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Hand (N Y). 2011 Mar;6(1):64-70. doi: 10.1007/s11552-010-9289-1. Epub 2010 Sep 8.

The preventive effects of apolipoprotein mimetic D-4F from vibration injury-experiment in rats.

Abstract

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.

KEYWORDS:

Apolipoprotein mimetic; D-4F; Endothelial cell injury; HAVS; Hand arm vibration syndrome; Occupational Raynaud's; Vasoconstriction; Vibration injury

PMID:
22379441
[PubMed]
PMCID:
PMC3041892
Free PMC Article

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