Total paeony glycoside (TPG) is extracted and purified from a traditional Chinese herbal medicine. It has many biological and pharmacological activities. However, there are few dosage forms of TPG in the market because of its low bioavailability. Self-microemulsifying drug delivery system (SMEDDS) is a vital tool in solving low bioavailability of poor absorption drugs. So the objective of this study is to develop a new TPG-SMEDDS for the oral delivery of poorly soluble TPG. Through the construction of pseudo-ternary phase diagrams, the optimum prescription was obtained, which consisted of 18.70% TPG, 16.27% ethyl oleate as oil, 43.34% Cremophor RH40 as surfactant and 21.73% Transcutol P as cosurfactant. The characterizations of TPG-SMEDDS including morphological characterization, droplet size, zeta-potential, emulsification time, and dissolution study of TPG-SMEDDS were evaluated. The results showed that TPG-SMEDDS is stable and its release rate is high in four different media (0.1 mol x L(-1) HCl, pH 6.8 PBS, pH 7.4 PBS, and water). The relative bioavailability of SMEDDS was dramatically enhanced in an average of 1.52-fold that of TPG-suspension. It is concluded that the bioavailability of TPG is enhanced greatly by SMEDDS.

Objective To explore the clinical curative effect of electromyographic biofeedback on pointed foot in children with spastic cerebral palsy. Methods From June, 2014 to December, 2015, 80 children with spastic cerebral palsy and pointed foot were divided into con-ventional group (n=40) and electromyographic biofeedback group (n=40). The conventional group received exercise and massage, while the electromyographic biofeedback group received electromyographic biofeedback in addition. The passive range of motion (PROM) of ankle, the surface electromyographic results and the selective control results were compared before and eight weeks after treatment. Results After treatment, the PROM significantly decreased in both groups (t>9.142, P<0.001);the integrated electromyography and root mean square, and the selective control increased in both groups (t>3.456, Z>3.178, P<0.01), which were better in the electromyographic biofeedback group than in the conventional group (t>3.737, Z=-2.748, P<0.01). Conclusion Electromyographic biofeedback can further improve the foot dor-sal flexure and pointed foot gait of spastic cerebral palsy children.

Objective To study the compatibility and feasibility of construct tissue engineer bladder through biocompatibility of hair follicle stem cells (HFSCs) and heterogeneous bladder acellular matrix (BAM) in vitro and vivo.Methods The third-generation of rat HFSCs were cultured with the two-step enzymatic and different adhesion time method.The cells were identified by flow cytometry through detection expression of β1 integrin FITC-Conjugated.The New Zealand rabbit BAM were decellularized by the method of microdissection and chemical washing,and then examined by Masson staing and electron microscope to confirm no cell elements remained.The HFSCs of the rats were implanted in BAM and cultured for about 24 hours.Then the cells growth conditions on the material surface were examined by histology and scanning electron microscopy.The cells-scaffold composites were implanted in rats subcutaneously,samples and histological examination were harvested at 1,2 and 4 weeks after implantation.Results The BAM was white and translucent membranous.There were fiber network structures without cell elements remained under the examination of electron microscope.And the BAM prompted for collagen tissue composition under Masson staining,without significant residual cells.The growth condition of HFSCs beside the BAM was well that observed by inverted microscope at 48 h of co-culture.After 1 week the HFSCs extended and adhered to the matrix surface observed under the scanning electron microscope.No significant inflammatory response in rat subcutaneous implantation experiments,the single-layer cell structure in histological examination could be seen after 1 week,and multi-layer cell structure in histological examination could be seen after 4 weeks of implantation.Conclusion The biocompatibility of HFSCs and heterogeneous BAM is good,which provides a good experiment support for HFSCs to repair the bladder defects disease.

Betatrophin is a newly found factor that affects the metabolisms of sugar and fat , which is mainly ex-pressed in the liver and adipose tissue .This factor not only has an influence on the glucolipid metabolism , but also has regulating effect on replicating pancreatic βcell.Glucose and lipid metabolic disorder and the decrease in the number of pancreatic βcell are main risk factors of diabetes , diabetic great vascular complications and other com-plications.Therefore, betatrophin level has close relationship with diabetes .

Objective To understand the application and effect of problem based,case based and evidence based (PCE) combined teaching method in urology surgery clinical teaching.Methods A total of 50 clinical medicine students were selected.PCE combined teaching method was applied in urology surgery clinical teaching and the teaching effect was evaluated.Results The ratios of student who thought PCE combined teaching method could stimulate learning enthusiasm,improve learning efficiency and improve the abilities of logical thinking,inductive analysis,practical application,self-study,literature retrieval,innovation and team cooperation were 96％,94％,95％,94％,100％,88％,100％,96％ and 95％ respectively.All students thought this new teaching method could be extended in other subjects.Conclusions Application of PCE combined teaching method in urology surgery clinical teaching can achieve good teaching effect and it is worth recommending in clinical teaching.

