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Published on: October 23, 2018
Sevoflurane downregulates IGF‑1 via microRNA‑98
Jue Jiang1, Zhifeng Chen1, Yaqiong Yang1
1Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, P.R. China.
Sevoflurane anesthesia reduces insulin-like growth factor-1 (IGF-1) neuroprotection by increasing microRNA-98. Inhibiting microRNA-98 can restore IGF-1 levels, suggesting a novel therapeutic target.
Area of Science:
- Neuroscience
- Endocrinology
- Molecular Biology
Background:
- Insulin-like growth factor (IGF)-1 is a neuroprotective hormone.
- Cognitive impairment can result from sevoflurane exposure.
- The molecular mechanisms linking sevoflurane and IGF-1 are not fully understood.
Purpose of the Study:
- To investigate the effect of sevoflurane on IGF-1 production.
- To elucidate the molecular mechanisms regulating IGF-1 by sevoflurane.
- To assess the role of microRNA-98 in this process.
Main Methods:
- Exposure of rat hepatocytes and adult mice to sevoflurane.
- Quantification of IGF-1 and microRNA-98 levels via ELISA, Western blotting, and RT-qPCR.
- Utilizing a microRNA-98 inhibitor to assess its regulatory role.
Main Results:
- Sevoflurane exposure decreased IGF-1 levels in hepatocytes and mice.
- Sevoflurane upregulated microRNA-98 expression.
- Inhibition of microRNA-98 counteracted the sevoflurane-induced reduction in IGF-1.
Conclusions:
- Sevoflurane reduces IGF-1 synthesis.
- This reduction is mediated by the upregulation of microRNA-98.
- MicroRNA-98 plays a key role in sevoflurane's regulation of IGF-1.
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