Objective To investigate the feasibility and safety of laparoscopic cholecystectomy(LC) in patients with chronic renal dysfunction at azotaemic stage.Methods Clinical data of 7 patients accompanying chronic renal dysfunction at azotaemic stage treated with LC between May 2004 and September 2006 were analyzed retrospectively.The operation was performed under general anesthesia and endotracheal intubation.The CO2 pressure was maintained at 9～12 mm Hg.The LC was conducted with 3-port technique in 5 patients and 4-port technique in 2.Results The LC was completed smoothly in all the 7 patients.Patients' renal dysfunction was not aggravated.There was no significant difference between pre-and post-operative time in levels of blood urea nitrogen(11.92?4.06 mmol/L vs 12.16?3.76 mmol/L;t=0.50,P=0.633) and blood creatinine(208.62?134.37 ?mol/L vs 204.20?125.53 ?mol/L;t= 0.51,P=0.626).As compared with preoperative levels,the creatinine clearance rates were not significantly changed at 2 weeks after operation in 3 patients(40.03 ml/min vs 45.61 ml/min;32.28 ml/min vs 38.93 ml/min;56.72 ml/min vs 51.60 ml/min).Follow-up checkups for 4～20 months(mean,10 months) showed no aggravation of renal dysfunction.Conclusions Laparoscopic cholecystectomy is a feasible and safe procedure for patients with chronic renal dysfunction at azotaemic stage.

Objective To investigate the diagnosis value of laparosco-pie examination in ascites.Methods The data of twenty-three cases with ascites of unknown origin undergoing laparescopie examination and pathologic examination were retrospectively analyzed from May 2004 to August 2008.Results Twenty-two eases were definitely diagnosed by laparoscopie exploration,the positive rate was 95.6%.One ease re-mained unknown.Among them,18 eases were tuberculous peritonitis; 3 eases were metastatic adenocarcino-ma; one ease was peritoneal mesothelioma.No obvious postoperative complications occurred.Conclusion Laparoscopie examination is a safe method with hige definite diagnostic rate,which has important values in diagnosis of ascites of unknown origin.

Adult ; Cryptococcosis ; physiopathology ; Cryptococcus neoformans ; Duodenal Diseases ; microbiology ; physiopathology ; Humans ; Male

To study the changes in every part of the beta-adrenergic signal transduction pathway and their effects on ischemic preconditioning of rat myocardium in vivo. SD rats were divided into three groups: IP group, I/R group and CON group. The IP group was further divided into PC1-, 2-, 3-, and PC1+, 2+, 3+ groups according to preconditioning procedure. The rats received surgical procedure and underwent left coronary artery occlusion and reperfusion. We analyzed the infarct size by TTC staining, measured serum myocardial enzymes, studied the beta-AR Bmax and Kd by radioligand binding assay of receptors, checked the activity of AC and PKA by the method of biochemistry and examined the content of cAMP by radioimmunoassay. The infarct area was much smaller in the IP group than in the I/R group (P < 0.001), while the enzymes were significantly higher in I/R (P < 0.001). The Bmax of beta-AR in IP was much higher than that in I/R (P < 0. 001), but no difference in Kd could be seen between IP and I/R groups. In IP, the activity of AC and PKA and the content of cAMP were higher than those in I/R (P < 0.05, 0.002 and 0.001, respectively). In the procedure of preconditioning, the content of cAMP and the activity of PKA showed the characteristic of cyclic fluctuation. Ischemic preconditioning can protect the heart from necrosis and reduce endo-enzyme leakage. The system of beta-adrenergic signal transduction pathway probably takes part in the protection effect of the IP, which might be elicited by the PKA.
Ischemic Preconditioning, Myocardial ; Myocardium/*metabolism ; Rats, Sprague-Dawley ; Receptors, Adrenergic, beta/*physiology ; Signal Transduction

Objective To study the feasibility of laparoscopic cholecystectomy accompanied by simultaneous umbilical hernia repair.Methods Twenty-four adult patients received laparoscopic cholecystectomy accompanied by simultaneous umbilical hernia repair in our hospital from November 2003 to April 2008.An incision was made in navel defect and entered the abdominal cavity under a direct vision.LC was performed by 3-trocar technique.Umbilical hernia was repaired by Mayo' style.Results The operation was successfully completed in all the cases.The operation time ranged from 35 to 65 minutes (mean,48 minutes),the blood loss was 5-30 ml(mean,16 ml),and hospital stay after the operation was 3 -4 days.No patient dereloped wound infection or skin necrosis.No recurreme was found during a 1-to 54-month follow-up(mean,28.6 months).Conclusions Laparoscopie cholecystectomy accompanied by simultaneous umbilical hernia repair is a safe and effective procedure.Mayo repair is simple and effective for umbilical hernia with less fascial defects.

