Objective To investigate the change of MMP-9,TIMP-1,ICAM-1 and VCAM-1 expression in serum from patients with COPD,as well as the correlation between the expressions of these factors and lung function.Methods Enzyme-linked Immunosorbent Assay(ELISA)was used to determine the levels of MMP-9,TIMP-1,ICAM-1 and VCAM-1 in serum from 58 patients with COPD and 30 samples from healthy donors in order to better understand the correlation between the expression of these factors and airflow obstruction.Results The serum levels of MMP-9,TIMP-1,ICAM-1 and VCAM-1[(128.89?115.84),(228.28?107.13),(203.98?70.37) and (352.98?117.73)?g/L]from patients with COPD were statistically and significantly higher than the control group[(30.65?18.43),(133.69?41.41),(148.35?23.77) and (233.57?36.65)?g/L],P

Objective To investigate the effect of estrogen on regression of vascular calcification in rats induced by vitamin D3 plus nicotine.Methods Ninety-six female SD rats were divided randomly into control group (n=24) and calcification group (n=72).Vascular calcification of 72 rats was induced by vitamin D3 and nicotine (VDN).On the day 1,the VDN group rats were injected with vitamin D3(300 000 U/kg,i.m),and were intragastric administrated with nicotine (25 mg/kg),after 9 hours,another dosage of nicotine was given again.After 4 weeks,the VDN group rats were subdivided randomly into 4 groups:VDN group(n=16),Sham operation group (n=16),ovariotomy group (n=16),estrogen group(after ovariotomy,17β-estrogen was subcutaneously injected,50 μg· kg-1· d-1,n=16).Results After 4 weeks,the VDN group showed obvious vascular calcification,and calcium content of the vessel wall was significantly higher than that of control group (P＜0.01).Extensive calcification was witnessed on the aortic tunica media of the VDN group.After 12 and 8 weeks,the calcium content of the vessel wall in each subdivided groups was significantly lower than that at 4 weeks point(P＜0.01),and the lowest calcinm content was in estrogen group,meanwhile the reduction of previously accumulated arterial calcium precipitate in each group was different.Conclusions It is a reversible process that vascular calcification induced by vitamin D plus nicotine in rats.Estrogen can promote the regression of vascular calcification.

Ginseng root saponins ( GRS ) was extracted from native ginseng.The dosage used was calculated according to the content of saponins.Immunosuppression in mice was induced in 15 days after implar- ting Ehrlich ascites carcinoma (EAC) subcutaneously in armpit, and in 5-11 days after implanting EAC into peritoneal cavity. GRS administered orally 50mg/kg- for 8 days did not prevent the atrophy of the thymus in tumor-bearing mice but rather aggravated it. GRS administered orally 50mg/kg for 14 days partially restored the suppressed phagocytosis of peritoneal macrophages in tumor-bearing mice. GRS administered orally 50mg/kg for 6 days somewhat restored the suppression of hemolysin formation in tumor-bearing mice 5 days after implanting EAC, But GRS given in the same route and dosage for 9 days, showed no effect on the suppression of hemolysin formation. GRS administered orally 50mg/kg for 10 days partially restored the suppression of delayed hypersensitive reaction in tumor-bearing mice.

OBJECTIVE: To investigate the diagnosis of frontal, ethmoid sinus cyst with eye symptoms as initial amount,and the curative effect of nasal endoscopic operation. METHOD: To retrospectively analyze clinical data of sixteen patients with frontal, ethmoid sinus cyst from February 2006 to March 2008. RESULT: Diagnostic accordance rate of paranasal sinus MRI and CT examination In 16 patients is 100%. Fourteen patients' ocular symptoms disappeared after nasal endoscope operation treatment, two of them improved. None of them recurrened after the fol low-up 3-6 years up to now, all the patients had satisfactory curative effect. CONCLUSION Paranasal sinuses and or bital cavity have close relationship , patients with sinus lesions always firstly visit Ophthalmology doctor. The results of MRI and CT examination are of great value for diagnosis. Patients with frontal, ethmoid sinus cyst with eye symptoms as initial amount should be early diagnosed. The treatment of nasal endoscope operation is safe, effective and is worth of firstly chosen.
Cysts ; diagnosis ; surgery ; Endoscopy ; methods ; Ethmoid Bone ; Ethmoid Sinus ; Female ; Frontal Sinus ; Humans ; Magnetic Resonance Imaging ; Male ; Nasal Surgical Procedures ; Paranasal Sinus Diseases ; diagnosis ; surgery ; Retrospective Studies

