The Journal of Practical Medicine >
Mechanism of TRPV1 attenuating blood ⁃brain barrier damage and anxiety ⁃like behaviors after cerebral ischemia in mice by inhibiting p ⁃JNK and p ⁃p38 MAPK signaling pathways
Department of Genetics,Xuzhou Medical University,Xuzhou 221004,China;*Xuzhou Med⁃ ical Genetics and Engineering Research Center,Xuzhou 221004,China
Online published: 2021-09-10
Objective To explore the effect of TRPV1 on blood⁃brain barrier injury and anxiety⁃like behaviors after cerebral ischemia⁃reperfusion in mice and its and mechanism. Methods A model of middle cerebral artery embolism(MCAO)was constructed by use of thread embolization. Capsazepine(CPZ)of 7.5 μg/3 uL was injected into the lateral ventricle. HE staining was used to detect pathological changes in amygdala;Immunofluores⁃ cence staining was applied to detect vascular damage in amygdala;Western blot was used to detect levels of p⁃JNK and p ⁃ p38 MAPK;High plus maze was used to detect anxiety ⁃like behaviors. Results As compared with I/R group,the moving distance and length of stay in the open arms of high plus maze in I/R+CPZ group increased significantly(P < 0.001). HE staining showed that nucleus pyknosis and edema,as compared with I/R group, were reduced in I/R + CPZ group. As compared with I/R group,Claudin5 expression was increased in I/R + CPZ group,whereas levels of p⁃JNK and p⁃p38 MAPK were significantly reduced(P < 0.05). Conclusions Inhibition of TRPV1 can alleviate damage in blood⁃brain barrier and anxiety⁃like behaviors after cerebral ischemia in mice by reducing levels of p⁃JNK and p⁃p38 MAPK.
Key words:
TRPV1
ZHANG Zhen, WANG Mei⁃ fang, SONG Yuanjian.
.
Mechanism of TRPV1 attenuating blood ⁃brain barrier damage and anxiety ⁃like behaviors after cerebral ischemia in mice by inhibiting p ⁃JNK and p ⁃p38 MAPK signaling pathways
/
| 〈 |
|
〉 |