Adult ; Aged ; Airway Management ; Cyanides ; poisoning ; Female ; Humans ; Male ; Middle Aged ; Poisoning ; nursing ; Young Adult

Adipates ; analysis ; Air Pollutants, Occupational ; analysis ; Esters ; analysis ; Gas Chromatography-Mass Spectrometry ; methods ; Phthalic Acids ; analysis ; Workplace

Objective To analyze MRI features of breast intraductal papilloma,to improve the acquaintance of this disease.Methods The preoperative MRI images (T2 WI-SPAIR,DWI,ADC,TIC and MIP)of eight patients with breast intraductal papilloma confirmed by surgery were reviewed retrospectively,which were compared with the postoperative pathology.The morphology,distribution, enhanced methods and signal characteristics of the lesion were summarized.Results Of 8 cases,the lession was dormant,and MRI revealed three patterns:the first type was occult papilloma,which presented distention of ducts and no solid nodule in 3 cases (37.5%);the second type showed tiny nodules in bar-like dilatation of ducts in 3 cases (37.5%);and the third type presented small round nodules scattering distribued in terminal ductules in 2 cases (25%).The maximum diameter of nodular lesions was 0.4-1.0 cm(average 0.7 cm).The lesions on T2 WI-SPAIR showed equal signal intensity or mixed signals with isointensity/hypointensity,and dilatation catheter.enhancement. The ADC and TIC value were various,therefore,diagnosis of the tumor should be combined with morphology and associated symptoms. Conclusion At early stage,the occult focus of breast intraductal papilloma can be sensitively detected and localized on MRI.It reveals that MRI has advantage in showing morphology of lesion and functional imaging,which is of important value in clinical diagnosis and early treatment.

OBJECTIVE:To establish a method for the content determination of cabozantinib in its raw material. METHODS:RP-HPLC method was adopted. The determination was performed on Inertsil ODS-SP C18 column with mobile phase consisted of acetonitrile-0.02 mol/L ammonium acetate buffer (pH 5.2,52:48,V/V) at the flow rate of 1.0 mL/min. Detection wavelength was set at 241 nm,the column temperature was 38 ℃,and sample size was 20 μL. RESULTS:The linear range of cabozantinib were 9.88-49.40 μg/mL(r=0.9999). The limit of quantitation was 11.46 ng,and the limit of detection was 3.36 ng. The RSDs of preci-sion,stability,repeatability tests were all lower than 2.0%;recoveries were 98.5%-101.7%(RSD=1.2%,n=9). CONCLU-SIONS:The method is simple,accurate and suitable for the content determination of cabozantinib in its raw material.

Objective To explore the predicative value of transvaginal ultrasonography and 48 hours blood HCG ratio for ectopic pregnancy(EP).Methods A total of 90 patients in our hospital from June 2014 to May 2016 were selected as the object according to the pregnancy result and postoperative pathology (40 cases in EP group and 50 cases in control group).The endometrial thickness was measured through transvaginal ultrasonography while blood HCG was detected by chemiluminescence technique and 48 hours blood HCG ratio was calculated.To evaluate the individual and combined predicative value of endometrial thickness and 48 hours blood HCG ratio for EP,receiver operating characteristic curves(ROC) were generated and logistic regression analysis was conducted.Results The endometriam thickness and 48 h blood HCG ratio of EP group were (11.75 ± 3.42) mm and (1.06 ± 0.38) ％,respectively,which were lower than (15.52 ± 3.98) mm and (1.46 ± 0.20)％ of control group,the differences were statistically significant (P =0.000).The AUCs and their corresponding 95％ confidential intervals(CI) were 0.77[95％ CI(0.67,0.87)] and 0.82[95％ CI(0.73,0.91)],respectively.Combined ROC analysis based on the 2 indexes revealed an elevated AUC of 0.89 [95％ CI(0.83,0.95)],the differences were statistically significant(P =0.04).Conclusion The endometrial thickness and 48 hours blood HCG ratio can be acted as useful predicative biomarkers for detection of EP.A combination of the two indexes could be a useful predicative biomarker for future clinical trials with EP and may act as a suitable add-on biomarker to the panel of methods already existing for EP.

