PBL tutoring is quite different from the traditional tutoring and emphasizes the importance of student-centred instead of teacher-centred education.In PBL,teachers guide students to find answers to their own questions and facilitate students' learning process.Therefore,the tutor role is complex and has a fundamental change.

Medicine, Chinese Traditional ; methods ; Systems Theory

With the development of natural products, the research activities on the solubilization methods of water-insoluble natural products have been carried out worldwide. Big molecular weight and poor solubility of most natural active ingredients lead to a very poor oral absorption and low bioavailability, which has extremely limited their development in pharmaceutical fields and clinical application. As a result, it is necessary to find out a suitable technique to improve the solubility and enhance the oral bioavailability of insoluble natural drugs. Based on the related references published in these years, this review introduced some new techniques to improve the solubility and bioavailability of natural drugs, including prodrugs, inclusion complex, solid dispersion, cocrystals, osmotic pump, liquisolid compacts, micronization, self-microemulsifying, nanosuspensions, lipsomes, polymeric micelles and so on, and summarized the theory, characteristics, application range, application examples, problems and development direction of each technique.
Administration, Oral ; Biological Availability ; Biological Products ; administration & dosage ; chemistry ; pharmacokinetics ; Chemistry, Pharmaceutical ; methods ; trends ; Solubility ; Technology, Pharmaceutical ; methods ; trends ; Water

Objective To analyse the mutation of K17 gene in a pedigree with steatocystoma multi-plex. Methods Blood samples were obtained from 3 affected and 3 normal individuals in a family with steatocystoma multiplex, as well as from 50 unrelated healthy individuals. Mutation scanning was carried out by PCR and direct sequencing. Results A heterozygous nucleotide transition (C→T) at position 428 in exon 1 of KI7 gene, which leads to the substitution of CGC (arginine) by TGC (histidine) at codon 94, was detected in the affected individuals, but not in normal family members or the 50 unrelated individuals. Conclusion A missense mutation (428C→T) in KI7 gene has been detected in affected individuals of this family, which seems to be a molecular basis of pathogenesis of steatocystoma multiplex.

Objective　To study the diagnosis, treatment and prognosis of hepatolithiasis combined with cholangiocarcinoma. Methods　The clinical, pathological and follow-up data of 17 cases of hepatolithiasis combined with cholangiocarcinoma were retrospectively analysed. Results　The results showed that the incidence of cholangiocarcinoma in hepatolithiasis was 5% in this series. 17.6% of the patients were diagnosed as cholangiocarcinoma preoperatively. Tumor occurring in intrahepatic ducts was 88.2% and in hepatic porta ducts 11.8%. Nine cases were well-differentiated adenocarcinomas. Only 7(41.2%) cases were radically resected and their average survival time was 26.0 months. Eight(47.1%) patients underwent internal drainage with average survival time 12.4 months. 2(11.7%) cases subject to external drainage with survival time 3.6 months. Conclusions　If patients with hepatolithiasis have a long history of recurrent cholangitis, weight-loss in a short period, progressive jaundice or intractable abdominal pain, the possiblility of combined with cholangiocarcinoma should be considered. Resection of the tumor has a better prognosis than that of tumor unresected; and the prognosis of internal drainage is better than that of external drainage.

BACKGROUND:Periarticular multimodal drug cocktail injection for pain management after total knee arthroplasty (TKA) has been reported,but there are few studies concerning its effect on the range of motion and volume of drainage postoperative,and difference to nerve block.OBJECTIVE:To compare the analgesic effect of periarticular multimodal drug injection and nerve block in TKA.METHODS:Fifty-eight patients undergoing primary unilateral TKA in the First Affiliated Hospital of Anhui Medical University from 1 June 2016 to 31 October 2016 were randomly assigned to experimental and control groups (n=29 per group),followed by received a periarticular intraoperative injection of a 100 mL mixture containing ropivacaine,epinephrine,morphine,and normal saline,and preoperative combined femoral and sciatic nerve block,respectively.Subsequently,the Visual Analogue Scale scores,and range of motion,volume of drainage,hospitalization time,number of the patients given remedial analgesia and complications were compared between two groups.RESULTS AND CONCLUSION:(1) The Visual Analogue Scale scores at rest in the experimental group were significantly lower than those in the control group at 3 days after surgery (P ＜ 0.05).(2) The Visual Analogue Scale scores on movement in the experimental group were significantly lower than those in the control group at 1,2 and 3 days after surgery (P ＜ 0.05).(3) There were no significant differences in the range of motion,volume of drainage,hospitalization time and number of the patients give remedial analgesia between two groups postoperatively (P ＞ 0.05).(4) None appeared with obvious nausea,vomiting and other complications in the two groups.(5) These results indicate that the analgesic effect of periarticular multimodal drug injection is superior to nerve block,and the former is easy to operate,economical and practical.

Objective To investigate the incidience of anxiety or depression in the families of chronic diseases and to discuss the relationship between anxiety or depression and coping style. Methods Using SAS, SDS,SCSQ as main tools,questionnaire investigation was made in 232 families of chronic diseases. Results The incidence of anxiety was 25.9%, and that of depression was 43.1%, and the incidence of concurrence was 25.9%. The mental health level was asscociated with the sex, active response of families, the age, disease course of the patients, hospitalization costs, economic conditions. Conclusions The families of chronic diseases patients have different degrees of negative mood, which affects the patients. Therefore, enchancing the mental intervation of families of chronic diseases will do good to the recovery of diseases and improvement of life quality.

Linalool, as a major volatile compound, is widely distributed in natural plant essential oil. In addition, it can also be artificially synthesized. Linalool is used frequently as an important ingredient of perfumes and household detergents. It is still employed in food flavor and industries. Besides, linalool has some positive effect on healthcare. Many studies have showed that linalool exhibited a variety of pharmacological activities, including analgesic, anxiolytic, sedative, anti-inflammatory, anti-tumor and anti-bacterial effects. Therefore, linalool will be a promising agent for clinical application. This article reviews the pharmacological effects and formulation studies of linalool so as to provide a theoretical basis for its further development and utilization.
Animals ; Anti-Anxiety Agents ; chemistry ; pharmacology ; Anti-Inflammatory Agents ; chemistry ; pharmacology ; Chemistry, Pharmaceutical ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; Hypnotics and Sedatives ; chemistry ; pharmacology ; Monoterpenes ; chemistry ; pharmacology

flow cytometry.A strong linear relationship was observed in the standard curve of real-time PCR of each bacteria. Conclusion These three non-culture methods can be used in the quantitative analysis of oral microorganisms.Real-time PCR and laser scanning confocal microscopy are better than the traditional culture-based CFU count,and real-time PCR is the most sensitive method.

Objective To detect the differential gene expression between Streptococcus sobrinus(S.sobrinus) 6715 and its fluoride-resistant strains. Methods The fluoride-resistant strains of S.sobrinus 6715 was induced by increasing the concentration of fluoride step by step.Total RNA of both S.sobrinus 6715 and its fluoride-resistant strains was extracted,mRNA was separated and purificated,and then cDNA was obtained by reversed transcription.Suppression subtractive hybridization(SSH) technology was used to detect the differential gene expression between them.The differential gene expression fragments were cloned and compared with the GenBank by BLAST.Results After comparing with the GenBank by BLAST,it was identified that there were two differential gene expression fragments,fruA and SMU.438c. Conclusion The cDNA subtractive lib of differential gene expression between S.sobrinus 6715 and its fluoride-resistant strains was successfully constructed through SSH,which paves a way for the further study of fluoride-resistant mechanism.