Objective:To optimize the flash extraction process of Isatidis Radix by Box-Behnken experimental design. Methods:A flash extraction method was used with the extraction voltage, material-liquid ratio and extraction time as the independent variables. A Hassan’s method was used to calculate the normalized value(OD) of comprehensive evaluation of the dry extract yield and the epi-goitrin extraction rate in order to establish the mathematical relationship between the comprehensive evaluation OD and the independent variables, and the response surface method was used to predict the best process conditions. Results:The optimum process conditions were as follows:voltage of 88 V, material-liquid ratio of 19. 62, and extraction time of 2. 03 min. The rate of dry extract and epigoitrin extraction was 37. 902% and 0. 1887%, respectively. Conclusion:The measured value is close to the predicted one,which indicates the comprehensive flash extraction parameters optimized by Box-Behnken experimental design can be used for the extraction for Isatidis Radix.

Objective To investigate the effects of berberine on cholesterol efflux in THP-1 macrophage derived foam cells, and explore the possible mechanism. Methods HP-1 cells were induced into macrophages by phorbol myristate acetate (PMA), and were treated with acetylated low-density lipoprotein (Ac-LDL) to establish the THP-1 macrophage derived foam cell models. Foam cells were divided into blank control group and berberine (5 to 20 μmol/L) treatment groups according to the way of treatment and berberine concentrations. After treatment for 24 h, flow cytometry was employed to detect AcLDL aggregation, enzymic method was adopted to detect contents of cholesterol and triglyceride, scintillation counting technique was used to detect cholesterol efflux, and effects of peroxisome proliferator-activated receptor-γ (PPARγ) antagonist GW9662 pretreatment on cholesterol efflux (pioglitazone as positive control) were analysed. Besides, RT-PCR was applied to detect expression of liver X receptor α (LXRα) and ATP binding cassette transporter A1 (ABCA1) mRNA. ResultsCompared with blank control group, AcLDL aggregation and contents of cholesterol and triglyceride of foam cells in various berberine treatment groups decreased significantly (P＜0.01), while cholesterol efflux increased (P＜0.01) in a dose-dependent manner. After GW9662 pretreatment, there was no significant difference in cholesterol efflux between various berberine treatment groups and control group (P>0.05). Furthermore, expression of LXRα and ABCA1 mRNA of foam cells in various berberine treatment groups was higher than that in blank control group. Conclusion Berberine may increase cholesterol efflux in THP-1 macrophage derived foam cells, the mechanism of which may be associated with activation of PPARγ pathway and increase of expression of LXRα and ABCA1 mRNA.

Objective To explore the technique and the clinical value of Neuroform stents in combination with Guglielmi detachable coil(GDC) to treat wide-necked basilar artery aneurysms.Methods 30 cases with wide-necked basilar artery aneurysms were treated with Neuroform stent combined with GDC.Of 30 wide-necked basilar artery aneurysms,the location of lesions was at basilar tip in 16,basilar trunk in 9 and the beginning of the basilar in 5.Results In 30 cases,total occlusion was achieved in 25 and partial occlusion in 5 patients.The thrombosis within stent occurred in 2 patinets,and remainder of patients recovered well.There were no thromboembolic events in 20 cases followed up for 3~6 months.Twenty-two patients were angiographically followed up for 3 months after the procedure,among them,the aneurysms visualized and the arteriae burdened aneurysms were passed free in densely packed and 3 aneurysms with neck remnant.Conclusion The Neuroform stent is a easy and safe intracranial stent for embo1ization of wide-necked intracranial aneurysms,especially suitable for wide-necked basilar artery aneurysms with severely tortuous intracranial artery.

Objective To investigate the relationship between the polymorphism of transforming growth factor-β1 (TGF-β1 ) gene and risk of chronic hepatitis B virus(HBV)infection progressing to hepatocellular carcinoma(HCC).Methods 120 patients with chronic HBV infection(case group)and 100 age-and sex-matched healthy individuals(healthy control group)were randomly enrolled to this study.The polymerase chain reaction-restriction fragment length polymorphism technique was adopted to detect the single nucleotide polymorphism of TGF-β1 gene(T29C),and made the comparative analysis combined with TGF-β1 mRNA level. Results The risk of HCC occurrence in the patients carrying genotype CC was decreased than that in the patients carrying geno-type TT (OR=0.317,95%CI =0.110-0.913,P =0.033;OR=284,95%CI =0.093 -0.866,P =0.027),the risk of HCC in pa-tients carrying allele C was significantly decreased compared with that in the patients carrying allele T(OR =0.570,95%CI =0.341 -0.953,P =0.032;OR=0.548,95%CI =0.320-0.936,P =0.028).In the HCC group,the patients carrying genotype CC had the lower lever of TGF-β1 mRNA.Conclusion TGF-β1 gene polymorphism(T29C)may be related to the risk of chronic HBV infection progressing to HCC.

