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Parainfluenza virus

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https://www.readbyqxmd.com/read/27915128/cholesterol-reducing-agents-inhibit-assembly-of-type-i-parainfluenza-viruses
#1
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
#2
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
#3
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
#4
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/27854115/an-investigation-into-respiratory-tract-viruses-in-children-with-acute-lower-respiratory-tract-infection-or-wheezing
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/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
#12
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
#13
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/27738046/complete-genome-sequences-of-two-novel-isolates-of-human-parainfluenza-virus-1-associated-with-acute-respiratory-infection
#14
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
#15
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
#16
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
https://www.readbyqxmd.com/read/27726802/respiratory-rna-viruses
#17
Richard L Hodinka
Acute upper and lower respiratory infections are a major public health problem and a leading cause of morbidity and mortality worldwide. At greatest risk are young children, the elderly, the chronically ill, and those with suppressed or compromised immune systems. Viruses are the predominant cause of respiratory tract illnesses and include RNA viruses such as respiratory syncytial virus, influenza virus, parainfluenza virus, metapneumovirus, rhinovirus, and coronavirus. Laboratory testing is required for a reliable diagnosis of viral respiratory infections, as a clinical diagnosis can be difficult since signs and symptoms are often overlapping and not specific for any one virus...
August 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/27725531/prevalence-and-risk-factors-of-respiratory-viral-infections-in-exacerbations-of-chronic-obstructive-pulmonary-disease
#18
Hyun Jung Kwak, Dong Won Park, Jee Eun Kim, Min Kyung Park, Gun Woo Koo, Tai Sun Park, Ji-Yong Moon, Tae Hyung Kim, Jang Won Sohn, Ho Joo Yoon, Dong Ho Shin, Sang-Heon Kim
Exacerbations of chronic obstructive pulmonary disease (COPD) lead to high morbidity and mortality. Respiratory virus infection is considered as one of the important causes of COPD exacerbations. The aim of this study was to assess the prevalence of respiratory virus infection in COPD exacerbations and to find the factors associated with susceptibility to viral infections. Furthermore, we tried to examine if COPD exacerbations caused by viral infections have more severe clinical outcomes in comparison with those with non-viral causes...
2016: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27714467/is-the-role-of-rhinoviruses-as-causative-agents-of-pediatric-community-acquired-pneumonia-over-estimated
#19
Tatyana V Spichak, Svetlana B Yatsyshina, Lubov К Кatosova, Svetlana S Кim, Matti O Korppi
: The role that rhinoviruses, enteroviruses, parainfluenza viruses, coronaviruses and human bocavirus play in pediatric pneumonia is insufficiently studied. We used polymerase chain reaction (PCR) to study 9 virus groups, including 16 different viruses or viral strains, in 56 ambulatory children with radiologically confirmed community-acquired pneumonia (CAP). The same tests were carried out on 474 apparently healthy control children of the same age and sex. The mean age of children with CAP was 6...
October 6, 2016: European Journal of Pediatrics
https://www.readbyqxmd.com/read/27707917/identification-of-interferon-stimulated-gene-proteins-that-inhibit-human-parainfluenza-virus-type-3
#20
M A G Rabbani, Michael Ribaudo, Ju-Tao Guo, Sailen Barik
: A major arm of cellular innate immunity is type I interferon (IFN), represented by IFN-α and IFN-β. Type I IFN transcriptionally induces a large number of cellular genes, collectively known as IFN-stimulated gene (ISG) proteins, which act as antivirals. The IFIT (interferon-induced proteins with tetratricopeptide repeats) family proteins constitute a major subclass of ISG proteins and are characterized by multiple tetratricopeptide repeats (TPRs). In this study, we have interrogated IFIT proteins for the ability to inhibit the growth of human parainfluenza virus type 3 (PIV3), a nonsegmented negative-strand RNA virus of the Paramyxoviridae family and a major cause of respiratory disease in children...
December 15, 2016: Journal of Virology
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