Objective To investigate the quality control and quality assurance of the SPECT/CT system.Methods The energy peak,energy resolution capacity and the intrinsic uniformity of the device's detector were regularly examined, and the quality control was performed. Results The daily hardware maintain could reduce the rate of system's trouble. The device's energy peak,energy resolution capacity were consistent during half year's observation period. The two detector's intrinsic uniformity were better after calibration than before. [ detector Ⅰ: ( 2.71 ± 0.28 ) vs (2.37±0.11)(t=2.489,P<0. 05);detector Ⅱ:(2.68 ±0.12)vs(2.38 ±0. 19)(t =6.421,P <0.01) ] .Conclusion Regular quality control and maintain could keep the function stabilization,enhance the availability rate of the SPECT/CT system.

This study aimed at investigating the inhibitory effects and the anti-tumor mechanisms of co-adminis-tration of fusion proteins mGM-CSF/βhCG ( GC ) and hVEGF121/βhCG ( VC ) on RM-1 prostatic cancer and B16 F10 melanoma in the C57 BL/6 J mouse model. Two recombinant stains containing pET-28 a-mGM-CSF-X10-βhCGCTP37 and pET-28 a-VEGF-M2-X10-βhCG-CTP37 were induced by lactose to express fusion proteins. The fusion proteins were separated and purified to prepare the anti-tumor protein vaccines ( VC protein vaccine and GC protein vaccine) , which were then mixed to prepare a combined protein vaccine named VGC protein vac-cine. The prostatic cancer and melanoma tumor-bearing mice C57 BL/6 J were immunized with described vac-cines, then the growth of each tumor was measured;splenocyte proliferation of immunized mice was detected;and the cytotoxic effects of the vaccine on tumor cells were tested. After that, the in vivo concentrations of IFN-γ and anti-hVEGF antibodies were investigated by ELISA. The difference between each experimental group and normal saline group ( NS) was statistically significant in both tumor-bearing mouse models ( P <0. 05) respectively. Besides, VGC group exhibited significantly better anti-tumor effect compared with the GC and VC groups with the anti-tumor rate ( 41. 7 ± 0. 83)% and ( 46. 4 ± 1. 27)% for prostatic cancer and melanoma tumor, respectively. The co-administration of the two proteins, VC and GC, could inhibit the growth of RM-1 prostatic tumor and B16F10 melanoma effectively via anti-tumor immunity and anti-tumor angiogenesis.

Objective To investigate the relationship between androgen receptor CAG-gene polymorphism and androgen in male with salt sensitive hypertension.Methods Through the oral saline loading test and furosemide volume method male hypertension group were divided into salt-sensitive (SS group) and salt-insensitive (SR group).The samples from 161 males were selected in the study,including salt sensitive hypertension patients (SS group,61/161),salt-insensitive hypertension patients (SR group,40/161) and age-matched healthy samples (control group,60/161).All samples were sequenced with an analysis method (CAG) n repeated polymorphism,and determinated of total testosterone (TT) and free testosterone (FT) level in serum by electrochemiluminescence immunoassay.Results The number of CAG repeats was 14～34,average 22.4± 2.7.The CAG repeats of SS,SR and control group were 23.5±3.75,22.3±3.17 and 21.8±2.95,respectively.There were significant differences among the three groups (t=2.627～ 3.257,all P＜0.05).The level of TT and FT in SS and SR group were decreased compared with that of control group.At the same time,the level of SS group was lower,and there were significant differences among the three groups (t=2.524～ 3.826,all P＜0.05).Conclusion The androgen receptor gene repeat length and androgen levels are associated with male hypertension,especially salt-sensitive hypertension.Long (CAG) n repeat polymorphism maybe a genetic factor in the pathogenesis of hypertension.Plasma androgen levels may be used as a predictor of male salt sensitive hypertension.

OBJECTIVETo explore the effect of intravenous injection rate and site of fentanyl on the incidence and onset time of fentanyl-induced cough.

METHODSeventy-five ASA class I or II patients were randomized into 3 groups and received intravenous fentanyl administration at 4 microg/kg in different manners. In group A, fentanyl was injected within 2 s into the forearm veins; in group B, fentanyl was injected in 2 s through the dorsal foot veins or the great saphenous vein anterior to the ankle; in group C, fentanyl was injected in 15 s by the same route as in group A.

