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https://www.readbyqxmd.com/read/28334685/serum-ifn-%C3%AE-induced-protein-10-ip-10-as-a-biomarker-for-severity-of-acute-respiratory-infection-in-healthy-adults
#1
Mary S Hayney, Kelsey M Henriquez, Jodi H Barnet, Tola Ewers, Heather M Champion, Sean Flannery, Bruce Barrett
BACKGROUND: The inflammatory chemokine, interferon-gamma inducible protein of 10kDa (IP-10), is a biomarker associated with several conditions. OBJECTIVES: This study investigated serum concentrations of IP-10 in healthy individuals who developed acute respiratory infection (ARI). The hypothesis is that serum IP-10 concentrations correlate with ARI severity and detection of viral pathogens. STUDY DESIGN: Data come from a randomized controlled trial measuring the effects of mindfulness meditation or exercise on ARI (Clinical Trials ID: NCT01654289)...
March 16, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28333616/cross-sectional-surveillance-of-middle-east-respiratory-syndrome-coronavirus-mers-cov-in-dromedary-camels-and-other-mammals-in-egypt-august-2015-to-january-2016
#2
Mohamed Ali, Rabeh El-Shesheny, Ahmed Kandeil, Mahmoud Shehata, Basma Elsokary, Mokhtar Gomaa, Naglaa Hassan, Ahmed El Sayed, Ahmed El-Taweel, Heba Sobhy, Folorunso Oludayo Fasina, Gwenaelle Dauphin, Ihab El Masry, Abebe Wossene Wolde, Peter Daszak, Maureen Miller, Sophie VonDobschuetz, Emma Gardner, Subhash Morzaria, Juan Lubroth, Yilma Jobre Makonnen
A cross-sectional study was conducted in Egypt to determine the prevalence of Middle East respiratory syndrome coronavirus (MERS-CoV) in imported and resident camels and bats, as well as to assess possible transmission of the virus to domestic ruminants and equines. A total of 1,031 sera, 1,078 nasal swabs, 13 rectal swabs, and 38 milk samples were collected from 1,078 camels in different types of sites. In addition, 145 domestic animals and 109 bats were sampled. Overall, of 1,031 serologically-tested camels, 871 (84...
March 16, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28332641/the-sample-of-choice-for-detecting-middle-east-respiratory-syndrome-coronavirus-in-asymptomatic-dromedary-camels-using-real-time-reversetranscription-polymerase-chain-reaction
#3
K A Mohran, E A B Farag, C B E Reusken, V S Raj, M M Lamers, S D Pas, J Voermans, S L Smits, M M Alhajri, F Alhajri, H E Al-Romaihi, H Ghobashy, M M El-Maghraby, S H S Al Dhahiry, N Al-Mawlawi, A M El-Sayed, M Al-Thani, S A Al-Marri, B L Haagmans, M P G Koopmans
The newly identified Middle East respiratory syndrome coronavirus (MERS-CoV), which causes severe respiratory disease, particularly in people with comorbidities, requires further investigation. Studies in Qatar and elsewhere have provided evidence that dromedary camels are a reservoir for the virus, but the exact modes of transmission of MERS-CoV to humans remain unclear. In February 2014, an assessment was made of the suitability and sensitivity of different types of sample for the detection of MERSCoV by real-time reverse-transcription polymerase chain reaction (RT-PCR) for three gene targets: UpE (upstream of the E gene), the N (nucleocapsid) gene and open reading frame (ORF) 1a...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332568/immunogenicity-of-candidate-mers-cov-dna-vaccines-based-on-the-spike-protein
#4
Sawsan S Al-Amri, Ayman T Abbas, Loai A Siddiq, Abrar Alghamdi, Mohammad A Sanki, Muhanna K Al-Muhanna, Rowa Y Alhabbab, Esam I Azhar, Xuguang Li, Anwar M Hashem
MERS-coronavirus is a novel zoonotic pathogen which spread rapidly to >25 countries since 2012. Its apparent endemicity and the wide spread of its reservoir host (dromedary camels) in the Arabian Peninsula highlight the ongoing public health threat of this virus. Therefore, development of effective prophylactic vaccine needs to be urgently explored given that there are no approved prophylactics or therapeutics for humans or animals to date. Different vaccine candidates have been investigated but serious safety concerns remain over protein or full-length spike (S) protein-based vaccines...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28331093/structural-characterization-of-hcov-nl63-n-protein
#5
Bozena Szelazek, Wojciech Kabala, Krzysztof Kus, Michal Zdzalik, Aleksandra Twarda-Clapa, Przemyslaw Golik, Michal Burmistrz, Dominik Florek, Benedykt Wladyka, Krzysztof Pyrc, Grzegorz Dubin
Coronaviruses are responsible for upper and lower respiratory tract infections in humans. It is estimated that 1-10% of the population suffers annually from cold-like symptoms related to infection with HCoV-NL63, an alphacoronavirus. The nucleocapsid (N) protein, the major structural component of the capsid, facilitates RNA packing, links the capsid to the envelope and is also involved in multiple other processes including viral replication and evasion of the immune system. Although the role of N protein in viral replication is relatively well described, no structural data are currently available regarding the N proteins of alphacoronaviruses...
