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https://www.readbyqxmd.com/read/28648850/complete-genome-analysis-of-dengue-virus-type-3-isolated-from-the-2013-dengue-outbreak-in-yunnan-china
#1
Xiaodan Wang, Dehong Ma, Xinwei Huang, Lihua Li, Duo Li, Yujiao Zhao, Lijuan Qiu, Yue Pan, Junying Chen, Juemin Xi, Xiyun Shan, Qiangming Sun
In the past few decades, dengue has spread rapidly and is an emerging disease in China. An unexpected dengue outbreak occurred in Xishuangbanna, Yunnan, China, resulting in 1331 patients in 2013. In order to obtain the complete genome information and perform mutation and evolutionary analysis of causative agent related to this largest outbreak of dengue fever. The viruses were isolated by cell culture and evaluated by genome sequence analysis. Phylogenetic trees were then constructed by Neighbor-Joining methods (MEGA6...
June 22, 2017: Virus Research
https://www.readbyqxmd.com/read/28636782/changing-trends-in-complications-of-chronic-hepatitis-c
#2
Mei Lu, Jia Li, Loralee B Rupp, Yueren Zhou, Scott D Holmberg, Anne C Moorman, Philip R Spradling, Eyasu H Teshale, Joseph A Boscarino, Yihe G Daida, Mark A Schmidt, Sheri Trudeau, Stuart C Gordon
BACKGROUND AND AIMS: Chronic hepatitis C virus (HCV)-related complications have increased over the past decade. METHODS: We used join-point regression modeling to investigate trends in these complications from 2006-2015, and the impact of demographics on these trends. Using data from the Chronic Hepatitis Cohort Study (CHeCS), we identified points at which the trend significantly changed, and estimated the annual percent change (APC) in rates of cirrhosis, decompensated cirrhosis, and all-cause mortality, adjusted by race, sex, and age...
June 21, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28627771/clinical-experience-with-the-integrase-inhibitors-dolutegravir-and-elvitegravir-in-hiv-infected-patients-efficacy-safety-and-tolerance
#3
Purificación Cid-Silva, Josep María Llibre, Noelia Fernández-Bargiela, Luis Margusino-Framiñán, Vanesa Balboa-Barreiro, Berta Pernas-Souto, Isabel Martín-Herranz, Ángeles Castro-Iglesias, Eva Poveda-López
Two integrase inhibitors (INSTIs), Dolutegravir (DTG) and Elvitegravir/Cobicistat (EVG/COBI) have joined recently the pharmacotherapy arsenal against HIV. This study evaluated the efficacy and tolerability of these INSTIs in the last two years. A retrospective observational study in patients who started DTG or EVG/COBI from January 2015 to January 2017 at a reference hospital in Northwestern Spain was done. Epidemiological, clinical and immunovirological data were recorded. A statistical analysis was performed using SPSS software...
June 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28625551/sensing-self-and-foreign-circular-rnas-by-intron-identity
#4
Y Grace Chen, Myoungjoo V Kim, Xingqi Chen, Pedro J Batista, Saeko Aoyama, Jeremy E Wilusz, Akiko Iwasaki, Howard Y Chang
Circular RNAs (circRNAs) are single-stranded RNAs that are joined head to tail with largely unknown functions. Here we show that transfection of purified in vitro generated circRNA into mammalian cells led to potent induction of innate immunity genes and confers protection against viral infection. The nucleic acid sensor RIG-I is necessary to sense foreign circRNA, and RIG-I and foreign circRNA co-aggregate in cytoplasmic foci. CircRNA activation of innate immunity is independent of a 5' triphosphate, double-stranded RNA structure, or the primary sequence of the foreign circRNA...
