Tissue distribution, excretion characteristics and metabolic profiling studies of oxypeucedanin in rats using liquid chromatography tandem mass spectrometry.

Oxypeucedanin (OPD) is a linear furanocoumarin extracted from Chinese herbs, which has been reported to exhibit various pharmacological effects such as analgesia, antitussive, anticancer and anti-inflammatory activities. In this paper, the tissue distribution, excretion and metabolism characteristics of OPD in rat was conducted in order to better understand this compound and for potential development of OPD as a medicine. We first used the established HPLC/MS/MS method to examine the plasma protein binding rate and the tissue distribution of OPD in rats after oral administration.

Preclinical Pharmacokinetics and Bioavailability of Oxypeucedanin in Rats after Single Intravenous and Oral Administration.

Oxypeucedanin, a furanocoumarin extracted from many traditional Chinese herbal medicines, has a variety of pharmacological effects. However, the independent pharmacokinetic characteristics and bioavailability of this compound remains elusive. In this study, a rapid, sensitive, and selective method using ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC/MS/MS) was developed for evaluating the intravenous and oral pharmacokinetics of oxypeucedanin.

N-Demethylsinomenine, an active metabolite of sinomenine, attenuates chronic neuropathic and inflammatory pain in mice.

Chronic pain is a significant public health problem that afflicts nearly 30% of the global population, but current pharmacotherapies are insufficient. Previous report indicated that N-demethylsinomenine, an active metabolite of sinomenine, is efficacious against postoperative pain. The present study investigated whether N-demethylsinomenine is effective for chronic painful conditions or whether repeated treatment alters its effect.