Objective To explore the effects of miRNA-218 on renal cell carcinoma of nude mice in vivo.Methods The pcDNA3.1-miR-218 and its control negative plasmids were stably transfected into renal cell carcinoma cell line A498 and 769-P.These cells were inoculated into nude mice in different groups to observe the changes of body and tumor and to detect the expression of miR-218 in the tissues of nude mice.Results In the A498 cells + pcDNA3.1-miR-218 transfected group,the weight loss of tumor bearing nude mice after 25 days was lower than that in the control group,and the tumor volume was smaller than that in the control group after 10 days (P ＜ 0.05).In the 769-P cells + pcDNA3.1-miR-218 transfected group,the weight loss of tumor bearing nude mice was lower than that in the control group after 19 days,and the tumor volume was smaller than that in control group after 10 days (P ＜ 0.05).The expression of miRNA-218 in bearing nude mice with A498 cells or 769-P cells transfected by miRNA-218 was significantly higher than that in the control group,and the difference was statistically significant (P ＜ 0.05).Conclusion Up-regulation of miRNA-218 expression can inhibit the growth of renal cell carcinoma of nude mice in vivo.

Objective To construct a stable expression plasmids miR-218,to lay the experimental foundation for the expression and mechanism of miR-218 in human renal cell carcinoma.Methods The primers were designed by Has-miR-218 and the miR-218 fragment were amplified by PCR,and then which was connected with the carrier pcDNA3.1 (+) to build a stable expression plasmids.The recombinant plasmids were trasfected into renal cell carcinoma cell line 769-P,and the expression of miR-218 in these cells were detected.Results The plasmids were constructat successfully,which was determind by enzyme digestion and sequencing results.The constructed expression plasmids pcDNA3.1-miR-218 transfection of human renal cell carcinoma cell line 769-P,miR-218 cxpression level of cells was significantly increased after trasfected by recombinant plasmids carrying miR-218 gene (relative expression quantity was 1.64).Conclusion The miR-218 expression plasmids pcDNA3.1-miR-218 were successfully constructed,the plasmids can be applied to the study of miR-218 function and mechanism in renal cell carcinoma.

Child ; Hodgkin Disease ; therapy ; Humans

With the development of detection technology,point of care testing POCT) presents a tendency of diversity.However,the blood glucose meter and blood gas analyzer are still the major types of POCT in most hospitals.How to manage them effectively has become everyone's concern.The decrease in detection quality is caused by personnel,equipment,reagents,quality control and result reports.According to the baseline survey of POCT carried out in Guangzhou Women and Children's Medical Center,6 key points to improve the quality management were found.Meanwhile,the application of plan-do-check-action (PDCA) may allow access to an effective POCT management program.

Child ; Humans ; Lymphoma, Follicular ; diagnosis ; therapy

Gaucher Disease ; Humans

Air ; analysis ; Air Pollutants, Occupational ; analysis ; Chromatography, Gas ; methods ; Hydrocarbons, Chlorinated ; analysis

Objective To establish a method for determination of total hardness in drinking water by using automatic potentiometric titrator.Methods Dynamic equivalence point titration(DET)and monotonic equivalence point titration(MET)mode was used to determine the high total hardness and low total hardness of drinking water samples respectively.Results Used DET mode to determine the high total hardness,the relative standard deviation(RSD)was 0.69%～1.72% and the recovery rate was 101.5%～102.2%.Used MET mode to determine the low total hardness,RSD was 3.49%～4.00% and the recovery rate was 95.8%- 103.6%.Conclusion This method is rapid,simple,accurate,precise and applicable to the determination of total hardness in drinking water in low and high levels.

Syndromes constitute a core aspect in the study of Chinese medicine, and research on the concept of syndromes is important to the study of the process of modernization of traditional Chinese medicine. However, it is somewhat challenging to define a syndrome due to the complexity inherent in the subject, even with the assistance of the reductionism approach of modern medicine. Holistic and dynamic in nature and attaching much importance to functional changes, the newly emerging metabonomics is in many ways inline with the concepts of syndrome differentiation of pathological states in traditional Chinese medicine. Therefore, metabonomics has comparatively strong advantages in the very respect of revealing the natural laws of syndrome differentiation. By reviewing and analyzing the current research on the concept of syndromes and the application of metabonomic technology to exploring the essential core of syndrome differentiation, the authors illustrated the potential commonalities. This would also show the issues requiring attention between the study of syndromes and the metabonomic technology. In the meantime this study reflected the core problems in detail and put forward suggestions with regard to reaching solutions.

Objective To make clinical doctors better understanding of anaplastic large cell lymphoma(ALCL) and reduce the misdiagnosis of ALCL at an earlier stage.Methods Retrospective analysis of clinical features in 31 children with ALCL from Sep.2002 to Jan.2008,who had been misdiagnosed as other diseases at first and latterly been confirmed as ALCL by pathological study.The reasons for mis-diagnosis and the symptoms of the disease were analyzed and reviewed.Results ALCL clinical misdiagnosis rate reached to 91.2%.The reasons for misdiagnosis were:1.The fact that extra-nodal involvement present in earlier stage,which caused ALCL to have diversified clinical symptoms,and the initial symptoms were diverse.2.ALCL cells produce multiple cytokines such as IL-6,IL-9,IL-4,and others.They might make patients have symptoms like inflammation.3.The morphology of ALCL was quite variable.4.The clinical doctors and pathologists did not have frofound understandings of ALCL.5.Inapropriate usage of steroid before diagnosis was mode.Conclusions Clinical doctors should be aware of the diversity of ALCL clinical symptoms and use steroid carefully,while pathologists should pay attention to morphological varieties of ALCL and choose appropriate immunohistiochemical stain markers to avoid misdiagnose.Pathologic diagnosis should be made by more than 2 oncology centers.