membrane-protein-t-in-pathogenicity-of-avian-pathogenic-escherichia-coli
#10
Hassan M A Hejair, Jiale Ma, Yingchu Zhu, Min Sun, Wenyang Dong, Yue Zhang, Zihao Pan, Wei Zhang, Huochun Yao
An outer membrane protein T (OmpT) could play a vital role in the pathogenesis of the neonatal meningitis Escherichia coli (NMEC) in human and animals. However, whether ompT plays a role in avian pathogenic E. coli (APEC) infection remains unclear. In this study we evaluated the potential of ompT in APEC pathogenesis. An ompT gene was deleted from APEC mutant strain (TW-XM) was constructed and characterized. The inactivation of ompT reduced significantly the adherence and invasion capabilities of APEC to mouse brain microvascular endothelial cell (BMEC) bEnd...
January 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28188605/-cancer-and-mycoses-and-literature-review
#11
M Develoux
Various infectious agents are classical risk factors for cancer including bacteria, viruses and parasites. There is less evidence concerning the implication of fungal infection in carcinogenesis. The role of chronic Candida infection in the development of squamous cell carcinoma has been suspected for years. Candida sp are more prevalent in potentially malignant disorder and cancer of the oral mucosa. Other epidemiological evidence of a link between Candida infection and cancer is what is observed in patients with Autoimmune Polyendocrinopathy Candidiasis Ectodermal Dystrophy (APECED)...
February 11, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28139325/characterization-of-black-carbon-in-an-urban-rural-fringe-area-of-beijing
#12
Dongsheng Ji, Liang Li, Bo Pang, Peng Xue, Lili Wang, Yunfei Wu, Hongliang Zhang, Yuesi Wang
Measuring black carbon (BC) is critical to understand the impact of combustion aerosols on air quality and climate change. In this study, BC was measured in 2014 at a unique community formed with rapid economic development and urbanization in an urban-rural fringe area of Beijing. Hourly BC concentrations were 0.1-33.5 μg/m(3) with the annual average of 4.4 ± 3.7 μg/m(3). BC concentrations had clear diurnal, weekly, and seasonal variations, and were closely related with atmospheric visibility. The absorption coefficient of aerosols increased while its contribution to extinction coefficient decreased with the enhancement of PM2...
April 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28122587/diseases-associated-with-calcium-sensing-receptor
#13
REVIEW
C Vahe, K Benomar, S Espiard, L Coppin, A Jannin, M F Odou, M C Vantyghem
The calcium-sensing receptor (CaSR) plays a pivotal role in systemic calcium metabolism by regulating parathyroid hormone secretion and urinary calcium excretion. The diseases caused by an abnormality of the CaSR are genetically determined or are more rarely acquired. The genetic diseases consist of hyper- or hypocalcemia disorders. Hypercalcaemia disorders are related to inactivating mutations of the CASR gene either heterozygous (autosomal dominant familial benign hypercalcaemia, still named hypocalciuric hypercalcaemia syndrome type 1) or homozygous (severe neonatal hyperparathyroidism)...
January 25, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28093116/captive-and-free-living-urban-pigeons-columba-livia-from-brazil-as-carriers-of-multidrug-resistant-pathogenic-escherichia-coli
#14
Clarissa A Borges, Renato P Maluta, Lívia G Beraldo, Marita V Cardozo, Elisabete A L Guastalli, Subhashinie Kariyawasam, Chitrita DebRoy, Fernando A Ávila
Thirty Escherichia coli isolates from captive and free-living pigeons in Brazil were characterised. Virulence-associated genes identified in pigeons included those which occur relatively frequently in avian pathogenic E. coli (APEC) from commercial poultry worldwide. Eleven of 30 E. coli isolates from pigeons, belonging mainly to B1 and B2 phylogenetic groups, had high or intermediate pathogenicity for 1-day-old chicks. The frequency of multi-drug resistant (MDR) E. coli in captive pigeons was relatively high and included one isolate positive for the extended-spectrum β-lactamase (ESBL) gene blaCTX-M-8...
January 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28090315/chronic-mucocutaneous-candidiasis-disease-associated-with-inborn-errors-of-il-17-immunity
#15
REVIEW
Satoshi Okada, Anne Puel, Jean-Laurent Casanova, Masao Kobayashi
Chronic mucocutaneous candidiasis (CMC) is characterized by recurrent or persistent infections affecting the nails, skin and oral and genital mucosae caused by Candida spp., mainly Candida albicans. CMC is an infectious phenotype in patients with inherited or acquired T-cell deficiency. Patients with autosomal-dominant (AD) hyper IgE syndrome (HIES), AD signal transducer and activator of transcription 1 (STAT1) gain-of-function, autosomal-recessive (AR) deficiencies in interleukin (IL)-12 receptor β1 (IL-12Rβ1), IL-12p40, caspase recruitment domain-containing protein 9 (CARD9) or retinoic acid-related orphan receptor γT (RORγT) or AR autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) develop CMC as a major infectious phenotype that is categorized as Syndromic CMC...