Objective To explore the care burden and its influencing factors of primary caregiver of patients with spinal cord injury. Methods A total of 120 primary caregiver of spinal cord injury patients were selected as research object. The general information of SCI patients and their primary caregiver were investigated by SCI patient general data questionnaire and primary caregiver in SCI patient general data questionnaire, caregiver burden of spinal cord injury were investigated bycaregiver burden inventory. The relationship between the general information of patients and caregivers and the care burden analyzed. Results Caregiver burden of elderly patients was significantly lower than that of younger ones (F=54.053,P<0.01). The more serious of spinal cord injury, the higher of care burden (F=315.104,P<0.01). The patients with neck and multiple segmental spine injury and postoperative complications had a higher care burden (F=199.203,t=6.462, 32.195,P<0.01). When the caregivers were female, spouses or children, with poor health condition, with higher education degree, and as cadres or workers, caregiver burden was higher (t=6.061,F=22.073-52.392,P<0.01). Multiple linear regression analysis showed that the degree of spinal cord injury, complications, gender, and the relationship between the patients were the main factors that influenced the care burden. Conclusions The main factors influencing the care burden are spinal cord injury degree, complications, gender, and the relationship between the patients. Clinical managers needs to develop appropriate social support system for the factors which affect the caregiver, in order to ease the caregiver′s care burden.

Objective and Method: To study the influence of angiotensin converting enzyme inhibitory peptides (ACEIP) on the expression of eNOS, iNOS, ET-1 mRNA in cultured human umbilical vein endothelial cells by semi-quantitative reverse transcription-polymerase chain reaction(RT-PCR) method and then investigate its mechanism. Results: Campared with the control, the expression of ET-1 and iNOS was lower and the expression of eNOS was higer in different ACEIP groups. Conclusion: The antihyertensive function of ACEIP partly depended on the its effect to lessen the expression of ET-1,iNOS and induce the expression of eNOS in cultured human umbilical vascular endothelial cells.

Patient satisfaction is an important index of hospital quality evaluation and performance evaluation.This study established multi-attribute patient satisfaction index system based on the theory of customer satisfaction index,determined the index weight by combination weighting approach,and graded the hospitals and adjusted the weights by the RSR method.A set of comprehensive evaluation scheme is initially formed,which is suitable for patient satisfaction evaluation and performance evaluation.

Objective:To evaluate the knowledge, attitudes and practices ( KAP) on National Essential Medi-cine System among pharmacists from secondary public hospitals in Shaanxi province. Methods: The quantitative re-search of KAP questionnaire is used, and the content of questionnaire includes personal information, knowledge, atti-tudes and practices. Results: A total of 520 copies of questionnaires were distributed and 82. 3% were effective. Respondents’ overall knowledge and attitudes are at the middle level;the main way to obtain knowledge is via training and meeting;respondents’ education level and frequency of participating in training have a significant impact on their level of knowledge;the degree of attention paid by hospitals has yet to be strengthened; and respondents are mostly concerned about the supply and distribution of essential drugs. Conclusion: In order to improve the awareness and recognition levels of pharmacists on the implementation of National Essential Medicine System in secondary public hospitals, the government should take the relevant measures, including introducing the high educated persons into secondary public hospitals, organizing related training programs and standardizing the daily monitoring of essential drugs in secondary public hospitals, etc.

Objective:To compare drug policies in Brazil, Russia, India, China, and South Africa (BRICs), sum-marize the experiences from the process of implementation and provide some suggestions to further improve the national drug policy in China. Methods:National drug polices of BRICs and experiences in the implementation of essential medicine policy were summed up systematically by means of systematic review. Results:Essential medicine policy and popular phar-macy are implemented in Brazil;Pharmaceutical separation system is established in Russia;the mode of essential medicine policy in Delhi is typical in India;Government of South African focuses on procurement and distribution of drugs. Although drug policies of BRICs have their own characteristics, the objective is to increase the public access to low-cost, high-quality drugs. Conclusions:Despite the BRICs have attained some achievements, they still face serious challenges in deep-ening the health care reform. Hence, they need to explore the measures continuingly consisting with their national condi-tions, and learn from the experiences of developed countries to further consolidate and improve the national drug policies.

Fibronectin-binding protein (FnBPA) is a protein that expresses on cell surface of Staphylococcus aureus during early stage of infection. FnBPA was capable of promoting Staphylococcus aureus to invade cells and was viewed as a potential immune target. Based on the FnBPA-A gene two recombinant expression vectors with or without Kozak sequence were constructed. After identified and confirmed by restriction enzyme digestion and sequencing they were used to immunize C57BL/6 mice. Then induced antibody titer, T lymphocyte proliferative response and experiment mice challenge test were measured. Our result indicates that humoral immune responses and challenge experiment induced by recombinant DNA with Kozak sequence were better than those without Kozak sequence (P < 0.05). For T lymphocyte proliferative response the induced effect of recombinant DNA with Kozak sequence was higher than that without Kozak sequence, but there was no significant difference (P > 0.05). We conclude that Kozak sequence could play an important role in immune response induced by FnBPA-A recombinant DNA.
Adhesins, Bacterial ; genetics ; immunology ; Animals ; Immunization ; Mice ; Mice, Inbred C57BL ; Recombinant Proteins ; immunology ; Staphylococcus aureus ; immunology ; T-Lymphocytes ; immunology ; Vaccines, DNA ; genetics ; immunology