0.05)and the TNM staging (P=0.55).A mild elevated compared other pathological classification was found in small cell lung cancer (0.191?0.275).Conclusions The results showed that RFQ-PCR was suitable for measurement of the mRNA level of PLKI in bronchoscopic bioptic specimens.This study suggest elevated expression of PLK1 might play a important role in development of lung cancer,so that PLK1 might be a potential tumor marker for Lung cancers.Advanced studies will be needed to clarify that PLKI mRNA level do not relate to TNM staging and pathological classification.

OBJECTIVETo explore the technique of induction of polyploidy in Salvia bowleyana by colchicine treatment.

METHODThe three kinds of explant of bud, leaf and calli were induced by colchicine treatment.

RESULTThe induction effects were better when the calli was treated by colchicines (15 mg x L(-1)) and the leaf was pre-cultured for one week. The doubling rate was 33.33%, while the majority were wholy doubled plants, and the leaves were thicker and broader, the color was darker, the root was thicker and the stoma size was obviously bigger than the diploid plants. The number of chromosome were 8 to 64. Isoenzyme analysis showed that the enzyme activities between the polyploid and the diploid plants were quite different.

CONCLUSIONInduction of polyploidy by colchicine treatment is efficacious. The part of the doubled plants were identified as homologmous tetraploids.

Chromosomes, Plant ; genetics ; Colchicine ; pharmacology ; Plant Leaves ; anatomy & histology ; genetics ; growth & development ; Plant Shoots ; anatomy & histology ; genetics ; growth & development ; Plants, Medicinal ; anatomy & histology ; genetics ; growth & development ; Polyploidy ; Salvia ; anatomy & histology ; genetics ; growth & development

Objective To investigate the association between obesity and prevalence of metabolic syndrome (MS) with its associated risk factors,in children and adolescents.Methods A stratified random sampling method was used to select 7893 students from 6 to 18 years of age from 14 out of 396 primary and secondary schools in Nanning city.All the students had undergone physical examination and blood tests including the following risk factors related to metabolic syndrome:fasting blood glucose (FBG),total cholesterol (TC),triglycerides (TG),high-density lipoprotein cholesterol (HDL-C),low density lipoprotein cholesterol (LDL-C),alanine amino shift enzyme (ALT),aspartic acid amine shift enzyme (AST) and fasting insulin (FINS).The homeostasis model assessment insulin resistance index (HOMA-IR) was also measured.Results (1) The prevalence rate of MS in normal group was 0.57％.In both the overweight and obesity groups,the prevalence rates of MS were 4.53％ and 26.80％,respectively.(2) These indices in obesity group were higher than other two groups (P＜0.05).The result of overweight group was higher than normal group (P＜0.05).(3) Waist circumference(OR=1.087,95％CI:1.033-1.143 ),SBP ( OR=1.073,95％CI:1.032-1.116),FBG (OR=1.394,95％CI:1.568-3.423),TG (OR=3.213,95％CI:1.410-7.319) and HDL-C (OR=0.001,95％CI:0.000-0.012)were detecting indices which had statistically significant with MS in binary logistic regression analysis.Conclusion Metabolic syndrome and obesity were closely related in children and adolescents while its prevalence and risk factors increased with the severity of obesity.