To evaluate pharmacokinetic and metabolic characteristics of clevidipine butyrate lipid microspheres(CDB-LM)injection in mice, a novel HPLC-FLD method was developed for simultaneous measurement of clevidipine butyrate(CDB)and its metabolites clevidipine acid(MI)in whole blood samples. The chromatographic column was Waters C18(4. 6 mm×150 mm, 5 μm)and the mobile phase is consisted of acetonitrile-methanol-phosphate(2 ∶1 ∶2). The detection wavelength of FLD included excitation wavelength at 358 nm and emission wavelength at 440 nm. The pharmacokinetic parameters of CDB and MI were calculated by using DAS 2. 0. Then obtained parameters were statisticaly analyzed using PASW Statistics 18. The results showed that the half-life of CDB and MI were about 4 min and 20 min, respectively. Pharmacokinetic parameters of the low- and high-dose groups were as follows: CL of CDB were 4. 21 and 2. 72 L ·min-1 ·kg-1; AUC0-t were 3. 86 and 6. 43 mg/L ·min; MRT0-t were 7. 09 and 6. 17 min. CL of MI were 0. 34 and 0. 22 L ·min-1 ·kg-1; AUC0-t were 52. 23 and 74. 90 mg/L ·min; MRT0-t were 201. 24 and 217. 33 min. A method of protein precipitation was established, and acetonitrile was used to deal with whole blood samples. This method was simple, fast, with no interference with endogenous impurities. The results showed that the established HPLC-FLD method was simple and sensitive. It can be used to determine CDB and MI simultaneously. Comparing the low-dose group with the high-dose group, it was found that the plasma concentration-time curve of the two groups revealed the same tendency, which confirms that CDB has a short half-life and that it metabolizes to MI quickly.

Objective To investigate the prognosis value of pulmonary infection score and acute physiology and chronic health evaluation to acute exacerbation of COPD with type 2 respiratory failure. Methods 112 cases with acute exacer-bation of COPD with type 2 respiratory failure were selected as research subjects in our hospital from February 2011 to February 2014,scores of two scoring methods,actual mortality with different scores of two scoring methods,ROC curve predicted mortality of two scoring methods to chronic obstructive pulmonary disease with acute exacerbation of respira-tory failure of survival group and death group were compared. Results There were no significant differences between the two groups in PaO2、pH、PaCO2 and HCO3-(t=1.742, 1.647, 1.791, 1.082, P>0.05);but the levels of AG and poten-tial HCO3-in death group were higher than those in survival group(t=10.865, 5.993, P<0.05). APACHEⅢ,CPIS scores of survival group significantly were lower than the death group, the differences were statistically significant (t=6.254,4.397,P<0.05). Mortality of APACHⅢ score ≥25 and CPIS score ≥6 were significantly higher than patients with lower than that value, the differences were statistically significant(χ2=10.264,7.351,P<0.05). CPIS predict mortality acute exacerbation of COPD with type 2 respiratory failure, the area under the ROC curve was 0.867,APACHEⅢpredict mortality acute exacerbation of COPD with type 2 respiratory failure, the area under the ROC curve was 0.938. Conclusion CPIS and APACHEⅢ has certain prognostic value to acute exacerbation of COPD and type 2 respiratory failure,but APACHEⅢ resolution are better, it can provide a reference for disease prediction, it is worthy of applica-tion and promotion in clinical.

OBJECTIVE: To evaluate the long-term efficacy of submandibular gland transfer for prevention of xerostomia after radiotherapy for nasopharyngeal carcinoma. METHOD: Sixty-five cases of nasopharyngeal carcinoma patients were randomly divided into study group of 32 patients and control group of 33 patents. The submandibular gland was transferred to submental region on 32 cases with nasopharyngeal carcinoma before receiving conventional radiotherapy and a block was used to cover the submental region. Before radiotherapy, two groups of submandibular gland function was detected by imaging of the submandibular gland. At 60 months after radiotherapy, submandibular gland function was detected by 99mTc radionuclide scanning, the questionnaire about the degree of xerostomia was investigated respectively. Five-year survival rate was counted. RESULT: After following up for 60 months, submandibular gland uptake and secretion function in the study group was significantly higher than that in the control group, there was significant difference between the two groups (P < 0.01) respectively. The incidence of moderate or severe xerostomia in the study group was significantly lower than that in the control group (15.4% vs 76.9%, P < 0.01). Five-year survival rate of the study group and control group was 81.3% and 78.8% respectively, there was no significant difference between the two groups (P > 0.05). CONCLUSION The long-term efficacy of submandibular gland transfer for prevention of xerostomia after radiotherapy for nasopharyngeal carcinoma was well. It could improve the quality of life in nasopharyngeal carcinoma patients after radiotherapy, and did not affect the long-term efficacy of nasopharyngeal carcinoma.
Adult ; Carcinoma ; Female ; Humans ; Male ; Middle Aged ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; radiotherapy ; surgery ; Prospective Studies ; Radiotherapy ; adverse effects ; Submandibular Gland ; surgery ; Xerostomia ; etiology ; prevention & control

