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https://www.readbyqxmd.com/read/28226273/acute-respiratory-infections-among-returning-hajj-pilgrims-jordan-2014
#1
Mohammad Mousa Al-Abdallat, Brian Rha, Sultan Alqasrawi, Daniel C Payne, Ibrahim Iblan, Alison M Binder, Aktham Haddadin, Mohannad Al Nsour, Tarek Alsanouri, Jawad Mofleh, Brett Whitaker, Stephen L Lindstrom, Suxiang Tong, Sami Sheikh Ali, Rebecca Moritz Dahl, LaShondra Berman, Jing Zhang, Dean D Erdman, Susan I Gerber
BACKGROUND: The emergence of Middle East Respiratory Syndrome coronavirus (MERS-CoV) has prompted enhanced surveillance for respiratory infections among pilgrims returning from the Hajj, one of the largest annual mass gatherings in the world. OBJECTIVES: To describe the epidemiology and etiologies of respiratory illnesses among pilgrims returning to Jordan after the 2014 Hajj. STUDY DESIGN: Surveillance for respiratory illness among pilgrims returning to Jordan after the 2014 Hajj was conducted at sentinel health care facilities using epidemiologic surveys and molecular diagnostic testing of upper respiratory specimens for multiple respiratory pathogens, including MERS-CoV...
February 8, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28220326/simultaneous-detection-of-severe-acute-respiratory-syndrome-middle-east-respiratory-syndrome-and-related-bat-coronaviruses-by-real-time-reverse-transcription-pcr
#2
Ji Yeong Noh, Sun-Woo Yoon, Doo-Jin Kim, Moo-Seung Lee, Ji-Hyung Kim, Woonsung Na, Daesub Song, Dae Gwin Jeong, Hye Kwon Kim
Since severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) coronaviruses (CoVs) share similar characteristics with respect to clinical signs, etiology, and transmission, methods for a rapid and accurate differential diagnosis are important. Therefore, the aim of this study was to develop a duplex real-time reverse transcription (RT)-PCR method for the simultaneous detection of these viruses. Primers and probes that target the conserved spike S2 region of human SARS-CoV, MERS-CoV, and their related bat CoVs were designed...
February 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28216184/vaccine-development-for-emerging-virulent-infectious-diseases
#3
Joel N Maslow
The recent outbreak of Zaire Ebola virus in West Africa altered the classical paradigm of vaccine development and that for emerging infectious diseases (EIDs) in general. In this paper, the precepts of vaccine discovery and advancement through pre-clinical and clinical assessment are discussed in the context of the recent Ebola virus, Middle East Respiratory Syndrome coronavirus (MERS-CoV), and Zika virus outbreaks. Clinical trial design for diseases with high mortality rates and/or high morbidity in the face of a global perception of immediate need and the factors that drive design in the face of a changing epidemiology are presented...
February 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28212305/epigenetic-landscape-during-coronavirus-infection
#4
Alexandra Schäfer, Ralph S Baric
Coronaviruses (CoV) comprise a large group of emerging human and animal pathogens, including the highly pathogenic severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV) strains. The molecular mechanisms regulating emerging coronavirus pathogenesis are complex and include virus-host interactions associated with entry, replication, egress and innate immune control. Epigenetics research investigates the genetic and non-genetic factors that regulate phenotypic variation, usually caused by external and environmental factors that alter host expression patterns and performance without any change in the underlying genotype...
February 15, 2017: Pathogens
https://www.readbyqxmd.com/read/28193191/effective-inhibition-of-mers-cov-infection-by-resveratrol
#5
Shih-Chao Lin, Chi-Tang Ho, Wen-Ho Chuo, Shiming Li, Tony T Wang, Chi-Chen Lin
BACKGROUND: Middle East Respiratory Syndrome coronavirus (MERS-CoV) is an emerging viral pathogen that causes severe morbidity and mortality. Up to date, there is no approved or licensed vaccine or antiviral medicines can be used to treat MERS-CoV-infected patients. Here, we analyzed the antiviral activities of resveratrol, a natural compound found in grape seeds and skin and in red wine, against MERS-CoV infection. METHODS: We performed MTT and neutral red uptake assays to assess the survival rates of MERS-infected Vero E6 cells...