Objective:To investigate the possibility of miR-125b in serum as a novel tumor marker for primary hepatocellular car-cinoma (HCC) and the diagnosis value of combined detection of miR-125b and alpha-fetoprotein (AFP) for HCC. Methods:We detected serum miR-125b expression of 65 cases of HCC patients and 30 cases of healthy controls by real-time quantitative PCR. Moreover, we analyzed the significance of miR-125b and explored the relationship between miR-125b and clinical pathological factors. Results:The level of miRNA-125b was down regulated in serum of HCC patients compared with healthy controls which showed significant differences (P<0.05). Furthermore, the expression of miRNA-125b has no distinct correlation with sex, age, HbsAg, AFP, ALT andα-GGT, which had no significant differences (P>0.05). The expression level of miRNA-125b correlated the difference with liver Cirrhosis, tumor size and tumor node metastasis (TNM) stages, which were considered significant differences (P<0.05). The receiver operating characteristic (ROC) curve analysis of serum miR-125b for the diagnosis of HCC yielded AUC of 0.917(95%CI:0.851~0.960, P<0.001)with 85.9%sensitivity and 93.5%specificity. The ROC curve analysis of combined miR-125b and AFP for HCC detection yielded AUC of 0.951(95%CI:0.894~0.982, P<0.001)with 92.9%sensitivity and 93.5%specificity. The ROC curve analysis of serum miR-125b as biomarkers for the group (AFP<20μg/L) of HCC yielded AUC of 0.889(95%CI:0.776~0.957, P<0.001)with 84.0%sensitivity and 87.1%specificity. Conclusion:Serum miRNA-125b combined with AFP has considerable clinical value for the early diagnosis of primary HCC.

Objective To investigate the roles of adrenomedullin(ADM) and endothelin-1(ET-1) in left-to-right shunt congenital heart disease(CHD) complicated with congestive heart failure(CHF).Methods Plasma ADM and ET-1 concentrations were measured by radioimmunoassay in heart failure stage and recovery period of 18 infants with left-to-right shunt CHD.Also 20 healthy infants acted as control group were measured.Results Plasma concentrations of ADM and EF-1 were significantly higher in heart failure stage of left-to-right CHD infants than those in their recovery period,and both in their heart failure stage and in their recovery period were higher than that in control group(P

Air Pollutants, Occupational ; analysis ; Environmental Monitoring ; methods ; Sulfur Oxides ; analysis ; Workplace

OBJECTIVETo observe the effect of Tetramethyl pyrazine (TMP) on the cytokines and inflammatory mediators in the serum and the synovial fluid of collagen-induced arthritis (CIA)rats, and further to investigate its possible mechanisms for treating rheumatoid arthritis (RA).

METHODSType II CIA rat model was established. Rats in the TMP group were administered with TMP at 50 mg/kg and 100 mg/kg, once daily. Dexamethasone at 2.0 mg/kg was intramuscularly injected to those in the Dexamethasone treated group, once daily. Normal saline at 2 mL/kg was given to those in the normal control group and the model group, once daily. All medication was started from the 7th day, lasting to the 35th day. CIA rats' foot swelling degree was observed. Contents of serum IL-1, IL-6, IL-2, NO and PGE2in the synovial fluid were detected by radioimmunoassay and nitrate reduction method.

RESULTSCompared with the normal group, the foot swelling obviously increased, contents of NO and PGE2 in the synovial fluid were obviously elevated in the model group (P < 0.01). Compared with the model group, the foot swelling could be obviously inhibited by 100 mg/kg TMP and Dexamethasone; serum levels of IL-1 and IL-6 obviously decreased, serum IL-2 level obviously increased, contents of NO and PGE, decreased (P < 0.01). TMP 50 mg/kg could obviously inhibit the foot swelling of CIA rats (P < 0.01). There was no statistical difference in other indices (P > 0.05).

CONCLUSIONSTMP at 100 mg/kg showed obvious inhibition on CIA rats. Its inhibitory effect might be correlated to inhibiting activities of endogenous cytokines and the generation of inflammatory mediators in inflammation local regions, improving contents of anti-inflammation cytokines, and inducing the balance of the inflammatory cytokine network.

Animals ; Arthritis, Experimental ; blood ; metabolism ; Dinoprostone ; metabolism ; Female ; Interleukin-1beta ; blood ; Interleukin-2 ; blood ; Interleukin-6 ; blood ; Male ; Nitric Oxide ; metabolism ; Pyrazines ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Synovial Fluid ; metabolism

Objective To learn the effect on carcinoma xenograft in nude mice by inhibiting human papillomavirus 16(HPV16) E6 gene expression in CaSki cell. Methods The recombinant plasmids expressing HPV16 E6 small interference RNA (siRNA) were transfected into CaSki cell. The cells expressing recombinant plasmid was screened out with G418. The expression of E6 mRNA was determined by RT-PCR. The cells were inoculated into BALB/c nude mice subcutaneouly and the growth of the xenograft carcinoma was observed. After the pGensil-CH2 recombinant was injected into the carcinoma, the growth of carcinoma and pathological changes of carcinoma were observed. Results The CaSki cell expressing E6 siRNA was obtained, and HPV16 E6 mRNA expression in CaSki cell was down-regulated. The oncogenicity of the CaSki cell expressing E6 siRNA was degraded, the inhibition rate was up to 71.4% as compared with that of control group. The growth of tumor in nude mice was inhibited after the E6 siRNA plasmids were injected into the nude mice. The volume and weight of the tumor treated by siRNA were smaller than that of control group significantly. More necrotic area and less cell division phase were observed under light microscope in the E6 siRNA treated tumor. Conclusion The oncogenicity of the CaSki cell was degraded after silencing HPV16 E6 gene in CaSki cell by E6 siRNA.