A method was developed for the determination of 39 polybrominated diphenyl ethers(PBDEs) from mono- to hepta-brominated in coastal sediment by gas chromatography/mass spectrometry. The sample was extracted with a solution of dichloromethane: n-hexane( 1:1,V/V) ,followed by ultrasonic extraction for 60 min at 25℃. The clean-up step was optimized using silica gel and alumina. The detection limit of the method was in the range of 0.003 - 0.10μg/kg. The results indicate that the average recovery of the internal standard was from 66.2% to 118. 6%. The relative standard deviation RSD( % ) was from 0. 8 % to 18. 2%. The method for the detection of 39 PBDE congeners in coastal sediment was sensitive,high reproducible with satisfactory recoveries.

OBJECTIVE:To reduce and prevent the incidence of complaint events in outpatient dispensary.METHODS:The causes of patients' complaints were analyzed and the countermeasures were put forward.RESULTS & CONCLUSIONS:The complaint events mainly induced by the absence of rules and regulations for pharmacists,lack of related information and professional knowledge,unsoundness of internal management,patients' enhancement in self-protection consciousness as well medical knowledge.The countermeasures available include the following:strictly following rules and regulations and operating instruction,reinforcing legal consciousness and self-protection consciousness,shifting one's ideas and concepts,strengthen-ing service consciousness etc.

Objective To examine the difficulty and discrimination of academic skill diagnostic test(ASDT).Methods About 1000 primary school students were administered the ASDT,and data were analysed by SPSS11.0 program.Results The difficulty of sub-tests ranged from 0.49～0.78(low edition),0.52～0.86(high edition);while the discrimination of sub-tests ranged from 0.31～0.55(low edition),0.21～0.56(high edition).The coefficients for test-retest and the whole test ranged from 0.36～0.61(low edition),0.39～0.60(high edition).Conclusion ASDT developed in the present study attains acceptable psychometric properties.

0.05). Conclusion Keloid mainly contains collagens of types Ⅰand Ⅲ, which is different in arrangement and content of collagens from that in scar. Compared with immunohistochemical technique, sirus red staining and polarization microscopy is a ideal method in analysis of the collagen formation and its content in human keloid.

Objective:To explore the establishment and evaluation method of recurrent infection model of herpes simplex keratitis (HSK).Methods:To determine the optimal duration of the ultraviolet light irradiation, 12 healthy BALB/c mice were randomized into 3 minutes group, 2 minutes and 45 seconds group, and 2 minutes and 30 seconds group based on the duration of the ultraviolet light irradiation according to random number table method, with 4 mice in each group.Another 72 healthy BALB/c mice were randomized into blank control group, model group and recurrence group according to random number table method, with 24 mice in each group.The 72 mice were scratched a # symbol on their right corneas with scalpel.Then the eyes in the blank control group were treated with 5 μl of normal saline solution, while the eyes in the model group and recurrence group were treated with 5 μl of herpes simplex virus I (HSV-1) suspension.All the 72 mice were not intraperitoneally injected with HSV-1 xenogeneic serum antibody.Five weeks after the initial infection, the mice in the recurrence group were irradiated at ultraviolet B-302 nm for the optimal duration.The feasibility of establishing HSK recurrence model induced by this method was evaluated by the score of ocular surface symptoms, and the cytopathic effect (CPE) lesion analysis of Vero cells cultured in corneal wiping fluid from the mice in the model group and recurrence group.The use and care of the animals complied with the Statement of the Association for Research in Vision and Ophthalmology (ARVO). The study protocol was approved by the Ethics Committee of Shanghai University of Traditional Chinese Medicine (No.PZSHUTCM190222039).Results:The optimal duration of the ultraviolet light irradiation was 2 minutes and 45 seconds.Within one week, HSK syndromes appeared in the mice injected with HSV-1 virus in the model group and recurrence group, and then gradually disappeared after one week.Before inducing recurrence, slit lamp examination was performed, and there was no spontaneous recurrence of HSK in the model group and recurrence group.The mice in the recurrence group relapsed within one week after ultraviolet light irradiation.The symptom scores of ocular surface lesions in the blank control group, model group and recurrence group were 0.333±0.471, 1.500±0.764 and 2.667±0.943 at one day after ultraviolet light irradiation, 0.000±0.000, 0.833±0.373 and 5.167±2.267 at three days after ultraviolet light irradiation, and 0.167±0.373, 1.000±0.577 and 3.000±1.155 at seven days after ultraviolet light irradiation, respectively.The symptom score of ocular surface lesions was higher in the recurrence group than the blank group and the model group at three days after ultraviolet light irradiation, and the differences were statistically significant (both at P<0.05). Morphological changes such as floating and gathering were found in the Vero cells after being cultured in corneal wiping fluid.The positive rate of CPE lesion was 71% (17/24) in the recurrence group, which was significantly higher than 8% (2/24) in the model group, and the difference was statistically significant ( P<0.01). Combining the two indicators, the success rate of recurrence in established models could reach 71%. Conclusions:Ultraviolet light irradiation can successfully induce the recurrence of viral keratitis in HSK mice without injection of neutralizing serum antibody.

