Original Article
The roles of PKA in the remifentanil-induced hyperalgesia of rats undergoing abdominal incision hernia repair
Yunan Peng, Ting Zang, Kun Ni, Kai Zhang
Published 2019-02-18
Cite as Chin J Hernia Abdominal Wall Surg(Electronic Edition), 2019, 13(1): 27-31. DOI: 10.3877/cma.j.issn.1674-392X.2019.01.008
Abstract
ObjectiveThe objective of this research was to investigate that proteinkinase A (PKA) may contribute to remifentanil-induced hyperalgesia (RIH) as the downstream of ephrinB/EphB signaling.
MethodsAged male SD rats were made into abdominal wall hernia model. A week later, they were abdominal hernia repaired under remifentanil compound sevoflurane anesthesia. We characterized the remifentanil-induced pain behaviours by evaluating thermal hyperalgesia and mechanical allodynia in a rat hind paw. Protein expression of PKA in spinal cord was assayed by western blotting.
ResultsContinuing infusion of remifentanil produced a thermal hyperalgesia and mechanical allodynia, which was accompanied with increased expression of spinal PKA protein, what appeared above was inhibited by pretreatment with EphB2-Fc, an antagonist of ephrinB/EphB.H89, inhibitors of PKA, suppressed pain behaviours induced by remifentanil infusion and reversed the increased pain behaviours induced by intrathecal injection of ephrinB2-Fc, an agonist of ephrinB/EphB.
ConclusionsOur findings confirmed that PKA is involved in remifentanil-induced hyperalgesia related to ephrinB/EphB signaling. EphrinB/ EphB signaling might be the upstream of PKA. This study provides fundamental theory for novel intervention targets for treatment of remifentanil-induedhyperalgesia.
Key words:
Abdominal incisional hernia; Remifentanil; Hyperalgesia
Contributor Information
Yunan Peng
Department of Anesthesiology, Affiliated Drum-Tower Hospital of Medical College of Nanjing University, Nanjing, Jiangsu Province, China
Ting Zang
Department of Anesthesiology, Affiliated Drum-Tower Hospital of Medical College of Nanjing University, Nanjing, Jiangsu Province, China
Kun Ni
Department of Anesthesiology, Affiliated Drum-Tower Hospital of Medical College of Nanjing University, Nanjing, Jiangsu Province, China
Kai Zhang
Department of General Surgery, Affiliated Drum-Tower Hospital of Medical College of Nanjing University, Nanjing, Jiangsu Province, China