نتایج جستجو برای: astrovirus

تعداد نتایج: 809  

Journal: :The Journal of general virology 2010
Rebecca Rivera Hendrik H Nollens Stephanie Venn-Watson Frances M D Gulland James F X Wellehan

Astroviruses are small, non-enveloped, positive-stranded RNA viruses. Previously studied mammalian astroviruses have been associated with diarrhoeal disease. Knowledge of astrovirus diversity is very limited, with only six officially recognized astrovirus species from mammalian hosts and, in addition, one human and some bat astroviruses were recently described. We used consensus PCR techniques ...

2011
Lori R. Holtz Irma K. Bauer Priya Rajendran Gagandeep Kang David Wang

Astroviruses are a known cause of human diarrhea. Recently the highly divergent astrovirus MLB1 (MLB1) was identified in a stool sample from a patient with diarrhea. It has subsequently been detected in stool from individuals with and without diarrhea. To determine whether MLB1 is associated with diarrhea, we conducted a case control study of MLB1. In parallel, the prevalence of the classic hum...

Journal: :Journal of clinical microbiology 2014
Ilias G Bouzalas Daniel Wüthrich Julia Walland Cord Drögemüller Andreas Zurbriggen Marc Vandevelde Anna Oevermann Rémy Bruggmann Torsten Seuberlich

Encephalitis is a frequently diagnosed condition in cattle with neurological diseases. Many affected animals present with a nonsuppurative inflammatory reaction pattern in the brain. While this pattern supports a viral etiology, the causative pathogen remains unknown in a large proportion of cases. Using viral metagenomics, we identified an astrovirus (bovine astrovirus [BoAstV]-CH13) in the br...

Journal: :Journal of virology 2012
Chao-Ting Xiao Patrick G Halbur Tanja Opriessnig

Astrovirus (AstV) infections are among the most common causes of gastroenteritis and are also associated with extraintestinal manifestations in humans and many animals. Herein, for the first time, the complete genome sequence of newly identified porcine astrovirus genotype 3 (PAstV3) strain US-MO123 was determined. Sequence comparison and phylogenetic analysis showed that PAstV3 has the closest...

Journal: :Journal of Hygiene 1982

2016
Xiaochun Wang Jinxin Wang Chenglin Zhou Shixing Yang Quan Shen Wen Zhang Dunwu Qi

BACKGROUND Human astroviruses (HAstVs) are commonly identified worldwide as important aetiological agents of acute gastroenteritis in all age groups. More and more evidences challenged the paradigm that AstV infections are species-specific. Yet to date, AstVs associated with human infections have not been detected in any animal hosts. RESULTS Viral metagenomics methods were used to detect vir...

2017
Carlos F. Arias Rebecca M. DuBois

Astroviruses are enterically transmitted viruses that cause infections in mammalian and avian species. Astroviruses are nonenveloped, icosahedral viruses comprised of a capsid protein shell and a positive-sense, single-stranded RNA genome. The capsid protein undergoes dramatic proteolytic processing both inside and outside of the host cell, resulting in a coordinated maturation process that aff...

Journal: :The Journal of general virology 2003
Christian Mittelholzer Kjell-Olof Hedlund Lena Englund Hans-Henrik Dietz Lennart Svensson

Pre-weaning diarrhoea is a well-known problem in mink farming in Europe, causing morbidity that varies between farms, regions and season. Different causalities for the disease have been proposed, but only most recently has a novel astrovirus been identified as an important risk factor. In this report, the molecular characterization, origin and evolution of this novel astrovirus of mink are disc...

2015
Royce L. York Payam A. Yousefi Walter Bogdanoff Sara Haile Sarvind Tripathi Rebecca M. DuBois

UNLABELLED Human astroviruses (HAstVs) are nonenveloped, positive-sense, single-stranded RNA viruses that are a leading cause of viral gastroenteritis. HAstV particles display T=3 icosahedral symmetry formed by 180 copies of the capsid protein (CP), which undergoes proteolytic maturation to generate infectious HAstV particles. Little is known about the molecular features that govern HAstV parti...

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