AIM:To investigate the effect of toosendanin(TSN)on invasion and migration abilities of human ovarian cancer cells and the related mechanism.METHODS:The human ovarian cancer cell lines CAVO-3 and SKVO-3 were treated with TSN at different concentrations.The cell viabilty at 12,24,48,72 and 96 h after TSN treatment was measured by CCK-8 assay.Scratch wound healing assay and Transwell assay were employed to measure the invasion and migration abilities of CAVO-3 cells.The protein expression of nuclear factor-κB(NF-κB)p65,E-cadherin,N-cadherin,vimentin and Snail was determined by Western blot.RESULTS:TSN significantly inhibited the viability of CAVO-3 and SKVO-3 cells(P<0.05 ).Compared with control group ,the migration and invasion abilities of CAVO-3 cells in TSN group decreased significantly(P<0.05).In addition,the expression of NF-κB p65 and E-cadherin protein increased no-tably,followed with N-cadherin,vimentin and Snail protein decreased significantly(P<0.05).However,the inhibitor of NF-κB BAY11-7082 reversed the impact above.Compared with TSN group ,the migration and invasion abilities in TSN +BAY11-7082 group increased significantly(P<0.05).The protein expression of E-cadherin also decreased notably ,fol-lowed with the protein expression of N-cadherin,vimentin and Snail increased significantly(P<0.05).CONCLUSION:TSN inhibits the invasion and migration abilities of human ovarian cancer cells ,which is related to the inhibition of epitheli-al-mesenchymal transition process mediated by NF-κB/Snail signaling pathway.

BACKGROUNDConstruction of replication-deficient recombinant adenovirus expressing gag-pol and env genes of human immunodeficiency virus (HIV) in mice.

METHODSgag-polDelta and gp140TM genes were cloned into shuttle vector pAdTrack-CMV respectively, and then the plasmids containing gag-polDelta or gp140TM gene were cotransformed with the backbone of adenovirus into E.coli BJ5183. Transfections of the recombinants were performed to obtain recombinant adenoviruses. Its immunogenicity was evaluated by testing antibody levels of mice primed with DNA vaccines and boosted with recombinant adenoviruses.

RESULTSThe replication-deficient recombinant adenovirus could express Gp140TM, Gag P55 and P24 proteins correctly. The mice primed with DNA vaccines and boosted with recombinant adenoviruses elicited high titer of HIV-1-specific antibody compared with that inoculated with DNA vaccines only.

CONCLUSIONReplication-deficient recombinant adenovirus expressing gag-polDelta and gp140TM can elicit high titer HIV-1-specific antibodies.

AIDS Vaccines ; immunology ; Adenoviridae ; genetics ; Animals ; Female ; Fusion Proteins, gag-pol ; biosynthesis ; genetics ; Gene Products, env ; biosynthesis ; genetics ; HIV-1 ; genetics ; immunology ; Mice ; Mice, Inbred BALB C ; Recombination, Genetic ; Transfection ; Vaccines, DNA ; immunology ; env Gene Products, Human Immunodeficiency Virus

OBJECTIVETo evaluate the clinical outcomes of patients with acute myocardial infarction (AMI) complicating cardiogenic shock underwent various treatments.

METHODSFrom January, 2002 to May, 2007, 47 AMI patients with cardiogenic shock were treated in our department by optimal medication (dopamine, epinephrine, norepinephrine, etc.), intra-aortic balloon pump (IABP), mechanical ventilation when indicated, percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG). Outcome and factors related to mortality for these patients were analyzed in this retrospective study.

RESULTSBesides optimal medication and IABP in all patients, 31 patients underwent PCI (66.0%), 6 patients received emergency CABG (12.8%). The overall in-hospital mortality rate was 36.2% (17/47), 6 patients (14.9%) died before coronary revascularization and 11 patients (21.3%) died after revascularization. Nine patients died of pump failure and 8 patients died of renal and (or) respiratory failure. Regression analysis showed that acute renal failure (r = 0.734, P = 0.000), acute respiratory failure (r = 0.606, P = 0.000) and diabetes (r = 0.372, P = 0.012) were positively related to in-hospital mortality.

CONCLUSIONDespite improvements in treatment options for AMI patients complicating cardiogenic shock, in-hospital mortality remained high, especially for patients complicating further with acute renal failure and acute respiratory failure.

Adult ; Aged ; Aged, 80 and over ; Cause of Death ; Female ; Humans ; Male ; Middle Aged ; Myocardial Infarction ; complications ; mortality ; therapy ; Prognosis ; Retrospective Studies ; Shock, Cardiogenic ; etiology ; mortality ; therapy ; Treatment Outcome

OBJECTIVETo investigate the effects of electromagnetic radiation on the physiological indices and immune function of operators.

