Society Logo
ME/CFS Australia Ltd
Please click here to donate ME/CFS Australia (SA) Inc
 
 
Facebook
 
ME/CFS SOUTH AUSTRALIA INC

Registered Charity 3104

Email:
sacfs@sacfs.asn.au

Mailing address:

PO Box 322,
Modbury,
South Australia 5092

Phone:
1300 128 339

Office Hours:
Monday - Friday,
10am - 4pm
(phone)

ME/CFS South Australia Inc supports the needs of sufferers of Myalgic Encephalomyelitis, Chronic Fatigue Syndrome and related illnesses. We do this by providing services and information to members.

Disclaimer

ME/CFS South Australia Inc aims to keep members informed of various research projects, diets, medications, therapies, news items, etc. All communication, both verbal and written, is merely to disseminate information and not to make recommendations or directives.

Unless otherwise stated, the views expressed on this Web site are not necessarily the official views of the Society or its Committee and are not simply an endorsement of products or services.

Become a Member
DOCX Application Form (PDF, 156KB)
Why become a member?

Deficient EBV-specific B- and T-cell response in patients with CFS

Thursday 23 January 2014

 

From ProHealth:

 

Blood cells
 

Deficient EBV-Specific B- and T-Cell Response in Patients with Chronic Fatigue Syndrome

By Leonard A. Jason
Posted on Tuesday, January 21st, 2014 at 8:30 am

Editor's Comment: In this study, a subset of CFS patients was found to have an immune deficiency that allows Epstein-Barr virus (EBV) to replicate, even beyond the acute stage of the original infection. B-cells are the part of the immune system that "remembers" pathogens (viruses, bacteria, etc.) in order to mount attacks against future infections. The patients in this study showed an impaired B- and T-cell response to EBV, leading to latent virus reactivation. (EBV, like all herpesviruses, remains in the body forever.) The early theory that CFS is a form of "chronic mono" now appears to have substantiation.

Abstract

Epstein-Barr virus (EBV) has long been discussed as a possible cause or trigger of Chronic Fatigue Syndrome (CFS). In a subset of patients the disease starts with infectious mononucleosis and both enhanced and diminished EBV-specific antibody titers have been reported.

In this study, we comprehensively analyzed the EBV-specific memory B- and T-cell response in patients with CFS. While we observed no difference in viral capsid antigen (VCA)-IgG antibodies, EBV nuclear antigen (EBNA)-IgG titers were low or absent in 10% of CFS patients. Remarkably, when analyzing the EBV-specific memory B-cell reservoir in vitro a diminished or absent number of EBNA-1- and VCA-antibody secreting cells was found in up to 76% of patients. Moreover, the ex vivo EBV-induced secretion of TNF-alpha and IFN-gamma was significantly lower in patients.

Multicolor flow cytometry revealed that the frequencies of EBNA-1-specific triple TNF-alpha/IFN-gamma/IL-2 producing CD4+ and CD8+ T-cell subsets were significantly diminished whereas no difference could be detected for HCMV-specific T-cell responses. When comparing EBV load in blood immune cells, we found more frequently EBER-DNA but not BZLF-1 RNA in CFS patients compared to healthy controls suggesting more frequent latent replication.

Taken together, our findings give evidence for a deficient EBV-specific B- and T-cell memory response in CFS patients and suggest an impaired ability to control early steps of EBV reactivation. In addition the diminished EBV response might be suitable to develop diagnostic marker in CFS.

Source:Madlen Loebel, Kristin Strohschein, Carolin Giannini, Uwe Koelsch, Sandra Bauer, Cornelia Doebis, Sybill Thomas, Nadine Unterwalder, Volker von Baehr, Petra Reinke, Michael Knops, Leif G. Hanitsch, Christian Meisel, Hans-Dieter Volk, Carmen Scheibenbogen. Deficient EBV-Specific B- and T-Cell Response in Patients with Chronic Fatigue Syndrome.PLoS ONE 9(1): e85387. doi:10.1371/journal.pone.0085387.

 

The above originally appeared here.

 


 

blog comments powered by Disqus
Previous Previous Page