International Meetings, WVPA Matters, Announcements.

International Meetings, WVPA Matters, Announcements. Avian Pathol. 2015 Dec;44(6):517 Authors: PMID: 26642744 [PubMed - in process]
Source: Avian Pathology - Category: Pathology Tags: Avian Pathol Source Type: research

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Most Salmonella serovars cause disease in many host species, while a few serovars have evolved to be host specific. Very little is known about the mechanisms that contribute to Salmonella host specificity. We compared the interactions between chicken primary macrophages (CDPM) and host-generalist serovar Salmonella enterica serovar Typhimurium, host-adapted Salmonella enterica serovar Dublin, and avian host-specific Salmonella enterica serovar Gallinarum. S. Gallinarum was taken up in lower numbers by CDPM than S. Typhimurium and S. Dublin; however, a higher survival rate was observed for this serovar. In addition, S. Typh...
Source: Infection and Immunity - Category: Infectious Diseases Authors: Tags: Bacterial Infections Source Type: research
Extraintestinal pathogenic Escherichia coli (ExPEC) is an important human and animal pathogen. Despite the apparent similarities in their known virulence attributes, some ExPEC strains can cross the host species barrier and present a zoonotic potential, whereas other strains exhibit host specificity, suggesting the existence of unknown mechanisms that remain to be identified. We applied a transposon-directed insertion site sequencing (TraDIS) strategy to investigate the ExPEC XM strain, which is capable of crossing the host species barrier, and to screen for virulence-essential genes in both mammalian (mouse) and avian (du...
Source: Infection and Immunity - Category: Infectious Diseases Authors: Tags: Bacterial Infections Source Type: research
Linton Koray Ergünay We obtained a Jingmen tick virus (JMTV) isolate, following inoculation of a tick pool with detectable Crimean-Congo hemorrhagic fever virus (CCHFV) RNA. We subsequently screened 7223 ticks, representing 15 species in five genera, collected from various regions in Anatolia and eastern Thrace, Turkey. Moreover, we tested specimens from various patient cohorts (n = 103), and canine (n = 60), bovine (n = 20) and avian specimens (n = 65). JMTV nucleic acids were detected in 3.9% of the tick pools, including those from several tick species from the genera Rhipicephalus and Haemaphysalis, and Hyalo...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Publication date: Available online 14 November 2019Source: Molecular Phylogenetics and EvolutionAuthor(s): Sylvain G. Razafimandimbison, Kent Kainulainen, Bruno Senterre, Charles Morel, Catarina RydinAbstractThe granitic islands of the Seychelles harbor about 268 native angiosperm species, with 28% being endemics there. The Seychelles biota contains a mix of ancient taxa with Gondwanan origins and young taxa that arrived there via dispersals. We investigate the phylogenetic position of an enigmatic, critically endangered, Seychellean endemic of the coffee family (Rubiaceae), Psathura/Psychotria sechellarum, and assess whet...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research
Authors: Kim HC, Hong EJ, Ryu SY, Park J, Yu DH, Chae JS, Choi KS, Sim C, Park BK Abstract Avian trematodes, Urogonimus turdi (Digenea: Leucochloridiidae), were collected from the intestine of wild birds, Zoothera aurea, 2013-2017 in the Daejeon Metropolitan City, Korea. The body was ellipsoidal, attenuated and/or round ends, 1,987-2,120 long and 819-831 µm wide. The oral sucker was subterminal, rounded anteriorly, and 308- 425×351-432 µm in size; the prepharynx and esophagus were almost lacking; pharynx was well-developed, 142- 179×78-170 µm in size; intestine narrow, bifurcating just...
Source: Korean Journal of Parasitology - Category: Parasitology Tags: Korean J Parasitol Source Type: research
o Kawaoka Viral neuraminidase inhibitors show limited efficacy in mice infected with H7N9 influenza A viruses isolated from humans. Although baloxavir marboxil protected mice from lethal challenge infection with a low pathogenic avian influenza H7N9 virus isolated from a human, its efficacy in mice infected with a recent highly pathogenic version of H7N9 human isolates is unknown. Here, we examined the efficacy of baloxavir marboxil in mice infected with a highly pathogenic human H7N9 virus, A/Guangdong/17SF003/2016. Treatment of infected mice with a single 1.5 mg/kg dose of baloxavir marboxil protected mice from the h...
Source: Viruses - Category: Virology Authors: Tags: Communication Source Type: research
Review in-depth clinical information, latest medical news, and guidelines on influenza virus and H1N1. Review management of flu symptoms using flu treatment for swine flu, bird flu, and other types of influenza.
Source: Medscape Today Headlines - Category: Consumer Health News Tags: Resource Center Source Type: news
Publication date: January 2020Source: Molecular Immunology, Volume 117Author(s): Dejian Liu, Huijun Zheng, Yaqian Li, Peng Zhou, Hui Jin, Rui LuoAbstractJanus kinase 1 (JAK1) is a member of JAK family of non-receptor protein tyrosine kinases that plays critical roles in transducing cytokine signals via JAK-signal transducer and activator of transcription (STAT) signaling pathway. The importance of JAK1 in innate immunity has been well-studied in mammals and fish, yet in avian remains largely unknown. Here, we cloned the full-length of the duck JAK1 (duJAK1) gene for the first time. DuJAK1 encoded a protein of 1152 amino ac...
Source: Molecular Immunology - Category: Allergy & Immunology Source Type: research
This study provides evidence that the commonly observed pattern of ticks feeding on songbirds' heads is the result of an adaptive behavioural strategy. Experimental data on a novel host species, the domestic canary, and a consistent number of published field observations, strongly support this hypothesis. We address some proximate and ultimate causes that may explain parasite preference for this body part in songbirds. The link found between parasite micro-habitat preference and host anti-parasite behaviour provides further insight into the mechanisms driving ectoparasite aggregation, which is important for the population ...
Source: International Journal for Parasitology - Category: Parasitology Authors: Tags: Int J Parasitol Source Type: research
Publication date: Available online 12 November 2019Source: Veterinary MicrobiologyAuthor(s): Sahar Rostami, Jalil Mehrzad, Ramak Yahyaraeyat, Taghi Zahraei SalehiAbstractSalmonella enterica Subsp enterica serovar Typhimurium (S. Typhimurium, ST) is one of the most important serovars of the genus Salmonella in human and animals. Because of its intracellular tropism, monocytes/macrophages are pivotal in killing of Salmonella serovars; they are also responsible for transporting of ST to extra-intestinal organs. To investigate the effect of the ST on the functions of avian innate immune cells, almost homogeneous enriched monoc...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
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