Extramedullary infiltration is one of the reasons of relapse and death for leukemia patients.Reaearches increasingly show that extramedullary microenvironment plays a pivotal role on progress and relapse of leukemia.Extramedullary infiltration of leukemia is the result of interactions among many factors and many steps,involving liver,spleen,central nervous system,thymus and other tissues and organs.

Objective To assess the feasibility of K value of dynamic contrast enhanced MRI (DCE-MRI) in evaluation of anti-angiogenic effects on nude mice with orthotopic transplantation tumor model of gastric cancer.Methods Nude mice with orthotopic transplantation tumor model of gastric cancer were randomly assigned to two groups:Treatment group (n =15),mice were given apatinib intragastrically for 18 days (100 mg/kg),and control group (n=15),mice were given ddH2O2 in the same manner.After 18 days,DCE-MRI was performed and K value was measured.Then the tumors were dissected from the adjacent tissues in order to detect the microvessel density (MVD) and vascular endothelial growth factor (VEGF) expression levels.MVD and VEGF expression level were compared between treatment group and the control group.Results MVD (x2 =4.89,P＜0.05) and VEGF expression level (x2 =8.69,P＜0.01) of treatment group were much lower than those of control groups.The Kt value of treatment group was significantly lower than that of control groups ([0.63±0.05]/min vs [1.66±0.23]/min,t=17.05,P＜0.01).Conclusion The value of k in DCE-MRI can be utilized to assess the effects of apatinib on nude mice with orthotopic transplantation model of gastric cancer.

To study the effects of growth hormone on function of T lymphocytes. Methods: Tne expression plasmid PcDNA-GHcDNA was constructed,then the plasmids were transfected into Jurkat cells,on the other hand,Jurkat cells were treated with different doses ofrhGH, to investigate the effect of overexpression GH and rhGH on function of T lymphocytes. Results: Overexpression GH could increase the ex-pression of IL-2R(140％) and secretion of IL-2(160％) and IFN-γ( 198% ) in Jurkat cells after PHA activation,but these data were broughtdown by the treatment of GH antibody. rhGH could also enhancer the function of T lymphocytes after PHA activation. Conclusion: These resultssupport the idea that GH is an autocrine and paracrine factor, and can regulate the function of T lymphocytes.

0.05) than those with that of 1.0 mm (P

Objective To investigate the effects of a corrective tr ea tment on open bite malformations, such as gnash their teeth, nail-biting, tongu e thrusting, impacted tooth, cross bite with improper correction, open bite defo rmity resulted from premature shedding of deciduous tooth and molar cysts. Methods We used dental resin technology: acid etching the teeth, adh ering metal clasps to the teeth by means of composite resin, and applying elasti c bands for intermaxillary traction to correct the cross bite. Results We had treated 22 patients, age ranged from 7-30, with the malformatio ns resulted from different kinds of reasons, and obtained significant results. Conclusion With cooperation of the patients, simple corrections for open bite with sticky clasp and occlusion with elastic band are easy to car ry on, with short period of treatment time, and every patient gets prominent out come. It is effective, prior to commonly-used corrective therapy and deserves t o be widely used.

DQA1*0501.TSHR peptides of 183～198、195～210、248～263、301～320、343～362 and 357～376 could bind with high affinity to both HLA-DR3 and HLA-DQA1*0501,all of their IC50 values less than(1 ?mol/L),but they could bind to neither HLA-DR7 nor HLA-DQA1*0201 with high affinity.Conclusion Epitopes of TSHR 183～198,195～210,248～263,301～320,343～362 and 357～376 on the TSHR extracellular domain might be the auto-antigens to cause GD.

Objective:To analyze the long-term curative effect of endoscopic sinus surgery (ESS), and to study the factors related to the defeat of endoscopic sinus surgery.Method:201 cases（353 sides）of chronic sinusitis and nasal polyps were treated with ESS，and were treated by taking the nasal cavity as a whole unit.Result:Following up survey from 12 months to 24 months postoperatively，it was found that 108 cases were cured （53.7%），82 cases achieved symptomatic relief（40.8%），11 cases remained failure （5.5%）.Conclusion:It is very important to improve the ESS technique in order to reduce the recurrence of nasal polyps and sinusitis and to improve the curative effect of ESS，in addition，the treatment after operation is also indispensable to successful surgery.

Objective:To study the effects of hormones on expression of GH gene in T lymphocyte.Methods:PGL2 GH Lucaluciferase reporter gene expression plasmid with hGH gene promotor was constructed and was transfected into Jurkat cells,Hormones were put into the medium of cell culture.Results:The expression of luciferase in Jurkat cells could be inhibited by different doses of hGH and GHRH (P

Objective To define whether correlation exists between the enlargement of lateral ventricles and motor development delay. Methods Motor development was assessed with Peabody Developmental Motor Scale (PDMS) in 28 children with cerebral palsy. Correlation between computerized tomography (CT) findings of enlargement of lateral ventricles (ventricle index,body index,width index and frontal horn index) and motor quotients of PDMS(GMQ,FMQ and TMQ) was analyzed. Results Width index was correlated with all three motor quotients (GMQ,FMQ and TMQ)( P

Background:Intestinal permeability plays an important role in the development of ulcerative colitis. Sugar molecular probes is a safe and non-invasive method to measure intestinal permeability,and its correlation with inflammatory factors and claudin-8 is not clear. Aims:To explore the correlation of sugar molecular probes with TNF-α,CRP and claudin-8 in intestinal permeability in colitis rats. Methods:Twenty-four rats were assigned randomly to model group and normal control group. Colitis model was induced by DSS solution. Expressions of TNF-α,CRP were determined by ELISA,and expression of claudin-8 was determined by immunohistochemistry. Sugar molecular probes were determined by high performance liquid chromatography. Correlations of inflammatory factors and claudin-8 with sugar molecular probes were analyzed. Results:Compared with normal control group,expressions of colonic tissue TNF-α and CRP were significantly increased while expression of claudin-8 was significantly decreased in model group(P < 0. 01);secretion of lactulose and sucrolose,ratio of lactulose/ mannitol( L/ M)were significantly increased( P < 0. 01)while mannitol secretion was significantly decreased(P < 0. 01). Secretion of lactulose and sucrolose were positively correlated with expressions of TNF-α and CRP(P < 0. 01),but negatively with expression of claudin-8(P < 0. 01). L/ M ratio and mannitol secretion were negatively correlated with expressions of TNF-α and CRP(P < 0. 01),but positively with expression of claudin-8(P <0. 01). Conclusions:Sugar molecular probes and expressions of TNF-α,CRP,claudin-8 have similar results in predicting intestinal permeability in rats. Sugar molecular probes can be used as a potential method to measure intestinal permeability.