Objective To observe the effect of angiotensin-converting enzyme inhibitor(ACEI) on insulin sensiti-(vity) in dogs with acute myocardial infarction(AMI) after thrombolytic treatment. Methods Twenty dogs were made as AMI models and then underwent thrombolytic treatment.The dogs were divided into the control group(n=10) and the captopril group(n=10) randomly.Insulin,plasma glucose,erythrocyte insulin receptor(EIR),nitrogen(NO) and angiotensin Ⅱ(AT Ⅱ) were(detected) and insulin sensitivity index(ISI) was calculated.The changes of these values in the two groups were contrasted. Results After reperfusion for 120 min,in the control group,ISI and AT Ⅱgot much more rise while EIR and NO fell much more(P

Objective To observe the lecithin's effect on membrane of African green monkey kidney cells (Vero) exposed to sodium arsenite(NaAsO2). Methods Vero cells cultured in vitro were divided into 4 groups:control group (saline), model group (2.20 mg/L NaAsO2), high eoncentration of lecithin and arsenic group (53.33mg/L lecithin + 2.20 mg/L NaAsO2), low eoncentration of lecithin and arsenic group( 13.32 mg/L lecithin + 2.20 mg/L NaAsO2), 6 bottles of cells in each group, medium was changed every 2 days, cultured for 120 h. Na+ ,K+-ATPase activities of membrane were measured by spectrophotometry, and membrane phospholipids composition including phosphatidylserine (PS), phosphatidylethano-lamine (PE), phosphatidylcholine (PC) and sphingmyelin (SM) were measured by high performance liquid chromatography (HPLC). Results The Na~, K+-ATPase activities of membrane of control group, model group, high concentration of lecithin and arsenic group, low concentration of lecithin and arsenic group were (0.962 ± 0.081) × 106, (0.544 ± 0.037) × 106, (0.647 ± 0.043) x 106, (0.550±Compared with control group, the Na+ ,K+-ATPase activities of other 3 groups were significantly reduced (all P < 0.05). Compared with model group, the Na+ ,K+-ATPase activity in high concentration of lecithin and arsenic group was significantly higher (P < 0.05),but in low concentration of lecithin and arsenic group did not change significantly (P > 0.05). Compared with control group[(0.087 ± 0.003), (0.127 ± 0.053), (0.588 ± 0.105),(0.071 ± 0.029)g/L], PS, PE, PC, SM levels in model group[(0.051 ± 0.018), (0.073 + 0.030), (0.240 ±0.038), (0.047 ± 0.121 )g/L] were significantly lower(all P < 0.05) ;PS, PE, PC in high concentration of lecithin and arsenic group[(0.084 ± 0.011), (0.109 ± 0.363), (0.591 ± 0.476)g/L] did not change significantly(all P > 0.05), but SM[(0.057 ± 0.004)g/L] significantly decreased(P < 0.05) ;PS, PE, SM levels of low concentration of lecithin and arsenic group[(0.058 ± 0.020), (0.086 ± 0.177), (0.048 ± 0.103)g/L] significantly reduced (all P < 0.05), the PC did not change significantly [(0.521±0.098 )g/L, P > 0.05]. Compared with model group,the levels of PS, PE, PC, SM in high concentration of lecithin and arsenic group were significantly higher(all P <0.05);PS, PE, SM levels in low concentration of lecithin and arsenic group did not change significantly(all P > 0.05), and PC was significantly higher(P < 0.05). Conclusions High concentration lecithin has certain protective effect on Vero cell membrane exposured to sodium arsenite.

OBJECTIVETo investigate the effects of histone deacetylase 2 (HDAC2) expression on cell proliferation, apoptosis and migration of laryngeal squamous cell carcinoma (LSCC) Hep-2 cells.

METHODSHDAC2 siRNA and control siRNA were transfected into LSCC Hep-2 cells by lipofectamine 2000, and cells were divided into three experimental groups: untreated group, control siRNA group and HDAC2 siRNA transfection group. Western blotting was utilized to detect the expression of HDAC2 protein in Hep-2 cells. Cell proliferation and apoptosis were investigated by CCK-8 kit and flow cytometry, respectively. Boyden chamber was used to study cell migration. Expressions of cell apoptosis and cell migration related proteins were detected by Western blotting.

RESULTSHDAC2 siRNA significantly down-regulated the expression of HDAC2 protein in LSCC Hep-2 cells. Down-regulation of HDAC2 expression coincided with an inhibition of cell proliferation and migration along with an induced cell apoptosis of Hep-2 cells. Moreover, down-regulation of HDAC2 expression significantly increased the expressions of caspase-3 and caspase-9 proteins but decreased the expressions of matrix metalloproteinases (MMP)-2 and MMP-9 proteins.

