OBJECTIVEThe aim of the present study is to explore the effects of exhaustive exercise-induced oxidative stress on the antioxidant capacity and diformability of rat red blood cells.

METHODSRats were divided into three group (n = 10): sedentary control (C), exhaustive running exercise (ERE) and moderate running exercise (MRE) groups. Animals in the ERE group started treadmill running at a speed of 20 m/min speed with a 5% gradient, and reached a speed of 25 m/min with gradient 15% in 20 min. Running was continued until exhaustion. MRE group rats running at a speed of 20 m/min with a 5% gradient for 40 min. The levels of free thiol in erythrocyte membrane protein, lipidperoxidation levels and membrane protein components were analyzed. The red blood cell deformability of different groups was also observed.

RESULTSThe results showed that red blood cells were damaged by severe oxidative stress and the anti-oxidative capacity decreased significantly under exhaustive exercise conditions. Besides, lipid peroxidation and protein sulfhydryl cross-link based clustering of membrane were found after exhaustive exercise, and polymers high molecular weight (HMW) was formed. The elongation index (EI) was found to decline significantly in the ERE group compared with the C and MRE groups under shear stress (control group, 0.41 +/- 0.01 at 3 Pa and 0.571 +/- 0.008 at 30 Pa; ERE group, 0.314 +/- 0.013 at 3 Pa and 0.534 +/- 0.009 at 30 Pa; P < 0.05 and P < 0.01, respectively).

CONCLUSIONThese exercise-induced oxidative injure result in a significant decrease in deformability of rat erythrocytes, which in turn leads to dysfunction in the microcirculatory.

Animals ; Disease Models, Animal ; Erythrocyte Deformability ; Fatigue ; metabolism ; physiopathology ; Male ; Oxidative Stress ; Physical Conditioning, Animal ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo explore the lower urinary tract symptoms (LUTS), especially those in the urinary storage phase, following transurethral resection of the prostate (TURP), and to improve the postoperative management and patients' quality of life after TURP.

METHODSA total of 86 patients with benign prostate hyperplasia (BPH) underwent TURP, and were interviewed on urinary symptoms at 1, 3, 7, 15 and 30 days after removal of the catheter. The patients were divided into two groups according to whether they had preoperative detrusor instability and/or compliance of the bladder (Group A) or not (Group B), and observed for the changes in IPSS scores and urinary storage symptoms after removal of the catheter.

RESULTSComplete follow-ups were achieved in 71 cases, 28 with detrusor instability and/or compliance of the bladder and the other 43 without. Their IPSS scores on the 1st, 3rd, 7th, 15th and 30th day after removal of the catheter were 8.1 +/- 2.5, 7.2 +/- 3.1, 6.3 +/- 3.8, 5.3 +/- 4.2 and 2.4 +/- 3.4, respectively, with statistically significant differences between the 7th and the 1st as well as the 30th and the 15th day (P < 0.05), but not between the 1st and the3rd nor the 15th and the 7th day (P > 0.05). On the 1st day, the cardinal symptoms in the urinary storage phase were urinary frequency, urgency and incontinence; the scores on IPSS and urinary storage symptoms were 10.4 +/- 3.3 and 9.3 +/- 3.8 in Group A and 6.2 +/- 2.8 and 5.2 +/- 2.7 in Group B, with significant differences between the two groups (P < 0.05). After treatment with tolterodine and alpha-adrenoreceptor inhibitor, neither IPSS scores nor the scores on urinary storage symptoms showed any significant differences between Groups A and B on the 15th and 30th day (P > 0.05).

CONCLUSIONThe lower urinary tract symptoms following TURP, especially those in the urinary storage phase, are correlated with preoperative bladder function, and getting improved gradually after surgery.

Aged ; Aged, 80 and over ; Humans ; Male ; Middle Aged ; Postoperative Period ; Prostatic Hyperplasia ; physiopathology ; surgery ; Quality of Life ; Transurethral Resection of Prostate ; Treatment Outcome ; Urinary Incontinence ; etiology

Objective To understand healthcare-associated infection(HAI)in group burn/trauma patients,and explore its risk factors.Methods HAI occurred among 25 hospitalized patients with group burn/trauma during a bus deflagration event on May 12,2014 were monitored and analyzed.Results Of 25 burn/trauma patients,7 de-veloped 10 times of HAI,incidence and case incidence of HAI were 28.00% and 40.00% respectively;the main in-fection sites were wound and lower respiratory tract,accounting for 60.00% and 30.00% respectively.30 strains of pathogens were isolated from 7 patients with HAI,including 16 strains (53.34%)of gram-negative bacteria,13 strains(43.33%)of gram-positive bacteria,and 1 fungus (3.33% ).Risk factors for HAI were large burned area, high degree of inhalation injury,arteriovenous catheterization,urinary tract catheterization,tracheotomy,use of ventilator,and surgery.Conclusion Incidence of HAI is high in the group burn/trauma patients,corresponding in-tervention measures should be formulated according to the risk factors,so as to reduce the occurrence of HAI.

