Increasing levels of TNFalpha are associated with increased brain perfusion.

Abstract:

OBJECTIVE:Recent reports of animal models have shown that growth factors have stimulating effect on brain perfusion via the development of blood vessels. However, studies on the effect of growth factors on brain perfusion in humans are lacking. The aim of our study was to prospectively investigate in humans the relation between growth factors and brain perfusion. METHODS:We analyzed circulating levels of vascular endothelial growth factor (VEGF), granulocyte-macrophage colony-stimulating growth factor (GM-CSF), tumor necrosis factor alpha (TNFalpha) and basic fibroblast growth factor (bFGF) in 121 consecutive patients (99 men and 22 women, age 58+/-10 years) who were enrolled in a prospective cohort study of patients with symptomatic atherosclerotic disease. In all patients regional cerebral blood flow (rCBF; in mL/min/100g) measurements were performed with arterial spin labeling magnetic resonance imaging. Cerebrovascular risk factors were assessed by means of a questionnaire and physical, ultrasonographic and laboratory examination. RESULTS:Increasing levels of TNFalpha were significantly associated with a higher rCBF (beta=7.0; 95% confidence interval 0.7; 13.9), independent of the presence of cerebrovascular risk factors. No significant association was found for VEGF, GM-CSF and bFGF. CONCLUSIONS:Increasing levels of TNFalpha are associated with increased rCBF, independent of the presence of cerebrovascular risk factors.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

van Laar PJ,van Raamt AF,van der Grond J,Mali WPTM,van der Graaf Y,Hendrikse J,SMART Study Group.

doi

10.1016/j.atherosclerosis.2006.11.041

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

449-454

issue

1

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(06)00737-4

journal_volume

196

pub_type

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