1.Investigate the application of animal disease models in non-clinical safety evaluation
Chinese Pharmacological Bulletin 2014;(10):1462-1463,1464
The current drug non-clinical safety evalua-tion has been highly systematized and standardized, but the standard toxicology model is still some inade-quacies, need to consider other animal models of safety evaluation. This paper will expound the need of animal disease models using in safety evaluation from the as-pect of scientific theories, data requirements and the need of clinical. Then recognizing on the perspective of drug regulatory agencies to explore the feasibility of u-sing animal disease models for safety evaluation and the deficiencies, in order to predict as accurately as possi-ble of the adverse drug reactions in clinical, applied to reduce the risk of clinical patients ( patients benefit ) , and reduce the risk of drug development failures ( pharmaceutical companies benefit ) . All in all we should attach great importance to the applications of animal disease models in non-clinical safety evalua-tion.
2.IMPACT OF BOVINE LACTOFERRICIN ON BIOLOGICAL FEATURES IN JURKAT T LEUKEMIA CELLS AND HFL-I CELLS
Tienan ZHANG ; Wei YANG ; Ning LIU
Acta Nutrimenta Sinica 2004;0(05):-
Objective To study the morphology and the effect of bovine lactoferricin (LfcinB) for Jurkat T leukemia cells and HFL-I cell and further validate and analyze the signal transduction passage way of LfcinB-induced apoptosis. Method The Jurkat T leukemia cells and fibroblasts stained with Hoechst 33258 after in vitro treatment with LfcinB were observed through fluorescence microscope, compared with positive and negative control groups to analyze the difference between the effect of LfcinB on Jurkat T leukemia cells and HFL-I cell with gel electrophoresis analysis of DNA fragmentation. Early apoptosis and mitochondrial membrane potential of Jurkat T leukemia cells were analyzed by flow cytometry, and the changes of caspase-3, caspase-8, caspase-9 and cytochrome C in endochylema of Jurkat T leukemia cells after exposed to LfcinB during 4, 6 and 8 h were detected by Western blotting. Results DNA Ladder was shown by gel electrophoresis analysis of DNA fragmentation in Jurkat T leukemia cells following treatment with LfcinB, which was not found in HFL-I cell. Through fluorescence microscope, we found that nucleus of LfcinB-exposed Jurkat T leukemia cells stained with Hoechst 3325 became condense, but the nucleus of HFL-I cell was not changed. The results of flow cytometry analysis indicated that apoptosis rates of Jurkat T leukemia cells exposed to LfcinB for 2, 4 h were 11.5% and 17.8% respectively, with decline of mitochondria membrane potential. Immunoblot analysis showed that LfcinB could increase the content of cytochrome C, with the activated caspase-3 and caspase-9 increase gradually in endochylema of Jurkat T leukemia cells, however there was no effect of LfcinB on caspase-8. Conclusion LfcinB induced apoptosis of Jurkat T lenkemia cells, but not affected fibroblasts. After Jurkat T leukemia cells, contacted with LfcinB for more than 2 h, the contents of caspase-3, caspase-9 and cytochrome C in the cells were cumulatively increasing, which further validated that LfcinB induced Jurkat apoptosis by intra-cellular signal pathway depending on caspase family.
3.Advance in The Geminin:A Multifunctional Protein
Ning YANG ; Huitu LIU ; Wei ZHANG
Progress in Biochemistry and Biophysics 2006;0(09):-
Geminin is a multifunctional protein which localizes in nucleus,it has complicated structural and functional domains.Geminin plays very important roles in cell proliferation,embryonic development,tumorigenesis and so on.Geminin affects cell proliferation through influence on the important events in cell cycle phases.There are many mechanisms by which Geminin can control DNA replication,inhibit centrosome over-duplication,promote G2/M phase progression,maintain proper cytokinesis.At different development stages,Geminin acts as an inhibitor or inducer in regulating embryonic development,especially in nervous system formation.Geminin also plays a regulative role in eye development and embryonic development through the interactions with homeobox genes or proteins Six3 and Hox,Geminin functions as a coordinator of cell proliferative and differentiative control.Recently,Geminin was found to have relationship with cancer,the study on the function of Geminin in cancer has been a meaningful aspect.Geminin can act as a marker to evaluate progression and prognosis in cancer.It may be a novel molecular target in therapy of cancer.The activity of Geminin is regulated by transcription level and post-transcription level,the post-transcriptional regulation of Geminin protein may take the main position.
