1.Molecular epidemiological characteristics of metallo-β-lactamase-producing Pseudomonas aeruginosa from Changsha
Jingmin WU ; Mingxiang ZOU ; Jun LI
Chinese Journal of Infection Control 2016;15(7):447-451
Objective To investigate the genotypes and epidemic of metallo-β-lactamase-(MBL )-producing Pseudomonas aeruginosa (P .aeruginosa)in Changsha.Methods P .aeruginosa isolated from seven comprehensive hospitals in Changsha were collected and performed identification and antimicrobial susceptibility testing,pheno-types of MBL were detected with EDTA-disk synergy test and E-test,genotypes were determined by polymerase chain reaction (PCR),homology analysis were conducted by enterobacterial repetitive intergenic consensus PCR (ERIC-PCR).Results Preliminary screening by EDTA-disk synergy test and E-test showed that only 10 of 81 iso-lates were strong positive;PCR result showed that 18 isolates were positive for MBL,11 of which were IMP-9-type MBL,1 was IMP-1-type,and 6 were VIM-2-type.SIM,SPM,GIM,and NDM-1-types were not found.ERIC-PCR showed that 12 strains of IMP-producing P .aeruginosa has multiple types,6 VIM-2-producing strains were of the same type.Conclusion IMP-9 and VIM-2 are main genotypes in P .aeruginosa in Changsha.
2.Inhibition on proliferation of hepatoma HepG-2 cell treated with Curcumin combined with Glycyrrhetinic acid
Mingxiang CHANG ; Meimei WU ; Hangmin LI
Drug Evaluation Research 2017;40(1):42-47
Objective To study the inhibitory effect of Curcumin combined with Glycyrrhetinic acid on proliferation of HepG-2 cell,and probe the reasonability and scientificity of curcuma combined with glycyrrhiza.Methods The CCK-8 method was used to test the proliferation inhibition rate of HepG-2 cells after treated with Curcumin (10.00,5.00,2.50,and 1.25 μg/mL),Glycyrrhetinic acid (20.0,10.0,5.0,and 2.5 μg/mL) and Curcumin combined with Glycyrrhetinic acid in corresponding concentration for different time (8,16,or 24 h).Flow cytometry was used to detect the cell apoptosis and the cell cycle of HepG-2 cells after treated with Curcumin (5 μg/mL),Glycyrrhetinic acid (10 μg/mL) and Curcumin combined with Glycyrrhetinic acid in corresponding concentration for 24 h.Results Curcumin,Glycyrrhetinic acid and drug combination obviously inhibited the proliferation of HepG-2 cells in a time-and concentration-dependent manner,the effects of combination group was more stronger and showed additive effect or synergistic effect.The apoptosis rate of HepG-2 cells was significantly increased after treated with three groups of drug,combination group showed additive effect;Curcumin,Glycyrrhetinic acid and the drug combination showed significant G2 arrest.Conclusion Curcumin combined with Glycyrrhetinic acid has positive effect on inhabiting the proliferation and promoting apoptosis of HepG-2 cell.Curcuma combined with glycyrrhiza possess reasonability and scientificity.
3.The relativity analysis of carotid artery atherosclerosis and various coronary artery disease
Mingxiang WU ; Yunzhi CHEN ; Liya FANG ; Yuchun YANG
Journal of Chinese Physician 2011;(z1):4-7
Objective To determine the relationship between the aggravation of CAAS and coronary atherosclerosis (CAS) ;and to summarize the pathologic character of CAAS of the patients with various coronary artery disease. Methods Review the result of coronary angiography and carotid artery ultrasonography and the related risk factors of the patients who were diagnosed as CAD through coronary angiography ( CAG). The patients were divided into the scleratheroma group and the non scleratheroma group. The patients were divided into stable angina pectoris( AP) group, unstable angina pectoris(UAP) group and acute myocardial infarction (AMI) group according to the criterion of coronary artery disease of WHO. The patients were divided into group A (coronary artery of single vessel lession) ,group B( coronary artery of double vessel lession ) , group C( coronary artery of triple vessel lession )and group D(left main vessel lession ).The aggravation of CAAS was graded. Results There were 198 patients with various CAAS among 228 patients with coronary artery disease ( 86. 8%). CAAS was much related with hypertension and non-related with age, sex, BMI, smoking, drinking, hyperlipoidemia, hyperuricosuria and diabetes mellitus. The aggravation of CAAS much graver with much graver CAS. But only the plaque number of Group A was more than Group D( P <0. 05). The grading integral and Crouse integral of CAAS of AP group was not remarkable less than UAP group. The grading integral of CAAS of AP group was less than AMI group and the Crouse integral of AP group was more. But there was no remarkable difference. The number of all plaque,plaque and plaque of AP group was not remarkable less than UAP group and AMI group. There was the plaque among the three group. Conclusion Carotid artery atherosclerosis (CAAS) is relative to coronary artery disease ( CAD).
