[Objective] To investigate the effect of Suiqing Pill (SP), a Chinese prescription with the actions of activating blood and removing blood-stasis, on growth and metastasis of tumor. [Methods] Sixty C57BL/6 mice were randomized to three groups: group A (model control), group B (low-dose SP) and group C (high-dose SP). H22 hepatocarcinomatous metastasis models were established by subcutaneous injection of H22 hepatocarcinoma cells into the right lower limb. The inhibitory rate of tumor weight, incidence of metastatic carcinoma of lung, metastasis of lymph node, survival time and life-span prolongation rate were observed. [Results] The weight of tumor was reduced and the inhibitory rate of tumor weight was 36.83% in group B (P

Objective To explore the value of uric acid (UA) combined with lipoprotein a [Lp(a)] in prediction of atherosclerotic renal artery stenosis (ARAS) in high risk population with atherosclerosis. Methods A total of 190 patients who were highly suspected for ARAS and received renal artery angiography in Peking Union Medical College Hospital from October 2008 to April 2011 were enrolled in the study.Among these patients,120 were diagnosed as coronary arterial disease (CAD) by coronary artery angiography and 89 were diagnosed as ARAS.The control group included 180 people undergoing routine healthy examination in our hospital.The basic information and lab results such as UA,Lp (a),total cholesterol (TC),triacylglycerol (TG),HDL,LDL,Scr and C-reactive protein (CRP) were collected.Logistic regression analysis was used to identify possible risk factors of ARAS and to establish a new tool to predict ARAS in the high risk population. Results The levels of Scr,UA,Lp (a) and CRP in ARAS cases were significantly elevated compared to control people.For high risk population,there were no significant differences in Scr,lipids,UA and CRP between ARAS cases and non-ARAS cases.Logistic regression analysis showed that UA level＞344 μmol/L was correlated to ARAS independently.Using UA level＞344 μmol/L and Lp (a) level＞242 mg/L as a predicting marker for ARAS in high risk population,the specificity was 96.0％,the positive likelihood ratio was 5.45 (P=0.001),and the odds ratio was 6.78,95％CI (1.90～24.2) (P=0.001). Conclusions In high risk population,the UA may be an independent correlating factor of ARAS.Combining UA with Lp(a) can predict the ARAS.

Objective To observe the effect of low arsenic sub-chronic exposure on blood routine test index in rabbits to pave a way for screening early injury of the low arsenic exposure. Methods Twelve healthy male rabbits were randomly divided into four groups. They were administrated with As at the concentration of 0(control), 10, 50 and 250 μg/L in the drinking water. Blood samples were collected from the vein of the ear edge in 8 weeks, and blood test routine including leukocyte (WBC), lymphocyte (LYM), lymphocyte percentage (LYM%), neutrophil (GRA), neutrophil percentage (GRA%), monocyte (MON), monocyte percentage (MON%), red blood cell (RBC), hemoglobin (HGB), hematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular hemoglobin content (MCH), mean corpuscular hemoglobin concentration(MCHC), RDW, platelets(PLT), mean platelet volume(MPV), platelet hematocrit(PCT) and platelet distribution width (PDW), were detected by the ABX-60 hemocyte analyzer. Results Compared with the control group, the WBC, GRA and GRA% increased in 0, 50 and 250 μg/L groups, but there was no significance(P > 0.05). PLT and MPV had a statistical significance in 4 groups(F = 4.07,4.20, all P < 0.05). Compared with the control group[(292.00±16.97)×109/L, (7.10±0.99)fL], PLT decreased in the 250 μg/L group [(221.33±22.50)×109/L] and MPV decreased in the 50μg/L group [(5.57±0.46)fL] significantly (P < 0.05). The other index didn't change obviously. Conclusions Sub-chronic low level arsenic exposure may lead to the change in the blood system. The blood routine test may be considered for early injury of the arsenic poisoning.

