Objective To investigate the distribution and drug resistance state of Pseudomonas aeruginosa, so as to offer reasonable experimental data for clinical therapy. Methods A statistic analy- sis for the specimen souree, distribution of infected departments and drug resistance state to 441 iso- lates was conducted in a retrospective way. Results Among 441 strains, 357 (80. 95%) were isolated from sputum species. The department with the highest isolating rate was ICU (26.5%), followed by department of respiratory disease (20. 63 %), department of neurosurgery (19.05 %) and department of geriatrics (17. 01%). The most sensitive antibiotic was Meropenem, which total drug resistance rate was 13. 61%; the most insensitive antibiotic was ampicillin-sulbactam, which total drug resistance rate was 91.38%. The drug resistance rate of P. Aeruginosa was increasing year by year. Conclusion Clinical isolates of P. Aeruginosa mostly come from sputum samples and ICU, and they are highly and multidrug resistant to various antibiotics.

Adult ; Aneurysm, Dissecting ; Carotid Artery, Common ; Humans ; Male

Objective To study the diagnostic value of serum α-L-fueosidase (AFU), transforming growth factor alpha(TGF-α)and ferritin (Fer) in primary hepatic carcinoma (PHC). Methods AFU and Fer in the serum were studied in 36 patients with benign hepatism and 56 patients with low concentration AFP of PHC hepatic carcinoma by automatic biochemistry analyzer Roche Modular. ELISA was used to assay the degree of TGF-α The sensitivity and specificity of AFU, TGF-α and Fer for low expression AFP of PHC were evaluated by ROC curve. Results The serum AFU, Fer and TGF-α levels were all significant difference in the patients than those in controls (P <0.05). The area under ROC curve of these indexes in descending order was AFU (0.707), TGF-α (0.677) and Fer (0.592). The diagnostic sensitivity of Fer was lower than AFU and TGF-α in diagnosis of AFP lowly expression PHC. The ratio showed AFU better than TGF-α The diagnostic specificity of AFU (64 %) was higher than that of TGF-α (61%) when TGF-α and AFU was at the same diagnostic sensitivity (64 %). Conclusion AFU is more valuable than Fer and TGF-α for negative or AFP lowly expression PHC, meanwhile it has much more accuracy.

Carcinoma, Papillary ; diagnosis ; pathology ; Female ; Humans ; Jugular Veins ; pathology ; Male ; Middle Aged ; Neoplastic Cells, Circulating ; Retrospective Studies ; Thyroid Neoplasms ; diagnosis ; pathology

Aim To construct 3 D structure model of cardiac Cav1.2 channel and check its accuracy and re-liability.Methods Homology model of Cav1.2 chan-nel α1 subunit was constructed using SWISS-MODEL server.The model was submitted to an online testing server built by University of California and scored by it.The binding of Cav1.2 channel with blocker or drug was simulated by MOE software molecular docking pro-gram to check the model′s accuracy and reliability.Re-sults Both the target sequence Cav1.2 α1 C and the template sequence Cav1.1 α1 S searched by SWISS-MODEL server belonged to L-type Ca2+channel.Since the homology was 7 1.5% revealed by sequence align-ment,homology modeling was performed using automa-ted mode.L-type Ca2+ channel blockers Verapamil, Nifedipine and Diltiazem could bind to the 3 D structure model of Cav1.2 channel,while sodium channel bloc-ker TTX could not.Furthermore,active ingredient of traditional Chinese drug Praeruptorin A and Berberine could also bind to the 3D structure model of Cav1.2 channel.Conclusion The 3 D structure model of Cav1.2 channel was constructed successfully,which provides reliable materials for further studies and estab-lishes the foundation for the application of homology modeling in the study of 3 D structure prediction of ion channels.

