1.Bibliometric analysis of papers on pituitary adenoma supported by various funds
Weixi HUANG ; Renshu LOU ; Qin LOU
Journal of Endocrine Surgery 2009;3(4):257-260
Objective Funded papers on pituitary adenoma were bibliometrie analyzed to provide fund information on pituitary adenoma for the researchers.Methods Funded papers on pituitary adenoma from 1994 to 2007 were searched by strategy using pituitary adenoma and fund as key words in Chinese Medical Current Contents.Evaluation of papers on quantity of papers,fund type,level and proportion,the first atuhor,journal,distrier and institute by bibliometries method.Results In 1629 papers collected,there are 110 funded papers,which are comprised of 70 papers supported by National funds(49 supported by National Natural Science Foundation),40 funded by provincial funds.In these papers,there are 65 on basic research(8 on neuropeptide),45 on clinical research(9 on surgery) and 11 are dual funds supported.Of these papers,the first author,journal published on,work institute and distiet,in proper order to Zhang Xiang(7 papers),Chinese Journal of Neurosurgical Disease Research(13 papers),the fourth military university(18 papers) and Shanxi(16 papers).Conclusions The analysis summarizes 49 subjects of National Natural Science Foundation,11 subjects supported by dual funds,core authors and core journals of these papers,which are of great help for researchers' research works.
2.Introduction of Evidence-based Medicine to Obstetrics and Gynecology Teaching
Liwei ZHANG ; Qin LOU ; Xinhua ZHANG
Chinese Journal of Medical Education Research 2003;0(04):-
This article aims to study the present condition and disadvantages of current obstetrics and gynecology teaching and discuss the urgent needs and methods of evidence-based medicine (EBM) introduction to it.
3.Comparison of pantoprazole and omeprazole in the prevention of postoperative stress ulcer
Qin WANG ; Pengling WU ; Zhenyan LOU
Chinese Journal of Biochemical Pharmaceutics 2017;37(6):172-174
Objective To investigate the efficacy of pantoprazole and omeprazole in the prevention of postoperative stress ulcer.MethodsThe patients were divided into control group (pantoprazole) and observation group (omeprazole) according to the random number table method from December 2015 to December 2016 in 200 cases of abdominal surgery.The incidence and adverse effects of stress ulcer were measured and the cost and effect were calculated.ResultsIn the observation group, the incidence of stress ulcer was 4.0% (4/100) in the observation group compared with 5.0% (5/100) in the control group(χ2=0.11, P=0.73).Compared with the control group, Both groups were treated with liver and kidney function and blood routine examination, no obvious abnormalities, and no significant adverse reactions during treatment.ConclusionAbdominal surgery patients with pantoprazole and omeprazole can effectively prevent postoperative stress ulcers, the cost of no significant difference, no significant adverse reactions.
5.Expression of interleukin-17 in diabetic macroangiopathy and the mechanism of intervention with resveratrol
Xudan LOU ; Haidong WANG ; Shijin XIA ; Qin GU
Chinese Journal of Endocrinology and Metabolism 2013;29(8):700-704
Objective To study the expression of interleukin-17 (IL-17) in diabetic rat aorta and the effect of intervention with resveratrol,meanwhile,to explore the potential mechanisms of IL-17 induced diabetic vascular diseases and the protective role played by resveratrol in the epigenetic field.Methods The experiment was carried out in 4 groups:normal control group(NC),normal interventional group(NB),diabetic group(DM),and diabetic interventional group(DB),NB and DB groups were intervened with resveratrol.Immunohistochemistry was used to observe the histological localization of IL-17 and to measure the thickness of rat abdominal aorta.Western blotting,real-time PCR,and methylation-specific PCR were used respectively to compare the expression of IL-17 protein and mRNA,as well as DNA methylation in 4 groups.Results IL-17 mainly expressed in arterial intima of diabetic rats,the abdominal aorta in DM group was obviously thicker than that in NC and DB groups(P<0.05).IL-17 protein and mRNA expressions in DM group were significantly higher than NC group(P<0.05),and were reduced in NB and DB groups compared with NC and DM groups respectively.While DNA methylation levels of IL-17 in DM group were significantly lower than NC group(P<0.01),however,the levels in NB and DB groups were elevated accordingly as compared with corresponding groups.Conclusions The increased levels of IL-17 in aorta of diabetic rats suggests that IL-17 is involved in the process of inflammatory responses to diabetic macrovascular diseases,while resveratrol could inhibit the expression,it may play a role in protecting aorta,and the regulation of IL-17 gene promoter DNA methylation levels may be the potential mechanism underlying these two phenomena.
