All Journals > The Journal of Infectious Diseases > 15 July 2005 > Effects of Eap on PBMCs

Article Tools

Search for Related Articles

  • By Author
  • Search In

Announcements

Science Watch logo

JID Article Named "New Hot Paper" by ScienceWatch.com

Dr. Lauri Hicks' 2007 article on pneumococcal disease has been named a "hot new paper" by Thompson Reuters' ScienceWatch.com. Read a Q&A about the article with Dr. Hicks here. 

Press Release

Unique Collaboration Charts the Migrations of a Parasite that Affected History
Researchers Sequence Louse DNA from Mummies and Propose New Model for its Development


In the News

Featured in Grist
"Another symptom of swine flu: instant amnesia" May 11, 2009
Swine Influenza Virus: Zoonotic Potential and Vaccination Strategies for the Control of Avian and Swine Influenzas
Eileen Thacker and Bruce Janke
Read the veterinary literature on swine flu and you get a strong sense of what might be called vaccination treadmill: the hog industry is literally scrambling to generate new vaccines for the rapidly evolving flu strains that sweep through CAFOs. Writing in the Journal of Infectious Diseases [PDF] in 2008, Eileen Thacker and Bruce Janke of Iowa State University paint a stark picture: “A number of genetically diverse viruses are circulating in swine herds throughout the world and are a major cause of concern to the swine industry,” they write. “Influenza virus infections in swine and poultry are potential sources of viruses for the next pandemic among humans.”

Featured in New York Times
"Fear of a Swine Flu Epidemic in 1976 Offers Some Lessons, and Concerns, Today" May 8, 2009
Anti‐Ganglioside Antibody Induction by Swine (A/NJ/1976/H1N1) and Other Influenza Vaccines: Insights into Vaccine‐Associated Guillain‐Barré Syndrome
Irving Nachamkin, Sean V. Shadomy, Anthony P. Moran, Nancy Cox, Collette Fitzgerald, Huong Ung, Adrian T. Corcoran, John K. Iskander, Lawrence B. Schonberger, and Robert T. Chen
Irving Nachamkin, a professor of pathology and laboratory medicine at the University of Pennsylvania, examined some 1976 vaccine that had been saved by a scientist in Texas. In a paper published last year in The Journal of Infectious Diseases, he and colleagues reported that mice given the vaccine made antibodies that reacted with gangliosides, which are components of nerve cells. An antibody attack on gangliosides is part of the disease mechanism of Guillain-Barré.

Featured in AFP
"Swine flu vaccine 'could be ready soon'" May 7, 2009
A Broadly Protective Vaccine against Globally Dispersed Clade 1 and Clade 2 H5N1 Influenza Viruses
Mary A. Hoelscher, Neetu Singh, Sanjay Garg, Lakshmi Jayashankar, Vic Veguilla, Aseem Pandey, Yumi Matsuoka, Jacqueline M. Katz, Ruben Donis, Suresh K. Mittal, and Suryaprakash Sambhara
The vaccine Mittal created for the bird flu worked on three different strains isolated over a seven-year period and was described in papers for the Journal of Infectious Diseases and the journal Clinical Pharmacology and Therapeutics.

Featured in Newsweek
"The Path of a Pandemic" http://www.newsweek.com/id/195692
Swine Influenza Virus: Zoonotic Potential and Vaccination Strategies for the Control of Avian and Swine Influenzas
Eileen Thacker and Bruce Janke
Last year researchers from Iowa State University in Ames warned that pigs located in industrial-scale farms were being subjected to influenza infections from farm poultry, wild birds and their human handlers. Writing in The Journal of Infectious Diseases, Eileen Thacker and Bruce Janke said, "As a result of the constantly changing genetic makeup of individual influenza viruses in pigs, the U.S. swine industry is continually scrambling to respond to the influenza viruses circulating within individual production systems."

15 July 2005

Volume 192, Number 2
The Journal of Infectious Diseases 2005;192:210–217
© 2005 by the Infectious Diseases Society of America. All rights reserved.
0022-1899/2005/19202-0004$15.00
DOI: 10.1086/430948
MAJOR ARTICLE

Dual Effects of Extracellular Adherence Protein from Staphylococcus aureus on Peripheral Blood Mononuclear Cells

Axana Haggar,1

Oonagh Shannon,1

Anna Norrby‐Teglund,2 and

Jan‐Ingmar Flock1

Departments of 1Laboratory Medicine and 2Medicine, Karolinska Institutet, Huddinge University Hospital, Stockholm, Sweden

Extracellular adherence protein (Eap) has been suggested as an important virulence factor of Staphylococcus aureus because it enhances bacterial adherence and internalization into eukaryotic cells, interference with T cells, and neutrophil adherence to endothelial cells. We demonstrate that Eap has dual effects on peripheral blood mononuclear cells, depending on its concentration. At low concentrations (up to 9 μg/mL), Eap induces a proliferative response; at higher concentrations, it causes a significant inhibition of T cell proliferation induced by S. aureus supernatants toxic shock syndrome toxin–1 or phytohemagglutinin. A marked increase in apoptotic (i.e., Annexin V and propidium iodide positive) T and B cells could be demonstrated after exposure to the inhibitory concentration of Eap. Human anti–Eap antibodies prepared from polyspecific immunoglobulin G (IgG) blocked the immunomodulatory effects of Eap. Our results demonstrate novel immunomodulatory activities of Eap and identify potential mechanisms of action of intravenous IgG therapy in the treatment of S. aureus infections.

Received 16 September 2004; accepted 24 February 2005; electronically published 13 June 2005.

Reprints and correspondence: Dr. Jan‐Ingmar Flock, Karolinska Institutet, Dept. of Laboratory Medicine, Division of Clinical Bacteriology, Huddinge University Hospital, F 82, SE‐141 86 Stockholm, Sweden ().

Cited by

Timothy J. Foster. (2006) Immune evasion by staphylococci. Nature Reviews Microbiology 3:12, 948-958
Online publication date: 1-Jan-2006.
CrossRef

  • Financial support: The Swedish Research Council (grants 12218 to J.‐I.F. and 12610 to A.N.‐T.); Biostapro AB; Swedish Foundation for Strategic Research (grant A3 02:098).

Back to Top
Close Popup