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Hydroxysafflor Yellow A Alleviates Ischemic Stroke in Rats via HIF-1[Formula: see text], BNIP3, and Notch1-Mediated Inhibition of Autophagy.

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机构: [1]College of Traditional Chinese Medicine, Hebei University, Baoding, Hebei 071000, P. R. China [2]Langfang TCM Hospital, Langfang, Hebei 065000, P. R. China [3]Shenzhen TCM Hospital, Shenzhen, Guangdong 518000, P. R. China
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关键词: Hydroxysafflor Yellow A Cerebral Infarction Autophagy HIF-1α BNIP3 Notch1

摘要:
Stroke has become a major cause of death and disability worldwide. The cellular recycling pathway autophagy has been implicated in ischemia-induced neuronal changes, but whether autophagy plays a beneficial or detrimental role is controversial. Hydroxysafflor Yellow A (HSYA), a popular herbal medicine, is an extract of Carthamus tinctorius and is used to treat ischemic stroke (IS) in China. HSYA has been shown to prevent cardiovascular and cerebral ischemia/reperfusion injury in animal models. However, the specific active ingredients and molecular mechanisms of HSYA in IS remain unclear. Here, we investigated the effect of HSYA treatment on autophagy in a rat model of IS. IS was induced in rats by middle cerebral artery occlusion. Rats were treated once daily for 3 days with saline, HYSA, or the neuroprotective agent Edaravone. Neurobehavioral testing was performed on days 1, 2, and 3 post-surgery. Brains were removed on day 3 post-surgery for histological evaluation of infarct area, morphology, and for qRT-PCR and western blot analysis of the expression of the autophagy factor LC3 and the signaling molecules HIF-1[Formula: see text], BNIP3, and Notch1. Molecular docking studies were performed in silico to predict potential interactions between HSYA and LC3, HIF-1[Formula: see text], BNIP3, and Notch1 proteins. The result showed that HSYA treatment markedly alleviated IS-induced neurobehavioral deficits and reduced brain infarct area and tissue damage. HSYA also significantly reduced hippocampal expression levels of LC3, HIF-1[Formula: see text], BNIP3, and Notch1. The beneficial effect of HSYA was generally superior to that of Edaravone. Molecular modeling suggested that HSYA may bind strongly to HIF-1[Formula: see text], BNIP3, and Notch1 but weakly to LC3. In conclusion, HSYA inhibits post-IS autophagy induction in the brain, possibly by suppressing HIF-1[Formula: see text], BNIP3 and Notch1. HSYA may have utility as a post-IS neuroprotective agent.

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出版当年[2021]版:
大类 | 2 区 医学
小类 | 2 区 全科医学与补充医学 2 区 医学:内科
最新[2025]版:
大类 | 2 区 医学
小类 | 2 区 全科医学与补充医学 2 区 医学:内科
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出版当年[2020]版:
Q1 MEDICINE, GENERAL & INTERNAL Q1 INTEGRATIVE & COMPLEMENTARY MEDICINE
最新[2023]版:
Q1 INTEGRATIVE & COMPLEMENTARY MEDICINE Q1 MEDICINE, GENERAL & INTERNAL

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第一作者机构: [1]College of Traditional Chinese Medicine, Hebei University, Baoding, Hebei 071000, P. R. China [2]Langfang TCM Hospital, Langfang, Hebei 065000, P. R. China
通讯作者:
通讯机构: [1]College of Traditional Chinese Medicine, Hebei University, Baoding, Hebei 071000, P. R. China [3]Shenzhen TCM Hospital, Shenzhen, Guangdong 518000, P. R. China [*1]College of Traditional Chinese Medicine, Hebei University, No. 342, Yuhua Dong Road, Baoding, Hebei 071000, P. R. China.
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