June 7, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28604797/a-human-inferred-germline-antibody-binds-to-an-immunodominant-epitope-and-neutralizes-zika-virus
#5
Diogo M Magnani, Cassia G T Silveira, Brandon C Rosen, Michael J Ricciardi, Núria Pedreño-Lopez, Martin J Gutman, Varian K Bailey, Helen S Maxwell, Aline Domingues, Lucas Gonzalez-Nieto, Vivian I Avelino-Silva, Mateus Trindade, Juliana Nogueira, Consuelo S Oliveira, Alvino Maestri, Alvina Clara Felix, José Eduardo Levi, Mauricio L Nogueira, Mauricio A Martins, José M Martinez-Navio, Sebastian P Fuchs, Stephen S Whitehead, Dennis R Burton, Ronald C Desrosiers, Esper G Kallas, David I Watkins
The isolation of neutralizing monoclonal antibodies (nmAbs) against the Zika virus (ZIKV) might lead to novel preventative strategies for infections in at-risk individuals, primarily pregnant women. Here we describe the characterization of human mAbs from the plasmablasts of an acutely infected patient. One of the 18 mAbs had the unusual feature of binding to and neutralizing ZIKV despite not appearing to have been diversified by affinity maturation. This mAb neutralized ZIKV (Neut50 ~ 2 μg/ml) but did not react with any of the four dengue virus serotypes...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28595595/multiplex-detection-in-tonsillar-tissue-of-all-known-human-polyomaviruses
#6
Mohammadreza Sadeghi, Yilin Wang, Torbjörn Ramqvist, Leena-Maija Aaltonen, Lari Pyöriä, Mari Toppinen, Maria Söderlund-Venermo, Klaus Hedman
BACKGROUND: In the past few years, eleven new human viruses have joined the two previously known members JCPyV and BKPyV of the Polyomaviridae family, by virtue of molecular methods. Serology data suggest that infections with human polyomaviruses (HPyVs) occur since childhood and the viruses are widespread in the general population. However, the viral persistence sites and transmission routes are by and large unknown. Our previous studies demonstrated that the four new HPyVs - KIPyV, WUPyV, MCPyV and TSPyV - were present in the tonsils, and suggested lymphoid tissue as a persistent site of these emerging human viruses...
June 8, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28546690/update-on-the-epidemiology-and-antibiotic-resistance-of-ocular-infections
#7
Darlene Miller
PURPOSE: The purpose of this review is to provide an update on the epidemiology and current antibiotic-resistant threats in ophthalmology. METHODS: Trends in frequency and antibiotic-nonsusceptible profiles during an 11 year-period (2005-2015) were evaluated and compared with the 5-year Antibiotic Resistance Monitoring in Ocular Microorganism (ARMOR) study. RESULTS: Trends in the current review confirmed the continued high rates of fluoroquinolone nonsusceptbility circulating among ocular methicillin-susceptible Staphylococcus aureus, methicillin-susceptible Staphylococcus epidermidis, methicillin-resistant S...
January 2017: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/28520969/cell-mediated-immunity-to-target-the-persistent-human-immunodeficiency-virus-reservoir
#8
James L Riley, Luis J Montaner
Effective clearance of virally infected cells requires the sequential activity of innate and adaptive immunity effectors. In human immunodeficiency virus (HIV) infection, naturally induced cell-mediated immune responses rarely eradicate infection. However, optimized immune responses could potentially be leveraged in HIV cure efforts if epitope escape and lack of sustained effector memory responses were to be addressed. Here we review leading HIV cure strategies that harness cell-mediated control against HIV in stably suppressed antiretroviral-treated subjects...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28512376/oscheius-microvilli-n-sp-nematoda-rhabditidae-a-facultatively-pathogenic-nematode-from-chongming-island-china
#9
Guixin Zhou, Huan Yang, Feng Wang, Haoran Bao, Guoxiang Wang, Xianglong Hou, Jian Lin, Gabriel Yedid, Keyun Zhang
A new species, Oscheius microvilli n. sp., was found on Chongming Island (Shanghai, China). The new species is morphologically similar to the type strain of Oscheius myriophilus, but can be distinguished from it and other species of Oscheius on the basis of unique morphological characteristics of the bursa as well as male papillae. In this new species, the male bursal papillar formula is 2, 1, 3, 3 with everted tips in the first, fifth, and seventh pairs. The bursal rim is jagged, joins together anterior to the spicules, and is partially extended and decorated with microvilli...
