scholarly journals CD335 (NKp46)+ T-Cell Recruitment to the Bovine Upper Respiratory Tract during a Primary Bovine Herpesvirus-1 Infection

2017 ◽  
Vol 8 ◽  
Author(s):  
Rahwa A. Osman ◽  
Philip John Griebel
2004 ◽  
Vol 35 (6) ◽  
pp. 715-721 ◽  
Author(s):  
Sacha Gogev ◽  
Jean-Pierre Georgin ◽  
Fr�d�ric Schynts ◽  
Alain Vanderplasschen ◽  
Etienne Thiry

2016 ◽  
Vol 19 (4) ◽  
pp. 461-469 ◽  
Author(s):  
Mireia Fernandez ◽  
Edgar G Manzanilla ◽  
Albert Lloret ◽  
Marta León ◽  
Jean-Christophe Thibault

Objectives Our objective was to perform the first multicentric study in Spain to evaluate the prevalence of feline herpesvirus-1 (FHV-1), feline calicivirus (FCV), Chlamydophila felis and Mycoplasma felis in cats with upper respiratory tract disease (URTD), conjunctivitis and/or gingivostomatitis (GS) compared with control cats; and to evaluate risk factors for these clinical conditions. Methods Conjunctival and oropharyngeal swabs were collected and a questionnaire regarding signalment, lifestyle, vaccination history and clinical signs was obtained for each cat. Swabs were tested for each pathogen by real-time PCR. Results The study population consisted of 358 cats, including 98 control cats. Among the 260 diseased cats, 127 cats presented with URTD, 149 cats had conjunctivitis, 154 cats were suffering GS; many cats presented more than one clinical condition. The prevalence observed of FHV-1, FCV, C felis and M felis was, respectively, 28.3%, 48.0%, 20.5% and 46.5% in cats with URTD; 24.2%, 43.6%, 19.5% and 38.3% in cats with conjunctivitis; and 15.6%, 58.4%, 9.1% and 37.7% in cats with GS. Prevalences in the control group were 6.1%, 15.3%, 2.0% and 20.4%, respectively. Coinfections were common among all groups of cats. Risk factors were identified for all groups. FHV-1, FCV and C felis were associated with URTD and conjunctivitis. FCV was strongly associated with GS. M felis was present in a high percentage of the population in all groups, but its role in these clinical conditions remains uncertain. Vaccination was protective for URTD and GS but not for conjunctivitis. Conclusions and relevance This epidemiological study describes, for the first time, prevalence for FHV-1, FCV, C felis and M felis in Spain. In general, the prevalences found are similar to those reported in other countries. Factors associated with disease expression were also identified, which are relevant for practitioners.


2020 ◽  
Author(s):  
Jiangting Niu ◽  
Han Zhao ◽  
Shuang Zhang ◽  
Yanbing Guo ◽  
Qian Zhang ◽  
...  

Abstract Background: Feline herpesvirus-1 (FHV-1) is a most common virus that cause viral rhinotracheitis and ocular diseases in domestic cats and wild felids. As other alpha-herpesviruses, acute FHV-1 infection is responsible for severe upper respiratory tract and ocular disease, followed by lifelong latency that persist the limited virus in sensory neuronal cells. While latency reactivation can result in recrudescence, leading sever ocular lesions. Hence, FHV-1 infection in cats can be considered as a good natural host model to study alpha-herpesvirus pathogenesis. Results: In this study, the FHV-1 CH-B was isolated from nasal discharge collected from a British shorthair cat in China, and was further identified via transmission electron microscopy (TEM) observation, indirect immunofluorescence assay (IFA) and genome analysis. Experimental infection of domestic cats with different dose of isolate CH-B, ranging from 104 to 107 TCID50, showed that cats inoculated with 105 TCID50 not only showed typical upper respiratory track and ocular symptoms, but also could copy the progress of disease development. Therefore, the FHV-1 infection model was established by intranasally inoculated with 105 TCID50 of FHV-1 isolate CH-B. Infected cats began to show clinical signs at days 5 post inoculated (dpi), developed severe upper respiratory tract and ocular symptoms at 10-15 dpi, began to recover at 20 dpi, and recovered almost completely by 25 dpi. During acute infection period, virus mainly replicates in turbinate, conjunctiva, cornea and sensory neuronal cells, while virus only persists in trigeminal ganglia (TG) at lifelong latency. Viremia and viral infections in lungs do not appear in FHV-1 CH-B infected cats, with only one exception. We also demonstrate that FHV-1 CH-B infection can induce severe inflammatory responses and lung, trachea, and tonsils tissues damage in cats. In addition, we found that FHV-1 infected cats can shed virus via nasal and ocular discharge, resulting FHV-1 infection in in-contact cats. Conclusions: This natural host model of FHV-1 infection will be valuable for the screen and assessment of antiviral drugs and vaccines, as well as the studies of the pathogenesis of alpha-herpesvirus infection in animals and humans.


1988 ◽  
Vol 295 (2) ◽  
pp. 137-139 ◽  
Author(s):  
Akitsugu Masuda ◽  
Toshio Tsushima ◽  
Kazuo Shizume ◽  
Kenjiro Ohashi ◽  
Shunsuke Tanino ◽  
...  

1999 ◽  
Vol 73 (6) ◽  
pp. 4840-4846 ◽  
Author(s):  
Ximena Renjifo ◽  
Carine Letellier ◽  
Günther M. Keil ◽  
Jamila Ismaili ◽  
Alain Vanderplasschen ◽  
...  

ABSTRACT The aim of the present study was to develop an in vitro system for presentation of bovine herpesvirus 1 (BHV-1) antigens to bovine T lymphocytes and to characterize the antigen-presenting cells (APC) which efficiently activate CD4+ T cells. Two approaches were used to monitor the infection of APC by BHV-1 as follows: (i) detection of viral glycoproteins at the cell surface by immunofluorescence staining and (ii) detection of UL26 transcripts by reverse transcription-PCR. The monocytes were infected, while dendritic cells (DC) did not demonstrate any detectable viral expression. These data suggest that monocytes are one site of replication, while DC are not. The capacities of monocytes and DC to present BHV-1 viral antigens in vitro were compared. T lymphocytes (CD2+ or CD4+) from BHV-1 immune cattle were stimulated in the presence of APC previously incubated with live or inactivated wild-type BHV-1. DC stimulated strong proliferation of Ag-specific T cells, while monocytes were poor stimulators of T-cell proliferation. When viral attachment to the surface of the APC was inhibited by virus pretreatment with soluble heparin, T-cell proliferation was dramatically decreased. Unexpectedly, incubation of DC and monocytes with the deletion mutant BHV-1 gD−/−, which displays impaired fusion capacity, resulted in strong activation of T lymphocytes by both APC types. Collectively, these results indicate that presentation of BHV-1 antigens to immune T cells is effective in the absence of productive infection and suggest that BHV-1 gD−/− mutant virus could be used to induce virus-specific immune responses in cattle.


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