Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 6 de 6
Filter
Add filters








Language
Year range
1.
China Pharmacy ; (12): 729-734, 2022.
Article in Chinese | WPRIM | ID: wpr-923010

ABSTRACT

OBJECTIVE To compar e the volatile components of Cuscuta chinensis and its processed products ,and to conduct principal component analysis (PCA). METHODS The volatile components of C. chinensis ,C. chinensis stir-frying with saltwater , C. chinensis stir-frying with wine were identified by headspace solid phase microextraction combined with gas chromatography- mass spectrometry. The relative percentage of each component was calculated by area normalization method. The PCA was conducted by using SPSS 21.0 software. RESULTS A total of 117 compounds were identified from C. chinensis ,C. chinensis stir-frying with saltwater and C. chinensis stir-frying with wine ,of which 68 compounds were identified from C. chinensis (relative percentage of 92.41%),such as phytone ,2-methoxy-3-(2-propenl)phenol,n-pentadecane,β-caryophyllene. Sixty compounds (relative percentage of 89.41%) were identified from C. chinensis stir-frying with saltwater ,such as maltol ,2,3-dihydro- benzofuran,4-vinyl-2-methoxyphenol. Fifty-eight compounds (relative percentage of 87.02%)were identified from C. chinensis stir-frying with wine ,such as phenylethanol ,β-caryophyllene,macrocarehe D. There were 24 common components in the three , and relative percentage of them were 38.56%,30.61%,33.07%,respectively. After processing ,there were 49 new components , such as furfural ,n-hexanoic acid ,caryophyllene oxide. The results of PCA showed that the cumulative contribution rate of the former two principal components was 100% ;comprehensive score of volatile components of C. chinensis was the highest , followed by C. chinensis stir-frying with wine and C. chinensis stir-frying with saltwater. CONCLUSIONS The quality of volatile components in C. chinensis is good ;the volatile components in processed products are more than those in C. chinensis .

2.
Chinese Journal of Biotechnology ; (12): 1139-1154, 2021.
Article in Chinese | WPRIM | ID: wpr-878620

ABSTRACT

Microneedles have been developed rapidly in the field of transdermal administration in the past few decades. In recent years, the development of microelectronics technology has expanded the applications of microneedles by combining with microelectronic systems, especially in biological diagnosis and treatment. Different types of microneedles have been designed to extract blood and tissue fluids for detection, or as electrodes to directly detect blood sugar, melanoma and pH in real-time in vivo, both show good prospects for real-time detection applications. In this paper, we review the design of materials and structure of microelectronic-based microneedles, and discuss their advances in biological diagnosis.


Subject(s)
Administration, Cutaneous , Drug Delivery Systems , Electrodes , Microinjections , Needles
3.
Article in Chinese | WPRIM | ID: wpr-699129

