1.Oncogenic mechanism and biological effect of Evi-1 gene
Journal of International Oncology 2013;(3):170-173
Ecotropic viral integration site-1 (Evi-1) gene is first identified as a binding site for retrovirus in murine myeloid leukemia.The human homologue with the murine in leukemia oncogene Evi-1 is about 91% of nuclear sequence and 94% of amino acid.Evi-1 gene is high expressed in myeloid malignancies and other tumors.The main tumorigenic mechanisms of Evi-1 gene include inhibiting TGF-β signal path by depressing Smad3,adjusting cell cycle,promoting angiogenesis,inhibiting JNK.activating AP-1,and so on.
2.The deficit of verbal working memory in dyslexia children
Wei ZHANG ; Hongyan SONG ; Xiangping LIU
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(5):448-450
Objective To explore the deficit features of verbal working memory of dyslexia children by comparing with normal children. Methods Seventeen normal children and fifteen dyslexia children finished the classic verbal n-back task which involved three memory updating difficulty levels. Results Dyslexia children ((81.7±7.0)%,(70.8±12.0)%,(60.0±7.0)%)performed worse than NC ((88. 6 ±6. 0)% , (83. 5 ± 7.0)% ,(75.6 ±9.0)%)in all memory updating levels(n = 0,1 ,2) (P<0.01). In the performances related to memory updating operating,when the difficulty of the updating rised dyslexia children(25. 9 ± 12. 0)% revealed greater decline than normal children(14.2 ± 12.0)% (P<0.01). Conclusion Dyslexia children demonstrate the deficit in the basic level of working memory, which was showed as the bad performance of n-back task in updating level zero, and also they had problems in memory updating,which was showed as the greater updating effect. Memory updating was regarded as the advanced procession of verbal working memory.
3.TRANSCAROTID ARTERY CHEMOTHERAPY FOR GLIOMAS: AN ANALYSIS OF 212 CASES
Xiangping FU ; Anmin LI ; Zhiwen ZHANG
Medical Journal of Chinese People's Liberation Army 2001;0(10):-
Objectives To evaluate the effectiveness of transcarotid artery chemotherapy for gliomas after surgery, and selection of drug, avenue of administration, and optional time for the therapy. Methods Beginning from 4 to 30 days after operation, Nimustine (ACNU, Japan) 2.5mg/kg was injected per carotid artery, once every week for three times as one course. A second course of treatment was given after an interval of 4 to 6 weeks. Results With the above regime, the effect was marked in 39 cases (18.8%), fairly effective in 44 cases (20.8%), only slightly effective in 59 cases (27.8%), no effect in 61 cases (28.8%), and failure in 5 cases (2.4%), the mean survival time was nearly 100 weeks. Conclusion Transcarotid artery chemotherapy for gliomas is helpful in prolonging survival period, with little side effects, easy to carry out, less expensive, and better accepted by the patients.
4.Protective effect of cardiomyopeptidin on cultured myocardial cells injured by anoxia-reoxygenation
Huayin WAN ; Xiangping KONG ; Lianping YANG ; Rubing LI ; Yijun ZHANG
Chinese Journal of Pathophysiology 2001;17(6):481-484
AIM: To study the protective effect of cardiomyopeptidin (CMP) attributed to polypeptide on cultured myocardial cells injured by anoxia-reoxygenation.METHODS: The anoxia-reoxygenation injury model were developed, anoxia for 60 min and reoxygenation for 30 min. The effect of CMP on myocardial ultrastructure was observed. [Ca2+]i was estimated with adherent cell analysis and sorting 570(ACAS 570) laser cytometer and measured with fluorescent dye Fura-2-AM, the lipid fluidity of cellular membrane was determined by fluorescence polarization technique. RESULTS: CMP could obviously improve the ultrastructure of myocardial cells and dose-dependently decrease [Ca2+]i and increase the lipid fluidity of cellular membrane, CMP also could markedly reduce the chromaticity value of pseudo-colour graphic model of Ca2+. CONCLUSION: Cardiomyopeptidin has an obvious protective effect on cultured myocardial cells injured by anoxia-reoxygenation, this may be related to its effect of decreasing [Ca2+]i and increasing lipid fluidity of cellular membrane.
5.Hepatectomy for hepatocellular carcinoma associated with cirrhosis
Xiangping CHEN ; Zhenghua TANG ; Yuhua ZHANG ; Meiying YU ;
Chinese Journal of General Surgery 1993;0(02):-
Objective To define the factors that influence the safety of hepatectomy for hepatocellular carcinoma (HCC) associated with cirrhosis. Methods Based on the patients treated before and after February 1997,229 cases of HCC associated with cirrhosis were divided into two groups, Group A and Group B, respectively. The patients′ general condition, operative procedure, morbidity and mortality rates were compared between the two groups. The factors that influenced surgical morbidity were analysed. Results In group B, patients′ average age was higher (P
6.Expression and significance of Toll-like receptors in fungal rhinosinusitis
Guohua ZHANG ; Xiangping LI ; Xiong LIU ; Huanan LUO ;
Chinese Archives of Otolaryngology-Head and Neck Surgery 2006;0(12):-
OBJECTIVE To study the expression of Toll-like recptor2(TLR2)and Toll-like receptor4(TLR4) in the fungal rhinosinusitis tissues,and to explore the role of TLR2 and TLR4 in the pathogenesis of fungal rhinosinusitis.METHODS The mRNA and protein expression of TLR2 and TLR4 were detected by reverse transcription polymerase chain reaction(RT- PCR)and immunohistochemistry(IHC)in 24 fungal rhinosinusitis tissues,24 chronic rhinosinusitis tissues,and 15 normal mucosa of inferior turbinate. RESULTS The mRNA expression of TLR2 and TLR4 in fungal rhinosinusitis tissues(0.208?0.063,0.159?0.059)was significantly decreased compared with that in chronic rhinosinusitis(0.505?0.097,0.406?0.102)and normal inferior turbinate tissues(0.327?0.047;0.232?0.088).The protein expression rates of TLR2 and TLR4 in fungal rhinosinusitis tissues (3/24,4/24)were significantly lower than that in chronic rhinosinusitis(20/24,21/24)and normal inferior turbinate tissues(7/15,8/15)by IHC study. CONCLUSION The lower expression of TLR2 and TLR4 in fungal rhinosinusitis tissues indicates that the declined role of TLR-mediated innate immune responses in the defensive reaction of anti-fungal in sinonasal mucosa,which may be one of the reasons for dropped clearance rate and increased susceptibility to fungi.
