Objective To explore the prenatal genetic diagnosis for classic phenylketonuria (PKU) families.Methods Probands and their family members from three classic PKU families were analyzed by combining linkage analysis through short tandem repeats (STR) polymorphism and PCR-sequencing for the exons within mutation hot spot of phenylalanine hydroxylase gene.Results Linkage analysis found uninformative for Family 1,while 100 % confirmative information was obtained from Family 2 and 3.Sequencing showed compound heterozygous mutations of phenylalanine hydroxylase gene for all of the three probands.Five mutations were detected,namely Y166X,R243Q,R413P,EX6-96A ＞ G and IVS11-1G＞ C,and IVS11-1G ＞ C was a novel identified muntation.Information from linkage analysis and mutation screening showed clearly that the fetus of Family 1 and 2 were affected,while normal for Family 3.Conclusions For those PKU families,reliable service of prenatal genetic diagnosis could be provided by combining linkage analysis with mutation screening of phenylalanine hydroxylase gene.

Objective To investigate the optimal time to remove the urinary catheter in patients undergoing laparoscopic adrenalectomy. MethodsPatients undergoing laparoscopic adrenalectomy were assigned to group A (6 h), group B ( 12 h), group C ( normal control group) with 20 cases in each. Subject feeling, adverse reactions, postoperative bed time and days of absolute diet were compared. Results The incidence of bacteriuria in group A (35％) and B (30％) were significantly lower than that of group C (85％)(F=14. 80, P =0. 000). The incidence of hematouria in group A (25％) and B (10％) were also significantly lower than that of group C ( 80％ ) ( F =22. 98, P =0. 000). Conclusions 6 - 12 hours after laparoscopic adrenalectomy are the optimal time to remove the catheter. In this manner, it can reduce the incidence of bacteriuria and hematouria, promote the postoperative recovery, thus to reduce the cost of hospitalization and improve the nursing work efficiency.

Objective To explore the role and clinical significance of interleukin-6(IL-6) in children with bronchial asthma.Methods Sera were collected from 29 cases with asthmatic attacks,32 asthmatic children who in stable conditions,and 20 health children.Serum IL-6 concentrations were measured by radioimmunoassay(RIA).Results 1.Asthmatic children appeared significantly higher levels of serum IL-6 during asthmatic attacks as compared to those in stable conditions and healthy ones respectively(P3 years old had significantly higher serum IL6 concentrations than ≤3 years old children in remission.Conclusion IL-6 may participate pathogenesis of asthma,and it may play different biological roles during asthmatic attacksas or stable conditions.

Objective To explore the roles of clara cell secretory protein(CCSP)and eosinophil cationic protein(ECP)in the pathoge-nesis of bronchial asthma and to evaluate their diagnostic value in asthmatic children.Methods Induced sputum samples were obtained from 31 asthmatic children during chronic persistent period and clinical remission period.According to global initiative for asthma(GINA),the total of 31 cases accepted systemic treatment by inhaling glucocorticoid.The patients included 18 boys and 13 girls aged from 3.7 to 12.0 years,and their average age was 7.6 years.Sputum CCSP concentrations were measured by enzyme-linked immunosorbent assay(ELISA).And the concentrations of sputum ECP were determined with Pharmacia UniCAP system.Results Asthmatic children had significantly lower CCSP levels in sputum during chronic persistent period compared with clinical remission period(P

Objective To explore roles of total immunoglobulin E(IgE),interleukin-13(IL-13) in asthmatic children,and relation-ship between IgE,IL-13 levels in serum and those in induced sputum.Methods Twenty-six children with asthma who were in chronic persistent period and 20 healthy children were enrolled.Serum and hypertonic saline-induced sputum were obtained in asthmatic children,and serum alone were obtained in control subjects.The levels of IgE were deteced in serum and induced sputum by Pharmacia UniCAP system,and levels of IL-13 were measured by enzyme linked immunosorbent assay(ELISA).Results Asthmatic children had significantly higher serum of IgE and IL-13 levels than those of healthy control group(P0.05).There was positive correlation of IL-13 in serum and induced sputum(r=0.432 P

