OBJECTIVETo develop a method for determination of mandelic acid (MA) and phenylglyoxylic acid (PGA) in urine by reagent-free ion chromatography.

METHODSIon chromatography was performed on an AS19 column with a gradient elution solution containing 10-35 mmoL/L KOH at a flow rate of 1.00 ml/min, and MA and PGA were detected at ultraviolet wavelengths of 225 nm and 254 nm, respectively. The samples were diluted 10 times with purified water, then purified on a silver column to remove high concentrations of chloride ion, and injected after being filtered through a 0.2-µm m filter membrane.

RESULTSThe recoveries of standard addition of MA and PGA were 96.5% and 99.3%, respectively, with both relative standard deviations less than 5.0%. Good linear relationships were noted in the range of 1.0-100.0 mg/L for both MA and PGA (r >0.9995). The detection limits of MA and PGA were 0.02 mg/L and 0.05 mg/L, respectively; the minimum detectable concentrations of MA and PGA were 0.2 mg/L and 0.5 mg/L (when the sampling amount was 5.0 ml and diluted to 50.0 ml with water, and the injection volume was 300 µL).

CONCLUSIONSThis method is fast, convenient, and highly sensitive and selective. It can be used for the analysis of MA and PGA in the urine of styrene-exposed workers.

Animals ; Conditioning (Psychology) ; drug effects ; Extinction, Psychological ; drug effects ; physiology ; Fear ; drug effects ; physiology ; Male ; Mifepristone ; pharmacology ; Rats ; Rats, Sprague-Dawley

Objective To upgrade the satisfactory degree of foreign patients by persistently improving medical treatment quality aboard hospital ship.Methods To choose 3 days and 30 foreign cases who accepted ultramarine medical treatment on hospital ship.All the cases were Pakistani or Bangladeshi.Cases were assigned into 3 kinds of queuing program and investigated the satisfactory degree using self-made questionnaire.The program of highest satisfactory degree was used in the next 3 countries.Results Analysis showed that waiting time for preliminary diagnosis,examination and total waiting time were significantly different between program C and A; waiting time for preliminary diagnosis,examination and total waiting time were significantly different between program B and A,but time for return visit increased in program B compared to that of program A.Degree of satisfaction:70.0％～76.7％ for program A,73.3％～80.0％ for program B,96.7％～100.0％ for program C.Conclusions Program C is the best method to shorten waiting time,improve order and upgrade the satisfactory degree.This research has a significant value in the enhancement of efficiency aboard hospital ship and improvement of foreign patients' satisfactory degree.

Objective To study the prevention and treatment of chylous leakage after Whipple operation.Methods Clinical data of 381 patients underwent Whipple operation from Jan 2010 to march 2013 were retrospectively analyzed.Results Among 381 patients,23 patients had chylous leakage,the incidence was 6.04％.While in 89 patients,in which intraoperative precautionary physical ligation or mattress suturing of the lymphatic vessels were undertaken,no chyle leakage occurred ; Most of chyle leakage occurred in malignant tumor after radical resection(21 patients),most chylous leakage was found 5-8 days after surgery,with daily volume of 260-450 ml.All patients of chylous leakage were cured by conservative treatment.Conclusions Chylous leakage are common in PD.Intraoperative preventive measures such as lymphatic duct ligation or safe suturing can effectively prevent chyle leakage.Conservative therapy heals most chylous leakage after Whipple operation.

Objective To observe the therapeutic effects of balloon dilatation with ice water and room temperature water on cricopharyngeal achalasia after brainstem stroke.Methods Forty dysphagic patients with cricopharyngeal achalasia after brainstem stroke were recruited.Twenty patients assigned to experimental group were treated by balloon dilatation with ice water and low frequency elecrtrical stimulation.Twenty patients assigned to control group were treated by balloon dilatation with room temperature water and low frequency electrical stimulation.Results After treatment,36 out of the 40 patients of the two groups could eat pasty food independently without choking.Videofluoroscopic swallowing study (VFSS) showed that the cricopharyngeal sphincter relaxed and the foods passed successfully when swallowing bolus,and no aspiration happened.In comparison,the level of cricopharyngeal opening,the number of patients with nasogastric tube remained and eating normally,and the scores of functional oral intake scale (FOIS) between the two groups showed no significant difference (P ＞ 0.05).The average treatment sessions,average hospitalization days and average treatment cost in treatment group were significantly less than those in the control group(P ＜0.05).Conclusion Cricopharyngeal achalasia can be treated effectively by balloon dilatation with ice water or with room temperature water combined with low frequency electrical stimulation,but treatment course of balloon dilatation with ice water were significantly shorter than that of balloon dilatation with room temperature water.