7.STUDY ON EFFECT OF HGF ON SERUM ESTRAD1OL LEVEL OF THE RATS WITH LIVER INJURY
Guangming CHEN ; Fuqiang YANG ; Yijun ZHANG ; Xiangping KONG ; Guochi ZHENG
Medical Journal of Chinese People's Liberation Army 1983;0(02):-
In our laboratory, injection of HGF, prepared by the modified Labrecque's method, was used for the treatment of experimental hepatic injury in rats. It was found that the serum estradiol level was significantly higher in the group of HGF treatment than that in the control group (P
8.Preparation of Nifedipine Sustained-Release Pellet Tablets and Study of Its Release Behavior in vitro
Yi ZHANG ; Zhongwen YUAN ; Shixia GUAN ; Qingguo LI ; Xiangping ZHOU
Herald of Medicine 2014;(6):790-793
Objective To prepare nifedipine( NF)sustained-release pellet tablets,and study of its release behavior in vitro. Methods Soluplus was selected as a carrier to prepare solid dispersion of NF by hot melt extrusion technique( HME), and the ratio of the drug to carrier was 1:1. The samples were validated as the solid dispersion by differential scanning calorimetry(DSC). Extrusion-spheronization technique was introduced to prepare NF pellets and EudragitRS 30D was used as the coating material. The NF sustained-release tablets were prepared by direct compression of the coated pellets and suitable excipients. Results The release data in vitro proved that the drug release from the tablets was steady and complete over 24 hours. Conclusion The release of NF from sustained-release tablets is slow and steady. The method is easy to operate. The in vitro drug release pattern follows first-order kinetics.
9.Safety and tolerability of ERCP for elderly patients in diagnose and therapy
Paiqi ZHANG ; Xiangping WANG ; Jingjie WANG ; Changtai XU ; Xuegang GUO
Journal of Regional Anatomy and Operative Surgery 2014;(5):508-510
Objective To analyze the safety and tolerability of endoscopic retrograde cholangiopancreatography ( ERCP) for elderly pa-tients in diagnose and therapy. Methods From Jan. 2010 to Dec. 2013, 1 560 patients were collected in our hospital for diagnosis and treatment, 1 116 cases were 60~69 years old, and the other 444 cases were over 70 years old. Retrospective data including clinical and bio-chemical characteristics, ERCP diagnosis and complications were analyzed. Results Using Logistic regression, the potential factors of com-plex multivariable were analyzed, and there was no statistical difference between the two groups (P=0. 039). The successful intubation, in-tubation difficulties and failed intubation in the examination and the treatment were of significantly difference between the two groups (P<0. 05). There were no significant difference between the two groups in common bile duct stones of bile duct obstruction and clinical di-agnosis (P>0. 05), but the ERCP diagnosis, postoperative complications and complications of acute pancreatitis were of certain difference (P<0. 05). Patients over 70 years old were of better tolerance, but their bile duct stones was about two times than that in patients of 60~69 years old (P=0. 004). Conclusion The results show that ERCP for elderly patients in diagnose and therapy is safe and well tolerated, and there were relatively less complications in patients over 70 years old.
10.Protective effect of cardiomyopeptidin on cultured myocardial cells injured by anoxia-reoxygenation
Huayin WAN ; Xiangping KONG ; Lianping YANG ; Rubing LI ; Yijun ZHANG
Chinese Journal of Pathophysiology 1989;0(06):-
AIM: To study the protective effect of cardiomyopeptidin (CMP) attributed to polypeptide on cultured myocardial cells injured by anoxia-reoxygenation.METHODS: The anoxia-reoxygenation injury model were developed, anoxia for 60 min and reoxygenation for 30 min. The effect of CMP on myocardial ultrastructure was observed. [Ca 2+ ] i was estimated with adherent cell analysis and sorting 570(ACAS 570) laser cytometer and measured with fluorescent dye Fura-2-AM, the lipid fluidity of cellular membrane was determined by fluorescence polarization technique. RESULTS: CMP could obviously improve the ultrastructure of myocardial cells and dose-dependently decrease [Ca 2+ ] i and increase the lipid fluidity of cellular membrane, CMP also could markedly reduce the chromaticity value of pseudo-colour graphic model of Ca 2+ . CONCLUSION: Cardiomyopeptidin has an obvious protective effect on cultured myocardial cells injured by anoxia-reoxygenation, this may be related to its effect of decreasing [Ca 2+ ] i and increasing lipid fluidity of cellular membrane. [