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.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.
3.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.
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.Analysis of cause and treatment of acute intestinal obstruction in different age groups in metropolitan
Chinese Journal of Gastrointestinal Surgery 2001;4(1):37-39
Objective To analyze the cause and therapeutic effect of acute intestinal obstruction of different age groups in metropolitan. Method The data of 165 cases of acute intestinal obstruction admitted in our department from January 1995 to December 1999 were analyzed retrospectively. Patients over 60 belonged to aged group and the ones below 60 belonged to adult group. Results Among 165 cases, 98 cases belonged to the aged group while 67 belonged to the adult group. There were 68 cases of colorectal cancer, 45 cases of adhesion, 13 cases of cancer metastasis, 10 cases of volvulus of sigmoid colon, 7 cases of oblique hernia and 22 cases of other causes. Cancer was the main cause in the aged group (44.9%, 44/98) and adult group (55.2%, 37/67) (P>0.05) . Adhesion accounted for 30. 6% (30/98) and 22.4% (15/67) in these two groups. 79.5% of the patients with colorectal cancer in the aged group and 94.6% in the adult group recieved operation(P<0.05) . The resection rate of colorectal cancer was almost the same between the two groups. The mortality was 7.1% (7/98) in the aged group and 2.9% (2/67) in the adult group respectively(P<0.05) . Conclusions Tumor is the main cause of acute intestinal obstruction in metropolitan followed by adhesion. The mortality is significantly high in aged group.
7.Analysis of cause and treatment of acute intestinal obstruction in different age groups in metropolitan
Chinese Journal of Gastrointestinal Surgery 2001;4(1):37-39
Objective To analyze the cause and therapeutic effect of acute intestinal obstruction of different age groups in metropolitan. Method The data of 165 cases of acute intestinal obstruction admitted in our department from January 1995 to December 1999 were analyzed retrospectively. Patients over 60 belonged to aged group and the ones below 60 belonged to adult group. Results Among 165 cases, 98 cases belonged to the aged group while 67 belonged to the adult group. There were 68 cases of colorectal cancer, 45 cases of adhesion, 13 cases of cancer metastasis, 10 cases of volvulus of sigmoid colon, 7 cases of oblique hernia and 22 cases of other causes. Cancer was the main cause in the aged group (44.9%, 44/98) and adult group (55.2%, 37/67) (P>0.05) . Adhesion accounted for 30. 6% (30/98) and 22.4% (15/67) in these two groups. 79.5% of the patients with colorectal cancer in the aged group and 94.6% in the adult group recieved operation(P<0.05) . The resection rate of colorectal cancer was almost the same between the two groups. The mortality was 7.1% (7/98) in the aged group and 2.9% (2/67) in the adult group respectively(P<0.05) . Conclusions Tumor is the main cause of acute intestinal obstruction in metropolitan followed by adhesion. The mortality is significantly high in aged group.
8.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.
9.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.
10.Prokaryotic expression and characterization of receptor binding domain protein of the Middle East respiratory syndrome coronavirus
Shuai LU ; Jiaming LAN ; Yingzhu CHEN ; Jianfang ZHOU ; Kun QIN ; Yongliang LOU ; Wenjie TAN
Chinese Journal of Microbiology and Immunology 2016;36(2):98-102
Objective To express the receptor binding domain (RBD) protein of the Middle East respiratory syndrome coronavirus (MERS-CoV) and to characterize the antigenicity of the purified recombi-nant protein. Methods The codon-optimized gene encoding the RBD protein of MERS-CoV was synthesized and then cloned into the pET30a ( +) vector to construct the recombinant expression plasmid. The trans-formed E. coli BL21 (DE3) strains carrying expression plasmid were induced by IPTG under different condi-tions. The expressed products were purified by using nickel affinity chromatography and further analyzed by SDS-PAGE and Western blot assay. Indirect ELISA was performed to analyze the antigenicity and specificity of RBD proteins expressed in prokaryotic expression systems in human serological test. Results The recom-binant RBD proteins were mainly expressed as conclusion body in an optimal induction condition of 37℃ and 0. 5 mmol/ L IPTG for 4 h. The high purified recombinant RBD proteins were obtained through denaturation and renaturation with a relative molecular mass of about 29×103 . Results of the Western blot assay showed that the recombinant RBD proteins could have specific reaction with the serum samples collected form mice with MERS-CoV infection. Indirect ELISA revealed that the RBD proteins expressed in the prokaryotic ex-pression system showed better sensitivity and specificity in the detection of antibodies against MERS-CoV in human serum samples. Conclusion This study reported the prokaryotic expression and purification of RBD protein of MERS-CoV for the first time, which might pave the way for further investigation on immunological detection of MERS-CoV and development of vaccines against MERS-CoV infection.