This paper introduces the present situation of condition monitoring of medical devices, states main methods of condition monitoring and puts forward the application strategies in hospitals briefly.

Object To investigate the effects of fungal elicitors derived from the fungi Fusarium solani and Aspergillum niger on the accumulation of indole alkaloids in Catharanthus roseus calli. Methods The total indole alkaloid was extracted after the calli were treated with fungal elicitors. Then, the determination of ajmalicine and catharanthine was carried out by RP HPLC. Results The two fungal elicitors stimulate the accumulation not only the total indole alkaloid but the ajmalicine and catharanthine. The optimal exposure time of the two fungal elicitors for different kinds of indole alkaloid was investigated. Conclusion The two fungal elicitors have obvious effect on the accumulation of indole alkaloid in C. roseus calli.

Humans ; Liver Cirrhosis ; diagnosis

Objective To evaluate the accuracy of ultrasonographic measurement of the transverse diameter of the cricoid cartilage in selecting the cuffed endotracheal tube (ETT) size for pediatric patients.Methods A total of 120 pediatric patients of both sexes,of American Society of Anesthesiologists physical status Ⅰ or Ⅱ,aged 1 month-6 yr,with body mass index of 10.9-31.2 kg/m2,undergoing endotracheal intubation and general anesthesia,were divided into group A and group B,with 60 pediatric patients in each group.The pediatric patients were intubated with a cuffed ETT in two groups.The ETT size was selected based on the transverse diameter of the cricoid cartilage measured by ultrasonography in group A.The ETT size was selected according to the age-based formula in group B.A tracheal leak was detected after intubation to determine whether or not the ETT size selected was appropriate.ETTs were replaced when the actually selected ones were not appropriate,and the number of replacement was recorded.The development of intubation-related complications was also recorded.Results The accurate rate of cuffed ETT size selected at the first time was 95％ in group A,and it was significantly higher than that in group B (60％) (P＜ 0.05).There was no significant difference in the incidence of intubation-related complications between the two groups (P＞0.05).Conclusion Uhrasonographic measurement of the transverse diameter of the cricoid cartilage produces higher accuracy in selecting the cuffed ETT size for pediatric patients and is worthy of clinical application.

0.05).②blood test and gastrointestinal reaction of the two groups one month after operation:The leukocytopenia(

Objective To study the relevant factors of malignant change of colorectal adenoma. Methods The clinical data of 276 cases of colorectal adenoma admitted in our hospital in recent 14 years were analyzed retrospectively . Results Malignant change rate of the adenoma in the left colon was significantly higher than that in right colon(P

Objective:To study the therapeutic effect of a novel double-target system,in which human umbilical cord-derived MSCs were used as vehicles to deliver fusion protein scFvCD20:sTRAIL to non-Hodgkin ’ s lymphoma. Methods: The traditional methods in molecular biology were used to construct lentivirus expression vectors pLenR. scFvCD20: sTRAIL and contrast vectors. Human umbilical cord-derived MSCs ( HUMSCs ) were labeled with the copGFP by transducing with pseudo viral particles which had been packaged in 293T cells with four plasmid-lentivirus packaging system. Fusion protein scFvCD20:sTRAIL were secreted from MSC. scFvCD20:sTRAIL after that HUMSCs were infected by pseudo viral particles. CCK8 assay was applied to detect the antigen-restricted cell death induced by scFvCD20:sTRAIL in CD20-positive BJAB and Raji cells as well as CD20-negtive Jurkat cells and human normal peripheral blood mononuclear cells (PBMCs). To evaluate the therapeutic effect of MSC. scFvCD20:sTRAIL in vivo,ge-netically modified HUMSCs were intravenously injected into tumor-bearing mice with BJAB cells. The volume of tumor was measured every three days, and the inhibition ratio of tumor was calculated according to tumor volume. Results: Lentivirus expression vectors pLenR. scFvCD20:sTRAIL, pLenR. ISZ:sTRAIL, pLenR. scFvCD20 and pLenR. CopGFP were successfully constructed and these constructs could be expressed stably in HUMSCs by lentivirus transduction. scFvCD20:sTRAIL fusion protein produced a potent inhibition of cell proliferation in CD20-positive BJAB cells,moderate inhibition of the growth of Raji cells,and weak inhibition in CD20-negtive Jurkat cells when compared with ISZ-sTRAIL treatment,and it had no effect on normal human peripheral blood mononuclear cells (PBMCs). The MSC. scFvCD20:sTRAIL treatment significantly inhibited the tumor growth when compared with those treated with MSC. ISZ-sTRAIL. Conclusion: A double-target therapeutic system is well established, in which HUMSCs migrated to tumor site, secreted a novel fusion protein scFvCD20:sTRAIL,and thus locally concentrated scFvCD20:sTRAIL extended antigen-restricted anti-tumor activity. The engineered HUMSCs secreting scFvCD20:sTRAIL showed potent effect on inhibiting tumor growth in BJAB lymphoma malignancy,which may play an essential role in the clinical research .

