title: The possible contribution of angiitis to the onset of benign paroxysmal positional vertigo (BPPV).
abstract: OBJECTIVE
  The aim was to evaluate the oxidative stress and the angiitis in patients with BPPV.
  
  
  METHODS
  Patients with benign paroxysmal positional vertigo (BPPV) within 14 days of onset were analyzed. The level of diacron reactive oxygen metabolites (d-ROM) and circulating soluble vascular cell adhesion molecule 1 (VCAM-1), were evaluated. As a treatment the patients were taught to perform the Brandt-Daroff exercise at home by themselves. The prognosis of BPPV, which is measured as the time until the disappearance of positional nystagmus by a physician during the outpatient visit each week, the relation among the level of oxygen metabolites, vascular molecule and the duration until remission were analyzed.
  
  
  RESULTS
  The patients who required longer time for the disappearance of positional nystagmus showed high d-ROM and VCAM levels, whereas those who required shorter time for remission showed lower d-ROM and VCAM levels.
  
  
  CONCLUSIONS
  There is an increased expression of VCAM-1 and d-ROM confirming the existence of an angiitis and supporting the vascular involvement in BPPV. The identification of the high levels of d-ROM and VCAM-1 can open the way to selective pharmacological treatments able to correct the oxidative stress and activation of endothelial cells.
authors: Department of Otorhinolaryngology, Hino Municipal Hospital, Tokyo, Japan. amifumi@bc5.so-net.ne.jp
authors: Fumiyuki
authors: F
authors: Goto
authors: Ken
authors: K
authors: Hayashi
authors: Takanobu
authors: T
authors: Kunihiro
authors: Kaoru
authors: K
authors: Ogawa