6.Effect of polydatin on endothelial function in aorta vascular strips of healthy rabbits treated with ADMA
Jian QIN ; Yunzhen CHEN ; Qixin ZHOU ; Ruofei SHI ; Qingsong JIANG ; Qin LOU
Chinese Traditional and Herbal Drugs 1994;0(05):-
ObjectTo study the effect of polydatin (PD) and asymmetric dimethylarginine (ADMA) on the endothelial function in aorta vascular strips of healthy rabbits and the interaction between PD and ADMA. MethodsDose-response curves of phenylephrine (PE) on the aortic strips with or without ADMA and/or PD. E max and Kd from PE were obtained and compared. ResultsNormal aortic strips could not respond to ADMA. Pretreatment with either PD or ADMA had no effect on the contractive response of aortic strips to PE. But PD could significantly weaken the contractive response of aortic strips pretreated with ADMA caused by PE in a dose-dependent manner, increase Kd and decrease E max of PE. ConclusionEither ADMA or PD alone does not influence the normal aortic strip contractive functions, the PE affinity to ?-receptor, and E max. But PD could noncompetitively antagonize the contractive reaction of aortic strips to PE in the presence of ADMA.
7.Establishment of BCG combined LPS-induced hepatocyte immunotoxicity model to assess liver protective effects
Qin-Zhu ZHENG ; Li-Ming WANG ; Yi-Jia LOU
Journal of Zhejiang University. Medical sciences 2002;31(6):419-423
OBJECTIVE: To establish a hepatocyte immunotoxicity model for screening of liver protective medications. METHODS: Cytotoxicity was induced by coincubating BCG-pretreated rat hepatocytes in vivo and with 10 mg/L LPS in vitro. Biphenyldimethylesterate (DDB), malotilate(MLT), silybin(SB) and glycyrrhizin (GRZ) were coincubated along with LPS to prevent the hepatocyte injury and verify the applicability and reliability of the model. AST, LDH and nitric oxide (NO) were measured in both the serum and supernatant. The liver and spleen index were calculated and the liver histopathologic changes were examined microscopically. RESULTS: Supernatant AST, LDH and NO in the BCG combined LPS group were increased in comparison with the control group (P<0.01). This increase was attenuated by the addition of DDB, MLT, SB and GRZ (P<0.05). The serum AST, NO and liver and spleen index were also increased significantly compared with the control group (P<0.01). Microscopic exam revealed serious histopathologic changes in the BCG combined LPS group. Hepatoxicity with associated liver enzyme elevation but histopathologic changes were attenuated by DDB, MLT, SB and GRZ. CONCLUSION: BCG combined LPS-induced hepatocyte immunotoxicity in an in vitro rat model may be a useful technique to assess the effectiveness of liver protective medications.
8.Effects of different concentrations of gubishu containing serum on the proliferation of rabbit articular chondrocytes in vitro culture.
Meng QIN ; He-ming WANG ; Yu-qian LOU
China Journal of Orthopaedics and Traumatology 2011;24(10):841-844
OBJECTIVETo investigate the effects of different concentrations of Gubishu containing serum on the proliferation of rabbit articular chondrocytes cultured in vitro.
METHODSArticular chondrocytes were obtained from the cartilage of 1-month rabbit and cultured in vitro. They were randomly divided into 8 groups,blank and Gubishu groups in different concentrations (5%, 10%,15%, 20%), MTT assay method was adopted to observe the influence of Gubishu containing serum with different concentrations to the proliferation of chondrocytes after incubated 1, 3, 5, 7 and 9 days.
RESULTSThe proliferation of chondrocytes was dependent on the concentration in Gubishu groups. At same time point,there was significant value between every groups, 20% concentration was greatest (P<0.05); There was significant differences between 5%, 10% and 20% concentration of the blank groups at same time point (P<0.05), and was not between 15% and 20% concentration at the 1, 3, 5 and 7 days (P>0.05), 20% concentration of the blank group was greatest. 20% concentrations of Gubishu containing serum was significantly greater than 20% concentrations of blank group at the 1, 3, 5 and 7 days (P<0.05).
