4.2 Article

Chronic Fatigue Syndrome (CFS) and Cancer Related Fatigue (CRF): two fatigue syndromes with overlapping symptoms and possibly related aetiologies

Journal

NEUROMUSCULAR DISORDERS
Volume 22, Issue -, Pages S235-S241

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.nmd.2012.10.018

Keywords

Chronic Fatigue Syndrome; Cancer Related Fatigue; Xenotropic Murine Related Virus

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In July 2010, at the Muscle Fatigue Meeting, I presented an overview of Chronic Fatigue Syndrome and Cancer Related Fatigue, emphasizing a critical interpretation of the potential association between Chronic Fatigue Syndrome and Cancer Related Fatigue and a newly discovered retrovirus: Xenotropic Murine Related Virus. Since this association was hotly debated at that time, I suggested at the Meeting that it was wrong and most likely due to the identification of the wrong virus culprit. Today, 20 months after the Meeting, the first part of our prediction has turned out to be correct, as Xenotropic Murine Related Virus was shown to be a laboratory-created artefact. Still, the potential association of fatigue-syndromes with an infection (most likely viral) is sustained by a plethora of evidence and this overview will initially summarize data suggesting prior viral infection(s). The principal hypothesized mechanisms for both peripheral and central Chronic Fatigue Syndrome/Cancer Related Fatigue will be then summarized, also indicating plausible associations and triggering factors. All evidence accrued so far suggests that further research work should be performed in this interesting area and in order to identify an infectious agent for Chronic Fatigue Syndrome/Cancer Related Fatigue. One candidate RNA virus, Micro-Foci inducing Virus, will be described in this overview. (C) 2012 Elsevier B.V. All rights reserved.

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