RESULTSThe incidence of cough was 44%, 52% and 8%, with cough onset time of 16.1-/+2.7 s, 21.9-/+3.7 s and 23.3-/+3.2 s in groups A, B and C, respectively. Compared with group A, group B had a delayed onset of cough (P<0.05), and group C had both a lowered incidence of cough (P<0.05) and delayed onset of cough (P<0.05).

CONCLUSIONSThe rate of fentanyl injection through the same peripheral venous access at the same dose may affect the incidence and onset time of cough. At the same dose and injection rate of fentanyl, forearm venous access of injection resulted in earlier onset of cough than lower limb venous access, but the incidence is similar.

Adjuvants, Anesthesia ; administration & dosage ; adverse effects ; Adolescent ; Adult ; Aged ; Cough ; chemically induced ; Female ; Fentanyl ; administration & dosage ; adverse effects ; Humans ; Injections, Intravenous ; adverse effects ; Male ; Middle Aged ; Time Factors ; Young Adult

Glutamate-1-semiadhyde aminotransferase (GSAT) is an enzyme in the upstream biosynthetic pathway of uroporphyrinogen III that is the substrate of uroporphyrinogen III methyltransferase (UPMT), a novel red fluorescent protein. In order to detect the effect of overexpression of GSAT with UPMT on the fluorescent intensity in Escherichia coli, we amplified maize upmt gene by PCR and inserted into the first cistron of pET Duet-1 plasmid to create the vector pETU. The expressed UPMT was fused histidine tag at N terminus. We also amplified E. coli hemL gene encoding GSAT by PCR reaction, eliminated Nco I site within the hemL gene by site-directed mutagenesis and subcloned into pET-51b plasmid. The resultant hemL gene was inserted the second cistron of pETU plasmid to produce the vector pETeGU. The expressed GSAT has the extra Strep-TagII at N terminus. Compared to overexpression upmt gene alone, coexpression both genes did not resulted in the remarkable change in either the amount of the UPMT, as estimated by western blot analysis, or the constitution of red fluorescent materials, as shown by UV/visible light scanning analysis, but increased cellular level of the fluorescent material trimethylpyrrocorphin with the specific absorption at 354 nm. The red fluorescence emitted by the colonies cooverexpressing both enzymes completely disappeared after treated by 2 mmol/L gabaculine, the GSAT inhibitor, suggested that the recombinant GSAT may increase the cellular level of uroporphyrinogen III, and thus enhanced the red fluorescence of the E. coli cells conferred by the recombinant UPMT.
Escherichia coli ; genetics ; metabolism ; Genes, Plant ; Genetic Vectors ; genetics ; Intramolecular Transferases ; biosynthesis ; genetics ; Luminescent Proteins ; biosynthesis ; genetics ; Methyltransferases ; biosynthesis ; genetics ; Mutagenesis, Site-Directed ; Recombinant Proteins ; biosynthesis ; genetics ; Zea mays ; genetics

Objective To investigate the effect of nutritional intervention on elderly patients with type 2 diabetes mellitus (T2DM) in community, so as to control T2DMs more effectively and improve the patients'life quality and prolong their life span. Methods The intervention group (130 cases) with a definite diagnosis of T2DM were included from one neighborhood of two communities respectively.So were the control group (130) by the same approach.The two groups were matched in sex and age.In addition to medical treatment, the intervention group was given diet guide, nutritional education, nutritional intervention and so on and the control group was given drug treatment alone.The data obtained was analyzed by group t test. Results The cases in the two groups had the same diet habit before intervention.After intervention, as compared with the control group, the intervention group had the diet constitution improved; and it was found that the blood sugar 2 hours after meal, total cholesterol, low density lipoprotein cholesterol,fasting plasma glucose, total triglyceride and HbAlc were significantly lower, high-density lipoprotein cholesterol was significantly higher ( P <0 .05 ) . Conclusion The nutritional intervention can improve the glucose metabolism and reduce the risk factors in the T2DM population.

