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- Title
A possible role for mitochondrial-derived peptides humanin and MOTS-c in patients with Q fever fatigue syndrome and chronic fatigue syndrome.
- Authors
Raijmakers, Ruud P. H.; Jansen, Anne F. M.; Keijmel, Stephan P.; ter Horst, Rob; Roerink, Megan E.; Novakovic, Boris; Joosten, Leo A. B.; van der Meer, Jos W. M.; Netea, Mihai G.; Bleeker-Rovers, Chantal P.
- Abstract
<bold>Background: </bold>Q fever fatigue syndrome (QFS) is a well-documented state of prolonged fatigue following around 20% of acute Q fever infections. It has been hypothesized that low grade inflammation plays a role in its aetiology. In this study, we aimed to identify transcriptome profiles that could aid to better understand the pathophysiology of QFS.<bold>Methods: </bold>RNA of monocytes was collected from QFS patients (n = 10), chronic fatigue syndrome patients (CFS, n = 10), Q fever seropositive controls (n = 10), and healthy controls (n = 10) who were age- (± 5 years) and sex-matched. Transcriptome analysis was performed using RNA sequencing.<bold>Results: </bold>Mitochondrial-derived peptide (MDP)-coding genes MT-RNR2 (humanin) and MT-RNR1 (MOTS-c) were differentially expressed when comparing QFS (- 4.8 log2-fold-change P = 2.19 × 10-9 and - 4.9 log2-fold-change P = 4.69 × 10-8), CFS (- 5.2 log2-fold-change, P = 3.49 × 10-11 - 4.4 log2-fold-change, P = 2.71 × 10-9), and Q fever seropositive control (- 3.7 log2-fold-change P = 1.78 × 10-6 and - 3.2 log2-fold-change P = 1.12 × 10-5) groups with healthy controls, resulting in a decreased median production of humanin in QFS patients (371 pg/mL; Interquartile range, IQR, 325-384), CFS patients (364 pg/mL; IQR 316-387), and asymptomatic Q fever seropositive controls (354 pg/mL; 292-393).<bold>Conclusions: </bold>Expression of MDP-coding genes MT-RNR1 (MOTS-c) and MT-RNR2 (humanin) is decreased in CFS, QFS, and, to a lesser extent, in Q fever seropositive controls, resulting in a decreased production of humanin. These novel peptides might indeed be important in the pathophysiology of both QFS and CFS.
- Subjects
Q fever; CHRONIC fatigue syndrome; RNA sequencing; PROTEIN metabolism; COMPARATIVE studies; FACTOR analysis; GENES; RESEARCH methodology; MEDICAL cooperation; MITOCHONDRIA; RESEARCH; EVALUATION research; SIGNAL peptides
- Publication
Journal of Translational Medicine, 2019, Vol 17, Issue 1, pN.PAG
- ISSN
1479-5876
- Publication type
journal article
- DOI
10.1186/s12967-019-1906-3