Objective To evaluate the imaging methods,characteristics,diagnostic value of multi- slice CT urography(MSCTU)in congenital abnormities of urinary system.Methods To collect 33 urinary congenital abnormities cases in three years and to analyses these MSCTU images.All examinations were performed with a multi-slice spiral CT scanner.The patients were intravenously injected with 90 ml of Iohexol 300 with a power injector at the rate of 3 ml/s.Nephrographic-phase images were obtained at 75 s after initiation of the injection of contrast material,the appropriate delay time is according to Kidney's enhancement extent and nephrohydrosis degree.Excretory-phase images were obtained through the abdomen and pelvis from 10 min.to 23 h after initiation of the injection of contrast material without abdominal compression.Excretory-phase images were transferred to the workstation and performed maximun intensity projection(MIP),multiplanar reconstruction(MPR),volume rendering(VR),and virtual cystoscopy (VC).Results The urinary congenital abnormities diagnosed by MSCTU in 33 cases,including 1 ectopic kidney,1 horseshoe kidney,1 renal malrotaion,2 supernumerary kidneys,2 ureteral valves,2 retrocaval ureters,4 congenital megaureters,6 ureteropelvic junction stenosis,9 pelviureteric duplication malformations and 5 bladder diverticula.The displaying rate of ureter was 91%(61/66).The scanning time of excretory-phase was less than 20 seconds in All cases.The average CT value of contrast media in displayed ureter lumens was 520 HU.The postprocessing images had clear,dimensional feature and It was satisfy the diagnosis.Conclusion MSCTU has clear,dimensional feature and has strong ability of displaying total anatomy shape and tiny pathology change of congenital abnormities in the urinary system.It is a very useful method for detecting the congenital abnormities in the urinary system.

Objective To study the reliability and validity of Chinese version of SF-36 survey in the quality of life assessment among nurses group in Shenzhen.Methods From September to October 2010, clinical first-line registered nurses working in upper second class and above in Shenzhen were investigated by the medical outcomes study 36-item short-form health survey, and then internal consistency reliability, split-half reliability, the correlation analysis, factor analysis, et al were used to evaluate the reliability and validity of the scale.Results The Chinese version of SF-36's split-half reliability was 0.77 .The Cronbach's α coefficient of internal consistency was 0.91. Cronbach's α coefficient of 8 domains ranged from 0.69~0.80. Eight principal components were extracted by factor analysis and the constructs of the instrument obtained were consistent with the conceived concept in essence.Conclusions The SF-36 survey could measure the quality of life for nurses group in Shenzhen with better reliability and validity, so it has practical value to some certainty.

OBJECTIVEHyperglycemia could upregulate transforming growth factor-beta (TGFbeta(1)) via thrombospondin (TSP-1) and induce fibrotic renal disease in the rat in vivo and myocardial fibrosis was related to cardiac dysfunction in diabetic patients. We explored the role of glucose/TSP-1/TGFbeta(1) signal pathways in the development of diabetic cardiomyopathy (DCM).

METHODSMale Wistar rats were fed with high cholesterol diet for 17 weeks, streptozocin (30 mg/kg, i.p) was given at the 28th day, rats with fasting blood glucose > or = 11.1 mmol/L by the end of the 5th week were assigned to DCM group (n = 11). Control rats (n = 8) were fed with regular chow. Fasting blood glucose (FBG) was monitored throughout the study. After hemodynamic measurements by the end of the study, myocardial collagen content was quantified in Masson-stained samples and the mRNA expressions of TSP-1 and TGFbeta(1) were detected by quantification real-time RT-PCR. The protein levels of TSP-1, active and latent TGFbeta(1) were detected by Western blot.

