Objective To investigate the clinical characteristic and prognosis of nonsteroidal antiinflammatory drugs( NSAIDs)and aspirin associated peptic ulcer bleeding. Method All patients with peptic ulcer bleeding were studied by the same researcher after admission and discharge. Results Fifty-one cases with NSAIDs and aspirin medication of the total peptic ulcer bleeding patients ( 147 cases) were included (34. 7% ). Compared with patients not associated with NSAIDs and aspirin medication, they are older [(41.2 ± 1. 9 ) years vs ( 59.4 ± 2. 2 ) years, P ＜ 0. 001], more commonly associated with hypertension ( 10. 4% vs 39. 2% ,P ＜0. 001 ), coronary heart disease ( 10. 4% vs 17.6% ,P ＜0. 001 ) ,diabetes (4. 2%vs 19. 6%, P = 0. 005 ); and had more severe anemia (7. 3% vs 23. 5%, P = 0. 008 ). Fewer patients in NSAIDs group had epigastric pain (61.5% vs 27.5%, P ＜ 0. 001 ), while there was more re-bleeding (9.4% vs 15.7%, P = 0.034). In all bleeding patients, factors associated with re-bleeding, surgical intervention and death included NSAIDs and aspirin medication, and low platelet count. In patients with NSAIDs and aspirin medication, re-bleeding was associated with previous ulcer history ( P ＜ 0. 05 ).Conclusion Peptic ulcer bleeding patients with NSAIDs and aspirin medication were more severe ill, and less likely to present with epigastric pain.

Objective To investigate the relationship between physical exercise and peak bone density.Methods Bone mineral density(BMD) was measured in 193 healthy subjects aged from 20~35 years old (87 males and 106 females) at lumbar vertebra,femoral neck ,Word’s region and greater luberosity.Exercise levels including three states of high,middle and low of them were investigated.The relationship between exercise and peak bone density was analysed.Results In male,the BMD at lumbar vertebra,femoral neck and Word’s in high level state was significantly higher than that in low and middle level states,and also higher in middle level at lumbar vertebra than that in low level state.In female,the BMD in high leval state was significantly higher at lumbar verfebra than that in low and middle level states.Conclusion Physical exercise in juvenile can increase peak bone density,it is a good way to prevent osteoporosis by exercise.

Objective To analyze the imaging features of endometrial carcinoma derived from multimodal MRI.Methods MRI scan was performed in 45 patients with biopsy-proved endometrial carcinoma,including conventional MRI,diffusion weighted imaging(DWI),dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI),and time-signal curve (TIC).Results The diagnosis rate of DCE-MRI combined with DWI was 93.3%, and that of conventional MRI was 77.8%.Tumor differentiation was negatively correlated with ADC and rADC, and significant difference was found between G2 and G3 as well as G1 and G3 (both P<0.05).There was no significant difference between G1 and G2 (P>0.05).Of the 45 cases, 43 showed TIC type Ⅰ and type Ⅱ, and 2 showed TIC type Ⅲ, while the normal myometrium was mainly type Ⅲ curve.The difference of signal intensity of each phase (D), and enhancement rate (ER) of the lesions were lower than those of the normal myometrium.The difference was statistically significant at the phase of >30 s(P<0.05),the peak time of the former was (50±10) s.Conclusion Multimodal MRI is of great value in preoperative staging and grading of endometrial carcinoma.

