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. 2014 Feb 11;82(6):498-503.
doi: 10.1212/WNL.0000000000000112. Epub 2014 Jan 8.

Neuralgic amyotrophy and hepatitis E virus infection

Jeroen J J van Eijk  1 , Richie G Madden, Annemiek A van der Eijk, Jeremy G Hunter, Johan H J Reimerink, Richard P Bendall, Suzan D Pas, Vic Ellis, Nens van Alfen, Laura Beynon, Lucy Southwell, Brendan McLean, Bart C Jacobs, Baziel G M van Engelen, Harry R Dalton
Affiliations

Neuralgic amyotrophy and hepatitis E virus infection

Jeroen J J van Eijk et al. Neurology. .

Abstract

Objective: To determine whether there is an association between an acute preceding hepatitis E virus (HEV) infection and neuralgic amyotrophy (NA), and if so, whether patients with HEV-related NA differ from patients without an associated HEV infection.

Methods: HEV testing was conducted in a retrospective cohort of 28 Cornish patients with NA (2011-2013) and a prospective cohort of 38 consecutive Dutch patients with NA (2004-2007). Acute-phase serum samples were analyzed for the presence of anti-HEV immunoglobulin (Ig) M and IgG and HEV RNA (quantitative real-time PCR).

Results: Five cases (10.6%) of acute hepatitis E infection were identified in a total group of 47 patients with NA of whom serum samples were available. In 4 patients, HEV RNA was detected in serum samples taken at presentation. All patients with HEV-associated NA had clinical and electrophysiologic evidence of bilateral brachial plexus involvement. Anti-HEV IgM positivity was not related to age, sex, disease severity, disease course, or outcome.

Conclusions: Acute hepatitis E is found in 10% of patients with NA from the United Kingdom and the Netherlands. Further research is required to investigate the role of HEV in NA in other geographical locations and to determine pathophysiologic mechanisms.

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Figures

Figure 1
Figure 1. Flowchart of all Dutch and Cornish patients with NA
HEV = hepatitis E virus; Ig = immunoglobulin; NA = neuralgic amyotrophy; neg = negative; pos = positive.
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