In recent years, the potential impairments of water contamination on human health have become a worldwide concern, especially the chronic impairments of organic pollutants in water on human body. The present article reviewed the important epidemiological and toxicological research achievements on the relationship between water contamination and gastric cancer in recent years internal and external, and pointed out the research directions in future.

Purpose To study the clinicopathologic feature, classification, benign or malignant histological features and differential diagnosis of extra-adrenal paraganglioma.Methods We performed a retrospective analysis of 21 cases of extra-adrenal (sympathetic and parasympathetic) paraganglioma. Histological, immunohistochemical findings, and follow-up data were reported with review of the relative literatures.Results There were 10 male and 11 female patients aged from 9 to 81 years (mean 46.5 years).Ten tumors occurred in the retroperitoneum, seven in the neck, and one case in the mediastinum, urinary bladder, spermatic cord and kidney, respectively.There were 3 cases of functional and 18 cases of non-functional paragangliomas.Histologically, the tumor was composed of chief cells and sustentacular cells. The chief cells were arranged in nests, alveolAR~-like and stereo-like structures.They were surrounded by sustentacular cells partly or completely.There was one malignant case, in which tumor cells had significant cell atypia and nuclear mitosis, and focal or diffuse necrosis, regional lymph node metastasis and blood vessel involvement were also observed.Immunohistochemical investigations revealed chief cells were intensely positive for neuroendocrine markers such as NSE, CgA, Syn and NF, but negative for CK, EMA and SMA.Sustentacular cells were positive for S-100 protein.The malignant cells were only positive for NSE and weakly positive for CgA.Eighteen cases were followed up.One patient developed to multi-organ metastasis and died.One patient was diagnosed as benign extra-adrenal paraganglioma that recurred and involved adjacent organs after 3 years.Conclusions It is generally considered that malignant potential, local invasiveness and distant metastasis are not correlated with the histological appearances of the extra-adrenal paraganglioma.So,further follow-up will be needed. It is necessary to emphasize the differential diagnoses of extra-adrenal paraganglioma from other pleiomorphic tumors.

Objective:To study the expression of DcR3 of myocardial tissue in diabetic mouse and normal rats and the impact of DcR3 recombinant protein to the expression of related molecules and myocardial cell apoptosis to discuss the action of DcR3 to myocardial cell apoptosis in Diabetic rats.Methods:Intraperitoneally injected streptozotocin one time to establish the model of Diabetic rats.Injected different doses of DcR3 recombinant protein to tail vein[1.2 mg/(rat? d),0.8 mg/(rat? d),0.4 mg/(rat? d)] 40 d. The expression of DcR3 mRNA, Fas mRNA and FasL mRNA of myocardial tissue was detected with RT-PCR;the expression of apoptosis related molecules Bcl-2 and Caspase-8 was analyzed with Western blot;the IL-1β, TNF-αand LFN-γof the blood was detected with double antibody sandwich ELISA;the percentage of myocardial cell apoptosis was observed with HE dyeing.Results:To compare the DcR3 treatment group with diabetic group,the expression DcR3 of myocardial tissue was high,the expression of Fas mRNA and FasL mRNA was descended.The Caspase-8 protein was ascended and the Bcl-2 protein was descended.The middle dose group was the most obvious.the IL-1β,TNF-αand IFN-γin the blood was descended differently in each DcR3 treatment group(P<0.05,P<0.01).The percentage of myocardial cell apoptosis was declined(P<0.05).Conclusion:DcR3 recombinant protein have the action of inhibiting the rats′myocardial cell apoptosis,the mechanism is related to competing with Fas,blocking-up FasL of inducing apoptosis, expressing DcR3 of myocardial cell,the descending of apoptosis related factors Caspase-8,the ascending of Bcl-2 and the reduction of cytokine levels.

