4.Comparison of components in Coptis chinensis processed with various quantity of Evodia rutaecarpa
Yanfeng XIU ; Desheng XU ; Yi FENG ; Xiao LIN
Chinese Traditional and Herbal Drugs 1994;0(04):-
Object To investigate the berberine in Coptis chinensis Franch. processed with various quantity of Evodia rutaecarpa (Juss.) Benth. and the components absorbed from E. rutaecarpa. Methods Taking berberine, evodiamine and rutaecarpine as targets, HPLC method was used to determine the components of C. chinensis, E. rutaecarpa, C. chinensis processed with 10%, 20%, 30%, 40%, 50% E. rutaecarpa. Results The content of berberine in C. chinensis processed with E. rutaecarpa decreased, and that of C. chinensis processed with 20% and 30% E. rutaecarpa was higher than the rest. C. chinensis processed with E. rutaecarpa absorbed the components of E. rutaecarpa really. Conclusion The suitable quantity of E. rutaecarpa is 20% when processing for C. chinensis.
5.Pharmacokinetics of Paeonia lacliflora and Glycyrrhiza uralensis Compound
Lan SHEN ; Liang ZHANG ; Yi FENG ; Desheng XU ; Xiao LIN
Chinese Traditional Patent Medicine 1992;0(03):-
AIM: To study compatibility rationality of combination of Paeonia lacliflora and Glycyrrhiza uralensis. METHODS: The effective combination of paeoniflorin(44% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity) were respectively administered to rats.Pharmacokinetic change of these constituents in rat blood was studied. RESULTS: The pharmacokinetic parameters of these constituents in rat blood showed that the increases in AUC and C_(max) of effective combination group were more than that of glycyrrhizic acid group or that of liquorice flavones group.T_(max) of the former was extended with respect to the latters.Clearance of effective combination markedly slowed down. CONCLUSION: The effective combination of paeonia lacliflora and Glycyrrhiza uralensis have the advantage of either Paeonia lacliflora or Glycyrrhiza uralensis.
7.Quality evaluation system for the oral sustained- and controlled-release drug delivery systems of traditional Chinese medicine.
Yuanfeng WEI ; Xiao LIN ; Ning ZHANG ; Yi FENG
Acta Pharmaceutica Sinica 2010;45(4):430-5
Oral sustained- and controlled-release drug delivery systems of traditional Chinese medicine (TCM) are a research hotspot in the development of drug-delivery systems for TCM. The quality evaluation system is an important guarantee for the safety and efficiency of these drug-delivery systems. In this paper the methods to construct such quality evaluation system were discussed.
8.Release characteristics in vitro and pharmacokinetics of da chuanxiong fang multiunit drug delivery system in rats.
Yuanfeng WEI ; Ning ZHANG ; Xiao LIN ; Yi FENG
Acta Pharmaceutica Sinica 2011;46(9):1150-5
The drug release characteristics ofDa Chuanxiong Fang multiunit drug delivery system (DCXFMDDS) in vivo and in vitro were evaluated. Ferulic acid (FA) and senkyunolide I (SI) were used as marker components, which were two of the effective components of Da Chuanxiong Fang. And their contents were determined by HPLC. Drug release characteristics in vitro of DCXFMDDS and Da Chuanxiong pills and pharmacokinetics characteristics of DCXFMDDS and Da Chuanxiong Fang active fraction (DCXFAF) in rats were compared. It was obvious that FA released from the DCXFMDDS in a sustained fashion but SI in a fast fashion both in vitro and in vivo. The releasing process and the releasing mechanism of FA and SI from DCXFMDDS were different, but the AUC value indicated that compared with DCXFAF the extent of absorption of FA and SI from DCXFMDDS was increased. Though from the same multiunit drug delivery system, FA an SI had different drug release characteristics both in vitro and in vivo, and that may be one of the reason why DCXFMDDS has the good properties such as rapid and long-lasting effect and high efficiency.
9.Application of Chemometrics in Quantitative Characterization of Traditional Chinese Medicine
Shiyu MA ; Lan SHEN ; Yanlong HONG ; Xiao LIN ; Yi FENG
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(12):2700-2707
With the deepening of modernization of traditional Chinese medicine (TCM), the method of quantification and standardization of TCM (i.e., quantitative characterization of TCM) has been more and more widely accepted by researchers. Chemometrics processes complicated data of TCM through applied mathematics, statistics and com-puter technology. And multivariable study was introduced into the quantitative characterization of TCM with great achievements. This article reviewed existed problems of quantitative characterization in TCM, the principles, char-acteristics, limitations, commonly used statistical methods and application conditions on quantitative characteriza-tion of TCM. With this review, a reference for further study of quantitative characterization of TCM was provided and a further research idea of combination with main methods of chemometrics was given.
10.A study about prevalence rate and risk factors of preoperative deep venous thrombosis of osteoporotic hip fracture in senile patients
Xiang XIAO ; Kaiqiang FENG ; Yu YUAN ; Jin HUANG ; Yi WANG
Chinese Journal of Orthopaedics 2015;35(11):1084-1090
Objective To census the preoperative prevalence rate of deep venous thrombosis (DVT) and to evaluate the risk factors of DVT in senile osteoporotic hip fractured patients.Methods The object of study were patients aged 60 and above, and osteoporotic hip fracture by low energy injury in 2013.Based on medical records, all the patients with osteoporotic hip fracture were evaluated the signs and symptoms of DVT in 24 h, D-dimer test and underwent Doppler ultrasound screening of bilateral venous system in lower extremity after admission, and all the patients received preoperative prophylactic anticoagulation.Patients with popliteal and proximal level thrombus or floating thrombus underwent inferior vena cava (IVC) filter insertion.Outcome measures: age, gender, fracture type, D-dimer value in 24 h preoperatively, occurrence time of DVT and region, grade of preoperative American Society of Anesthesiologists, preoperative medical diseases.Results 702 of 946 hip fracture inpatients were comprised in this retrospective study.All were not founded any symptom or signs of DVT.All patients were took preoperative Doppler ultrasound screening and the results as follows: 36 of 302 patients (11.9%) with femoral neck fracture were proved preoperative thrombosis(13 male, 23 female), the average age was 72.7 year-old(range from 62-90 year-old), on the same side as the fractured hip in 31 patients, bilateral thrombosis in 5 patients.74 of 400 patients (18.5%) with intertrochanteric fracture were proved preoperative thrombosis(38 male, 36 female), the average age was 76 year-old (range from 60-95 year-old), on the same side as the fractured hip in 68 patients, bilateral thrombosis in 6 patients.The most prevalence rate of DVT were in the first day after osteoporotic hip fracture, 15 patients (41.7%) with femoral neck fracture and 38 patients (51.40%) with intertrochanteric fracture.There were more proximal level and multiple level involment thrombosis over 5 days after injury.The most thrombosis were proven at calf and popliteal vein.Conclusion The prophylaxis of DVT should be started even in the emergency department in senile patient with osteoporotic hip fracture.To avoid the risk factors, early surgery and early postoperative mobilization will be effective.