Objective To evaluate the predictive value of neutrophil to lymphocyte ratio (NLR) on 28-day mortality of patients with severe pneumonia. Methods The clinical data of 214 severe pneumonia patients admitted to the department of emergency medicine of the First Affiliated Hospital of Xi'an Jiao Tong University from January 2015 to December 2018 were retrospectively analyzed. The clinical parameters, such as gender, age, underlying diseases, and blood routine, procalcitonin (PCT), liver and kidney function, blood lactic acid (Lac), arterial partial pressure of oxygen (PaO2) at admission or within 24 hours after admission were reviewed. NLR, oxygenation index (PaO2/FiO2) and acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) were calculated, and the change tendency of each index within 3 days after admission were observed. The patients were divided into survival group and death group according to 28-day outcomes. Multivariate Logistic regression analysis was used to screen the high risk factors of 28-day mortality in patients with severe pneumonia. Receiver operating characteristic (ROC) curve was drawn to evaluate the predictive value of NLR for 28-day mortality risk in patients with severe pneumonia. Results 214 patients were enrolled in the analysis, 132 survived in 28 days and 82 died. Compared with survival group, the white blood cell (WBC), neutrophil (NEU), NLR, PCT, Lac and APACHEⅡ scores were significantly increased, and lymphocyte (LYM) was significantly decreased in the death group. There was no significant difference in gender, age, basic diseases, platelet count (PLT), liver and kidney function parameters, or PaO2/FiO2 between the two groups. The NLR, PCT, Lac and APACHEⅡ score in the death group were increased gradually within 3 days after admission, PaO2/FiO2 was decreased gradually, which showed significant differences as compared with survival group at 3 days after admission [NLR: 27.15±7.61 vs. 14.66±4.83, PCT (μg/L): 13.52±3.22 vs. 6.41±4.22, Lac (mmol/L): 6.78±1.70 vs. 2.74±1.15, APACHEⅡ score: 37.76±5.30 vs. 22.11±4.94, PaO2/FiO2 (mmHg, 1 mmHg = 0.133 kPa): 114.12±20.16 vs. 186.49±13.95, all P < 0.05]. Multiple Logistic regression analysis showed that NLR [odds ratio (OR) = 1.163, 95% confidence interval (95%CI) =1.007-1.343, P = 0.040], PCT (OR = 1.210, 95%CI = 1.098-1.333, P = 0.001), Lac (OR = 1.263, 95%CI = 1.011-1.579, P = 0.040) and APACHEⅡ score (OR = 1.103, 95%CI = 1.032-1.179, P = 0.004) were the independent risk factors of 28-day mortality in the patients with severe pneumonia. ROC curve analysis showed that compared with the traditional indicators including PCT, Lac, and APACHEⅡ score, NLR showed a good predictive value for 28-day mortality in the patients with severe pneumonia [area under ROC curve (AUC): 0.791 vs. 0.707, 0.690, 0.720]. When the optimal cut-off value of NLR was 14.92, the sensitivity was 71.95% and the specificity was 73.48%, meanwhile, the positive likelihood ratio was 2.713 and the negative likelihood ratio was 0.382. Conclusion The increased NLR at admission is a high risk factor of 28-day mortality in patients with severe pneumonia, which is useful for predicting prognosis of patients with severe pneumonia.

