Objective To establish an HPLC method for determining the content of swertiamarin in Gantaishu capsules. Methods Using a Waters Symmetry C18 column (4.6 mm×250 mm, 5μm), the mobile phase was acetonitrile-0.02%phosphoric acid, with flow rate of 1.0 mL/min. The detection wavelength was at 250 nm, the column temperature was room temperature. Results The content of swertiamarin showed a good linear relationship in the range of 0.373 556-2.988 448 μg, r 2=1.000 0. The average recovery was 106.81%, and RSD was 3.7%. Conclusion This method is fast, accurate and simple with good reproducibility, which can be applied to the quality control of Gantaishu capsules.

Objective:To establish a content determination method for the decoction pieces of ginseng radix et Rhizoma and investi-gate the quality of the slices by measuring the content of ginsenoside in commercially available crude materials and the decoction pieces. Methods:An HPLC method was used to determine the content of ginsenoside Rb1, Re and Rg1 in the crude materials and decoction pieces of ginseng radix et Rhizoma. Results:Significant difference in ginsenoside content between the medicinal materials and decoction pieces was found, and saponin content in the slices was decreased. Conclusion:The quality of the slices of ginseng radix et Rhizoma is changed significantly, and it is urgent to develop a agreed standard for the quality control of ginseng radix et Rhizoma during the process-ing.

OBJECTIVE:To establish a method for the simultaneous determination of curdione,germacrone and furanodiene of zedoray turmeric oil in Ruxiankang injection. METHODS:HPLC was performed on the column of Zorbax SB-C18 with mobile phase of acetonitrile-water (gradient elution) at a flow rate of 1.0 ml/min,detection wavelength was 216 nm,column temperature was 30℃,and the injection volume was 10 μl. RESULTS:The linear range was 60-480 μg/ml for curdione(r=0.999 0),40-320 μg/ml for germacrone(r=0.999 0)and 40-320 μg/ml(r=0.999 0);RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 95.21%-99.89%(RSD=1.6%,n=6),102.33%-104.89%(RSD=1.0%,n=6)and 97.38%-99.06%(RSD=0.7%,n=6),respectively. CONCLUSIONS:The method is simple and accurate,and can be used for simultaneous contents deter-mination of curdione,germacrone and furanodiene of zedoray turmeric oil in Ruxiankang injection.

OBJECTIVE:To develop an HPLC method for the determination of Tanshinone ⅡA in Lianchuang pills. METHODS:The chromatographic separation was performed on Agilent Zorbax SB-C18 (250mm?4.6mm,5?m) column with column temperature at 25℃. The mobile phased consisted of methanol-water (75∶25) at a flow rate of 1.0mL?min-1.The detection wavelength was set at 270nm.RESULTS:The linear range of Tanshinone ⅡA was 0.020 2～0.202 0?g(r=0.999 9).The average recovery was 99.79%(RSD=1.01%,n=6). CONCLUSION:The method is simple, rapid and accurate, and it could be used for the quality control of Lianchuang pills.

Objective To establish a method for the determination of berberine hydrochloride and phellodendrine in Lishukang Capsules by HPLC. Methods Waters Symmetry C18 column (4.6 mm× 250 mm, 5μm) was used, the mobile phase was acetonitrile-0.1%phosphoric acid (0.1 g sodidum dodecyl sulfonate in 100 mL water), with the flow rate of 1 mL/min by gradient elution. The detection wavelength was set at 284 nm. Results Berberine hydrochloride showed good linear relationship (r 2=0.999 1) in the range of 403.4-10 084.7 μg, the average recovery rate was 99.8%(RSD=1.7%). Phellodendrine showed good linear relationship (r 2=0.999 2) in the range of 169.137 6-4228.44 μg, the average recovery rate was 95.5%(RSD=3.2%). Conclusion The method is specific, accurate and convenient to be used for the quality control of Lishukang Capsules.