March 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28329354/clinical-significance-of-human-coronavirus-in-bronchoalveolar-lavage-samples-from-hematopoietic-cell-transplantation-recipients-and-patients-with-hematologic-malignancies
#6
Chikara Ogimi, Alpana A Waghmare, Jane M Kuypers, Hu Xie, Cecilia C Yeung, Wendy M Leisenring, Sachiko Seo, Su-Mi Choi, Keith R Jerome, Janet A Englund, Michael Boeckh
Background: The possible role of human coronaviruses (HCoV) in lower respiratory tract disease (LRTD) in hematopoietic cell transplant (HCT) recipients and patients with hematologic malignancies (HM) has not been well studied. Methods: We conducted a retrospective review of HCT/HM patients with HCoV detected in bronchoalveolar lavage (BAL). HCoV strains were identified in BAL samples using strain-specific PCR. Mortality rates were compared among HCT recipients with LRTD caused by HCoV, respiratory syncytial virus (RSV), influenza or parainfluenza virus (PIV) by multivariable Cox regression analysis...
February 17, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28323070/urbanization-and-the-dynamics-of-rna-viruses-in-mallards-anas-platyrhynchos
#7
Michelle Wille, Kristine Lindqvist, Shaman Muradrasoli, Björn Olsen, Josef D Järhult
Urbanization is intensifying worldwide, and affects the epidemiology of infectious diseases. However, the effect of urbanization on natural host-pathogen systems remains poorly understood. Urban ducks occupy an interesting niche in that they directly interact with both humans and wild migratory birds, and either directly or indirectly with food production birds. Here we have collected samples from Mallards residing in a pond in central Uppsala, Sweden, from January 2013 to January 2014. This artificial pond is kept ice-free during the winter months, and is a popular location where the ducks are fed, resulting in a resident population of ducks year-round...
March 17, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28322925/il-22-suppresses-the-infection-of-porcine-enteric-coronaviruses-and-rotavirus-by-activating-stat3-signal-pathway
#8
Mei Xue, Jing Zhao, Lan Ying, Fang Fu, Lin Li, Yanlong Ma, Hongyan Shi, Jiaoer Zhang, Li Feng, Pinghuang Liu
Interleukin-22 (IL-22), a member of the IL-10 superfamily, plays essential roles in fighting against mucosal microbial infection and maintaining mucosal barrier integrity within the intestine. However, little knowledge exists on the ability of porcine IL-22 (pIL-22) to fight against viral infection in the gut. In this study, we found that recombinant mature pIL-22 (mpIL-22) inhibited the infection of multiple diarrhea viruses, including alpha coronavirus, porcine epidemic diarrhea virus (PEDV), transmissible gastroenteritis virus (TGEV), and porcine rotavirus (PoRV), in the intestinal porcine epithelial cell line J2 (IPEC-J2) cells...
March 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28322710/surveillance-and-testing-for-middle-east-respiratory-syndrome-coronavirus-saudi-arabia-april-2015-february-2016
#9
Abdulaziz A Bin Saeed, Glen R Abedi, Abdullah G Alzahrani, Iyad Salameh, Fatima Abdirizak, Raafat Alhakeem, Homoud Algarni, Osman A El Nil, Mutaz Mohammed, Abdullah M Assiri, Hail M Alabdely, John T Watson, Susan I Gerber
Saudi Arabia has reported >80% of the Middle East respiratory syndrome coronavirus (MERS-CoV) cases worldwide. During April 2015-February 2016, Saudi Arabia identified and tested 57,363 persons (18.4/10,000 residents) with suspected MERS-CoV infection; 384 (0.7%) tested positive. Robust, extensive, and timely surveillance is critical for limiting virus transmission.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28318484/domestic-pig-unlikely-reservoir-for-mers-cov
#10
Emmie de Wit, Friederike Feldmann, Eva Horne, Cynthia Martellaro, Elaine Haddock, Trenton Bushmaker, Kyle Rosenke, Atsushi Okumura, Rebecca Rosenke, Greg Saturday, Dana Scott, Heinz Feldmann
We tested the suitability of the domestic pig as a model for Middle East respiratory syndrome coronavirus (MERS-CoV) infection. Inoculation did not cause disease, but a low level of virus replication, shedding, and seroconversion were observed. Pigs do not recapitulate human MERS-CoV and are unlikely to constitute a reservoir in nature.
