start-ver=1.4
cd-journal=joma
no-vol=43
cd-vols=
no-issue=6
article-no=
start-page=1639
end-page=1646
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2012
dt-pub=201206
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Clinical and Pathological Improvement in Stroke-Prone Spontaneous Hypertensive Rats Related to the Pleiotropic Effect of Cilostazol
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background and Purpose-Cerebral infarction is a major cause of death or decreasing activities of daily living. This study aimed to investigate the efficacy of commonly used antiplatelet drugs on stroke and motor and cognitive functions in relation to oxidative stress markers and insulin-like growth factor 1 receptor (IGF-1R). 

Methods-Stroke-prone spontaneously hypertensive rats were treated with vehicle, aspirin, clopidogrel, and cilostazol from 8 to 10 weeks of age. Physiological parameters, regional cerebral blood flow, and serum lipids were examined. Motor and cognitive functions were evaluated weekly by the Rotorod and water maze task. Spontaneous infarct volume, oxidative stress markers for lipid, protein, and DNA at the ischemic boundary zone of spontaneous infarction, and the IGF-1R-positive cell ratio in the hippocampus were immunohistochemically examined in brain sections. IGF-1R beta expression in the hippocampus was assessed by Western blotting. 

Results-The antiplatelet drugs, cilostazol and clopidogrel, reduced the spontaneous infarct volume more than aspirin. Only cilostazol improved motor and cognitive functions with a significant increase (P<0.05) in the memory-related IGF-1R-positive ratio and IGF-1R beta expression in the hippocampus. Cilostazol reduced the 4 oxidative stress markers in affected neurons in stroke-prone spontaneously hypertensive rats regardless of blood pressure, regional cerebral blood flow, or serum lipid levels. 

Conclusions-The present results suggest that a possible pleiotropic effect of cilostazol resulted in the reduction of spontaneous infarct volume and preservation of motor and spatial cognitive functions. The increase of IGF-1R-positive cells in the hippocampal CA1 region could partly explain the preservation of spatial cognitive function in stroke-prone spontaneously hypertensive rats.
en-copyright=
kn-copyright=

en-aut-name=OmoteYoshio
en-aut-sei=Omote
en-aut-mei=Yoshio
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=DeguchiKentaro
en-aut-sei=Deguchi
en-aut-mei=Kentaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TianFengFeng
en-aut-sei=Tian
en-aut-mei=FengFeng
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KawaiHiromi
en-aut-sei=Kawai
en-aut-mei=Hiromi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=KurataTomoko
en-aut-sei=Kurata
en-aut-mei=Tomoko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=YamashitaToru
en-aut-sei=Yamashita
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=OhtaYasuyuki
en-aut-sei=Ohta
en-aut-mei=Yasuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=AbeKoji
en-aut-sei=Abe
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

affil-num=1
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=2
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=3
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=4
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=5
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=6
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=7
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci

affil-num=8
en-affil=
kn-affil=Okayama Univ, Dept Neurol, Grad Sch Med Dent & Pharmaceut Sci
en-keyword=cerebral infarction
kn-keyword=cerebral infarction
en-keyword=cilostazol
kn-keyword=cilostazol
en-keyword=IGF-1R
kn-keyword=IGF-1R
en-keyword=oxidative stress
kn-keyword=oxidative stress
en-keyword=SHR-SP
kn-keyword=SHR-SP
END