Hypoxia, hibernation and Neuroprotection: An Experimental Study in Mice

Date

2018-08-01

Authors

Ren, Changhong
Li, Sijie
Rajah, Gary
Shao, Guo
Lu, Guowei
Han, Rongrong
Huang, Qingjian
Li, Haiyan
Ding, Yuchuan
Jin, Kunlin

ORCID

0000-0002-1336-348X (Jin, Kunlin)

Journal Title

Journal ISSN

Volume Title

Publisher

JKL International

Abstract

Hibernation is a unique physiological state that evolved to survive periods of food shortages. It is characterized by profound decreases in metabolic rate, body temperature and physiological functions. Studies have shown that animals in hibernation can resist neurological damage. Here, we aimed to study whether hypoxia can induce a hibernation-like state in a traditionally non-hibernating animal and whether it is neuroprotective. All procedures were conducted according to international guidelines on laboratory animal safety. Mice C57BL/6 (19-21g) were placed into a 125 mL jar with fresh air and the jar was sealed with a rubber plug. For each run, the tolerance limit was judged by the animals' appearance for "air hunger". The animal was removed from the jar as soon as its first gasping breath appeared and was moved to another fresh-air-containing jar of similar volume. This procedure was performed in four runs. The hypoxia exposure significantly decreased oxygen (O2) consumption, carbon dioxide (CO2) production, respiratory rate and heart rate. Meanwhile, rectal temperature reached a minimum of 12.7+/-2.56 degrees C, which is lower than a wide range of ambient temperatures. The mimicked hibernation decreased the infarct size in a focal cerebral ischemia mouse model. Our findings suggest the possibility of inducing suspended animation-like hibernation states for medical applications post injury.

Description

Citation

Ren, C., Li, S., Rajah, G., Shao, G., Lu, G., Han, R., Huang, Q., Li, H., Ding, Y., Jin, K., & Ji, X. (2018). Hypoxia, hibernation and Neuroprotection: An Experimental Study in Mice. Aging and disease, 9(4), 761-768. https://doi.org/10.14336/AD.2018.0702

Rights

© 2018 Ren C et al.

License

Attribution 4.0 International (CC BY 4.0)