Objective:To assess the association between preoperative neutrophil–lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), and red cell distribution width (RDW) and the tumor pathological features in gastric cancer (GC) patients. Methods: We re-viewed the records of 434 patients from 2012 to 2014 in Fujian Cancer Hospital. All patients were admitted to the hospital for the first time, and no patients received any cancer-specific pretreatment. For comparison, 309 age-and gender-matched healthy individuals who underwent annual physical examination at the hospital and 342 patients with chronic atrophic gastritis were enrolled. Results:GC patients had higher NLR, PLR, and RDW than the controls (P<0.000 1). Elevated NLR, PLR, and RDW were associated with the develop-ment of tumor stages as indicated by the Kruskal-Wallis analysis. However, no similar association was observed between the tumor dif-ferentiation grade and location and those three markers. Multivariate regression analysis further revealed that both NLR and PLR were independent predicting factors for either the tumor TNM or T stage (P<0.000 1). ROC curve analysis showed that NLR and PLR had a certain diagnostic effect on the preoperative T staging of GC. Conclusion:The preoperative NLR and PLR levels are closely correlated with the tumor TNM stages in GC patients. Both these parameters have potential values as markers to assist either in early diagnosis or preoperative tumor stage evaluation in GC.

A novel Cu-IUDs material, PU/PEG/Cu nanocomposite, was prepared by melt blending method with thermoplastic polyurethane (PU) as the matrix, with polyethylene glycol (PEG) as a hydrophilic modifier, and with nanometer particles of copper as active matter instead of copper wire or copper tube. The structure, morphology, mechanical properties, thermal stability and water absorption were investigated by using FT-IR, XRD, SEM and so on. The results indicated that the nanometer particles of copper were uniformly dispersed in the matrix in PU/PEG/ Cu nanocomposites. It can be seen that the water absorption ability of this nanocomposite was obviously improved while mechanical properties and thermal stability were at high levels. These results provided a good basis for the studies on the cupric ions release of the nanocomposites in future.
Biocompatible Materials ; chemistry ; Intrauterine Devices, Copper ; Nanocomposites ; chemistry ; Polyethylene Glycols ; chemistry ; Polyurethanes ; chemistry

Objective To explore the comprehensive therapy of infants with urinary calculus induced by melamine.Methods Clinical data of 228 infants(aged from 4 months to 3 years,mean age 11 months)with urinary calculus induced by melamine were analyzed. Bilateral renal calculi were found in 144 cases and one-side renal calculus in 54 cases,of which the diameter ranged from 0.5-2.5 cm.Ureteral calculi with moderate to severe hydronephrosis were found in 15 cases,of which the diameter ranged from 0.4-1.1 cm. Bladder calculi with urinary retention were found in 5 cases and urethral calculi with urinary retention in 10 cases,of which the diameter ranged from 0.5-1.3 cm. All the urinary calculi were confirmed by B-uhrasound examination and CT. Group 1 : Of the 15 cases with acute renal failure, 13 underwent shattering and dissolving renal and ureternal calculus by pelvis clysis with alkalinity drug, detaining double J tubes through ureteroscope. After operation, these patients were treated with alkalinity drugs. Two cases were treated by percutaneous nephrostomy guided by B ultrasound and underwent shattering and dissolving renal calculus by intermittent pelvis clysis with alkinity drug. Group 2:15 cases of ureteral calculus with serious nephrohydrops underwent shattering and detaining double J tubes through ureteroscope, then treated with alkalinity drug. Group 3:15 cases of infant bladder and urethral caleus with acute urinary retention were treated by EMS through ureterscope per urethra. Group 4: The rest 183 cases without urinary obstruction received 1-8 week'surine alkalization therapy. Among them, 113 cases received sodium bicarbonate 0.15 g twice per day,23 cases received potassium sodium hydrogen citrate 2.4g/d, and 47 cases received 10% potassium citrate solution 5 ml 3 times per day. Sixty-one cases who were of no effect with alkalinity drug were treated by extracorporeal shock wave lithotripsy (ESWL) and dissolving calculus with sodium bicarbonate. During treatment with alkalinity drug, urine Ph was observed by urine analysis once per day.When it exceeded 7.5, alkalinity drug. Was withdrawn. All the patients were followed up for 1 to 3 months. Statistical analysis was done with the SPSS 13.0 software. ResultsHyperdiuresis emerged 12-24 h after operation in group 1. The duration of hyperdiuresis was 24-72 h with the urine volume of 800-2500 ml/24h. Urine volume revived gradually 48--96h after operation while serum BUN and Cr revived 1-5 d after operation. Four cases with renal and ureteral calculus became almost stone-free in 1-2 weeks and 14 cases became completely stone-free in 2-4 weeks after operation. Patients of group 2 became completely stone-free in 1-2 weeks. Patients of group 3 were cured by one EMS session through ureterscope per urethra and smooth urination was seen immediately after operation. No retained calculus in the bladder and urethra was found by B ultrasound 3 days later. In the sodium bicarbonate group, 4 cases became completely stone-free in 2 weeks, 18 cases in 4 weeks, 15cases in 13 weeks. The stones lessened and faded in 34 cases and had no changes in 42 cases. In the potassiun sodium hydrogen citrate group, 4 cases became completely stone-free in 1 weeks, 7 cases in 2 weeks, 10 cases in 4 weeks, 2 cases in 6 weeks. In the potassium citrate group, 3 cases became completely stone-free in 1 weeks, 5 cases in 2 weeks, 16 cases in 4 weeks, 11 cases in 8 weeks. The stones lessened and faded in 8 cases in 8 weeks and had no changes in 4 cases. The efficacy of the sodium bicarbonate group was significantly different with the efficacy of the citrate group (P=0. 001). No significant difference was found between the potassium sodium hydrogen citrate group and the potassium citrate solution group(P=0. 372). ConclusionsConservative treatment should be employed mainly in the earlier stage for the infant urinary calculus induced by melamine . When the diagnosis of acute renal failure, moderate to severe hydronephrosis and acute lower urinary tract obstruction are established, surgical intervention should be the main method to relieve obstruction, protect renal function and resume normal rnicturition. With the development of the characteristics of the stones later,the oral dissolution therapy with alkalirtity drug could not dissolve the calculi and ESWL should be employed.

