Objective To study the relationship between serum homocysteine level and acute type 2 diabetes mellitus complicated with cerebral infarction.Methods Patients were divided into three groups:acute diabetic cerebral infarction group including 87 patients,diabetes mellitus including 72 patients and control group including 67 healthy persons.The HCY,folic acid,VitB12 and serum lipid were determined.The data was analyzed and the relationship was discussed.Results The level of HCY in diabetic cerebral infarction group[(15.7 ±9.7)nmol/L]was much higher than that in the other two groups[(11.9±7.2)nmol/L and(13.5±6.1)nmol/L].Conclusion HCY maybe participate in occurrence and development of diabetes and pathological changes of blood vessels.It was an independent risk factor of acute cerebral infarction.

Objective To compare the effect of percutaneous balloon compression (PBC) versus percutaneous radiofrequency thermocoagulation treatment (PRFT) on idiopathic trigeminal neuralgia in elderly patients. Methods The 87 patients with idiopathic trigeminal neuralgia were enrolled, 42 patients were treated by PBC (PBC group), and the other 45 patients were treated by PRFT (PRFT group). The effects of two therapies were evaluated after treatment. Results The early response rate (92.9% vs. 95.6%) and cure rate (88.1% vs. 88.9%) of PBC group versus PRFT group had no significant differences (both P＞0.05). The inhibitory response rate of trigeminal nerve was significantly greater in PBC group than in PRFT group after treatment (69.0% vs. 35.6%, P＜0.05), and 1 patient had cardiac arrest in PBC group. The two groups had different degrees of facial numbness and sensory dysfunction. The 39 patients treated by PBC had numbness in three divisions of trigeminal nerve, while 43 patients treated by PRFT had the high selection and showed the main numbness in the ill division of trigeminal nerve. The chewing gravis rate was higher in PBC group than in PRFT group (71.8% vs. 20.9%, P＜0.05). There was no neuralgia recurrence in both groups during 6 monthe′ follow-up. Conclusions The effect of treating the elderly patients with idiopathic trigeminal neuralgia is similar by PBC and PRFT. The PBC therapy under general anesthesia is more convenient for patients who can not cooperate.The PRFT has much higher selectivity in trigeminal nerve damage, lower inhibition rate of the trigeminal nerve, and less influence on the masticatory muscle function.

OBJECTIVE: To discuss the biosafety and biocompatibility of biomaterials. METHODS: A computer-based online search of CNKI, CBM and VIP as well as manual search were performed to collect articles about random cell control experiments and animal experiments of biological material biocompatibility published between 1990 and 2008. A total of 28 Chinese literatures were collected, and 7 were included mainly involving the cytotoxicity test methods and blood compatibility of the experimental medium, experimental grouping, experimental materials, methods of observation, experimental results, and experimental conclusion. In addition, biocompatibility of the biological material was analyzed to summarize the biocompatibility of the biological safety. RESULTS: Based on experiments of biosafety and biocompatibility of biomaterials, the cytotoxicity test and blood compatibility of various biomaterials, such as collagen, chitosan, magnetic nanoparticle, metal vascular stent, sulphurated siliastic medical grade silicon rubber, polyurethane, ceramic coatings by micro-arc oxidation, are essential for the biological safety. The experimental results have shown that the biomaterials have good biocompatibility. CONCLUSION: A variety of biological materials present good biocompatibility, including collagen, chitosan, magnetic nanoparticle, metal vascular stent, sulphurated siliastic medical grade silicon rubber, polyurethane, ceramic coatings by micro-arc oxidation, based on the evaluation criteria.

Objective To investigate the interaction of in vitro antibacterial activity between cefoperazone-sulbactam and imipenem against carbapenem-resistant Acinetobacterbaumannii.Methods The minimum inhibitory concentrations (MIC) of imipenem and cefoperazone-sulbactam against Acinetobacter baumannii were detected and the fractional inhibitory concentration (FIC) index of imipenem/cefoperazone-sulbactam combination was calculated by broth micro-dilution method.The interactions of imipenem and cefoperazone-sulbactam were assayed by K-B agar plate method.Results The MIC50 of cefoperazone-sulbactam and imipenem were both 16 mg/L,and MIC90 of the two drugs were both 64 mg/L.Among the 26 strains of Acinetobacter baumannii,16 strains had FIC indexes ≤0.5,and 10 had FIC indexes≥2.0.K-B agar plate assay showed that the cefoperazone-sulbactam/imipenem combination was synergistic for strains with FIC indexes≤0.5,and antagonistic for strains with FIC indexes ≥ 2.0.Conclusions Imipenem in combination with cefoperazone-sulbactam can be either antagonistic or synergistic against carbapenem-resistant Acinetobacter baumannii.The clinical use of cefoperazone-sulbactam/imipenem combination for the treatment of carbapenem resistance Acinetobacter baumannii infections should be cautious in case of antagonism.