June 15, 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28317173/extracellular-matrix-in-the-cns-induced-by-neuropathogenic-viral-infection
#11
Rihito Watanabe, Masatoshi Kakizaki
During the early phase of infection with an extremely neurovirulent murine coronavirus, cl-2, the ER-TR7 antigen (ERag)-positive fibers (ERfibs) associated with laminin and collagen III show a rapid increase in expression levels in the meninges, followed by an appearance of the antigens in the ventricle and brain parenchyma. Then, cl-2 invades the ventricle and ventricular wall along the newly assembled ERfibs after infection, using them as a pathway from the meninges, the initial site of infection. In the lymph nodes and spleen, ERag is mainly produced by fibroblastic reticular cells (FRCs), which play a key role in nursing the ERfibs to form a fibroblastic reticular network (FRN)...
March 20, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28316013/the-papain-like-protease-of-avian-infectious-bronchitis-virus-has-deubiquitinating-activity
#12
Liping Yu, Xiaorong Zhang, Tianqi Wu, Yuyang Wang, Jie Meng, Qian Liu, Xiaosai Niu, Yantao Wu
Coronavirus papain-like proteases (PLPs) can act as proteases that process virus-encoded large replicase polyproteins and also as deubiquitinating (DUB) enzymes. Like the PLPs of other coronaviruses (CoVs), the avian infectious bronchitis virus (IBV) PLP catalyzes proteolysis of Gly-Gly dipeptide bonds to release mature cleavage products. However, the other functions of the IBV PLP are not well understood. In this study, we found that IBV exhibits strong global DUB activity with significant reductions of the levels of ubiquitin (Ub)-, K48-, and K63-conjugated proteins...
March 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28314561/dna-vaccine-encoding-middle-east-respiratory-syndrome-coronavirus-s1-protein-induces-protective-immune-responses-in-mice
#13
Hang Chi, Xuexing Zheng, Xiwen Wang, Chong Wang, Hualei Wang, Weiwei Gai, Stanley Perlman, Songtao Yang, Jincun Zhao, Xianzhu Xia
The Middle East respiratory syndrome coronavirus (MERS-CoV), is an emerging pathogen that continues to cause outbreaks in the Arabian peninsula and in travelers from this region, raising the concern that a global pandemic could occur. Here, we show that a DNA vaccine encoding the first 725 amino acids (S1) of MERS-CoV spike (S) protein induces antigen-specific humoral and cellular immune responses in mice. With three immunizations, high titers of neutralizing antibodies (up to 1: 10(4)) were generated without adjuvant...
March 14, 2017: Vaccine
https://www.readbyqxmd.com/read/28306724/respiratory-dna-viruses-are-undetectable-in-nasopharyngeal-secretions-from-adenotonsillectomized-children
#14
Ronaldo Bragança Martins, Lucas Penna Rocha, Mirela Moreira Prates, Talita Bianca Gagliardi, Balduino Biasoli, Marcelo Junqueira Leite, Guilherme Buzatto, Miguel Angelo Hyppolito, Davi Casale Aragon, Edwin Tamashiro, Fabiana Cardoso Pereira Valera, Eurico Arruda, Wilma Terezinha Anselmo-Lima
Respiratory viruses are frequently detected in association with chronic tonsillar hypertrophy in the absence of symptoms of acute respiratory infection (ARI). The present analysis was done in follow-up to a previous clinical study done by this same group. Nasopharyngeal washes (NPWs) were obtained from 83 of 120 individuals at variable times post adenotonsillectomy, in the absence of ARI symptoms. A look back at virus detection results in NPWs from the same 83 individuals at the time of tonsillectomy revealed that 73...
2017: PloS One
https://www.readbyqxmd.com/read/28299912/orf3a-deletion-in-field-strains-of-porcine-transmissible-gastroenteritis-virus-in-china-a-hint-of-association-with-porcine-respiratory-coronavirus
#15
X Zhang, Y Zhu, X Zhu, J Chen, H Shi, D Shi, H Dong, L Feng
Porcine-transmissible gastroenteritis virus (TGEV) is a pathogenic coronavirus responsible for high diarrhoea-associated morbidity and mortality in suckling piglets. We analysed the TGEV ORF3 gene using nested polymerase chain reaction and identified an ORF3a deletion in three field strains of TGEV collected from piglets in China in 2015. Eight TGEV ORF3 sequences were obtained in this study. Phylogenetic tree analysis of ORF3 showed that the eight TGEV ORF3 genes all belonged to the Miller cluster. CH-LNCT and CH-MZL were closely correlated with Miller M6, while CH-SH was correlated with Miller M60...
