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https://www.readbyqxmd.com/read/27924179/ischemic-stroke-and-septic-shock-after-subacute-endocarditis-caused-by-haemophilus-parainfluenzae-case-report
#1
Mayra Goncalves Menegueti, Jaciara Machado-Viana, Gilberto Gambero Gaspar, Edson Antonio Nicolini, Anibal Basile-Filho, Maria Auxiliadora-Martins
Haemophilus parainfluenzae, which belongs to the HACEK (Haemophilus ssp, Actinobacillus actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens, and Kingella kingae) group, is a rare cause of subacute endocarditis and may lead to ischemic stroke. A 65-year-old female patient previously diagnosed with rheumatic valve disease was submitted to surgical mitral valve repair in 1996. Physical examination did not reveal any murmurs; physical examination of the lungs and abdomen was normal. The patient was admitted to hospital with progressive dyspnea, dry cough, and fever...
January 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27915128/cholesterol-reducing-agents-inhibit-assembly-of-type-i-parainfluenza-viruses
#2
Shringkhala Bajimaya, Tsuyoshi Hayashi, Tünde Frankl, Peter Bryk, Brian Ward, Toru Takimoto
Many enveloped RNA viruses utilize lipid rafts for the assembly of progeny virions, but the role of cholesterol, a major component of rafts, on paramyxovirus budding and virion formation is controversial. In this study, we analyzed the effects of FDA-approved cholesterol-reducing agents, gemfibrozil and lovastatin, on raft formation and assembly of human parainfluenza virus type 1 (hPIV1) and Sendai virus (SeV). Treatment of the human airway epithelial A549 cells with the agents, especially when combined, significantly decreased production of infectious hPIV1 and SeV...
December 1, 2016: Virology
https://www.readbyqxmd.com/read/27894035/an-isothermal-label-free-and-rapid-one-step-rna-amplification-detection-assay-for-diagnosis-of-respiratory-viral-infections
#3
Bonhan Koo, Choong Eun Jin, Tae Yoon Lee, Jeong Hoon Lee, Mi Kyoung Park, Heungsup Sung, Se Yoon Park, Hyun Jung Lee, Sun Mi Kim, Ji Yeun Kim, Sung-Han Kim, Yong Shin
Recently, RNA viral infections caused by respiratory viruses, such as influenza, parainfluenza, respiratory syncytial virus, coronavirus, and Middle East respiratory syndrome-coronavirus (MERS-CoV), and Zika virus, are a major public health threats in the world. Although myriads of diagnostic methods based on RNA amplification have been developed in the last decades, they continue to lack speed, sensitivity, and specificity for clinical use. A rapid and accurate diagnostic method is needed for appropriate control, including isolation and treatment of the patients...
November 23, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27888562/parainfluenza-3-infections-early-after-kidney-or-simultaneous-pancreas-kidney-transplantation
#4
Ilkka Helanterä, Veli-Jukka Anttila, Raisa Loginov, Marko Lempinen
Parainfluenza (PIV) can cause serious infections after hematopoietic stem cell or lung transplantation. Limited data exist about PIV infections after kidney transplantation. We describe an outbreak of PIV-3 in a transplant unit. During the outbreak 45 patients were treated on the ward for postoperative care after kidney or simultaneous pancreas-kidney (SPK) transplantation. Altogether 29 patients were tested for respiratory viruses (12 patients with respiratory symptoms, 17 asymptomatic exposed patients) from nasopharyngeal swabs with PCR...
November 26, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27881643/inclusion-body-fusion-of-human-parainfluenza-virus-type-3-regulated-by-acetylated-%C3%AE-tubulin-enhances-viral-replication
#5
Shengwei Zhang, Yanliang Jiang, Qi Cheng, Zhong Yi, Yali Qin, Mingzhou Chen
: Viral inclusion bodies (IBs) or replication factories are unique structures generated by viral proteins together with some cellular proteins as a platform for efficient viral replication, but little is known about the mechanism underlying IB formation and fusion. Our previous study demonstrated that the interaction between the nucleoprotein (N) and phosphoprotein (P) of human parainfluenza virus type 3 (HPIV3), an enveloped virus of great medical impact, can form IBs. In this study, we found that small IBs can fuse with each other to form large IBs that enhance viral replication...