Objective To investigate the risk factors for poor response to treatment in juvenile-onset systemic lupus erythematosus (SLE).Methods The clinical manifestations,treatment and follow up data of the initial onset SLE patients in our hospital were collected retrospectively.According to the response to treatment after 6 months,patients were divided in two groups.One was treatment effective group,and the other was poor response group.The data of the two groups were analyzed by SPSS 16.0 Counted data were analyzed by Chi-square test.Measurement data were analyzed by t-test.The areas under ROC curve of the measurement data which had statistical significance were calculated and further Logistic regression analysis were made.Results In all of the 82 patients with first onset SLE,72 patients were in the treatment effective group and 10 were in the poor response group.Boy gender (5/10 & 12/72,x2=5.937,P=0.015),edema (10/10 & 25/72,x2=15.294,P＜0.O1) and serositis (8/10 & 25/72,x2=7.485,P=0.006),higher positive rate of Coombs' test (7/8 & 14/29,x2=3.931,P=0.047) and histological class Ⅳ or Ⅳ+Ⅴ of lupus nephritis (8/9 & 6/30,x2=14.278,P＜0.01) were more common in the poor response group.The level of hemoglobin (P=0.013),serum albumin (P=0.001) and globulin (P=0.004),creatinine clearance (P＜0.01),serum calcium (P=0.040) and immunoglobulin (P=0.006) of the patients in the poor efficacy group were lower than those of patients in the treatment effective group.The level of serum potassium (P=0.011),serum phosphorus (P=0.035),24 hours proteinuria (P=0.001) and SLEDAI (P=0.002) of the patients in the poor response were higher than those patients in the treatment effective group.The creatinine clearance was lower than 75.91 ml·min-1· 1.73 m-2,24 hours proteinuria was higher than 1 771.5 mg and SLEDAI was higher than 11.5 could be the diagnostic cutoff value to predict the poor response to treatment in juvenile-onset SLE patients.The results of Logistic regression analysis showed creatinine clearance lower than 75.91 ml ·min-1· 1.73 m-2 was the risk factor that could influence the outcome of SLE patients (P=0.043).The OR was 23.9 and 95％CI was from 1.10 to 516.8.Conclusion In juvenile-onset SLE patients,boys have poor response to treatment.The creatinine clearance lower than 75.91 ml·min 1· 1.73 m-2,24 hours proteinuria higher than 1 771.5 mg and SLEDAI higher than 11.5 can predict the poor response to treatment in juvenile-onset SLE patients.In addition,the SLE patients with autoimmune hemolytic anemia may have poor response to treatment.

AIM: To explore the effects and mechanism of interleukin-2 (IL-2) on the positive effect of isoproterenol (ISO) in the isolated rat cardiomyocytes. METHODS: Enzymatically isolated cardiomyocytes were used. Peak twitch amplitude and maximal velocity of shortening/relaxation (?dL/dt_~max ) in the isolated cardiomyocytes were recorded with a microscope coupled to a charge-coupled device camera and [Ca~2+ ]i transients were determined with a fluorometric ratio method by using Fura-2/AM as Ca~2+ indicators. RESULTS: ① ISO increased the peak twitch amplitude and ?dL/dt_~max of the isolated cardiomyocytes. Perfusion for 15 min with IL-2 at 2?103 U/L, which had no effect at all, attenuated the enhancing effect of ISO on the peak twitch amplitude and ?dL/dt_~max . ② ISO increased the [Ca~2+ ]i transients of the single ventricular myocytes in a dose dependent manner and the corresponding EC_~50 values of ISO was (0.12?0.01) ?mol/L. Perfusion for 15 min with IL-2 at 2?103 U/L, which had no effect on the ~[Ca~2+ ]i transient at all, attenuated the enhancing effect of ISO and the corresponding EC_~50 was (0.44?0.06) ?mol/L. ③ The electrically induced [Ca~2+ ]i transient was significantly increased by pretreatment with 20 mg/L cholera toxin for ~12 h. The elevation of the [Ca~2+ ]i transient induced by cholera toxin was significantly attenuated by 2?103 U/L IL-2. ④ Forskolin (1 ?mol/L), the activator of adenyl cyclase, significantly increased the electrically induced [Ca~2+ ]i transient, which was attenuated by IL-2 at 2?103 U/L. CONCLUSION: IL-2 inhibits the positive effect of isoproterenol in the isolated single ventricular myocytes, in which Gs protein and adenyl cyclase are involved. [