March 15, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28298907/mir-21a-5p-contributes-to-porcine-hemagglutinating-encephalomyelitis-virus-proliferation-via-targeting-cask-interactive-protein1-in-vivo-and-vitro
#16
Xiaoling Lv, Kui Zhao, Yungang Lan, Zi Li, Ning Ding, Jingjing Su, Huijun Lu, Deguang Song, Feng Gao, Wenqi He
Porcine hemagglutinating encephalomyelitis virus (PHEV) is a highly neurovirulent coronavirus that can cause nervous symptoms in piglets with muscle tremors, hind limb paralysis, and nystagmus. Whether some factors affect virus replication and proliferation had not been fully understood in the course of nerve damage caused by PHEV infection. In recent years, some reports suggested that miRNA might play a key regulatory role in viral infection. In this study, we found the miR-21a-5p is notably up-regulated in the brains of mice and N2a cells infected with PHEV, and it down-regulated the expression of CASK-interactive protein1 (Caskin1) by directly targeting the 3'-UTR of Caskin1 using a Dual-Luciferase reporter assay...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28298229/a-novel-benzo-heterocyclic-amine-derivative-n30-inhibits-influenza-virus-replication-by-depression-of-inosine-5-monophospate-dehydrogenase-activity
#17
Jin Hu, Linlin Ma, Huiqiang Wang, Haiyan Yan, Dajun Zhang, Zhuorong Li, Jiandong Jiang, Yuhuan Li
BACKGROUD: Influenza virus is still a huge threat to the world-wide public health. Host inosine-5'- monophosphate dehydrogenase (IMPDH) involved in the synthesis of guanine nucleotides, is known to be a potential target to inhibit the replication of viruses. Herein, we evaluated antiviral activity of a benzo-heterocyclic amine derivative N30, which was designed to inhibit IMPDH. RESULTS: The results demonstrated that N30 inhibited the replication of H1N1, H3N2, influenza B viruses, including oseltamivir and amantadine resistant strains in vitro...
March 15, 2017: Virology Journal
https://www.readbyqxmd.com/read/28296228/coronavirus-infections-in-horses-in-saudi-arabia-and-oman
#18
M G Hemida, D K W Chu, R A P M Perera, R L W Ko, R T Y So, B C Y Ng, S M S Chan, S Chu, A A Alnaeem, M A Alhammadi, R J Webby, L L M Poon, U B R Balasuriya, M Peiris
Equine coronaviruses (ECoV) are the only coronavirus known to infect horses. So far, data on ECoV infection in horses remain limited to the USA, France and Japan and its geographic distribution is not well understood. We carried out RT-PCR on 306 nasal and 315 rectal swabs and tested 243 sera for antibodies to detect coronavirus infections in apparently healthy horses in Saudi Arabia and Oman. We document evidence of infection with ECoV and HKU23 coronavirus by RT-PCR. There was no conclusive evidence of Middle East respiratory syndrome coronavirus infection in horses...
March 13, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28295964/respiratory-virus-infection-after-allogeneic-hematopoietic-stem-cell-transplant-in-a-tropical-center-predictive-value-of-the-immunodeficiency-scoring-index
#19
Lin Wang, John Allen, Colin Diong, Yeow-Tee Goh, Sathish Gopalakrishnan, Aloysius Ho, William Hwang, Francesca Lim, Lynette Oon, Thuan-Tong Tan, Yeh-Ching Linn, Ban-Hock Tan
BACKGROUND: Respiratory virus infection (RVI) is a prevalent infection in patients after allogeneic hematopoietic stem cell transplant (allo-HSCT) and can result in significant morbidity and mortality. Ability to assess the potential severity of RVI is important in the management of such patients. METHODS: We reviewed the cases of RVI in allo-HSCT recipients and explored the predictive value of the immunodeficiency scoring index (ISI) established for respiratory syncytial virus (RSV) and its applicability for RVI caused by other respiratory viruses...
March 10, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28295570/agreement-among-4-sampling-methods-to-identify-respiratory-pathogens-in-dairy-calves-with-acute-bovine-respiratory-disease
#20
D Doyle, B Credille, T W Lehenbauer, R Berghaus, S S Aly, J Champagne, P Blanchard, B Crossley, L Berghaus, S Cochran, A Woolums
BACKGROUND: Four sampling techniques commonly are used for antemortem identification of pathogens from cattle with bovine respiratory disease (BRD): the nasal swab (NS), guarded nasopharyngeal swab (NPS), bronchoalveolar lavage (BAL), and transtracheal wash (TTW). Agreement among these methods has not been well characterized. OBJECTIVE: To evaluate agreement among TTW and NS, NPS, or BAL for identification of viral and bacterial pathogens in dairy calves with BRD...
March 14, 2017: Journal of Veterinary Internal Medicine
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