Objective To evaluate the clinical value of SAA by detecting their expression levels in patients with lung cancer and the analysis of the relativity of SAA for early diagnosis.Methods There are 243 cases specimens obtained from lung cancer patients who were newly diagnosed and without any treatment in Zhejiang Cancer Hospital from April 2014 to June 2015.The 243 lung cancer individuals were 147 male, and 96 female, their ages ranged from 29 to 85 years, with an average age of 63 years.The distribution of pathological type was as follows:95 patients were adenocarcinoma, 102 patients were squamous carcinoma, and 46 patients were small cell carcinoma.The distribution of TNM staging systems was as follows: 59 patients in stage 1and stage 2, 54 patients in stage 3, and 130 patients in stage 4.While 179 cases physical examination as the control.There were 94 individuals male, and 85 individuals female.Their ages ranged from 26 to 86 years, with an average age of 61 years.By using latex enhanced immune turbidimetric method, serum SAA concentrations in patients with lung cancer and healthy controls were checked on the Hitachi-7600 automated chemistry analyzer ( Hitachi ).The comparisons of all analyses values between healthy controls and lung cancer were estimated by two independent samples nonparametric tests ( Mann-Whitney U).The association between SAA and lung cancer prognostic factors such as age, smoking status and metastasis, was evaluated by spearman correlation and multivariate analysis.Results The median and interquartile spacing of SAA concentration was 42.36 mg/L (9.35, 74.22) in lung cancer patients.While 24 mg/L ( 3.25, 21.45 ).The median level of SAA in lung cancer patients (42.36 mg/L) were significantly higher than in healthy controls (11.24 mg/L), and difference reached statistically significant (Z=-2.403,P=0.006).Nevertheless, there was no significant difference in SAA concentrations among the different pathological types(Z=-1.013, P=0.339), ages (Z=0.578, P=0.458) and gender(Z=0.726, P=0.246) of lung cancer patients.While the level of SAA in has smoking status (Z=-2.282, P=0.013) and distant metastasis (Z=-2.138, P=0.017) of lung cancer was higher.By drawing ROC curve, the cut off value of SAA in distinguishing lung cancer with healthy control was 14.48 mg/L.Meanwhile, the AUC was 0.811, the accuracy is 89.12% and the sensitivity was 88.73%.Serum concentration was positively related with smoking status ( r =0.331, P =0.018 ) and distant metastasis ( r =0.372, P=0.015 ) by Spearman correlation analysis .Conclusion Serum SAA concentrations may contribute to the auxiliary diagnosis of lung cancer, evaluate the clinical stage and distant metastases of lung cancer.

OBJECTIVEThis study aims to observe and compare the influences of the casting alloy post and cores on magnetic resonance imaging (MRI).

METHODSSix casting alloy post and sores were fabricated for the experimental groups, and zirconia post and core served as the control. The seven types of post and cores were of the same size and shape. Each post and core was orally fastened to a volunteer and then imaged with sequences of T1-weighted spin echo imaging (SE-T1WI), T2-weighted turbo spin-echo imaging (TSE-T2WI), and diffusion weighted imaging (DWI).

RESULTSCobalt chromium alloy post and core generated severe artifacts, whereas gold palladium alloy post and core generated no obvious artifacts, and no difference was observed between the zirconia and the gold palladium alloy post and cores (P > 0.05). The pure titanium alloy post and core produced mild artifacts. The post and cores of the titanium, nickel-cadmium, and gold platinum alloys generated moderate artifacts with no significant differences (P > 0.05).

CONCLUSIONDifferent metal post and cores have different influences on MRI. With the exception of that generated by cobalt chromium alloy, the artifact generated by the single-alloy post and core does not influence the image of the normal head and neck.

In the bioelectric measurement, the electrode impedance detection is an important index to the signal quality evaluation and sensor electrode contact condition. In this paper, a method of accurately measuring the electrode impedance based on EEG measurement system was put forward, the method is based on the constant current source excitation signals which are added to the human body, by monitoring the human voltage to measure the electrode impedance. And different reference resistor calibration calculation in different sections was used to reduce the effect of constant current source on the precision of measurement results to improve the measurement accuracy.
Calibration ; Electric Impedance ; Electroencephalography

Adult ; Dust ; Humans ; Middle Aged ; Noise, Occupational ; Occupational Diseases ; epidemiology ; Risk Factors ; Welding ; Workplace ; Young Adult

Objective To evaluate the effect on treatment of multiple myeloma complicating femoral neck fracture by surgical intervention combined with drugs.Methods Twelve patients with multiple myeloma complicating femoral neck fracture were treated by cemented total hip arthroplasty femoral head shank.All of patients were received zoledronic acid treatment,at the same time,7 cases of them treated by MPT regimen (melphalan,methylprednisolone and thalidomide),3 by bortezomib combined with dexamethasone,and 1 by autologous peripheral blood stem cell transplantation.Results Twelve patients could tolerate surgery,postoperative pain was significantly reduced.Assessed by using Harris hip function score after 6 months operation,2 cases were excellent,7 cases were good,3 cases were common,excellent and good rate was 75％ (9/12).All patients were followed up for 8 months to 3 years,1 case of local recurrence after 13 months.1-year overall survival rate was 100％,2-year overall survival rate was 83％,and 3-year overall survival rate was 67％.Conclusions Multiple myeloma complicating femoral neck fracture,using bone cement in total hip arthroplasty femoral head shank to clear the local tumor lesions,receive reconstruction capability,rapid postoperative recovery,pain relief,and opportunities for further comprehensive treatments.The bisphosphonate can promote new bone formation and prevent further fractures.The surgical intervention combined with chemotherapy could relieve the symptoms,reduce tumor cell burden,improve quality of life and prolong survival time.