Objective To investigate the values of serum vascular endothelial growth factor (VEGF) ,carcinoembryonic antigen (CEA) ,carbohydrate antigen 19-9 (CA19-9) and ferritin (SF) determination in assessing the efficacy of chemotherapy in patients with advanced gastric cancer .Methods Wedetermined the concentrations of serum VEGF ,CEA ,CA19-9 and SF for 85 patients with advanced gastric cancer ,before and after 1 cycles of chemotherapy and evaluated the the effect of chemotherapy after 2 cycle of chemotherapy .Results In effective group ,serum concentrations of VEGF ,CEA ,CA19-9 and SF significantly decreased after chem-otherapy cycle(P< 0 .05) ,serum VEGF and CEA concentrations significantly increased in progress group (P< 0 .05) ,serum VEGF ,CEA ,CA19-9 and SF concentrations in stable group and serum CA19-9 and SF concentrations in progress group did not change significantly(P> 0 .05) ,compared with those before chemotherapy cycle .Multiple regression analysis showed that serum CEA ,VEGF ,CA19-9 concentration changes correlated with chemotherapy efficiency ,while serum SF didn′t(t=1 .58 ,P=0 .119) . Conclusion Serum CEA ,VEGF ,CA19-9 concentration changes associated with gastric cancer chemotherapy efficiency ,which help predict the efficiency of chemotherapy .

Objective To investigate the combined detection of serum vascular endothelial growth factor (VEGF),squamous cell carcinoma antigen (SCC-Ag)and cytokeratin 19 fragment (CYFRA21-1)value in assessing the efficacy of chemotherapy in patients with advanced squamous cell carcinoma of the lung.Methods 60 cases of lung squamous cell carcinoma patients in January 2011 between June 2013 to be admitted to hospital were treated with gemcitabine plus cisplatin or carboplatin chemotherapy.Detected the levels of serum VEGF,SCC-Ag and CYFRA21-1 expression in 60 cases before and after 1 cycle of chemotherapy in patients using ELISA and immunoradiometric assay,and evaluated the efficacy evaluation with reference to RECIST criteria after 2 cycle of chemotherapy.Results Effective group serum VEGF and CYFRA21-1 levels were 413± 114 pg/ml and 14.7±9.6 ng/ml;serum VEGF and CYFRA21-1 levels after one cycle of chemotherapy were 272±131 pg/ml and 10.8±7.1 ng/ml,which decreased after chemotherapy (P<0.01).Progress group serum VEGF and CYFRA21-1 levels were 472±207 pg/ml and 18.9±17.6 ng/ml;serum VEGF and CYFRA21-1 levels after one cycle of chemotherapy were 537±219 pg/ml and 21.5±20.2 ng/ml,which increased after chemotherapy (P<0.01).Stable group serum VEGF CYFRA21-1 levels and were 419±246 pg/ml and 17.0±12.9 ng/ml;serum VEGF and CYFRA21-1 levels after one cycle of chemotherapy were 421±252 pg/ml and 16.8±11.7 ng/ml,which had no changes before and after treatment (P>0.05). Serum SCC-Ag levels before and after each treatment group difference was not statistically significant (P>0.05).Multiple regression analysis showed that serum VEGF,CYFRA2 1-1 levels and the efficacy of lung squamous were related changed (t=5.86,P<0.001;t=2.26,P=0.027),and there was no significant correlation between SCC-Ag levels changes and the effect of chemotherapy (t=1.52,P=0.133).Conclusion Serum VEGF and CYFRA21-1 expression level changes associat-ed with squamous cell carcinoma of the lung chemotherapy effect,which can advance understanding of the effect of chemo-therapy,combined with advanced squamous cell carcinoma detection of serum VEGF and chemotherapy assessment CY-FRA2 1-1 has a certain reference value.