4.Correlation between fractional anisotropy values of diffusion tensor imaging and working memory impairment in patients with depression
Lijie REN ; Bingxun LU ; Mingxiang WU ; Manfu HAN ; Jing LI
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(4):325-327
Objective To investigate whether there are correlations between working memory impairmentand fractional anisotropy values and to explore the neuropathology underlying that the patients of depression suffered from memory impairment.Methods Thirty depression patients and 30 healthy controls group-matched by age,educational level were conducted the study.Mean correct reaction time(mRT)was recorded when they performed a One-Back Working Memory Task and fractional anisotropy(FA)values was recorded when they performed the diffusion tensor imaging.Statistics analysis was done respectively for mRT and FA values between two groups.Results Relative to mean correct reaction time((612.45±54.08)ms)of controls,the mean correct reaction time ((720.25±57.02)ms)of patients with depression was much longer(P<0.05)and the patients with depression had a lower FA values in the white matter of both frontal lobe,anterior cingulate gyrus,supramarginal gyrus,splenium of corpus callosum(P<0.05),and the FA values in the white matter of both frontal lobe were significantly negative correlated with mRT(r=-0.604,P<0.05).Conclusion The impairment of white matter region may be one of the neuropathology underlying that the depression patients suffer from memory impairment.
5.Effects of hypoxia inducible factor-1α with high expression mediated by hypoxia precondition on the JNK signaling pathway in rats received orthotopic liver autotransplantation
Zhongliang MENG ; Mingxiang TIAN ; Peijian ZHANG ; Jie ZHANG ; Zhuonan ZHUANG ; Hui SU ; Xueyan WU ; Cheng JIN
Chinese Journal of Digestive Surgery 2011;10(4):282-285
Objective To investigate the expression of hypoxia inducible factor-1α(HIF-1α)in the transplanted liver in rats and the role of HIF-1α in the JNK signaling pathway.Methods Ninety-six SD rats were randomly divided into normal control(NC)group,autotransplantation(AT)group,hypoxia preconditioning (HP)+ AT group according to simple random sampling method.No treatment was applied to the rats in the NC group except for blood vessel separation.Stable rat models of 70% AT was established in the AT group.Rats in the HP + AT group were given 8% oxygen mixed gas for 90 minutes before the operation.The levels of alanine aminotransferase(ALT)and aspartate aminotransferase(AST)were detected at 1,2,12,24 hours after operation,and the expression of HIF-1α in the hepatic tissue,mRNA expression of c-Jun,and protein expression of Cleaved Caspase-3 were detected by immunohistochemical staining,reverse transcription-polymerase chain reaction and Western blot,respectively.All data were analyzed using the analysis of variance or t test.Results The levels of ALT and AST in the HP + AT group were significantly lower than those in the AT group,while higher than those in the NC group at 1,2,12 and 24 hours after the operation(F=2631.371,1177.642,810.383,682.848;743.618,1095.522,375.995,580.613,P <0.05).The protein expression levels of HIF-1α in the AT group were significantly lower than those in the HP + AT group,but higher than those in the NC group at 1,2,12 and 24 hours after operation(F = 191.737,284.482,459.419,213.782,P < 0.05).The mRNA expression levels of c-Jun in the HP + AT group were significantly lower than those in the AT group,while higher than those in the NC group at 1,2 and 12 hours after operation(F = 66.211,53.169,9.645,P < 0.05).There was no significant difference in the mRNA expression of c-Jun among the 3 groups at 24 hours after operation(F = 1.100,P > 0.05).The protein expressions of Cleaved Caspase-3 in the HP + AT group were significantly lower than those in the AT group,while higher than those in the NC group at 1,2,12 and 24 hours after the operation(F =23.133,31.158,14.347,29.043,P < 0.05).Conclusion High expression of HIF-1α after HP inhibits apoptosis of hepatic cells and alleviates ischemia reperfusion injury of hepatic tissues by suppressing JNK activation,down-regulating protein expression of Cleaved Caspase-3 after orthotopic liver transplantation in rats.
6.Effect of tripterysium glucosides on diabetic cardiomyopathy in rats.
Mingxiang TANG ; Yin GUO ; Yulu ZHOU ; Guoling WU
China Journal of Chinese Materia Medica 2009;34(6):740-743
OBJECTIVETo observe the effect of heart protection on diabetic cardiomyopathy in rats by tripterysium glucosides.
