Related Experiment Video
Updated: Aug 9, 2026
Evaluating the Role of Mitochondrial Function in Cancer-related Fatigue
Published on: May 17, 2018
A comprehensive immunological analysis in chronic fatigue syndrome
1Division of Basic and Clinical Immunology, University of California, Irvine 92717.
Insights
Chronic fatigue syndrome (CFS) patients show reduced natural killer cells and impaired specific antibody responses, indicating immune system dysfunction. Further research is needed to understand the immunological basis of CFS.
Area of Science:
- Immunology
- Virology
Background:
- Chronic Fatigue Syndrome (CFS) is a complex condition with debated immunological underpinnings.
- Understanding immune system alterations in CFS is crucial for diagnosis and treatment.
Purpose of the Study:
- To investigate cell-mediated and antibody-mediated immunity in patients with CFS.
- To compare immune cell profiles and function between CFS patients and healthy controls.
Main Methods:
- Analysis of lymphocyte subsets (CD3+, CD4+, CD8+, CD20+, CD16+, CD56+, CD57+).
- Assessment of monocyte adhesion molecule expression (ICAM-1, LFA-1) and interferon-gamma response.
- Evaluation of lymphocyte DNA synthesis and in vivo antibody response to pneumococcus vaccine.
- Measurement of serum immunoglobulin levels and anti-HHV-6 antibody titers.
Main Results:
- CFS patients exhibited significantly reduced natural killer cells and increased CD4+ ICAM-1+ T cells.
- Monocytes in CFS showed altered ICAM-1 and LFA-1 expression and reduced response to interferon-gamma.
- Impaired in vivo specific antibody response to pneumococcus vaccine was observed in CFS patients.
- Elevated anti-HHV-6 antibody titers were found in 40% of CFS patients.
Conclusions:
- The study suggests significant immunological dysfunction in CFS patients.
- Specific deficits in natural killer cell function and antibody production point to immune system abnormalities in CFS.
Abstract:
A detailed analysis of cell-mediated and antibody-mediated immunity was performed in 20 CDC-defined patients with chronic fatigue syndrome (CFS) and 20 age- and sex-matched healthy controls. CD3+, CD4+, CD8+, and CD20+ lymphocytes were comparable in two groups. Natural killer cells as defined by CD16, CD56 and CD57 antigens were significantly reduced in CFS. A significant increase in the proportions of CD4+ ICAM 1+ T cells was observed in CFS. Monocytes from CFS displayed increased density (as determined by mean fluorescence channel numbers) of intercellular adhesion molecule 1 (ICAM-1) and lymphocyte function associated antigen 1 (LFA-1), but showed decreased enhancing response to recombinant interferon-gamma in vitro. The lymphocyte DNA synthesis in response to phytohaemoglobulin (PHA), Concanavalin A (Con A) and pokeweed mitogen (PWM) was normal but the response to soluble antigens was significantly reduced. Serum IgM, IgG, IgA, and IgG subclasses were normal. In vivo specific antibody response to pneumococcus vaccine was depressed in CFS. Forty percent of patients showed titres of anti-human herpes virus 6 (anti-HHV-6) antibody higher than that in the controls (greater than or equal to 1/80). These data suggest immunological dysfunction in patients with chronic fatigue syndrome. The significance of these observations is discussed.