Objective To determine the electrical conductivity of cerebrum, liver, lung and muscle of rats at different postmortem intervals for investigating the relationship between EC and PMI. Methods Healthy Sprague-Dawley rats were sacrificed and kept at constant temperature of 25°C. Cerebrum, lung, liver and muscle were extracted at different PMIs of immediate (0d), 1d, 2d, 3d, 4d, 5d, 6d and 7d, and their extraction liquids were prepared with ultrapure water at the ratio of 1g:10mL. EC were separately determined for different tissues and organs. The relationships between EC of different tissues and organs and PMI were analyzed and their regression functions were established. The characteristics of EC values for four tissues and organs were compared and their decomposition processes were discussed. Results EC of brain and muscle showed no significant changes within 1d, and increased rapidly during 2~7d; but EC of liver and lung started to increase within 1d and increased rapidly during 2~7d.The relationship between EC of different tissues and organs and PMI were well fitted with cubic equations and liver gained the highest coefficient (R2=0.96). Additional, the EC of four organs presented various increasing laws in different periods of PMI. Conclusion The EC of cerebrum, lung, liver and muscle of rats were well fitted with PMI and the determination of EC of cadaver tissues can be expected to become an effective method for PMI estimation in forensic practice.

Objective: To study therapeutic effect of personalized aerobic exercise based on exercise load test assessment on heart function and psychological state in patients with acute myocardial infarction (AMI). Methods: According to random number table, a total of 80 AMI patients during recovery period were randomly and equally divided into routine treatment group (n=40, received routine drug therapy) and exercise group (n=40, received personalized aerobic exercise based on exercise load test assessment on the basis of routine treatment group). Serum levels of high-sensitivity cardiac troponin I (hs-cTnI) and creatine kinase isoenzyme MB (CK-MB), and left ventricular ejection fraction (LVEF), stroke volume (SV), left ventricular fractional shortening (LVFS), ventricular wall thickening rate (△T), motion amplitude of interventricular septum (AIS), and scores of self-rating anxiety scale (SAS) and self-rating depression scale (SDS) were compared between two groups before and after 12-week intervention. Results: Compared with before intervention, there were significant reductions in serum levels of hs-cTnI and CK-MB, and scores of SAS and SDS; and significant rise in LVEF, SV, LVFS, △T and AIS in both groups after 12-week intervention (except LVEF of routine treatment group), P<0.05 or <0.01; compared with routine treatment group, there were significant reductions in serum levels of hs-cTnI [(9.31±1.04) ng/L vs. (5.89±0.72) ng/L] and CK-MB [(11.34±1.25) U/L vs. (8.41±1.01) U/L],in scores of SAS [(51.34±6.54) scores vs. (42.32±5.29) scores] and SDS [(50.23±6.92) scores vs. (43.86±6.03) scores];and significant rise in LVEF [(57.12±6.67)% vs. (62.32±7.34)%], SV [(62.45±7.13) ml vs. (69.18±7.84) ml], LVFS [(23.93±2.96)% vs. (28.45±3.12)%], △T [(28.51±3.41)% vs. (34.52±4.87)%] and AIS [(9.56±1.02) mm vs. (12.45±1.46) mm] in exercise group, P<0.05 or <0.01. Conclusion: Personalized aerobic exercise based on exercise load test assessment can reduce myocardial cell injury, improve cardiac function, relieve negative emotions and promote patients’ rehabilitation rapidly.

Objective To study the application of photodynamic therapy (PDT) for dental caries prevention using whole body luminescence fiber,and to investigate the effects of PDT on the content of Ca and P in rat molar enamel.Method The rat dental caries model was established by inoculating with S.mutans.Eighty male rats were randomly divided into five groups,including three experimental groups:17 mW (8 mW/cm2) PDT (group A),34 mW (15 mW/cm2) PDT (group B),68 mW (30 mW/cm2) PDT (group C),a positive control group:20 g/L NaF solution (group D),and a negative control group:0.9％ physiological saline (group E).The experimental groups were treated by 40 μg/mL hematoporphyrin monomethyl ether (HMME) and 650 nm diode laser irradiation.The experiments were conducted for 4 weeks.The contents of Ca and P in the molars of each group were measured by inductively coupled plasma emission spectrometry.Results The contents of Ca and P in group B,C and D after PDT were significantly higher than those in group A and E (all P＜0.05).The contents of Ca and P in group A showed no significant difference before and after PDT,while those in groups B and C showed significant increase after PDT (all P＜O.05).The increment of Ca in group A after PDT was lower than that in group D (P＜0.05),while those in group B and C were significantly higher than those in group D (all P＜0.05).There was no significant difference in the increment of Ca and P between group B and C after PDT.Conclusions In the range of the experimental parameters,the PDT promoted effect of tooth remineralization is better than 20 g/L NaF.The levels of Ca and P in the tooth enamel can be promoted by PDT treatment,and the contents of Ca and P are related to the pewer of PDT.The effect of low power PDT on the remineralization of enamel is not obvious.The contents of Ca and P in the tooth enamel are increased with laser power of PDT.When the laser power increased to a certain value,the change in contents of the two elements is not obvious.PDT can maintain the tooth remineralization microenvironment.