CONCLUSIONSHDAC2 may play a pivotal role in the initiation and development of LSCC. Down-regulation of HDAC2 expression mediates cell apoptosis. Cell migration inhibition may be tightly associated with overexpression of caspase-3 and caspase-9 along with down-regulation of MMP-2 and MMP-9 expressions.

Apoptosis ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Caspase 3 ; metabolism ; Caspase 9 ; metabolism ; Cell Line, Tumor ; Cell Movement ; Cell Proliferation ; Down-Regulation ; Histone Deacetylase 2 ; genetics ; metabolism ; Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; Matrix Metalloproteinase 2 ; metabolism ; Matrix Metalloproteinase 9 ; metabolism ; RNA Interference ; RNA, Small Interfering ; genetics ; Transfection

OBJECTIVETo compared the efficacy of drug-coated balloon and common balloon for treatment of superficial femoral artery and popliteal artery occlusive disease.

METHODSForty-six patients were admitted for ipsilateral single or multiple superficial femoral artery and/or popliteal artery lesions (between 3 and 15 cm stenosis or occlusion), Rutherford grades 2 to 5, with or without other accompanying diseases in the Department of Interventional Vascular Therapy of the First Hospital of Nanjing between September, 2015 and December, 2016. The patients were randomly assigned into drug-coated balloon (DCB) group (n=23) and common balloon (CB) group (n=23). None of the patients had stent restenosis, aneurysms, acute thrombosis, pregnancy, life expectancy less than 1 year, or below-the-knee artery occlusion. The late lumen loss (LLL), improvement of the ankle brachial index (ABI), improvement of Rutherford grade, incidence of restenosis, thrombosis rate and amputation rate were compared between the two groups at 6 months after treatment.

RESULTSThe two groups of patients were comparable for general conditions, risk factors, and characteristics of the compromised vessels (P>0.05). Six months after treatment, the patients in DCB group showed significantly smaller LLL, more obvious improvement of the ABI and Rutherford grade, and lower restenosis rate and thrombosis rate than those in CB group (P<0.05). The amputation rates were similar between the two groups (P>0.05).

CONCLUSIONSDCB shows obvious advantages over common balloon for treatment of superficial artery and popliteal artery arteriosclerosis obliterans in that it more effectively reduces LLL, restenosis rate and thrombosis rate and improves the ABI and Rutherford grade at 6 months after the treatment.

OBJECTIVETo investigate the effects of different X-ray doses on the expression of nuclear factor-kappaB (NF-kappaB) P65 in human oral squamous cell carcinoma cell (OSCC) line and the relationship between NF-kappaB P65 and radiation-induced OSCC cell line apoptosis.

METHODSThe squamous cell carcinoma of Tca8113 cell was cultivated in the 37 degrees C, 5% CO2 incubator after recovery. The experiment samples were divided into six groups (control group, 2, 4, 6, 8, 10 Gy). After growing to logarithm period, Tca8113 cells were irradiated using above-mentioned X-ray doses. The immunocyteochemistry and Western blot were used to detect the expression of NF-kappaB P65 after irradiation in various times (1, 3, 6, 10, 24, 48 h). The apoptosis rates under different radiotherapy dose were detected by flow cytometer and TDT-mediated dUTP-biotin nick end labeling (TUNEL).

RESULTSCompared with the control group, cytoplasm expression of P65 under different X-ray doses had statistically significant differences (P < 0.05). While the cytoplasm P65 protein expression at different time were compared each other, the 3 h group demonstrated significant difference (P < 0.05). Apoptosis rates in various groups, compared with control group, had statistically significant differences (P < 0.05). While the groups at different time points were compared each other, the apoptosis rates of 3 h group had significant differences (P < 0.05).

CONCLUSIONX-ray can activate the NF-kappaB P65 in oral squmaous cell carcinoma cell lines. The correlation between expressional quantity of P65 and radiotherapy induced apoptosis of oral squamous cell carcinoma cell lines possesses positive correlation. The activated and intranuclear P65 may have radiotherapy resistant effect.

Apoptosis ; Carcinoma, Squamous Cell ; Cell Line, Tumor ; Humans ; Mouth Neoplasms ; Transcription Factor RelA

OBJECTIVETo explore the effect of ginkgo leaf extract (GLE) on vascular endothelial function (VEF) in patients with early stage diabetic nephropathy (DN).

