In order to investigate the affinity of aptamers to Bacillus anthracis spore, a custom synthesized 78 mer random DNA library was subjected to 15 rounds of selection against spores of vaccine strain A.16R by using SELEX method. The selected aptamers were cloned and sequenced. Macaw 2.05 and DNAsis 2.5 package were employed to analyze the conserved sequences and second structure of the aptamers, respectively. Affinities of aptamers to the spores were visualized by biotin streptavidin horseradish peroxidase system. The results showed that affinities of the aptamers were different. The highest OD at 450nm was 1.2, and the lowest was 0.25. The second structure analysis revealed possible stem loops for binding to the spores. The conserved sequences, AGGGG, CCCCG, GGGTT and ACACT, were found and the aptamers having same conserved sequence demonstrated similar affinity to the spores.

Objective To explore the effect of participatory humanistic nursing on the quality of life and psychology of patients with gastric cancer. Methods From May 2015 to May 2016, 68 patients with gastric cancer were enrolled in the study. All patients were divided into the experimental group and the control group with 34 patients in each group according to the principle of double-blind randomization. Patients in the control group were given routine clinical nursing, and patients in the experimental group were given the participatory humanistic nursing care. The quality of life and psychological state were evaluated by European Organization for Research and Treatment of Cancer Quality of Life Questionnaire and Symptom Checklist 90 edited by Derogatis and compared before nursing and after 6 months of nursing. Results There was no significant difference in the quality of life before nursing between two groups (P >0.05). After nursing, the scores of physical function, role function, emotional function, cognitive function, social function of the quality of life were 57.85±4.64, 68.43±5.23, 61.43±4.97, 58.47± 6.12, 53.57±5.54 in the experimental group and 43.56±4.56, 54.67±4.67, 56.34±4.74, 51.34±4.13, 50.46± 4.27 in the control group,and there were significant differences (t=2.593-12.808,P<0.01 or 0.05). There was no significant difference in the psychological state before nursing between two groups (P>0.05). After nursing, the scores of interpersonal sensitivity, depression, anxiety, hostility, terror, paranoia, psychosis of the psychological state were 1.65 ± 0.17, 1.40 ± 0.15, 1.45 ± 0.14, 1.46 ± 0.12, 1.52 ± 0.16, 1.54 ± 0.10, 1.43 ± 0.11 in the experimental group and 1.75±0.21, 1.72±0.24, 1.63±0.21, 1.75±0.23, 1.71±0.24, 1.65±0.10, 1.56 ± 0.12 in the control group, and there were significant differences (t=2.158-6.593, P<0.05 or 0.01). Conclusions Participating humanistic care can improve the quality of life and improve the psychological state, and the clinical effect is significant, it is worthy of being popularized and applied.

Objective To evaluate the efficacy and clinical value of percutaneous transluminal angioplasty(PTA)with stenting for the treatment of superior vana cava syndrome(SVCS)with malignant causes.Methods A total of 13 patients with SVCS with malignant causes were enrolled in this study.Among the patients,2 had mediastinal cancer,and 11 had metastatic mediastinal tumor.The malignancy of the primary tumors of the 11 patients,including pulmonary cancer in 8,esophageal cancer in 2,and breast cancer in 1,were all confirmed by pathological examination.Via the right femoral vein,a pigtail catheter was introduced percutaneously into the proximate or remote end of the stenotic segment for the visualization of the SVC.After the location,length,and gravity of the stenosis were determined,Wallstent(Boston Scientific,USA)was placed into the SCV,if the patients had no local thrombosis in the stenotic segment.In one patient,a Z-shape stent(COOK,USA)was inserted simultaneously.For the cases complicated with thrombosis,the Wallstent was inserted after local thrombolysis.Results The procedure was completed in all the 13 patients with a success rate of 100%.The average length of the stenotic segment was 4.3 cm(3-6 cm).In one patient,two stents were used,while in the others only one stent was inserted.Thrombolysis was carried out before stenting in 6 patients.The intravenous pressure at the proximate end of the stenotic segment was determined with the patients supine before and after stenting.The pressure decreased from(26.2?1.6)cm H2O to(4.3?0.8)cm H2O after the operation.Postoperative angiography showed no collateral vein in the patients.The SCVS disappeared 0 to 3 days after the surgery.The patients were followed up for 8-26 months with a median of 13.During this period,8 patients died of multiple organ failure caused by multiple metastasis of the primary tumor in 4 to 10 months;the other 5 patients survived(3 of them received further therapies)without recurrence of SCVS.Conclusion PTA with stenting combined with local thrombosis is an effective and invasive treatment for patients with SCVS with malignant causes.