Objective To investigate the clinical value of serum procalcitonin (PCT) in diagnosis of urinary tract infection(UTI) in elderly patients.Methods 114 elderly patients with UTI in the department of infectious diseases of a hospital from January 2013 to December 2014 were analyzed retrospectively, clinical data of patients with abnormal and normal serum PCT were compared, PCT levels in patients with positive and negative blood cultures were compared, PCT receiver operating characteristic (ROC) curve for the diagnosis of bacteremia were drawn.Results Among 114 elderly patients with UTI, 46 were with abnormal PCT, 68 were with normal PCT.In abnormal PCT group, the proportions of patients with highest body temperature within 24 hours of admission, white blood cell count, neutrophil granulocyte percentage, C-reactive protein (CRP), blood urea nitrogen(BUN), creatinine(Cr), and urinary tract obstructive disease were all higher than those with normal PCT (all P<0.05).Among 42 patients with blood culture, PCT level in positive blood culture group(n=12) was higher than negative blood culture group(n=30)(1.93 [0.57-8.32] μg/L vs 0.36[0.15-1.01]μg/L, P=0.028).The area under the ROC curve (AUC) of the patients with bacteremia diagnosed by PCT was 0.72(95%CI:0.54-0.90),at the optimal value of 0.52 g/L, sensitivity, specificity, positive predictive value, and negative predictive value were 83.3%, 63.3%, 47.6%, and 90.5% respectively.Conclusion Serum PCT level can well reflect the severity of elderly patients with UTI, and is of great value in early diagnosis of bacteremia in elderly patients with UTI.

AIM: To investigate the effect and possible mechanisms of interleukin-2 (IL-2) on the cell contractility in cardiomyocytes during hypoxia and reoxygenation.METHODS: Glucose-free Krebs-Henseleit (K-H) solution, gassed with 95% N 2 and 5% CO 2 for hypoxia, were used. The cell contractility were determined after 20 min of hypoxia and 30 min of reoxygenation by the video tracking system. The parameters of cell contractility included peak velocity of cell shortening (+d L /d t max), peak velocity of cell relengthening (-d L /d t max), contraction amplitude (dL) and end-diastolic cell length.RESULTS: It was shown that during hypoxia, the cell contraction was depressed. All the parameters were unable to return to the pre-hypoxia level during reoxygenation. Pretreatment with IL-2 at 2?10 3 U/L attenuated the inhibitory effect of hypoxia/reoxygenation on contractility in single ventricular myocytes. The effect of IL-2 was reduced in the presence of 10 -8 mol/L nor-binaltorphimine (nor-BNI), a selective ?-opioid receptor antagonist. On blockade of protein kinase C with 3?10 -6 mol/L chelerythrine, the effect of IL-2 was significantly attenuated. The effect of IL-2 was also blocked by 10 -4 mol/L 5-hydroxydecanoate (5-HD), a mitochondrial ATP-sensitive potassium (K ATP ) channel blocker. CONCLUSIONS: The results of the present study provide evidence that pretreatment with IL-2 at 2?10 3 U/L attenuates the effect of hypoxia/reoxygenation on cell contraction in the isolated ventricular myocytes. The ?-opioid receptor mediates the effect of IL-2, in which activation of PKC and opening of mitochondrial ATP-sensitive potassium (mito K ATP ) channel are involved.