0.05).Conclusion: Feasibility of galvanic corrosion between Fe-16Cr-2Mo soft magnetic alloy and dental alloys used in clinic application can be omitted.

0.05);the elongation (%) 470?9.5,560?8.2 and 470?5.8 (SY-1 versus SY-2 or MDX-4-4210,P

Objective:To evaluate the effects of pigment concentration on spectral reflectance of pigmented silicone elastomer.Methods: Six kinds of pigment at different concentrations was respectively added into MDX-4-4210 silicone elastomer to prepare six series of single-chroma-samples, including red, yellow, blue, brown, white and black.The pigment concentrations to base elastomer were set at 0.1, 0.2 , 0.3, 0.4, 0.5, 0.6,0.7, 0.8, 0.9 and 1.0C, respectively while other conditions were kept the same. C is the maximum pigment concentration in practical use. The target samples were also prepared. By spectrophotometer, the spectral data of the single-chroma-samples and target samples were measured.Results:With the increase of pigment concentration, the spectral reflectance of the six series of single-chroma-samples and target samples decreased.Conclusion:Increase of pigment concentration may result in decrease of spectral reflectance of single-chroma-samples and taget samples.

Objective To further master the Oncomelania hupensis snail situation in Huizhou District,so as to provide the ev-idence for improving the prevention and control work. Methods According to the prevalence of schistosomiasis in history and the characteristics of residual snail points in recent years,the snail surveys were carried out with the environmental sampling and sys-tematic sampling method in history snail environments and their surrounding suspicious environments. Results Totally 5 298 940 m2 in 12 administrative villages of 3 townships were investigated and there were 24 406 m2 snail areas at 5 remaining snail spots in 4 administrative villages. The highest snail density was 283 snails/0.1 m2,and the average density of living snails was 2.31 snails/0.1 m2. A total of 4 303 snails were captured,1 534 were checked by microscopy,and no infected snails were found. Conclu-sion The snail situation is still not stable in Huizhou District,and the monitoring of snail situation still need to be strengthened.

Objective To explore the feasibility and operation technique of endoscopic thyroid surgery. Methods A retrospective analysis was made on the clinical data of 42 patients with various thyroid diseases who were treated by endoscopic thyroidectomy.Results 41 cases were successful,1 case was converted to open operation because of operative bleeding. One case had a small area of ecchymosis in the presternal skin postoperatively, and 1 with hoarseness that recovered 3d after operation.No case of parathyroid injury or subcutaneous emphysema.The anterior cervical drain was removed 24h after operation, and patients were discharged 5d after operation.Conclusions With adherence to the indications of endoscopic thyroidectomy and operating with fine technique , endoscopic thyroidectomy is safe for the treatment of patients with thyroid disease and has a more favorable cosmetic effect.

Objective To summarize the clinical features and biological markers of critically ill children with pancreatic necrosis. Methods The clinical data of 5 ill children whose autopsy confirmed pancreatic necrosis in our hospital from 2003 to 2009 were collected and the pathological results were analyzed.Results Five cases appeared as acute onset and fever. Clinical manifestation of 2 cases included abdominal pain and 2 cases represented abdominal bulging,lots of flatulence and gastrointestinal bleeding. Four cases represented abnormal liver function and significant decrease of albumin,3 cases with increase of C-reactive protein. No case showed abnormal pancreas acoustic image of abdominal B-ultrasonography. Autopsy confirmed that 5 cases represented varying degrees necrosis of the pancreas, which complicated with the damage of adrenal gland,liver,lung,heart, spleen, kidney,intestine, thymus, mediastinal and mesenteric lymphnodes. All died in 36 hours after the children'conditions were changed. Two cases died of acute hemorrhagic necrosis of the pancreas,3 cases died of multiple organ failure based on pancreatic necrosis. Conclusion Pancreatic necrosis in critically ill children presents acute onset and short course,is prone to result in multiple organ damage or failure.

Objective To explore the correlation analysis of plasma TNF-?,D-lactate levels and serious case score and clinical significance.Methods Plasma TNF-?,D-lactate levels and results from serious case'score was contrastingly studied in 120 cases of serious sick children during hospitalization in our PICU.Results The study findings showed that the plasma TNF-? and D-lactate levels had produced an obviously influence on score.Conclusions The more high plasma TNF-? and D-lactate levels,the lower score and the more dangerous condition in children with serious disease.

