Objective: To observe the influence of silencing MAT1 gene by short interfering RNA (siRNA) on the proliferation and invasion of human pancreatic cancer cells and discuss the feasibility of using MAT1 gene as therapeutic target for treatment of pancreatic cancer. Methods: BxPC-3 cells were transfected with sequence-specific siRNA targeting MAT1 gene with liposome mediation. The mRNA and protein expression of MAT1 were confirmed by RT-PCR and Western blot, respectively. The cell proliferation was measured by Trypan blue exclusion staining. The invasion ability was determined by Boyden chamber model in vitro. Results: The mRNA and protein expression of MAT1 were significantly down-regulated by siRNA in BxPC-3 cells compared with the control groups. The expression of MAT1 mRNA was reduced by 55.2% and 64.3% at 24 h and 48 h, respectively (P <0.01). The cell proliferation and invasion ability of BxPC-3 cells were significantly inhibited in vitro (P < 0.01). Conclusion: The results suggest that siRNA targeting MAT1 gene inhibits the cell proliferation and invasion of BxPC-3 cells in vitro. MAT1 may be a potential target for gene therapy of human pancreatic cancer.

The effect of taurine on IL-1?induced inhibition of insulin release was investigated with cultured neonatal rat pancreatic islet cells.The results indicated that:①Insulin release, both the basal and glucose-stimulated,could be significantly inhibited by addition of IL-1?(5～20U/ml).②The inhibitory effect of IL-1? on insulin release could be reversed by taurine and this effect was directly related to the dose and action time of taurine.

Objective: To explore the early diagnostic value of dynamic changes for high-sensitive troponin I (hs-cTnI) in patients with acute coronary syndrome (ACS).
Methods: A total of 186 ACS patients treated in our hospital from 2014-02 to 2015-04 were studied. The patients were divided into 2 groups:AMI group, n=169 and UA group, n=17, in addition, there was a Control group, n=13 healthy subjects. Blood levels of hs-cTnI were measured at admission and 2h, 4h after admission. Dynamic changes of hs-cTnI was calculated by slop coefifcient of hs-cTnI (Δhs-cTnI) at 3 time points and relative changes of hs-cTnI values. ROC curve was made by SPSS 16.0 statistical software and the best diagnostic cutoff point was determined by Youden index.
Results: In clinical practice, hs-cTnI=1 ng/ml was critical condition, hs-cTnI=0.15 ng/ml was recommended for AMI diagnosis. When hs-cTnI<1 ng/ml at admission, the AUC of AMI vs UA and AMI vs Control for 0 h hs-cTnI were 0.6746 and 0.8844;for relative changes of hs-cTnI were 0.9806 and 0.9631;forΔhs-cTnI were 0.9521 and 0.9778 respectively. Thus, the best diagnostic cutoff value of AMI for relative changes of hs-cTnI was 0.6705, sensitivity 70.59%, speciifcity 91.49%;forΔhs-cTnI was 0.0075, sensitivity 68.75%, speciifcity 97.78%. When hs-cTnI<0.15 ng/ml at admission, the AUC of AMI vs UA and AMI vs Control for 0 h hs-cTnI were 0.5677 and 0.7000;for relative changes of hs-cTnI were 0.9228 and 0.9975;forΔhs-cTnI were 0.9044 and 0.8906 respectively. Thus, the best diagnostic cutoff value of AMI for relative changes for hs-cTnI was 2.923, sensitivity 81.25%, speciifcity 94.12%;forΔhs-cTnI was 0.01125, sensitivity 76.47%, speciifcity 93.75%.
Conclusion: AMI could not be effectively diagnosed by hs-cTnI alone at admission, using combined relative changes of hs-cTnI andΔhs-cTnI was superior to 0 h hs-cTnI for AMI diagnosis.