Objective To compare the clinical effect of the two surgical methods of posterior pedicle screw fixation decompression in treatment of thoracolumbar burst fractures,and in order to provide the basis for choosing the rational treatment.Methods Retrospectively analyzed the clinical data of 98 patients with thoracolumbar burst fractures underwent surgery of posterior pedicle screw fixation decompression from January 2007 to January 2011.Fifty-six patients were given posterior fixed indirect decompression surgery (indirect decompression group) and 42 patients were given posterior fixed direct decompression (direct decompression group).The patients were followed up for (1.03 ± 0.36) years after surgery,the image,recovery of neurological function,postoperative complications and capacity for independent living of the two groups were compared and evaluated.Results After surgery,the vertebral height ratio,Cobb angle,canal compromise rate in indirect decompression group were (91.67 ± 26.19)％,(10.10 ± 2.89)°,(18.61 ±5.32)％,in direct decompression group were(86.23 ± 24.64)％,(11.98 ± 3.42)°,(22.37 ± 6.39)％.There was significant difference compared with before surgery (P ＜ 0.05) and no significant difference between two groups (P ＞0.05).After surgery,the neurological function of the two groups were improved,and the improvement in indirect decompression group was better than that in direct decompression group (P ＜ 0.05).The postoperative complications ratio in indirect decompression group was 23.2％ (13/56),significantly lower than that in direct decompression group[83.3％(35/42)](x2 =10.370,P＜ 0.01).There was 60.7％(34/56)patients with capacity for independent living in indirect decompression group,significantly higher than that in direct decompression group [40.5％ (17/42)] (x2 =4.329,P ＜ 0.05).Conclusion The posterior pedicle screw fixation indirect decompression in treatment of thoracolumbar burst fractures is a feasible operation method,and is worth to utilize in clinic.

The clinical data of 32 patients with pyelogenic cyst were reviewed retrospectively. The diagnosis of 25 cases was confirmed by intravenous pyelography (IVP) , in which the ultrasonography and computed tomography ( CT) failed to provide accurate diagnosis. Eighteen cases were treated by surgical operations, among them 16 cases were cured, one case lost follow-up, and one case recurred in 6 months after surgery. The data indicate that the diagnosis of pyelogenic cyst mainly depends on IVP examination and the laparoscopic technique can be effectively applied for treatment of pyelogenic cyst.

The clinical data of 16 patients with rupture of corpus cavernosum penis were retrospectively reviewed.The patients were referred to the Department of Urology from January 2005 to November 2009.The causes of penile injury were trauma due to sexual intercourse ( 12 cases), trauma due to masturbatory (2 cases), traffic accidents ( 1 case) and others ( l case).All patients received immediate surgical treatment; 14 out of 16 patients were followed up for a mean period of 3 months.Sexual function was recovered with satisfactory erection in 11 patients, 3 patients complained pain or uncomfortab]eness during erection.Sexual trauma was the main cause of penile fracture.Immediate intervention for penile fracture can achieve satisfactory early and late results.