December 2016: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28049430/spread-of-avian-pathogenic-escherichia-coli-st117-o78-h4-in-nordic-broiler-production
#16
Troels Ronco, Marc Stegger, Rikke Heidemann Olsen, Camilla Sekse, Anne Bang Nordstoga, Tarja Pohjanvirta, Berit Lilje, Ulrike Lyhs, Paal Skytt Andersen, Karl Pedersen
BACKGROUND: Escherichia coli infections known as colibacillosis constitute a considerable challenge to poultry farmers worldwide, in terms of decreased animal welfare and production economy. Colibacillosis is caused by avian pathogenic E. coli (APEC). APEC strains are extraintestinal pathogenic E. coli and have in general been characterized as being a genetically diverse population. In the Nordic countries, poultry farmers depend on import of Swedish broiler breeders which are part of a breeding pyramid...
January 3, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28036006/efficiency-of-emission-control-measures-on-particulate-matter-related-health-impacts-and-economic-cost-during-the-2014-asia-pacific-economic-cooperation-meeting-in-beijing
#17
Qichen Liu, Jing Huang, Bin Guo, Xinbiao Guo
Background: The Asia-Pacific Economic Cooperation (APEC) meeting was held from 5 November to 11 November 2014 in Beijing, and comprehensive emission control measures were implemented. The efficiency of these measures on particulate matter-related health impacts and economic cost need to be evaluated. Methods: The influences of emission control measures during APEC on particulate matter were evaluated, and health economic effects were assessed. Results: Average concentrations of PM2.5 and PM10 during APEC were reduced by 57...
December 28, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28030923/microbiological-characterization-of-vegetables-and-their-rhizosphere-soil-in-eastern-poland
#18
Teresa Kłapeć, Angelina Wójcik-Fatla, Alicja Cholewa, Grażyna Cholewa, Jacek Dutkiewicz
The aim of this study was to investigate the bacteriological quality of 5 kinds of vegetables (lettuce, dill, radish, beetroot, carrot) and their rhizosphere soil, originating from conventional farms located in the Lublin Province of Eastern Poland. A total number of 35 samples of fresh vegetables (FV) taken immediately from soil, 35 samples of soil from rhizosphere of these vegetables (SR) and 35 samples of vegetables sold at retail in the markets in Lublin (VR) were examined. The samples were analysed for the content of: aerobic mesophilic bacteria (AMB) grown at 30°C and 37°C, Gram-negative bacteria of Enterobacteriaceae family, faecal coliform (FC) bacteria, Salmonella spp...
December 23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28012984/virulence-factors-and-antimicrobial-susceptibility-profile-of-extraintestinal-escherichia-coli-isolated-from-an-avian-colisepticemia-outbreak
#19
Jonas Fernandes Maciel, Letícia Beatriz Matter, Michele Martins Trindade, Giovana Camillo, Maristela Lovato, Sônia de Ávila Botton, Agueda Castagna de Vargas
In this study an avian colisepticemia outbreak was investigated. Two isolates from a chicken with colisepticemia were characterized for antimicrobial susceptibility and virulence factors profile. For this purpose 7 antimicrobial and 29 genes (fimH, hrlA/hek, iha, papC, sfa/focCD, tsh, mat, tia, gimB, ibeA, chuA, fyuA, ireA, iroN, irp2, iucD, sitD. chr., sitD. ep., iss, neuC, ompA, traT, astA, hlyA, sat, vat, pic, malX, cvi/cva) were tested. The outbreak happened in a hick chicken breeding located in the northwestern region of Rio Grande do Sul state in South of Brazil and caused 28...
December 21, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27993929/variants-of-asta-gene-among-extra-intestinal-escherichia-coli-of-human-and-avian-origin
#20
Renato Pariz Maluta, Janaína Luisa Leite, Thaís Cabrera Galvão Rojas, Isabel Cristina Affonso Scaletsky, Elisabete Aparecida Lopes Guastalli, Marcelo de Carvalho Ramos, Wanderley Dias da Silveira
Many Escherichia coli strains harbour astA, which is the gene encoding the enteroaggregative E. coli heat-stable enterotoxin (EAST1). This gene is embedded in a putative transposase (ORF1) and presents polymorphism in diarrheagenic strains. Although astA and orf1 are detected in extra-intestinal strains, little is known about polymorphism and differential gene transcription in this pathotype. In the present work, extra-intestinal E. coli from humans (ExPEC) and poultry (APEC) were assayed to verify the presence of astA/orf1 and possible polymorphisms in these genes...
December 18, 2016: FEMS Microbiology Letters
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