March 2017: Journal of Nematology
https://www.readbyqxmd.com/read/28507545/clinical-and-molecular-heterogeneity-of-rtel1-deficiency
#10
Carsten Speckmann, Sushree Sangita Sahoo, Marta Rizzi, Shinsuke Hirabayashi, Axel Karow, Nina Kathrin Serwas, Marc Hoemberg, Natalja Damatova, Detlev Schindler, Jean-Baptiste Vannier, Simon J Boulton, Ulrich Pannicke, Gudrun Göhring, Kathrin Thomay, J J Verdu-Amoros, Holger Hauch, Wilhelm Woessmann, Gabriele Escherich, Eckart Laack, Liliana Rindle, Maximilian Seidl, Anne Rensing-Ehl, Ekkehart Lausch, Christine Jandrasits, Brigitte Strahm, Klaus Schwarz, Stephan R Ehl, Charlotte Niemeyer, Kaan Boztug, Marcin W Wlodarski
Typical features of dyskeratosis congenita (DC) resulting from excessive telomere shortening include bone marrow failure (BMF), mucosal fragility, and pulmonary or liver fibrosis. In more severe cases, immune deficiency and recurring infections can add to disease severity. RTEL1 deficiency has recently been described as a major genetic etiology, but the molecular basis and clinical consequences of RTEL1-associated DC are incompletely characterized. We report our observations in a cohort of six patients: five with novel biallelic RTEL1 mutations p...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28500375/first-molecular-identification-and-genetic-diversity-of-strongyloides-stercoralis-and-strongyloides-fuelleborni-in-human-communities-having-contact-with-long-tailed-macaques-in-thailand
#11
Tongjit Thanchomnang, Pewpan M Intapan, Oranuch Sanpool, Rutchanee Rodpai, Somjintana Tourtip, Sujitra Yahom, Jitsuda Kullawat, Prayong Radomyos, Chalida Thammasiri, Wanchai Maleewong
The parasitic nematodes, Strongyloides stercoralis and Strongyloides fuelleborni, can infect humans and non-human primates. We amplified and sequenced a portion of the 18S ribosomal RNA gene (rRNA) and of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene of Strongyloides from humans in the study area in Thailand, where people have frequent contact with long-tailed macaques. Fresh stool samples were obtained from 213 people and were examined using the agar plate culture method. The overall prevalence of Strongyloides infection was 8...
July 2017: Parasitology Research
https://www.readbyqxmd.com/read/28498178/supporting-implementation-research-to-improve-coverage-and-uptake-of-hiv-related-interventions
#12
Pierre Blais, Sylvia Sirivar, Joyce Seto
In 2015, Global Affairs Canada joined other members of the United Nations to establish the Sustainable Development Goals, which include the elimination of AIDS by 2030. Innovation is an important part of accelerating the response against HIV and ensuring success in eliminating AIDS by 2030. This is the reason Global Affairs Canada decided to partner with the World Health Organization, to support the INtegration and Scaling Up PMTCT through Implementation REsearch (INSPIRE) initiative, to learn how HIV interventions can be successfully integrated with other essential health services for mothers and children, especially among the most vulnerable populations...
June 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28475623/analysis-of-the-functional-compatibility-of-siv-capsid-sequences-in-the-context-of-the-fiv-gag-precursor
#13
César A Ovejero, José L Affranchino, Silvia A González
The formation of immature lentiviral particles is dependent on the multimerization of the Gag polyprotein at the plasma membrane of the infected cells. One key player in the virus assembly process is the capsid (CA) domain of Gag, which establishes the protein-protein interactions that give rise to the hexagonal lattice of Gag molecules in the immature virion. To gain a better understanding of the functional equivalence between the CA proteins of simian and feline immunodeficiency viruses (SIV and FIV, respectively), we generated a series of chimeric FIV Gag proteins in which the CA-coding region was partially or totally replaced by its SIV counterpart...
2017: PloS One
https://www.readbyqxmd.com/read/28466095/survival-of-the-fetus-fetal-b-and-t-cell-receptor-repertoire-development
#14
REVIEW
Erez Rechavi, Raz Somech
A mature and diverse T and B cell receptor repertoire is a prerequisite for immunocompetence. In light of its increased susceptibility to infection, the human fetus has long been considered deficient in this regard. However, data accumulated since the 1990s and in earnest in the past couple of years paints a more complicated picture. As we describe in this review, mechanisms responsible for generating a diverse receptor repertoire, such as somatic recombination, class switch recombination, and somatic hypermutation, are all operational to surprising extents in the growing fetus...
May 2, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28441175/acceptability-and-use-of-a-dapivirine-vaginal-ring-in-a-phase-iii-trial
#15
Elizabeth T Montgomery, Ariane van der Straten, Miria Chitukuta, Krishnaveni Reddy, Kubashni Woeber, Millicent Atujuna, Linda-Gail Bekker, Juliane Etima, Teopista Nakyanzi, Ashley J Mayo, Ariana Katz, Nicole Laborde, Cynthia I Grossman, Lydia Soto-Torres, Thesla Palanee-Phillips, Jared M Baeten
BACKGROUND: The MTN-020/ASPIRE trial evaluated the safety and effectiveness of the dapivirine vaginal ring for prevention of HIV-1 infection among African women. A nested qualitative component was conducted at six of 15 study sites in Uganda, Malawi, Zimbabwe and South Africa to evaluate acceptability of and adherence to the ring. METHOD: Qualitative study participants (n = 214) were interviewed with one of three modalities: single in-depth interview, up to three serial interviews or an exit Focus Group Discussion...