METHODSSixty-four patients were randomized equally by a randomzing digital table into two groups, the treated group and the control group. They were all treated for 8 weeks with conventional therapy for diabetes, but GLE tablets were given to the treated group additionally. Changes in VEF were estimated before and after treatment by ultrasonic examination of the brachial artery. In the meantime, changes in plasma levels of the von Willebrand factor (vWF), nitric oxide (NO) and endothelin-1 (ET-1) were observed as well.

RESULTSThe brachial arterial endothelium dependent dilating function in the treated group increased from 4.91+/-2.31% before treatment to 6.78+/-3.89% after treatment (P<0.05), while the level of vWF decreased from 182.05+/-64.13% to 128.56+/-48.98%, and that of NO increased from 50.16+/-24.64 micromol/L to 70.65+/-28.71 micromol/L (P<0.01). However, these indexes were not significantly changed in the control group after treatment (P>0.05).

CONCLUSIONGLE could decrease the plasma level of vWF, raise the plasma NO level and improve the endothelium dependent vascular dilating function in DN patients.

Aged ; Brachial Artery ; drug effects ; pathology ; Diabetic Nephropathies ; blood ; drug therapy ; physiopathology ; Endothelium, Vascular ; drug effects ; Female ; Ginkgo biloba ; chemistry ; Humans ; Male ; Middle Aged ; Phytotherapy ; Plant Extracts ; pharmacology ; therapeutic use ; Plant Leaves ; chemistry

OBJECTIVETo investigate the CT and MRI manifestatitions of intraductal papillary mucinous neoplasm (IPMN) of the pancreas.

METHODSBoth clinical and imaging data of 12 pathologically confirmed intraductal papillary mucinous neoplasm, of the pancreas were retrospectively analyzed.

RESULTSThe pancreatic IPMN can be classified into two types based on CT image: the branch duct IPMN (n=7) originated from the head and uncinate process of the pancreas. The tumor consisted of lobulated or clustered small cyst lesions with septa among them, the wall and septa can be enhanced; the combined IPMN (n=5) involved branch ducts of the uncinate process as well as the main pancreatic ducts with dilatation (diameter: 4-7 mm), one of these involved the branch ducts along the pancreatic body. The pancreatic IPMN was mainly found in elderly patient with a chief clinical symptoms of abdominal pain and/or pancreatitis.

CONCLUSIONThe intraductal papillary mucinous neoplasm of the pancreas enjoys specific features in CT and MRI image, which are helpful to the diagnosis.

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Pancreatic Ductal ; diagnosis ; diagnostic imaging ; Carcinoma, Papillary ; diagnosis ; diagnostic imaging ; Cystadenocarcinoma, Mucinous ; diagnosis ; diagnostic imaging ; Diagnosis, Differential ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Pancreatic Ducts ; diagnostic imaging ; pathology ; Pancreatic Neoplasms ; diagnosis ; diagnostic imaging ; Retrospective Studies ; Sensitivity and Specificity ; Tomography, X-Ray Computed

OBJECTIVE: To evaluate the value of early identification and endovascular treatment of iliac vein compression syndrome (IVCS), with or without deep vein thrombosis (DVT). MATERIALS AND METHODS: Three groups of patients, IVCS without DVT (group 1, n = 39), IVCS with fresh thrombosis (group 2, n = 52) and IVCS with non-fresh thrombosis (group 3, n = 34) were detected by Doppler ultrasonography, magnetic resonance venography, computed tomography or venography. The fresh venous thrombosis were treated by aspiration and thrombectomy, whereas the iliac vein compression per se were treated with a self-expandable stent. In cases with fresh thrombus, the inferior vena cava filter was inserted before the thrombosis suction, mechanical thrombus ablation, percutaneous transluminal angioplasty, stenting or transcatheter thrombolysis. RESULTS: Stenting was performed in 111 patients (38 of 39 group 1 patients and 73 of 86 group 2 or 3 patients). The stenting was tried in one of group 1 and in three of group 2 or 3 patients only to fail. The initial patency rates were 95% (group 1), 89% (group 2) and 65% (group 3), respectively and were significantly different (p = 0.001). Further, the six month patency rates were 93% (group 1), 83% (group 2) and 50% (group 3), respectively, and were similarly significantly different (p = 0.001). Both the initial and six month patency rates in the IVCS patients (without thrombosis or with fresh thrombosis), were significantly greater than the patency rates of IVCS patients with non-fresh thrombosis. CONCLUSION: From the cases examined, the study suggests that endovascular treatment of IVCS, with or without thrombosis, is effective.
Adolescent ; Adult ; Aged ; *Angioplasty, Balloon ; *Balloon Dilatation ; Constriction, Pathologic/therapy ; Diagnostic Imaging ; Female ; Humans ; Iliac Vein/*pathology/surgery ; Male ; Middle Aged ; Peripheral Vascular Diseases/complications/diagnosis/*therapy ; Retrospective Studies ; *Stents ; Thrombectomy ; Vascular Patency ; Vena Cava Filters ; Venous Thrombosis/complications/diagnosis/*therapy

OBJECTIVETo evaluate various kinds of sequences and modified dynamic contrast-enhanced MRI methods in the diagnosis of pancreatic carcinoma.

