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https://www.readbyqxmd.com/read/28102432/synthesis-of-human-parainfluenza-virus-4-nucleocapsid-like-particles-in-yeast-and-their-use-for-detection-of-virus-specific-antibodies-in-human-serum
#1
Aistė Bulavaitė, Rita Lasickienė, Paulius Lukas Tamošiūnas, Martynas Simanavičius, Kęstutis Sasnauskas, Aurelija Žvirblienė
The aim of this study was to produce human parainfluenza virus type 4 (HPIV4) nucleocapsid (N) protein in yeast Saccharomyces cerevisiae expression system, to explore its structural and antigenic properties and to evaluate its applicability in serology. The use of an optimized gene encoding HPIV4 N protein amino acid (aa) sequence GenBank AGU90031.1 allowed high yield of recombinant N protein forming nucleocapsid-like particles (NLPs) in yeast. A substitution L332D disrupted self-assembly of NLPs, confirming the role of this position in the N proteins of Paramyxovirinae...
January 19, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28099077/disease-complexity-in-a-declining-alaskan-muskox-ovibos-moschatus-population
#2
Josephine A Afema, Kimberlee B Beckmen, Stephen M Arthur, Kathy Burek Huntington, Jonna A K Mazet
The muskox ( Ovibos moschatus ) population inhabiting the eastern North Slope (ENS) of Alaska declined dramatically during 1999-2006, whereas populations in western Alaska (WA) were stable or increasing. To understand morbidity and mortality factors contributing to the decline, Alaska Department of Fish and Game conducted pathologic investigations of carcasses from 2005 until 2008. Additionally, archived sera from both ENS and WA muskoxen collected during 1984-1992, before the documented beginning of the ENS decline; sera collected during 2000, near the beginning of the decline; and contemporary sera (from live capture-release, adult females) collected during 2006, 2007, and 2008 were analyzed to determine whether prevalence of antibody to potential pathogens differed in the two areas or changed over time...
January 18, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28095926/epidemiology-of-parainfluenza-infection-in-england-and-wales-1998-2013-any-evidence-of-change
#3
H Zhao, R J Harris, J Ellis, M Donati, R G Pebody
Human parainfluenza virus (HPIV) infections are one of the commonest causes of upper and lower respiratory tract infections. In order to determine if there have been any recent changes in HPIV epidemiology in England and Wales, laboratory surveillance data between 1998 and 2013 were analysed. The UK national laboratory surveillance database, LabBase, and the newly established laboratory-based virological surveillance system, the Respiratory DataMart System (RDMS), were used. Descriptive analysis was performed to examine the distribution of cases by year, age, sex and serotype, and to examine the overall temporal trend using the χ 2 test...
January 18, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28074713/pathogens-patterns-of-pneumonia-and-epidemiologic-risk-factors-associated-with-respiratory-disease-in-recently-weaned-cattle-in-ireland
#4
Gerard M Murray, Simon J More, Dónal Sammin, Mìcheàl J Casey, Máire C McElroy, Rónan G O'Neill, William J Byrne, Bernadette Earley, Tracy A Clegg, Hywel Ball, Colin J Bell, Joseph P Cassidy
We examined the pathogens, morphologic patterns, and risk factors associated with bovine respiratory disease (BRD) in 136 recently weaned cattle ("weanlings"), 6-12 mo of age, that were submitted for postmortem examination to regional veterinary laboratories in Ireland. A standardized sampling protocol included routine microbiologic investigations as well as polymerase chain reaction and immunohistochemistry. Lungs with histologic lesions were categorized into 1 of 5 morphologic patterns of pneumonia. Fibrinosuppurative bronchopneumonia (49%) and interstitial pneumonia (48%) were the morphologic patterns recorded most frequently...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28070089/development-of-a-one-run-real-time-pcr-detection-system-for-pathogens-associated-with-bovine-respiratory-disease-complex
