Clinical evaluation of the efficacy of methylnaltrexone in resolving constipation induced by different opioid subtypes combined with laboratory analysis of immunomodulatory and antiangiogenic effects of methylnaltrexone

临床评价甲基纳曲酮治疗不同阿片类药物引起的便秘的疗效，并结合实验室分析甲基纳曲酮的免疫调节和抗血管生成作用。