A Study on the Mechanism of Cinobufagin in the Treatment of Paw Cancer Pain by Modulating Local β-Endorphin Expression In Vivo

Figure 6

The representative photomicrographs of the tumor and adjacent tissues μ-OR immunohistochemistry (400x) and effect of Cinobufagin on the tumor and adjacent tissue μ-OR protein expressions in the cancer pain mice. (a) Control group; (b) model group; (c) cinobufagin group (cinobufagin, 10 mL/kg/day, i.p.); (d) cinobufagin + NAL-M group (cinobufagin, 10 mL/kg/day, NAL-M, 20 mg/kg/day i.p.); (e) morphine group (morphine, 8 mg/kg/day, i.p.). (f) Effect of cinobufagin on the tumor and adjacent tissue μ-OR protein expression. Label with red arrowheads represents μ-OR positive expression. Data are shown as the mean ± SD (𝑛=6). ^#𝑃<0.05, ^##𝑃<0.01 compared to control group; *𝑃<0.05, **𝑃<0.01 compared to model group.

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