Objective To observe effects of ganoderma lucidum triterpenoids(GLT) on learning and memory function and anti-oxidative ability of aging model mice induced by D-galactose. Methods Senile model mice were established by D-galactose hypodermic injection for 8 weeks.GLT had been administered to two therapy groups.All the mice of different groups were tested with Morris water maze.Then the mice were killed and biochemically assayed of total anti-oxidative capacity(T-AOC),superoxide dismutase(SOD) and malondialdehyde(MDA) in the brain. Results The model mice showed worse ability in learning and memory in comparison with control mice.The T-AOC activity and SOD activity in the brain decreased and the MDA content increased in model rats in comparison with control.GLT significantly improved the changes mentioned above. Conclusion GLT improved the learning and memory dysfunction in aging model mice by modulation of the anti-oxidative ability.

Adult ; Female ; Humans ; Male ; Medical Staff ; Middle Aged ; Occupational Exposure ; Phosgene ; poisoning ; Poisoning ; etiology ; Young Adult

Objective To study the prevention and treatment of severe complications of percutaneous radiofrequency ablation(PRFA)for hepatic malignancy. Methods A series of 939 patients with primary hepatic carcinoma or hepatic metastasis confirmed by pathological examinations or clinical manifestations underwent 1098 treatments of PRFA between January 2006 and December 2009. All the patients were followed up to study the short-or long-term complications related to PRFA. Results Complications developed in 9 patients: bile duct injury (4 patients), hemothorax (2 patients), and intra-abdominal hemorrhage (3 patients). The incidence of complication was 0.82% (9/1098) and the complication-related mortality was 11.1% (1/9). Conclusions Although PRFA which is minimally invasive, is a safe and effective treatment, there were still risks for this procedure, especially when the tumor is located at the portahepatic region or the patient has coagulopathy. Some serious complications can be prevented. It is important to observe the strict indications for RFA and to carry out the procedure carefully. Early detection of complication is important.

AIM: To investigate the changes of apoptosis in isolated pancreatic islet cells, insulin secretion, expression of Bcl-xL and Bax induced by combination of IL-1?, TNF-? and IFN-?, and effects of taurine on them. METHODS: Isolated pancreatic islet cells from Wistar rat were incubated in monolayer in vitro. NO-2/ NO-3 production, NOS activity, insulin secretion, the protein expression of Bcl-xL and Bax, percentage of islet cell apoptosis and DNA fragmentation in pancreatic islet cells incubated with combination of IL-1?, TNF-? and IFN-? were measured, and the effects of taurine on the changes of them were further investigated. RESULTS: Combination of IL-1?, TNF-? and IFN-? induced a significant increase in percentage of pancreatic islet cell apoptosis, NO-2/ NO-3 production and NOS activity, DNA ladder appearance, a decrease in insulin content, up-regulation in the protein expression of Bax and down-regulation in the protein expression of Bcl-xL (P

OBJECTIVETo improve the diagnosis and treatment of penile metastasis from rectal carcinoma.

METHODSWe reported a case of penile metastasis secondary to rectal adenocarcinoma, reviewed the relevant literature, and discussed the common origins, clinical features, pathogenic mechanisms, diagnosis and treatment of this disease.

RESULTSThe patient was a 54-year-old male, with metastatic penile tumors secondary to rectal adenocarcinoma, with serious adhesion to the surrounding tissue and metastasis to the liver. As treatment, we performed colostomy to relieve voiding difficulty, followed by combination chemotherapy with oxaliplatin, 5-fluorouracil, and levofolinate. The patient died 10 months later as a result of systemic failure.

CONCLUSIONPenile metastatic malignancy has a poor prognosis. Early diagnosis and combined and individualized therapies may improve the quality of life, relieve pain and prolong the life of the patient.

