Objective To evaluate the radiosensitization effect of low-temperature plasma on HepG2, A549, and HeLa cells.Methods Cells were divided into three groups, radiation group (R) , plasma treatment group(P), and plasma plus radiation group (P + R).After radiation, cell survival was detected by a cloning assay.Cell cycle distribution, apoptosis and ROS content were tested by flow cytometry.Western blot was used to measure the expressions of Caspase-3 and Bcl-2.Results Lowtemperature plasma showed radiosensitization effects on three different human malignant cell lines with a sensitivity enhancement ratio(SERD0) of 1.28,1.32 and 1.29.respectively.In these three different human malignant cell lines, compared with radiation alone group (R) , the G2/M arrest, apoptosis rate and ROS level in the group P + R were enhanced (the prolongation of G2/M arrest: t =9.52, 8.24, 9.53, P ＜ 0.05;the apoptosis rate: t =10.67, 38.56, 6.74, P ＜0.05;ROS content: t =9.41, 15.42, 13.53, P ＜0.05).In HepG2 cells and A549 cells, compared with group P, the prolongation of G2/M arrest, the apoptosis rate and ROS content of group P + R were enhanced (the prolongation of G2/M arrest: t =8.75, 20.37, P＜0.05;the apoptosis rate: t =8.43, 9.99, P ＜0.05;ROS content: t =4.82, 5.27, P ＜ 0.05).The expression level of Bcl-2 protein was downregulated in group P + R;by contrast, the expression level of Caspase-3 protein in group P + R was upregulated.Conclusions Low-temperature plasma can increase the radiosensitization of HepG2, A549 and HeLa cells with the enhancement of G2/M phase arrest, apoptosis induction and ROS generation.

Objective　Standard method of testing serum fluoride was tested and verified by certified reference material CRM of free fluo ride component in cattle serum (GBW 09143～09144).The method was suited for fluor ide research to assess its practical value.Methods　ISE-standard curve,linear relationship,linear range,sensitive and precision were disired result by CRM.400 serum of fluoride in rats were measured.Results　The linear ranges of the method were 0.02～5.0 mg/L,r=0.9999,b=57.8,and test lower limit was 0.013 mg/L.The test value was equal to standard value.Conclusions　The standard method is accurate,sensitive,convenient and small sample is used;and it is easy to spread.Thus,it has been of practical value.

BACKGROUND:With the development of surgical techniques and endovascular treatment techniques, the therapeutic efficacy on arteriosclerosis obliterans of the lower limbs has been improved greatly. As the long-term prognosis is stil not clear, how to treat arteriosclerosis obliterans of the lower limbs is stil a problem for vascular surgery. OBJECTIVE:To observe the long-term clinical efficacy of autologous bone marrow stem cel transplantation in the treatment of arteriosclerosis obliterans of the lower limbs. METHODS:Thirty-nine patients with arteriosclerosis obliterans who had undergone autologous bone marrow mesenchymal stem cels (totaly 56 times of cel transplantation) from September 2007 to July 2013 were enroled in this study. As of February 2015, the folow-up time was 7.5 years. After treatment, regular telephone folow-up about limb pain, cold sensation, intermittent claudication distance, resting ankle-brachial index and limb ulcer size and depth was done annualy; at 1 year after treatment, limb arteriography and venous blood gas analysis were reviewed. RESULTS AND CONCLUSION: Of the enroled 39 patients, 4 patients were subjected to amputation because of poor efficacy, 2 patients died of acute myocardial infarction, and 2 patients died of not timely amputation. There were 31 patients who had been folowed up for over 3 years. After treatment, the resting ankle-brachial index and limb ulcer size and depth limb pain were both improved significantly. There were significant differences in 1-year limb blood oxygen partial pressure and oxygen saturation before and after treatment, and the postoperative number of capilaries also increased significantly. These findings indicate that autologous bone marrow stem cel transplantation is a safe treatment for arteriosclerosis obliterans of the lower limbs with better and stable long-term curative effects. This method is a good choice for patients who have poor blood vessels and poor efficacy of traditional methods.

Aged ; China ; Drug Resistance, Bacterial ; Humans ; L Forms ; drug effects ; Middle Aged ; Mining ; Mutation ; Mycobacterium tuberculosis ; drug effects ; Silicotuberculosis ; microbiology

Objective To investigate the etiology and prognostic factors of acute kidney injury (AKI) in pediatric patients . Methods The clinical data of children patients with AKI in this hospital ,including the clinical features ,causes and outcomes ,were retrospectively analyzed .The relationship between the risk factors and prognosis was analyzed .Results Infants were dominated by the prerenal factors and the other age groups were dominated by the renal factors .The univariate analysis revealed that the AKI stage ,etiology ,mechanical ventilation ,sepsis/septic shock ,MODS ,acidosis ,creatinine initial value ,creatinine peak value and serum potassium were the factors affecting prognosis .The Logistic regression analysis showed that mechanical ventilation ,MODS and sep-sis/septic shock were the independent risk factors affecting prognosis .Conclusion The etiology of AKI in children is diverse and its distribution has the age characteristics .Mechanical ventilation ,MODS and sepsis/septic shock are the independent risk factors af-fecting prognosis .The early diagnosis and the active treatment conduces to improve prognosis .

