Objective To observe the mechanism of the change in runx3 in gastric carcinoma its difference and with p53 mutation.Methods A total of 30 cases of gastric carcinoma were taken from clinical operation.PCR-SSCP method was used to detect mutations in exons 2,3,4 of runx3 gene in the gastric carcinoma.The methylation status of runx3 gene was examined by methylation-specific polymerase chain reaction(MS-PCR),PCR-SSCP method was used to detect mutations in exons 5,6,7,8 of p53 gene in the gastric carcinoma.Results Two cases with mutation were found,methylation of runx3 promoter region was confirmed in 87%(26/30) specimens of gastric carcinoma,53.3%(16/30)cases were confirmed with mutation in the p53 gene.The rate of methylation of runx3 was higher than the rate of mutation of p53(P

In-stent thrombosis after cessation of antiplatelet medications in patients with drug-eluting stents (DES) is a significant problem in medical practice, particularly in the perioperative period. We report a case of an 87-year-old man with a medical history of hypertension, coronary artery disease and chronic atrophic gastritis. Very late thrombosis of a sirolimus-eluting stent occurred 1207 days after implantation, seven months after discontinuation of clopidogrel, and the interruption of aspirin 13 days in preparation of an elective endoscopic gastroin-testinal procedure presented with acute myocardial infarction. The patient was treated with thrombectomy and successfully revascularized with superimposition of two sirolimus-eluting stents. Medications administered in the catheterization laboratory included low molecular weight heparin and nitroglycerin. Flow was defined as grade 2 according to the thrombolysis in myocardial infarction scale. Electrocardio-gram after the procedure revealed persistent, but decreased, ST-segment elevation in the anterolateral leads. The patient recovered and was discharged on aspirin and clopidogrel indefinitely. There was no cardiac event during the two year follow-up period. This case underlines the importance of maintaining the balance of thrombosis and bleeding during perioperation of non-cardiac procedure and the possible need for continuation of aspirin therapy during periendoscopic procedures among patients with low bleeding risks who received DES.

Objective:To explore the correlation among morning blood pressure surge (MBPS) ,ambulatory arterial stiffness index (AASI) and carotid artery intima‐media thickness (IMT) .Methods :A total of 212 hypertension pa‐tients received 24h ambulatory blood pressure monitoring and carotid artery ultrasonography to measure carotid IMT .According to IMT thickened or not ,they were divided into normal IMT group (n=84) and thickened IMT group (n = 128) ,then MBPS and AASI were calculated .According to MBPS existed or not ,patients were divided into MBPS group (n = 120) and no MBPS group (n = 92) ,then the correlation among MBPS ,AASI and carotid IMT were observed .Results : Compared with normal IMT group ,there were significant rise in AASI [ (0.42 ± 0.13) vs .(0.68 ± 0.14)] and MBPS value [ (25.94 ± 4.57) mmHg vs .(36.57 ± 8.41) mmHg] in thickened IMT group , P < 0.05 both ;compared with no MBPS group ,there were significant rise in AASI [ (0.43 ± 0.13) vs .(0.71 ± 0.14)] and IMT [(1.01 ± 0.20) mm vs .(1.25 ± 0.17) mm] in MBPS group ,P < 0.05 both ;Linear correlation analysis indicated that MBPS and AASI were positively correlated with carotid IMT ( r = 1.22 ,0.51 , P < 0.05 both) .Conclusion : Morning blood pressure surge and ambulatory arterial stiffness index are independent risk factors for carotid artery intima‐media thickness ,and they possess predictive value .

Objective:To compare the efficacy on root canal debridement of three ultrasonic units Odontoson-M, P-MAX and Spartan. Methods: Extracted healthy premolars with one single straight canal were used. The canals were prepared by step-down technique. After preparation, the canals were received ultrasonic irrigation and split longitudinally. Debris scores were calculated after photographing with a digital camera. The number of visible open dentinal tubules were evaluated by SEM. Results: At middle third of the canals, when irrigated with 5 g/L NaOCl, the debris score in group Odontoson-M was significantly lower than that in other groups(P

Adolescent ; Adult ; Aged ; Bone Nails ; Female ; Fracture Fixation ; methods ; Fracture Healing ; Humans ; Humeral Fractures ; surgery ; Male ; Middle Aged