METHODThe rat diabetic cardiomyopathy rats model are made by streptozotocin, then divided into tripterysium glucosides group (n=8) and model group (n=8). In addition, the control group is established (n=8). Glucosides group was orally administrated tripterysium glucosides (18 mg x kg(-1)), the control groups was orally administrated same volume NS for 3 months. Blood sugar, heart function and cardiac index were detected after 3 months. Immunohistochemical techniques were used to detect NF-kappaB and ICAM-1 expression. Ultrastructure of cardiac muscle cell were observed by electronmicroscope.
RESULTCompared with model group, cardiac index was decreased after tripterysium glucosides administration, and LVSP, LVEDP, + dp/dtmax, -dp/dtmax, were improved, and the expression of nuclear Factor-kappaB (NF-kappaB) and intercellular adhension molecule-1 (ICAM-1) was inhibited. Ultrastructure of cardiac muscle cell such as mitochondrion and cardiac muscle fibers was atttenuated.
CONCLUSIONTripterysium glucosides could protect rat diabetic cardiomyopathy rats heart. These function may be related to inflammatory reaction inhibition and immunosuppression of tripterysium glucosides.
Animals ; Blood Glucose ; metabolism ; Cardiomyopathies ; etiology ; metabolism ; pathology ; physiopathology ; Diabetes Mellitus, Experimental ; complications ; Gene Expression Regulation ; drug effects ; Glucosides ; administration & dosage ; pharmacology ; therapeutic use ; Heart ; drug effects ; Intercellular Adhesion Molecule-1 ; metabolism ; Male ; Myocardium ; ultrastructure ; NF-kappa B ; metabolism ; Rats
7.Differential diagnosis between Crohn's disease and intestinal tuberculosis based on clinical manifestations, endoscopic and CT findings
Qingqiang ZHU ; Jingtao WU ; Wenxin CHEN ; Jin ZHENG ; Mingxiang CHEN ; Xianfu LUO
Chinese Journal of General Practitioners 2012;(10):765-769
The clinical data,endoscopic and CT findings of 39 patients with Crohn's disease(CD) and 24 patients with intestinal tuberculosis (ITB) were retrospectively reviewed.Diarrhea,hematochezia,perianal disease,intestinal obstruction,occurred more frequently in CD than in ITB (P <0.05 or <0.01).Night sweating,febrility,pulmonary tuberculosis and ascites were more common in ITB than in CD (P <0.01).The endoscopic findings showed that longitudinal ulcer,cobblestone sign,intestinal stricture were detected more often in CD than in ITB (P < 0.05 or < 0.01),but transverse ulcer and rodent ulcer were more frequently found in ITB than in CD (P <0.05 or <0.01).On the CT imaging mural gas,fat,enteric cavity stenosis and layering thickening were more common in CD than in ITB (P < 0.05 or < 0.01),but mural single layer thickening and hollow lymph nodes were discovered more frequently in ITB than in CD (P < 0.01).The degree of intestinal wall thickening,enhancement and lymph nodes enlargement of ITB were more severe than that of CD (P < 0.01).The clinical manifestations combined with endoscopic and CT finding may improve the differential diagnosis between Crohn's disease and intestinal tuberculosis.
8.A comparative study of external fixation, expert tibial nail and minimally invasive percutaneous plate osteosynthesis in treatment of AO type 43A tibial fractures
Mingxiang CHAI ; Bing ZHAO ; Wenwu ZHANG ; Yongbo AN ; Xin GUO ; Xirui WU
Chinese Journal of Orthopaedic Trauma 2016;18(7):579-585
Objective To compare the clinical effectiveness of external fixation,expert tibial nail (ETN) and minimally invasive percutaneous plate osteosynthesis (MIPPO) in the treatment of AO type 43A tibial fractures.Methods The clinical data of 102 patients with AO type 43A tibial fracture were retrospectively analyzed who had been treated from June 2010 to June 2014.They were 68 men and 34 women,from 18 to 71 years of age (average,36 years).By AO classification,there were 36 cases of type A1,45 ones of type A2,and 21 ones of type A3.External fixation was used in 30 cases,MIPPO in 42,and ETN in 30.The 3 groups were compared in terms of operation time,blood loss,fracture healing time,complications and functional evaluation according to American Orthopaedic Foot and Ankle Society (AOFAS) criteria for middle and fore foot.Results The operation time in external fixation group (72.7 ± 16.1 min) was significantly less than in MIPPO group (101.5±15.1 min) and ETN group (115.0±11.2 min) (P <0.05).The blood loss and fracture healing time in external fixation group were (320.6 ±40.8 mL) and (160.6 ± 25.0 days),significantly greater than in MIPPO group (125.5 ± 27.3 mL and 120.3 ± 20.2 days)and ETN group (124.2±25.4mL and 125.5±25.6 days) (P <0.05).The total complication rate in external fixation group (53.3%,16/30) was significantly higher than in MIPPO group (9.5%,4/42) and ETN group (10.0%,3/30) (P < 0.05).The total AOFAS excellent to good rate in external fixation group (66.7%,20/30) was significantly lower than in MIPPO group (88.1%,37/42) and ETN group (90.0%,27/30) (P < 0.05).However,there were no significant differences between MIPPO and ETN groups concerning all the above outcome indicators (P > 0.05).Conclusions For AO type 43A tibial fractures,internal fixation should be the first choice.Both MIPPO and ETN can lead to good clinical efficacy.However,in cases where internal fixation is not suitable,external fixation with distal lateral tibial nails at the Chaput tuberosity can obtain satisfactory ankle function.
