Anti-Intercellular Adhesion Molecule-1 Antibody's Effect on Noise Damage

作者：Seidman Michael D^*; Tang Wenxue; Shirwany Najeeb; Bai Uma; Rubin Cory J; Henig Joseph P; Quirk Wayne S

来源：Laryngoscope, 2009, 119(4): 707-712.

DOI：10.1002/lary.20109

• ICAM-1
• noise-induced hearing loss
• temporary threshold shifts
• rat

Objectives/Hypothesis: The purpose of this study was to investigate possible preventive effects of anti-intercellular adhesion molecule-1 antibody (anti-ICAM-1 Ab) on noise-induced cochlear damage as assessed by changes in auditory thresholds and cochlear blood flow.
Study Design: A controlled animal study. Pre-treated rats with anti-ICAM-1 Ab or saline control, followed with exposure to 72 continuous hours of broad band noise (107 dB SPL), and 24 hours after noise exposure treated again with anti-ICAM-1 Ab or saline.
Methods: Eighteen healthy male Fischer rats (200-250 g) were used. Sixteen were randomly selected to study noise-induced temporary threshold shifts. The remaining two rats were used to study cochlear blood flow (CBF), using laser Doppler flow-metry and blood pressure measurements.
Results: Rats treated with anti-ICAM-1 Ab (1.875 mg/kg, intravenously) showed attenuated temporary threshold shifts (TTS) compared to controls. Both groups showed a partial threshold recovery 72 hours following noise exposure, normal for this noise exposure paradigm. Comparisons of baseline and post-treatment measurements of CBF and mean arterial blood pressure revealed no significant changes. Anti-ICAM-1 Ab animals displayed significantly lower mean auditory threshold shifts at all five test frequencies (P < .05) when compared to control.
Conclusions: Blocking the cascade of reactive oxygen species (ROS) generation by using anti-ICAM-Ab protects against noise-induced hearing loss.

• 出版日期2009-4
• 单位河北医科大学