Objective To detect the methylation status of CDH1 3 gene promoter in colon cancer by using methylation-specific polymerase chain reaction(MSP)technique.Method The tissue specimens from 32 cases of colon cancer(observation group),and 12 cases of normal colon tissues(control group)were examined,the methylation of CDH13 gene promoter was detected by MSP.Result The methylation of CDH13 gene promoter was detected in 19 cases(59.4％,19/32)in observation group,1 case(8.3 ％,1 / 12)in control group,there was statistical significance between two groups(P =0.002).Conclusion Frequency of the methylation of CDH13 gene promoter is apparently higher in colon cancer tissues than that in normal colon tissues,it reveals that CDH13 gene promoter may contribute significantly to the development of colon cancer.

Objective:To analyze the genetic sequence characteristics of amomum viosum and establish a rapid identification meth-od for amomum viosum by fluorescent quantitative PCR based on DNA analysis. Methods:Amomum viosum and the other samples be-longing to the same genera were collected and identified by experts in the domain. DNA was isolated using commercial kits. The prim-ers and probe were designed according to the conserved region of ITS in amomum viosum. The reaction conditions were optimized to es-tablish the fluorescent quantitative PCR method for the rapid detection of amomum viosum. Results:The fluorescent quantitative PCR method for the rapid detection of amomum viosum was set up. The method could identify amomum viosum successfully, while those samples in the same genera were without amplification curves. Conclusion: Amomum viosum can be identified rapidly by fluorescent quantitative PCR besides the traditional identification by experts.

Sixty diabetic patients and twenty normal controls were studied. The results showed that: 1) Counter-immuno-electrophoresis is a sensitive and simple test suitable for the detection and monitoring of diabetic microproteinuria; 2) The proteinuria in diabetic nephropathy is glomerular in origin which is supported by the finding of a marked increase in urinary albumin excretion and a normal level of urinary ?2-microglobulin; 3) The serum ?2-microglobulin appears to be a more sensitive index than serum creatinine and creatinine clearance rate for the detection of impairment of renal function in diabetic patients; 4) Diabetic nephropathy is related to glycemic control and duration of diabetes mellitus.

[Objective]To develop a method using HPLC for determination content of saikosaponin a and saikosaponin d of Radix Bupleuri from different areas.[Method]Column:YMC-Pack ODS-A C18(250?46 mm,5?m),mobile phase:acetonitrile-water(43∶57),detected wavelength:203nm.[Results]The regression eguations of saikosaponin a and saikosaponin d were Ya =1.223?106 X - 2.249 8?105(r = 0.999 9),Yd = 2.093?106 X - 4.786 2?105 (r = 0.999 8).The average recovery rates of saikosaponin a and saikosaponin d were 98.13 %,97.99 %.[Conclusion]The HPLC method is simply and suitable to control quantitative of radix bupleurum.

Genetic susceptibility of lung cancer plays an important role in genesis of lung cancer.Studies find that tumor necrosis factor α(TNF-α)is significantly up-regulated in lung cancer patients.It may be correlated with the TNF-α polymorphism in its promoter region which affects its transcription and expression.TNF-α polymorphisms may be an important genetic marker for susceptibility of lung cancer.

Objective:To discuss the regulation requirements of software based on the analysis of software-related recalls of medical devices. Methods:The data of software-related recalls of medical devices in America were collected and processed, and the type, situation, cause and trend of software-related recalls were analyzed, then the suggestions on the regulation requirements of software were proposed. Results:During the four periods from 1983 to 2011, the percentage of software-related recalls vs medical device recalls in America increased from 6%to 19%, and the year-on-year growth rate of software-related recalls rose by 47%to 164%, significantly higher than medical device recalls in the same period (from 13%to 54%). Especially, the problem of software-related recalls in radiology medical devices was the most serious. Conclusion: The regulatory situation of software is more complicated and severe, so the regulation requirements of software, including software validation, adverse event monitoring and usability design, need to be further strengthened according to the particularity of software.