Objective Establish an overall performance evaluation index system for innovative medical devices transforming project,a major science and technology project in Zhejiang province.Methods The weight of indexes was calculated using Delphi method,analytic hierarchy process and weight of percentile method.Results A three-level performance evaluation index system was established.First level included 3 indexes,as condition index,process index and result index,with weight of 0.3401、0.4042 and 0.2557 respectively.Meanwhile,second level and third level included 13 and 38 indexes.Conclusions The index system provide a performance evaluation tool for the innovative medical devices transforming project.

Objective　To study the significance of alteration of concentration of endothelins(ET) and calcitonin gene related protein(CGRP) in bile in patients with acute choiangitis of severe type(ACST). Methods　The concentration of ET and CGRP were detected by radioimmunoassay in 55 cases of ACST at openation time, and 7th, 14th day after operation. Results　Compared with the control group, the concentration of ET in bile in patients with ACST was significantly higher at operation time(P<0.01～0.001). The concentration of ET in bile also showed significant difference at operation time between the 2 groups with different ACST severity(P<0.05). The concentration of ET in bile gradually reduced after operations. Compared with the control group, the concentration of CGRP in bile was signficantly lower at operation time(P<0.01). CGRP in bile gradually rose after operation. Conclusions　The ET in bile has some effect on the ACST pathologic alterations. The content of ET in bile is related to the severity of ACST. The disturbance of the balance between bile ET and CGRP may contribute to the pathologic process of liver and bile duct injury in ACST.

ObjectiveTo study the effect of 8 Hz infrasound on the expression of 5-hydroxytryptamine (5-HT) in rats' hippocampus and temporal cortex.Methods140 male SD rats were randomly divided into the control group, and experimental groups that exposed to infrasound of 8Hz,90dB,100dB and 130dB for 1,7,14,21,28,35,42 days. Experimental groups were exposed to infrasound for 2 hours each day. The control group was only placed in the infrasonic storehouse but without infrasound. Rats' brains were taken as soon as the exposure finished and strained by immunohistochemistry. The content of 5-HT in hippocampus and temporal cortex was detected under an optical microscope.ResultsInfrasound groups had less expression of 5-HT in hippocampus and temporal cortex than the control group (P<0.01), and the least were at the 28th day for 90 dB and 100 dB groups and the 21st day for 130 dB group. Then the expression of 5-HT had an increase in each group.ConclusionThe deceased expression of 5-HT in rats' hippocampus and temporal cortex could result from infrasound of 8 Hz. Rules of change are related to the parameter of infrasound and the 130 dB 8 Hz infrasound can induce greater changes compared with that of 100 dB and 90 dB.

Objective: To study the recombinant epitope antigens of hepatitis C virus (HCV), in order to fulfil the requirements of recombinant immunoblot assay kit. Methods: An expressing vector pBVIL1 for expression of recombinant antigens in a fusion manner with IL-1β was constructed. A series of selected genes from the HCV antigens including the C, NS3, NS4 and NS5 were amplified from HCV gene-containing plasmids using PCR and the expression plasmids for these genes were constructed in pBVIL1, respectively. The activity of the purified recombinant antigens were tested against an identified HCV antibody positive and negative panel with ELISA. Results and Conclusions: All the cloned genes of chosen antigen epitopes were highly expressed in pBVIL1 in E.coli. The activity of the C and NS4 antigens were slightly higher than the RIBA3.0 antigens, while the activity of NS3 was slightly lower than the RIBA3.0 antigen. But the total evaluation for the panel was same as RIBA3.0. That means the cloned antigens were suitable for the use in RIBA test kit.

Objective To detect the argyrophilic proteins in nucleolar organizer regions(Ag-NORs) that express rDNA and rRNA proliferation of T lymphocytes before chemotherapy and after complete remission(CR) in children with primary acute leukemia(AL).Methods The argyrophilic granules area of NOR/nuclear area(I.S%) of T lymphocytes was detected by image analysis system in peripheral blood of 42 patients before chemotherapy and after CR and 30 normal children.Results I.S% in the patients before chemotherapy(5.06%?1.36%) were significantly lower than those in the healthy donors(7.51%?1.06%)(t=8.238 P0.05).Conclusion These results suggest that decrease of Ag-NORs expresses the evidence for tumour induced suppression of immune function of T cells in children with AL prior to treatment.

