Child ; China ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy

Antimetabolites, Antineoplastic ; pharmacology ; therapeutic use ; Drug Resistance, Neoplasm ; Humans ; Methotrexate ; pharmacology ; therapeutic use ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy

Objective To improve the probability of early diagnosis and treatment on leukemia combined with hepatosplenic abscesses and to reduce the mortality of leukemia in relation to infection.Methods Nineteen children,who were diagnosed and treated as leukemia combined with hepatosplenic abscesses in Hematology Center of Beijing Children′s Hospital from Jan.2000 and Dec.2007,were selected.Data of them including presenting signs and symptoms,proof of diagnosis,culture data,treatment modality,opportunity of recovering chemotherapy,following up data and so on were reviewed.Results The neutrophil counts were more than 1.0?109 L-1 in all children when hepatosplenic abscesses were diagnosed by means of images.Positive blood cultures were found in 7 children and positive pharyngeal or stool cultures were found in 8 children.Sonographic-guided hepatic abscess biopsies were operated in 3 children,but microbiologic and histologic examination were negative.According to the positive cultures or the validity of empirical antimicrobial or antifungal therapy,7 cases of fungal,7 cases of bacterial and 5 cases of bacterial/anaerobic hepatosplenic abscesses were diagnosed.During follow-up period from 10 days to 2 years and 11 months(median time was 9 months),images improved in 17 children,abscesses disappeared in 10 children and chemotherapy restarted in 84% children.Conclusions The images should be taken opportunely when neutropenia recovered in neutropenic patients with prolonged fever.As blood cultures were often negative,the clinician must pay more attention to the other positive cultures involvement.Early biopsy is advised in order to obtain positive results.The prognosis of bacterial/anaerobic hepatosplenic abscesses is good by adopting an extended spectrum antimicrobial treatment.Antifungal therapy must last enough time in children with fungal hepatosplenic abscesses.Chemotherapy was advised when manifestations of hepatosplenic abscesses improved significantly,neutrophil counts recovered and images did not deteriorate.

Adolescent ; Blood Glucose ; analysis ; Diabetes Complications ; Diabetes Mellitus ; diagnosis ; Female ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; complications ; Treatment Outcome

Adolescent ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma

Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; physiopathology ; psychology ; Quality of Life ; psychology ; Survivors ; psychology

Child ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; therapy

Objective To observe the biological role and the underlying mechanisms of miR-132 in liver cancer on invasion and metastasis.Methods Real-time quantitative polymerase chain reaction (RT-qPCR) analysis was used to examine the expression of miR-132 in four liver cancer cell lines (MHCC97H,HCCLYH,MHCC97L and SMMC-7721),a normal liver cell line HL-7702,and in liver tumor tissues with or without metastases.The biological effects of miR-132 transfection on human liver can-cer cells were assessed by wound assay,matrigel counting and in vivo experiments in nude mice.Western blotting was used to detect the expression of E-cadherin,α-cadherin,vimentin,fibronectin and ZEB2 in li-ver cancer cells.Immunohistochemistry was used to detect positive expression of ZEB2 in xenograft tumors.Results The expressions of miR-132 were downregulated in the four liver cancer cell lines when compared with the normal liver cell line (P ＜ 0.05),and in the liver cancer tissues with distant metastases when compared with the tissues without metastases (P ＜ 0.05).After transfection,ectopic expressions of miR-132 markedly inhibited cell migration and invasion in liver cancer cells.When compared with the control group,the expressions of E-cadherin and α-cadherin in the miR-132 transfection group were significantly increased,but the expressions of vimentin,fibronectin and ZEB2 were decreased.In addition,the numbers of metastatic lung lesions in nude mice in the miR-132 transfection group was markedly decreased when compared with the control group.The expressions of ZEB2 in the miR-132 transfection group was also significantly decreased when compared with the control group.Conclusions Transfection of miR-132 effectively inhibited invasion and metastasis of liver cancer cells in vitro and in vivo.miR-132 may become a new target for regulation of gene expression in liver cancer.

Objective To develop a candidate reference method for the determination of serum creatinine and to evaluate the ac-curacy of conventional detection systems though method comparison to achieve traceability .Methods The candidate reference method was established according to the sarcosine oxidase and the accuracy and reliability of the method was verified through par-ticipation in international reference laboratories EQA activities (IFCC-RELA) .20 fresh single human serum samples with different concentration and calibrator were simultaneously measured by using conventional detection system and candidate reference method . Results The calibration curve for serum creatinine was linear in the concentration range from 50-2 000 μmol/L with a correlation coefficient of 0 .999 9 under the optimum experimental conditions (the linear equation was Y=0 .000 884 2X-0 .000 325 3) and the imprecision was less than 1 .0% .The proposed method has been applied to the determination of RELA samples with satisfactory re-sults .The measured results with conventional detection systems were consistent with candidate reference method ,and the slope of the regression equation was 1 .005 6 .Conclusion The candidate reference method of serum creatinine is successfully established and which can be used for traceability and standardization .It may provide an effective way for conventional detection system traceable to the reference method or reference material .

Objective To investigate the pathological diagnosis of high-grade intraepithelial neoplasia in gastric biopsy.MethodsOne hundred and forty-three cases diagnosed by gastric biopsy as high-grade intraepithelial neoplasia were analyzed by light microscopy,and were compared with the pathological findings of surgical specimens in 60 cases and a second biopsy in 13 cases.Results Among the sixty cases treated surgically following the gastric biopsies,no carcinoma was found in 6,while the other 54 were diagnosed as gastric adenocarcinoma,27 in advanced stage and 27 in early stage,respectively.Fifteen cases were well-differentiated,24 moderately-differentiated,12 poorly-differentiated and 3 were of mucinous type.Four of the 13 cases with a second biopsy were diagnosed as well-differentiated adenocarcinoma,8 low-grade intraepithelial neoplasia and 1 chronic inflammation.The colorectal adenomas-like changes were morphologically found in 6 surgically-treated cases without carcinoma,5 of whom mucous muscles were not found by biopsy.Fibroblastic reactions were found in 9 cases,all of which were diagnosed as adenocarcinoma in surgical specimens.Conclusion Ninety percent of the cases who are diagnosed as high-grade intraepithelial neoplasia by biopsy may have already been complicated with adenocarcinoma.The location and depth of the specimen in gastric biopsy have a considerable influence on pathological diagnosis.The fibroblastic reaction may be considered as an important marker for gastric adenocarcinoma in pathological diagnosis of gastric biopsy.