4.Long-Term Follow Up of Budd-Chiari Syndrome Treated By Transluminal Angioplasty
Ning YANG ; Wei LIU ; Chuan ZHANG ;
Journal of Interventional Radiology 1992;0(01):-
The goal of radiologic intervention in patients with membranous or segmental ob struction of inferior vena cava(Budd-Chiari Syndrome)is to relieve the major venous obstruction, control portal hypertension and prevent further hepatocellular damage until collateral hepatic venous outflow channels can develop.Percutaneous balloon angioplasty(PTA)was used to treat 15 patients with this syndrome who were followed up for an average of 30.57?13.57 months(range,8~48 months).In occlusion,PTA can be considered a safe and effective treatment at least patency of one hepatic vein.The therapy is not definitive,multiple treatment are required for the long-term care of the ptients who all hepatic vein are obliterated.
5.Early Intervention to the Shoulder Pain for Patients with Hemiplegia after Stroke
Wei YANG ; Ning XIN ; Wenhong ZHAO
Chinese Journal of Rehabilitation Theory and Practice 2007;13(1):68-69
ObjectiveTo investigate the effect of early intervention on shoulder pain in patients with hemiplegia after stroke. MethodsStroke patients were treated with bedside physical therapy on the shoulder 7 d after onset. They were assessed with short-form McGill pain questionnaire and Fugl-Meyer assessment of upper extremity before and 40 d after treatment. ResultsThe score of MPQ in the treatment group was significantly lower than that in the control group, while the score of FMA was significantly higher(P<0.01). ConclusionEarly intervention can reduce the pain and improve the function of the shoulder in patients with shoulder pain after stroke.
6.Continuous curvilinear capsulorhexis and capsular block syndrome
Na CAI ; Wei LU ; Xuesong MOU ; Xueqin NING ; Na YANG
Recent Advances in Ophthalmology 2001;21(3):195-196
Objective To analysis the relation of the diameter of continuous curvilinear capsulorhexis and other factors with the capsular block syndrome.Methods We not only analyzed the etiology and clinical characteristic of six cases in intraoperative,early postoperative and lately postoperative,but also discussed the method of treatment.Results (1)When the diameter of CCC was smaller than the one of IOL's optic , the CBS easily happened; (2)When the hoops of the hydroview IOL had a smaller anterior angle and larger optic, the CBS easily happened; (3)When the viscoelestic material and cortex were stayed in capsular or anterior chamber, the CBS easily happened.Conclusion (1)Generaly speaking the size of the CCC should right on the edge of the IOL's optic part; (2)To hydroview IOL, we should choose the one which had a larger anterior angle and a smaller optic; (3)Viscoelastic material which should be cleaned and there was no the rest cortex stayed in the capsular.
7.Expressions of glial fibrillary acidic protein in the prefrontal cortex, hippocampus, and amygdala in post-stroke depression in rats
Yun LI ; Wei WANG ; Shu LI ; Yangchao LI ; Ning YANG
International Journal of Cerebrovascular Diseases 2016;24(1):58-62
Objective To investigate the expressions of glial fibrilary acidic protein (GFAP) in the prefrontal cortex, hippocampus and amygdala in post-stroke depression (PSD) in rats. Methods Healthy adult SD rats w ere randomly divided into a normal group, a depression group, a stroke group, and a PSD group ( n=5 in each group). A model of focal cerebral ischemia w as induced by the intraluminal suture method in the stroke group;a rat chronic stress depression model was induced by using chronic unpredicted mild stress (CUMS) combined w ith single housing in the depression group;a model of focal cerebral ischemia w as induced by the intraluminal suture method in the PSD group. A rat PSD model w as induced by CUMS and single housing at 1 week after operation. The sucrose preference test (SPT) was performed in each group at day 1, 8, 15, and 29 after the first CUMS, and the open-field test ( OFT ) w as used to evaluate the depressive behaviors. Immunofluorescence staining was used to detect the expression of GFAP in the prefrontal cortex, and hippocampus and amygdala at day 29. Results At day 29 after CUMS, the sucrose solution consumption in SPT and the scores of horizontaland vertical movement in OFT in the depression group and PSD group w ere decreased significantly compared w ith the normal group and the stroke group (al P<0.05);the numbers of GFAP immunopositive cel s in the prefrontal cortex, hippocampus, and amygdala in the PSD group w ere significantly less than those in the normal group, depression group and stroke group (al P<0.05), and there w ere no significant differences among the normal group, depression group and stroke group (al P>0.05). Conclusion The decreased expression of GFAP in the prefrontal cortex, hippocampus, and amygdale may play a certain role in the process of PSD.