0.05).(2) Compared with NC group,there was a significant decrease in GG fatigue resistance in CIH group(P

Objective To explore the relationship between care burden and social support among family caregivers of disabled elders in Beijing urban area.Methods A cross-sectional survey based on convenience sampling was conducted among 744 family caregivers in Dongcheng District in Beijing urban area.All subjects were interviewed by the Zarit Burden Interview (ZBI),Social Support Rating Scale (SSRS) and general social and demographical material lists.And then we analyzed the correlation between social support and care burden.Results The mean scores of ZBT and SSRS were (40.3 ± 15.2) and (31.1 ± 6.9)respectively.And a negative correlation existed between the level of caregiver burden and total social support.The care burden of disability elders was negatively associated with objective support,subjective support and social support availability (P ＜ 0.05).Conclusions There is a close relationship between care burden and social support among family caregivers of disabled elders.The more objective support,subjective support and social support availability the caregivers acquire,the less burden they bear.

Aim To investigate the protective effect of compound total flavonoids on atherosclerosis in ApoE -/- knockout mice.Methods Seven-week old C57BL/6 mice considered of the normal group (n =1 5 );seven-week old ApoE -/- mice were fed with high-fat diet and were assigned randomly into 5 groups:model group,simvastatin group,the low com-pound flavonoids group,the middle compound fla-vonoids group and the high compound flavonoids group.After 1 6 weeks,mice serum and aortas were harvested.The formation of atherosclerotic plaque was analyzed by HE staining,The serum level of lipids pro-files and superoxide dismutase (SOD )were deter-rnined.The levels of IL-1 βand NF-κB in serum were detected by ELISA assay.Results Area of atheroscle-rotic lesion was significantly less in the compound fla-vones group than in model.The level of TC,TG,LDL-C,IL-1 β,NF-κB in serum of the compound flavonoids group were decreased significantly,while SOD and HDL-C increased significantly compared with the mod-el group,and the difference was significant (P <0.05).Conclusion The compound flavonoids have a good protective effect on early atherosclerosis in mice, which may be due to its alleviating effects on hyperlipi-demia and inflammation and oxidation.

Animals ; Extinction, Psychological ; physiology ; Fear ; physiology ; Male ; Mental Recall ; physiology ; Rats ; Rats, Sprague-Dawley ; Sleep Deprivation ; complications ; physiopathology ; Sleep, REM ; physiology

Objective To evaluate the efficacy and safety of near-infrared light combined with tacrolimus 0.1％ ointment in the treatment of facial glucocorticoid-dependent dermatitis.Methods A total of 68 patients with facial glucocorticoid-dependent dermatitis were enrolled from Department of Dermatology of Yantai Yuhuangding Hospital between December 2014 and December 2015,and randomly and equally divided into treatment group and combination group by a random number table.The treatment group was treated topically with tacrolimus ointment twice a day for 4 weeks.Besides the treatment with tacrolimus ointment,the combination group was irradiated with near-infrared light once a week for 4 sessions.After 4-week treatment,improvement in clinical manifestations such as itching and burning sensation was evaluated,so was the therapeutic effect.Results The combination group showed significantly higher response rate (85.3％ [29/34]) compared with the treatment group (61.8％ [21/34],x2 =4.84,P ＜ 0.05).Additionally,response rates for itching and burning sensation,erythema,scales and papules were all significantly higher in the combination group than in the treatment group (x2 =4.84,6.35,8.42 and 5.52,respectively,all P ＜ 0.05).Conclusion Near-infrared light combined with tacrolimus ointment is effective and safe for the treatment of facial glucocorticoid-dependent dermatitis.