NDLI: Therapy with the Combination of Amlodipine and Irbesartan Has Persistent Preventative Effects on Stroke Onset Associated with BDNF Preservation on Cerebral Vessels in Hypertensive Rats

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Therapy with the Combination of Amlodipine and Irbesartan Has Persistent Preventative Effects on Stroke Onset Associated with BDNF Preservation on Cerebral Vessels in Hypertensive Rats

Translational Stroke Research : Volume 6

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Translational Stroke Research : Volume 1

Therapy with the Combination of Amlodipine and Irbesartan Has Persistent Preventative Effects on Stroke Onset Associated with BDNF Preservation on Cerebral Vessels in Hypertensive Rats

Content Provider	Springer Nature Link
Author	Hasegawa, Yu Nakagawa, Takashi Uekawa, Ken Ma, Mingjie Lin, Bowen Kusaka, Hiroaki Katayama, Tetsuji Sueta, Daisuke Toyama, Kensuke Koibuchi, Nobutaka Kim Mitsuyama, Shokei
Copyright Year	2014
Abstract	Although calcium channel blockers, angiotensin II receptor blockers, and combination therapy are effective for hypertensive patients, the significant differences among them against stroke onset are undetermined. In this study, we investigated the significant beneficial effects of the combination therapy using amlodipine and irbesartan against stroke onset in hypertensive rats. The animals were fed an 8 % sodium diet and assigned to (1) vehicle, (2) amlodipine (2 mg/kg/day), (3) irbesartan (20 mg/kg/day), and (4) amlodipine + irbesartan groups. The drugs were given orally until 35 days, and incidences of stroke-related signs and mortality and blood pressure (BP) were monitored. Cerebral blood flow (CBF), brain water content, weight of the brain and left ventricle, and histological evaluations were conducted for the treated groups at 42 days after the start of the high-salt diet. Amlodipine and the combination therapy significantly reduced BP compared with the vehicle. Although the rates of stroke-related signs and mortality were high in the vehicle group, the rats in the treatment groups were mostly healthy until 35 days. After all drugs were discontinued, stroke onset was frequently seen in the monotherapy groups until 42 days, but no signs were observed in the combination therapy group. Although there were no significant differences in CBF or brain edema, the combination therapy reduced blood–brain barrier disruption, white matter injury, and reactive astrocytes compared with irbesartan, and the combination also inhibited left ventricular hypertrophy and preserved brain-derived neurotrophic factor (BDNF) expression on cerebral vessels compared to the monotherapies. These data suggest that the combination therapy had a persistent preventive effect on stroke onset in hypertensive rats, and the effects might be associated with BDNF preservation on cerebral vessels.
Starting Page	79
Ending Page	87
Page Count	9
File Format	PDF
ISSN	18684483
Journal	Translational Stroke Research
Volume Number	7
Issue Number	1
e-ISSN	1868601X
Language	English
Publisher	Springer US
Publisher Date	2014-12-23
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stroke SHRSP Combination therapy Amlodipine Irbesartan BDNF Neurosciences Neurology Cardiology Neurosurgery Vascular Surgery
Content Type	Text
Resource Type	Article
Subject	Cardiology and Cardiovascular Medicine Neuroscience Neurology (clinical)

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Therapy with the Combination of Amlodipine and Irbesartan Has Persistent Preventative Effects on Stroke Onset Associated with BDNF Preservation on Cerebral Vessels in Hypertensive Rats

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Therapy with the Combination of Amlodipine and Irbesartan Has Persistent Preventative Effects on Stroke Onset Associated with BDNF Preservation on Cerebral Vessels in Hypertensive Rats