Tumor growth depends on the tumor microenvironment(TME).Tumor-associated neutrophils(TANs)are important inflammatory cells in TME.TANs are divided intoN1type with anti-tumor effect andN2type of tumor-promoting effect.Therefore,TANs have both beneficial and harmful aspects of the body.A large number of studies have been shown that TANs affect tumor formation,metastasis,angiogenesis and immune response,regulated by the secretion of cytokines and chemokines.This review will summarize the biological characteristics of TANs,and tumor development,prognosis and treatment of tumor as well as research progress of the relationship between TANs and tumor.

Background and purpose:It was reported that nuclear factor of activated T cells (NFAT) is closely related with carcinomas. Esophageal squamous cell carcinoma (ESCC) is one of the most common carcinomas in China. The present study investigated the expression and clinical significance of NFAT isoforms in ESCC. Methods:The expression of NFAT isoforms and the differences in different pathological levels of ESCC were detected in 104 specimens of human ESCC tissues and normal esophageal tissues by immunohistochemistry. Results:This study found that the positive rates of NFAT1 (53.8%), NFAT2 (10.6%), NFAT3 (26.9%), NFAT4 (45.2%) expression were significantly higher in tumor tissues than in adjacent normal esophageal tissues (P<0.001), respectively. The positive rate of NFAT1 expression was significant-ly higher in drinkers (62.3%) than nondrinkers (37.1%, P=0.01), and also higher in patients with lymph node metastasis (68.4% vs 5.5%, P=0.002) and with late stage (58.7% vs 36.2%, P=0.02). Multivariate analysis showed that NFAT1 expression was correlated with lymph node metastasis. The positive rate of NFAT3 was significantly higher in patients with lymph node metastasis (39.4%) than in those without lymph node metastasis (19.7%, P=0.03). Conclusion:These results suggest that the overexpression of NFAT1 and NFAT3 is associated with lymph node metastasis in ESCC.

Abscess ; Cysts ; Female ; Humans ; Maxillary Sinus ; Tooth Diseases ; Young Adult

Objective To investigate the change of the fibrin monomer (FM) level in the venous thromboembolic disease (VTE).To compare the diagnostic value of FM combined Wells score with the other detection methods.Methods In this case control study,121 cases were selected from the patients who were from general and orthopeadic surgery (including thrombosis group in 60 cases and non thrombosis group in 61 cases).The patients were assessed by Wells score.From one day before surgery, Plasma d-dimer (D-D) and fibrin monomer (FM) were periodic measured by CP-2000 d-dimer and fibrin monomer.Evaluation the value of d-dimer,fibrin monomer and fibrin monomer combined with Wells score in diagnosis of venous thromboembolic disease.The receiver operation cure(ROC) was drew to determine the diagnostic performance.Results The plasma FM level of patients with VTE in the thrombus group (26.11±38.34) μg/ml is higher than the non thrombus group (6.56±6.81) μg/ml and the control group (2.37±0.89) μg/ml (t=-3.82, t=-4.78,P<0.01);the sensitivity of FM was lower than the D-D (85% vs 93%);then the positive predictive value was lower than D-D (82% vs 87%) (χ2=27.01,P=0.000)but its specificity and negative predictive value (65%) are both higher than D-D (65% vs 44%)(71% vs 62%)(χ2=11.67,P=0.001);the sensitivity,the specificity,the positive predictive value and the negative predictive value of FM combined Wells score are increased (90%,85%,83%,89%)(χ2=20.95,χ2=16.65,P<0.01).The increased level of FM is earlier than imaging changes, and the elevated of plasma D-D is not obvious in a certain period of time.Conclusions The sensitivity and specificity of FM combined with Wells′ score is higher in the diagnosis of VTE, its prediction value in the diagnosis of VTE is higher.The FM level can be changed in the early stage of VTE, which has a certain value of early diagnosis.

Objective To investigate the effect of lean management on emergency biochemistry test turnaround time(TAT) in clinical laboratories.Methods Based on the approaches of standardized operations,5S on-site management,the efficiency evaluation of batch processing and one piece flow,and visual management,the median time of each workflow,the qualified rate of emergency biochemistry test TAT,the unqualified rate in a relatively concentrated period of TAT timeout and the unqualified rate of collected samples were compared before and after optimization.Results The median times (interquartile ranges) of each workflow including sample receipt and storage,result audit and sample storage-result report before and after lean management were 30 (35) min,7 (13) min,17 (8) min and 16(19) min,5(9) min,16(7) min,respectively,and there were significant differences in the former two(all P ＜0.01) but not the third (P ＞ 0.05).The median times (interquartile ranges) of TAT before and after lean management were 63 (51) min and 46 (33) min,respectively(P ＜ 0.05).The qualified rate of TAT increased from 86.00％ to 95.37％ after lean management(P ＜ 0.01).The unqualified rates in a relatively concentrated period of TAT timeout and collected samples decreased from 3.42％ to 1.00％ (P ＜0.01) and from 0.24％ to 0.17％ (P ＜ 0.01),respectively.Conclusion Lean management may improve process efficiency,reduce errors,and shorten emergency biochemistry test TAT in clinical laboratories.

Objective To detect the optimum reaction temperature,pH,Km of N-V proteinase and determine its enzymological classification.Methods The fibrin plate method was used to determine the optimum reaction temperature and pH of N-V proteinase.The Km of N-V proteinase was detected by using Leu-pNA as substrate.E64,PMSF,zymofren and 1,10-phenanthroline were used as inhibitors to determine proteinase classification of N-V proteinase.Results The optimum reaction temperature was 50℃,pH was 8-9,Km was 1.97?10-3mol?L-1.PSMF inhibited the fibrinolytic activity of N-V proteinase(P0.05).Conclusion N-V proteinase belongs to serine proteinase.