RESULTSCompared with control group, cardiac function was decreased as shown by significantly reduced left ventricular systolic pressure, dp/dt(max) and dp/dt(min), while the myocardial collagen content was significantly increased in the DCM group (11.01 +/- 3.05 vs. 16.92 +/- 3.18, P < 0.01). The myocardial mRNA expressions of TSP-1, TGFbeta(1) and protein expressions of TSP-1, active and latent TGFbeta(1) in the DCM group were also significantly higher than those of the control group. Moreover, myocardial collagen was positively correlated to FBG (r = 0.746, P < 0.01); mRNA expressions of TSP-1 and TGFbeta(1), protein expressions of TSP-1 and active TGFbeta(1) were positively correlated to FBG and myocardial collagen (P < 0.05). However, there were no correlations between the protein expression of latent TGFbeta(1) and FBG and myocardial collagen.

CONCLUSIONThe pathway of glucose/TSP-1/TGFbeta(1) might play an important role in myocardial interstitial fibrosis of DCM. It may be the basis of novel therapeutic approaches for ameliorating DCM.

Animals ; Cardiomyopathies ; etiology ; metabolism ; Diabetes Mellitus, Experimental ; complications ; metabolism ; Glucose ; metabolism ; Male ; Myocardium ; metabolism ; Rats ; Rats, Wistar ; Signal Transduction ; Thrombospondin 1 ; metabolism ; Transforming Growth Factor beta1 ; metabolism

OBJECTIVETribbles, a protein family controlling mitogen-activated protein kinase cascades, might contribute to the remodeling process in dilated cardiomyopathy. We investigated the gene expression of Tribble 3 (TRB(3)), cardiac function and collagen changes in rats with diabetic cardiomyopathy (DCM) and the modulating effects of valsartan on them.

METHODSMale Wistar rats were fed with high cholesterol diet throughout the study period, streptozocin (30 mg/kg, i.p) was given at the 28th day, valsartan (30 mg.kg(-1).d(-1), n = 13) or placebo (n = 11) was administered at the 35th day to rats with fasting blood glucose > or = 11.1 mmol/L per gavage for another 12 weeks. Control rats (n = 8) were fed with regular chow. Fasting blood glucose was monitored throughout the study, left ventricular function was determined by echocardiography, myocardial collagen content quantified after Masson-staining and myocardial mRNA expression of TRB(3) detected by quantification real-time RT-PCR at the end of study.

RESULTSCardiac function was significantly improved (EF: 74% +/- 10% vs. 66% +/- 7%, P < 0.05), myocardial collagen content decreased (13.23 +/- 3.14 vs. 16.92 +/- 3.18, P < 0.05) in rats with DCM treated with valsartan. Moreover, TRB(3) mRNA was significantly increased in rats with DCM compared to control rats (0.0198 +/- 0.0082 vs. 0.1108 +/- 0.0933, P < 0.05) and the increase could be significantly attenuated by valsartan (0.0367 +/- 0.0234, P < 0.05 vs. DCM). A significant positive correlation was observed between myocardial TRB(3) mRNA and myocardial collagen content (r = 0.67, P < 0.05) and between TRB(3) mRNA and fasting blood glucose (r = 0.69, P < 0.05) in rats with DCM.

CONCLUSIONOur results show for the first time that myocardial TRB(3) mRNA is upregulated in rats with DCM and which could be down-regulated by valsartan.

Animals ; Cardiomyopathy, Dilated ; metabolism ; physiopathology ; Diabetes Mellitus, Experimental ; Gene Expression ; Male ; Protein Kinases ; metabolism ; Protein-Serine-Threonine Kinases ; antagonists & inhibitors ; RNA, Messenger ; metabolism ; Rats ; Rats, Wistar ; Tetrazoles ; pharmacology ; Valine ; analogs & derivatives ; pharmacology ; Valsartan

OBJECTIVETo summarize the clinical changing characters of the clinical markers after interferon treatment in chronic hepatitis B (CHB) and make out practical indexes to predict the effect.

METHODS150 CHB patients were randomly divided into two groups: therapeutic group (90) and control group (60) in the prospective controlled trial. The levels of endogenous interferon before treatment, interferon antibody at the end of the second month and fourth month after treatment, alanine aminotransferase (ALT) and HBV DNA in the serum were detected. Then the data was analysed to find out indexes for predicting the effect.

RESULTS(1) The clearance rate of HBeAg had no significant difference in age except for 20 - 30 and 30 - 40 (t > 2.331 2, P < 0.01). (2) It was more effective if ALT level was higher than 400 U/L before treatment and it decreased more than 50% two months after treatment. (3) The patients whose HBV DNA was negative (dot hybridization) or less than 10(6) copies/ml before treatment had higher rate of HBeAg clearance. (4) There was no effect on patients whose interferon antibody turned positive at the end of the second month. (5)A predictive method of comprehensive factors was made out, whose sensitivity, specificity, and accuracy were 80%, 100% and 90%, respectively.

