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https://www.readbyqxmd.com/read/28224774/comparison-of-luminex-nxtag-respiratory-pathogen-panel-and-xtag-respiratory-viral-panel-fast-version-2-for-the-detection-of-respiratory-viruses
#1
Chun Kiat Lee, Hong Kai Lee, Christopher Wei Siong Ng, Lily Chiu, Julian Wei Tze Tang, Tze Ping Loh, Evelyn Siew Chuan Koay
Owing to advancements in molecular diagnostics, recent years have seen an increasing number of laboratories adopting respiratory viral panels to detect respiratory pathogens. In December 2015, the NxTAG respiratory pathogen panel (NxTAG RPP) was approved by the United States Food and Drug Administration. We compared the clinical performance of this new assay with that of the xTAG respiratory viral panel (xTAG RVP) FAST v2 using 142 clinical samples and 12 external quality assessment samples. Discordant results were resolved by using a laboratory-developed respiratory viral panel...
May 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28224112/intravenous-vitamin-c-as-adjunctive-therapy-for-enterovirus-rhinovirus-induced-acute-respiratory-distress-syndrome
#2
Alpha A Fowler Iii, Christin Kim, Lawrence Lepler, Rajiv Malhotra, Orlando Debesa, Ramesh Natarajan, Bernard J Fisher, Aamer Syed, Christine DeWilde, Anna Priday, Vigneshwar Kasirajan
We report a case of virus-induced acute respiratory distress syndrome (ARDS) treated with parenteral vitamin C in a patient testing positive for enterovirus/rhinovirus on viral screening. This report outlines the first use of high dose intravenous vitamin C as an interventional therapy for ARDS, resulting from enterovirus/rhinovirus respiratory infection. From very significant preclinical research performed at Virginia Commonwealth University with vitamin C and with the very positive results of a previously performed phase I safety trial infusing high dose vitamin C intravenously into patients with severe sepsis, we reasoned that infusing identical dosing to a patient with ARDS from viral infection would be therapeutic...
February 4, 2017: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28217559/a-novel-enterovirus-71-ev71-virulence-determinant-the-69th-residue-of-3c-protease-modulates-pathogenicity
#3
Bingqing Li, Yingying Yue, Yajie Zhang, Zenglin Yuan, Peng Li, Nannan Song, Wei Lin, Yan Liu, Lichuan Gu, Hong Meng
Human enterovirus type 71 (EV71), the major causative agent of hand-foot-and-mouth disease, has been known to cause fatal neurological complications. Unfortunately, the reason for neurological complications that have been seen in fatal cases of the disease and the relationship between EV71 virulence and viral genetic sequences remains largely undefined. The 3C protease (3C(pro)) of EV71 plays an irreplaceable role in segmenting the precursor polyprotein during viral replication, and intervening with host life activity during viral infection...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28214160/laboratory-based-surveillance-of-hospital-acquired-respiratory-virus-infection-in-a-tertiary-care-hospital
#4
Hye-Suk Choi, Mi-Na Kim, Heungsup Sung, Jeong-Young Lee, Hee-Youn Park, Sun-Hee Kwak, Young-Ju Lim, Min-Jee Hong, Sun-Kyung Kim, So-Yeon Park, Hyeon-Jeong Kim, Kyu-Ri Kim, Hye-Ran Choi, Jae Sim Jeong, Sang-Ho Choi
Of 7,772 laboratory-confirmed cases of respiratory viral infection among hospitalized patients, 22.8% were categorized as having hospital-acquired infection. The overall incidence of hospital-acquired respiratory viral infection was 3.9 (95% confidence interval, 3.7-4.1) cases per 1,000 admitted patients. Rhinovirus was the most common virus (30.3%), followed by influenza virus (17.6%) and parainfluenza virus (15.6%).
February 15, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28213960/association-of-rhinovirus-with-exacerbations-in-young-children-affected-by-cystic-fibrosis-preliminary-data
#5
Sacha Stelzer-Braid, Nancy Liu, Michael Doumit, Russell D'Cunha, Yvonne Belessis, Adam Jaffe, William D Rawlinson
Rhinovirus (RV) is a common respiratory viral infection linked to worsening of chronic respiratory diseases including cystic fibrosis (CF) and asthma. RV was tested by RT-PCR in samples (n = 465) collected from the upper (nasal swab, oropharyngeal suction and sputum) and lower (bronchoalveolar washings) respiratory tract of 110 children with CF. Air samples (n = 52) collected from the operating theatres and outpatient clinics were tested for RV. RV was found in 43% of children <5 years suffering an exacerbation, and 12% of older children (5-17 years)...