Objective This study investigates the relationship of serum irfflammatory cytokine levels with intracranial pressure (ICP) in patients with severe traumatic brain injury (TBI) after surgery.Methods A total of 32 cases with severe TBI and placement of ICP monitor were prospectively enrolled.Serum was collected before surgery and every 12 h after surgery.Cytokines levels of interleukin (IL)-1β,IL-8,and tumor necrosis factor (TNF)-α were analyzed and compared with outcome of patients.Hourly values of ICP were recorded.The degree of ICP above treatment threshold (20 mm Hg) were calculated every 12 h as pressure times time dose(PTD-ICP20),which was compared with serum cytokine levels before (Pre) and after (Post) the 12-hour time period using linear regression method.Results Serum IL-1β (P＜0.05),IL-8 (P＜0.01) and TNF-a (P＜0.01) levels elevated dramatically after severe TBI and were significantly associated with outcome of patients.Mean PTD-ICP20 was (42.9 ± 60.2)mm Hg/h and was correlated with increased Pre-IL-8 (r=0.554,P＜0.001),Pre-TNF-α (r=0.597,P＜0.001),Post-IL-8 (r=0.629,P＜0.001) and Post-TNF-α (r=0.538,P＜0.001) levels.Conclusion Serum IL-8 and TNF-α demonstrated the most promising candidate bio.rnarkers of impending ICP elevation in this study.These findings indicate a feasible way of monitoring patients with severe TBI.

Objective To analyse the clinical features in general paresis of insane(GPI)as to offering an early diagnosis. Methods A retrospective analysis of 2 cases of GPI was focused on their clinical manifestations. Results The clinical features of GPI showed: (1) Chronic onset, progressive development in 2 cases; (2) Dementia was key symptom.Hasegawa dementia scales were 4 and 17 in 2 cases.2 cases accompanied with abnormal mentality,such as delusion of grandeur ,euphoria and so on;(3)GPI have features of pupil change,dysarthria,muscular tension,abnormal reflection; (4) Serum and cerebrospinal fluid (CSF) syphilis antibody reaction manifested positive, CSF protein content was increased significantly, and cells increased ( with lymph cell mainly ); (5) Head MRI manifested: cerebral atrophy in 2 cases, multiple abnormal signals in cerebral parenchyma in 1 case. Conclusions GPI misdiagnosis rate is high. Important basis of diagnosis remains on clinical manifestations, laboratory and imaging examinations.

OBJECTIVE: To set up a natural degeneration model of chondrocytes derived from endplate of intervertebral discs of rats in order to offer an appropriate carrier for the study on mechanism of intervertebral disc degeneration. METHODS: The method of enzyme digestion combined with natural subculture was used to set up the in vitro natural degeneration model of chondrocytes derived from the endplate of intervertebral disc of rats. The morphological appearances and microstructures of the chondrocytes of different generations were observed. The expression of collagen II in chondrocytes was detected by immunocytochemical method. RESULTS: The chondrocytes derived from the endplate of intervertebral disc expressed collagen II. After 13 days of culture, the chondrocytes of generation III showed that the ability of cell division descended, the nucleoli became unclear, the cells deformed obviously, fusiform shape with weak optical activity appeared, and the intercellular space was enlarged. There were vacuoles and lipid droplets in cytoplasm. The synthesis of collagen II, as well as the cell proliferation rate, descended notably. All results showed the natural degeneration process of the chondrocytes. CONCLUSION: The in vitro natural degeneration model of chondrocytes derived from endplate of intervertebral discs of rats was successfully established. This can offer the cytological basis for study on the mechanism of intervertebral disc degeneration.

Objective To screen the mimic epitopes of Rh(D)blood group antigens and identify their immunity from phage display peptide library.Methods A twelve mer phage peptide library was biopanned with anti-Rh(D)monoclonal antibody immobilized on plastic surface.After three round panning,thirty-five clones were randomly selected and positive clones were identified by ELISA and cross-reaction,followed by antibody competition inhibition assay and DNA sequencing to obtain the mimic epitopes of Rh (D)blood type antigens.The target phage clones were characterized and the antigenicity was analyzed by Western blot.Results After the third round screening,phages were enriched,and eleven positive clones were obtained.According to sequencing and competition inhibition analysis,the same"-WP-Q-"structure existed in seven of the eleven clones,and they had more than 40%inhibition ratio.The other clones had no same characteristics with low inhibition ratio possibly due to non-specific binding.Western blot analysis indicated that these phage clones could be specifically recognized by the anti-Rh(D)serum and they shared the same antigenicity of Rh(D)protein.Conclusions Rh(D)mimotope of"-WP-Q-"structure is successfully obtained by phage peptide library screening with anti-Rh(D)monoelonal antibody.The results lay the foundation for further exploration of pathogenesis and vaccine development of Rh(D)hemolytic diseases of newborn.

Animals ; Comet Assay ; DNA Damage ; drug effects ; Lymphocytes ; drug effects ; Male ; Organometallic Compounds ; toxicity ; Rats