November 23, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27864671/effects-of-polymer-based-silver-nanoparticle-coated-silicone-splints-on-the-nasal-mucosa-of-rats
#6
Sultan Şevik Eliçora, Duygu Erdem, Aykut Erdem Dinç, Özlem Altunordu Kalaycı, Baki Hazer, Gamze Yurdakan, Canan Külah
Infection is a serious complication after nasal packing that otolaryngologists seek to avoid. The aim of this study is to investigate the use of silver (Ag) nanoparticle, which serves as antimicrobial agents, with nasal tampons. The study design is an experimental animal model and the setting is tertiary referral center. Twenty-four rats were randomized into the following four groups: (1) control group (n = 6); (2) silicone nasal splint (SNS) group (n  =  6); (3) polypropylene-grafted polyethylene glycol (PP-g-PEG) amphiphilic graft copolymer-coated SNS group (n  =  6); and (4) Ag nanoparticle-embedded PP-g-PEG (Ag-PP-g-PEG) amphiphilic graft copolymer-coated SNS group (n  =  6)...
November 18, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27854115/an-investigation-into-respiratory-tract-viruses-in-children-with-acute-lower-respiratory-tract-infection-or-wheezing
#7
Demet Dabaniyasti, Fahriye Eksi, Özlem Keskin, Mehmet Y Özkars, Tekin Karsligil, Iclal Balci
BACKGROUND: This study aimed to determine the frequencies of respiratory tract viruses in patient (acute lower respiratory tract infection (LRTI) or wheezing) and control (history of asthma without symptoms) groups. METHODS: Using multiplex-PCR, respiratory tract viruses were investigated in the respiratory tract specimens from patient and control groups followed in the Pediatric Clinic. RESULTS: The viruses detected in the patient and control groups (p=0...
November 17, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27805553/-monoinfection-of-human-metapneumovirus-in-cordoba-first-clinical-and-epidemiological-research-in-children-with-respiratory-infection-in-2011
#8
Pamela Elizabeth Rodriguez, María Pilar Adamo, María Gabriela Paglini, Laura Moreno, Jorge Augusto Camara, Alicia Camara
: Human metapneumovirus (hMPV) RNA virus discovered in 2001, is a pathogen associated with acute respiratory infection (ARI) in children under 5 years; its prevalence ranges from 5-15%. In Córdoba, it is not integrated into the viral research in patients with low IRA (LARI). OBJECTIVE: Detect hMPV in children under 5 years hospitalized for LARI in the Children's Hospital "Santísima Trinidad" of Cordoba (HNC) in 2011 and describe the clinical and epidemiological characteristics of monoinfecciones without comorbidity...
2016: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/27800148/prevalence-and-seasonal-distribution-of-respiratory-viruses-during-the-2014-2015-season-in-istanbul
#9
Safak Goktas, Mumtaz Cem Sirin
BACKGROUND: Acute respiratory tract infection (ARTI) is one of the most common infections worldwide, causing significant morbidity and mortality. OBJECTIVES: This study was conducted to determine the prevalence and seasonal distribution of respiratory viruses in our region, in children and adults with a pre-diagnosis of ARTI. METHODS: A total of 845 nasopharyngeal swab specimens were analyzed with the RespiFinder Smart 22 kit (PathoFinder BV, Netherlands) and the Rotor-Gene 6000 real-time PCR system...
September 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27795347/rapid-metagenomic-next-generation-sequencing-during-an-investigation-of-hospital-acquired-human-parainfluenza-virus-3-infections
#10
Alexander L Greninger, Danielle M Zerr, Xuan Qin, Amanda L Adler, Reigran Sampoleo, Jane M Kuypers, Janet A Englund, Keith R Jerome
Metagenomic next-generation sequencing (mNGS) is increasingly used for the unbiased detection of viruses, bacteria, fungi, and eukaryotic parasites in clinical samples. Whole genome sequencing (WGS) of clinical bacterial isolates has been shown to inform hospital infection prevention practices, but the use of this technology during potential respiratory virus outbreaks has not been taken advantage of. Here, we report on the use of mNGS to inform the real-time infection prevention response to a cluster of hospital-acquired human parainfluenza 3 virus (HPIV3) infections at a children's hospital...
