Abstract:
:Recent studies provide solid evidence for the importance to delineate the co-relationship between preconditioning stimuli and therapeutic efficacy of drugs commonly used in clinic. However, very little is known about this important topic. In the present study, we investigated the effects of hyperthermia on the protective role of ginkgolides on astrocytes against ischemia/reperfusion (I/R) injury and also evaluated the effects of the timing of co-treatment of hyperthermia with ginkgolides on astrocytes against the I/R injury. We demonstrated that there is a synergistic action between hyperthermic and pharmacological preconditioning to protect astrocytes against the I/R injury. Our findings also showed that astrocytes have completely different responses to the treatment with hyperthermia or ginkgolides alone or co-treatment together at different stages of the I/R process. Hyperthermic preconditioning before the I/R can protect astrocytes against the I/R injury. However, if treated in the ischemia and reperfusion stage, hyperthermia exacerbates the cell injury and significantly attenuates the protective effectiveness of ginkgolides. These findings imply that the timing of treatment with hypothermia and/or ginkgolides is one of the key factors to determine their protective effects on the cells against the I/R injury.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Du F,Qian ZM,Zhu L,Wu XM,Yung WH,Ke Ydoi
10.1007/s11064-010-0327-8subject
Has Abstractpub_date
2011-02-01 00:00:00pages
312-8issue
2eissn
0364-3190issn
1573-6903journal_volume
36pub_type
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