Vestibular neuronitis--serum and CSF virus antibody titer

Area of Science:

• Neurology
• Virology
• Immunology

Background:

• Vestibular neuronitis is a neurological condition affecting balance.
• Its exact cause remains unclear, with viral infections being a suspected factor.
• Cerebrospinal fluid (CSF) analysis can provide insights into central nervous system inflammation.

Purpose of the Study:

• To investigate cerebrospinal fluid (CSF) findings in patients with vestibular neuronitis.
• To explore potential associations between vestibular neuronitis and latent herpes virus infections.
• To contrast CSF profiles of vestibular neuronitis with those of herpes zoster.

Main Methods:

• Analysis of CSF samples from seven vestibular neuronitis patients (aged 28-55).
• Measurement of CSF protein and cell counts.
• Detection of antibodies for Herpes Simplex Virus (HSV) type 1, Epstein-Barr Virus (EBV), and Varicella Zoster Virus (VZV) using immunofluorescent antibody techniques.

Main Results:

• CSF protein levels showed a delayed rise, becoming abnormal around two weeks post-vertigo onset, while cell counts remained normal.
• HSV type 1 IgG antibodies were detected in serum in one case and in CSF in two cases, but not significantly.
• No significant evidence of blood-CSF barrier breakdown or active infection with HSV, VZV, or EBV was found.

Conclusions:

• Vestibular neuronitis presents with characteristic CSF protein changes, distinct from typical viral meningitis.
• The study found no direct evidence implicating active HSV, VZV, or EBV infection in the pathogenesis of vestibular neuronitis.
• Further research into latent herpes virus infections and CSF profiles is needed to understand vestibular neuronitis better.