Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats

Junyun He, Leanne Young, Xiaofeng Jia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cardiac arrest (CA) is one of the leading causes of mortality and morbidity in the world. Fast, reversible and controllable pharmaceutical-induced hypothermia (PIH) is strongly desired to treat ischemia-reperfusion brain injury. Dihydrocapsaicin (DHC), an agonist of transient receptor potential vanilloid type 1 cation channel (TRPV1), is an emerging candidate for PIH. Its capability to lower body temperature has been validated in both healthy and stroke animal models. However, DHC has shown cardiovascular effects and its safety and feasibility in a CA model has not been tested. Additionally, activated TRPV1 has multiple functions in addition to regulating body temperature and its effect on neurological recovery needs to be evaluated. In this study, we compared two methods of DHC administration, bolus injection and infusion via the femoral vein. We found that cardiovascular effects were only seen with a large dose DHC bolus injection. Then, we applied DHC-induced hypothermia in an asphyxial-CA rat model. We showed that DHC-treated rats were viable. Four-hour infusion of DHC at a rate of 0.75 mg/kg/h after CA maintained a body temperature of about 34 °C for at least 8 hours. DHC-treated rats had higher electrical activity during the first 4 hours after CA and had better neurological recovery during the 3 days after CA compared with normothermia rats. Additional pathway investigation of DHC administration following CA will further uncover the benefits of DHC-induced hypothermia.

Original languageEnglish (US)
Title of host publication2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1858-1861
Number of pages4
Volume2016-October
ISBN (Electronic)9781457702204
DOIs
StatePublished - Oct 13 2016
Externally publishedYes
Event38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016 - Orlando, United States
Duration: Aug 16 2016Aug 20 2016

Other

Other38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016
CountryUnited States
CityOrlando
Period8/16/168/20/16

Fingerprint

Hypothermia
Induced Hypothermia
Heart Arrest
Rats
Drug products
Positive ions
Recovery
Body Temperature
Temperature
Brain
Animals
Cations
dihydrocapsaicin
Injections
Femoral Vein
Reperfusion Injury
Pharmaceutical Preparations
Brain Injuries
Animal Models
Stroke

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Cite this

He, J., Young, L., & Jia, X. (2016). Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats. In 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016 (Vol. 2016-October, pp. 1858-1861). [7591082] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2016.7591082

Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats. / He, Junyun; Young, Leanne; Jia, Xiaofeng.

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016. Vol. 2016-October Institute of Electrical and Electronics Engineers Inc., 2016. p. 1858-1861 7591082.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

He, J, Young, L & Jia, X 2016, Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats. in 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016. vol. 2016-October, 7591082, Institute of Electrical and Electronics Engineers Inc., pp. 1858-1861, 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016, Orlando, United States, 8/16/16. https://doi.org/10.1109/EMBC.2016.7591082
He J, Young L, Jia X. Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats. In 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016. Vol. 2016-October. Institute of Electrical and Electronics Engineers Inc. 2016. p. 1858-1861. 7591082 https://doi.org/10.1109/EMBC.2016.7591082
He, Junyun ; Young, Leanne ; Jia, Xiaofeng. / Dihydrocapsaicin-induced hypothermia after asphyxiai cardiac arrest in rats. 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2016. Vol. 2016-October Institute of Electrical and Electronics Engineers Inc., 2016. pp. 1858-1861
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