In many medical instrumentation systems, there exists a long distance between manipulation platform and host unit. Wireless data transferring between the platform and the host could be a feasible way to set parameters. This paper introduces wireless transmitter and receiver circuit based on encoder chip PT2262 and decoder chip PT22720, and presents some typical applications in medical instrument development.

Objective To evaluate the diagnostic accuracy of GenoType? M TBDRsl for the resistance to fluoroquinolones anti‐tuberculosis drugs .Methods Systematic and comprehensive literature was searched in PubMed ,Embase ,Web of Science ,CBM , CNKI ,VIP and Wanfang database .The relative studies of GenoType? MTBDRsl to fluoroquinolones anti‐tuberculosis drugs were included .After quality assessment ,Meta‐Disc1 .4 software was used to analyze the data .Results A total of 16 trials ,involving 1 766 participants ,were included .The results of Meta‐analysis showed that the weighted sensitivity ,specificity ,positive likelihood ra‐tio ,negative likelihood ratio ,diagnostic odds ratio ,and the area under summary receiver operation curve were 0 .83 ,0 .96 ,17 .50 , 0 .20 ,108 .46 and 0 .934 9 ,respectively .Conclusion GenoType? M TBDRsl assay for the resistance to fluoroquinolones anti‐tuber‐culosis drugs might be with high sensitivity and specificity ,which could be recommended as efficacy diagnostic tool .

Objective To compare the clinical utility of alpha-fetoprotein (AFP) and des-gammacarboxyprothrombin (DCP) in diagnosing hepatocellular carcinoma (HCC) in patients with a hepatic mass.Methods From January 2015 to May 2015,141 patients were diagnosed to have a liver tumor after imaging examinations in the Hepatobiliary Surgical General Hospital of PLA,Beijing,China.Preoperative AFP and DCP were measured using commercial assay kits.The reference standard was either pathologic or clinical diagnosis of HCC.The performance of AFP and DCP in diagnosing HCC was determined using receiver operating characteristic curve analysis.Results Of 141 patients,98 were diagnosed to have HCC and 43 without.The levels of AFP were significantly higher in patients with HCC than those without [80.0(3.9-1 375.0) μg/L vs.2.1 (1.6-3.2) μg/L,Z =6.98,P ＜ 0.01].Similar results were observed in the levels of DCP [141.5 (24.0-978.0) AU/L vs.19.0 (14.0-25.5) AU/L,Z =5.18,P ＜ 0.01].Receiver operating curves (ROC) indicated the cut-off value with the best sensitivity and specificity was 3.6 μg/L for AFP and 35 AU/L for DCP.The difference in the area under ROC between AFP and DCP was not statistically significant (0.87 vs.0.78,Z =1.72,P =0.085).The sensitivity and specificity for detection of HCC in patients with a hepatic mass were 56.1％ and 95.4％ for AFP ＞ or =20 μg/L,69.4％ and 83.7％ for DCP ＞ or =40 AU/L,respectively.The level of AFP was associated with DCP in patients with HCC (x2 =9.12,P ＜ 0.01,r =0.292) and parallel testing of AFP and DCP gave an optimal sensitivity of 79.6％ with a specificity of 81.4％ in diagnosing HCC.Conclusions DCP is a useful biomarker and it gave an equal performance as AFP in diagnosing HCC in patients with a liver mass in this study.Parallel testing of AFP and DCP effectively increased the diagnostic sensitivity.Although the biomarkers only marginally improved the diagnostic results,it could be useful in diagnosing HCC in individuals who had atypical imaging results.

China ; Congresses as Topic ; Humans ; Integrative Medicine ; Medicine, Chinese Traditional

Beta-Elemene is an antitumor drug which is isolated from the traditional Chinese medicinal herb Curcumae Phaeocaulis Rhizoma, it is the main component of elemene which is extracted from the plant and delivered via blood circulation after intravenous injection. The antitumor effect of beta-elemene in vitro and in vivo was definite, and beta-elemene could improve the patient immunity and no sever side effect, drug resistance or bone marrow suppression were found during the clinical studies. And human serum albumin (HSA) is a primary extracellular protein which has a high concentration distribution in blood plasma and has many characteristic physiological functions. Therefore, the binding of beta-elemene to protein may be very important for absorption, distribution, metabolism and elimination. Therefore, the study on the interaction of beta-elemene with drug-carrying protein is very important. In this work, molecular binding of beta-elemene to human serum albumin (HSA) was investigated by using spectrofluorometer. the binding constants suggested that a strong interaction and the formation of a complex between beta-elemene and HSA. This clearly implies that beta-elemene can be stored and removed by the proteins in the body. Furthermore, the fluorescence quenching results showed that the HSA fluorescence was quenched by beta-elemene through static quenching mechanism. Thermodynamic parameters showed that hydrophobic interactions play a role in the binding of beta-elemene to HSA. The negative deltaH(0) and positive deltaS(0) in case of beta-elemene therefore showed that electrostatic attraction play a role in the binding of beta-elemene to HSA.
Drugs, Chinese Herbal ; chemistry ; Humans ; Kinetics ; Protein Binding ; Serum Albumin ; chemistry ; Sesquiterpenes ; chemistry ; Spectrometry, Fluorescence ; Thermodynamics

