Objective To assess the mutation in exon 8 of C1 esterase inhibitor(C1INH)gene in a patient with hereditary angioedema(HAE).Methods Genomic DNA was extracted from a female patient with HAE as well as her mother and a normal human control.The fragment of exon 8 of C1INH gene was amplified by PCR and inserted into plasmid carrier pUC19 with the help of ligase.Then,the recombinant plasmid was transformed into competent cells of E coli TG1 strains.After culture of positive transformant,plasmid DNA Was extracted and subjected to sequencing.SDS-PAGE and We:stem blot were performed on the sera of the patient to detect the concentration and function of C1INH protein.Results An A1677G mutation at exon 8 of C1INH gene.which resulted in a substitution of isoleucine to valine at codon 440,Was found in the patient who SUfiered from HAE type I.Additionally.SDS-PAGE and Western blot revealed that the molecular weight of C1INH protein was 96 000.but not 105 000 observed in noHnal human control.Conclusion The newly identified mutation 1440V.which is located at P4 residue of reactive center loop in C1INH.may result in conformational alteration of C1INH.

OBJECTIVESTo investigate the different effects of closed suction drainage and non-drainage for total knee arthroplasty(TKA) and to provide reference information for the choice of clinical treatment.

METHODSRandomized controlled trials (RCTs) of closed suction drainage versus non-drainage for TKA were collected from the Cochrane Library, PubMed, EMBase, Springer, CBM, CNKI, VIP and WANFANG database. Methodological quality of the RCTs was independently assessed using the Consolidated Standards of Reporting Trials (CONSORT) checklist. Data analysis was performed by RevMan Version 5.1.6 based on the methods recommended by the Cochrane Collaboration.

RESULTSTwenty-one RCTs without bias were finally enrolled, and 1920 enrolled knees were identified into drainage group (979 knees) and non-drainage group (941 knees). A lower incidence of soft tissue ecchymosis was demonstrated in the closed suction drainage group (OR = 0.30, 95%CI: 0.24 - 0.49); however, compared with the non-drainage group, more loss of blood (MD = 320.03, 95%CI: 235.31 - 404.76) and more need of homologous blood transfusion (OR = 1.83, 95%CI: 1.26 - 3.29) were found in the closed suction drainage group. In addition, there were no significant differences of postoperative infection (OR = 0.53, 95%CI: 0.22 - 1.32), deep venous thrombosis (OR = 1.00, 95%CI: 0.46 - 2.18), and the joint range of motion (MD = -0.04, 95%CI: -1.11 - 1.02) between the two groups.

CONCLUSIONBased on the current evidence, no obvious advantage is demonstrated for closed suction drainage, in comparison with non-drainage for TKA.

Arthroplasty, Replacement, Knee ; Drainage ; statistics & numerical data ; Humans ; Postoperative Complications ; epidemiology ; Randomized Controlled Trials as Topic ; Range of Motion, Articular ; Venous Thrombosis ; epidemiology

OBJECTIVETo explore the indication and efficacy of transanal local excision for low rectal cancer.

METHODSA total of 40 consecutive patients undergoing transanal local excision of low rectal cancer were analyzed retrospectively.

RESULTSThe mean operative time was 50 (30-85) minutes. The mean intraoperative blood loss was 40 (10-100) ml. The mean hospital stay was 5 (2-10) days. The local recurrence rate was 20.0% (8/40). The 5-year survival rate was 90.0%. Local recurrence rate was 17.9% (5/28 cases) for T1, and 25.0% (3/12) for T2 lesions. However, the difference between the two groups was not statistically significant (P=0.61). Local recurrence rate was significantly lower for moderate differentiated than that for well-differentiated cancer [12.9% (4/31) vs. 44.4% (4/9), P=0.037]. Tumor diameter less than 3 cm was associated with a significantly lower local recurrence rate as compared to the counterparts (10.7% vs. 41.7%, P=0.03). No significant correlations were found between local recurrence and other variables including tumor location (P=0.93), tumor classification (P=0.53), and method of surgical excision (P=0.41).

CONCLUSIONSIndications for transanal local excision of low rectal cancer include T1 and T2 tumors with well differentiation and the diameter less than 3 cm. Clinical outcome may be favorable if patients are carefully selected for transanal local excision.

