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SIRT1 inhibition by sirtinol aggravates brain edema after experimental subarachnoid hemorrhage
Journal of neuroscience research, 2014-06, Vol.92 (6), p.714-722
Zhou, Xiao-Ming
Zhang, Xin
Zhang, Xiang-Sheng
Zhuang, Zong
Li, Wei
Sun, Qing
Li, Tao
Wang, Chun-Xi
Zhu, Lin
Shi, Ji-Xin
Zhou, Meng-Liang
2014
Details
Autor(en) / Beteiligte
Zhou, Xiao-Ming
Zhang, Xin
Zhang, Xiang-Sheng
Zhuang, Zong
Li, Wei
Sun, Qing
Li, Tao
Wang, Chun-Xi
Zhu, Lin
Shi, Ji-Xin
Zhou, Meng-Liang
Titel
SIRT1 inhibition by sirtinol aggravates brain edema after experimental subarachnoid hemorrhage
Ist Teil von
Journal of neuroscience research, 2014-06, Vol.92 (6), p.714-722
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
Secondary brain injury following subarachnoid hemorrhage (SAH) is poorly understood. We utilized a rat model of SAH to investigate whether SIRT1 has a protective role against brain edema via the tumor suppressor protein p53 pathway. Experimental SAH was induced in adult male Sprague‐Dawley rats by prechiasmatic cistern injection. Brain SIRT1 protein levels were examined in the sham controls and in rats 6, 12, 24, 48, and 72 hr after SAH induction. The SIRT1 inhibitor sirtinol was administered by intracerebroventricular infusion. Neurological functions, blood–brain barrier (BBB) disruption, and brain water content were assessed. Endothelial cell apoptosis, caspase 3 protein expression, p53 acetylation, and matrix metalloproteinase‐9 (MMP‐9) activity were examined. Compared with the control, SIRT1 protein expression increased remarkably, reaching a maximum at 24 hr after SAH. Sirtinol treatment significantly lowered SIRT1 expression, accompanied by deteriorated neurologic function, BBB disruption, brain edema, increased endothelial cell apoptosis, and increased MMP‐9 gelatinase activity compared with the rats treated with vehicle only. Our results suggest that increased expression of endogenous SIRT1 may play a neuroprotective role against brain edema after SAH. © 2014 Wiley Periodicals, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0360-4012
eISSN: 1097-4547
DOI: 10.1002/jnr.23359
Titel-ID: cdi_proquest_miscellaneous_1520377747
Format
–
Schlagworte
Animals
,
Apoptosis - drug effects
,
Benzamides - pharmacology
,
Blood-Brain Barrier - drug effects
,
Brain Edema - etiology
,
Brain Edema - metabolism
,
Capillary Permeability - drug effects
,
cerebral microvasculature
,
Disease Models, Animal
,
early brain injury
,
edema
,
Immunohistochemistry
,
Male
,
MMP-9
,
Naphthols - pharmacology
,
p53
,
Rats
,
Rats, Sprague-Dawley
,
SIRT1
,
Sirtuin 1 - metabolism
,
subarachnoid hemorrhage
,
Subarachnoid Hemorrhage - complications
,
Subarachnoid Hemorrhage - metabolism
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