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https://www.readbyqxmd.com/read/28091625/mplex-a-method-for-simultaneous-pathogen-inactivation-and-extraction-of-samples-for-multi-omics-profiling
#1
Kristin E Burnum-Johnson, Jennifer E Kyle, Amie J Eisfeld, Cameron P Casey, Kelly G Stratton, Juan F Gonzalez, Fabien Habyarimana, Nicholas M Negretti, Amy C Sims, Sadhana Chauhan, Larissa B Thackray, Peter J Halfmann, Kevin B Walters, Young-Mo Kim, Erika M Zink, Carrie D Nicora, Karl K Weitz, Bobbie-Jo M Webb-Robertson, Ernesto S Nakayasu, Brian Ahmer, Michael E Konkel, Vladimir Motin, Ralph S Baric, Michael S Diamond, Yoshihiro Kawaoka, Katrina M Waters, Richard D Smith, Thomas O Metz
The continued emergence and spread of infectious agents is of great concern, and systems biology approaches to infectious disease research can advance our understanding of host-pathogen relationships and facilitate the development of new therapies and vaccines. Molecular characterization of infectious samples outside of appropriate biosafety containment can take place only subsequent to pathogen inactivation. Herein, we describe a modified Folch extraction using chloroform/methanol that facilitates the molecular characterization of infectious samples by enabling simultaneous pathogen inactivation and extraction of proteins, metabolites, and lipids for subsequent mass spectrometry-based multi-omics measurements...
January 16, 2017: Analyst
https://www.readbyqxmd.com/read/28077633/surveillance-of-bat-coronaviruses-in-kenya-identifies-relatives-of-human-coronaviruses-nl63-and-229e-and-their-recombination-history
#2
Ying Tao, Mang Shi, Christina Chommanard, Krista Queen, Jing Zhang, Wanda Markotter, Ivan V Kuzmin, Edward C Holmes, Suxiang Tong
: Bats harbor a large diversity of coronaviruses (CoVs), several of which are related to zoonotic pathogens that cause severe disease in humans. Our screening of bat samples collected in Kenya during 2007-2010 not only detected RNA from several novel CoVs but, more significantly, identified sequences that were closely related to human CoVs NL63 and 229E, suggesting that these two human viruses originate from bats. We also demonstrated that human CoV NL63 is a recombinant between NL63-like viruses circulating in Triaenops bats and 229E-like viruses circulating in Hipposideros bats, with the break-point located near 5' and 3' end of the spike (S) protein gene...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28067571/middle-east-respiratory-syndrome-coronavirus-mers-cov-infection
#3
Reem S Almaghrabi, Ali S Omrani
Middle East respiratory syndrome coronavirus was first described in 2012. More than 1800 cases have been reported so far, the majority from countries in the Middle East region. This article outlines current understanding of the epidemiological and clinical features of Middle East respiratory syndrome coronavirus infection.
January 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/28057317/factors-influencing-emergency-nurses-burnout-during-an-outbreak-of-middle-east-respiratory-syndrome-coronavirus-in-korea
#4
Ji Soo Kim, Jeong Sil Choi
PURPOSE: Emergency department (ED) nurses suffer from persistent stress after experiencing the traumatic event of exposure to Middle East respiratory syndrome coronavirus (MERS-CoV), which can subsequently lead to burnout. This study aimed to assess ED nurses' burnout level during an outbreak of MERS-CoV and to identify influencing factors in order to provide basic information for lowering and preventing the level of burnout. METHODS: Study participants were ED nurses working in eight hospitals designated for treating MERS-CoV-infected patients in Korea...
December 2016: Asian Nursing Research
https://www.readbyqxmd.com/read/28056850/outbreak-of-middle-east-respiratory-syndrome-coronavirus-in-saudi-arabia-a-retrospective-study
#5
Fadilah Sfouq Aleanizy, Nahla Mohmed, Fulwah Y Alqahtani, Rania Ali El Hadi Mohamed
BACKGROUND: The Middle East respiratory syndrome (MERS) is proposed to be a zoonotic disease. Dromedary camels have been implicated due to reports that some confirmed cases were exposed to camels. Risk factors for MERS coronavirus (MERS-CoV) infections in humans are incompletely understood. This study aimed to describe the demographic characteristics, mortality rate, clinical manifestations and comorbidities with confirmed cases of MERS-CoV. METHODS: Retrospective chart review were performed to identify all laboratory-confirmed cases of MERS-CoV in Saudi Arabia who reported to the Ministry of Health (MOH) of Saudi Arabia and WHO between April 23, 2014 and August 31, 2015...