May 15, 2017: AIDS
https://www.readbyqxmd.com/read/28440467/structural-and-evolutionary-divergence-of-aquaporins-in-parasites-review
#16
Zi-Xin Ni, Jian-Min Cui, Nian-Zhang Zhang, Bao-Quan Fu
Aquaporins are ubiquitous proteins that belong to the major intrinsic protein family. Previous studies have indicated that aquaporins are involved in multiple physiological processes in parasites, such as nutrient absorption and end product efflux, and thus, would be promising pharmacological agents in the fight against parasite infection. In the present paper, the authors analyzed the evolutionary relationship of parasitic aquaporins by re‑constructing of a phylogenic tree using neighbor‑joining and maximum likelihood methods...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28414519/effect-of-a-food-supplement-containing-l-methionine-on-urinary-tract-infections-in-pregnancy-a-prospective-multicenter-observational-study
#17
MULTICENTER STUDY
Mario Passaro, Giampaolo Mainini, Francesco Ambrosio, Raimondo Sgambato, Giancarlo Balbi
OBJECTIVE: Adjuvants or alternatives to antibiotics in urinary tract infections (UTIs) during pregnancy seem advisable because of possible fetal stress. The present study assessed the effectiveness of a food supplement containing L-methionine and Hibiscus sabdariffa L. and Boswellia serrata Roxb. extracts as a treatment for symptomatic UTIs in pregnancy. DESIGN: Pregnant patients with symptomatic cystitis were screened for UTIs in three different clinical centers...
June 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28412954/does-a-quality-improvement-campaign-accelerate-take-up-of-new-evidence-a-ten-state-cluster-randomized-controlled-trial-of-the-institute-for-health-improvement-s-project-joints
#18
Eric C Schneider, Melony E Sorbero, Ann Haas, M Susan Ridgely, Dmitry Khodyakov, Claude M Setodji, Gareth Parry, Susan S Huang, Deborah S Yokoe, Don Goldmann
BACKGROUND: A decade ago, the Institute for Healthcare Improvement pioneered a quality improvement (QI) campaign, leveraging organizational and personal social networks to disseminate new practices. There have been few rigorous studies of the QI campaign approach. METHODS: Project JOINTS (Joining Organizations IN Tackling SSIs) engaged a network of state-based organizations and professionals in a 6-month QI campaign promoting adherence to three new evidence-based practices known to reduce the risk of infection after joint replacement...
April 17, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/28408415/impact-of-international-quality-improvement-collaborative-on-congenital-heart-surgery-in-pakistan
#19
Amina Khan, Ahmed Abdullah, Huzaifa Ahmad, Arjumand Rizvi, Sehrish Batool, Kathy J Jenkins, Kimberlee Gauvreau, Muneer Amanullah, Anwar Haq, Nadeem Aslam, Fauzia Minai, Babar Hasan
BACKGROUND: The International Quality Improvement Collaborative (IQIC) was formed to reduce mortality and morbidity from congenital heart disease (CHD) surgeries in low/middle-income countries. OBJECTIVES: We conducted this study to compare the postoperative outcomes of CHD surgeries at a centre in Pakistan before and after joining IQIC. METHODS: The IQIC provides guidelines targeting key drivers responsible for morbidity and mortality in postoperativepatients with CHD...
April 13, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28379372/the-microbiological-landscape-of-anaerobic-infections-in-hidradenitis-suppurativa-a-prospective-metagenomic-study
#20
Hélène Guet-Revillet, Jean-Philippe Jais, Marie-Noelle Ungeheuer, Hélène Coignard-Biehler, Sabine Duchatelet, Maïa Delage, Thi Lam, Alain Hovnanian, Olivier Lortholary, Xavier Nassif, Aude Nassif, Olivier Join-Lambert
Background.: Hidradenitis suppurativa (HS) is a frequent and severe disease of the skin, characterized by recurrent or chronic skinfolds suppurative lesions with a high impact on quality of life. Although considered inflammatory, antimicrobial treatments can improve or lead to clinical remission of HS, suggesting triggering microbial factors. Indeed, mixed anaerobic microbiota are associated with a majority of HS lesions. The aim of this study was to characterize the landscape of anaerobic infections in HS using high throughput sequencing...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
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