1.Matrix metalloproteinase-1 and matrix metalloproteinase-3 polymorphisms in promoter regions and ovarian cancer susceptibility:a Meta analysis
Xuming ZHU ; Guoqian CHEN ; Weifeng SUN
Chongqing Medicine 2015;(3):353-355
Objective To evaluate the association between matrix metalloproteinase‐1 (MMP‐1)‐1 607 bp 1G/2G and matrix metalloproteinase‐3(MMP‐3)‐1 171 bp 5A/6A polymorphisms in promoter regions and susceptibility to ovarian cancer by Meta‐a‐nalysis .Methods Case‐control studies with regards of relationship between MMP‐1‐1 607 bp 1G/2G ,MMP‐3‐1 171 bp 5A/6A pol‐ymorphisms in promoter regions and susceptibility to ovarian cancer were searched in electronic databases .Odds ratio (OR) and 95% confidence interval (CI) were used to evaluate the association between polymorphisms and susceptibility .RevMan5 .0 software was applied for data analysis .Results Eight studies ,containing 5 studies for MMP‐1 and 3 studies for MMP‐3 ,were selected .For MMP‐1‐1 607 bp 1G/2G ,OR(95% CI)=0 .95 (0 .74-1 .21) ,P=0 .67 under 1G/1G :1G/2G+2G/2G model ,OR(95% CI)=0 .93 (0 .70-1 .23) ,P=0 .60 under 1G/1G :2G/2G model ,OR(95% CI)=0 .99 (0 .87-1 .14) ,P=0 .91 under 1G :2G model;for MMP‐3‐1 171 bp 5A/6A ,OR(95% CI)=0 .97(0 .68-1 .38) ,P=0 .85 under 5A/5A+5A/6A :6A/6A model .Overall ,there was statisti‐cal significance .Conclusion It is still not confirmed that significant association between the MMP‐1‐1 607 bp 1G/2G and MMP‐3‐1 171 bp 5A/6A polymorphisms in promoter regions and susceptibility to ovarian cancer exists in current literature .
2.An analysis on the diagnosis and treatment of abdomen postsurgical gastroparesis syndrome
Guanghua PEI ; Gejin ZHU ; Weifeng CHEN
Clinical Medicine of China 2011;27(5):519-521
Objective To summarize the clinical features,diagnosis and treatment principles of abdomen postsurgical gastroparesis syndrome(PGS).Methods The clinical data of 28 patients with abdomen postsurgical gastroparesis syndrome,collected from our hospital in the past ten years,were analyzed retrospectively.Results All 28 patients were cured by conservation therapy.The average gastric dynamics response time was 20.2 days(12.0~34.0 days),which included 2 cases recovered within 1-2 weeks,17 cases recovered within 2-3 weeks,7 cases recovered within 3-4 weeks,2 cases recovered over 4 weeks.Conclusion PGS is a functional reaction rather than mechanical obstruction disease.The diagnosis mainly depends on the symptoms and sighs combined with gastrointestinal angiography or endoscopy.Most of the patients can be cured by conservative treatment.
3.Pharmacokinetics character of propofol during anhepatic period of pediatric liver transplantation
Yipin ZHU ; Liqun YANG ; Weifeng YU
Academic Journal of Second Military Medical University 2001;0(09):-
Objective: To investigate pharmacokinetics of propofol during anhepatic period of orthotopic liver transplantation (OLT) in children. Methods: In 5 children undergoing OLT, 2 mg/kg propofol was injected intravenously at the beginning of induction and anhepatic periods respectively. The plasma concentration of propofol was measured by reverse-phase high performance liquid chromatography(RP-HPLC), and the pharmacokinetics character of propofol between anhepatic and inducing periods were compared. Results: Propofol had wide distribution and high clearance, and its plasma concentration-time curves were fitted to a three-compartment open model. Conclusion: There is no difference of propofol metabolism between anhepatic and inducing periods, suggesting that there must be notable extra-hepatic metabolism when propofol used in children undergoing OLT.