Aim To investigate the expression of AB-CB5 and MDR1 in the cell line KG1 a and samples from acute myeloid leukemia ( AML) and their effects on multidrug resistance. Methods The expression of ABCB5 and P-gp ( the expressed product of MDR1 ) in KG1 a cells were detected by flow cytometry as well as Western blot analysis; KG1 a cells were transfected with the specific siRNA of ABCB5 using lipo2000 to reduce the expression of ABCB5; intracellular rhoda-mine123 was measured by flow cytometry;cell viability was detected by MTT; the expressions of ABCB5 and MDR1 in samples from AML were detected by real time PCR. Results ABCB5 and P-gp were overexpressed in KG1 a;the specific siRNA of ABCB5 transiently in-hibited the expression of ABCB5 in KG1 a; the siAB-CB5-KG1 a cells increased the intracellular rhodamine 123 and have been more sensitive to adriamycin com-pared with the parent KG1a. ABCB5 gene expression in samples from AML was higher than healthy people. Further, the expression of ABCB5 in 38 relapse or re-fractory AML significantly exceeded the 33 drug sensi-tive. And we found a significant positive correlation between ABCB5 expression and MDR1 gene expression in the 38 patients with relapse or refractory AML. Conclusion ABCB5 , as well as P-gp contributes to mediate multidrug resistance of AML, which provides a novel target for the therapy of relapse or refractory AML.

Objective:To investigate the efficacy of stereotactic body radiation therapy with gamma-knife (γ-SBRT) combined with targeted drug sorafenib and hyperthermia for the treatment of recurrent and metastatic hepatocellular carcinoma. Methods:A total of 71 patients with recurrent and metastatic hepatocellular carcinoma were admitted from August 2007 to December 2009. Among these patients, 39 were treated with γ-SBRT and hyperthermia (group 1); 19 were treated with γ-SBRT combined with sorafenib and hyperthermia (group 2). Results: The total efficacy rate after a three-month treatment was 83.1% (59/71). In group 1, the following results were obtained:one-and three-year local control rates of 41.0%(16/39) and 18%(7/39), respectively;one-and three-year overall survival (OS) rates of 41.2% and 17.9%, respectively; and one- and three-year progression-free survival (PFS) rates of 38.4% and 15.4%, respectively. In group 2, the following results were obtained:one-and three-year local rates of 56.3%(18/32) and 28.1%(9/32), respectively;one-and three-year OS rates of 62.5%and 28.1%, respectively;and one-and three-year PFS rates of 59.4%and 25.0%, respectively. Significant differences in OS and PFS were observed between the two groups. Conclusion:The combination ofγ-SBRT with targeted drug sorafenib and hyperthermia can be used effectively to treat recurrent and metastatic hepatocellular carcinoma. Adverse reactions are mild, and patients can tolerate this treatment.

BACKGROUND:At present, the methods of treating unstable comminuted radial head fractures contain open reduction and internal fixation and metal prosthesis replacement. There were success cases treated by the two methods, but some shortcomings simultaneously existed.
OBJECTIVE:To compare the clinical therapeutic effects of replacement of the radial head with metal prosthesis with open reduction and internal fixation for the treatment of unstable comminuted radial head fractures.
METHODS:A prospective randomized control ed analysis was performed in 45 cases of unstable comminuted radial head fractures. These cases received open reduction and internal fixation and metal prosthesis replacement. This study compared the Broberg and Morrey elbow joint function score and the incidence of complications after fixation, and performed statistical analysis.
RESULTS AND CONCLUSION:The subjects were fol owed up for 1-5 years, averagely 2.8 years. According to Broberg and Morrey scores, the average score was 90.1 and the incidence of complications was 13.6%in the prosthesis replacement group. The average score was 76.8 and the incidence of complications was 47.9%in the open reduction. Significant differences were visible between the two groups (P<0.01). Compared with the open reduction group, prosthesis replacement for unstable comminuted radial head fractures obtained better joint function and lower incidence of complications.