Objective To understand genetic distribution, drug resistance, molecular typing and the epidemiological relativeness between strains of the Shigella boydii virulence. Methods Nine Shigella boydii strains were isolated form stool samples of patients with diarrhea from the Enteric Disease Clinic of the Second Hospital of Tianjin Medical University in June-October 2015. The strains were identified by biochemical test and serum agglutination test. Antibiotics susceptibility test was carried out using the Kirby-Bauer method. Polymerase chain reaction was used for detecting virulence genes. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) technique were used to determine the epidemiological relationship between nine Shigella boydii strains. Results There were three subtypes in nine isolated Shigella boydii samples, including one, three and five isolates inⅠ,Ⅱ,Ⅳsubtypes respectively. All of the 9 isolates were multi-drug resistant. The resistant rate of these strains for ampicillin was 100%(9/9), and then the resistant rates of these strains for ceftazidime, streptomycin, gentamicin, trimethoprim/sulfamethoxazole, cefotaxime, ceftriaxone, norfloxacin and levofloxacin were 1/9, 4/9, 4/9, 4/9, 5/9, 5/9, 6/9, 6/9 and 6/9, respectively. All of these strains were sensitive to amikacin, cefperazone-sulbactam and imipenem. The ipaH was carried by all the testing strains, and none of the strains carried the sen, set1A, set1B, ial, virA, icsA and SigA. The detective rates of pic, sepA and sat were 4/9, 5/9 and 7/9 strains, respectively. Nine shigella boydii strains were divided into 8 PFGE types. The similarity between the spectrums of PFGE was 63.21%-100%. Multilocus sequence typing showed that six isolates were belonged to ST648, two isolates were ST131 and one isolate was ST10. Conclusion Nine isolates of Shigella boydii (divided into three subtyping) isolated from our hospital are multi-drug resistant and they have distant relationships, belonging to the dissemination of case.

Objective To determine the differentially expressed genes in the development of vascular medium calcification in rats using the suppression subtractive hybridization (SSH). Methods Twenty-four 6-week old SD rats of specific pathogen free grade were recruited and randomly allocated into calcified group (n=12) and control group (n=12). Rats were made for vascular calcification model in calcified group (vitamin D3 plus nicotine, VDN). All rats were sacrificed to measure concentration of calcium in the arterial tissue and examine the pathological lesion changes. RNA in rat aortic tunica tissue was extracted and reverse transcripted into cDNA. cDNA fragments which highly expressed calcification were isolated in calcified group using the SSH. Differentially expressed genes with cDNA fragment were inserted into PMD18-T plasmid vector and transformed to competent DH-5α by means of heating transfer. cDNA libraries of differentially expressed gene between calcified group and control group were successfully constructed. Recombinant vectors were analyzed by colony PCR. Positive genes were randomly selected for sequencing and analyzed by BLAST. Six genes, for example, were randomly selected for RT-PCR certification. Results (1) The pathological examination results demonstrated that in calcified group there were obvious calcium diposits and media squirm in tunica media of rat aortic wall, while in control group no calcium diposit was found. (2) There was statistical significance in calcium concentration in vascular tissue between calcified group[(15.34 ± 2.51)mg/g] and control group [(5.20 ± 0.75) mg/g] (P＜0.01). (3) Subtracted libraries in vascular calcification was successfully established. Ninety-two positive clones in positive library and 18 positive clones in reverse library were obtained after the colony PCR identification. The length of insertion fragments was concentrated between 150 bp and 400 bp. Calcification-related 43 up-regulated genes and 11 down-regulated genes were obtained through sequencing and BLAST analysis in positive clones. RT-PCR validation indicated that the expressions of 5 genes such as CytoP450 and Nell1 had greater increase in calcified group than those in control group, the average fold change was 1.71.Conclusions Model of vascular calcification induced by vitamin D3 plus nicotine is successfully constructed. Related gene expression spectrum is changed in the process of vascular calcification.Some ossification genes and genes associated with apoptosis, oxidation, inflammation and cytokines are up-regulated. At the same time, some genes which possibly inhibit vascular calcification are down -regulated.

To solve the problem of cardiac arrhythmias classification, we proposed a novel algorithm based on the multi-feature fusion and support vector machines (SVM). Kernel independent component analysis (KICA) was used to extract nonlinear features and wavelet transform (WT) was used to extract time-frequency features. Combining these features could include more information about the disease. We designed the classification model based on SVM combined with error correcting output codes (ECOC). Receiver operating characteristic curve (ROC) and Area Under the ROC curve (AUC) value were used to assess the classification model. The value of AUC is 0.956 against MIT-BIH arrhythmia database. Experimental results showed effectiveness of the proposed method.
Algorithms ; Area Under Curve ; Arrhythmias, Cardiac ; classification ; diagnosis ; Electrocardiography ; methods ; Humans ; Principal Component Analysis ; ROC Curve ; Signal Processing, Computer-Assisted ; Support Vector Machine