October 26, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27795341/serology-enhances-molecular-diagnosis-of-respiratory-virus-infections-other-than-influenza-in-children-and-adults-hospitalized-with-community-acquired-pneumonia
#11
Yange Zhang, Senthilkumar K Sakthivel, Anna Bramley, Seema Jain, Amber Haynes, James D Chappell, Weston Hymas, Noel Lenny, Anami Patel, Chao Qi, Krow Ampofo, Sandra R Arnold, Wesley H Self, Derek J Williams, David Hillyard, Evan J Anderson, Carlos G Grijalva, Yuwei Zhu, Richard G Wunderink, Kathryn M Edwards, Andrew T Pavia, Jonathan A McCullers, Dean D Erdman
Both molecular and serological assays have been used previously to determine the etiology of community-acquired pneumonia (CAP). However, the correlation of these methods and added diagnostic value of serology has not been fully evaluated. Using data from patients enrolled in the Centers for Disease Control and Prevention Etiology of Pneumonia in the Community (EPIC) study, we compared real-time RT-PCR and serology for diagnosis of respiratory syncytial virus (RSV), human metapneumovirus (HMPV), parainfluenza viruses 1-3 (PIV) and adenovirus (AdV) infections...
October 19, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27786297/identification-of-different-respiratory-viruses-after-a-cell-culture-step-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-maldi-tof-ms
#12
Adriana Calderaro, Maria Cristina Arcangeletti, Isabella Rodighiero, Mirko Buttrini, Sara Montecchini, Rosita Vasile Simone, Maria Cristina Medici, Carlo Chezzi, Flora De Conto
In this study matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS), a reliable identification method for the diagnosis of bacterial and fungal infections, is presented as an innovative tool to investigate the protein profile of cell cultures infected by the most common viruses causing respiratory tract infections in humans. MALDI-TOF MS was applied to the identification of influenza A and B viruses, adenovirus C species, parainfluenza virus types 1, 2 and 3, respiratory syncytial virus, echovirus, cytomegalovirus and metapneumovirus...
October 27, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27766858/solid-state-nmr-investigation-of-the-structural-topology-and-lipid-interactions-of-a-viral-fusion-protein-chimera-containing-the-fusion-peptide-and-transmembrane-domain
#13
Hongwei Yao, Myungwoon Lee, Shu Y Liao, Mei Hong
The fusion peptide (FP) and transmembrane domain (TMD) of viral fusion proteins play important roles during virus-cell membrane fusion, by inducing membrane curvature and transient dehydration. The structure of the water-soluble ectodomain of viral fusion proteins has been extensively studied crystallographically, but the structures of the FP and TMD bound to phospholipid membranes are not well understood. We recently investigated the conformations and lipid interactions of the separate FP and TMD peptides of the parainfluenza virus 5 (PIV5) fusion protein F using solid-state NMR...
October 21, 2016: Biochemistry
https://www.readbyqxmd.com/read/27765477/haemophilus-parainfluenzae-endocarditis-in-young-adults
#14
E Faure, O Cannesson, G Schurtz, A Coisne, A Vincentelli, K Faure, B Guery
No abstract text is available yet for this article.
October 17, 2016: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/27762443/efficient-isolation-of-human-parainfluenza-viruses-1-and-3-using-mnt-1-a-human-malignant-melanoma-cell-line-system-that-exhibits-an-apparent-cytopathic-effect
#15
Ko Sato, Oshi Watanabe, Suguru Ohmiya, Fumiko Chiba, Masahiro Hayashi, Tamio Suzuki, Kazuyoshi Kawakami, Hidekazu Nishimura
Isolation of human parainfluenza virus (HPIV) serotypes 1 and 3 from clinical specimens is not very efficient because of the lack of a cell culture system capable of inducing CPE. In this study, the utility of a melanoma cell line, MNT-1, that allows HPIV growth and displays CPE was demonstrated. In particularly, the efficiency of isolating HPIV1 and HPIV3 using MNT-1 was greater than for cell lines conventionally used for HPIV isolation. Our demonstrated efficacy of HPIV1 and HPIV3 isolation with apparent CPE using the MNT-1 cell culture system has the potential to improve virus isolation from clinical specimens...