Objective:To study the alteration of K-ras mutations in different stages of colorectal cancer(CRC) and its influence on the progression of CRC. Methods:The 20 paraffin-embedded tissues, including primary foci, metastatic lymph nodes, remoter metastatic foci, colorectal adenoma, and normal colorectal tissues, were collected from 20 patients with colorectal cancer. The sequence of PCR-amplified products were analyzed. Results:The wild K-ras gene was expressed in normal colorectal tissues. The mutation frequency of K-ras gene was 20.0% (4/20) in colorectal adenoma, 30.0% (6/20) in primary foci, 25.0% (5/20) in metastatic lymph nodes, and 30% (6/20) in remote metastatic lesions. In the samples with K-ras mutations, the consistency of the types of K-ras mutations between primary foci and colorectal carcinoma, lymph node metastatic lesions, remote metastatic lesions was 0.0%(0/4), 40.0%(2/5), and 50.0%(3/6), respectively.Conclusion:The colorectal adenoma, metastatic lymph nodes and remote metastatic lesions were not suited for K-ras analysis as routine samples in clinical practice. If the samples of primary lesions were not available, the detection results of metastatic lymph nodes and remote metastatic remote lesions will provide some reference values. K-ras gene had several different mutations in the progression of CRC.

A gas chromatography-triple quadrupole mass spectrometry coupled with solid phase microextraction method ( SPME-GC/QQQ) was developed for the determination of chlorinated anilines ( CAs) residues in soil. The multi-reaction monitoring ( MRM ) parameters were optimized. The SPME conditions such as amount of soil sample, volume of added water, extraction temperature and absorption time were investigated. Optimum SPME conditions including 8 g of soil sample, 4 mL of water, 80℃ of extraction temperature and 40 min of absorption time were employed in the experiment. Method detection limits were within the range of 1-10 pg/g, while linearities were within the range of 5-1000 pg/g. Under the optimized conditions, the soil samples spiked with 200 pg/g targets were determined with recoveries of 96. 8%-144. 2%and relative standard deviations of 13 . 4%-27 . 8% ( n=5 ) . The proposed method combines simplicity and rapidity of SPME and high selectivity of MRM. It is especially suitable for the quick screening and determination of trace amounts of chlorinated anilines residues in soil.

The concentrations of berberine (BBR) and 8-cetylberberine (8-BBR-C16) in rat plasma and tissue were determined by RP-HPLC. Both the plasma pharmacokinetics characteristic and tissue distribution differences of BBR and 8-BBR-C16 were compared to provide experimental data for the mechanism research and further drug development. After the oral administrations of BBR and 8-BBR-C16 at the dose of 80 mg x kg(-1) for rats, the pharmacokinetics result showed that compared with BBR, the C(max) and AUC(0-t), of 8-BBR-C16 increased by 2.8 times and 12.9 times respectively, t1/2 extended from 3.61 h to 11.90 h. The tissue distribution result showed that compared with BBR, the concentration of 8-BBR-C16 in various organizations increased and the retention time extended remarkably. The maximum concentration was achieved in lung and the highest concentration in it was 3 731.82 ng x g(-1). After being derived, the C(max) in plasma and bioavailability of 8-BBR-C16 increased remarkably and the circulation time in vivo extended. The drug concentration in tissue increased remarkably, and the distribution ratio changed too, with strong targeting selection in lung.

Objective To understand how about the female consumers know the skin conditions of themselves and which they concern by a comprehensive questionnaire. Methods Three hundred and twenty-eight healthy volunteers in Shanghai were involved in this study. They were divided into 5 age groups equally. The questionnaire included the skin conditions, i.e. skin moisture, sebum, whiteness, redness, xanthochromia, homogeneity, spots, fine line, wrinkle, elasticity, angiotelectasis,pore, sagging, smoothness, gloss, roughness, scales and sensitivity. Each condition was divided into 10 grades to assess the skin conditions of the face (exposed site), upper arm (non-exposed site) and the perfect skin status. SPSS11.5 software was used to analyze the correlations of the skin conditions with ages. Results The skin concerns were difference in the 5 groups. Skin aging of sagging, wrinkle, spots and fine line became prominent from group C (35 to 40 years old). The correlations between the skin concerns of facial moisture, sebum, whiteness, homogeneity, spots, wrinkle, fine line, elasticity, sagging, sensitivity, upper arm sebum, spots, elasticity, angiotelectasis, sagging and roughness with ages were very significant (P＜0.01). Conclusion The changes of the volunteers'concerns about sebum, pore, sagging, elasticity, fine line and wrinkle with age in different age group are consistent with the quantitative measurement results from the oversea studies.

nts were tend to suffer from AKI, with the most common cause of pre-renal injury and drugs such as antibiotics and contrast medium used in X-ray imaging. Outcomes of the patients with AKI depends on severity of their kidney injury.