Objective To investigate the pathogenesis of the production of anti-neutrophil cytoplasmic antibodies (ANCA) in the rat models of chronic bronchitis (CB) with recurrent infections. Methods The CB models were made by double element of smoking and lipopolysaccharide (LPS) stimulation. The rats were divided into four groups, including normal control group (n=5), phorbol-12-myristate-13-acetate (PMA)-treated healthy rats control group (n=5), CB rats group (n=5) and PMA-treated CB rats group (n=6). Renal function of rats was detected. The histopathological lung and kidney tissues were observed by HE staining of paraffin section. Immunological markers, including myeloperoxidase anti-neutrophil cytoplasmic antibodies (MPO-ANCA), proteinase 3 anti-neutrophil cytoplasmic antibodies (PR3-ANCA) and citrullinated histone H3 (CitH3), were measured by enzyme-linked immune-sorbent assay (ELISA) at different time points. Correlation between CitH3 and MPO-ANCA was analyzed by the Spearman rank correlation. NETs components were further detected in lung and kidney tissue by confocal immunofluorescence and colocalization analysis. Results (1) The serum levels of CitH3 and MPO-ANCA in CB+PMA group showed an increased trend. Compared with those in the normal control group and CB rats group, the serum levels of CitH3 and MPO-ANCA in CB+PMA group increased significantly at the sixth week (both P＜0.05). Serum CitH3 levels in rats were positively correlated with serum MPO-ANCA levels (rs=0.490,P=0.024). (2) There were pathological manifestations of CB in the lung tissues of rats in CB group and CB+PMA group, and no obvious abnormalities in the lung tissues of rats in the normal control group and control group. In the rat kidney tissue of CB+PMA group, there were inflammatory cells infiltrated in the glomerular and around the renal tubules, but glomerular necrosis was not found. No obvious abnormalities were observed in the kidney tissues of rats in the normal control group, PMA-treated healthy rats control group and CB group. (3) In the lung and kidney tissues of CB+PMA group NETs could be detected by confocal immunofluorescence analysis. Conclusion CB rats with the recurrent infections can release large amounts of NETs, in which the exposure of MPO antigen will break the immune tolerance and result in the production of MPO-ANCA.

Objective To observe the effect and safety of the aversion therapy with furazolidone on patients with alcohol dependence.Methods 90 patients with alcohol dependence were randomly divided into the aversion therapy group and the control group with 45 cases in each group. The cases of the aversion therapy group were treated by aversion therapy with furazolidone and those of the control group were treated with routine therapy. The changes of the blood pressure, pulse and respiratory rate before and after drinking were observed and the rate of successful abstinence in one year was investigated.Results The effect of the aversion therapy group treated with furazolidone was significantly better than that of the control group ( P<0.05). The aversion therapy was safe.Conclusion The aversion therapy with furazolidone is more effective and safe.

OBJECTIVETo investigate the protective effects of irbesartan against cardiac inflammation associated with diabetes and obesity in the db/db mouse model of type 2 diabetes and explore the underlying mechanisms.

METHODSTwenty- four 10-week-old diabetic db/db mice were equally randomized into irbesartan treatment (50 mg/kg per day) group and model group, using 12 nondiabetic littermates (db/+) as the controls, The mice were treated with irbesartan or saline vehicle for 16 consecutive weeks, after which the heart pathology was observed and the heart weight, body weight, and serum levels of fasting blood glucose (FBG), total cholesterol(TC), and triglycerides(TG) were measured. The expression of nuclear factor-kappaB (NF-κB) p65 in the myocardium was assessed with immunohistochemistry, the protein levels of P-IκBα ,IκBα and β-actin were analyzed with Western blotting, and the pro-inflammatory cytokines IL-6 and TNF-α mRNA were detected using quantitative real-time PCR (qPCR).

RESULTSCompared with db/+ mice, the saline-treated db/db mice developed obesity, hyperglycemia and hyperlipidemia (P<0.01). Histopathological examination of the heart tissue revealed inflammatory cell infiltration, increased myocardial interstitium and disorders of myocardial fiber arrangement. The diabetic mice showed increased P-IαBα and decreased IκBα protein levels, enhanced activity and expression of NF-κB in the hearts, and increased mRNA expression of IL-6 and TNF-α in the myocardium. These abnormalities were all associated with increased inflammatory response. Treatment with irbesartan improved the heart architecture and attenuated high glucose-induced inflammation in the diabetic mice.

CONCLUSIONTreatment with irbesartan attenuates cardiac inflammation in type 2 diabetic db/db mice, and this effect was probably associated with the suppression of cardiac angiotensin II and NF-κB signaling pathway.

Actins ; metabolism ; Angiotensin II ; metabolism ; Animals ; Biphenyl Compounds ; pharmacology ; Cardiovascular Diseases ; drug therapy ; Diabetes Mellitus, Experimental ; complications ; Diabetes Mellitus, Type 2 ; complications ; Inflammation ; drug therapy ; Interleukin-6 ; metabolism ; Mice ; Obesity ; complications ; Random Allocation ; Real-Time Polymerase Chain Reaction ; Signal Transduction ; Tetrazoles ; pharmacology ; Transcription Factor RelA ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism