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J Agric Food Chem. 2017 Mar 1;65(8):1533-1542. doi: 10.1021/acs.jafc.6b04979. Epub 2017 Feb 16.

Intranasal Pretreatment with Z-Ligustilide, the Main Volatile Component of Rhizoma Chuanxiong, Confers Prophylaxis against Cerebral Ischemia via Nrf2 and HSP70 Signaling Pathways.

Author information

1
College of Pharmaceutical Sciences, Southwest University , 2 Tiansheng Road, Beibei District, Chongqing 400716, China.
2
Institute of Laboratory Animals, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital , Chengdu 610212, Sichuan, China.

Abstract

Z-Ligustilide (Z-LIG) is a major component in Rhizoma Chuanxiong, which has been traditionally used as a health food supplement for the prevention of cerebrovascular disease in China. This study investigates the ability of intranasal Z-LIG pretreatment to enhance protection against neuronal damage in rats with middle cerebral artery occlusion (MCAO) and the role of cellular stress response mechanisms Nrf2 and HSP70. Z-LIG significantly mitigated infarct volume, neurological dysfunction, blood-brain barrier disruption, and brain edema (p < 0.01). Moreover, Z-LIG prevented the loss of collagen IV, occludin, and ZO-1 (p < 0.05) and decreased MMP-2 and -9 levels (p < 0.01). Meanwhile, Z-LIG up-regulated NQO1 and HSP70. Notably, blockage of Nrf2-driven transcription or down-regulation of HSP70 remarkably attenuated the preventive effect of Z-LIG (p < 0.05). Together, intranasal delivery of Z-LIG enhanced protection against ischemic injury via Nrf2 and HSP70 signaling pathways and has prophylactic potential in the population at high risk of stroke.

KEYWORDS:

HSP70; Nrf2; Z-ligustilide; intranasal delivery; ischemic stroke

PMID:
28169530
DOI:
10.1021/acs.jafc.6b04979
[Indexed for MEDLINE]

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