Objective To summarize the practical experience of 2 cases of anemia following living related intestinal transplantation.Methods The clinical data of 2 cases of anemia following living related intestinal transplantation were studied retrospectively. After the surgical procedure regiments of blood transfusion, hemostasia, to cut down the dosage of some drug, to fill up raw material of hematopoientic system and requisite nutrition support were used to treat the patients. Results Four weeks later, the diseased conditions of the two patients became better and better. The index of hemoglobin were increased remarkably, to normal level 100 to 120?g/L.Conclusion Anemia is one of the common syndrome in living related intestinal transplantation. The correction of anemia is very important in treating such patients.

Objective To investigate improvements in the diagnosis and treatment of primary malignant tumor of the duodenum. Methods The clinical data of 54 patients with primary malignant tumor of the duodenum treated during a period of 6 years were analysed retrospectively. Results Tumors located in the first, second, third and fourth parts accounted for 6 cases(11.1%), 44 cases(81.5%), 2 cases(3.7%), and 2 cases(3.7%) respectively; and among them, ampullary tumor accounted for 38 cases(86.4%) of tumor of descending portion of duodenum and 70.4% of the total number of duodenal tumors. The main clinical presentation included jaundice, upper abdominal pain, weight loss, abdominal distention, and gastrointestinal obstruction. Upper abdominal pain, no positive signs and abdominal mass were found in 72.0%, 20.0% and 8.0% respectively on abdominal examination. Preoperative associated cholecystopathy accounted for 37.0%. The accuracy rate of duodenoscopy and ERCP in preoperative diagnosis was 94.4%, and 77.8% respectively. Preoperative diagnostic accuracy rate was 27.8%. Panceaticoduodenectomy was performed in 38 cases, duodenectonmy in 1 case, palliative resection of tumor in 9 cases, and tumor was inoperable in 6 cases. Radical resection rate was 72.2%. The postoperative 3- and 5-year survival rate was 40.6% and 21.9%, respectively. After palliative resection, death occurred from 1month to 24months. Conclusions The tumors in the ampullary region account for the majority of primary malignant tumors of the duodenum and are mainly adenocarcinoma. The symptoms of advanced stage are complicated, and specific signs on abdominal examination are few. Associated cholecystopathy is relatively ferquent and preoperative accurate diagnostic rate is low. The examinations of first choice are duodenoscopy and ERCP, and radical panceaticoduodenectomy can extend survival time.

Objective To investigate the prevalence of Helicobacter hepaticus (H. hepaticus)infection in various species of mice from different regions of China in order to find the role of H. hepaticus in development of hepatitis, liver cancer and tumors in lower digestive tract in mice.Methods One hundred and fourteen mice, including C57BL/6 mice (n= 39), BABL/C mice (n=45),SCID mice (n=14) and C3H mice (n=18), were collected from different regions of China. The serum anti-H, hepaticus-IgG and fecal H. hepaticus antigen were determined by using ELISA. Polymerase chain reaction analysis (PCR) was used to screen Helicobacter genus-specific 16SrRNA and H. hepaticus species-specific 16SrRNA. The feces were cultured and identitied for Helicobacter infection in 114 mice. The H. he paticus infection was identified as one of above tests being positive.Results Of 114 mice, 25 (21.9%) mice were infected with Helicobacter species. The mice infected with H. hepaticus accounted for 44. 0% (11/25) with SCID and C3H mice in high prevelence.Meanwhile, the PCR examination revealed that the rest 56.0% (14/25) mice were infected with other Helicobacter species. Conclusion Besides H. hepaticus infection, the other Helicobacter species infections are also existed in China.

