Expression and role of CaMKII and Cx43 in a rat model of post‑stroke depression
- Shuiliang Tao
- Mengmeng Jia
- Tao Qiu
Affiliations: College of Basic Medicine, Zhengjiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China, Department of Neurology, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang 325005, P.R. China, Department of Neurology, Zhejiang Provincial Hospital of TCM, Hangzhou, Zhejiang 310006, P.R. China
- Published online on: July 17, 2019 https://doi.org/10.3892/etm.2019.7782
Copyright: © Tao
et al. This is an open access article distributed under the
terms of Creative
Commons Attribution License.
Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )
This article is mentioned in:
Expression of Ca2+/CaM‑dependent protein kinase II (CaMKII) and connexin 43 (Cx43) in a rat model of post‑stroke depression (PSD) was investigated. Rats were separated into control group (10 rats underwent a sham operation and were not ligated after incision), PSD group (13 PSD rats) and KN93 group (12 rats were treated with KN93, an inhibitor of CaMKII, on the basis of the PSD group). After PSD modeling, Longa scoring was performed, and an open field test as well as a step‑through test were carried out to observe rat behavior. RT‑qPCR and western blot analysis were used to detect the expression of CaMKII and CX43 in the hippocampus tissue. On the 14th day, the Longa scores in the PSD and KN93 groups were higher than that in the control group (P<0.05), while on the 18th day, Longa score was higher in the PSD group than that in the control and KN93 groups, and higher in the KN93 group than that in the control group (both P<0.05). In the PSD group, the Longa score on the 18th day was significantly higher than that on the 14th day, whereas in the KN93 group, the Longa score on the 18th day was significantly lower than that on the 14th day (both P<0.05). Compared with the PSD group on the 18th day, the passive avoidance defects in the KN93 group were improved, and the frequency of activity in the open field test was significantly increased. On the 18th day, the expression levels of the mRNA and protein of CaMKII were higher in the PSD group than in the control group, whereas those of Cx43 were lower in the PSD group than those in the control group (P<0.05). The mRNA and protein expression levels of CaMKII in the KN93 group were lower than those in the PSD group, but higher than those in the control group. In PSD rats, CaMKII expression is upregulated, but Cx43 expression is downregulated, and both CaMKII and Cx43 may participate in PSD. The inhibitor of CaMKII, KN93, can improve the depression in PSD rats.