Objective By using primary cultured mouse renal tubular epithelial cells (TECs) to develop an in vitro model of simulated ischemia-reperfusion (IR) injury.Methods The outer medulla of C57BL/6J mouse kidney was flushed and primary cultured after digestion in type Ⅰ collagenase,and then immunocytochemical staining was used to verify TECs.Primary cultured TECs were immersed in mineral oil to simulate the ischemic process,and 60 min later the whole culture medium was added to simulate reperfusion process.The cells were collected and RAN was extracted at indicated time points after medium replacement.The expression of TNF-α,IL-1β and IL-6 was detected by using real-time fluorescence quantitative RT-PCR. The culture supernatants were collected at 24 h after medium replacement for detection of the expression of cytokine protein by using ELISA.Results Primary cultured TECs were identified by cobblestone-shaped morphology and then verified by cytokeratin 18 (CK18) staining.In TECs of IR group after medium replacement the mRNA expression of TNF-α,IL-1β and IL-6 was higher than in control group.The expression of TNF-α after medium replacement was increased to a peak level at 0.5 h,about (24.45 ±6.51) times (P＜0.01 ) higher than the control group,and gradually declined thereafter.The mRNA expression of IL-1β after medium replacement kept an increasing tendency,about ( 15.27 ± 4.29) times (P＜0.05) higher than the control group at 6 h,and that of IL-6 after medium replacement was increased to a peak level at 3 h,about ( 11.19 ±4.55) times (P＜0.01) higher than the control group. In the IR group at 24 h after medium replacement,the protein expression of NF-α,IL-1β and IL-6 in the supernatants was significantly higher than in the control group.Conclusion High purity of primary cultured TECs was achieved from the outer medulla of mouse kidney by separation and digestion.The in vitro model of simulated IR in primary cultured mouse renal TECs was successfully created using paraffin oil.

ObjectiveTo investigate the effect and underling mechanism of water-soluble CO-releasing molecules (CORM-3)on the alleviation of allograft rejectionafter mouse kidney transplantation.Methods A mice kidney transplantation model was established using C.FVB-Tg (Itgax-DTR/GFP)57Lan/J or C57BL/6J (H-2Kb) mice as donors,and Balb/c (H-2Kd) mice as recipients.After donor nephrectomy,kidney was preserved in UW solution which contained CORM-3 or iCORM (inactive CO-releasing molecules) for 24 h in 4℃.Recipient survival after removal of both na? ve kidneys,serum creatinine as well as graft histology was observed.In the C.FVB-Tg(ItgaxDTR/GFP) 57Lan/J donors,rDCs were acquired in vitro and selected by magnetic cell sorting (MACS) after graft nephrectomy.The expression of activation markers,CD80 and CD86,on rDC was assessed by using flow cytometry.ResultsThe graft medium survival time was 40.5 days in the iCORM group and 70 days in the CORM-3 group respectively (P＜0.05).CORM-3 preserved the graft function as shown by significantly lower serum creatinine (P＜0.05; or P＜0.01) and alleviated graft pathology injury.Diffuse infiltration of mononuclear cells in the interstitial tissues,moderate tubulitis and partial glomerular sclerosis were found in the iCORM graft kidney,while the CORM-3 graft kidney displayed almost normal histology.Meanwhile,CORM-3 suppressed the expression of CD80 and CD86 in donor-derived rDC.ConclusionCORM-3 can alleviate allograft rejection,prolong the graft survival,and improve kidney function in mouse kidney transplantation,probably via inhibiting rDC activation.

