Objective:To investigate the correlation between the change in metabolic components of urine and the abnormal sapra syndrome by using a rat model of abnormal sapra syndrome.Methods:Multiple factors,such as dry environment,dry feed,and chronic electrical stimulation,were used to establish the abnormal sapra syndrome in Wistar rats by Uyghur medicine.The differences in metabolites were detected through the metabonomics method.Results:The urine of rats in abnormal sapra syndrome group showed significant high abundance metabolites as follows:Leucine,isoleucine,and glycoprotein.And that significant low abundance metabolites as follows:Glutamine,creatine,citric acid,and phenylalanine.Conclusion:The urine of rats with the abnormal sapra syndrome displays abnormal energy metabolism.It is likely that the dysfunctional metabolisms of three major nutrients might be the molecular basis for the abnormal sapra syndrome.

OBJECTIVE To investigate the distribution and resistance of clinical isolates to antimicrobial agents commonly used.Antimicrobial agents should be used rationally based on the results of susceptibility testing.METHODS The clinical isolates were identified with W/A-40 or VITEK-32.The results were analyzed by WHONET 5.3 software according to CLSI 2005.RESULTS A total of 2892 clinical isolates were collected in 2007.Gram-negative bacilli accounted for 68.2% and Gram-positive cocci accounted for 31.8%.The top eight pathogens were Pseudomonas aeruginosa,Escherichia coli,Klebsiella spp,Acinetobacter spp,coagulase-negative Staphylococcus,Enterobacter spp,Serratia spp and S.aureus.About 76.4% of S.aureus isolates were MRSA,81.6% of coagulase-negative Staphylococcus isolates were meticillin-resistant.Under 20.0% of Enterobacteriaceae strains were resistant to cefoperazone/sulbactam,imipenem and piperacillin/tazobactam.About 16.3% and 32.5% of P.aeruginosa isolates were resistant to cefoperazone/sulbactam and imipenem.CONCLUSIONS Gram-negative bacilli were dominant isolates in our hospital during 2007.P.aeruginosa is the most frequent pathogenwith severe antibiotic resistance.Enterobacteriaceae are susceptible to cefoperazone/sulbactam and imipenem.

Objective To observe the effects of dexmedetomidine (DEX) on the expressions of TNF-α, IL-1β and apoptosis-related proteins in rat mesenteric artery.Methods Male SD rats of SPF grade were sacrificed and the mesenteric artery was separated under the stereo-microscope.We established an experimental model of vascular injury induced by lipopolysaccharide (LPS) and randomly divided the injured vessels into dexmedetomidine treatment group and control group.DEX treatment group was divided into 10-8, 10-7, and 10-6 mol/L subgroups according to the different concentrations of DEX.RNA and total protein was extracted in each group.The mRNA expressions of TNF-α, IL-1β and CaSR were detected by RT-PCR and the protein expression of TNF-α, Caspase-3 and AMPK were tested by Western blot.Results DEX (10-8, 10-7, and 10-6mol/L) obviously reduced vascular inflammatory reaction induced by lipopolysaccharide, reduced the mRNA and protein expressions of TNF-α as well as mRNA expression of IL-1β.Caspase 3 protein expression significantly lowered in blood vessels in DEX group compared with LPS group.DEX had no obvious effect on lipopolysaccharide-induced vascular AMPK and CaSR mRNA or protein expressions.Conclusion DEX obviously deceased the expressions of inflammation-related proteins, suggesting that DEX has anti-inflammatory effects.

Objective To investigate the effects of endotracheal suctioning,turning over,oral caring and swallowingon cuff pressure,so as to provide evidence for the management of the endotracheal cuff.Methods During continuous monitoring of cuff pressure with pressure sensor,the changes of cuff pressure were recorded in the process of endotracheal suctioning,turning over,and oral caring.The data of cuff pressure were recorded including before activity,during activity,after activity for 5 min,15 min and 30 min.In addition,the data of cuff pressure were recorded including before swallowing,during swallowing,after swallowing for 1 min,5 min and 10 min.Results The cuff pressure during endotracheal suctioning and after endotracheal suctioning for 5 min was higher than that before endotracheal suctioning,the difference was statistically significant (P＜0.05);the cuff pressure during turning over and after turning over for 5 min was higher than that before turning over,the difference was statistically significant (P＜0.05);the cuff pressure during the oral caring was higher than that before oral caring,the difference was statistically significant(P＜0.05);the cuff pressure during swallowing was higher than that before swallowing,the difference was statistically significant(P＜0.05).Conclusion These clinical factors would lead to transient increase of cuff pressure including suctioning,turning over,oral caring,and swallowing.The instantaneous cuff pressure will mislead the staff to judge the safey of endotracheal cuff.The cuff pressure should not be blindly adjusted,so as to avoid the risks of leakage and aspiration.

