1.The Reliability and Item Quality of Ten Medical Academic-courses From Two Angles
Yong ZENG ; Xueshan FENG ; Gang CHEN ; Yingqing LU
Chinese Journal of Medical Education Research 2003;0(04):-
Underlying both the angles of norm-referenced test and criterion-referenced test, the qualitative or(and)quantitative analysis and evaluation were made on the tests of 10 medical academic courses in recent 4 years in reliabil-ity and item quality. From the angle of norm-referenced test, 67.4 percent of the items had good quality, 60 percent ofthe tests could differentiate the classes and 12.5 percent of the papers could differentiate the individual person accord-ing to their reliability. However, from the angle of criterion-referenced test, approximately 90 percent of the items werequalified; 87.5% had high reliability to determine whether an examinee passes the test or not.[
2.Symptom scores of patients with chronic obstructive pulmonary disease and their response to different inhalation drug treatments
Qing SONG ; Cong LIU ; Ling LIN ; Xueshan LI ; Wei CHENG ; Yuqin ZENG ; Xin LI ; Rong YI ; Ping CHEN
Journal of Chinese Physician 2023;25(7):964-969,976
Objective:To analyze the response of patients with chronic obstructive pulmonary disease (COPD) with multiple and few symptoms to different inhalation drugs, including acute exacerbation and symptom changes.Methods:This study was a multi center, retrospective Cohort study. The subjects of this study were patients with chronic obstructive pulmonary disease in stable stage in 12 hospitals in Hunan and Guangxi from December 2016 to February 2022. Demographics data, lung function, Chronic Obstructive Pulmonary Disease Assessment test questionnaire (CAT) score, modified British Medical Research Council dyspnea questionnaire (mMRC) score and inhalation drug scheme of patients were collected. According to the CAT and mMRC scores, patients were divided into a multi symptom group (CAT≥10 points or mMRC≥2 points) or a few symptom group (CAT<10 points and mMRC<1 point); Subsequently, they were divided into four subgroups based on the inhalation drug regimen: long-acting anticholinergic drugs (LAMA) group, long-acting β2-receptor agonists (LABA)+ inhaled corticosteroids (ICS) group, LABA+ LAMA group, and LABA+ LAMA+ ICS group. All patients were followed up for 1 year, with minimum clinical improvement (MCID) defined as a decrease of ≥2 points in the patient′s CAT score at 6 months, and clinical symptom deterioration (CSD) defined as an increase of ≥2 points in the patient′s CAT score at 6 months.Results:A total of 929 patients with chronic obstructive pulmonary disease were included, including 719(77.4%) with multiple symptoms and 210(22.6%) with few symptoms. There was no statistically significant difference in MCID, CSD, acute exacerbation, hospitalization frequency, and mortality rate among subgroups of asymptomatic COPD patients treated with different inhalation drug regimens (all P>0.05). Among patients with multiple symptoms of chronic obstructive pulmonary disease, compared to those who use LAMA or LABA+ ICS, those who used LABA+ LAMA or LABA+ LAMA+ ICS were more likely to obtain MCID and had a more significant improvement in CAT scores, and the risk of acute exacerbation is lower (all P<0.05). Conclusions:Lesser symptomatic COPD patients should receive single drug LAMA as the initial inhalation treatment drug, while multi symptomatic COPD patients should receive LABA+ LAMA as the initial inhalation treatment drug.
3. Effect of erythrocytes, plasma proteins, and lysosomes on systemic exposure to tetrandrine and fangchinoline
Peiwei LIAO ; Wenxin WANG ; Chuan LI ; Peiwei LIAO ; Wenxin WANG ; Nannan TIAN ; Xueshan ZENG ; Lingling REN ; Yaxuan ZHU ; Weiwei JIA ; Chuan LI
Chinese Journal of Clinical Pharmacology and Therapeutics 2022;27(12):1414-1424
AlM: The Chinese medicinal herb Hanfangji is dried roots of Stephania tetrandra S. Moore (Family, Menispermaceae). Tetrandrine and fangchinoline are two major constituents of Hanfangji and these bisbenzyltetrahydroisoquinoline alkaloids possess anti - cancer and other pharmacological activities. To facilitate further pharmacodynamic investigation of these compounds, a pharmacokinetic investigation was performed in rats and in vitro. METHODS: Pharmacokinetics of tetrandrine and fangchinoline were characterized in rats p.o. or i.v. dosing an aqueous extract of Hanfangji or the individual compound. Unbound levels of systemic exposure to these two alkaloids were assessed using in vitro studies of plasma protein binding, blood-plasma partition, and lysosomal trapping. All the study samples were analyzed by liquid chromatography/mass spectrometry.RESULTS: We found two pharmacokinetic features of tetrandrine and fangchinoline. First, the two compounds had blood levels of systemic exposure substantially higher than the respective plasma levels of systemic exposure. Second, the two compounds exhibited significantly higher systemic exposure levels after p.o. dosing an aqueous extract of Hanfangji than the respective exposure levels after p.o. dosing the individual compound, at the same compound dose levels and under the same conditions for analytical measurement and the same conditions for animal study. Unbound fractions of tetrandrine and fangchinoline in rat plasma were 2%-5% and the concentrations of the alkaloids in rat erythrocytes were 5-times higher than those in rat plasma. Lysosomal inhibitor could block their trapping in lysosomes and significantly reduce their concentrations in HEK-293 cells. CONCLUSlON: The following pharmacokinetic aspects should be noted in pharmacodynamic investigation of tetrandrine and fangchinoline: extensive binding with plasma proteins, extensive binding with erythrocytes, and trapping by lysosomes of tissue cells substantially reduce the levels of unbound tetrandrine and fangchinoline in the systemic circulation.