Chemical constituents of (Kom.) Nakai and their cytotoxic activities.

A new diarylheptanoid, (1 ,2,3,5)-2,3-dihydroxy-3',3''-dimethoxy-4'-de--methylcentrolobine () and a new bisabolane-type sesquiterpenoid, (1 ,7)-1,12,13-trihydroxybisabola-3,10-diene (), together with nineteen known compounds (-) were isolated from the EtOH extract of the stems and branches of (Kom.) Nakai. Their structures were elucidated by extensive analysis of 1 D and 2 D NMR spectra and from the HRESIMS.

[Differential expression and significance of complement C4b and transthyretin in proliferative vitreoretinopathy].

Objective: To investigate the differential expression of complement C4b and transthyretin in proliferative vitreoretinopathy (PVR).

Methods: It was a controlled experimental study. Human vitreous samples of 5 patients with PVR were analyzed by using two-dimensional gel electrophoresis and mass spectrometry, and the results were compared with those from normal control vitreous obtained from donor eyes.