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Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents
Published on: June 2, 2015
Involvement of multitargets in paeoniflorin-induced preconditioning
Dong-Mei Chen1, Liang Xiao, Xin Cai
1Department of Pharmacology, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Pudong Shanghai 201203, China.
Summary
Paeoniflorin (PF) preconditioning offers delayed neuroprotection against stroke in rats by reducing mortality and infarct volume. This effect is linked to alterations in key cellular signaling pathways and protein expression.
Area of Science:
- Neuroscience
- Pharmacology
- Traditional Chinese Medicine
Background:
- Paeoniflorin (PF) is a key compound in Paeoniae radix, a traditional Chinese medicine.
- Ischemic stroke remains a leading cause of mortality and disability worldwide.
- Understanding neuroprotective agents is crucial for developing effective stroke treatments.
Purpose of the Study:
- To investigate the delayed neuroprotective effects of Paeoniflorin (PF) preconditioning.
- To elucidate the underlying molecular mechanisms of PF-induced neuroprotection in a stroke model.
Main Methods:
- A rat model of middle cerebral artery occlusion (MCAO) and reperfusion was utilized.
- Paeoniflorin (PF) was administered at various time points (24h, 48h, 5 days) before MCAO.
- Comparative proteomics analysis was performed to identify differentially expressed proteins.
Main Results:
- PF preconditioning significantly reduced mortality, infarct volume, and neurological deficits.
- Neuroprotection was observed even when PF was administered up to 5 days before MCAO.
- Proteomics revealed alterations in 42 proteins, including those involved in signaling pathways and cellular damage.
Conclusions:
- Paeoniflorin (PF) exhibits significant delayed neuroprotective effects against ischemic stroke.
- The mechanisms involve modulation of A(1) receptor, nitric oxide system, and inflammatory pathways (MAPK, NF-κB).
- PF represents a promising therapeutic candidate for stroke prevention and treatment.