ABSTRACT

Objective To investigate the clinical effect of radiofrequency ablation (RFA) combined with non-specific sequential immunotherapy (IM) for early hepatocellular carcinoma (HCC),and analyze the factors affecting prognosis of patients after RFA.Methods The prosepctive study was conducted.The clinicopathological data of 72 early HCC patients who were admitted to the People's Hospital of Guangxi Zhuang Autonomous Region from January 2009 to October 2015 were collected.Patients were divided into 3 groups by random number table:patients in group A underwent single RFA therapy;patients in group B underwent RFA + non-specific sequential IM (1-3 times);patients in group C underwent RFA + non-specific sequential IM (≥ 4 times).RFA was performed by the same doctors team,and non-specific sequential IM planning included thymalfasin + interleukin-2 (IL-2).Observation indicators:(1) treatment situations;(2) follow-up and survival;(3) analysis of prognostic factors after RFA.Follow-up using outpatient examination was performed to detect tumor recurrence and overall survival up to December 2015.Measurement data with normal distribution were represented as (x) ± s,and comparison among groups were evaluated with the ANOVA.Comparison of count data were analyzed using the chi-square test.The curve,rate and time of tumor recurrence after treatment,overall survival curve and time were respectively drawn and calculated by the Kaplan-Meier method,and the Log-rank test was used for survival analysis.The univariate analysis and multivariate analysis were respectively done using the COX proportional hazard regression model.Results Seventy-two patients were screened for eligibility,including 31 in group A,22 in group B and 19 in group C.(1) Treatment situations:patients in 3 groups underwent RFA,and contrast enhanced ultrasound showed complete tumors ablation at 5 days postoperatively.Patients in group B and C didn't have significant adverse reactions after RFA during IM therapy.(2) Follow-up and survival:72 patients were followed up for 2-66 months after treatment,with a median time of 34 months.The 1-year tumor recurrence rates after treatment in group A,B and C were respectively 19.4%,13.6% and 10.5%,with no statistically significant difference (x2=0.714,P>0.05).The median tumor recurrence times in group A,B and C were respectively 24.0 months,30.0 months and 33.0 months,with no statistically significant difference (x2 =3.283,P>0.05).The median overall survival times in group A,B and C were respectively 46.0 months,56.0 months and 57.0 months,with a statistically significant difference (x2=7.079,P<0.05).There were statistically significant differences between group A and group B and C (x2 =4.566,4.243,P<0.05),and no statistically significant difference between group B and group C (x2 =0.078,P>0.05).(3) Analysis of prognostic factors after RFA:results of univariate analysis showed that initial tumor,tumor number,Barcelona clinic liver cancer (BCLC)staging and sequential IM after RFA were related factors affecting prognosis of early HCC patients [hazard ratio (HR)=2.636,2.530,0.145,0.582,95% confidence interval (CI):1.218-5.703,1.110-5.767,0.041-0.517,0.321-0.867,P<0.05].Results of multivariate analysis showed that tumor number > 1,staging B of BCLC and without sequential IM after RFA were independent risk factors affecting prognosis of early HCC patients (HR=2.376,2.683,0.567,95%CI:1.080-5.229,1.530-21.112,0.335-0.962,P<0.05).Conclusions The non-specific sequential IM of thymalfasin + IL-2 can prolong survival time of early HCC patients after RFA.Tumor number > 1,staging B of BCLC and without sequential IM after RFA are independent risk factors affecting prognosis of early HCC patients.

4.
China Pharmacy ; (12): 2750-2753, 2017.
Article in Chinese | WPRIM | ID: wpr-616332

ABSTRACT

OBJECTIVE:To investigate the influence of cephalosporins antibiotics on cost and length of hospital stay in pa-tients underwent gallbladder calculus resection,and to provide reference for drug use in clinic. METHODS:A total of 1866 patients underwent gallbladder calculus resection were collected from 9 third grade class A hospitals in Guangxi during 2013-2014. SPSS 22.0 software was adopted to analyze cost and length of hospital stay in patients underwent gallbladder calculus resection. RESULTS:Multi-factor analysis showed that the factors which significantly affected the cost and length of hospital stay were antibiotics,hospi-tals,age,surgery types and disease species (all P0.05). CONCLUSIONS:Cephalospo-rins antibiotics can significantly influence the cost and length of hospital stay in patients underwent gallbladder calculus resec-tion. Antibiotics selection canbe considered comprehensively ac-cording to local medical resources and the patients'demands.

