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Transient Global Ischemia-Induced Brain Inflammatory Cascades Attenuated by Targeted Temperature Management

Authors
 Dae Ki Hong  ;  Yoo Seok Park  ;  Ji Sun Woo  ;  Ju Hee Kim  ;  Jin Ho Beom  ;  Sung Phil Chung  ;  Je Sung You  ;  Sang Won Suh 
Citation
 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES, Vol.22(10) : 5114, 2021-05 
Journal Title
 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 
Issue Date
2021-05
Keywords
post cardiac arrest care ; targeted temperature management ; high mobility box protein 1 ; apoptosis ; inflammation ; microglia
Abstract
Sudden cardiac arrest leads to a significantly increased risk of severe neurological impairment and higher mortality rates in survivors due to global brain tissue injury caused by prolonged whole-body ischemia and reperfusion. The brain undergoes various deleterious cascading events. Among these damaging mechanisms, neuroinflammation plays an especially crucial role in the exacerbation of brain damage. Clinical guidelines indicate that 33 °C and 36 °C are both beneficial for targeted temperature management (TTM) after cardiac arrest. To clarify the mechanistic relationship between TTM and inflammation in transient global ischemia (TGI) and determine whether 36 °C produces a neuroprotective effect comparable to 33 °C, we performed an experiment using a rat model. We found that TTM at 36 °C and at 33 °C attenuated neuronal cell death and apoptosis, with significant improvements in behavioral function that lasted for up to 72 h. TTM at 33 °C and 36 °C suppressed the propagation of inflammation including the release of high mobility group box 1 from damaged cells, the activation and polarization of the microglia, and the excessive release of activated microglia-induced inflammatory cytokines. There were equal neuroprotective effects for TTM at 36 °C and 33 °C. In addition, hypothermic complications and should be considered safe and effective after cardiac arrest.
Files in This Item:
T202101720.pdf Download
DOI
10.3390/ijms22105114
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Emergency Medicine (응급의학교실) > 1. Journal Papers
Yonsei Authors
Park, Yoo Seok(박유석) ORCID logo https://orcid.org/0000-0003-1543-4664
Beom, Jin Ho(범진호) ORCID logo https://orcid.org/0000-0002-2805-257X
You, Je Sung(유제성) ORCID logo https://orcid.org/0000-0002-2074-6745
Chung, Sung Phil(정성필) ORCID logo https://orcid.org/0000-0002-3074-011X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/182984
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