The tumor microenvironment plays a vital role in the process of tumorigenesis and development.Studies have been confirmed that the tumor microenvironment heterogeneity has a huge impact on the tumor efficacy and drug resistance.This review summarizes the relationship between immune cells and related immune factors in tumor microenvironment as well as vascular endothelial cell heterogeneity and tumor progression and prognosis.So it is better help us understand the tumor microenvironment heterogeneity for the impact of the tumor.This will conduce to us through a variety of methods to enhance the body's anti-tunor ability by inhibi-ting and killing tumor cells.

Objective To establish normal reference intervals of plasma and urine neutrophil gelatinase-associated lipocalin (NGAL) in children′s hospital.Methods A total of 183 fresh EDTA anticoagulant samples and 125 fresh urine in healthy children were collected from May 2014 to October 2014.According to the CLSI C28-A2 ,the unilateral upper limit 95% was established the normal reference value in different age group.Results There was significant difference in four groups (P<0.05).The normal reference intervals of plasma NGAL in healthy children:0 to <7 months;<291.28 μg/L;7 months to <5 years old;<150.87 μg/L;5 years old to <9 years old:<127.93 μg/L;9 years old to ≤16 years old:<161.74 μg/L;the normal reference intervals of healthy children urine NGAL:0 to <7 months:<257.31 μg/L;7 months to <5 years old:<201.55 μg/L;5years old to <9 years old:<197.69 μg/L;9 years old to ≤16 years old:<151.46 μg/L.Plasma and urine NGAL results in neonatal group were higher than the other three groups.Conclusion The normal reference intervals of plasma and urine NGAL in children′s hospital is established.this could provide clinical evidence for the diagnosis and treatment of acute renal injury in pediatric patients.

Objective To explore neurobehavioral changes in rats with recurrent seizures and the prevention effect of melatonin.Methods 6-day-old (P6) SD rats were randomly divided into four groups of 24 (n =6):the control group (CONT),melatonin per se group (MEL),recurrent neonatal seizure group (RS) and melatonin administration prior to RS group (RS + MEL).Rats in RS group were subjected to 5 seizures with flurothyl during the first 14 days of life.In RS + MEL group,melatonin was injected at 8:00 before seizures were induced.Neurobehavioral tests including Plane righting experiment,Cliff avoidance test,the grip-strength test and negative geotaxis test were implemented on P24,while open field test on P35.Results (1) Plane righting experiment:the time of plane righting in RS group ((0.33 ± 0.51)s) was significantly shorter than that in the CONT group ((1.17 ± 0.40) s) and RS + MEL group ((0.50 ± 0.54) s) (P ＜ 0.05).(2) Cliff avoidance test:the time of cliff avoidance in RS group ((16.00 ± 6.32) s) was significantly longer than that in CONT group ((4.00 ± 2.60) s)(P ＜ 0.01),while the time of cliff avoidance in RS + MEL group ((7.67 ± 3.26) s) was shorter than that in the RS group (P ＜ 0.05).(3) The grip-strength test:compared with CONT group ((49.50 ± 28.96) s),the time needed to hold on wire in RS group((11.67 ± 7.58)s)was significantly shorter (P ＜ 0.05) and longer in RS+ MEL group ((24.83 ± 6.61) s) (P ＜ 0.05).(4) Negative geotaxis test:the time for rats to turn 180° upward in RS group((7.67 ± 1.36) s) was longer than that in the CONT group ((4.50 ± 2.66) s) and RS + MEL group ((6.17 ± 0.75) s) (P ＜ 0.05).(5) Open field test:the time for rats to begin to run in the RS group ((8.17 ± 3.86) s) was longer than that in the CONT group ((3.00 ± 1.41) s) (P ＜ 0.05).Conclusion The neurobehaviors are damaged following flurothyl-induced recurrent neonatal seizures,and melatonin can reduce the neurobehavioral injury.

Objective To compare the effects of fresh amniotic membrane (FAM), glycerol-preserved amniotic membrane (GPAM), alcohol-preserved amniotic membrane (APAM) and amniotic membrane preserved under vacuum drying condition (VXAM) on rabbit corneal alkali burn and to observe the outcomes of the grafted amniotic membrane. Methods Thirty-six New Zealand rabbits were used to establish corneal alkali burn models and then divided into 4 groups according different preserved amniotic membrane they received (FAM, GPAM, VXAM and APAM), with 9 rabbits in each group. After transplantation, we observed the changes of amniotic membrane graft, corneal opacity, corneal neovascularization (CNV) with slit lamp microscopy. The amniotic membrane graft was examined by HE staining 10 d, 14 d and 1 month after transplantation. Results One month later, FAM graft, GPAM graft and VXAM graft showed better curative effect than APAM graft. Ten days after transplantation, the amniotic membrane graft began to dissolve and desquamate, and disappeared completely till 14 d after transplantation. Amniotic membrane tissues were not found under light microscope in any rabbit. FAM graft dissolved most quickly, and APAM graft was the most slowly. The dissolution of GPAM graft and VXAM graft had no significant difference. Conclusion After amniotic membrane transplantation, it dissolves and sheds instead of fusing with recipient tissues. Corneal epithelium grows under amniotic membrane graft. Amniotic membrane graft transplantation should be called as amniotic membrane patching.