February 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28191331/development-of-dual-taqman-based-one-step-rrt-pcr-assay-panel-for-rapid-and-accurate-diagnostic-test-of-mers-cov-a-novel-human-coronavirus-ahead-of-hajj-pilgrimage
#6
Mohammad Sadegh Hashemzadeh, Rahimeh Rasouli, Bentolhoda Zahraei, Morteza Izadi, Mahdi Tat, Seyed Hassan Saadat, Mohammad Najarasl, Behzad Khansari Nejad, Ruhollah Dorostkar
BACKGROUND: Coronaviruses (CoVs) are large ribonucleic acid (RNA) viruses causing primarily respiratory disease in humans. A novel human coronavirus, subsequently named middle east respiratory syndrome coronavirus (MERS-CoV), was first reported in Saudi Arabia in September of 2012. With increasing numbers of infections and deaths from MERS-CoV, development of a rapid and reliable kit was crucial to prevent further spread of MERS-CoV. OBJECTIVES: In this study, we present two real-time reverse-transcription polymerase chain reaction (rRT-PCR) assays for in-house rapid and sensitive diagnostic testing of MERS-CoV, detecting the regions upstream of the envelope gene (upE) and open reading frame (ORF) 1b, respectively, for initial screening and final confirmation of MERS-CoV infection, as recommended by the world health organization (WHO)...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28190501/middle-east-respiratory-syndrome-mers-coronavirus-and-dromedaries
#7
REVIEW
Ulrich Wernery, Susanna K P Lau, Patrick C Y Woo
Middle East Respiratory Syndrome (MERS) is a zoonotic viral disease that can be transmitted from dromedaries to human beings. More than 1500 cases of MERS have been reported in human beings to date. Although MERS has been associated with 30% case fatality in human beings, MERS coronavirus (MERS-CoV) infection in dromedaries is usually asymptomatic. In rare cases, dromedaries may develop mild respiratory signs. No MERS-CoV or antibodies against the virus have been detected in camelids other than dromedaries...
February 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28177112/psychobehavioural-responses-to-the-2014-middle-east-respiratory-syndrome-novel-corona-virus-mers-cov-among-adults-in-two-shopping-malls-in-jeddah-western-saudi-arabia
#8
N S AlNajjar, L M Attar, F M Farahat, A AlThaqafi
Sporadic cases of Middle East respiratory syndrome caused by a novel corona virus (MERS-CoV) were first detected in Saudi Arabia in June 2012. The number of cases was highest during April and May 2014. To assess determinants of psychobehavioural responses among the general population in Jeddah, western Saudi Arabia, a cross-sectional survey was conducted at the end of June 2014. Data included sociodemographic characteristics, level of anxiety, protective measures and social avoidance responses. A total of 358 participants completed the questionnaire; 58...
February 1, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/28148786/neurovirulent-murine-coronavirus-jhm-sd-uses-cellular-zinc-metalloproteases-for-virus-entry-and-cell-cell-fusion
#9
Judith M Phillips, Tom Gallagher, Susan R Weiss
: The coronavirus S protein requires cleavage by host cell proteases to mediate virus-cell and cell-cell fusion. Many strains of the murine coronavirus mouse hepatitis virus (MHV) have distinct, S-dependent organ and tissue tropisms despite using a common receptor, suggesting that they employ different cellular proteases for fusion. In support of this hypothesis, we found that inhibition of endosomal acidification only modestly decreased entry and overexpression of the cell surface protease TMPRSS2 greatly enhanced entry of the highly neurovirulent MHV strain JHM...
February 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28133694/spontaneous-intracranial-hemorrhage-in-a-patient-with-middle-east-respiratory-syndrome-corona-virus
#10
Fahad M Al-Hameed
The Middle East respiratory syndrome corona virus (MERS-CoV) is a novel positive sense singlestranded ribonucleic acid virus of the genus Beta corona virus. This virus was first isolated from a patient who died from severe respiratory illness in June 2012 in Jeddah, Kingdom of Saudi Arabia. We describe an unusual case of a 42 year old healthcare worker who was admitted to our Intensive Care Unit (ICU)King Abdul-Aziz Medical City, with MERS-CoV and severe acute respiratory distress Syndrome and developed a sudden-onset diabetes insipidus and spontaneous massive intracranial hemorrhage with intra-ventricular extension and tonsillar herniation...
