OBJECTIVE To investigate dopamine level changes in the Nucleus Accumbens (NAc) of the limbic system by salicylate and the role of dopamine in the mechanisms of tinnitus.METHODS We recorded the change of dopamine before and after sodium salicylate injection in rats by microdialysis combined with electrochemical methodologies in the nucleus accumbens (NAc).RESULTS Salicylate produced significant increase in dopamine level in the NAc, to a maximum of (321±97)% of baseline and then remain stable. In contrast, saline only produced slight increase.CONCLUSION The increase of dopamine in the NAc may be related to the generation of tinnitus. The data in vivo provide direct evidence of the important role that the dopaminergic system plays in the generation of tinnitus.

Objective:To discuss the regulation of berberine and dioscin extracted from traditional Chinese medicine in the expression of protein moleculer related with glucose metabolism in trophoblast cells,such as IRS-1,P1-3K,Glut1,PPAR ?. Methods:To culture the chorion trophoblast cell in the early pregnancy,to induce cells to suffer glucose metabolism obstacle with the use of WortmaninnTake advantage of berberine and dioscin extracted from the Chinese traditional medicine with intervention,simultaneously set the troglitazone(T) and dimthyl(R) for the control group. Detect the gene expression with the use of RT-PCT,simutaniously detect the protein expression in molecular level. Examine the expression in the protein level with the technique of Western blot in combination with the technique of LSM for the expression location of protein moleculer related.Results:① With the induction of WT,the glucose metabolism inside the tropholast cells becomes abnormal,compared with normal(P

OBJECTIVE To study the expression of CSE1L gene sifted from the whole genome expression profiling in the aRNA from homogenous human nasopharyngeal carcinoma (NPC) and non-NPC biopsy tissue samples using semi-quantitative RT-PCR (sqRT-PCR). METHODS CSE1L gene was sifted from the whole genome expression profiling from homogenous NPC and non-NPC biopsy tissue samples. RNA later RNA Stabilization Reagent was used to preserve the tissue samples harvested from the nasopharynx of NPC and non-NPC patients. The samples were microdissected to get the homogenous tissue cells and then the total RNA was isolated from them. The antisense RNA (aRNA) was amplified from the total RNA by “in vitro transcription” (IVT). CSE1L gene expression in the homogenous tumor cells of NPC and the pure epithelial pillar cells of normal nasopharyngeal tissue was investigated by sqRT-PCR. RESULTS The high quality total RNA could be harvested from the microdissected homogenous tissue cells, and then the sufficient aRNA was amplified from it. The expression of CSE1L gene was identified using these aRNA by sqRT-PCR. There were significantdifference between the average expression value of CSE1L in NPC tissue (1.740?1.105) and in non-NPC tissue (0.618?0.183; df=30, t=3.159, P=0.004). The expression of CSE1L gene in the whole expression profiling were 1.056?0.296 in NPC tissue and 0.465?0.835 in non-NPC tissue respectively (df=16, t=4.317, P=0.001) . CONCLUSION The whole genome expression profiling with sqRT-PCR could be used to sift the marker genes from biopsy tissue samples. CSE1L may be as a candidate oncogene in NPC.