8.Transcatheter arterial chemoperfusion or chemoembolizaiton for treatment of liver metastasis from malignant insulinoma
Xiaoguang LI ; Zhengyu JIN ; Ning YANG ; Wei LIU ; Jie PAN
Journal of Interventional Radiology 2006;0(11):-
Objective To discuss the clinical efficiency of transcatheter arterial chemoperfusion or chemoembolization (TACP / TACE) for treatment of liver metastasis from malignant insulinoma. Methods 9 cases of liver metastasis from malignant insulinoma were performed with TACP protocol of 5-fluorouracil,epirubicin,mitomycin C and interleukin-2,including 2 patients also received TACE with total 2-8 courses of treatment. Results All patients finished the interventional therapy uneventfully with no serious complication. After treatment,clinical symptoms disappeared or improved significantly,with obvious response in 2 cases and partial response in 7 cases. Efficacy in imaging revealed obvious response in 1 case,partial response in 7 and no response in 1 case. Conclusion TACP / TACE for treatment of liver metastasis from malignant insulinoma is safe and effective.
9.The study progress of chemistry and pharmacology of termite nests
Jia LIU ; Wei ZHANG ; Ning ZHANG ; Haijun YANG
International Journal of Traditional Chinese Medicine 2015;(3):286-288
Termite nests is rarely seen in the clinical applications of traditional Chinese medicine, generally used for the treatment of the bone injuries and internal medical diseases. According to the recent research on termite nests, this article makes a summarize of its distribution, types, pharmacognosy characteristics, chemical composition, pharmacological effects and its application research aspects, so as to provide reference for the further development and utilization of termite nests.
10.Clinical study of patients with nasal NK/T cell lymphoma associated hemophagocytic syndrome
Feng NING ; Jinxwen WANG ; Liqiang WEI ; Yun QIAN ; Lei YANG
Journal of Leukemia & Lymphoma 2012;21(1):38-41
Objective To study clinical features, treatment and prognosis of nasal NK/T cell lymphoma associated Hemophagocytic Syndrome (HPS).Methods Retrospectively analysis method was used to analyze the clinical data of 3 patients with nasal NK/T cell lymphoma associated HPS. Results 3 patients with nasal NK/T cell lymphoma fulfilled the criteria of HPS. All patients had adverse prognostic factors of lymphoma.1 patient developed HPS as the main primary manifestations of underlying lymphoma,the other 2 patients developed HPS during lymphoma progression. In three cases, bone marrow was infiltrated with lymphoma cells.When HPS occurred,the disease progressed rapidly.The most obvious clinical features were fever,pancytopenia,hypofibrinogenemia,hyperferritinemia,and hemophagocytosis in bone marrow. After being treated according to the HLH-2004 combined with chemotherapy, all patients showed a clinical response,but with the progression of lymphoma,HPS quickly relapsed,and all patients died of severe hepatic dysfunction,coagulopathy,or DIC.Conclusion Nasal NK/T lymphoma associated HPS is an invariably fatal disease with poor prognosis,typically occurring at advanced stage or the terminal phase of the disease.HLH-2004 based protocol in combination with chemotherapy is helpful for nasal NK/T cell lymphoma associated HPS,which may delay disease progression and provid opportunities for the treatment of primary disease.