1.Functional assessment of islet α-cell and β-cell in patients with gestational diabetes mellitus
Chinese Journal of Endocrinology and Metabolism 2012;28(10):835-838
Based on the result of oral 75 g glucose tolerance test (OGTT),55 pregnant women during the second trimester (gestational age 24-28 weeks) were selected and divided into gestational diabetes mellitus (GDM)group (n =25) and normal glucose tolerance (NGT) group (n =30).Women with GDM were older than those in NGT group.Blood glucose and insulin levels during the OGTT,incremental area under the glucose curve (AUCGLU) and insulin curve (AUCINs) during the OGTT,and basic insulin secretion index (HOMA-β) in the GDM group were higher compared with those in NGT group (P<0.05).However,in GDM group,insulin sensitivity index (ISI-Matsuda),dynamic insulin secretion index(Stumvoll 1-and 2-phase insulin secretion indices),and insulin secretion-sensitivity index (ISSI)were lowered (all P< 0.05),so was AUCINS/AUCGLU (P < 0.01),as compared with those in NGT group.Blood glucagon levels during OGTF and incremental area under the glucagon curve (AUCGL) showed no significant differences between 2 groups (P > 0.05).Multiple linear regression analysis showed that ISI-Matsuda,ISSI,HOMA-β,Stumvoll 1-and 2-phase insulin secretion indices accounted partially for the change of plasma glucose and ISI-Matsuda was the most important one among them.The function of islet α-cell seems to be normal while the function of β-cell is impaired in the patients with GDM,and failure of insulin secretion to overcome insulin resistance is the main reason for GDM.
2.Dynamic changes in plasma CD62P and their significance among patients with obstructive jaundice and cholecystolithiasis
Yuhuai ZHANG ; Changjiang LUO ; Wenhu WANG
Journal of Clinical Hepatology 2014;30(11):1157-1159
Objective To analyze and study the implication of dynamic changes in plasma CD62P among patients with obstructive jaundice and cholecystolithiasis.Methods A total of 58 patients diagnosed with choledocholithiasis and jaundice were included in the obstructive jaundice group,and 50 patients were in the cholecystolithiasis group.Peripheral venous blood was collected on preoperative day 3,on opera-tive day,and on postoperative days 3,6,9,12,15,18,and 21 in two groups,and the concentrations of plasma CD62P were measured by ELISA.Comparison of continuous data between the two groups was made by t test.Results The concentrations of plasma CD62P from preop-erative day 3 to postoperative day 18 were significantly higher in the obstructive jaundice group than in the cholecystolithiasis group (P<0.01 across all time points).In the cholecystolithiasis group,the concentrations of plasma CD62P significantly increased on operative day, and the increase continued and reached the peak on postoperative day 3,then followed by a decrease down to the preoperative level on post-operative day 9.In the obstructive jaundice group,the concentrations of plasma CD62P reached the peak on postoperative day 9,followed by a gradual decrease down to the preoperative level on postoperative day 18 and to an even lower level (preoperative level of patients with cho-lecystolithiasis)on postoperative day 21.Conclusion Extrahepatic biliary obstruction may lead to endothelial cell injury and platelet acti-vation,the condition of which is improved with the relief of obstruction.The surgery for obstructive jaundice may lead to much more endothe-lial cell injury and higher platelet activation than that for cholecystolithiasis.
3.Effect of TNF-? on PPAR?2 mRNA expression in 3T3-L1 adipocytes transfected with the human recombinant adiponectin
Qimei SHE ; Xianzhong SHI ; Changjiang WANG
Chinese Journal of Diabetes 1994;0(03):-
Objective To observe effect of TNF-? on PPAR?2 mRNA expression in 3T3-L1 cells transfected with human recombinant adiponectin. Methods The 3T3-L1 preadipocytes were transfected with the recombinant plasmid pcDNA3.1+-hADPN.The PPAR?2 mRNA expression was quantitated by semi-quantitative RT-PCR. Results (1)Compared with controls(the 3T3-L1 cells and the 3T3-L1 cells with plasmid), the PPAR-?2 mRNA expression of 3T3-L1 cells with human recombinant adiponectin was higher(P
4.Mouse Bone Marrow Cell Mutation Induced by Vechile Exhaust
Changjiang REN ; Yan LUO ; Hongwei WANG ;
Journal of Environment and Health 1992;0(05):-
Objective To investigate the effects of the mouse bone marrow cell mutation induced by vechile exhaust. Methods The mice were divided into two groups. The experimental group exposed to car exhaust, after exposure of given days (15 d, 30 d, 45 d, 60 d), bone marrow micronucleus and SCE rates in the experimental group were compared with the control. Results Significant differences had been seen between the two groups in bone marrow micronucleus and SCE rates except the 15 d group. The rate of the bone marrow cell mutation was positively correlated to the periods of exposure to car exhaust. Conclusion Car exhaust has effect of mutation on mouse cells.
