OBJECTIVE:A RP-HPLC method to determine the contents of furacilin and ephedrine hydrochloride in compound furacilin nasal drops was established METHODS:Chromatographic detection was performed with a mixture of methanol-water-triethylamine-acetic acid(12∶88∶0 2∶1) as mobile phase and Kromasil C18(4 6mm?250mm,5?m) as separate column Chloramphenicol was selected as internal standard and the detection wavelength was 254nm RESULTS:The ingredients of compound furacilin nasal drops and internal standard were well separated within 18min Good linearities and recoveries for furacilin and ephedrine hydrochloride were obtained in their assay ranges CONCLUSION:The RP-HPLC method was found to be simple,accurate and suitable for the quality control of compound furacilin nasal drops

OBJECTIVE:To prepare ganciclovir hydrochloride chitosan eye drops and establish its quality control method.METHODS:The eye drops was prepared using chitosan as thickening agent and synergist with ganciclovir as principal agent.The content of ganciiclovir was determined by HPLC.The stability of the preparation was investigated as well.RESULTS:The prepared eye drops was colorless transparent glutinous limpid liquid with its identification items all up to the related standards stipulated in Chinese Pharmacopoeia(2005 edition).The linear range of ganciclovir was 5～80 mg?L-1(r=0.999 9) with average recovery of 99.02%(RSD=0.71%).The preparation was stable under light with all its indexes showed no obvious change in the accelerated test at 6 month.CONCLUSION:The preparation technology is simple and feasible and the quality of preparation is stable and controllable with a validity duration tentatively set at 2 years.

OBJECTIVE: To compare the pharmacokinetics and relative bioavailability between ganciclovir-chitosan eye drops and ganciclovir eye drops in rabbit eyes. METHODS: Japan big-eared rabbits were randomly assigned to the receive 50 ?L ganciclovir-chitosan eye drops (experiment group) or ganciclovir eye drops (control group) in both eyes. The rabbit tears,corneas and aqueous humor were collected at different time for the determination of drug concentration by RP-HPLC. The pharmacokinetics parameters were calculated as well. RESULTS: In the experimenal group,the half-life(t1/2) in tears,corneas and aqueous humor were 15.41,45.21,59.43 minutes,respectively versus 16.22,32.55,and 48.53 minutes in the control group. The Cmax were 2.03 ?g?mL-1 and 1.22 ?g?mL-1,respectively. In the experimental group,the AUC0→240 in tears,corneas and aqueous humor were 1.66,1.89,and 2.77 times those in control group. CONCLUSION: The bioavailability of ganciclovir-chitosan eye drops was significantly higher than that of ganciclovir eye drops.

0.05)and the main pharmacokinetic parameters were close to each other.CONCLUSION:No stereoselective differences lies in the pharmacokinetics processe of amlodipine enatiomers in the body of rabbits.

OBJECTIVE:To construct the database of“The Time and Age Limit in the Use of Common Orally Adminis-tered Drugs”in order to guide the rational drug use in patients.METHODS:The frequently used instructions of common orally administered drugs in the hospital where the authors worked were collected,and then were classified and listed according to the elements in“The Time and Age Limit in the Use of Common Orally Administered Drugs”,and further summarized according to the basic knowledge in drug administration.RESULTS:Ante cibum drugs accounted for22.2%,post cibum drugs11.7%,either ante cibum or post cibumor or unmarked drugs59.4%,bedtime drugs6.7%,wholly swallowed drugs12.2%,chewed drugs1.7%,children restricted drugs32.2%,and the drugs taken once daily with the set time accounted for13.9%.CONCL_ USION:The construction of“The Time and Age Limit in the Use of Common Orally Administered Drugs”database can guide patients to use medicine rationally.

Objective:To investigate the antitumor activity of the compound HS-4 and the action mechanism.Methods:MTT method was used to testin vitroantitumor activity of the compound HS-4. Orthotopic xenotransplantation tumor model of liver cancer was established in nude mice, and,in vivoantitumor activity of compound HS-4 was tested with a small animal in-vivo imaging system. Sequencing of small RNA library and RNA library was performed in HS-4 treated tumor cell group and control group to investigate the anti-cancer mechanism of HS-4 at level of functional genomics, using high-throughput sequencing technology. Results:HS-4 was found to have relatively highin-vitro antitumor activity against liver cancer cells, gastric cancer cells, renal cancer cells, lung cancer cells, breast cancer cells and colon cancer cells. The IC50 values against SMMC-7721 and Bel-7402 of liver cancer cells were 0.14 and 0.13 nmol/L respectively, while the IC50 values against MGC-803 and SGC-7901 of gastric cancer cells were 0.19 and 0.21 nmol/L, respectively. It was demonstrated that HS- 4 possessed a better therapeutic effect in liver cancer.Conclusions: A new reliable orthotopic xenotransplantation tumor model of liver cancer in nude mice is established. The new compounds HS-4 was found to possess relatively highin vivo andin vitroantitumor activity against liver cancer cells.

Aim To discuss the application of tissue spontane-ous fluorescence for draw focal cerebral ischemia reperfusion in-jury in rats based on specific fluorescence detection technology. Methods The change of spontaneous fluorescence WAS COM-PARED between the brains of normal rats and those of rats with draw focal cerebral ischemia-reperfusion injury and an quantita-tive analysis was then made. Result The results showed that spontaneous fluorescence of brain tissue for focal cerebral ische-mia reperfusion injury changed significantly. Spontaneous fluo-rescence signal of injury considerably enhanced. The fluores-cence signal which was quantified by IVIS had significant statisti-cal significance compared with normal brain tissue, P <0. 05. Conclusion Our research shows that spontaneous fluorescence of brain tissue enhances obviously after focal cerebral ischemia-reperfusion injury. Our research provides a method for the re-search and evaluation of focal cerebral ischemia-reperfusion inju-ry model in rats.

AIM: To establish the determination of narigin and hesperidin in Juhong Pills(Exocarpium, Citri Grandis, Pericarpium Citri Reticulatae, Radix Angelicae Sinensis, etc.). METHODS: The extraction was completed with ether. The Shim-pack ODS(?6.0mm?150mm) column was used with mobile phase of CH 3OH-CH 3COOH-H 2O(30∶4∶60). The detection wavelength was at 283nm. RESULTS: The linear range for narigin was 0.072～1.43?g, r=0.9999 and the linear range for hesperidin was 0.068～1.37?g, r=0.9999, respectively. Both the average recoveries were 99.3% and 99.4%, respectively. Both RSD were 0.6%(n=5). CONCLUSION: The method is simple and the result is reliable.

OBJECTIVE:To get to know medical staff's recognition of ADR monitoring in our city.METHODS:The concept,reporting consciousness,range and reasons for ADR reporting,reporting processes,professional organization of ADR and law consciousness of ADR etc.were investigated in400medical staff members through questionnaires on“Medical Staff's Recognition Degree to the Monitoring of ADR”.RESULTS:The medical staff in our city were basically clear about the range and the reasons for ADR reporting,but they lacked adequate recognition to the concept and the consciousness of ADR report?ing,they were not clear about the reporting processes and the organization of ADR and they lack the law consciousness of ADR reporting.CONCLUSION:It is necessary to carry out training on professional knowledge,laws and regulations of ADR among the medical staff so as to enhance their recognition to ADR monitoring and to make ADR monitoring as a self-conscious behavior.