February 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28121202/progress-of-middle-east-respiratory-syndrome-coronavirus-vaccines-a-patent-review
#11
Jiwon Choi, Mi-Gyeong Kim, Yu-Kyoung Oh, Young Bong Kim
Middle East respiratory syndrome coronavirus (MERS-CoV) has emerged as a new pathogen, causing severe complications and a high case fatality rate. No direct treatments are available as yet, highlighting the importance of prevention through suitable vaccination regimes. The viral spike (S) protein has been characterized as a key target antigen for vaccines. In particular, S protein domains have been utilized to produce high titers of neutralizing antibodies. Areas covered: Since the first report of MERS-CoV infection, a limited number of MERS-CoV-specific patents have been filed...
January 25, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28118607/middle-east-respiratory-syndrome-corona-virus-spike-glycoprotein-suppresses-macrophage-responses-via-dpp4-mediated-induction-of-irak-m-and-ppar%C3%AE
#12
Ahmed A Al-Qahtani, Konstantina Lyroni, Marina Aznaourova, Melpomeni Tseliou, Mashael R Al-Anazi, Mohammed N Al-Ahdal, Saad Alkahtani, George Sourvinos, Christos Tsatsanis
Middle East Respiratory Syndrome Corona Virus (MERS-CoV) is transmitted via the respiratory tract and causes severe Acute Respiratory Distress Syndrome by infecting lung epithelial cells and macrophages. Macrophages can readily recognize the virus and eliminate it. MERS-CoV infects cells via its Spike (S) glycoprotein that binds on Dipeptidyl-Peptidase 4 (DPP4) receptor present on macrophages. Whether this Spike/DPP4 association affects macrophage responses remains unknown. Herein we demonstrated that infection of macrophages with lentiviral particles pseudotyped with MERS-CoV S glycoprotein results in suppression of macrophage responses since it reduced the capacity of macrophages to produce TNFα and IL-6 in naive and LPS-activated THP-1 macrophages and augmented LPS-induced production of the immunosuppressive cytokine IL-10...
February 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28110493/print-media-coverage-of-ebola-virus-disease-middle-east-respiratory-syndrome-and-pertussis
#13
Sethunya Matenge, Becky Freeman, Emma Quinn, Leena Gupta
No abstract text is available yet for this article.
January 22, 2017: Australian and New Zealand Journal of Public Health
https://www.readbyqxmd.com/read/28057259/modified-vaccinia-virus-ankara-history-value-in-basic-research-and-current-perspectives-for-vaccine-development
#14
REVIEW
A Volz, G Sutter
Safety tested Modified Vaccinia virus Ankara (MVA) is licensed as third-generation vaccine against smallpox and serves as a potent vector system for development of new candidate vaccines against infectious diseases and cancer. Historically, MVA was developed by serial tissue culture passage in primary chicken cells of vaccinia virus strain Ankara, and clinically used to avoid the undesirable side effects of conventional smallpox vaccination. Adapted to growth in avian cells MVA lost the ability to replicate in mammalian hosts and lacks many of the genes orthopoxviruses use to conquer their host (cell) environment...
2017: Advances in Virus Research
https://www.readbyqxmd.com/read/28050021/systematic-active-surveillance-for-middle-east-respiratory-syndrome-coronavirus-in-camels-in-egypt
#15
Mohamed A Ali, Mahmoud M Shehata, Mokhtar R Gomaa, Ahmed Kandeil, Rabeh El-Shesheny, Ahmed S Kayed, Ahmed N El-Taweel, Mohamed Atea, Nagla Hassan, Ola Bagato, Yassmin Moatasim, Sara H Mahmoud, Omnia Kutkat, Asmaa M Maatouq, Ahmed Osman, Pamela P McKenzie, Richard J Webby, Ghazi Kayali
Middle East respiratory syndrome coronavirus (MERS-CoV) causes severe human infections and dromedary camels are considered an intermediary host. The dynamics of natural infection in camels are not well understood. Through systematic surveillance in Egypt, nasal, rectal, milk, urine and serum samples were collected from camels between June 2014 and February 2016. Locations included quarantines, markets, abattoirs, free-roaming herds and farmed breeding herds. The overall seroprevalence was 71% and RNA detection rate was 15%...
January 4, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/28049440/an-assessment-of-the-level-of-concern-among-hospital-based-health-care-workers-regarding-mers-outbreaks-in-saudi-arabia
#16
Mostafa A Abolfotouh, Ali A AlQarni, Suliman M Al-Ghamdi, Mahmoud Salam, Mohammed H Al-Assiri, Hanan H Balkhy
BACKGROUND: Middle East Respiratory Syndrome (MERS) is caused by MERS coronavirus (MERS-CoV). More than 80% of reported cases have occurred in Saudi Arabia, with a mortality exceeding 50%. Health-care workers (HCWs) are at risk of acquiring and transmitting this virus, so the concerns of HCWs in Saudi Arabia regarding MERS were evaluated. METHODS: An anonymous, self-administered, previously validated questionnaire was given to 1031 HCWs at three tertiary hospitals in Saudi Arabia from October to December, 2014...
