Deregulation of the 2,5A Synthetase Rnase L Antiviral pathway by Mycoplasma spp. in subsets of chronic fatigue syndrome

Abstract

The deregulation of the 2,5A synthetase RNase L antiviral pathway and the prevalence of Mycoplasma spp. in subsets of Chronic Fatigue Syndrome (CFS) have been separately reported in the scientific literature. We hypothesised that a co-morbid pathophysiological mechanism involving infection by Mycoplasma spp. and the deregulation of the 2,5A synthetase/RNase L antiviral pathway may exist in CFS. Therefore, 186 consecutive CFS patients were enrolled. Mycoplasma detection was performed using forensic polymerase chain reaction. For RNase L determination, a radioactive probe was used to label 2,5A binding proteins in unfractionated peripheral blood mononuclear cell extracts. Myco-plasma-infected CFS patients presented with significantly elevated RNase L-ratio, compared to non-infected age- and sex-matched patients (p = 0.016). These results suggest that mycoplasma infections may cause deregulation of the 2,5A synthetase RNase L antiviral pathway in patients with CFS