ObjectiveTo investigate the early diagnosis value of IMA and D-dimer and cTn Ⅰ in ACS.MethodsAll the 113 blood samples of patients with chest pain in the emergency department of the Third Hospital of Hebei Medical University were selected.Thirty healthy people were selected as the control group.Patients were divided into two groups:one of 52 cases was within 3 hours after onset of chest pain.the other of 61 cases was between 3 to 6 hours.According to the final clinical diagnosis,31 cases were divided into non-ischemic chest pain group (NICP) and 82 cases were divided into the ACS group.The ACS group was divided into the UA group (51 cases),NSTEMI group (18 cases) and STEMI group (13 cases).IMA was measured with albumin-cobalt binding test,and D-dimer was measured with the automated blood coagulation analyzer,and cTn Ⅰ was measured with the automatic biochemical analyzer.Levels of IMA,D-dimer,cTn Ⅰ were compared in the different groups and their sensitivity,specificity and accuracy to the early diagnosis of ACS were evaluated by Four format diagnositic test.ResultsThe levels of IMA in ACS group,which include the UA group,NSTEMI group and STEMI group were (0.722 ± 0.181 ),(0.601 ± 0.122),(0.631 ± 0.153 ) ABSU respectively.The levels of D-dimer were ( 0.485 ± 0.124 ),( 0.571 ± 0.181 ),(0.748 ± 0.094 ) mg/L respectively.The levels of cTn Ⅰ were ( 0.076 ± 0.027 ),( 0.059 ± 0.038 ),(0.065 ± 0.015 )μg/L respectively.Concentrations of IMA,D-dimer and cTn Ⅰ in ACS group were significantly higher than those of the NICP group [IMA (0.338 ± 0.065 ) ABSU,D-dimer (0.368 ± 0.078 )mg/L,cTn Ⅰ (0.022 ±0.007) μg/L] and the controls group [IMA (0.292 ±0.058) ABSU,D-dimer (0.267 ±0.052) mg/L,cTn Ⅰ (0.029 ± 0.016) μg/L].There were significant differences between the ACS group and the NICP group and the control group,F value was 3.613,3.289 and 3.521 respectivily,and P ＜0.05.The levels of IMA in ACS group within 3 hours and between 3 to 6 hours,which is (0.665 ±0.104 ),(0.520 ± 0.073 ) ABSU,were significantly higher than that of the controls (0.292 ± 0.058 ) ABSU ( F value was 3.58,P ＜ 0.05 ).The levels of D-dimer and the cTn Ⅰ in the group between 3 to 6 hours [which were (0.634 ±0.213 ) mg/L and (0.079 ±0.032) μg/L] were significantly higher than those of the controls [(0.267 ±0.052) mg/L and (0.029 ±0.016) μg/L] (q was4.24 and 3.46,P ＜0.05).The sensitivity,specificity and accuracy was 83.36％,70.97％ and 81.42％ of the IMA in a separate diagnosis of ACS,but the sensitivity,specificity and accuracy were 97.56％,58.06％ and 86.73％ of the IMA,D-dimer and cTn Ⅰ with the affiliation diagnosis.ConclusionThe serum IMA is a more sensitive indicator of ACS in early myocardial ischemia than cTn Ⅰ and plasma D-dimer.Serum IMA in combination with D-dimer and cTn Ⅰ could improve the sensitivity and specitivity,and had value to guide cinical diagnosis of ACS in the early stage.

Objective:To investigate the effect of miR-424-5p on radiosensitivity and its mechanism in cervical cancer patients.Methods:The expression levels of miR-424-5p in the cervical cancer tissues and Hela cells were detected by RT-qPCR. The apoptosis rate of Hela cells was determined by flow cytometry. The proliferation activity of Hela cells was detected by CCK-8 assay. The protein expression levels in Hela cells were measured by Western blot.Results:Compared with normal tissues and cells, the expression level of miR-424-5p was significantly down-regulated in the cervical cancer tissues and Hela cells (1.03 vs. 0.88, P<0.01; 1.00 vs. 0.75, P<0.01). Overexpression of miR-424-5p significantly inhibited the proliferation activity of Hela cells after radiation treatment ( P<0.01), and significantly increased the apoptosis rate of Hela cells after radiation treatment (24.82% vs. 49.94%, P<0.001). Overexpression of miR-424-5p inhibited HMGA1 expression (1.01 vs. 0.63, P<0.01). miR-424-5p directly affected HMGA1, thereby impacting the radiosensitivity of cervical cancer radiotherapy. Conclusion:miR-424-5p can improve the radiosensitivity of cervical cancer radiotherapy by directly targeting HMGA1.