4.Dissolvability of thundergodvine extract
Yongmei GUAN ; Xiaoxiao ZHANG ; Weifeng ZHU
Chinese Traditional Patent Medicine 1992;0(04):-
AIM:To investigate the dissolvability of thundergodvine extract(Tripterygium wilfordii) and triptolide in different dissolvent in transdermal drug delivery system and to study the relationship among dissolvability of extract,and its active component and mean diameters of suspension. METHODS:To determine dissolvability of extract,dissolvability of active component and mean diameters by precipitation method,dissolvability of active component method and mean diameters method. RESULTS:① solvents in sequence of dissolvability of extract,alcohol,isopropanol,ethyl,IPM,water,glycerol;② solvents in sequence of dissolvability of active component alcohol,isopropanol,ethyl,IPM,water,glycerol;③ mean diameters of suspension in sequence:IPM,ethyl,alcohol,isopropanol. CONCLUSION:① The change in dissolvability between extract and active component is identical;② The relationship between the changes in mean diameters and the dissolvent of active component is negative correlation on the whole.
5.Preliminary study on preparation of Yuanhuzhitong HBS Tablet
Zhifang HU ; Weifeng ZHU ; Huiling GUO ;
Chinese Traditional Patent Medicine 1992;0(08):-
Objective: To study the preparation and quality control methods of Yuanhu Zhitong HBS Tablet. Methods: the suitable excipients and formulation process of Yuanhu Zhitong HBS Tablet is sieved by means of testing quantity of tetrahydropalmatine through TLC UV. Results: the beginning floating time of HBS Tablet is 3min; relative dissolution of main component tetrahydropalmatine is 32% within 3hr, 86% within 9 hr. Conclusions: the study is found to be effective in the process of Yuanhu Zhitong HBS Tablet.
6.The clinical significance of early nutritional support in severe head-injured patients
Jianjun ZHANG ; Weifeng DONG ; Zhenyu ZHU ;
Parenteral & Enteral Nutrition 1997;0(03):-
Objectives:To evaluate the clinical significance of different early nutrition support in severe head injured patients. Methods:140 cases(GCS≤8) were randomly divided into 5 groups.From A to E,each one had 28 cases.The patients in group A received early parenteral nutrition(PN) and enteral nutritoin(EN) together;group B received early PN,and EN after 1 week later;group C received PN only for more than 2 weeks;group D received early EN only;group E received traditional delayed EN.The clinical observation and statistical comparison were taken. Results:Severe head injured patients could get nutrition from different ways at early stage.A and B groups had better outcomes,and the blood glucose and nutritional data were superior to those of D,E group( P
7.Correlation Study on Microstructure and Stability of Cream Based on Changes in Compound Proportion of Mixed Emulsifiers
Huifu YIN ; Sen WANG ; Rongmiao LI ; Weifeng ZHU
World Science and Technology-Modernization of Traditional Chinese Medicine 2014;(8):1688-1695
This article was aimed to study the correlation between microstructure and stability of cream contained Span and Tween as compound emulsifier by factor analysis. Techniques such as microscopic observation and rheolog-ical examination were used to perform the microstructure. And the thermal analysis and near-infrared stability ana-lyzer was carried out to quantify characterization of the physical stability of cream. The results showed that among the series of S60-T80 and S60-T60 creams based on compound emulsifier, cream conductivity increased and more and more spherical lamellar liquid crystalline structures appear on micrographs with increasing Span 60 fraction. The greatest viscoelastic was appeared when the mass ratio of Span and Tween was 2:2 and 1:3, respectively. From the thermogravimetric analysis, the increase of Span 60 fraction led to the weight loss of samples between 50℃-70℃ in-crease, but it decreased within 70℃-110℃. It was concluded that there was positive correlation between the intensi-ty of microstructure and the ability of resistance to structural failure when the experiment conditions were stable. It had negative correlation with the hydrophilic gel phase water distribution index.
8.Rat intestinal absorption trait of peimine and peiminine in Thunberg fritillary bulb extract.