9.Effects of Chinese herbal medicine Shenxiong Yujing Granule on regeneration of neural cells in rats with diabetes-associated cerebral ischemia.
Hui HAN ; Limin WU ; Mingxiang HAN ; Wenming YANG ; Daojun XIE ; Zhaohui FANG ; Danchen CHU ; Fang FANG
Journal of Integrative Medicine 2012;10(10):1140-8
To establish a rat model of diabetes-associated cerebral ischemia due to qi and yin deficiency and blood stasis, and to investigate the effects of Radix Ginseng, Rhizoma Chuanxiong, Rhizoma Polygonati Odorati and Rhizoma Polygonati Sibirici Granule (Shenxiong Yujing Granule), which has the function of strengthening qi, nourishing yin, and activating blood, on proliferation, differentiation and survival of neural cells in rats with diabetes-associated cerebral ischemia.
10.Comparative study of CT appearances in clear cell renal cell cracinoma, renal cell carcinoma associated with Xp11.2 translocation/TFE gene fusion, collecting duct carcinoma and chromophobe renal cell carcinoma
Qingqiang ZHU ; Zhongqiu WANG ; Shouan WANG ; Wenxin CHEN ; Mingxiang CHEN ; Lun JIANG ; Jingtao WU
Chinese Journal of Urology 2014;35(3):168-173
Objective To investigate the differential diagnostic features of subtpes of renal cell carcinoma (RCC) using CT scan.Methods The CT appearances of 53 RCCs,including 28 clear cell RCCs (CCRCC),6 Xp11.2 /TFE RCCs (Xp11.2 /TFE RCC),7 collecting ducts RCCs (CDC),12 chromophobe RCCs (CRCC),were retrospectively analyzed and compared with finding of pathology.Dynamic contrast-enhanced CT (DCE-CT) was conducted in each case after intravenous administration of contrast agent,and the data was analyzed by AVONA and LSD text.Results On unenhanced and enhanced CT,most CCRCCs and CDCs showed heterogeneous density (23/28,6/7),with necrosis (21/28,6/7),and most Xp11.2/TFE RCCs,CRCCs showed homogeneous density(5/6,8/12).Most CCRCCs,Xp11.2/TFE RCCs and CRCCs had clearly boundaries with well demonstrated at enhanced CT delayed phase (25/28,6/6,10/12),CDCs had unclearly boundaries (6/7),and most CCRCCs had lymph node or other metastasis (19/28).A phenomenon of quick staining and quick fainting was observed in CCRCCs.Xp11.2/TFE RCCs,CDCs,CRCCs showed delayed enhancement.On unenhanced CT,the Xp11.2/TFE RCC attenuation was greater than CCRCC,CDC,CRCC and normal renal cortex (53.7±4.1 vs 45.8±3.6 vs 41.4±2.4 vs 47.7±3.6 vs 41.5±5.1,F=5.458,P<0.01,respectively).The enhancement degree was highest for CCRCCs,lowest for CDCs,and intermediate for Xp1 1.2/TFE RCCs and CRCCs.The enhancement degree of Xp1 1.2/TFE RCC was higher than that of the CDC and CRCC (P< 0.01).The enhancement degree of Xp11.2/TFE RCC and CRCC were higher than that of the normal renal medulla at cortical and medullary phases (P<0.01),but lower than that of the renal medulla on delayed phase (P<0.01).The enhancement degree of CDC were lower than that of the normal renal cortex and medulla on cortical,medullary and delayed phases (P<0.05).Conclusions CT could distinctly show imaging features of CCRCC,Xp1 1.2/TFE RCC,CDC and CRCC,which were related to their pathological characteristics,and these features were helpful in predicting a specific subtype of RCC.