3A and 3B), the Student’s t test with a 95% confidence interval

3A and 3B), the Student’s t test with a 95% confidence interval was utilized. For all other statistical analysis, a two-way ANOVA with a 95% confidence interval was performed.

Statistical significance was determined with P-values < 0.05. All data are expressed as mean ± SEM. For post hoc analysis, Bonferroni's test was performed. Results Intrathecal (i.t.) injection of AM1241 reverses CCI-induced allodynia in a dose-dependent manner Limited evaluation exists for i.t. spinal application of CB2R agonists Inhibitors,research,lifescience,medical to control allodynia produced by CCI, a widely used and well-characterized rodent model of chronic peripheral neuropathy with related pain-like behaviors (Bennett and Xie 1988). We first examined if the putative CB2R agonist from the aminoalkylindole class, AM1241 (36-fold CB2R > CB1R) (Yao et al. 2006; Thakur Inhibitors,research,lifescience,medical et al. 2009), could reverse ongoing allodynia produced by CCI. Prior to Rapamycin AY-22989 surgical manipulation, all groups exhibited similar bilateral (ipsilateral and contralateral) BL thresholds (ANOVA, F(5,35) = 1.105; P = 0.3764 and ANOVA, F(5,35) = 2.632; P = 0.5884, respectively)

(Fig. 2A and 2B). Following CCI, clear bilateral allodynia developed by Day 3 and continued chronically through Day 10 compared to sham-operated rats (ANOVA, Inhibitors,research,lifescience,medical F(10,56) = 73.23; P < 0.0001 and ANOVA, F(10,56) = 71.32; P < 0.0001, respectively). On Day 10, compared to i.t. control injected neuropathic rats, AM1241 produced a dose-dependent reversal of allodynia, with maximal reversal observed at 1.5 Inhibitors,research,lifescience,medical h following the highest injected dose (10 μg). However, allodynia fully returned by 3 h after i.t. AM1241 treatment, with allodynia remaining constant through 24 h. While 0.1 μg produced attenuated

allodynia, 0.01 μg did not alter allodynia for either the ipsilateral (Fig. Inhibitors,research,lifescience,medical 2A) (ANOVA, F(15,84) = 138.8; P < 0.0001) or contralateral (Fig. 2B) hindpaw responses (ANOVA, F(15,84) = 131.6; P < 0.0001). Post hoc analysis revealed that 10 μg AM1241 yielded maximal reversal similar to pretreatment BL values at 1.5 h after injection (P > 0.05). Figure 2 Intrathecal (i.t.) AM1241, a cannabinoid 2 receptor agonist reverses CCI-induced allodynia. (A and B) AM1241 reverses CCI-induced allodynia in Drug_discovery a dose-dependent manner. Before surgical manipulation, all AM1241 BL values of experimental groups exhibited … Spectral analysis versus standard Image J fluorescent analysis Although previous reports detail an observed increase of IL-1β IR within the dorsal horn of the spinal cord after nerve ligation with chromic gut or silk sutures (Hashizume et al. 2000), detecting statistically significant changes in IL-1β IR has been problematic. Meanwhile, the use of spectral analysis procedures in other studies has demonstrated increased accuracy and sensitivity for the detection of inhibitor Ixazomib cell-specific markers (Constantinou et al. 2009; Mahad et al. 2009; Andres et al. 2010).

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