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, Sonya M. Marshall-Gradisnik

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Abstract

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 (CD56(dim)CD16(+) and CD56(bright)CD16(-)) 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 CD56(bright)CD16(-) NK phenotypes in comparison to healthy controls (n = 10). However, hemorheological characteristic, aggregation, deformability, fibrinogen, lymphocyte numbers and CD56(dim)CD16(+) NK cells were similar between the two groups.

Conclusion: These results indicate immune dysfunction as potential contributors 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 may be important diagnostic markers for CFS. The absence of rheological changes may indicate no abnormalities in erythrocytes of CFS patients.

Original languageEnglish
Article number1
Number of pages10
JournalJournal of Translational Medicine
Volume8
DOIs
Publication statusPublished - 11 Jan 2010

Cite this

Brenu, E. W., Staines, D. R., Baskurt, O. K., Ashton, K. J., Ramos, S. B., Christy, R. M., & Marshall-Gradisnik, S. M. (2010). Immune and hemorheological changes in Chronic Fatigue Syndrome. Journal of Translational Medicine, 8, [1]. https://doi.org/10.1186/1479-5876-8-1
Brenu, Ekua W. ; Staines, Donald R. ; Baskurt, Oguz K. ; Ashton, Kevin J. ; Ramos, Sandra B. ; Christy, Rhys M. ; Marshall-Gradisnik, Sonya M. / Immune and hemorheological changes in Chronic Fatigue Syndrome. In: Journal of Translational Medicine. 2010 ; Vol. 8.
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abstract = "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 (CD56(dim)CD16(+) and CD56(bright)CD16(-)) 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 CD56(bright)CD16(-) NK phenotypes in comparison to healthy controls (n = 10). However, hemorheological characteristic, aggregation, deformability, fibrinogen, lymphocyte numbers and CD56(dim)CD16(+) NK cells were similar between the two groups.Conclusion: These results indicate immune dysfunction as potential contributors 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 may be important diagnostic markers for CFS. The absence of rheological changes may indicate no abnormalities in erythrocytes of CFS patients.",
author = "Brenu, {Ekua W.} and Staines, {Donald R.} and Baskurt, {Oguz K.} and Ashton, {Kevin J.} and Ramos, {Sandra B.} and Christy, {Rhys M.} and Marshall-Gradisnik, {Sonya M.}",
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Brenu, EW, Staines, DR, Baskurt, OK, Ashton, KJ, Ramos, SB, Christy, RM & Marshall-Gradisnik, SM 2010, 'Immune and hemorheological changes in Chronic Fatigue Syndrome' Journal of Translational Medicine, vol. 8, 1. https://doi.org/10.1186/1479-5876-8-1

Immune and hemorheological changes in Chronic Fatigue Syndrome. / Brenu, Ekua W.; Staines, Donald R.; Baskurt, Oguz K.; Ashton, Kevin J.; Ramos, Sandra B.; Christy, Rhys M.; Marshall-Gradisnik, Sonya M.

In: Journal of Translational Medicine, Vol. 8, 1, 11.01.2010.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - Immune and hemorheological changes in Chronic Fatigue Syndrome

AU - Brenu, Ekua W.

AU - Staines, Donald R.

AU - Baskurt, Oguz K.

AU - Ashton, Kevin J.

AU - Ramos, Sandra B.

AU - Christy, Rhys M.

AU - Marshall-Gradisnik, Sonya M.

PY - 2010/1/11

Y1 - 2010/1/11

N2 - 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 (CD56(dim)CD16(+) and CD56(bright)CD16(-)) 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 CD56(bright)CD16(-) NK phenotypes in comparison to healthy controls (n = 10). However, hemorheological characteristic, aggregation, deformability, fibrinogen, lymphocyte numbers and CD56(dim)CD16(+) NK cells were similar between the two groups.Conclusion: These results indicate immune dysfunction as potential contributors 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 may be important diagnostic markers for CFS. The absence of rheological changes may indicate no abnormalities in erythrocytes of CFS patients.

AB - 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 (CD56(dim)CD16(+) and CD56(bright)CD16(-)) 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 CD56(bright)CD16(-) NK phenotypes in comparison to healthy controls (n = 10). However, hemorheological characteristic, aggregation, deformability, fibrinogen, lymphocyte numbers and CD56(dim)CD16(+) NK cells were similar between the two groups.Conclusion: These results indicate immune dysfunction as potential contributors 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 may be important diagnostic markers for CFS. The absence of rheological changes may indicate no abnormalities in erythrocytes of CFS patients.

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DO - 10.1186/1479-5876-8-1

M3 - Article

VL - 8

JO - Journal of Translational Medicine

JF - Journal of Translational Medicine

SN - 1479-5876

M1 - 1

ER -