The preventive effects of apolipoprotein mimetic D-4F from vibration injury-experiment in rats. Hand (N Y) 2011 Mar;6(1):64-70
Date
03/02/2012Pubmed ID
22379441Pubmed Central ID
PMC3041892DOI
10.1007/s11552-010-9289-1Abstract
Hand-arm vibration syndrome (HAVS) is a debilitating sequela of neurological and vascular injuries caused by prolonged occupational exposure to hand-transmitted vibration. Our previous study demonstrated that short-term exposure to vibration can induce vasoconstriction and endothelial cell damage in the ventral artery of the rat's tail. The present study investigated whether pretreatment with D-4F, an apolipoprotein A-1 mimetic with known anti-oxidant and vasodilatory properties, prevents vibration-induced vasoconstriction, endothelial cell injury, and protein nitration. Rats were injected intraperitoneally with 3 mg/kg D-4F at 1 h before vibration of the tails for 4 h/day at 60 Hz, 49 m/s(2) r.m.s. acceleration for either 1 or 3 days. Vibration-induced endothelial cell damage was examined by light microscopy and nitrotyrosine immunoreactivity (a marker for free radical production). One and 3-day vibration produced vasoconstriction and increased nitrotyrosine. Preemptive treatment with D-4F prevented these negative changes. These findings suggest that D-4F may be useful in the prevention of HAVS.
Author List
Rowe DJ, Yan JG, Zhang LL, Pritchard KA Jr, Kao DS, Matloub HS, Riley DAAuthors
Hani S. Matloub MD Professor in the Plastic Surgery department at Medical College of WisconsinKirkwood A. Pritchard PhD Professor in the Surgery department at Medical College of Wisconsin
