Effects of Intraperitoneal and Intrathecal Morphine Analgesia on the Expression of μ-Opioid Receptors in Bone Cancer Pain Rats.

Conclusion: Intrathecal group and intraperitoneal group showed significant difference in μ-opioid receptor expressions although with no difference in analgesia effects. Long-term intrathecal morphine administration provided similar analgesia compared to systemic morphine. PMID: 31662712 [PubMed]
Source: Dose Response - Category: Drugs & Pharmacology Authors: Tags: Dose Response Source Type: research