OBJECTIVE:To establish a method for the simultaneous determination of uracil,hypoxanthine,xanthine,uridine and adenosine in Eisenia foetida. METHODS:HPLC was performed on the column of Venusil XBP C18 with mobile phase of 50%methanol-0.01 mol/L potassium dihydrogen phosphate solution(gradient elution)at a flow rate of 1.0 ml/min. The detection wave-length was 254 nm with a column temperature at 30 ℃,and the injection volume was 10 μl. RESULTS:The linear range was 0.05-1.60 μg for uracil(r=0.9991),0.05-1.60 μg for hypoxanthine(r=0.9993),0.002-0.010 μg for xanthine(r=0.9991), 0.0075-0.24 μg for uridine(r=0.9999)and 0.0250-0.80 μg for adenosine(r=0.9990);RSDs of precision,stability and accuracy tests were lower than 3%;recoveries were 98.30%-100.76%(RSD=0.8%,n=9),98.68%-100.96%(RSD=0.8%,n=9), 95.16%-97.67%(RSD=0.9%,n=9),96.15%-99.57%(RSD=1.5%,n=9)and 96.39%-101.93%(RSD=1.8%,n=9),respective-ly. CONCLUSIONS:The method is simple and stable with good reproducibility,and can be used for the simultaneous determina-tion of uracil,hypoxanthine,xanthine,uridine and adenosine in E. foetida.

This paper proposed a real-time monitoring system for running status of medical monitors based on the internet of things. In the aspect of hardware, a solution of ZigBee networks plus 470 MHz networks is proposed. In the aspect of software, graphical display of monitoring interface and real-time equipment failure alarm is implemented. The system has the function of remote equipment failure detection and wireless localization, which provides a practical and effective method for medical equipment management.
Computer Systems ; Equipment Design ; Internet ; Monitoring, Physiologic ; instrumentation ; Telemetry ; instrumentation

Objective To investigate the effect of live Lactobacillus acidophilus on Caco-2 cells to release pro-inflammatory cytokines IL-6 and IL-8.Methods Caco-2 cells were cultured for 2 h with live Lactobacillus acidophilus strain 1950103-12 and examined by reverse transcription-PCR for IL-6 and TNF-α induced IL-8 expression.An enzyme-linked immunosorbent assay was used to quantitate secreted IL-6 and IL-8.Results Lactobacillus acidophilus strain 1950103-12 had no ecffect on the mRNA expression and production of IL-6 and IL-8 in the Caco-2 cells.A significant mRNA expression and production of IL-6 and IL-8 by the Caco-2 cells were detected after exposure to TNF-α.Lactobacillus acidophilus strain 1950103-12 down-regulated IL-6 and IL-8 mRNA expression and inhibited constitutive synthesis by Caco-2 cells of IL-6 and IL-8 that induced by TNF-α.Conclusion Lactobacillus acidophilus strain 1950103-12 has potent direct anti-inflammatory activity on human epithelial cells.

Objective To discuss the frequency distribution of single nucleotide polymorphisms (SNP) of four asthma-related gene loci in asthmatic children of Henan,and to investigate its association with genetic susceptibility to childhood asthma and some clinical phenotypes of asthma Methods Fluorogenic quantitative PCR and sequencing technique were employed to detect the frequency distributions of the SNP of the four asthma-related gene loci in 135 asthmatic children and 98 healthy controls.Results The genotype DD of angiotensin-converting enzyme (ACE)had a significantly higher frequency in the asthmatic children than in the healthy controls (x2 =26.475,P ＜ 0.01),and the frequency of D allele was also significantly higher in the asthmatic children than in the healthy controls (x2 =24.242,P ＜0.01).The genotype AG of Adrenaline receptor beta 2 subtypes (ADRB2) had a significantly higher frequency in the asthmatic children than in the healthy controls (x2 =22.505,P ＜0.01),and the frequency of allele was also significantly higher in the asthmatic children than in the healthy controls (x2 =6.759,P ＜ 0.01).Conclusions Genotype DD of ACE and genotype AG of ADRB2 are related to genetic susceptibility to childhood asthma and may be the risk factor for childhood asthma of Henan.Another two asthma genes involved in this study are not be able to repeat.

Aged ; Carcinosarcoma ; Female ; Humans ; Male ; Middle Aged ; Nose Neoplasms ; Paranasal Sinus Neoplasms ; Teratoma

p70 ribosomal protein S6 kinase (p70S6K), an important member of AGC family, is a kind of multifunctional Ser/Thr kinases, which plays an important role in mTOR signaling cascade. The p70 ribosomal protein S6 kinase is closely associated with diverse cellular processes such as protein synthesis, mRNA processing, glucose homeostasis, cell growth and apoptosis. Recent studies have highlighted the important role of S6K in cancer, which arose interests of scientific researchers for the design and discovery of anti-cancer agents. Herein, the mechanisms of S6K and available inhibitors are reviewed.
Antineoplastic Agents ; Humans ; Protein Kinase Inhibitors ; chemistry ; Ribosomal Protein S6 Kinases, 70-kDa ; antagonists & inhibitors ; metabolism ; Signal Transduction ; TOR Serine-Threonine Kinases