5.
Article in Chinese | WPRIM | ID: wpr-497837

ABSTRACT

Objective To investigate the mechanisms of hypoxia inducible factor-2 alpha (HIF-2a) regulating human umbilical vein endothelial cells (HUVECs) under hypoxic conditions.Methods The experimental study was adopted.(1) HUVECs in logarithmic growth phase were taken:HUVECs without any disposals as control group,HUVECs with shRNA transfection control as shRNA control group,HUVECs with HIF-2α shRNA transfection as HIF-2α shRNA group and HUVECs with HIF-2α shRNA transfection then added rhAng-2 as HIF-2α ± rh-Ang-2 group.(2) Western blot testing:the expressions of Ang-2 and HIF-2α proteins in HUVECs were cultured under hypoxia conditions at 0,2,4,8,12,16,20 hours,and the levels of which were detected in the control group,shRNA control group and HIF-2α shRNA group.(3) Enzyme-linked immunosorbent assay(ELISA):the level of Ang-2 protein in supernatant of HUVECs was detected in the control group,shRNA control group and HIF-2α shRNA group.(4)The amounts of endothelial cell tubes in HUVECs among the 4 groups were detected by tube formation experimental testing.(5) Transwell method was performed to detect the amounts of cells migration in HUVECs and hepatoma cells SMMC-7721 migration intervened by supernatant of HUVECs among the 4 groups.Measurement data with normal distribution were presented as x ± s,repeated measurement data were analyzed by the repeated measures ANOVA,comparison among groups and pairwise comparison were conducted respectively by the one-way ANOVA and Dunnett's test.Results (1) Western blot test:the expression levels of Ang-2 and HIF-2α proteins in HUVECs under hypoxia conditions at 0,2,4,8,12,16,20 hours were 0.110 ±0.011,0.120 ±0.020,0.210 ±0.070,0.410 ±0.100,0.520 ± 0.090,0.790±0.130 1.010 ±0.220 and 0.180 ±0.090,0.410 ±0.070,0.470 ±0.110,0.470 ±0.070,0.580 ± 0.120,0.690 ± 0.140,0.920 ± 0.130,respectively,and which were increased after culturing under hypoxia conditions and had an ascending tendency as the hypoxia time extended,with statistically significant differences (F =403.550,3 265.587,P < 0.05).The expression levels of Ang-2 and HIF-2α proteins in the control group,shRNA control group and HIF-2α shRNA group were 1.030 ±0.180,1.070 ±0.120,0.210 ± 0.070,and 0.940 ± 0.110,0.930 ± 0.190,0.170 ± 0.021,respectively,showing statistically significant differences (F =290.242,26.688,P < 0.05).(2) The results of ELISA:the expression levels of Ang-2 in the control group,shRNA control group and HIF-2α shRNA group were (433.2 ±9.7)ng/L,(438.3 ± 2.6)ng/L,(114.6 ± 4.2) ng/L,with a statistically significant difference (F =2 642.180,P < 0.05).(3) The results of tube formation experiments:the number of endothelial cell tubes in the control group,shRNA control group,HIF-2α shRNA group and HIF-2α ± rh-Ang-2 group were 48.3 ± 2.5,47.4 ± 3.1,19.7 ± 1.5 and 38.3 ± 2.1,respectively,with a statistically significant difference (F =148.196,P < 0.05).(4) The results of Transwell method:① the number of HUVECs migration in the control group,shRNA control group,HIF-2α shRNA group and HIF-2α + rh-Ang-2 group were 140.3-± 3.5,142.7 ± 2.1,42.7 ± 3.1 and 78.1 ± 4.2,respectively,showing a statistically significant differences (F =212.205,P < 0.05).②The results of Transwell method:the number of SMMC-7721 cells migration after intervening using four different supernatant in the control group,shRNA control group,HIF-2α shRNA group and HIF-2α ± rh-Ang-2 group were 106.7 ± 5.5,102.7 ± 6.6,63.0 ± 3.3 and 96.7 ± 2.1,respectively,showing a statistically significant difference (F =55.122,P < 0.05).Conclusion HIF-2a could not only affect HUVECs formation but also promote SMMC-7721 cells migration via regulating Ang-2 expression.

6.
Article in Chinese | WPRIM | ID: wpr-543815

ABSTRACT

Objective To introduce the experience of Australia National Liver Transplant Unit (ANLTU) about adult orthotopic liver transplantation with arterial conduit usage for hepatic artery revascularization. Methods The 31 cases of adult orthotopic liver transplantation with arterial conduit usage for hepatic artery revascularization from 1986 to 2003 in the ANLTU were identified from records. The indication of arterial conduit use was as following: small caliber of hepatic artery (HA), HAT, hepatic hila adhesion, dissection of HA, mycotic aneurysm-ligated and ligated HA for haemobilia of the first graft. Eighteen of 31 cases were primary transplant and the others were retransplant. Results Fifteen patients ( 48.4 %) were alive at the time of data analysis. The mean survival time for the survivors was 4.1 years compared to a mean survival time of 34.56 days for 16 patients ( 51.6 %) who deceased. The mortality was 76.9 % in retransplant cases versus 33.3 % in primary transplant (P

SELECTION OF CITATIONS
SEARCH DETAIL