AIM: To investigate the differences in the distribution of SRY-related HMG box 5 (SOX5) gene single nucleotide polymorphisms (SNPs) among stable chronic obstructive pulmonary disease (COPD) patients, COPD with pulmonary hypertension (PH) patients and healthy controls, and to explore the association of the SOX5 SNPs in COPD-related PH.METHODS: From April 2013 to April 2015, 250 patients with stable COPD were enrolled continuous-ly in Ningxia People’s Hospital according to COPD treatment guidelines (2013 edition).All the patients received echocar-diography, and were divided into COPD with PH group [pulmonary artery systolic pressure (PASP)≥50 mmHg, n =103] and COPD without PH group (PASP <50 mmHg, n =147).The healthy persons (matched for age, sex, race and smoking index, n =127) were selected as control group at the same period.Genotyping of SOX5 gene rs10842262 and rs11046966
loci was performed using MassARRAY genotyping system ( Sequenom).Genotype frequencies were calculated.RE-SULTS: Age, sex and smoking index showed no significantly difference between control group and COPD group, neither between COPD with PH group and COPD without PH group.Genotype frequencies of SOX5 gene rs10842262 and rs11046966 loci between control group and COPD group was of significant difference (P<0.05).Genotype frequencies of SOX5 gene rs10842262 and rs11046966 loci showed no significant difference between COPD with PH group and COPD without PH group.CONCLUSION: SOX5 gene rs10842262 and rs11046966 loci may play an important role in COPD, but not in COPD-related PH.

Objective To compare the concordance of five automated 25OHD immunoassays with liquid chromatography tandem mass spectrometry method ( LC-MS/MS) .Methods During May to July in 2014, 245 clinical serum samples that requested 25OHD tests were selected, with a total 25OHD range of 2.8 ng/ml-64.0 ng/ml, in which 154 samples did not contain 25OHD2 and 91 samples contains both 25OHD2 and 25OHD3 .To used a LC-MS/MS method that built in our laboratory to measure 25OHD, five commercial automated chemiluminescent immunoassays from Abbott Diagnostics ( A ) , DiaSorin LIASON (B), IDS-iSYS(C), Roche Diagnostics(D), and Siemens ADVIA Centaur(E).Taking the reference method LC-MS/MS as a standard , to compared the concordance and performance of the five automated 25OHD immunoassays.And used the commonly accepted cutoffs for 25OHDdeficiency (<20 ng/ml), and insufficiency ( 20 -30 ng/ml ) , and sufficiency (≥30 ng/ml ) to compare the uniformity of different methods .Statistical analysiswere performed by MedCalc software , Passing & Bablok regression , Bland &Altaman plots and Box and whisker plots were performed to compare the differences of the methods .Results The medium ( range:2.5% -97.5%) 25OHD of the 245 serum samples of the six methods was 23.5 (5.8-44.2) ng/ml(LC-MS/MS),20.6 (7.1-43.5)ng/ml(A),19.0 (5.4-38.0) ng/mL (B),23.0 (10.0-38.1) ng/ml(C),20.1 (5.1 -46.0) ng/ml (D),31.3 (12.3 -71.1) ng/ml (E), respectively .Passing and Bablok regression showed that method B had the best correlation coefficient with LC-MS/MS (r=0.894), while methods A, C and D had relatively small bias compared withLC-MS/MS and method E had the large bias .If the serum samples did not contain 25OHD2 , all the five automated immunoassays correlated well with LC-MS/MS with a correlation coefficient higher than 0.84, and B has the best correlation with LC-MS/MS ( r=0.930 ) .While all the correlation coefficient between immunoassays and LC-MS/MS decreasedwhen analyzing the samplescontaining 25OHD2.Using the clinical cutoffs, A, B, C, D and E had a concordance of 68.6%, 64.9%, 67.8%, 70.6% and 51.8% compared with LC-MS/MS, respectively .Conclusions There are significant differences between different detection systems of 25OHD.All the immunoassays results were affected by the existence of 25OHD2 .The concordance of serum 25OHD resultswas poor between different methods , and it may be necessary to built exclusive cutoffs for different methods.