Adult ; Aged ; Aged, 80 and over ; Anal Canal ; surgery ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Neoplasm Recurrence, Local ; Rectal Neoplasms ; pathology ; surgery ; Retrospective Studies ; Survival Rate ; Treatment Outcome

We examined the effects of conjugated linoleic acid (CLA) on growth, fatty acid composition and enzyme activity of fatty acid oxidation in the liver of large yellow croaker. We divided 1600 fish (average initial weight 150 g) into 4 groups and reared them in 8 cages. Four dietary treatments were formulated to contain 0%, 1%, 2% and 4% (w/w) CLA, respectively. The fish were fed for 10 weeks ad libitum twice daily. We found that the dietary CLA had no effect on growth, biometric parameters and whole body proximate (P>0.05), but showed some significant effects on the fatty acid composition in both muscle and the liver. The activities of lipogenic enzymes were slightly depressed in fish fed with increasing levels of CLA when compared with control (P>0.05). Dietary CLA supplementation had no effects on liver lipid content, but significantly increased the contents of saturated fatty acids (SFA) and polyunsaturated fatty acids (PUFA) (P<0.05) and decreased monounsaturated fatty acid (MUFA) content in both muscle and the liver. Dietary CLA inclusion resulted in significant increases of the biologically active cis-9, trans-11 and trans-10, cis-12 isomers in both tissues (P<0.05). The total accumulation of CLA was higher in the liver (3.83%, w/w) than in muscle (3.77%, w/w) when fed with 4% (w/w) CLA. This study demonstrates that large yellow croakers are capable of absorbing and depositing CLA and long-chain n-3 PUFA in the liver and muscle, showing that this species fed with CLA could be an important human food source for these healthful fatty acids.
Animals ; Dietary Fats ; administration & dosage ; Dietary Supplements ; Fatty Acids ; metabolism ; Linoleic Acid ; administration & dosage ; Lipogenesis ; drug effects ; physiology ; Liver ; drug effects ; metabolism ; Perciformes ; growth & development ; metabolism

BACKGROUNDUlcerative colitis (UC) is associated with differential expression of genes involved in inflammation and tissue remodeling. MicroRNA (miRNA) plays an important role in the pathogenesis of UC by regulating the gene expression at the post-transcriptional level and control crucial physiological processes. This study aimed to identify aquaporin 8 (AQP8) expression and its relationship with miRNA in UC patients.

METHODSHuman colon samples, in this study, were obtained from 20 patients with UC and 16 healthy subjects undergoing diagnostic colonoscopy at the Chinese People's Liberation Army General Hospital between December 2009 and June 2010. We screened different genes from UC tissues and healthy subjects using genome-wide microarray, quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blotting. Regulation of gene expression by miRNAs was assessed by luciferase reporter construct assays and transfection of specific miRNA mimics and inhibitor.

RESULTSWe identified that 1596 genes were increased and 1301 genes were decreased in UC patients compared to healthy subjects. Among them, we focused on the analysis of AQP8 which was decreased three folds in UC tissues (P < 0.01). The expression of AQP8 mRNA and protein were decreased in UC tissue and tumor necrosis factor (TNF)-α treated HT29 cells compared with controls (P < 0.05). We searched candidate target miRNAs of AQP8 through bioformatics and the luciferase report assay analysis indicated that miR-424, miR-195, miR-330, miR-612, and miR-16 which has complementary site in the 3-untranslated region (3'UTR) of AQP8 could decrease the relative luciferase activities by 10% - 45%.

CONCLUSIONAQP8 and its relationship with miRNAs may be involved in the pathogenesis of UC.

Adult ; Aged ; Aquaporins ; genetics ; Colitis, Ulcerative ; genetics ; Female ; Gene Expression Regulation ; HT29 Cells ; Humans ; Male ; MicroRNAs ; physiology ; Middle Aged ; Tumor Necrosis Factor-alpha ; pharmacology

OBJECTIVETo study the molecular mechanism of exercise to improve cardiovascular health, and exploring the effect of different intensity exercise on AMP activated protein kinase (AMPK) protein expression and phosphorylation of vascular endothelial cells in rat.

