Wei-zhou Chen

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AIM To investigate the anti-arrhythmic effects of sulfamide analogues of changrolin and to characterize the sulfate of compound 6f (sulcardine sulfate, Sul) as a novel anti-arrhythmic agent. METHODS The anti-arrhythmic effects of compounds were studied against aconitine-induced arrhythmias in rats and ouabain-induced arrhythmias in guinea pigs. The(More)
Photosynthetic electron flow changed considerably during desiccation and re-hydration of the intertidal macroalgae Porphyra haitanensis. Activities of both photosystem (PSI) and photosystem (PSII) increased significantly at moderate desiccation levels. Whereas PSII activity was abolished at an absolute water content (AWC) <24 %, PSI remained active with(More)
The present study was designated to evaluate the antioxidant, antibacterial and antischistosomal activities of Grateloupia livida (GL) extracts in vitro. A GL Ethanol extract (EE) was separated into petroleum ether (PE), ethyl acetate (EA), n-butyl alcohol (BuOH) and aqueous (AQ) fractions to fractionate the polar and non-polar compounds in the EE. Extracts(More)
The rhodophyte Gracilaria lemaneiformis is an important macroalga of great economic value, and is cultured on the southeastern coast of China. In this study, two G. lemaneiformis strains, 981 and 07–2, were cultured at three temperatures (25, 30 and 35 °C) for 48 h. Analysis of the physiological parameters of the two strains under the heat treatments showed(More)
Gloiopeltis tenax (G. tenax) is widely distributed along the Chinese coastal areas and is commonly used in the treatment of diarrhea and colitis. This study aimed at investigating the bioactivities of the volatile constituents in G. tenax. We extracted the essential constituents of G. tenax by supercritical carbon dioxide extraction (CO₂-SFE), then(More)
Pyropia dentata is a promising species for aquaculture in South China. To develop an efficient protocol for seedling culture, the growth, development, and physiological changes of P. dentata conchocelis were investigated under different temperatures, irradiances, photoperiods, and salinity. After 25 days, conchosporangia formation at 28 °C was 5–7-fold of(More)
Black corals (BC) have been used for a long time in Chinese medicine, and may have some pharmaceutical functions when used as material for cigarette holders in southeast China. This study is aimed to investigate the bioactivities of volatile constituents in BC and to explore the folklore behind the use of BC cigarette holders (BCCHs). We extracted the(More)
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