January 3, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28040513/novel-chimeric-virus-like-particles-vaccine-displaying-mers-cov-receptor-binding-domain-induce-specific-humoral-and-cellular-immune-response-in-mice
#17
Chong Wang, Xuexing Zheng, Weiwei Gai, Gary Wong, Hualei Wang, Hongli Jin, Na Feng, Yongkun Zhao, Weijiao Zhang, Nan Li, Guoxing Zhao, Junfu Li, Jinghua Yan, Yuwei Gao, Guixue Hu, Songtao Yang, Xianzhu Xia
Middle East respiratory syndrome coronavirus (MERS-CoV) has continued spreading since its emergence in 2012 with a mortality rate of 35.6%, and is a potential pandemic threat. Prophylactics and therapies are urgently needed to address this public health problem. We report here the efficacy of a vaccine consisting of chimeric virus-like particles (VLP) expressing the receptor binding domain (RBD) of MERS-CoV. In this study, a fusion of the canine parvovirus (CPV) VP2 structural protein gene with the RBD of MERS-CoV can self-assemble into chimeric, spherical VLP (sVLP)...
December 28, 2016: Antiviral Research
https://www.readbyqxmd.com/read/28031370/binding-of-the-methyl-donor-s-adenosyl-l-methionine-to-middle-east-respiratory-syndrome-coronavirus-2-o-methyltransferase-nsp16-promotes-recruitment-of-the-allosteric-activator-nsp10
#18
Wahiba Aouadi, Alexandre Blanjoie, Jean-Jacques Vasseur, Françoise Debart, Bruno Canard, Etienne Decroly
The Middle East respiratory syndrome coronavirus (MERS-CoV) nonstructural protein 16 (nsp16) is an S-adenosyl-l-methionine (SAM)-dependent 2'-O-methyltransferase (2'-O-MTase) that is thought to methylate the ribose 2'-OH of the first transcribed nucleotide (N1) of viral RNA cap structures. This 2'-O-MTase activity is regulated by nsp10. The 2'-O methylation prevents virus detection by cell innate immunity mechanisms and viral translation inhibition by the interferon-stimulated IFIT-1 protein. To unravel the regulation of nsp10/nsp16 2'-O-MTase activity, we used purified MERS-CoV nsp16 and nsp10...
March 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28018942/murine-leukemia-virus-mlv-based-coronavirus-spike-pseudotyped-particle-production-and-infection
#19
Jean Kaoru Millet, Gary R Whittaker
Viral pseudotyped particles (pp) are enveloped virus particles, typically derived from retroviruses or rhabdoviruses, that harbor heterologous envelope glycoproteins on their surface and a genome lacking essential genes. These synthetic viral particles are safer surrogates of native viruses and acquire the tropism and host entry pathway characteristics governed by the heterologous envelope glycoprotein used. They have proven to be very useful tools used in research with many applications, such as enabling the study of entry pathways of enveloped viruses and to generate effective gene-delivery vectors...
December 5, 2016: Bio-protocol
https://www.readbyqxmd.com/read/28009529/high-prevalence-of-middle-east-respiratory-coronavirus-in-young-dromedary-camels-in-jordan
#20
Neeltje van Doremalen, Zaidoun S K Hijazeen, Peter Holloway, Bilal Al Omari, Chester McDowell, Danielle Adney, Hani A Talafha, Javier Guitian, John Steel, Nadim Amarin, Markos Tibbo, Ehab Abu-Basha, Ahmad M Al-Majali, Vincent J Munster, Juergen A Richt
Prevalence of Middle East respiratory syndrome coronavirus (MERS-CoV) was determined in 45 dromedary camels from two geographically separated herds in Jordan. Virus shedding was only detected in swabs obtained from the respiratory tract and primarily observed in camels younger than 3 years. MERS-CoV seroprevalence increased with age of camels. Bovine and sheep sera were seronegative. Phylogenetic analysis of partial S2 clustered the Jordanian MERS-CoV strains with contemporary MERS-CoV strains associated with nosocomial outbreaks...
February 2017: Vector Borne and Zoonotic Diseases
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