Entry: ME/CFS and Post-infective Fatigue Thursday, February 16, 2006

In 1988 the CDC with the problem post-EBV infection and similar conditions  that were occurring with increasing frequency. The UK had already grouped these under Myalgic Encephalomyelitis but the CDC arrived at the "catch all" Chronic Fatigue Syndrome and pushed the EBV factor to the background.
Well it never stayed there, numerous studies have been conducted since 1988 on this member of the Herpes family. Below is perhaps the latest with a newer term " Post-Infective Fatigue " ,  is this not  Post-Viral Chronic Fatigue Syndrome (G93.3)?
Read on
 Preliminary evidence of mitochondrial dysfunction associated with post-infective fatigue after acute infection with Epstein Barr Virus
Suzanne D Vernon , Toni Whistler , Barbara Cameron , Ian B Hickie , William C Reeves  and Andrew Lloyd
BMC Infectious Diseases 2006, 6:15     doi:10.1186/1471-2334-6-15
Published   31 January 2006

Abstract (provisional)

Acute infectious diseases are typically accompanied by non-specific symptoms including fever, malaise, irritability and somnolence that usually resolve on recovery. However, in some individuals these symptoms persist in what is commonly termed post-infective fatigue. The objective of this pilot study was to determine the gene expression correlates of post-infective fatigue following acute Epstein Barr virus (EBV) infection.
We followed 5 people with acute mononucleosis who developed post-infective fatigue of more than 6 months duration and 5 HLA-matched control subjects who recovered within 3 months. Subjects had peripheral blood mononuclear cell (PBMC) samples collected at varying time points including at diagnosis, then every 2 weeks for 3 months, then every 3 months for a year. Total RNA was extracted from the PBMC samples and hybridized to microarrays spotted with 3,800 oligonucleotides.
Those who developed post-infective fatigue had gene expression profiles indicative of an altered host response during acute mononucleosis compared to those who recovered uneventfully. Several genes including ISG20 (interferon stimulated gene), DNAJB2 (DnaJ [Hsp40] homolog and CD99), CDK8 (cyclin-dependent kinase 8), E2F2 (E2F transcription factor 2), CDK8 (cyclin-dependent kinase 8), and ACTN2 (actinin, alpha 2), known to be regulated during EBV infection, were differentially expressed in post-infective fatigue cases. Several of the differentially expressed genes affect mitochondrial functions including fatty acid metabolism and the cell cycle.
These preliminary data provide insights into alterations in gene transcripts associated with the varied clinical outcomes from acute infectious mononucleosis.
ME International

Chronic fatigue Syndrome


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