February 18, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28193180/viral-aetiology-of-bronchiolitis-in-hospitalised-children-in-qatar
#6
Ibrahim Janahi, Anas Abdulkayoum, Fawziya Almeshwesh, Mohamed Alkuwari, Ahmed Al Hammadi, Marwah Alameri
BACKGROUND: Bronchiolitis is considered one of the earliest and most common causes of hospitalisation in young children. Development of molecular technologies allowed a better understanding of bronchiolitis aetiology. Results from cohort studies evaluating the association between single, multiple viral infections and clinical outcomes are conflicting. Data on viral bronchiolitis in children were found to be limited in Qatar. This study aimed to determine frequency and seasonal trends of viral pathogens causing acute bronchiolitis, and to explore association between viral pathogens, disease severity and length of stay (LOS)...
February 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28192616/association-of-ormdl3-with-rhinovirus-induced-endoplasmic-reticulum-stress-and-type-i-interferon-responses-in-human-leukocytes
#7
Yi-Ping Liu, Victoria Rajamanikham, Marissa Baron, Sagar Patel, Sameer K Mathur, Elizabeth A Schwantes, Carole Ober, Daniel J Jackson, James E Gern, Robert F Lemanske, Judith A Smith
BACKGROUND: Children with risk alleles at the 17q21 genetic locus who wheeze during rhinovirus illnesses have a greatly increased likelihood of developing childhood asthma. In mice, overexpression of the 17q21 gene ORMDL3 leads to airway remodeling and hyper-responsiveness. However, the mechanisms by which ORMDL3 predisposes to asthma are unclear. Previous studies have suggested that ORMDL3 induces endoplasmic reticulum (ER) stress and production of the type I interferon (IFN) regulated chemokine CXCL10...
February 13, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28191362/the-anti-inflammatory-effect-of-alpha-1-antitrypsin-in-rhinovirus-infected-human-airway-epithelial-cells
#8
Di Jiang, Reena Berman, Qun Wu, Connor Stevenson, Hong Wei Chu
OBJECTIVE: Excessive airway inflammation is seen in chronic obstructive pulmonary disease (COPD) patients experiencing acute exacerbations, which are often associated with human rhinovirus (HRV) infection. Alpha-1 antitrypsin (A1AT) has anti-inflammatory function in endothelial cells and monocytes, but its anti-inflammatory effect has not been investigated in COPD airway epithelial cells. We determined A1AT's anti-inflammatory function in COPD airway epithelial cells and the underlying mechanisms such as the role of caspase-1...
December 2016: Journal of Clinical & Cellular Immunology
https://www.readbyqxmd.com/read/28187115/clinical-course-of-enterovirus-d68-in-hospitalized-children
#9
Jennifer E Schuster, Rangaraj Selvarangan, Ferdaus Hassan, Kayla B Briggs, Lindsay Hays, Jenna O Miller, Barbara Pahud, Henry T Puls, Mary Ann Queen, Marita T Thompson, Gina Weddle, Mary Anne Jackson
BACKGROUND: Enterovirus D68 (EV-D68) has been sporadically reported as a cause of respiratory tract infections. In 2014, an international outbreak of EV-D68 occurred and caused severe respiratory disease in the pediatric population. METHODS: A retrospective chart review was performed of children admitted to Children's Mercy Hospital from August 1, 2014, to September 15, 2014, with positive multiplex polymerase chain reaction testing for EV/rhinovirus (RV). Specimens were subsequently tested for EV-D68, and clinical data were obtained from the medical records...
March 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28187065/clinical-course-of-enterovirus-d68-in-hospitalized-children
#10
Jennifer E Schuster, Rangaraj Selvarangan, Ferdaus Hassan, Kayla B Briggs, Lindsay Hays, Jenna O Miller, Barbara Pahud, Henry T Puls, Mary Ann Queen, Marita T Thompson, Gina Weddle, Mary Anne Jackson
BACKGROUND: Enterovirus D68 (EV-D68) has been sporadically reported as a cause of respiratory tract infections. In 2014, an international outbreak of EV-D68 occurred and caused severe respiratory disease in the pediatric population. METHODS: A retrospective chart review was performed of children admitted to Children's Mercy Hospital from August 1-September 15, 2014 with positive multiplex PCR testing for enterovirus/rhinovirus (EV/RV). Specimens were subsequently tested for EV-D68, and clinical data were obtained from the medical records...