Objective To explore the effects and mechanism of repetitive transcranial magnetic stimulation (rTMS) applied to the right Broca's homologue of stroke patients with non-fluent aphasia.Methods One stroke patient with non-fluent aphasia received rTMS at 1 Hz and another received the same treatment at 10 Hz.The western aphasia battery (WAB) and functional magnetic resonance imaging (fMRI) were used to evaluate their language function before and after the intervention.Results After treatment,language function in both patients had improved significantly.The aphasia quotient (AQ) score of patient 1 had improved from 37.2 to 66.6,and the AQ score of patient 2 had improved from 36.2 to 60.8.Before treatment,patient 1's activated brain areas during a vocabulary reading task were the left anterior central gyrus and the left gyrus frontalis medius.After the 1 Hz rTMS treatment the activated brain areas were the left medial surface of the lobus frontalis,the left gyrus frontalis inferior,the left prefrontal area,the left preinsula,the left lobulus parietalis inferior,and the left middle/inferior temporal gyrus.Before the 10 Hz rTMS treatment,patient 2's activated brain areas with the same vocabulary reading task were the bilateral medial surface of the temporal lobe,and the bilateral anterior central gyrus.After treatment the bilateral medial surface gyrus,the frontalis medius and lobus frontalis,the right gyrus frontalis inferior,the left prefrontal area,the bilateral lobulus parietalis superior,and the right superior/middle temporal gyrus were activated.Conclusion rTMS can significantly improve language function in stroke patients with non-fluent aphasia.Patients with smaller lesions in the left hemisphere language area can achieve hemisphere function restructuring.Larger lesions in the left hemisphere language area will probably yield bilateral restructuring in both hemispheres.

OBJECTIVE:To establish a method for the identification of four chemicals-Ephedrina Hydrochloridum,prednisone acetate,codeine phosphate and dexamethasone acetate in antiasthmatic and antitussive Chinese patent medicine.METHODS:With Kening capsule(an antitussive) as positive control,the chemicals which were illegally added into the antiasthmatic and antitussive Chinese patent medicine were determined by HPLC with octadecylsilane chemically bonded silica as loading agent.RESULTS:Under the same chromatographic condition,the four chemicals could all be detected.CONCLUSION:The method is simple,practical and specific,and it can be applied to detect the illegally added chemicals in antiasthmatic and antitussive Chinese patent medicine.

Objective To explore the effect of intensity of 1 Hz repetitive transcranial magnetic stimulation (rTMS) to right Broca's ho-mologue on nonfluent aphasia after stroke. Methods 40 inpatients were equally divided into low-intensity group and high-intensity group, who received rTMS (1 Hz for 10 minutes) once a day and twice a day respectively for 10 days. They were assessed with Western Aphasia Battery (WAB) before and after intervention, and 2 months after intervention. Results The scores of content and fluency, auditory compre-hension, naming, repetition and AQ improved more in the high-intensity group than in the low-intensity group (P<0.01). It maintained more for 2 months in the scores of content and fluency, repetition and AQ (P<0.05). Conclusion High-intensity rTMS can promote the improve-ment of speech in patients with nonfluent aphasia after stroke that remains for a long term.

Objective To explore the effect of low frequency repetitive transranial magnetic stimulation (rTMS) on unilateral spatial neglect (USN). Methods 40 stroke patients with USN were divided into treatment group (n=20) and control group (n=20). Patients in the treatment group were treated with low frequency rTMS for 2 weeks. The USN degree of these groups were evaluated before and after the treatment. Results There was no significant difference of USN degree between these groups before the treatment (P>0.05); Compared with the control group, the treatment group improved significantly after the treatment (P<0.05). The USN degree of patients in the treatment group decreased significantly after the treatment (P<0.05), while patients in the controlled group had no difference (P>0.05). Conclusion USN induced by stroke could be improved obviously through low frequency rTMS.

Objective To develop a stable method for fingerprint analysis of extractum platycodi liquidum to ensure its u‐niformity and stability .Methods UPLC‐ELSD was applied to obtain a chromatogram with 11 well separated peaks ,and the chromatographic condition was as follows:mobile phase was gradient elution by acetonitrile‐water ,column was ACQUITY UPLC BEH C18 (2 .1 × 100 mm ,1 .7 μm) with the column temperature of 30 ℃ and the flow rate of 0 .2 ml/min .Results The chromatographic fingerprints were analyzed with similarity evaluation system for chromatographic fingerprint of TCM .Similar‐ities were all greater than 0 .90 ,which could meet the requirement for chromatographic fingerprint of TCM .Conclusion The stability ,repeatability and precision of the developed method were all validated ,and the chromatographic fingerprint analysis was a rapid and accurate method for the quality evaluation of traditional Chinese medicine .