Methods for In Vivo and In Vitro Analysis of Innate Immune Responses to Helicobacter pylori Infection

Author(s):  
Milan K. Patel ◽  
Glennice N. Ryan ◽  
Anna M. Cerny ◽  
Evelyn A. Kurt-Jones
2020 ◽  
Vol 11 ◽  
Author(s):  
Gaël Auray ◽  
Stephanie C. Talker ◽  
Irene Keller ◽  
Sylvie Python ◽  
Markus Gerber ◽  
...  

2010 ◽  
Vol 138 (5) ◽  
pp. S-36
Author(s):  
Yvonne Junker ◽  
Donatella Barisani ◽  
Daniel A. Leffler ◽  
Towia Libermann ◽  
Simon T. Dillon ◽  
...  

2003 ◽  
Vol 124 (4) ◽  
pp. A335
Author(s):  
Stefan J. Wirtz ◽  
Christoph Becker ◽  
Edward E.S. Nieuwenhuis ◽  
Mark Birkenbach ◽  
Richard S. Blumberg ◽  
...  

2009 ◽  
Vol 9 (11) ◽  
pp. 1313-1322 ◽  
Author(s):  
Jill C. Graff ◽  
Emily M. Kimmel ◽  
Brett Freedman ◽  
Igor A. Schepetkin ◽  
Jeff Holderness ◽  
...  

Viruses ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1103 ◽  
Author(s):  
Luca D. Bertzbach ◽  
Olof Harlin ◽  
Sonja Härtle ◽  
Frank Fehler ◽  
Tereza Vychodil ◽  
...  

Marek’s disease virus (MDV) is an alphaherpesvirus that causes Marek’s disease, a malignant lymphoproliferative disease of domestic chickens. While MDV vaccines protect animals from clinical disease, they do not provide sterilizing immunity and allow field strains to circulate and evolve in vaccinated flocks. Therefore, there is a need for improved vaccines and for a better understanding of innate and adaptive immune responses against MDV infections. Interferons (IFNs) play important roles in the innate immune defenses against viruses and induce upregulation of a cellular antiviral state. In this report, we quantified the potent antiviral effect of IFNα and IFNγ against MDV infections in vitro. Moreover, we demonstrate that both cytokines can delay Marek’s disease onset and progression in vivo. Additionally, blocking of endogenous IFNα using a specific monoclonal antibody, in turn, accelerated disease. In summary, our data reveal the effects of IFNα and IFNγ on MDV infection and improve our understanding of innate immune responses against this oncogenic virus.


2011 ◽  
Vol 204 (7) ◽  
pp. 1104-1114 ◽  
Author(s):  
Juliene G. Co ◽  
Kenneth W. Witwer ◽  
Lucio Gama ◽  
M. Christine Zink ◽  
Janice E. Clements

2007 ◽  
Vol 75 (4) ◽  
pp. 2067-2070 ◽  
Author(s):  
Lisa R. Quin ◽  
Quincy C. Moore ◽  
Larry S. McDaniel

ABSTRACTThe pneumococcal virulence factors include capsule, PspA, PspC, and Ply. Cytometric analysis demonstrated that the greatest levels of C3 deposition were on a ΔplyPspA−PspC−mutant. Also, Ply, PspA, and PspC expression resulted in C3 degradation in vitro and in vivo. Finally, blood clearance assays demonstrated that there was enhanced clearance of ΔplyPspA−PspC−pneumococci compared to the clearance of nonencapsulated pneumococci.


2019 ◽  
Vol 218 (2) ◽  
pp. 700-721 ◽  
Author(s):  
Fang Niu ◽  
Ke Liao ◽  
Guoku Hu ◽  
Susmita Sil ◽  
Shannon Callen ◽  
...  

Cocaine is known to facilitate the transmigration of inflammatory leukocytes into the brain, an important mechanism underlying neuroinflammation. Pericytes are well-recognized as important constituents of the blood–brain barrier (BBB), playing a key role in maintaining barrier integrity. In the present study, we demonstrate for the first time that exposure of human brain vascular pericytes to cocaine results in enhanced secretion of CXCL10, leading, in turn, to increased monocyte transmigration across the BBB both in vitro and in vivo. This process involved translocation of σ-1 receptor (σ-1R) and interaction of σ-1R with c-Src kinase, leading to activation of the Src–PDGFR-β–NF-κB pathway. These findings imply a novel role for pericytes as a source of CXCL10 in the pericyte–monocyte cross talk in cocaine-mediated neuroinflammation, underpinning their role as active components of the innate immune responses.


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