Objective To discuss the diagnosis and treatment of renal pelvic carcinoma associated with renal stone.Methods A total of 13 patients,aged from 49 to 73 years old and averaged 59years old.The history of renal stone was 16 years.13 patients accepted B ultrasound check and 1 was found soft tissue occupying.8 patients accepted IVU check and none was found soft tissue occupying.7 patients accepted CT scan and 4 were found soft tissue occupying.The fluorescence in situ hybridization (FISH) examination was done for 2 patients and both were positive.6 patients were found lesions at renal pelvis mucous membrane during the operation of percutaneous nephrolithotripsy,4 accepted radical operations of renal pelvic carcinoma and 2 patients accepted radical nephrectomy according to the biopsy pathology.4 were found soft tissue occupying before operation and accepted radical operation of renal pelvic carcinoma ultimately.1 patient suffered gross hematuria and renal insufficiency accepted the renal pelvic carcinoma vaporization under the ureteroscope.Results The pathology showed that 7 cases were transitional cell carcinoma,4 were transitional cell carcinoma combined squamous cell carcinoma (SCC) metaplasia and 2 were squamous cell carcinoma.6 of 8 patients' stone chemical composition were infection stone and 2 were calcic blended stone.3 patients were followed up 1 to 2 years and survival with no tumor recurrence.The tumor recurred 10 months of the patient accepted the operation of renal pelvic carcinoma vaporization and accepted vaporization again.1 patient bsuffered SCC and local lymph node metastasis.He died 13 months post-operation.Conclusions For the patient who had long history of stone,combining infection with symptoms of severe hematuria and postoperation hematuria,the possibility of renal pelvic carcinoma should be considered.CT scan and urine FISH may help for diagnosis.The biopsy should routinely perform for the doubtful mucosa lesion during the cavity stone operation.Early and timely diagnosis and operation is the key for the patients with pelvic carcinoma associated with renal stone.

ObjectivesTo study the expression of lipoxygenase-12 (12-LOX) in human pancreatic adenocarcinoma and its relationship with the clinicopathological parameters.MethodsExpression of 12-LOX in pancreatic carcinoma tissue,pancreatic cancer cell lines SW1990 and PANC1,and adjacent normal pancreatic tissue was detected by using immunohistochemistry,RT-PCR,and Western blot,respectively.The relationship between 12-LOX expression and clinicopathological parameters was analyzed.ResultsExpression of 12-LOX was negative in 8 cases,weak positive in 7 cases and strong positive in 15 cases of pancreatic carcinoma.The overall positive rate in pancreatic carcinoma was 73.3％.The expressions of 12-LOX mRNA and protein were positive in pancreatic cancer cell lines SW1990 and PANC1,and negative in adjacent normal pancreatic tissue.The strong positive expression of 12-LOX in pancreatic cancer was associated with TNM stage,pathological grade,lymph node metastasis (P ＜ 0.05 ).ConclusionsThe expression of 12-LOX was up-regulated in pancreatic cancer and is correlated well to malignant behaviors of tumor.

Objective To study the changes of T lymphocyte subtype levels and serum levels of leukotriene B4 ( LTB4 )in children with acute leukemia (AL). Methods The activity of T lymphocyte subsets:CD3+ T cells,CD4+ T cells,CD8 + T cell levels and NK cell were detected in 40 cases of AL and 40 control by Flow Cytometry(FCM). The serum level of LTB4 was measured by ELISA in all subjects. ResultsCompared with normal control , the percentages of CD3 + T cells ( [ 49.51 ± 6.53 ] ％ vs [ 67.63 ± 5.23 ] ％ ), CD4 + T cells ([22.15±4.87]％ vs [34.43 ±5.07]％),CD8+ T cell ([23.41 ±3.96]％ vs [28. 17 ±4.61]％),NK cell ( [5.41 ± 4.25 ] ％ vs [ 13.10 ± 4.91 ] ％ ) were significantly lower in children AL patients, ( Ps ＜0.01 ). However,the serum levels of LTB4 increased significantly in AL patients compared with normal control ( [ 25.23 ± 6.24 ] ng/L vs [ 8.28 ± 2.53 ] ng/L, P ＜ 0.01 ). ConclusionT lymphocyte subtype and serum level of LTB4 showed significant changes in children AL patients compared with normal control, which revealed an important theoretical basis to AL pathogenesis.