METHODSThe general conditions and electromagnetic radiation awareness rate of 205 operators under electromagnetic radiation were evaluated using a self-designed questionnaire. Physical examination, electrocardiography, and routine urine test were performed in these operators. Peripheral blood was collected from the operators under electromagnetic radiation for blood cell counting and biochemical testing, and their peripheral blood lymphocytes were cultured for determination of chromosomal aberrant frequency and micronucleus frequency. The data from these operators (exposure group) were compared with those of 95 ordinary individuals (control group).

RESULTSThe chief complaint of giddiness, tiredness, dizziness, and amnesia showed significant differences between the exposure group and control group (P < 0.01), and the difference in headache became larger with an increase in working years. The awareness rate of electromagnetic radiation damage was significantly higher in the exposure group than in the control group. The difference in bradycardia was significant between the two groups (P <0.01), and the incidence was higher with longer working years. Significant differences between the two groups were also found in the numbers of individuals with elevated alanine aminotransferase, total bilirubin, and direct bilirubin (P < 0.01), populations with increased lymphocyte ratio and decreased neutrophil ratio (P < 0.01), populations with positive occult blood, urobilinogen, and bilirubin tests, and the number of individuals with increased micronucleus frequency of cultured peripheral blood lymphocytes (P < 0.01). In addition, the exposure group had significantly increased complement C3 and C4 (P < 0.01), significantly increased IgG (P < 0.05), and significantly decreased IgM (P < 0.01), as compared with the control group.

CONCLUSIONElectromagnetic radiation may lead to the changes in physiological indices, genetic effects, and immune function and affect the health and immune function in operators. The adverse effects are increased as the working years increase. So it is important to strengthen occupational protection of operators under electromagnetic radiation.

Adult ; Chromosome Aberrations ; radiation effects ; Electromagnetic Radiation ; Female ; Humans ; Lymphocytes ; radiation effects ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; Young Adult

OBJECTIVETo study the association of alanine aminotransferase (ALT) with overweight or obesity in children.

METHODSA total of 2889 healthy children and 702 overweight or obese children aged from 7 to 18 years who had received a physical examination were enrolled. Height, body weight, waist circumference, and blood pressure were measured, and the biochemical indicators including blood glucose, blood lipids, ALT, and insulin were detected. The insulin resistance index were calculated.

RESULTSThe ALT level was significantly higher in boys than in girls. Along with the increase of BMI, the ALT level increased in the normal, overweight, and obese groups in both boys and girls. ALT was correlated with BMI, waist circumference, triglyceride, and insulin resistance index. Among the overweight or obese children, the boys with the increased ALT level had higher BMI, waist circumference, blood pressure, triglyceride, low density lipoprotein and insulin resistance index than the boys with normal ALT level (P<0.05); the girls with the increased ALT level had higher waist circumference, blood pressure and insulin resistance index and lower high density lipoprotein than the girls with normal ALT level (P<0.05).

CONCLUSIONSALT is correlated with overweight and obesity and metabolic disorders caused by overweight and obesity such as dyslipidemia and insulin resistance.

Adolescent ; Alanine Transaminase ; blood ; Body Mass Index ; Child ; Female ; Humans ; Insulin Resistance ; Male ; Obesity ; enzymology ; Overweight ; enzymology

OBJECTIVETo investigate the prevalence of hypertension and the relationship between hypertension and obesity in children and adolescents aged 6-18 years in Nanning, Guangxi Province, China.

METHODSA stratified cluster random sampling method was adopted in Nanning to select 7 893 children and adolescents aged 6-18 years as research subjects. Questionnaire surveys were conducted, and blood pressure, height, weight, and other indicators of growth and development were measured.

