Effect of quateranary ammonium salt derivative (F2) of haloperidol on calcium in vascular smooth muscle cells / 中国药理学通报

AIM　To observe the effect of quateranary ammonium salt derivative (F2) of haloperidol on calcium level in vascular smooth muscle cells (VSMCs) isolated from thoracic aortas of rat. METHODS　VSMCs were loaded with Fluo-3-AM, a calcium sensitive fluorescent dye, and ［Ca2+］i was determined by the use of laser scanning confocal microscope (LCSM). RESULTS　In Ca2+ (1.26 mmol*L-1) bath solution, intracellular calcium fluorescent intensity (FI) in VSMCs was increased when application with 30 mmol*L-1 KCl, and then was inhibited after addition with F2. The FI of the ASMCs with different concentrations of F2 (0.1,1,10,100 μmmol*L-1)within three minutes were 64%±9%(n=16, P<0.05),16%±5%(n=20, P<0.01),0.6%±0.8%(n=20, P<0.01),0.1%±0.3%(n=15, P<0.01), respectively. CONCLUSION　F2 could decrease the intracellular Ca2+ level in the VSMCs by blocking the voltage-dependent calcium channel.

Determination of Vitexin in Cajanus cajan(L.) Millsp. by HPLC / 中药新药与临床药理

Objective To develop a quantitative method to determine vitexin in Cajanus cajan (L.) Millsp. Methods The chromatographic conditions were as follows: column C18(250 mm? 4.6 mm, 5 ? m) , mobile phase being MeOH ∶ 1 % HAC (25 ∶ 75) for 20 mins and then being MeOH ∶ 1 % HAC (30 ∶ 70) after 20 mins, flow rate at 1.0 mL/min, and wavelength at 339 nm. Results The good linearity of this method was in the range of 0.104 4～ 0.522 ? g (r=0.999 4), and the average recovery of vitexin was 100.11 % ( RSD =0.63 % ).Conclusion The method is simple and sensitive with good stability, it can be suitable for the quality control of vitexin in Cajanus cajan (L.) Millsp..

Quality standard of Fuke Yangkun Pill / 中成药

AIM:To improve the quality standard of Fuke Yangkun Pill. METHODS: Fructus Viticis was(identified) by micrology,Radix Angelica sinensis,Rhizoma Chuanxiong,Rhizoma Cyperi,Radix Aucklandiae,Rhizoma Corydalis,Radix Rehmanniae,Radix Rehmanniae preparata,Radix Paeoniae alba,Radix et Rhizoma Glycyrrhizae,Fructus Amomi were identified by TLC,baicalin content was determined by HPLC. RESULTS: The TLC spots were fairly clear and distinguishable,the linear range of baicalin was within 3.28-131.2 ?g/mL.The average recovery was 100.4% with RSD 1.0%(n=6). CONCLUSION: The method is simple,and specific,and can be used for quality control of Fuke Yangkun Pill.

Effect of quateranary ammonium salt derivative (F_2) of haloperidol on calcium in vascular smooth muscle cells / 中国药理学通报

AIM To observe the effect of quateranary ammonium salt derivative (F 2) of haloperidol on calcium level in vascular smooth muscle cells (VSMCs) isolated from thoracic aortas of rat. METHODS VSMCs were loaded with Fluo 3 AM, a calcium sensitive fluorescent dye, and [Ca 2+ ] i was determined by the use of laser scanning confocal microscope (LCSM). RESULTS In Ca 2+ (1 26 mmol?L -1 ) bath solution, intracellular calcium fluorescent intensity (FI) in VSMCs was increased when application with 30 mmol?L -1 KCl, and then was inhibited after addition with F 2. The FI of the ASMCs with different concentrations of F 2 (0 1,1,10,100 ?mmol?L -1 )within three minutes were 64%?9%( n =16, P