January 5, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28050021/systematic-active-surveillance-for-middle-east-respiratory-syndrome-coronavirus-in-camels-in-egypt
#6
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
#7
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
#8
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-sam-to-mers-cov-2-o-methyltransferase-nsp16-promotes-the-recruitment-of-the-allosteric-activator-nsp10
#9
Wahiba Aouadi, Alexandre Blanjoie, Jean-Jacques Vasseur, Françoise Debart, Bruno Canard, Etienne Decroly
: The Middle East respiratory syndrome coronavirus (MERS-CoV) non-structural protein 16 (nsp16) is an S-adenosyl-L-methionine (SAM)-dependent 2' -O-methyltransferase (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...
December 28, 2016: Journal of Virology
https://www.readbyqxmd.com/read/28018942/murine-leukemia-virus-mlv-based-coronavirus-spike-pseudotyped-particle-production-and-infection
#10
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
#11
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...
December 23, 2016: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28003490/lineage-a-betacoronavirus-ns2-proteins-and-homologous-torovirus-berne-pp1a-carboxyterminal-domain-are-phosphodiesterases-that-antagonize-activation-of-rnase-l
#12
Stephen A Goldstein, Joshua M Thornbrough, Rong Zhang, Babal K Jha, Yize Li, Ruth Elliott, Katherine Quiroz-Figueroa, Annie I Chen, Robert H Silverman, Susan R Weiss
: Viruses in the family Coronaviridae, with the Nidovirus order, are etiologic agents of a range of human and animal diseases, including both mild and severe respiratory disease in humans. These viruses encode conserved replicase and structural proteins, and more diverse accessory proteins in the 3' end of their genomes that often act as host cell antagonists. We have previously shown that 2', 5' phosphodiesterases (PDE) encoded by the prototypical Betacoronavirus, mouse hepatitis virus (MHV), Middle East respiratory syndrome-associated coronavirus antagonize the oligoadenylate - ribonuclease L (OAS-RNase L) pathway...
December 21, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27999426/a-camel-derived-mers-cov-with-a-variant-spike-protein-cleavage-site-and-distinct-fusion-activation-properties
#13
Jean Kaoru Millet, Monty E Goldstein, Rachael N Labitt, Hung-Lun Hsu, Susan Daniel, Gary R Whittaker
Middle East respiratory syndrome coronavirus (MERS-CoV) continues to circulate in both humans and camels, and the origin and evolution of the virus remain unclear. Here we characterize the spike protein of a camel-derived MERS-CoV (NRCE-HKU205) identified in 2013, early in the MERS outbreak. NRCE-HKU205 spike protein has a variant cleavage motif with regard to the S2' fusion activation site-notably, a novel substitution of isoleucine for the otherwise invariant serine at the critical P1' cleavage site position...
December 21, 2016: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/27999424/polyphyletic-origin-of-mers-coronaviruses-and-isolation-of-a-novel-clade-a-strain-from-dromedary-camels-in-the-united-arab-emirates
#14
Susanna K P Lau, Renate Wernery, Emily Y M Wong, Sunitha Joseph, Alan K L Tsang, Nissy Annie Georgy Patteril, Shyna K Elizabeth, Kwok-Hung Chan, Rubeena Muhammed, Jöerg Kinne, Kwok-Yung Yuen, Ulrich Wernery, Patrick C Y Woo
Little is known regarding the molecular epidemiology of Middle East respiratory syndrome coronavirus (MERS-CoV) circulating in dromedaries outside Saudi Arabia. To address this knowledge gap, we sequenced 10 complete genomes of MERS-CoVs isolated from 2 live and 8 dead dromedaries from different regions in the United Arab Emirates (UAE). Phylogenetic analysis revealed one novel clade A strain, the first detected in the UAE, and nine clade B strains. Strain D998/15 had a distinct phylogenetic position within clade A, being more closely related to the dromedary isolate NRCE-HKU205 from Egypt than to the human isolates EMC/2012 and Jordan-N3/2012...
December 21, 2016: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/27966107/the-middle-east-respiratory-syndrome-coronavirus-a-continuing-risk-to-global-health-security
#15
Esam I Azhar, Simone Lanini, Giuseppe Ippolito, Alimuddin Zumla
Two new zoonotic coronaviruses causing disease in humans (Zumla et al. 2015a; Hui and Zumla 2015; Peiris et al. 2003; Yu et al. 2014) have been the focus of international attention for the past 14 years due to their epidemic potential; (1) The Severe Acute Respiratory Syndrome coronavirus (SARS-CoV) (Peiris et al. 2003) first discovered in China in 2001 caused a major global epidemic of the Severe Acute Respiratory Syndrome (SARS). (2) The Middle East respiratory syndrome coronavirus (MERS-CoV) is a new corona virus isolated for the first time in a patients who died of severe lower respiratory tract infection in Jeddah (Saudi Arabia) in June 2012 (Zaki et al...
