Altered cytokine release in peripheral blood mononuclear cell cultures from patients with the chronic fatigue syndrome

Cytokine ◽  
1991 ◽  
Vol 3 (4) ◽  
pp. 292-298 ◽  
Author(s):  
Chun C. Chao ◽  
Edward N. Janoff ◽  
Shuxian Hu ◽  
Kelly Thomas ◽  
Michael Gallagher ◽  
...  
Keyword(s):  
Chronic Fatigue Syndrome ◽  
Peripheral Blood Mononuclear Cell ◽  
Mononuclear Cell ◽  
Cell Cultures ◽  
Peripheral Blood ◽  
Chronic Fatigue ◽  
Cytokine Release ◽  
Peripheral Blood Mononuclear ◽  
Fatigue Syndrome

scholarly journals A SWATH-MS analysis of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome peripheral blood mononuclear cell proteomes reveals mitochondrial dysfunction

2020 ◽  
Author(s):  
Eiren Sweetman ◽  
Torsten Kleffmann ◽  
Christina Edgar ◽  
Michel de Lange ◽  
Rosamund Vallings ◽  
...  
Keyword(s):  
Chronic Fatigue Syndrome ◽  
Peripheral Blood ◽  
Mononuclear Cells ◽  
Chronic Fatigue ◽  
Myalgic Encephalomyelitis ◽  
Differentially Expressed ◽  
Control Group ◽  
Peripheral Blood Mononuclear ◽  
Fatigue Syndrome ◽  
Ms Analysis

Abstract Background: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a serious and complex physical illness that affects all body systems with a multiplicity of symptoms, but key hallmarks of the disease are pervasive fatigue and ‘post-exertional malaise’, exacerbation after physical and/or mental activity of the intrinsic fatigue and other symptoms that can be highly debilitating and last from days to months. Although the disease can vary widely between individuals, common symptoms also include pain, cognitive deficits, sleep dysfunction, as well as immune, neurological and autonomic symptoms. Typically, it is a very isolating illness socially, carrying a stigma because of the lack of understanding of the cause and pathophysiology.Methods: To gain insight into the pathophysiology of ME/CFS, we examined the proteomes of peripheral blood mononuclear cells (PBMCs) by SWATH-MS analysis in a small well-characterised group of patients and matched controls. A principal component analysis (PCA) was used to stratify groups based on protein abundance patterns, which clearly segregated the majority of the ME/CFS patients (9/11) from the controls. This majority subgroup of ME/CFS patients was then further compared to the control group. Results: A total of 60 proteins in the ME/CFS patients were differentially expressed (P < 0.01, Log10 (Fold Change) > 0.2 and < -0.2). Comparison of the PCA selected subgroup of ME/CFS patients (9/11) with controls increased the number of proteins differentially expressed to 99. Of particular relevance to the core symptoms of fatigue and post-exertional malaise experienced in ME/CFS, a proportion of the identified proteins in the ME/CFS groups were involved in mitochondrial function, oxidative phosphorylation, electron transport chain complexes, and redox regulation. A significant number were also involved in previously implicated disturbances in ME/CFS, such as the immune inflammatory response, DNA methylation, apoptosis and proteasome activation. Conclusions: The results from this study support a model of deficient ATP production in ME/CFS, compensated for by upregulation of immediate pathways upstream of Complex V that would suggest an elevation of oxidative stress. This study and others have found evidence of a distinct pathology in ME/CFS that holds promise for developing diagnostic biomarkers.

Sign in / Sign up

Export Citation Format

Share Document