Journal: Brain Communications
Article Title: Gonadotropin-releasing hormone alleviates chronic pain-related depression in male mice by rebalancing the anterior cingulate cortex excitatory-inhibitory processes via the protein kinase C/Erb-B2 receptor tyrosine kinase 4 pathway
doi: 10.1093/braincomms/fcag138
Figure Lengend Snippet: ErbB4 is the downstream target of GnRH signalling to regulate the E/I balance and pain-related depression-like behaviour induced by CFA injection . ( A ) The localization of GnRHR (green) with ErbB4 (red) in the ACC of mice, bar = 200 μm. ( B ) Effects of Trip treatment on the protein level of p-ErbB4 are demonstrated by western blot and the semiquantitative analysis of p-ErbB4 relative to ErbB4, and the original uncropped blots are shown in . ( C ) Effects of GnRH overexpression on the protein levels of p-ErbB4 are demonstrated by western blot and the semiquantitative analysis of p-ErbB4 relative to ErbB4, and the original uncropped blots are shown in . ( D ) The experimental timeline for Trip and dacomitinib treatment after CFA injection. ( E ) Effects of Trip and dacomitinib treatment on the total movement distance of mice in the OFT. ( F ) Effects of Trip and dacomitinib treatment on the sucrose preference rate of 1% sucrose solution in the SCPT. ( G ) Effects of Trip and dacomitinib treatment on the immobility time within 4 min in the TST. ( H ) Effects of Trip and dacomitinib treatment on the immobility time within 4 min in the FST. ( I ) Effects of Trip and dacomitinib treatment on the protein levels of p-ErbB4, GAD67, VGAT, vGluT1 and vGluT2 are demonstrated by western blot and the semiquantitative analysis of these proteins relative to ErbB4 or β-actin, and the original uncropped blots are shown in . n = 6 mice per group for western blot test and n = 4–5 per group for behaviour tests and any value >2 SD from the group mean was considered an outlier and excluded from the analysis. One-way ANOVAs followed by Bonferroni’s post hoc testing for multiple comparisons among Trip or dacomitinib treatment groups. Two-way ANOVAs followed by Bonferroni’s post hoc testing for multiple comparisons among Lv-GnRH overexpression groups. Each data point represents the data of one mouse. * P < 0.05, ** P < 0.01 and *** P < 0.001. Abbreviations: ACC, anterior cingulate cortex; NS, normal saline; CFA, complete Freund’s adjuvant; ErbB4, Erb-B2 receptor tyrosine kinase 4; p-ErbB4, phosphorylated-Erb-B2 receptor tyrosine kinase 4; Lv, lentivirus; GFP, green fluorescent protein; GnRH, gonadotropin-releasing hormone; GnRHR, gonadotropin-releasing hormone receptor; OE, over expression; Trip, triptorelin; Dac, dacomitinib; GAD67, glutamate decarboxylase 67; VGAT, vesicular γ-aminobutyric acid transporter; vGluT1, vesicular glutamate transporter 1; vGluT2, vesicular glutamate transporter 2; OFT, open field test; SCPT, sucrose preference test; TST, tail suspension test; FST, forced swimming test.
Article Snippet: GAD67 , Boster , Rabbit , 67 , 1:500 , BA0603-2.
Techniques: Injection, Western Blot, Over Expression, Saline, Adjuvant, Suspension