Objective The objective of this study was to investigate the expression and clinical significance of serum miR-NA-24(miR-24)and miRNA-509(miR-509)in patients with hepatocellular carcinoma(HCC).Methods Ninety-four HCC patients(HCC group)who visited Suining Central Hospital in Sichuan province from January 2019 to October 2020 were select-ed,and 90 healthy subjects(control group)who underwent the physical examination center at the same time were selected.The ex-pression of miR-24 and miR-509 in human liver cancer cell lines and the serum of participants in the two groups was detected by real-time quantitative polymerase chain reaction(qRT-PCR).The correlation between miR-24 and miR-509 levels and the clinicopathological characteristics and prognosis of HCC was analyzed.Results The expression of miR-24 in the serum of HCC pa-tients was significantly higher than that of the control group(3.19±0.29vs.0.66±0.20),(t=-68.601,P＜0.01),and the ex-pression of miR-509 was significantly lower than that of the control group(0.74±0.27 vs.1.24±0.28),(t=12.331,P＜0.01).The expression of miR-24 in serum was positively correlated with alpha fetoprotein(AFP)level,metastasis,and TNM stage(r=0.821,0.510,0.762,P＜0.01),and negatively correlated with the degree of differentiation(r=-0.771,P＜0.01).The expression of miR-509 in serum was negatively correlated with AFP level,metastasis and TNM stage(r=-0.820,-0.506,-0.766,P＜0.01),and negatively correlated with the degree of differentiation(r=0.775,P＜0.01).Conclusion The expression of serum mir-24 is up-regulated in HCC patients,while the expression of serum mir-509 is down-regulated.Both of them are closely related to HCC metastasis and malignancy.Clinical testing of serum miR-24 and miR-509 levels in patients can help diagnose and evaluate the condition of HCC.

Objective:To investigate the role of type Ⅵ secretion system (T6SS) in the pathogenicity and antibiotic resistance of Acinetobacter baumanii. Methods:From January 1 to December 31, 2016, a total of 45 Acinetobacter baumanii isolates were collected from patients with bloodstream infection in the First Affiliated Hospital of Wenzhou Medical University. The susceptibilities to commonly used antimicrobial agents were determined by VITEK 2 Compact automatic microbiology analyzer. Detection of T6SS characteristic gene hemolysin coregulated protein ( hcp) was achieved by polymerase chain reaction. Biofilm formations, serum resistances and competition tests of T6SS-positive/negative Acinetobacter baumanii were performed in vitro. The clinical data of patients with bloodstream infection were collected and analyzed. Chi-square test, t test and Kruskal-Wallis test were conducted for statistical analysis. Results:The positive rate of T6SS in 45 Acinetobacter baumanii isolates was 53.3% (24/45). The resistance rates of T6SS-positive Acinetobacter baumanii to ceftazidime, ciprofloxdcin, gentamicin, imipenem, levofloxacin, piperacillin/tazobactam, tobramycin and cefepime (95.8%, 95.8%, 66.7%, 95.8%, 79.2%, 95.8%, 79.2%, 91.7%)were all higher than that of T6SS-negative Acinetobacter baumanii (28.6%, 28.6%, 28.6%, 28.6%, 9.5%, 23.8%, 23.8%, 28.6%), and the differences were all statistically significant ( χ2=22.12, 22.12, 6.51, 22.12, 21.83, 24.72, 13.79, 18.97, respectively, all P<0.05). The biofilm formation ability, serum resistance and competitive ability of T6SS-positive Acinetobacter baumanii were stronger than those of T6SS-negative Acinetobacter baumanii, and the differences were all statistically significant ( t=4.99, Z=-2.61 and -2.27, respectively, all P<0.05). The positive rate of T6SS isolated from intensive care unit (ICU) ward (80.0%, 16/20) was significantly higher than that from non-ICU ward (32.0%, 8/25; χ2=10.29, P<0.05). But T6SS had no effect on the prognosis of patients ( χ2=1.74, P=0.188). Conclusions:T6SS of Acinetobacter baumanii is associated with high pathogenicity, and the high drug resistance rate makes treatment extremely difficult. Physicians need to pay much attention, especially to the patients from ICU wards.