RESULTSAn increasing trend with age for both systolic blood pressure (SBP) and diastolic blood pressure (DBP) was observed. Detection rates of hypertension, high SBP (HSBP) and high DBP (HDBP) were 6.58%, 4.02% and 3.81%, respectively. The detection rates of hypertension and HSBP in boys were significantly higher than in girls (P<0.05). The detection rates of hypertension in normal, overweight and obesity groups were 3.87%, 9.84% and 19.23%, respectively. The obesity group showed the highest detection rates for hypertension, HSBP and HDBP, followed by the overweight group and normal group. Compared with that in the normal group, the odds ratios (95% CI) for hypertension in the overweight and obesity groups were 2.71 (1.69-5.96) and 5.91 (3.46-7.63), respectively. Blood pressure showed a positive correlation with age, height, weight and BMI (P<0.01).

CONCLUSIONSThe present study provides with the current information and characteristics of blood pressure of children and adolescents aged 6-18 years in Nanning, Guangxi. Blood pressure is correlated with gender, age, height, weight and BMI. Obesity is positively correlated with the prevalence of hypertension and the risk of hypertension increases with body weight.

Adolescent ; Body Weight ; Child ; China ; epidemiology ; Humans ; Hypertension ; epidemiology ; Obesity ; epidemiology ; Prevalence ; Sex Characteristics

Interleukin-2 (IL-2) was initially isolated as a T cell growth factor and had been shown to direct the expansion and differentiation of several hematopoietic cell types. Clinical studies using IL-2 in the treatment of AIDS have been encouraging, due to its critical role as a proliferative signal for activated T-lymphocytes. IL-2 has also undergone trials in the treatment of several types of cancer, based on its stimulation of cytotoxic, antitumor cells. Today, human IL-2 is produced completely by genetically engineered method, and it has been proved that genetically engineered recombinant human IL-2 has almost the same function and clinical effect as wild IL-2. In the former study, recombinant human IL-2 usually comes from E. coli, in this paper the mutant IL-2 was successfully expressed and purified in Pichia pastoris for the first time. As a eukaryote, Pichia pastoris has many of the advantages of higher eukaryotic expression systems such as protein processing, protein folding, and posttranslational modification, while being as easy to manipulate as E. coli or Saccharomyces cerevisiae. It is faster, easier, and less expensive to use than other eukaryotic expression systems such as baculovirus or mammalian tissue culture, and generally gives higher expression level. Expression conditions of human mutant interleukin-2(the codon for cysteine-125 of human IL-2 with alanine; the codon for leucine-18 with methionine; the codon for leucine-19 with serine) in the recombinant Pichia pastoris strain were optimized via test of some factors such as the rate of aeration, the inductive duration, the initial pH and the concentration of methanol. The results from tests showed that the most important parameter for efficient expression of interleukin-2 in recombinant Pichia pastoris strain is adequate aeration during methanol induction, and the optimum inductive condition for interleukin-2 expression was: more than 80% aeration, 2 days for induction, the initial pH of 6.0, the final methanol concentration of 1.0%. With this condition, the expressed IL-2 was secreted into fermentation broth and reached a yield of 30%, approximately 200 mg/L. Expressed interleutin-2 (MvIL-2) was isolated and purified by centrifugation, millipore filtration to concentration, Econo-PacS strongly acidic cation exchanger cartridge and molecular sieve chromatography and the yield of MvIL-2 was 27%. MvIL-2 was purified to electrophoretic purity by SDS-PAGE and only one peak being loaded on HPLC. Purified MvIL-2 protein had stimulating activity similar to the wild type of IL-2 as assayed by IL-2-dependent CTLL-2 cells. However, the stability of MvIL-2 was superior than that of IL-2 at different temperatures. The activity of obtained MvIL-2 was 4 - 5 times of the wild type of IL-2, So MvIL-2 had an advantage over wild type of rhIL-2 in storage stability and activity.
Fermentation ; Humans ; Interleukin-2 ; biosynthesis ; genetics ; Mutant Proteins ; biosynthesis ; Mutation ; Pichia ; genetics ; metabolism ; Protein Engineering ; methods ; Recombinant Proteins ; biosynthesis ; genetics ; isolation & purification