Objective To explore the correlation between expression of nuclear factor kappa B (NF-kappa B) in peripheral blood monouclear cells(PBMC) and the severity of coronary artery lesion in patients with acute coronary syndrome(ACS). Methods The 81 patients were diagnosed with coronary heart disease, and all of them underwent immediate or selective coronary angiography(CAG) The nuclear protein level of activated NF-B was detected by Western blot and semi-quantity image analysis was done. Coronary angiograms were scored according to Gensini integration. The relationship between NF-κB and Gensini score was analyzed. Results The protein expression of NF-κB in PBMC in ACS group was significantly higher than that in stable angina group and control group (0.85±0.18 vs. O.75±0.21 and 0.71±0.23, F=3.72, P<0.05). The protein expression of NF-κB was not correlated with Gensini score(r=0.07, P>0.05). Conclusions The ACS patients have the activation of NF-κB in PBMC. The protein expression of NF-κB is not correlated with Gensini score, which does not suggest an implication of the severity of coronary artery.

Objective To evaluate the effect of sevoflurane on the expression of α7 nicotinic acetylcholine receptor (α7nAChR) in hippocampal neurons of rats.Methods Forty-eight pathogen-free healthy adult Sprague-Dawley rats of both sexes,weighing 210-280 g,aged 3-4 months,were divided into 4 groups (n=12 each) using a random number table:control group (group C) and 1%,3% and 5% sevoflurane groups (S1,S2 and S3 groups).In S1,S2 and S3 groups,1%,3% and 5% sevoflurane were inhaled for 1 h,respectively.Morris water maze test was performed at 1 and 7 days after anesthesia to assess the cognitive function.Six rats in each group were sacrificed after the end of the test.The brains were then removed and the hippocampi were isolated for detection of the expression of α7nAChR (by Western blot) and contents of tumor necrosis factor-alpha and interleukin-1 (by enzyme-linked immunosorbent assay).Results Compared with group C,the number of crossing the platform was significantly decreased at 1 and 7 days after anesthesia in group S1,the time of staying at the target quadrant was significantly shortened,the number of crossing the platform was decreased,and the rate of time of staying at the original platform quadrant and rate of swimming distance at the original platform quadrant were decreased at 1 and 7 days after anesthesia in S2 and S3 groups,and the contents of tumor necrosis factor-alpha and interleukin-1 were significantly increased,and the expression of α7nAChR was down-regulated at 1 and 7 days after anesthesia in S1,S2 and S3 groups (P<0.05).Compared with group S1,the expression of α7nAChR was significantly down-regulated at 1 and 7 days after anesthesia in S2 and S3 groups (P<0.05).Compared with group S2,the expression of α7nAChR was significantly down-regulated at 1 day after anesthesia in group S3 (P<0.05).There was no significant difference in each parameter of Morris water maze test among group S1,group S2 and group S3 (P>0.05).Conclusion The mechanism by which sevoflurane induces inflammatory responses in hippocampi is related to down-regulation of α7nAChR expression in hippocampal neurons of rats.

Objective To evaluate the utility of CD4+ TCR tetramers‐based flow cytometric analysis and cell climbing slice assay in detecting antigen‐specific CD14+ monocytes in the blood of tuberculosis (TB) patients .Methods CD4+ TCR tetramers were used to detect tetramer‐positive CD14+ monocytes in the peripheral blood (PBL ) samples of inpatients with advanced pulmonary TB (PTB) by flow cytometric analysis .The PBL samples obtained from non‐TB patients and umbilical cords were used as controls .These tetramers were also used to examine tetramer‐bound CD14+ monocytes and Mycobacterium tuberculosis (MTB) antigen‐specific and tetramer‐bound cells by cell climbing slice in situ staining .Results The median percentage of tetramer‐bound CD14+ monocytes in PBL samples from PTB patients ,non‐TB patients and umbilical cords were 1 .32% , 0 .50% and 0 .26% respectively by using CD4+ Vα21‐J39/Vβ29‐D1‐J2 tetramer , while the medians were 1 .05% , 0 .49% and 0 .19% respectively by using CD4+ Vα21‐J39/Vβ29‐D2‐J2 tetramer . The percentage of tetramer‐bound CD14+ monocytes in PTB patients group was significantly higher than the other two control groups .In cell climbing slice in situ staining ,tetramer‐bound CD14+ monocytes ,and MTB antigen‐specific and tetramer‐bound cells were positive in PTB tissue compared with negative in control tissues . Conclusions CD4+ TCR tetramers‐based flow cytometric analysis and cell climbing slice assay could be used to sensitively detect M TB antigen‐specific CD14+ monocytes in the blood of TB patients ,and more accurately evaluate the changing profile and clinical significance of these cells in TB patients .