Zhiyu GUAN ; Lihua ZHANG ; Lihua CHEN ; Weifeng ZHU ; Hongning LIU
Acta Pharmaceutica Sinica 2013;48(12):1836-43
To study the in situ intestinal absorption kinetics and compatibility influence of peimine and peiminine in rats, the absorption of peimine and peiminine in small intestine (duodenum, jejunum and ileum) and colon of rats was investigated using in situ single-pass perfusion method and the drug content was measured by HPLC-ELSD. Perfusion rate, pH, concentration of drug, gender and bile duct ligation can significantly affect the absorption of peimine and peiminine, the Ka, and Papp values in the condition of pH 6.8 and pH 7.4 had significant difference (P<0.01), as drug concentration irlcreased, the absorption parameters of peimine and peiminine decreased, Ka and Papp between low concentrations and middle concentrations was significant difference (P<0.01). Verapamil can not affect Ka and Papp of peimine and peiminine which are in the extract (P> 0.05). Bitter almonds and licorice can significantly reduce the absorption of peimine and peiminine with the usual dose (P<0.01), extracted separately and together had no significant difference on Ka and Papp (P> 0.05). Experimental results show that the absorption features of peimine and peiminine are basically the same, both of them could be absorbed at all segments of the intestine in rats and had no special absorption window, and with significant differences between male and female individuals. The absorption of peimine and peiminine complies with the active transport and facilitated diffusion in the general intestinal segments. Bitter almond and licorice can reduce the intestinal absorption rate ofpeimine and peiminine.
9.Relationship between NF-κB p65 activation and k-ras gene mutation in colorectal cancer
Ling CHEN ; Yunbin YE ; Yanping CHEN ; Gen LIN ; Weifeng ZHU
Cancer Research and Clinic 2013;25(8):513-515,526
Objective To investigate the corresponds between NF-κB p65 activation and k-ras mutations.Methods NF-κB p65 activation was analyzed by immunochemistry in 167 colorectal cancer specimens in which the k-ras mutation status was confirmed.Resluts Among 167 colorectal cancer specimens screened,59 (35.3 %) had k-ras mutations and 63 (37.7 %) had NF-κB p65 activation.k-ras mutations and NF-κB p65 nuclear expression were no significant difference in different sex,age,ECOG score,pathological types,degrees of pathological differentiation,TNM stage,and metastases on lymph nodes (P> 0.05).The positive nuclear expression rate of NF-κB p65 was 50.8 % (30/59) in specimens with k-ras mutations and 30.6 % (33/108) in specimens with wild type k-ras.There was obviously statistical difference between them (P =0.010).Conclusion NF-κB p65 activation in coloretal cancer was associated with k-ras mutations.
10.Short hairpin RNA-mediated silencing of APRIL gene inhibits proliferation and metastasis of human colon carcinoma SW480 cells in vitro
Weifeng DING ; Shaoqing JU ; Li ZHU ; Huimin WANG
Chinese Journal of Laboratory Medicine 2008;31(11):1291-1295
Objective To study the influence of short hairpin RNA-mediated inhibition of APRIL gene on proliferation,invasion and metastasis of human colon carcinoma SW480 ceils in vitro. Methods After treatment with shRNA, the expression level of APRIL protein in human colon carcinoma SW480 cells was detected by western blotting. And cell adhesion, cell migration and cell invasion of SW480 cells transfected with sh637 were analyzed respectively as compared with non-transfected SW480 cells and mocktransfectant. Results The expression of APRIL protein in SW480 transfected with sh637 were significantly lower than mock-plasmid groups and untransfected ones (F=42.15, P=0.00). Cell proliferation was markedly inhibited, compared with untransfected groups and negative control ones (F=24.76, P<0.05).And the average absorption of cell adhesion in transfected groups, mock-plasmid and non-transfected ones were 0.343, 0.409, 0.412, respectively. Cell adhesion decreased 39% compared with untransfected groups. Similarly, there was significant difference for cell migration (F=65.53, P<0.01) between transfected groups (The average ceil number in exposed area to migrate was 47.89±13.16) and nontransfected (98.78±23.26) as well as mock-plasmid ones (108.01±39.11). Then, in view of the average absorption of cell invasion between transfected groups(0.58±0.10) and non-transfected (0.94±0.23) as well as mock-plasmid ones(1.11±0.21), a prominently difference for cell invasion was also found between them (F=5.771, P<0.05). Conclusion The results suggest APRIL has a proliferation-inducing effect and probably be involved in cell invasion and cell metastasis of colon carcinoma and it could enhance capacity of invasion and metastasis of SW480 cells.