Suturing is the key to the success of corneal transplant surgery.By analyzing the suturing-process of corneal,a model for suturing was established.A suturing theorietical trajectery was proposed without considering the viso-elasticity of comeal.Then,a suturing simulation was done with the ANSYS software,the manipulating trajectory was planned for corneal soft-tissue with viso-elasticity,correspondingly,and the position and posture of needle in suturing were obtained.The study can be used for suturing manipulation in cornea suture surgical.

Glioma is the most common intracranial malignant tumor,with high incidence and recurrence rate,high fatality rate and the characteristics of low cure rate.Current treatment is given priority to with surgical treatment,auxiliary comprehensive therapy such as radiotherapy and chemotherapy.Hydrogen peroxide (H2O2) is a intermediate product of the cell oxygen metabolism which is a universal phenomenon in aerobic organisms.H2O2 is indispensable at various stages of tumor cell proliferation,infiltration and metastasis.Studies of the production of H2O2 and its function,the mechanism of apoptosis and the relationship between H2O2 and glioma cells can provide corresponding guidances for looking for a target gene for the treatment of gliomas.

This paper introduces a programming cardiac trigger apparatus used for the study of quantitative measurement of myocardial blood flow with myocardial contrast echocardiography.The design of hardware circuit based on MCU and the scheme of software based on Keil C51 are mainly discussed.With stable and reliable working,this apparatus provides a kind of technical support for the study of quantitative measurement of myocardial blood flow with continuous intravenous injection of sonicated microbubbles.

Objective To investigate the effect of Zidan decoction containing serum on endometrial receptivity in uterine immunity environment,and then to discuss if it's effect on endometrial receptivity through its controlling the expression of cell factors which related to endometrial receptivity.Methods Mice's endometrium tissue samples and uterine Natural Killer (UNK) cells were obtained from pregnant mice on gd 4.5 days and gd 12.5 days.After endometrial glandular epithelial cells,endometrial stromal cells and UNK cells were separated through primary culture,epithelial cells and endometrial stromal cells at rate of 1 ∶ 1 a certain concentration UNK were mixed together and highly purified-cultured.Different concentrations of Zidan decoction was acted on the culture solution.FBS,black and aspirin control group were setup for contrast.The expression of LIF and VEGF which influenced by Zidan decoction in the immunity environment was assayed by Realtime-PCR.Results The expression of LIF and VEGF was significantly increased in the immunity environment of uterine (in 10％ Zidan decoction group,10％ aspirin group and 10％ blank control group:LIF was 2.10±0.20,1.98±0.14,0.90±0.05 separately,and VEGF was 3.17±0.31,2.52±0.09,0.92±0.06respectively,P＜0.05).Conclusion Zidan decoction could improve endometrial receptivity by increasing the expression of cell factor which related to endometrial receptivity with the help ofUNK paracrine.

Objective To study dectin-1 mRNA expression in lung of different immune status mice infected with Aspergillusfumigatus, and to explore the influence of immunosuppressive agent on the expression of dectin-1 and its relationship with the progression of disease. Methods Mice were divided into four groups which were normal control, immuncompromised, immuncompromised with A.fumigatus inoculation and immuncompetent with A.fumigatus inoculation groups. We explored the kinetic mRNA expression of dectin-1 in lung of different groups by real-time quantitative PCR. Pulmonary fungal burden assessment was performed to reflect the progressing of disease during the experimental time course. Results On day 3 after inoculation, pulmonary fungal burden of the immuncompromised mice was higher than that of the immuncompetent group. On day 1 and 3, dectin-I mRNA expression in lung of the immuncompromised group was much lower than that of the normal control. On day 3, dectin-1 mRNA expression in lung of the immuncompetent mice infected with A.fumigatus was much higher than that of the immuncompromised with A.fumigatus inoculation and the normal control groups ( P < 0.05 ). Conclusion During the infection, expression of dectin-1 in lung of the immuncompetent group was strikingly increased, which may play an important role on the defence to A.fumigatus invasion. Cyclophosphamide inhibited the expression of dectin-1 in lung of mice which may be one of the mechanisms of the invasive pulmonary aspergillosis development induced by eyclophosphamide.