[Relationship between changes of endogenous nitric oxide synthase inhibitor and hydrolase and initiation of pre-eclampsia].

Objective: To investigate the role of dimethylarginine dimethylaminohydrolase-2 (DDAH-2)/asymmetric dimethylarginine (ADMA) in pathophiology of preeclampsia by detecting expression of DDAH-2 in placenta and serum plasma ADMA.

Methods: From Jan. 2004 to Jan.

[Study on the metabolite of stilbene glucoside in mice by liquid chromatography tandem-mass spectrometry].

Aim: To study the metabolite of stilbene glucoside in the Chinese traditional medicine Polygonum multiflornm in mice and elucidate its chemical structure by liquid chromatography tandem-mass spectrometry.

Methods: The stilbene glucoside was injected into the tail vein of mice. Blood samples were collected from artery in the eyepit.