AIM: To investigate the role of NF-?B/I?B signal pathway in the regulation of (cyclooxygenase-2) (COX-2) expression in human mesangial cells (HMC). METHODS: The PGE_2 concentration in supernatants of HMC was measured by radioimmunoassay. COX-2 mRNA and protein expression were determined by RT-PCR and Western blot. Electrophoretic mobility shift assay (EMSA) and Western blot were used to detect the activity of NF-?B and degradation of I?B. RESULTS: IL-1? significantly upregulated COX-2 expression and PGE_2 production in HMC. Significant up-regulation of NF-?B activation, nuclear translocation of p65 subunit, and degradation of I?B ? and I?B ? were observed in IL-1?-induced HMC. CONCLUSION: Expression of COX-2 in IL-1?-induced HMC is mediated by NF-?B/I?B signal pathway. [

Objective To explore the value of coronary flow reserve(CFR) evaluating myocardial ischemia measured by adenosine triphosphate (ATP) stress transthoracic Doppler echocardiography (TTDE),and the feasibility of CFR to predict coronary stenosis.Methods Fifty-four patients suffering chest pain with known or suspected coronary artery disease were performed ATP stress TTDE to measure resting and maximum expansion coronary blood flow velocity and calculate CFR.all patients were performed by coronary angiography (CAG) and single-photon emission computed tomography (SPECT) myocardial perfusion imaging.Results ① To evaluate myocardial ischemia,there was not statistical significant difference between non-invasive CFR and SPECT myocardial perfusion imaging(P ＞0.05).CFR≤2.0 was the best cutoff value for evaluating myocardial ischemia which yielded a sensitivity of 93.3 ％ and specificity of 89.7％.②Coronary artery stenosis was negatively correlated with CFR (P ＜0.001).ROC curve analysis demonstrated that CFR≤ 1.60 yielded a sensitivity of 92.3％ and specificity of 73.3％ to predict coronary stenosis significantly.Conclusions CFR measured by ATP stress TTDE can evaluate myocardial ischemia of coronary artery disease and predict LAD significant stenosis before CAG.Using CFR and CAG has important clinical value for choosing treatment of stable coronary artery disease.

AIM: To observe the effects of miR-542-5p on the proliferation of rat small intestine crypt epithe-lial IEC-6 cells induced by sphingosine-1-phosphate (S1P).METHODS: Two IEC-6 cell lines (SphK1-IEC-C1 and SphK1-IEC-C2) were established, which expressed sphingosine kinase-1 (SphK1) stably.Radioactive tracer was used to detect SphK1 activity and S1P secretion.The cell proliferation was observed by cell counting and described by drawing growth curve, and the cell cycle analysis was carried out by flow cytometry.The level of miR-542-5p was evaluated by RT-qPCR.RESULTS: Compared with control vector cells without SphK1 cDNA, both SphK1-IEC-C1 and SphK1-IEC-C2 cell lines showed that Sphk1 was elevated, both intracellular and extracellular S1P increased dramatically, the rate of cell growth was faster, the percentage of the cells in S phase increased, and miR-542-5p expression decreased.S1P (0.5~10 μmol/L) led to the decrease in miR-542-5p expression.On the contrary, SphK1 silencing resulted in the increase in miR-542-5p expression in the IEC-6 cells.The miR-542-5p was elevated in SphK1-IEC-C1 cells and SphK1-IEC-C2 cells, which caused the decrease in the percentage of the cells in S phase.The cell growth rate in the above-mentioned 2 cell lines decreased compared with negative control group.CONCLUSION: In IEC-6 cells, S1P promotes proliferation by inhibiting miR-542-5p expression, which induces the cell cycle transferring from G1 phase to S phase.

Objective To investigate the inhibitory effects of high mobility group chromosomal protein N2 (HMGN2)on growth of human bladder cancer T24 cells and ectopic tumor growth of nude mice. Methods MTT and flow cytometry assay were conducted to detect cell growth of bladder epithelial cells(T24)cells in vitro. The transplantation tumor models in nude mice were constructed by injecting T24 cells in vivo. The para-tumorswere injected with PBS,HMGN2 protein and cisdichlorodiamineplatinum(DDP),respectively. Tumor volume and weight were calculated. The expression of cell proliferation-related proteins was detected by Western blot assay. Results MTT assay proved that HMGN2 could significantly inhibit the growth of T24 cells. Flow cytometry assay verified that HMGN2 could block T24 cells in S stage of the cell cycle. The average tumor volume and weight in the HMGN2 group and DDP positive control group were smaller than those in the PBS group(P<0.05,respectively), with the tumor inhibitory rate of 25% and 23%,respectively. The results of Westernblot showed that HMGN2 could decrease Bcl-2 expression and increase Bax expression in tumor. Conclusion HMGN2 has a significant antitumor effect on T24 cells and bladder carcinoma in nude mice,which may be associated with the induction of the apoptosis of carcinoma cells and the regulation of the cell cycle.