SD rats aged 4 weeks were fed the diets containing high level of selenium(5.68 mg/kg),rich level of selenium(0.73mg/ kg)and(or)high level of Cadmium(33.3 mg/kg).The rats were sacrified at the end of 3,6,9 or 12 weeks after exposure to study the effects of high levels of selenium and cadmium fed to rats on contents of selenium in blood,heart,liver,kidneys,lung,brain and spleen.The results showed that the Contents of selenium in blood and tissues,especially in liver and kidney,were decreased significantly in the rats fed high levels of selenium and cadmium simultaneously in compared with those fed high level of selenium alone.This indicated that the development of endemic selenosis might be affected by cadmium in the area rich in high levels of selenium and cadmium.

Objective To investigate the qualitative diagnostic value of MRCP in patients with benign obstructive jaundice.Methods MRCP and conventional MR images were performed in 128 patients with benign obstructive jaundice on a superconductive MR scanner (Plilips medical systems Inc. Eclipse. 1.5T) . Final diagnosis was confirmed by surgical and histopathological findings in 123 patients and other 5 patients by follow-up.Results The accuracy of location diagnosis of MRCP was 100%; the qualitative diagnosis was 95.3%. The specificity, accuracy, sensitivity of the deadwood-sign for diagnosis of benign obstructive jaundice were 100%, 95.3%, 85.7% respectively. Conclusion The deadwood-sign was a specific indicator in MRCP of benign obstructive jaundice.

Objective To investigate the changes of Lp(a) in serum with three methods.Methods Using three regents to analyze 30 cases Lp(a) in serum.Results The level of 30 cases Lp(a) in serum is different with three methods,P 0.95 and P

The current situation of large-scale medical imaging equipment in Zhenjiang region is briefly summarized.Investigation and study are made on DSA,CT and MR of 19 hospitals in Zhenjiang.Data are treated statistically.Suggestions on management and disposition of large scale medical imaging equipment are put forward at last.

Matrine is a traditional Chinese medicine extraction which can inhibit the proliferation, migration and apoptosis of tumor cells. Cell signal transduction affects the tumor biological behavior and growth condition. Except for the widely research of MAPK, JAK-STAT, NF-κB signal transduction pathways, the latest signaling pathways about matrine are Wnt/β-catenin signaling pathway and mTOR signaling pathway. These pathways are mainly activated by the phosphorylated key proteins to alleviate inflammatory reaction and inhibit the growth of tumor cells and tumor biological behaviors. The research of matrine by cell signaling pathways can provide molecular targeted therapy with theoretical basis. The relationship among different signaling pathways related to the anti-tumor effect of matrine is worth studying deeply in the future.

ObjectiveTo explore the relationship of marriage quality with individual characteristics and copy style among the epilepsy patients.MethodsThe Chinese Marriage Quality Questionnaire,and Eysenck Personality Questionnaire Short Form Scale-Chinese edition (EPQ-RSC),and the Questionnaire of Simple Way to Coping were assessed used to assess 97 cases of the aduh married epilepsy patients and 93 cases of the control group 1 (epilepsy patients spouses) and 91 cases of the control group 2 (healthy crowds ).ResultsThe total scores of the marriage quality of epilepsy patients ( 295.78 ± 40.37 ) was lower than ones in the control group 2 ( ( 354.85 ± 28.11 ),P =0.000) and higher than that of the control group 1 ( (278.55 ± 42.23 ),P =0.014),the difference was all statistically significant(P＜ 0.05).The total scores of marriage quality of the epilepsy patients was negative correlated with the sex,and the age,and the marriage age and the severity,and the duration,and psychoticism( the Pearson correlation was respectively:-0.204,-0.436,-0.243,-0.691,-0.568,-0.635 ),and was positive correlated with which the formal schooling,and the attack types (symptoms epilepsy),and the introversion or extroversion,and the hidness,and the positive( the Pearson correlation was respectively 0.317,0.750,0.267,0.386,0.188) the difference was all statistically significant (P ＜ 0.05).Those seven variables that the attack type,and the hidness,and the severity,and the sex,and the education,and the psychoticism,and the positive could be predict to marriage quality of epilepsy patients,Adjusted R square was 0.903,After adjustment was 0.021 (P ＜ 0.05 ).ConclusionThe lever of marriage quality of the epilepsy patients is lower,and correlate with severity of epilepsy disease,and personality,copy style,and can be do comprehensive intervention from those.

