[Glycoside compounds from Chrysanthemum indicum and their antioxidant activity].

Thirteen glycoside compounds were isolated and purified from 95% ethanol extract of Chrysanthemum indicum by normal and reversed phase silica gels, glucan gel, and high performance liquid chromatography, and their chemical structures were identified by spectroscopic data and physicochemical properties. These compounds were(2S,3R)-2,3-dihydro-3-hydroxymethyl-7-methoxy-2-benzodioxole-5-benzofuranpropanol-10-O-β-D-glucopyranoside(1), 4,6,8-decatriynyl-β-D-glucopyranoside(2), 5-(β-D-glucopyranosyloxy)-2-hydroxy benzoic acid methyl ester(3), citrusin C(4), cuminyl β-D-glucopyranoside(5), benzyl-6-[(2E)-2-butenoate]-β-D-glucopyranoside(6), benzyl β-D-glucoside(7), viridoside(8), phenylethyl β-D-glucopyranoside(9), syringaresinol-4'-O-β-D-glucoside(10), pinoresinol-4'-O-β-D-glucoside(11), isoeucommin A(12), and eucommin A(13). Among them, compound 1 was a new compound.

Short-term safety and efficacy of the biodegradable iron stent in mini-swine coronary arteries.

Background: To overcome the drawbacks of permanent stents, biodegradable stents have been studied in recent years. The bioabsorbable polymer vascular scaffold (BVS) was the first bioabsorbable stent to undergo clinical trials, demonstrating safety and feasibility in the ABSORB studies. Iron can potentially serve as the biomaterial for biodegradable stents.

[Role of aerodynamic parameters in voice function assessment].

Objective: To investigate the application and significance of aerodynamic parameters in voice function assessment.

Methods: The phonatory aerodynamic system (PAS) was used to collect aerodynamic parameters from subjects with normal voice, vocal fold polyp, vocal fold cyst, and vocal fold immobility. Multivariate statistical analysis was used to compare measurements across groups.

[Comparative study on the ultrastructures of radial and internal mammary arteries used for coronary artery bypass grafting].

Objective: The radial artery differs from internal mammary artery in its vascular biology and long-term patency after coronary artery bypass grafting (CABG). This study was designed to investigate their ultrastructural differences that may have implications in arterial remodeling and graft failure.

Methods: Thirty-four radial artery and 11 internal mammary artery samples were obtained from patients underwent CABG, and subjected to routine electron microscopic examination.

[Clinical-pathological study on 10 cases of pulmonary thromboembolism].

Objective: To improve the diagnosis of pulmonary thromboembolism (PTE) by a clinical-pathological analysis of 10 cases of PTE.

Methods: Eight cases of massive and submassive (in the segmental and larger pulmonary arteries) PTE confirmed by autopsy and 2 cases of PTE who underwent surgical treatment in the past 10 years (1991 - 2001) were studied. The specimens were fixed in 10% buffered formalin, and paraffin sections cut, and stained with HE and ET + VG.