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ME/CFS AUSTRALIA (SA) INC
Registered Charity 698
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Immune and hemorheological changes in CFS
Saturday 16 January 2010
From the Journal of Translational Medicine:
Immune and hemorheological changes in Chronic Fatigue Syndrome
Ekua W Brenu, Donald R Staines, Oguz K Baskurt, Kevin J Ashton, Sandra B Ramos, Rhys M Christy and Sonya M Marshall-Gradisnik
Journal of Translational Medicine 2010, 8:1 doi:10.1186/1479-5876-8-1
Published: 11 January 2010
Abstract (provisional)
Background
Chronic Fatigue Syndrome (CFS) is a multifactorial disorder that affects various physiological systems including immune and neurological systems. The immune system has been substantially examined in CFS with equivocal results, however, little is known about the role of neutrophils and natural killer (NK) phenotypes in the pathomechanism of this disorder. Additionally, the role of erythrocyte rheological characteristics in CFS has not been fully expounded. The objective of this present study was to determine deficiencies in lymphocyte function and erythrocyte rheology in CFS patients.
Methods
Flow cytometric measurements were performed for neutrophil function, lymphocyte numbers, NK phenotypes (CD56dimCD16+ and CD56brightCD16-) and NK cytotoxic activity. Erythrocyte aggregation, deformability and fibrinogen levels were also assessed.
Results
CFS patients (n = 10) had significant decreases in neutrophil respiratory burst, NK cytotoxic activity and CD56brightCD16- NK phenotypes in comparison to healthy controls (n = 10). However, hemorheological characteristics, aggregation, deformability and fibrinogen, lymphocyte numbers and CD56dimCD16+ NK cells were similar between groups.
Conclusion
Immune dysfunction may therefore be an important contributory factor to the mechanism of CFS, as indicated by decreases in neutrophil respiratory burst, NK cell activity and NK phenotypes. Thus, immune cell function and phenotypes are possible diagnostic markers for CFS.
The complete article is available as a provisional PDF. The fully formatted PDF and HTML versions are in production.
The above originally appeared here.
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