#5
Mai Kishimoto, Shinobu Tsuchiaka, Sayed Samim Rahpaya, Ayako Hasebe, Keiko Otsu, Satoshi Sugimura, Suguru Kobayashi, Natsumi Komatsu, Makoto Nagai, Tsutomu Omatsu, Yuki Naoi, Kaori Sano, Sachiko Okazaki-Terashima, Mami Oba, Yukie Katayama, Reiichiro Sato, Tetsuo Asai, Tetsuya Mizutani
Bovine respiratory disease complex (BRDC) is frequently found in cattle worldwide. The etiology of BRDC is complicated by infections with multiple pathogens, making identification of the causal pathogen difficult. Here, we developed a detection system by applying TaqMan real-time PCR (Dembo respiratory-PCR) to screen a broad range of microbes associated with BRDC in a single run. We selected 16 bovine respiratory pathogens (bovine viral diarrhea virus, bovine coronavirus, bovine parainfluenza virus 3, bovine respiratory syncytial virus, influenza D virus, bovine rhinitis A virus, bovine rhinitis B virus, bovine herpesvirus 1, bovine adenovirus 3, bovine adenovirus 7, Mannheimia haemolytica, Pasteurella multocida, Histophilus somni, Trueperella pyogenes, Mycoplasma bovis and Ureaplasma diversum) as detection targets and designed novel specific primer-probe sets for nine of them...
January 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28067078/antiviral-therapy-for-respiratory-viral-infections-in-immunocompromised-patients
#6
Lokesh Shahani, Ella J Ariza-Heredia, Roy F Chemaly
Respiratory viruses (influenza, parainfluenza, respiratory syncytial virus, coronavirus, human metapneumovirus, and rhinovirus) represent the most common causes of respiratory viral infections in immunocompromised patients. Also, these infections may be more severe in immunocompromised patients than in the general population. Early diagnosis and treatment of viral infections continue to be of paramount importance in immunocompromised patients; because once viral replication and invasive infections are evident, prognosis can be grave...
January 16, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28060016/excess-respiratory-viral-infections-and-low-antibody-responses-among-hiv-exposed-uninfected-infants
#7
Adriana Weinberg, Marisa M Mussi-Pinhata, Qilu Yu, Rachel A Cohen, Volia C Almeida, Fabiana Amaral, Jorge Pinto, Maria L B Teixeira, Regina C M Succi, Laura Freimanis, Jennifer S Read, George Siberry
OBJECTIVE: HIV-exposed uninfected infants (HEUs) have frequent severe infection, hospitalization and death. We performed a serologic investigation to determine the role of common childhood respiratory pathogens in the excess incidence of infections in HEUs. DESIGN: Prospective cohort study of mother-infant pairs. METHODS: Among 247 HEUs and 88 HIV-unexposed uninfected (HUU) infant-mother pairs, we measured maternal antibodies to respiratory syncytial virus (RSV) and pneumococcus (PNC 1, 5, 6B, 14); infant antibodies to RSV, influenza A (Flu), parainfluenza viruses (PIV 1, 2, 3), and PNC 1, 5, 6B and 14 were measured at 0 and 6 months, and anti-tetanus antibodies at 6 months...
January 4, 2017: AIDS
https://www.readbyqxmd.com/read/28040689/burden-of-healthcare-associated-viral-respiratory-infections-in-children-s-hospitals
#8
Caroline Quach, Rita Shah, Lorry G Rubin
OBJECTIVE: Although healthcare-associated (HA) viral respiratory infections (VRIs) are common in pediatrics, no benchmark for comparison exists. We aimed to determine, compare, and assess determinants of unit-specific HA-VRI incidence rates in 2 children's hospitals. METHODS: This study was a retrospective comparison of prospective cohorts. The Montreal Children's Hospital and the Cohen Children's Medical Center of New York perform prospective surveillance for HA-VRI using standardized definitions that require the presence of symptoms compatible with VRI and virus detection...