December 13, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28183847/human-rhinovirus-detection-in-the-lower-respiratory-tract-of-hematopoietic-cell-transplant-recipients-association-with-mortality
#11
Sachiko Seo, Alpana Waghmare, Emily M Scott, Hu Xie, Jane M Kuypers, Robert C Hackman, Angela P Campbell, Su-Mi Choi, Wendy M Leisenring, Keith R Jerome, Janet A Englund, Michael Boeckh
Human rhinoviruses are the most common respiratory viruses detected in patients after hematopoietic cell transplantation. Although rhinovirus appears to occasionally cause severe lower respiratory tract infection in immunocompromised patients, the clinical significance of rhinovirus detection in the lower respiratory tract remains unknown. We evaluated 697 recipients transplanted between 1993 and 2015 with rhinovirus in respiratory samples. As comparative cohorts, 273 recipients with lower respiratory tract infection caused by respiratory syncytial virus (N=117), parainfluenza virus (N=120), or influenza (N=36) were analyzed...
February 9, 2017: Haematologica
https://www.readbyqxmd.com/read/28179529/differential-disruption-of-nucleocytoplasmic-trafficking-pathways-by-rhinovirus-2a-proteases
#12
Kelly Watters, Bahar Inankur, Jaye C Gardiner, Jay Warrick, Nathan M Sherer, John Yin, Ann C Palmenberg
The RNA rhinoviruses (RV) encode 2A proteases (2A(pro)) that contribute essential polyprotein processing and host-cell shutoff functions during infection, including the cleavage of Phe/Gly-containing nucleoporin proteins (Nups) within nuclear pore complexes (NPC). Within the 3 RV species, multiple divergent genotypes encode diverse 2A(pro) sequences which act differentially on specific Nups. Since only subsets of Phe/Gly motifs, particularly those within Nup62, Nup98 and Nup153, are recognized by transport receptors (karyopherins) when trafficking large molecular cargos through the NPC, the processing preferences of individual 2A(pro) predict RV genotype-specific targeting of NPC pathways and cargos...
February 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28166307/picornavirus-rna-is-protected-from-cleavage-by-ribonuclease-during-virion-uncoating-and-transfer-across-cellular-and-model-membranes
#13
Elisabetta Groppelli, Hazel C Levy, Eileen Sun, Mike Strauss, Clare Nicol, Sarah Gold, Xiaowei Zhuang, Tobias J Tuthill, James M Hogle, David J Rowlands
Picornaviruses are non-enveloped RNA viruses that enter cells via receptor-mediated endocytosis. Because they lack an envelope, picornaviruses face the challenge of delivering their RNA genomes across the membrane of the endocytic vesicle into the cytoplasm to initiate infection. Currently, the mechanism of genome release and translocation across membranes remains poorly understood. Within the enterovirus genus, poliovirus, rhinovirus 2, and rhinovirus 16 have been proposed to release their genomes across intact endosomal membranes through virally induced pores, whereas one study has proposed that rhinovirus 14 releases its RNA following disruption of endosomal membranes...
February 6, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28159510/immune-and-inflammatory-response-in-bronchiolitis-due-to-respiratory-syncytial-virus-and-rhinovirus-infections-in-infants
#14
REVIEW
Silvia Vandini, Elisabetta Calamelli, Giacomo Faldella, Marcello Lanari
Bronchiolitis is a common disease in infancy, mostly due to Respiratory Syncytial Virus and Rhinovirus. In addition to acute infection, viral bronchiolitis is responsible for sequelae including recurrent wheezing and asthma. The analysis of the viral characteristics and of the pathogenesis of the infection shows differences between the two viruses that may be helpful for the development of therapies and preventive strategies.
January 16, 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28159156/antiviral-treatments
#15
REVIEW
Michael G Ison
Most viral respiratory tract infections are caused by classic respiratory viruses, including influenza, respiratory syncytial virus, human metapneumovirus, parainfluenza, rhinovirus, and adenovirus, whereas other viruses, such as herpes simplex, cytomegalovirus, and measles virus, can opportunistically affect the respiratory tract. The M2 inhibitors, amantadine and rimantadine, were historically effective for the prevention and treatment of influenza A but all circulating strains are currently resistant to these drugs...