Objective: To study the immunosuppression function of a novel HLA-derived pepride, RDP1258,and it' s mechanisms. Methods:A peptide derived from HLA,RDP1258,was chemically synthesized.The effects of the peptide on alloreactive cytotoxic activities of rat splenocytes were observed using 3H-TdR method.The heme oxygenase-1(HO-1) activity was analyzed by the enzyme chemistry method.Results:The results showed that the synthetic HLA-derived peptide can obviusly inhibit the proliferation of rat splenocytes and the peptide inhibited HO-1 activty in a dose-dependment manner in vitro.Conclusion:HO-1 might participate in the RDP1258 inhibiting the proliferation of rat splenocytes induced by mitogen and isoantigen.

Objective To investigate whether the sort of drugs causing drug eruptions complicated with drug-induced liver dysfunction are the same as those causing drug eruptions. Methods Sixty-one cases of drug eruption complicated with drug-induced liver dysfunction in 261 cases confirmed as drug eruptions from January 1998 to March 2003 were analyzed retrospectively. Results The major hepatotoxic drugs in these cases were antivirus drugs (60%, 9/15), antituberculosis drugs (66.67%, 8/12), zyloric (55.56%, 5/9), and some traditional Chinese medicines (31.58%, 6/19). Conclusion The sort of drugs causing drug eruptions complicated with drug-induced liver dysfunction are the same as those causing drug eruptions, which should be taken into consideration in clinical medication.

Objective To investigate the effect of quorum sensing autoinducer 3OC12-HSL of Pseudomonas aeruginosa on the apoptosis of Caco-2 cells and its mechanism. Methods Caco-2 cells were incubated with 3OC12-HSL for 4 h and then examined by MTT method for cytoactivities. Flow cytometry was used to analyze apoptosis rate of Caco-2 cells. Expression of apoptosis associated proteins p-p38/MAPK and NF-κB were detected by Western blot. Results After exposure to 3OC12-HSL for 4 h, cytoactivities of Caco-2 cells was reduced(P<0.05) with dose-dependent pattern, and higher dose of 3OC12-HSL leaded to increasing apoptosis rate of Caco-2 cells(P<0.05). 3OC12-HSL raised expression of apoptosis associated proteins p-p38/MAPK and NF-κB detected by Western blot. Conclusion Quorum sensing autoinducer 3OC12-HSL can effect cytoactivities of Caco-2 cells and may induce its apoptosis by enhancing the expression of p-p38/MAPK and NF-κB protein.

Objective:To observe the influence of commonly used dental cast metal posts and cores on magnetic resonance imaging (MRI)for head and neck.Methods:Six kinds of posts and cores made of metal alloy (Ni-Cr alloy,Co-Cr alloy,titanium alloy,pure titanium,Pd-Au alloy and Au-Pt alloy)were respectively fixed on the mucosa of left palate of a volunteer.The maxillofacial region of the subjects was scanned by routine head sequences SE-T1WI and TSE-T2WI respectively.Results:ANOVA of factorial design analy-sis indicated significant differences of artifacts among metal materials(F=153.63,P<0.05),scanning sequences(F=70.94,P<0.05)and the number of cast posts and cores(F=102.73,P<0.05).In both sequences the size of metal artifacts were as following:Pd -Au alloy>Co-Cr alloy>Ni-Cr alloy>Au-Pt alloy>titanium alloy>pure titanium;two posts and cores>one post and core;SE-T1WI>TSE-T2WI.Conclusion:Different cast metal posts and cores have different influences on MRI artifact.Reasonably choosing the metal materials and scanning sequences can minimize artifacts on MRI.

Objective To summarize the efficacy of cervical pedicle screw fixation in the treatment of cervical spinal cord injury without fracture and dislocation.Methods From September 2007 to March 2010,21 patients with cervical spinal cord injury without fracture and dislocation combined with developmental cervical stenosis were managed by pedicle screw fixation in unstable segments,and then single open-door laminoplasty in stenosis segments.The clinical outcomes were reviewed and summarized.Results All the patients received follow-up of 1-3 years.Two patients had superficial wound infection,which was cured by dressing change.One presented intra-incisional hematoma one week post-operatively and was cured by hemostasis and drainage.One had door-reclosing without symptom aggravation.There was neither perforation of pedicle screws nor breakage,loosening or displacement of internal fixation.The curvature of cervical lordosis at follow-up had significant rectification in comparison with that at preoperation,but showed unobvious change as compared with that immediately after operation.According to the modified Japanese Orthopedic Association (JOA) score,the neurological score improved from preoperative 4-15 points to 9-17 points at the final follow-up,which revealed more than 80％ of recovery in 13 patients,50％ -80％ of recovery in six and 5％ -50％ of recovery in two,with the average recovery rate of 75％.Conclusion For unstable segments in patients with cervical spinal cord injury without fracture and dislocation combined with developmental spinal stenosis,posterior pedicle screw fixation can avoid the risk of further spinal cord injury in single open-door laminoplasty and restore the physiological curvature of cervical vertebrae,which provides solid foundation for backward drift of spinal cord and creates favorable condition for recovery of spinal cord function.