November 2016: Microbiology and Immunology
https://www.readbyqxmd.com/read/27753796/etiology-of-acute-respiratory-infections-in-infants-a-prospective-birth-cohort-study
#16
Prawin Kumar, Guruprasad R Medigeshi, Vishnu S Mishra, Mojahidul Islam, Shivani Randev, Aparna Mukherjee, Rama Chaudhry, Arti Kapil, Kana Ram Jat, Rakesh Lodha, Sushil K Kabra
BACKGROUND: There is paucity of studies on etiology of acute respiratory infections (ARI) in infants. OBJECTIVE: To document incidence and etiology of ARI in infants, their seasonal variability and association of clinical profile with etiology. MATERIAL AND METHODS: A birth cohort was followed for the first year of life; for each episode of ARI, nasopharyngeal aspirates were collected to identify the causative respiratory virus/es using multiplex real time PCR assay...
October 6, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27741941/nasal-carriage-of-common-bacterial-pathogens-among-healthy-kindergarten-children-in-chaoshan-region-southern-china-a-cross-sectional-study
#17
Hui Pan, Binglin Cui, Yuanchun Huang, Jiacai Yang, William Ba-Thein
BACKGROUND: Nasal colonization with bacterial pathogens is associated with risk of invasive respiratory tract infections, but the related information for Chinese healthy children is scarce. METHODS: This cross-sectional study was conducted with healthy children from 6 kindergartens in the Chaoshan region, southern China during 2011-2012. Nasal swabs were examined for five common bacterial pathogens: Streptococcus pneumoniae, Haemophilus influenzae, Haemophilus parainfluenzae, Moraxella catarrhalis, and Staphylococcus aureus...
September 30, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27738046/complete-genome-sequences-of-two-novel-isolates-of-human-parainfluenza-virus-1-associated-with-acute-respiratory-infection
#18
J L Denson, J L Kennedy, W N Dehority, M M Eickman, K S Schwalm, A N Stoner, J C Kincaid, T J Abramo, T M Thompson, E M Ulloa, S W Burchiel, S A Young, D L Dinwiddie
Using target capture of viral nucleic acid and next-generation sequencing, we generated the complete genomes of two novel human parainfluenza virus 1 isolates. Isolates AR001 (accession no. KX570602) and NM001 (accession no. KX639498) were collected 3 months apart from pediatric patients with acute respiratory infection from Arkansas and New Mexico, respectively.
October 13, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27737646/maternal-vitamin-d-supplementation-during-pregnancy-and-lactation-to-prevent-acute-respiratory-infections-in-infancy-in-dhaka-bangladesh-mdari-trial-protocol-for-a-prospective-cohort-study-nested-within-a-randomized-controlled-trial
#19
Shaun K Morris, Lisa G Pell, Mohammed Ziaur Rahman, Michelle C Dimitris, Abdullah Mahmud, M Munirul Islam, Tahmeed Ahmed, Eleanor Pullenayegum, Tahmid Kashem, Shaila S Shanta, Jonathan Gubbay, Eszter Papp, Michelle Science, Stanley Zlotkin, Daniel E Roth
BACKGROUND: Early infancy is a high-risk period for severe acute respiratory infection (ARI), particularly in low-income countries with resource-limited health systems. Lower respiratory tract infection (LRTI) is commonly preceded by upper respiratory infection (URTI), and often caused by respiratory syncytial virus (RSV), influenza and other common community-acquired viral pathogens. Vitamin D status is a candidate modifiable early-life determinant of the host antiviral immune response and thus may influence the risk of ARI-associated morbidity in high-risk populations...
October 13, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27729119/the-ubiquity-of-asymptomatic-respiratory-viral-infections-in-the-tonsils-and-adenoids-of-children-and-their-impact-on-airway-obstruction
#20
Howard Faden, Vincent Callanan, Michael Pizzuto, Mark Nagy, Mark Wilby, Daryl Lamson, Brian Wrotniak, Stefan Juretschko, Kirsten St George
BACKGROUND: Airway obstruction due to enlargement of tonsils and adenoids is a common pediatric problem resulting in sleep disordered breathing. The cause for the relatively abnormal growth of tonsils and adenoids is poorly understood. METHODS: Non-acutely ill children undergoing tonsillectomy and adenoidectomy (T&A) for various reasons were enrolled prospectively in a study to determine the frequency of asymptomatic respiratory viral infections in each lymphoid tissue and to relate the number and types of virus to the degree of airway obstruction...
November 2016: International Journal of Pediatric Otorhinolaryngology
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