December 14, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27956136/prophylactic-and-therapeutic-intranasal-administration-with-an-immunomodulator-hiltonol-%C3%A2-poly-ic-lc-in-a-lethal-sars-cov-infected-balb-c-mouse-model
#16
Yohichi Kumaki, Andres M Salazar, Miles K Wandersee, Dale L Barnard
Hiltonol(®), (Poly IC:LC), a potent immunomodulator, is a synthetic, double-stranded polyriboinosinic-polyribocytidylic acid (poly IC) stabilized with Poly-L-lysine and carboxymethyl cellulose (LC). Hiltonol(®) was tested for efficacy in a lethal SARS-CoV-infected BALB/c mouse model. Hiltonol(®) at 5, 1, 0.5 or 0.25 mg/kg/day by intranasal (i.n.) route resulted in significant survival benefit when administered at selected times 24 h prior to challenge with a lethal dose of mouse-adapted severe acute respiratory syndrome coronavirus (SARS-CoV)...
December 9, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27940937/risk-factors-for-transmission-of-middle-east-respiratory-syndrome-coronavirus-infection-during-the-2015-outbreak-in-south-korea
#17
Seung Woo Kim, Jung Wan Park, Hee-Dong Jung, Jeong-Sun Yang, Yong-Shik Park, Changhwan Lee, Kyung Min Kim, Keon-Joo Lee, Donghyok Kwon, Young Joo Hur, Bo Youl Choi, Moran Ki
BACKGROUND: Transmission heterogeneity was observed during the 2015 South Korean outbreak of Middle East respiratory syndrome coronavirus (MERS-CoV) infection. Only 22 of 186 cases transmitted the infection, and 5 super-spreading events caused 150 transmissions. We investigated the risk factors for MERS-CoV transmission. METHODS: Epidemiological reports were used to classify patients as non-spreaders, spreaders (1-4 transmission), or those associated with super-spreading event (≥4 transmissions)...
December 10, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27937060/update-on-therapeutic-options-for-middle-east-respiratory-syndrome-coronavirus-mers-cov
#18
Jaffar A Al-Tawfiq, Ziad A Memish
The Middle East Respiratory Syndrome Coronavirus (MERS-CoV) is an important emerging respiratory pathogen. MERS-CoV resulted in multiple hospital outbreaks within and outside the Arabian Peninsula. The disease has a high case fatality rate, with the need for a therapeutic option. Areas covered: In this review, we provide an overview of the progress in the development of therapeutic strategies for MERS. We searched PubMed, Embase, Cochrane, Scopus, and Google Scholar, using the following terms: 'MERS', 'MERS-CoV', 'Middle East respiratory syndrome' in combination with 'treatment' or 'therapy'...
December 24, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27936982/mers-cov-spike-protein-a-key-target-for-antivirals
#19
Lanying Du, Yang Yang, Yusen Zhou, Lu Lu, Fang Li, Shibo Jiang
The continual Middle East respiratory syndrome (MERS) threat highlights the importance of developing effective antiviral therapeutics to prevent and treat MERS coronavirus (MERS-CoV) infection. A surface spike (S) protein guides MERS-CoV entry into host cells by binding to cellular receptor dipeptidyl peptidase-4 (DPP4), followed by fusion between virus and host cell membranes. MERS-CoV S protein represents a key target for developing therapeutics to block viral entry and inhibit membrane fusion. Areas covered: This review illustrates MERS-CoV S protein's structure and function, particularly S1 receptor-binding domain (RBD) and S2 heptad repeat 1 (HR1) as therapeutic targets, and summarizes current advancement on developing anti-MERS-CoV therapeutics, focusing on neutralizing monoclonal antibodies (mAbs) and antiviral peptides...
December 21, 2016: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/27933782/integration-of-global-analyses-of-host-molecular-responses-with-clinical-data-to-evaluate-pathogenesis-and-advance-therapies-for-emerging-and-re-emerging-viral-infections
#20
Shane D Falcinelli, Daniel S Chertow, Jason Kindrachuk
Outbreaks associated with emerging and re-emerging viral pathogens continue to increase in frequency and are associated with an increasing burden to global health. In light of this, there is a need to integrate basic and clinical research for investigating the connections between molecular and clinical pathogenesis and for therapeutic development strategies. Here, we will discuss this approach with a focus on the emerging viral pathogens Middle East respiratory syndrome coronavirus (MERS-CoV), Ebola virus (EBOV), and monkeypox virus (MPXV) from the context of clinical presentation, immunological and molecular features of the diseases, and OMICS-based analyses of pathogenesis...
November 11, 2016: ACS Infectious Diseases
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