CONCLUSIONThe clinical characters of these Chinese patients are different from those of the westerners and the effects of interferon have close relation to the levels of ALT, HBV DNA and interferon antibody.

Adjuvants, Immunologic ; administration & dosage ; therapeutic use ; Adolescent ; Adult ; Alanine Transaminase ; blood ; Aspartate Aminotransferases ; blood ; DNA, Viral ; blood ; Female ; Hepatitis B Antibodies ; blood ; Hepatitis B virus ; isolation & purification ; Hepatitis B, Chronic ; drug therapy ; physiopathology ; Humans ; Interferon-alpha ; administration & dosage ; therapeutic use ; Male ; Prospective Studies

Objective To investigate the diagnostic value of aortocranial DSA in collateral circulation in elderly patients with serious stenosis or occlusion of the internal carotid artery. Methods Twenty-three elderly patients with serious stenosis or occlusion of the internal carotid artery, admitted to our hospital from August 2008 to July 2010, were chosen; their DSA findings and prognoses were retrospectively analyzed. Results Of these 23 patients, the collateral circulation was seen in 18(78.3%), including compensations from anterior communicating artery (n=16), posterior communicating artery (n=6), anterior together with posterior communicating artery (n=3), anterior choroidal artery (n=5),meningina artery between anterior cerebral artery and posterior cerebral artery (n=5), meningina artery between posterior cerebral artery and middle cerebral artery (n=4), ophthalmic artery (n=15), blood vessel between posterior cerebral artery and superior cerebellar artery (n=3), and blood vessel among superior cerebellar artery, anterior inferior cerebellar artery and posterior inferior cerebellar artery (n=2); after conservative treatment and long time follow-up (1 to 22 months with a mean of 11.2 moths),disappearance of clinical symptoms and no recurrence were found in these 18 patients. Five patients were noted without compensatory collateral circulation: the 2 paralysis patients could not take care of themselves even with the improvement of myodynamia from grade 0 to grade Ⅲ; the 2 patients with disturbance of consciousness showed no recovery and died from lung infection; the left 1 patient was having aphasia. Conclusion DSA can accurately define ways and compensative ability of collateral circulation in elderly patients with serious stenosis or occlusion of the internal carotidartery, which can put forward reliable evidences for their treatments and prognoses.

OBJECTIVEGastrointestinal stromal tumors (GISTs) have a broad spectrum of biological behaviors ranging from benign, borderline and malignant. This study aimed to screen differentially expressed microRNAs (miRNAs) between malignant and borderline GISTs and to investigate the potential role of miRNAs in the malignant transformation of GISTs.

METHODSSix GIST samples including borderline tumors (n = 3) and malignant tumors (n = 3) were collected based on the clinical and pathological characteristics. Total RNA was extracted, followed by miRNA microarray analysis to screen the differentially expressed miRNAs. The most significantly expressed 4 miRNAs were then chosen for further validation by real-time PCR in 22 additional GIST samples.

RESULTSDirect comparison of malignant group versus borderline group revealed 14 significantly and differentially expressed miRNAs (P < 0.05, with a fold change of < 0.5 or > 2). Five miRNAs were up-regulated and nine were down-regulated in the malignant group. Four miRNAs (miR-221, miR-135b, miR-675(*) and miR-218) were most significantly and differentially expressed between the two groups. The differential expression of 2 miRNAs (miR-221 and miR-675(*)) were subsequently confirmed with good concordance by real-time PCR.

CONCLUSIONSThe differential miRNA expression profiles between two groups are revealed by miRNA microarray assay, and confirmed by real-time PCR. Among differentially expressed miRNAs, miR-221 and miR-675(*) might be related to the malignant transformation of GISTs, and have a potential value in predicting biological behavior of GISTs.

Adult ; Aged ; Aged, 80 and over ; Cell Transformation, Neoplastic ; Down-Regulation ; Female ; Gastrointestinal Neoplasms ; genetics ; pathology ; Gastrointestinal Stromal Tumors ; genetics ; pathology ; Gene Expression Profiling ; Humans ; Male ; MicroRNAs ; genetics ; metabolism ; Microarray Analysis ; Middle Aged ; Real-Time Polymerase Chain Reaction ; Up-Regulation