Objective To explore the internal jugular vein liver inside door body bypass surgery (Transjugularintrahepatie portosystemic shunt,TIPS) and part of the spleen embolization (PaniM splenicembolization,PSE) after laparoscopic resection combined with spleen schistosomiasis compounds with cirrhosis of the liver function of spleen hyperthyroidism curative effect.Methods Fifty-two cases had schistosomiasis hepatocirrhosis with spleen function in patients with hyperthyroidism,doing any operation after a week PSE TIPS.Postoperative liver function and adopted to monitor changes,two weeks left hand done help type laparoscopic splenectomy.Results Fifty-two patients underwent TIPS and PSE after surgical treatment,blood picture and liver function back to normal,in two weeks or so do help laparoscopic resection of the hand of the spleen,five cases were transfered to open surgery,patients were cured and discharged.And the previous similar average hospitalization days compared with patients who shorten,average hospital expenses dropped,and less complications,little pain.Conclusion TIPS and PSE joint laparoscopic splenectomy are schistosomiasis compounds with cirrhosis of the liver function of spleen hyperthyroidism,definite effect not only,and safety,minimally invasive,has a good value of clinical application.

Objective To prepare quality control samples for St.Louis encephalitis virus(SLEV)molecular detection by constructing pseudovirus containing target sequences of SLEV.Methods According to the principles of armored RNA technique, the prM gene sequence of SLEV was cloned into the prokaryotic expression vector to generate recombinant plasmid pSE380-MS2-SLEV.Then, recombinant E.coli transformed with the corresponding plasmid was induced with IPTG to produce recombinant pseudovirus particles.The particles were purified by chloroform and further characterized by double enzyme digestion and transmission electron microscopy.The temperature sensitivity experiments and quantitative RT-PCR were performed to validate the potential of these pseudovirus particles as quality control samples.Results PCR amplification and sequencing analysis confirmed that the prM gene sequence of SLEV was cloned into vector pSE380-MS2.Transmission electron microscopy showed that homogenous spherical particles with a diameter of about 25 nm were produced upon IPTG induction.The SLEV genomic RNA within the pseudovirus particles was resistant to DNaseⅠand RNase A digestion, and remained stable for 20 days at 37℃.These samples were validated with quantitative RT-PCR for SLEV.Conclusion The RNase-resistant and stable pseudovirus particles containing prM fragment of SLEV are constructed successfully, which can be used as positive quality control samples for RNA extraction and molecular detection.

BACKGROUND:Breast cancer stem cells not only lead to theoccurrence of breast cancer, but also may cause breast cancer metastasis and recurrence. The relationship between stem cells and cell resistance is also gaining increasing attentions, and the focus on the stem cell treatment may result in unexpected results.OBJECTIVE:To explore the reversal effect of psoralen on glutathione-S-transferase π (GST-π) in human breast cancer MCF-7/ADR cells and its mechanism.METHODS:MCF-7/ADR cells were cultured and enriched in serum-free medium to obtain breast cancer stem cells.RT-PCR and western blot were used to detect the expression of GST-π at the levels of gene and protein in the MCF-7/ADR cells after treatment with 0, 4, 8, 12, 16 mg/L psoralen. To observe the activation of nuclear factor-κB,western blot was used. The expression of GST-π was detected by RT-PCR in 18 μmol/L SN50 group and 8 mg/L psoralen group. Cell counting kit-8 assay was used to detect the effect of doxorubicin on cell proliferation.RESULTS AND CONCLUSION:Compared with the control group, psoralen reduced the expression of GST-π at the mRNA and protein levels, and significantly inhibited the activation of nuclear factor-κB. It was suggested that psoralen could reverse the multidrug resistance of human breast cancer MCF-7/ADR stem cells by decreasing the expression level of GST-π. The mechanism may be achieved by inhibiting the nuclear factor-κB signal pathway.

Objective To explore the effect of psoralen on topoisomerase IIα(TopoIIα) expression of breast cancer stem cells.Methods CD44+CD24-/low breast cancer stem cells were sorted from MCF-7/ADR by magnetic-activated cell sorting(MACS).We observed the growth characteristics of these stem cells through optical microscope and detected the growth-inhibitory effects of psoralen on breast cancer stem cells by CCK-8 assay and IC50 of adriamycin and adriamycin combined with psoralen to calculate the reversal index.The mRNA and protein expressions of Topo IIα were detected using RT-PCR and Western blot, respectively.Results Under the optical microscope, breast cancer stem cells presented spheres.IC10 and IC20 of psoralen on breast cancer stem cells were (6.77±0.23)μg/mL and (10.36±0.21)μg/mL.IC50 of adriamycin and adriamycin combined with psoralen on breast cancer stem cells was (90.03±3.56)μg/mL and (21.47±0.82)μg/mL, the reversal index was 4.19.Psoralen significantly raised the expressions of Topo Ⅱα at mRNA and protein levels.Conclusion Psoralen reversed the resistance of adriamycin by increasing the gene and protein expressions of breast cancer stem cells Topo Ⅱα and the drug targets.