METHODSForty-nine pancreatic carcinoma patients proved by histopathology or clinical examination and follow-up underwent MR examination. Plain MR sequences included: T1-weighted 2D FLASH, T1 WI 3D VIBE, TSE T2 WI and HASTE with FS. Modified dynamic contrast-enhanced scanning procedures were coronal scaning with 3D FLASH and axial scaning using T1 WI 3D VIBE sequences in turn for the upper abdominal area and pancreatic area. The coronal imaging were used to obtain 3D peripancreatic vessels during arterial phase and portal vein phase scanning, respectively. The axial imaging were used to detect the tumor in pancreatic parenchymal phase and delayed phase scanning, respectively. Final scanning for the whole upper abdomen was performed using T1 WI 2D FLASH axial sequence.

RESULTS(1) Of 49 lesions in these patients, 45 showed hypo-intensity and 4 iso-intensity on 3D VIBE. Forty-six lesions showed hypo-intensity and 3 isointensity on 2D FLASH. On TSE T2 + FS, lesion contour was not clear enough; 3 of them displayed isointensity, the other showed iso- or hyper-intensity. (2) During pancreatic parenchymal phase, 48 lesions showed hypo-intensity and 39 ring enhancement. Twenty-four lesions displayed marginal tubercle and inner compartment enhancement during portal vein and delayed phase. Six lesions showed iso- or hyper-intensity in delayed phase. (3) Thirty-seven patients underwent surgical exploration. MRI and MRA had a good correlation with surgical findings for peripancreatic vessels which were diagnosed as being invasive or noninvasive by tumors except three superior mesenteric arteries and four superior mesenteric veins being misdiagnosed.

CONCLUSIONAs"one-stop-shop" MRI examination, modified MRI sequences consisting of dynamic coronal and axial contrast-enhanced scanning is feasible and helpful in diagnosing, staging and assessing the resectability for pancreatic carcinoma.

Adenocarcinoma ; diagnosis ; pathology ; secondary ; Adult ; Aged ; Aged, 80 and over ; Cholangiopancreatography, Magnetic Resonance ; Female ; Humans ; Image Enhancement ; Imaging, Three-Dimensional ; Liver Neoplasms ; diagnosis ; secondary ; Magnetic Resonance Angiography ; Magnetic Resonance Imaging ; methods ; Male ; Mesenteric Artery, Superior ; pathology ; Middle Aged ; Neoplasm Invasiveness ; Pancreatic Neoplasms ; diagnosis ; pathology ; Reproducibility of Results ; Sensitivity and Specificity

OBJECTIVETo study the role of PCR technique in detection of mycobacterium tuberculosis in the samples from joint tuberculosis, and to evaluate the clinical value of PCR in diagnosis of joint tuberculosis.

METHODSFrom June 1993 to August 2001, PCR was used to detect DNA of mycobacterium tuberculosis, and the standard culture was applied to detect mycobacterium tuberculosis. Mycobacterium tuberculosis were respectively blindly by the two techniques in the samples obtained from 95 patients with joint tuberculosis (55 males and 40 females, the age ranging from 2 to 75 years, with an average of 34 years). The positive rate of mycobacterium tuberculosis detection was calculated.

RESULTSIn the detection of mycobacterium tuberculosis, positive rate was 82% (78/95) in PCR technique, and 16% (15/95) in standard culture technique. There were statistical differences between the two groups (chi2=67, P<0.001). The whole process of PCR amplification was automatic and could be finished within several hours, and the detecting time was considerably shorter.

CONCLUSIONPCR technique is a rapid, simple, sensitive and specific method for detection of mycobacterium tuberculosis in the samples of joint tuberculosis, showing more marked advantages than the standard culture technique. It is valuable in the early rapid diagnosis and differential diagnosis of joint tuberculosis.

Adolescent ; Aged ; Child ; Child, Preschool ; Culture Techniques ; methods ; Female ; Humans ; Male ; Middle Aged ; Mycobacterium tuberculosis ; genetics ; isolation & purification ; Polymerase Chain Reaction ; methods ; Tuberculosis, Osteoarticular ; diagnosis ; microbiology ; Young Adult