CONCLUSION20% concentrations of Gubishu containing serum can significantly increase the proliferation of chondrocytes, and bring the logarithmic growth period forward to the 3 day.
Animals ; Cartilage, Articular ; cytology ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Chondrocytes ; drug effects ; physiology ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; pharmacology ; Female ; Male ; Rabbits ; Serum
9.Hypergammaglobulinemia: a sentinel detecting autoimmune pancreatitis
Wenchuan WU ; Xiuzhong YAO ; Dayong JIN ; Dansong WANG ; Wenhui LOU ; Xinyu QIN
Chinese Journal of General Surgery 2013;(1):20-23
Objective To determine the clinical value of hypergammaglobulinemia as a sentinel for autoimmune pancreatitis and avoid unnecessary pancreas resection.Methods All 14 patients with autoimmune pancreatitis or related pancreatic diseases underwent routine examinations,including liver function,CA199 and imaging.Measurement of serum IgG or IgG4 was performed for patients with clinically suspected or pathologically proved autoimmune pancreatitis.Clinical features were retrospectively compared between the AIP and non-AIP patients using x2 statistics with Yates correction or Fisher exact test.Results Ten cases were finally confirmed as autoimmune pancreatitis.All patients with autoimmune pancreatitis had elevated levels of serum γ-globulins,while only one case without autoimmune pancreatitis had elevated levels of serum γ-globulins.It was proved by subsequent antibody tests that serum IgG/IgG4 and γ-globulins were simultaneously increased.Conclusions Hypergammaglobulinemia can be used as a preoperative sentinel indicator for differentiating autoimmune pancreatitis from pancreatic malignancies and avoiding unnecessary pancreas operation.
10.The immunogenicity of the new MUC1 DNA vaccine for pancreatic cancer
Wenchuan WU ; Dayong JIN ; Wenhui LOU ; Yefei RONG ; Dansong WANG ; Xinyu QIN
Chinese Journal of Hepatobiliary Surgery 2013;(3):212-214
Objective The development of cancer vaccines deserves experimentation,specifically the immunogenicity of the new MUC1 DNA vaccine for pancreatic cancer.Methods Three strategies were combined to optimize the new MUC1 DNA vaccine.The female C57BL/6 mice were immunized,through tibial muscle injection,with 100 μg of plasmid DNA of the recombinant plasmids (pIRES2-EGFP-3VNTR group,pIRES2-EGFP-3VNTR-C1-144 group,pIRES2-EGFP 3VNTR-mIL-18 group,pIRES2-EGFP-3VNTR-C1-144-mIL-18 group,n=5) for a total volume of 100 μl.Mice inoculated with the empty vector pIRES2-EGFP (EV group,n=5) and normal saline (NS group,n=5) were used as vector and blank controls,respectively.All the mice were immunized again every two weeks.Two weeks after the third immunization,all the mice were euthanized and spleen cells were separated for CTL cytotoxic assay.Results The specific cytolysis percentages of the four groups (pIRES2-EG-FP-3VNTR,pIRES2-EGFP-3 VNTR-C1-144,pIRES2-EGFP-3VNTR-mIL-18,pIRES2-EGFP 3VNTR-C1-144-mIL-18) expressing VNTR were higher than the EV and NS group with the effector/target cells ratio (E/T) from 80:1 to 20:1 (P<0.05).Therefore,it showed a difference among the four groups.After the primary immunization,the OD450 of the serum antibody level specific to MUC1 began to increase in the four groups which contained the gene of VNTR3 (P<0.05).This suggests that the recombinant plasmids could induce a specific antibody response to MUC1,and showed no remarkable difference among the four groups.IFN-γ serum cytokine among the four groups were higher than that of the EV and NS groups (P<0.05).There was a significant difference of OD450 between the groups containing mIL-18 pIRES2-EGFP-3VNTR-mIL-18,pIRES2-EGFP-3VNTR-C1-144-mIL-18) and those not (pIRES2-EGFP-3VNTR,pIRES2-EGFP-3VNTR-C1-144,)(P<0.05).Conclusions In conclusion,all of the four recombinant plasmids could induce MUC1 specific CTL and antibodies responses,and C1-144 and IL-18 could enhance the immunogenicity of plasmids.