March 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28155195/clinical-evaluation-of-the-isothermal-amplification-assays-for-the-detection-of-four-common-respiratory-viruses-in-children-with-pneumonia
#16
Hangyu Zhou, Mengchuan Zhao, Xinna Li, Dan Zhang, Shuaifeng Zhou, Chen Chen, Zhishan Feng, Xuejun Ma
Respiratory viruses are recognized as serious causes of morbidity and mortality in lower respiratory tract infections in patients. Isothermal amplification assays are increasingly used in their detection because of their rapidity, simplicity and cost-effectiveness, when compared to traditional molecular diagnostic methods. However, systematic assessment of these assays in the clinical settings is rarely reported. MEDLINE (Pubmed) searches were done analysing subject headings and words in the abstract related to isothermal amplification assay and virus...
February 2, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28151988/in-vivo-persistence-of-human-rhinoviruses-in-immunosuppressed-patients
#17
Ilka Engelmann, Anny Dewilde, Mouna Lazrek, Mathilde Batteux, Aminati Hamissi, Ibrahim Yakoub-Agha, Didier Hober
Several species of the genus Enterovirus cause persistent infections in humans. Human rhinovirus (HRV) infections are generally self-limiting but occasionally persistent infections have been described. This study aimed to identify persistent HRV infections and investigate the clinical and virologic characteristics of patients with persistent infections. From January 2012 to March 2015, 3714 respiratory specimens from 2608 patients were tested for respiratory viruses by using a multiplex reverse transcription-polymerase chain reaction...
2017: PloS One
https://www.readbyqxmd.com/read/28149827/a-case-of-rapid-progression-of-postoperative-hyperthermia-dantrolene-or-not-dilemma
#18
Marzieh R Honardar, Jesus Rubio, Sanjay M Bhananker
Malignant hyperthermia (MH) is an extremely rare and life-threatening differential diagnosis of postoperative fever. We present an 8-month-old child scheduled for elective outpatient procedure who rapidly developed high fever, tachycardia, and respiratory acidosis shortly after transfer to the postanesthesia care unit. MH hotline expert recommended administering dantrolene, but there was no evidence of hypermetabolism or lactic acidosis. The patient remained clinically stable after admission to the pediatric intensive care unit and was discharged home the next day...
October 2016: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/28144057/respiratory-viruses-in-acute-exacerbations-of-chronic-obstructive-pulmonary-disease
#19
Parvaiz A Koul, Hyder Mir, Shabir Akram, Varsha Potdar, Mandeep S Chadha
OBJECTIVE: Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) cause significant morbidity, mortality, and an inexorable decline of lung function. Data from developed countries have shown viruses to be important causes of AECOPD, but data from developing countries like India are scant. We set out to determine the contribution of viruses in the causation of hospitalized patients with AECOPD. METHODS: Twin nasopharyngeal/oropharyngeal swabs collected from 233 patients admitted with an acute AECOPD and tested for respiratory viruses including respiratory syncytial virus A and B, parainfluenza were (PIV) 1, 2, 3, and 4, human metapneumovirus (hMPV) A and B, influenza A and B, enterovirus, corona NL65, OC43, and 229E viruses, adenovirus 2 and 4, rhinovirus, and bocavirus, by duplex real time reverse-transcription polymerase chain reaction (qRT-PCR) using CDC approved primers and probes...
January 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28139879/differences-in-inflammatory-marker-patterns-for-adult-community-acquired-pneumonia-patients-induced-by-different-pathogens
#20
Meng Liu, Hui Li, Chun Xue Xue, Li Gu, Jiu Xin Qu, Yi Min Wang, Ying Mei Liu, Bin Cao, Meng Liu, Hui Li, Chun Xue Xue, Li Gu, Jiu Xin Qu, Yi Min Wang, Ying Mei Liu, Bin Cao
INTRODUCTION: The inflammatory marker patterns of Community-acquired Pneumonia (CAP) induced by different microorganisms in adult patients remained unclear. OBJECTIVES: We aim to explore the inflammatory marker patterns of adult CAP patients induced by different pathogens. METHODS: Adult CAP patients with definite etiologies were enrolled from September 2010 to June 2012. They were divided into three groups according to the causative pathogens: typical bacteria, Mycoplasma pneumoniae (MP), and viruses...
January 31, 2017: Clinical Respiratory Journal
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