Adenocarcinoma ; secondary ; therapy ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Combined Modality Therapy ; methods ; Fluorouracil ; administration & dosage ; Humans ; Liver Neoplasms ; secondary ; therapy ; Male ; Middle Aged ; Organoplatinum Compounds ; administration & dosage ; Penile Neoplasms ; secondary ; therapy ; Quality of Life ; Rectal Neoplasms ; pathology

BACKGROUND: Previous studies have confirmed that rabbit bone marrow mesenchymal stem cells (BMSCs) can differentiate into osteoblasts under osteogenic induction in vitro, stably express the specific phenotype of osteoblasts and have osteogenic ability. Calf cortical bone scaffold with partial cancellous bone has good biocompatibility and degradability, which can be used as a carrier material of bone marrow mesenchymal stem cells. OBJECTIVE: To combine rabbit BMSCs with calf bone composite according to the basic principles of bone tissue engineering and to observe the osteogenesis in the New Zealand white rabbits after implantation of BMSCs/calf bone composite into the ilium, thereby providing a direct evidence for preliminary clinical application of tissue-engineered bone products.METHODS: BMSCs/calf cortical bone scaffold with partial cancellous bone (tissue-engineered bone group), simple calf heterogeneous bone (heterogeneous bone group) or autologous iliac bone (autologous iliac bone group) was randomly implanted into the rabbit ilium. The changes of implant surface and tissue reactions around the implant were observed.X-ray examination was performed to observe osteogenic changes at 4, 8, 12, 24 weeks after implantation. Immunohistochemistry staining was used to observe the expression of bone morphogenetic protein 2.RESULTS AND CONCLUSION: After heterogeneous bone implantation, the wound healed well, and there were no systemic or local inflammation and toxicity reactions in all groups. The X-ray results showed that at postoperative 24 weeks, the implant was basically fused with the host bone in the tissue-engineered bone group, but the fusion was unsatisfactory in the heterogeneous bone group. The process of ossifications from cartilages was observed in all groups by hematoxylin-eosin staining, and bone morphogenetic protein 2 was positive for immunohistochemical staining. Findings from in vivo experiments indicate that rabbit BMSCs seeded onto the calf cortical bone scaffold with partial cancellous bone could construct tissue-engineered bone by osteoinductation in vitro in the rabbits.

Tangcao pill is commonly applied in adjuvant and even alternative therapy for patients with AIDS. However, the herb contains complex ingredients, but with unknown effect against anti-HIV drug and unknown function. Because CYP450 emzyme is the main metabolic enzymes of the drug, it is of important significance to study the regulation of CYP450 enzymes before and after the combined administration of Tangcao pill and EFV. Proteomics, due to its high throughout and high sensitivity, has been widely applied in CYP450 enzyme study. In this paper, liver microsomes were separated through differential centrifugation. Their proteins were separated through SDS-PAGE. The three protein bands that CYP450 enzymes were located were cut and identified by liquid chromatography tandem mass spectrometry. Totally 16 CYP450 isoenzymes were identified. Furthermore, in order to make a quantitative analysis on the effect of tang herb on CYP450 emzyme, the multiple reaction monitoring (MRM) technology based on MS was adopted. The CYP2C11 was selected based on the results of the mass spectrum identification of proteins. The characteristic polypeptides were obtained through searching Expasy blast database. The m/z of the fragment ions was less than 800. In the paper, the m/z of ion pairs of CYP2C11 were 711.5/232.1, 711.5/319.2, 711.5/466.2 and 711.5/595.3, and the m/z of ESAT-6 (internal standard, IS) were 735.5/215.3, 735.5/389.3, 735.5/460.3 and 735.5/524.3. The relative peak (analyte/IS) area was adopted for the relative quantitative analysis. Compared with the EFV single administration group, the EFV and Tangcao pill combined administration group showed a 1.6-fold increase in CYP2C11. The results of the paper indicated that Tangcao pill may affect drug metabolism by regulating metabolic enzymes such as CYP2C11, but the specific mechanism still unknown.
Animals ; Cytochrome P-450 Enzyme System ; chemistry ; genetics ; metabolism ; Drugs, Chinese Herbal ; administration & dosage ; Electrophoresis, Polyacrylamide Gel ; Male ; Microsomes, Liver ; chemistry ; drug effects ; enzymology ; Proteomics ; Rats ; Rats, Sprague-Dawley