Objective To study the feasibility of TNF-α promoting migration of rat mesenchymal stem cells (MSCs) to local damaged tissues. Methods The MSCs was exposed to TNF-α at different concentrations and the expression rate of surface adheslon molecules and specific markers as well as their adhesion to endothelial cells were detected.Based on the above steps,the MSCs stimulated with the optimal concentration of TNF-α were obtained and were injected intravenously to the rats whose hindlimbs experienced ischemia damage.The rats were executed for achieving the muscle samples in the ischemic area,which were made into frozen section to count the number of MSCs. Results ( 1 ) Twenty-four hours after the TNF-o stimulation,the expression of adhesion molecule (VCAM-1) of MSCs increased in a concentration-dependent manner,while the expression of adhesion molecules (ICAM-1,L-Selectin and VLA4) of MSCs showed no significant changes.Besides,the expression rate of specific markers of MSCs was also obscure.(2) Exposed to 10 ng/ml TNF-o,MSCs presented an obviously increased ability in adhesion to the endothelial cells.(3) MSCs stimulated with 10 ng/ml TNF-α showed a larger number in the ischemia-damaged tissue of rat hindlimbs than that in the control group. Conclusion TNF-α at concentration of 10 ng/ml is effective within a short term in increasing VCAM-1 expression in rat MSCs and promoting the adhesion of MSCs to endothelial cells without affecting their character.

Objective To approach the clinical significance of Clara cell secretary protein(CCSP) in bronchial asthmatic children. Methods Serum were collected from 50 cases during asthmatic attacks, 22 asthmatic children who were in stable conditions, and 20 healthy children. Serum CCSP concentrations were measured by a human CCSP enzyme- linked immunosorbent assay (ELISA). Results Asthmatic children had significantly lower levels of CCSP in serum during asthmatic attacks(P

Objective To explore the role of Clara cell secretory protein(CCSP) in asthmatic children and compare the levels of CCSP in sera and induced sputum.Methods Thirty-four children with asthma who were in remission and 25 healthy controls were enrolled.Sera and hypertonic saline-induced sputum were obtained in asthmatic children,and sera alone were obtained in control subjects.The le-(vels) of CCSP were measured in sera and induced sputum by enzyme linked immunosorbent assay.Results Asthmatic children,compared with controls,had significantly lower concentration of CCSP in sera(P

Objective To investigate the effect induced by specific inducible nitric oxide synthase (iNOS) inhibitor 1 400 W on nasopharyngeal carcinoma CNE-2 cells lines and its mechanism.Methods CNE-2 cells were treated by different concentrations of 1 400 W,diamminedichloroplatinum (DDP),and both chemicals.Cell counting kit-8 (CCK-8) was used to examine the viability of cells.Quantitative realtime polymerase chain reaction (qRT-PCR) was applied to detect the iNOS mRNA expression.Results The expression of iNOS mRNA was down-regulated by 1400W and was positively correlated with inhibitionrate of cell proliferation.1 400 W inhibits proliferation of CNE-2 cell in a concentration-dependent manner.The proliferation inhibition rate of CNE-2 cells treated by 1 400 W combined with DDP was not enhanced.Conclusions Specific inducible nitric oxide synthase inhibitor 1 400 W can exerts anti-tumor effect though inhibiting the expression of iNOS mRNA;The mechanism of chemosensitization induced by iNOS inhibitor on CNE-2 cells may be closely related level of down-regulation of iNOS expression.

OBJECTIVE To study the isolation and resistance tendency of Acinetobacter calcoaceticus-baumannii to antimicrobial agents from 1998 to 2004 to provide valuable data for infection prevention and therapy. METHODS We reviewed the isolation rates,distribution in clinical specimens and wards,and the resistance rates of(A.calcoaceticus-baumannii)to 14 kinds of antimicrobial agents from 1998 to 2004. RESULTS There was an increasing tendency of isolation rates of A.calcoaceticus-baumannii every year,which was 0.18% in 1998 but 1.48% in 2004.In the seven years,there was the highest isolation rate of 70.58% in specimens from respiratory tract,the next was from the urine(9.42%),and blood(4.63%).Concerning the wards distribution,ICU had the highest rate of 47.28%.In 1998,A.calcoaceticus-baumannii had resistance rates more than 50% only to one kind of antimicrobial agents(aztreonam),but in 2004,it had increased to thirteen kinds(except cefoperazone/sulbactam).About the fourteen kinds of antimicrobial agents we inspected,that were increased in their resistance rate.The highest increasing of resistance rate was ceftazidime from 11.1% in 1998 to 88.9% in 2004,the imipenem was second for 0.0% to 64.8%,and the third was sulfamethoxazole/trimethoprim form 0.0% to 64.0%,while there still was an increasing resistance tendency to them. CONCLUSIONS The clinical isolation rate of A.calcoaceticus-baumannii is increasing,and it has higher resistance rates to many antimicrobial agents as well as an increasing resistance tendency to relatively susceptive antimicrobial agents every year.So physicians should prescribe on the basis of antimicrobial agents susceptibility tests in vitro.