Autophagy Upregulation and Apoptosis Downregulation in DAHP and Triptolide Treated Cerebral Ischemia
Joint Authors
Davies, Henry
Yang, Yang
Gao, Keqiang
Li, Weiyun
Ling, Shucai
Rudd, John A.
Fang, Marong
Hu, Zhiying
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-02
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
It has previously been demonstrated that ischemic stroke activates autophagy pathways; however, the mechanism remains unclear.
The aim of this study is to further investigate the role that autophagy plays in cerebral ischemia.
2, 4-diamino-6-hydroxy-pyrimidine (DAHP), for its nitric oxide synthase (NOS) inhibiting neuroprotective effect, and triptolide (TP), for its anti-inflammatory property, were selected to administer pre middle cerebral artery occlusion (MCAO).
The drugs were administered 12 hours prior to MCAO.
Both magnetic resonance imaging (MRI) and 2, 3, 5-triphenyltetrazolium chloride (TTC) staining showed that the drugs reduce the area of infarction.
Immunoblotting analysis revealed increases in Beclin-1 and myeloid cell leukelia-1(Mcl-1) in treated rats.
This could be a contributing factor to the reduction in autophagy induced damage.
Immunochemistry and western blot showed that mTOR expression in treated rats was marginally different 24 h after injury, and this could also be significant in the mechanism.
Furthermore, terminal deoxynucleotidyl transferase- (TdT-) mediated dUTP nick end labeling (TUNEL) staining proved that the drugs are effective in reducing apoptosis.
The upregulation of Beclin-1 and Mcl-1 and downregulation of Bcl-2, caspase-3, and the Bcl-2/Beclin-1 ratio infer that the neuroprotective effect of DAHP and TP act via the mediation of autophagy and apoptosis pathways.
American Psychological Association (APA)
Yang, Yang& Gao, Keqiang& Hu, Zhiying& Li, Weiyun& Davies, Henry& Ling, Shucai…[et al.]. 2015. Autophagy Upregulation and Apoptosis Downregulation in DAHP and Triptolide Treated Cerebral Ischemia. Mediators of Inflammation،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1072117
Modern Language Association (MLA)
Yang, Yang…[et al.]. Autophagy Upregulation and Apoptosis Downregulation in DAHP and Triptolide Treated Cerebral Ischemia. Mediators of Inflammation No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1072117
American Medical Association (AMA)
Yang, Yang& Gao, Keqiang& Hu, Zhiying& Li, Weiyun& Davies, Henry& Ling, Shucai…[et al.]. Autophagy Upregulation and Apoptosis Downregulation in DAHP and Triptolide Treated Cerebral Ischemia. Mediators of Inflammation. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1072117
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1072117