5.Investigation and Analysis of the Anticoagulant Therapy for Patients with Non-valvular Atrial Fibrillation in Our Hospital
Changjiang WANG ; Aili FEI ; Hang ZHU ; Xiaoqin WANG ; Libiao TU
China Pharmacy 2017;28(11):1459-1462
OBJECTIVE:To investigate the current situation of anticoagulant therapy for patients with non-valvular atrial fibril-lation,and to provide reference for standardized anticoagulant therapy. METHODS:A total of 1056 patients with non-valvular atri-al fibrillation were collected from our hospital during Jul. 2015-Jun. 2016. According to 2012 European Society of Cardiology Guide-lines for the Management of Atrial Fibrillation,the risks of thrombosis and hemorrhage were evaluated,and the standardized anti-coagulant therapy was also evaluated. RESULTS:Among 1056 patients with non-valvular atrial fibrillation,the number of patients with thrombosis risk score ≥1 was 1028,accounting for 97.3%. 763 patients received antithrombosis therapy,and only 139 pa-tients were given warfarin anticoagulant therapy. The international normalized ratio(INR)of prothrombin time in just 30.9% of pa-tients receiving warfarin was in line with the standard before discharge. CONCLUSIONS:The anticoagulant therapy for patients with non-valvular atrial fibrillation is still not optimistic,and effective measure should be adopted to improve the standardization of anticoagulant therapy in the patients with atrial fibrillation.
6.Advances in research on anti-fatigue effect of phytochemicals
Yawen WANG ; Zhonghao XIN ; Weina GAO ; Changjiang GUO
Military Medical Sciences 2016;40(12):1009-1012
Fatigue not only affects people′s lives and work, but also causes diseases .Numerous studies have shown that some phytochemicals can promote body energy metabolism and regeneration , improve physical condition , resist fatigue growth and accelerate fatigue alleviation .This paper reviewed the recent research progress , domestic and overseas , in the anti-fatigue effect of phytochemicals .
7.Effects of Cu~(2+), Zn~(2+) and Mn~(2+)on postsynaptic sites
Yongxiao CAO ; Xiping CHE ; Weihong LI ; Changjiang WANG
Chinese Pharmacological Bulletin 1986;0(06):-
Effects of Cu2+,Zn2+and Mn2+ on responses to ACh were studied with toad rec-tus abdominis. Cu2+, Zn2+and Mn2+concentra-tion- dependently shifted the concentration-response curves for ACh to the right unparallelly and reduced the maximal response considerably. The pAh values of Cu2+ , Zn2+ and Mn2+ were 3.69, 2.95 and 2. 62, respectively. The inhibitory potent of Cu2+ and Zn2+ seemed to be 11.7 times and 2. 1 times respectively more thanthat of Mn2+. It was suggested that Cu2+, Zn2+ and Mn2+postsynaptically interfere with the action of ACh. However, Zn2+in lower concentration shifted the bottom section of the curve for ACh to the left and top, and shifted the top section of the curve to the right, suggesting that Mn2+in lower concentration be possessed of partial agonistic property.
8.Mechanism study on Dahuangzhechong pill antiplatelet activation
Dongsheng WANG ; Fangping CHEN ; Shilin HE ; Changjiang XIAO ; Faqing TANG
China Journal of Traditional Chinese Medicine and Pharmacy 2006;0(09):-
Objective: To investigate the inhibitory effect of Dahuangzhechong pill to platelet activation.Methods: The blood platelet were incubated with the medicated blood plasma with Dahuangzhechong pill,and then activated with ADP and marked with PAC-1 monoclonal antibody.The activation rate of blood platelet was analyzed by flow cytometer.The patients with coronary heart disease or cerebral infarction took Dahuangzhechong pill,after one course of treatment,the patients,blood platelet were separated and then incubated with PAC-1 monoclonal antibody.The activation of blood platelet was detected by ? ow cytometer.Results: Compared with aspirin group(51.7%),the activation rate(20.82%) of blood platelet in Dahuangzhechong pill group decreased(P
10.Variable fragment of heavy chain antibody against the terminal protein region of hepatitis B virus polymerase introduced by Tat protein transduction domain inhibits the replication of hepatitis B virus in vitro
Junyan YU ; Lin LAN ; Jungang LI ; Changjiang ZHANG ; Yuming WANG
Chinese Journal of Infectious Diseases 2009;27(6):321-325
Objective To study a functional variable fragment of heavy chain(VH)antibody against the terminal protein(TP)region of hepatitis B virus(HBV)polymerase introduced by human immunodeficiency virus Tat protein transduction domain(TAT)and the inhibitive activity of TAT-VH on the replication of HBV in vitro.Methods The gene encoding TAT-VH was cloned into prokaryotic expression vector pET28a(+).Recombinant plasmid was transduced into E coli BL21(DE3)LysS,then the protein was expressed and purified.The purified TAT-VH fusion protein was added into HepG2.2.15 cell culture.The transduction efficiency was evaluated by indirect fluorescence assay(IFA).The cytotoxicity of TAT-VH was detected by Methabenzthiazuron(MTT)assay.HBV DNA level in HepG2.2.15 cell culture was measured using quantitative polymerase chain reaction(PCR).The data were analyzed by one-factor analysis of variance and t test.Results TAT-VH fusion protein was successfully expressed and purified.It was confirmed by IFA and MTT assay that TAT-VH was introduced into HepG2.2.15 cells and the cell growth was not affected.The level of HBV DNA in supernatant of HeDG2.2.15 cell culture with 5 000 nmol/L TAT-VH was(1.211±0.132)lg copy/mL,which was significantly lower than control group[(5.325±0.041)lg copy/mL,t=72.91,P<0.05].Meanwhile,the level of intracellular HBV DNA was(3.521±0.411)lg copy/mL,which was significantly lower than control group[(8.532±0.132)lg copy/mL.t=28.41,P<0.05].Conclusion The HBV replication is inhibited by anti-TP TAT-VH antibodies in vitro,which provides valuable experimemal basis for developing therapy of HBV infection with intracellular antibody.