Funding for this research was provided by:
National Natural Science Foundation of China (81771206, 81974172, 81471135)
Natural Science Foundation of Hunan Province (2017JJ1036)
Received: 30 June 2019
Accepted: 5 September 2019
First Online: 18 September 2019
: All experiments were approved by the Animal Care and Use Committee of Central South University and performed following the guidelines of the International Association for the Study of Pain.
: Not applicable.
: The authors declare that they have no competing interests.