AIM: To determine the mycoplasma infection and the drug resistance in outpatients with NGU. METHODS: Mycoplasma culture, identification and drug sensitivity assay were carried out with samples of 472 NGU patients by using one complex mycoplasma kit. RESULTS: 153 in 472 cases showed mycoplasma positive. The total positive rate was 32.4%. The positive cases of Uu, Mh and mixed both infection were 112( 23.7%), 11( 2.3%), and 30( 6.4%), respectively. The female positive rate was found significantly higher than that of male (? 2= 4.157,P

OBJECTIVE: To explore the correlation between syndrome differentiation and CT quantitative diagnosis of fatty liver. METHODS: One hundred and thirteen cases of fatty liver verified clinically accepted plain CT scan after syndrome differentiation (syndrome of stagnation of liver qi and spleen deficiency, syndrome of intermingled phlegm and blood stasis, syndrome of phlegm-dampness blocking internally, syndrome of deficiency of liver and kidney, syndrome of interior dampness-heat), and then the CT values of the liver and the spleen were measured respectively. RESULTS: It was shown that there was a correlation between the syndrome differentiation and the fatty infiltration in the liver. Significant differences of the distribution of fat and the ratio of liver-spleen were found among the five different syndromes (P<0.05). Diffused, mild fatty liver mainly displayed syndrome of stagnation of liver qi and spleen deficiency. CONCLUSION: Syndrome differentiation of fatty liver is correlated with CT quantitative diagnosis, which can be discriminated by the ratio of liver-spleen.

Objective To construct HaCaT cell lines stably expressing the wild type human GJB6 gene or its mutant by using a Tet-On lentiviral vector, and to lay an experimental foundation for studies on pathogenesis of hidrotic ectodermal dysplasia. Methods The wild-type human GJB6 gene and its mutant (A88V)were amplified by PCR, and then inserted into the Tet-on lentivirus plasmid to construct recombinant lentivirus vectors. The recombinants were identified by gene sequencing and enzymatic digestion. Cultured HaCaT cells were classified into three groups to be transfected with a negative control lentiviral vector (NC group), the lentivirus vector expressing the wild-type human GJB6 gene (WT group), or the lentivirus vector expressing the mutant human GJB6 gene (MU group). Puromycin was used to select HaCaT cell clones stably expressing the GJB6 gene which encodes the connexin 30 (Cx30)protein. The selected HaCaT cell clones were cultured with or without tetracycline for 48 hours, thereafter, real-time PCR(RT-PCR) was performed to detect GJB6 gene mRNA expression, Western-blot analysis to measure expressions of Cx30 and FLAG-tag proteins, and cell counting kit 8 (CCK8)assay to evaluate cellular proliferative activity. Results Enzymatic digestion and gene sequencing showed that recombinant lentivirus plasmids were successfully constructed. RT-PCR showed evidently increased mRNA expression of the GJB6 gene in stably transfected HaCaT cells. Moreover, the expression abundance of the GJB6 gene was 112.369 times higher in the WT group induced by tetracycline than in that without tetracycline treatment (P < 0.05), and 2.249 times higher in the MU group induced by tetracycline than in that without tetracycline treatment (P < 0.05). Western-blot analysis showed that Cx30 and FLAG-tag proteins were stably expressed in the WT group and MU group after induction with tetracycline, while neither of them was observed in the WT group or MU group without tetracycline treatment, or in the NC group. Significant differences were noted in cellular proliferative activity (expressed as the absorbance value at 450 nm)between the MU group with and without tetracycline treatment and between the WT group with and without tetracycline treatment at 4, 8, 12, 24, 36 and 48 hours (all P <0.05), but not between the NC group with and without tetracycline treatment at any of the above time points (all P >0.05). Conclusion HaCaT cell lines which stably express the wild-type GJB6 gene or its mutant(A88V)are successfully constructed.

Animals ; Dentistry ; Swine ; Swine, Miniature