Fabrication and Application of a Molecularly Imprinted Sensor for Morin Detection / 分析化学

Based on the intermolecular interaction, a molecularly imprinted polymer electrochemical sensor with specific identification of cavity on gold electrode surface was proposed with o-aminophenol as functional monomers and morin as template molecule. The performance and effect of MIP were investigated by cyclic voltammetry ( CV) and differential pulse voltammetry ( DPV) . Factors affecting the properties of sensor, such as polymeric membrane ratio, scanning cycles, elution time and adsorption time were investigated. Substances which had a similar structure to morin was used to compared the selective response. The result showed that the sensor had a good selectivity to morin. Under the optimized experiment conditions, the current response of the imprinted sensor was linear to the concentration of morin in the range of 0 . 05-1 . 7 μmol/L with linear equation as follows: I(μA)= 1. 0800lgc(mol/L)+ 9. 3599(R=0. 9934), and the detection limit of 0. 1 μmol/L. The sensor was used to determine the content of morin in black tea samples, and the recoveries of standard addition were between 104 . 0% and 108 . 0%.

Analysis of adverse drug reaction of gatifloxacin in Hunan province from Aug. 2003 to Jul. 2007 / 中南大学学报(医学版)

OBJECTIVE@#To summarize the occurrences of adverse drug reactions (ADR) of gatifloxacin, and to guide the rational usage of antibacterial agents in clinical practice in the future.@*METHODS@#A total of 1 077 ADR patient who received gatifloxacin were retrospectively studied in Hunan province from August 2003 to July 2007.@*RESULTS@#Gatifloxacin could cause multi-system and multi-organ ADRs with wide variety of clinical manifestations. Of the 1 077 ADR patients, ADR incidence rate was slightly lower in males than that in females, the age of 821 (76.23%) ADR patients were 20 approximately 59 years; 905 (84.03%) were administered intravenously; and 682 (33.07%) had severe lesions of the digestive system, followed by lesions of the skin and the appendants (490 cases, 23.76%) and the nervous system (298 cases, 14.45%).@*CONCLUSION@#ADR caused by gatifloxacin should be monitored and reported so as to reduce or avoid ADR.

Analysis of 3 123 Reports of Adverse Events Caused by Medical Devices / 药物流行病学杂志

Objective:To analyze 3 123 cases of medical device adverse events(MDAE)and provide some suggestions for the MDAE monitoring.Method:By the retrospective case study,3 123 MDAE reports were analyzed in Hunan Province in 2007.Result:The reports mainly came from medical institutions and other drug-use units.Intrauterine devices (IUD),medical suture thread and orthopedic implants caused a higher proportion of adverse events.The quantities of MDAE reports were imbalanced in different regions.Conclusion:The MDAE monitoring should be promoted by propaganda and training in order to ensure the safe use of medical devices in public.