Adult ; Aged ; Female ; Humans ; Laryngeal Edema ; surgery ; Male ; Middle Aged ; Suture Techniques ; Vocal Cords ; surgery

Objective To investigate the expression of nuclear factor kappa B (NF-κB),tumor necrosis factor α (TNF-α) and interleukin6 (IL-6) in human colorectal carcinoma tissues,and to explore their clinical significances in the genesis and development of colorectal cancer.Methods Sixty cases of colorectal cancer tissues and 36 cases of colorectal adenoma tissues were collected,60 cases of paracancerous normal colorectal tissues were the controls.Immunohistochemistry SABC method was used to detect the expression of NF-κB,TNF-α and IL-6 in each group respectively.The correlation of NF-κB,TNF-α and IL-6 with clinical pathologic features of colorectal cancer was analyzed.Results In colorectal carcinoma,adjacent normal colorectal tissues and colorectal adenoma tissues the positive expression rates of NF-κB were 76.7 ％ (46/60),46.7 ％ (28/60),83.3 ％ (30/36),the positive rates of TNF-α were 70.0 ％ (42/60),36.7 ％ (22/60),66.7 ％(24/36),the positive rates of IL-6 were 80.0 ％ (48/60),43.3 ％ (26/60),61.1％ (22/36).The differences were significant in each group (all P ＜ 0.05).The expression of NF-κB was closely associated with the expression of TNF-α and IL-6 respectively.In addition,the expression of NF-κB and TNF-α were correlated with vascular invaded,lymphnode metastasis and different stages.The expression of IL-6 was correlated with lymphnode metastasis and different stages.Conclusion The over expression of NF-κB and the downriver inflammation factors have close relationship with biological behaviors of colorectal cancer.It may be considered that the pathway of NF-κB play an important role in the genesis and development of colorectal cancer.

Objective To describe the changes of thrombosed venous sinus on MRI after administration of contrast material and evaluate the sensitivity and specificity of thread-like enhancement around sinus to diagnose thrombosis in the corresponding sinus.Methods Patients with cerebral venous sinus thrombosis (CVST) admitted to our department from January 2005 to December 2014 and undergone a MRI scan with administration of contrast material were included in this study.The enhancement features of venous sinus were studied in the plane parallel to the interested sinus.The features of enhancement were classified as peripheral thread-like enhancement, partial enhancement and complete enhancement.The proportion of these three type of enhancement in thrombosed sinuses and normal sinuses were described and compared.The sensitivity and specificity of peripheral thread-like enhancement to diagnose thrombosis in corresponding sinus were calculated.The proportion of each type of enhancement was also described and compared in acute (≤ 7 d), subacute (8-30 d) and chronic (≥ 31 d) stage after onset of symptoms.Results Peripheral thread-like enhancement, partial enhancement and complete enhancement were all found in both thrombosed and normal sinuses.There was a significant difference of enhancement features between normal and thrombosed sinus in superior sagittal sinus (100％ (30/30) vs 60％ (27/45), x2 =13.789, P =0.001), left trans verse sinus, and right sigrnoid sinus.The sensitivity and specificity of peripheral thread-like enhancement to diagnose thrombosis in the corresponding sinus were 10.5％-44.4％ and 53.3％-76.7％ respectively.There was no significant difference of contrast features at different stage after onset.Conclusion The value of peripheral thread-like enhancement to diagnose CVST is limited because of low sensitivity and specificity.

Objective The article was to speed up the dissolution rate of poorly soluble drugs, reduce the configuration time and improve the allocative efficiency by analysis on factors influencing dissolution and adoption of proper allocative approaches accord-ing to different characteristics of insaluble drugs. Methods 5 insaluable drugs were chosen for the study, which were ornithine as-partate, mezlocillin sodium and sulbactam sodium, teicoplanin, omeprazole sodium injection and imipenem and cilastatin sodium.The control group were allocated by routine configuration approach, while the experiment group were improved by increasing the amount of solvent, loosing the powder inside the bottle before configuration, reducing the bubble, adopting special solvent and increasing the dis-solution temperature.Observation and comparative experiment were made on two groups along with the timing from configuration to com-plete dissolution into clear transparent liquid. Results As to the average complete dissolution time of 5 drugs, significant difference was found between two groups([42±5]s vs [246±35]s, [3±1]min vs [30±3]min, [5±1]min vs [10±3]min, [5±3]min vs [10± 5]min, [2±1]min vs [10±1]min, P<0.05).Compared with the control group, the dissolution time of 5 drugs was cut down by 83%, 90%, 50%, 50%, 80%in experiment group. Conclusion Appropriate increase of solvent, loose powder, bubble reduction, special solvent and increased solution temperature contribute to shortening the dissolution time of insoluble drugs and improving the configura-tion efficiency of pharmacy intravenous admixture.