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Effects of atorvastatin on the inflammation regulation and elimination of subdural hematoma in rats.

Abstract：

BACKGROUND AND PURPOSE:It is well known that inflammation influence chronic subdural hematoma (CSDH) formation to a large extent. Atorvastatin has pleiotropic effects on restraining inflammation and promoting angiogenesis besides its cholesterol-lowering function. Hence, atorvastatin may induce anti-inflammation effects and facilitate therapeutic effects for subdural hematoma (SDH). METHODS:Adult male Wistar rats were subjected to SDH and successful establishment of SDH was confirmed by magnetic resonance imaging (MRI). The treatment was initiated 6 hours after SDH induction. For the treatment, rats suffering SDH were randomly divided into saline group (the control group, rats were treated by saline, n=29) and atorvastatin group (rats were treated by atorvastatin, 3mg/kg/day, n=30). The volume of lesion before treatment as well as on day 2 and day 7 after initial treatment was measured by MRI, respectively. The behaviors before SDH induction and on the days 1, 3, 5 and 7 after the initial treatment were dynamically evaluated. Gene expression, cytokine secretion and the number of neutrophilic granulocyte and vascular density were measured in both neomembrane and SDH lesion on the day 2 and day 7 after the initial treatment. RESULTS:It was found that the SDH rats treated by atorvastatin had a better behavior recovery compared to the ones treated by saline (p<0.05). By virtue of MRI scanning, it was revealed that SDH volumes were eliminated at a high speed by administration of atorvastatin than that of saline. With the help of the microscopic examination in the neomembrane, it was detected that the density of CD31+ neovasculars in the atorvastatin group was significantly higher than that in the saline group and the number of neutrophilic granulocyte in the atorvastatin group is less than that in the saline group. In comparison with saline treatment, the atorvastatin treatment did not change IL-10 expression and secretion, but it significantly decreased TNF-α and IL-6 level as well as VEGF gene expression. CONCLUSIONS:Atorvastatin treatment may eliminate SDH and improve the neural function of the rats through its anti-inflammatory effects. Hence, it indicated that statin induced inflammatory modulation might play a significant role in rats' SDH elimination and the functional recovery.

journal_name

J Neurol Sci

journal_title

Journal of the neurological sciences

authors

Li T,Wang D,Tian Y,Yu H,Wang Y,Quan W,Cui W,Zhou L,Chen J,Jiang R,Zhang J

doi

10.1016/j.jns.2014.04.009

subject

Has Abstract

pub_date

2014-06-15 00:00:00

pages

88-96

issue

1-2

eissn

0022-510X

issn

1878-5883

pii

S0022-510X(14)00230-5

journal_volume

341

pub_type

杂志文章

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