Objective To analyze the combination characteristics between Tir-IBD( intimin binding domain) and its ligand intimin or mutant intiminN916Y of EHEC O157 ∶H7.Methods The gene of TirIBD (tir-ibd) from EHEC O157 ∶H7 chromosome was cloned into pMD18-T vector.Thereafter,the amplified gene was cloned into prokaryotic expression plasmid pET-21 a (+).The recombinant pasmid pET-21 a( +)-tir-ibd was transformed into E.coli BL21 (DE3).After inducement,the protein Tir-IBD was successfully expressed and analyzed with SDS-PAGE and Western blot.It was purified by affinity chromatography and ionexchange chromatography and was coupled on the Ni-NTA chip of BIACore 3000.Then the ligand intimin and mutant intiminN916Y were flow through the chip and their combination characteristics were detected.Results In the present study,the gene of Tir-IBD(tir-ibd) was successfully cloned into pET-21a(+).The results of SDS-PAGE and Western blot assay showed that the protein was successfully expressed,which accounts for 15％ of total expression products,and its molecular weight was about 10×103.The purity was above 95％ after purification.After coupled on the Ni-NTA chip of BIACore 3000,their combination characteristics with ligand intimin and mutant intiminN916Y were successfully detected.The equilibrium binding constants Ka was obtained by fitting the data with the BIACore evaluation program ( Version 4.1 ).The result showed that the combination characteristics between Tir-IBD and intimin have some difference compared with that of mutant intiminN916Y and the difference is temperature dependent.Conclusion Tir-IBD of EHEC O157 ∶H7 was successfully constructed and purified.The method to analyze the combination characteristics between Tir-IBD and its ligand intimin or mutant was established.The combination characteristics between Tir-IBD and intimin or mutant intiminN916Y have some temperature dependent difference and the mutated amino acids residue is crucial for their receptor-ligand binding.

Objective: To evaluate the reliability and validity of warning signs checklist developed by the National Health and Family Planning Commission of the People′s Republic of China (NHFPC), so as to determine the screening effectiveness of warning signs on developmental problems of early childhood. Method: Stratified random sampling method was used to assess the reliability and validity of checklist of warning sign and 2 110 children 0 to 6 years of age(1 513 low-risk subjects and 597 high-risk subjects) were recruited from 11 provinces of China. The reliability evaluation for the warning signs included the test-retest reliability and interrater reliability. With the use of Age and Stage Questionnaire (ASQ) and Gesell Development Diagnosis Scale (GESELL) as the criterion scales, criterion validity was assessed by determining the correlation and consistency between the screening results of warning signs and the criterion scales. Result: In terms of the warning signs, the screening positive rates at different ages ranged from 10.8%(21/141) to 26.2%(51/137). The median (interquartile) testing time for each subject was 1(0.6) minute. Both the test-retest reliability and interrater reliability of warning signs reached 0.7 or above, indicating that the stability was good. In terms of validity assessment, there was remarkable consistency between ASQ and warning signs, with the Kappa value of 0.63. With the use of GESELL as criterion, it was determined that the sensitivity of warning signs in children with suspected developmental delay was 82.2%, and the specificity was 77.7%. The overall Youden index was 0.6. Conclusion The reliability and validity of warning signs checklist for screening early childhood developmental problems have met the basic requirements of psychological screening scales, with the characteristics of short testing time and easy operation. Thus, this warning signs checklist can be used for screening psychological and behavioral problems of early childhood, especially in community settings.