Objective To analyze the risk factors of gastrointestinal dysfunction in critically ill patients and provide reference for the prevention and treatment of gastrointestinal dysfunction. Methods A retrospective study was conducted, and the data of patients admitted to intensive care unit (ICU) of Jinghai District Hospital from September 2018 to March 2019 were collected. The data including sex, age, sequential organ failure score (SOFA), acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ), diagnosis in ICU, application of special drugs, hemoglobin (Hb), blood glucose, albumin (Alb) levels and presence or absence of bacteremia were collected. The patients were divided into gastrointestinal dysfunction group and non-gastrointestinal dysfunction group according to whether gastrointestinal dysfunction occurred or not. The general data, related final outcome and prognosis were compared between the two groups. Logistic regression analysis was used to analyze the risk factors affecting gastrointestinal dysfunction in critical ill patients, and the possible existing complications were recorded. The receiver operating characteristic curve (ROC) was drawn to evaluate the predictive values of risk factors. Results One hundred and thirty-eight patients were enrolled in this study, and 86 patients had gastrointestinal dysfunction. The SOFA score and proportions of using catecholamine and bacteremia in the gastrointestinal dysfunction group were significantly higher than those in the non-gastrointestinal dysfunction group [SOFA score: 7.2±3.8 vs. 5.8±3.6, the proportion of using catecholamine: 57.0% (49/86) vs. 38.5% (20/52), the proportion of bacteremia: 32.6%(28/86) vs.17.3%(9/52), all P < 0.05], Alb level was significantly lower than that in the non-gastrointestinal dysfunction group (g/L: 24.15±5.75 vs. 26.55±5.68, P < 0.05). Logistic regression analysis showed that the use of catecholamine, Alb level, bacteremia and SOFA score in ICU were the risk factors for occurrence of gastrointestinal dysfunction in ICU patients [odd ratios (OR) were 1.128, 0.547, 1.645, 1.958, 95% confidence intervals (95% CI) were 1.052-1.219, 0.384-0.765, 1.143-2.597, 1.925-1.993, P values were 0.011, 0.017, 0.021, 0.016, respectively]. Compared with the non-gastrointestinal dysfunction group, the incidence of bedsore, the proportion of energy intake unable to reach the target, the length of stay in ICU and the mortality in gastrointestinal dysfunction group were significantly increased [the incidence of bedsore: 53.5% (46/86) vs. 30.8% (16/52), the proportion of intake unable to reach the target: 27.9% (24/86) vs. 5.8% (3/52), the length of stay in ICU (days): 22.5±17.8 vs. 16.0±11.5, mortality rate: 51.2% (44/86) vs. 34.6% (18/52), all P < 0.05]. ROC curve analysis showed that the use of catecholamine, bacteremia present or not, Alb level and SOFA score showed certain extents of predictive values for the occurrence of gastrointestinal dysfunction in critically ill patients the area under ROC curve (AUC) were 0.794, 0.712, 0.705 and 0.882, respectively, 95% confidence interval (95% CI) were 0.708-0.880, 0.609-0.816, 0.579-0.830, 0.801-0.962, sensitivity were 58.8%, 42.5%, 76.3%, 75.0%, specificity were 100%, 60%, 100%, 85%, all P < 0.05. Conclusions The use of catecholamine, Alb level, bacteremia and high SOFA score are the risk factors of gastrointestinal dysfunction in critically ill patients. Prevention of gastrointestinal motility disorder can improve the treatment success rate of critical patients.

Objective To establish a reliable pretreatment method for the detection of mequindox and its metabolite in pork luncheon meat by ultra-performance liquid chromatography/triple qudrupole tandem mass spectrometry. Methods Samples were extracted with ethyl acetate, and the results of purification and enrichment by PAX and PEP solid-phase extraction columns were analyzed. Acetonitrile/methanol (3:11) - 0.1% formic acid water was used as the mobile phase, and Shimadzu Inertsil ODS-3-column (3µm, 2.1 × 100mm) chromatographic columns were used for qualitative and quantitative analysis using the multi-reaction detection positive ion mode. Results The results showed that PEP cartridge had good recovery rate. The detection limit of mequindox was 0.10µg/kg, and limit of quantitation was 0.30µg/kg. The average recoveries for spiked levels of 0.33, 0.83, and 1.65µg/kg were 127%, 72.0%, and 60.1%, respectively. The detection limit of 2-quinoxalinecarboxylic acid was 0.10µg/kg, and limit of quantitation was 0.40µg/kg. The average recoveries for spiked levels of 0.42, 1.05, and 2.1µg/kg were 125%, 99.0%, and 60.9%, respectively. Conclusion This method is suitable for the determination of mequindox and its metabolite 2-quinoxalinecarboxylic acid in luncheon meat.