Jugular venous reflux and brain parenchyma volumes in elderly patients with mild cognitive impairment and Alzheimer's disease

Clive Beggs, Chih Ping Chung, Niels Bergsland, Pei Ning Wang, Simon Shepherd, Chun Yu Cheng, Michael G. Dwyer, Han Hwa Hu, Robert Zivadinov

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Background: To determine whether or not jugular venous reflux (JVR) is associated with structural brain parenchyma changes in individuals with mild cognitive impairment (MCI) and Alzheimer's disease (AD).Methods: 16 AD patients (mean (SD): 81.9 (5.8) years), 33 MCI patients (mean (SD): 81.4 (6.1) years) and 18 healthy elderly controls (mean (SD): 81.5 (3.4) years) underwent duplex ultrasonography and magnetic resonance imaging scans to quantify structural brain parenchyma changes. Normalized whole brain (WB), gray matter (GM) and white matter (WM) volumes were collected, together with CSF volume.Results: JVR was strongly associated with increased normalized WB (p = 0.014) and GM (p = 0.002) volumes across all three subject groups. There was a trend towards increased WB and GM volumes, which was accompanied by decreased CSF volume, in the JVR-positive subjects in both the MCI and AD groups. When the MCI and AD subjects were aggregated together significant increases were observed in both normalized WB (p = 0.009) and GM (p = 0.003) volumes for the JVR-positive group. No corresponding increases were observed for the JVR-positive subjects in the control group. Through receiver operating characteristic analysis of the brain volumetric data it was possible to discriminate between the JVR-positive and negative AD subjects with reasonable accuracy (sensitivity = 71.4%; specificity = 88.9%; p = 0.007).Conclusions: JVR is associated with intracranial structural changes in MCI and AD patients, which result in increased WB and GM volumes. The neuropathology of this unexpected and counterintuitive finding requires further investigation, but may suggest that JVR retrogradely transmits venous hypertension into the brain and leads to brain tissues swelling due to vasogenic edema.

Original languageEnglish
Article number157
JournalBMC Neurology
Volume13
DOIs
Publication statusPublished - Oct 31 2013
Externally publishedYes

Keywords

  • Alzheimer's disease
  • Brain parenchyma volume
  • Healthy controls
  • Jugular venous reflux
  • Mild cognitive impairment

ASJC Scopus subject areas

  • Clinical Neurology

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    Beggs, C., Chung, C. P., Bergsland, N., Wang, P. N., Shepherd, S., Cheng, C. Y., Dwyer, M. G., Hu, H. H., & Zivadinov, R. (2013). Jugular venous reflux and brain parenchyma volumes in elderly patients with mild cognitive impairment and Alzheimer's disease. BMC Neurology, 13, [157]. https://doi.org/10.1186/1471-2377-13-157