METHODSForty-eight Wistar rats were divided into control group (group C), model group (group AS), low intensity exercise model group (ASL) and high intensity exercise model group (ASH). The serum inflammatory factor concentrations such as IL-6, TNF-alpha, CRP were studied, and the endothelial cell total AMPK and p-AMPK protein were checked by means of Western blot.

RESULTS(1) The level of IL-6 between AS group and control group had no significant difference, the value of ASH group was markedly increased and had significant difference compared with that of the control group or AS group. The serum TNF-alpha levels of AS group and ASL group were significantly higher than those in control group, but the value of ASH and ASL was significantly lower than that in AS group. The serum concentration of CRP after the AS molding was significantly higher than that of the control group, there was no statistical difference between that of ASL and ASH groups. (2) The total AMPK protein content of ASL and ASH groups was significantly higher than that in control group. When compared between the two groups, there was statistical significance. (3) The value of p-AMPK protein of ASL and ASH groups was significantly higher than that of AS group, the value of p-AMPK protein of ASH group was significantly higher than that of the control group at the same time.

CONCLUSIONExercise can reduce the serum levels of inflammatory factors in atherosclerosis rat, and increase AMPK protein expression and phosphorylation level in endothelial cell.

AMP-Activated Protein Kinases ; metabolism ; Animals ; Atherosclerosis ; metabolism ; C-Reactive Protein ; metabolism ; Endothelial Cells ; metabolism ; Interleukin-6 ; blood ; Male ; Phosphorylation ; Physical Conditioning, Animal ; physiology ; Rats ; Rats, Wistar ; Tumor Necrosis Factor-alpha ; blood

OBJECTIVETo evaluate the risk factors of lateral lymph node metastasis in advanced lower rectal cancer and its correlation with local recurrence and prognosis.

METHODSData from 96 consecutive patients with advanced lower rectal cancer underwent curative surgery with lateral dissection were retrospectively analyzed. The correlations of lateral lymph node metastasis with clinicopathologic characteristics, local recurrence and prognosis were investigated.

RESULTSLateral lymph node metastasis was observed in 14.6 (14/96) of the cases. In 40 patients with tumor diameter > or = 5 cm, 10 (25.0%) patients were found with lateral lymph node metastasis; while in the other 56 patients, only 4 (7.1%) cases were found with lateral lymph node metastasis (P < 0.05). Lateral lymph node metastasis was more frequent in patients whose tumor infiltrated full range of the intestinal wall (70%) than patients with 3/4, 2/4 and 1/4 intestinal wall was infiltrated (12.0%, 6.7% and 6.3%, respectively) (P < 0.05). Lateral lymph node metastasis rate of poorly differentiated carcinomas was significantly higher than those of moderate and well-differentiated ones (30% vs. 9.1% and 4.5%, P < 0.05). Local recurrence occurred in 18.8% (18 of 96 cases) of patients. Local recurrence in patients with positive lateral lymph node metastasis was 64.3%, while 11.0% in those without lateral lymph node metastasis (P < 0.05). Kaplan-Meier survival analysis showed significant improvements in median survival for patients with negative lateral lymph node metastasis over patients with lateral lymph node metastasis (80.9 +/- 2.1 vs. 38 +/- 6.7 months, log-rank P < 0.05).

CONCLUSIONSTumor diameter, degree of tumor infiltration and histological differentiation are significant risk factors of lateral lymph node metastasis in advanced lower rectal cancer. Lateral lymph node metastasis is an important predictor of local recurrence and prognosis of patients.

Adult ; Aged ; Aged, 80 and over ; Female ; Follow-Up Studies ; Humans ; Lymph Node Excision ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; pathology ; Male ; Middle Aged ; Neoplasm Invasiveness ; Neoplasm Recurrence, Local ; Prognosis ; Rectal Neoplasms ; pathology ; surgery ; Retrospective Studies

OBJECTIVETo investigate the impact of 5-aza-2'-deoxycytidine(5-aza-CdR) combined with imatinib on the proliferation, motility, invasion, and apoptosis of gastrointestinal stromal tumors(GIST) cells in vitro.

METHODSMTT assay was used to investigate the effect of the two agents on proliferation of GIST882. Plate colony forming assay was used to determine the number of colony-forming. Motility and invasion abilities were tested to evaluate the inhibitory effect of each agent. Flow cytometry was used to observe apoptosis and cell cycle.