December 30, 2016: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28039378/haemophilus-species-as-a-urinary-tract-pathogen
#9
L Karen Diedrich, Cora L Manby
Haemophilus species, as a urinary tract pathogen, is rarely encountered. Routine urine culture pathogens are well documented to include Enterobacteriaciae, Enterococcus spp., Staphylococcus spp., Pseudomonas spp., and Candida spp. Pathogens encountered rarely in this context may include Corynebacterium ureolyticus and nonfermenting gram negative bacilli. This case study involves the finding of Haemophilus influenzae in a urine culture performed on a 4-year-old Caucasian girl and Haemophilus parinfluenzae in a 60-year-old African American man with pyelonephritis...
December 29, 2016: Laboratory Medicine
https://www.readbyqxmd.com/read/28011972/four-cases-with-kawasaki-disease-and-viral-infection-aetiology-or-association
#10
Tuba Giray, Suat Biçer, Öznur Küçük, Defne Çöl, Zerrin Yalvaç, Yeşim Gürol, Gülden Yilmaz, Ahmet Saç, Yigit Mogol
The aetiology of Kawasaki disease has not yet been precisely determined. It has been associated with a variety of bacterial and viral agents. Some viruses including human adenovirus, coronavirus, and parainfluenza virus type 3 have been isolated from patients with Kawasaki disease. Clinical presentation of patients with human coronavirus and adenovirus infections mimics Kawasaki disease. In addition, these viruses may also be detected in Kawasaki disease as a coinfection. In this report, we present four Kawasaki disease patients infected with adenovirus, coronavirus OC43/HKU1 and parainfluenza virus type 3...
1, 2016: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/27997620/molecular-and-serological-survey-of-selected-viruses-in-free-ranging-wild-ruminants-in-iran
#11
Farhid Hemmatzadeh, Wayne Boardman, Arezo Alinejad, Azar Hematzade, Majid Kharazian Moghadam
A molecular and serological survey of selected viruses in free-ranging wild ruminants was conducted in 13 different districts in Iran. Samples were collected from 64 small wild ruminants belonging to four different species including 25 Mouflon (Ovis orientalis), 22 wild goat (Capra aegagrus), nine Indian gazelle (Gazella bennettii) and eight Goitered gazelle (Gazella subgutturosa) during the national survey for wildlife diseases in Iran. Serum samples were evaluated using serologic antibody tests for Peste de petits ruminants virus (PPRV), Pestiviruses [Border Disease virus (BVD) and Bovine Viral Diarrhoea virus (BVDV)], Bluetongue virus (BTV), Bovine herpesvirus type 1 (BHV-1), and Parainfluenza type 3 (PI3)...
2016: PloS One
https://www.readbyqxmd.com/read/27993295/viruses-are-prevalent-in-non-ventilated-hospital-acquired-pneumonia
#12
Andrew F Shorr, Marya D Zilberberg, Scott T Micek, Marin H Kollef
BACKGROUND: Hospital-acquired pneumonia arising in non-ventilated patients (NVHAP) is traditionally thought to be caused by bacteria, and little is known about viral etiologies in this syndrome. We sought to describe the prevalence of viruses causing NVHAP and to determine factors independently associated with the isolation of a virus. METHODS: We identified patients with NVHAP over one year and reviewed their cultures to determine etiologies. Patients with a viral process were compared to those with either negative cultures or a bacterial infection to determine variables independently associated with the recovery of a virus...
January 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/27924179/ischemic-stroke-and-septic-shock-after-subacute-endocarditis-caused-by-haemophilus-parainfluenzae-case-report
#13
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
#14
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...
January 15, 2017: 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
#15
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...
April 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27888562/parainfluenza-3-infections-early-after-kidney-or-simultaneous-pancreas-kidney-transplantation
#16
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
#17
Shengwei Zhang, Yanliang Jiang, Qi Cheng, Yi Zhong, 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 with 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...
February 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/27864671/effects-of-polymer-based-silver-nanoparticle-coated-silicone-splints-on-the-nasal-mucosa-of-rats
#18
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
#19
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
#20
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
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