RESULTS5-aza-CdR or imatinib effectively inhibited the growth of GIST882 cells in concentration- and time-dependent manner. The inhibitory rate of combined treatment using 5-aza-CdR and imatinib was significantly higher than that of 5-aza-CdR or imatinib alone(P<0.05). After treatment for 48 h, the apoptosis rates of 5-aza-CdR group (1000 μg/L) and imatinib group (100 μmol/L) were (11.7±1.2)% and (14.6±0.8)%, respectively. Compared with the control group (2.8±0.3)%, the difference was statistically significant(P=0.000). Furthermore, the difference in apoptosis rate was significant between combined treatment group (19.4±1.1)% and single drug treatment group(vs. 5-aza-CdR group, P=0.000, vs. imatinib group, P=0.013). 5-aza-CdR raised G0/G1 ratio and reduced S ratio of GIST882. Imatinib and combined group had no apparent influence on the cell cycle of GIST882 cells.

CONCLUSION5-aza-CdR may be a potential agent of GIST treatment in the near future.

Antimetabolites, Antineoplastic ; pharmacology ; Apoptosis ; drug effects ; Azacitidine ; analogs & derivatives ; pharmacology ; Benzamides ; pharmacology ; Cell Cycle ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cell Survival ; drug effects ; Gastrointestinal Stromal Tumors ; etiology ; pathology ; Humans ; Imatinib Mesylate ; Piperazines ; pharmacology ; Pyrimidines ; pharmacology

OBJECTIVETo summarize lessons learned from an outbreak of severe acute respiratory syndrome (SARS) in China during the spring of 2004.

METHODSData of SARS cases were officially reported by Beijing Municipal Center for Disease Control and Prevention (BCDC) and Anhui Provincial Center for Disease Control and Prevention (APCDC) and results of epidemiological investigations were collected and analyzed.

RESULTSThree generations of 11 cases of SARS were identified during the outbreak. Initial two cases were most likely to be infected in Diarrhea Virus Laboratory of National Institute of Virology, China Centers for Disease Control and Prevention and main mode of transmission was direct contact with SARS patients. Delay in detecting initial case resulted in spread of the illness at hospitals and communities with two generations of secondary cases.

CONCLUSIONSSARS outbreak in 2004 has yielded following lessons for public health globally. (1) Lab bio-safety programs should be made and should be strictly abided by. Studies in highly pathogenic viruses such as SARS coronavirus should be utmost cautious. (2) Management systems of occupational exposure to virus and disease surveillance need to be strengthened to take all risk factors into account so as to detect potential patients with infectious disease as early as possible.

China ; epidemiology ; Disease Outbreaks ; Female ; Humans ; Male ; Occupational Exposure ; prevention & control ; Occupational Health ; Retrospective Studies ; Severe Acute Respiratory Syndrome ; epidemiology ; prevention & control ; transmission

OBJECTIVE:To explore the association between the mitochondrial DNA(mtDNA)3537A/G,5351A/G variant and type 2diabetes mellitus(T2DM)in northem Chinese population.METHODS:The subjects including 614 patients with T2DM in Dalian City,61 of them were collected from family survey,497 of them were collected from Department of Endocrine,Dalian Municipal Central Hospital,and the remained 56 were selected from diverging T2DM patients in Dalian City.Additional 344 cases with normal carbohydrate toierance were served as controls.The mtDNA 3537A/G.5351A/G variants in 614 patients with T2DM and 334 healthy control subjects were examined.By sequencing the mtDNA in 24 cases and 26 controls,2 candidate SNPs in mtDNA were determined,and then genotyping was carried out by using PCR restriction fragment length polymorphism(PCR-RFLP)analysis.RESULTS:The frequency of mtDNA A3537G and A5351G mutation was 2.0%and 2.6% in T2DM patients,respectively,which was 2.1%and 4.2% in the control group.No significant difference had been observed between case and control(P＞0.05).After stratifying by body mass index and blood pressure,we found that the frequency of A5351 G in obesity patients with T2DM was 1.61%,and in obesity control was 15.38%,which had significant difference(P_(Fisher)=0.02,OR=2.76),however,A3537G stili showed no significant difference in all groups(P＞0.05).CONCLUSION:5351A/G in mtDNA ND2 gene may be a variance associated with T2DM in northem Chinese.