Objective To explore the correlation of single nucleotide polymorphism ( SNP ) in Nrf2 gene with acute mountain sickness ( AMS) among Han populations in China .Methods As a nested case-control study , 603 Chinese Han young men who had been quickly exposed to 3700 m were adopted and divided into case group and control group ( 369 vs 234,respectively) by Lake Louise Self-assessment Scoring System(LLSS).The Sequenom Mass Array system was used to detect the SNPs of rs10497511 and rs2364722 in Nrf2 gene.Results Alleles of rs10497511 and rs2364722 were respec-tively detected in both case and control groups , which were T-C and A-G.Statistically significant difference was not found in allele frequencies ( P>0.05 ) .Further analysis showed that there was still no significant difference between the codomi -nant, dominant and recessive genotype models (P>0.05).Conclusion rs10497511 and rs2364722 of Nrf2 gene may not be related to susceptibility to AMS in Chinese Han populations .

To investigate a new kind of tumor tracer 99mTc-YIGSR developed from a five amino structure (YIGSR) of the Laminin -chain, which can bind to the laminin receptors of tumor specifically, and radiolabeled with MAG3. (1) Preparation of the 99mTc-YIGSR probe: with S-Acetly-NH3-MAG3 as the chelator and with proper reductants YIGSR was labeled with 99mTc; (2) Cell culture and viability measurement: EAC was maintained in RPMI 1640 supplemented with calf serum; the trypan blue exclusion was applied to calculate the cell viability; (3) Study of the cell dynamic: The EAC's uptake of 99mTc-YIGSR and 99mTc-MIBI was observed at 37 degrees C and 22 degrees C, respectively. (1) The labeling efficiencies of 99mTc-YIGSR and 99mTc-MIBI were (62 +/- 3)% and (96 +/- 2)%, respectively; (2) The cell viability was declined with time of incubation; (3) At 37 degrees C, the EAC'S uptake of 99mTc-YIGSR and 99mTc-MIBI reached the peak of (43.16 +/- 2.4) % and (24.4 +/- 1.8) % at 60 min, respectively; and at 22 degrees C, the highest uptake was (26.5 +/- 2.1) % and (9.47 +/- 1.9) % at 60 min, respectively. The in vitro study suggests that 99mTc-YIGSR is superior to 99mTc-MIBI in cell uptake and has potential value in tumor imaging.
Carcinoma, Ehrlich Tumor/*radionuclide imaging ; Laminin ; Oligopeptides ; Radiopharmaceuticals/diagnostic use ; Radiopharmaceuticals/*pharmacokinetics ; Technetium Tc 99m Mertiatide/diagnostic use ; Technetium Tc 99m Mertiatide/*pharmacokinetics ; Technetium Tc 99m Sestamibi/diagnostic use ; Technetium Tc 99m Sestamibi/*pharmacokinetics ; Tissue Distribution

The effect of acute ischemia on the electrophysiological characteristics of the three layers myocardium of canine in vivo was investigated. Twelve canines were divided into two groups randomly: acute ischemia (AI) group and sham operation (SO) group. By using the monophasic action potential (MAP) technique, MAP and effective refractory period (ERP) of the three layers myocardium were measured by specially designed plunge needle electrodes and the transmural dispersion of repolarization (TDR) and transmural dispersion of ERP (TDE) were analyzed. The results showed that in the AI group, MAP duration (MAPD) was shortened from 201.67 +/- 21.42 ms to 169.50 +/- 13.81 ms (P < 0.05), but ERP prolonged to varying degrees and TDE increased during ischemia. In the SO group, MAPD and ERP did not change almost. Among of the three layers myocardium of canine, MAPD was coincident in two groups. It was concluded that during acute ischemia, MAPD was shortened sharply, but there was no significant difference among of the three layers myocardium. The prolonged ERP was concomitant with increased TDE during acute ischemia, which may play an important role in the occurrence of arrhythmias induced by acute ischemia. These findings may have important implications in arrhythmogenesis.
Action Potentials/*physiology ; Electrodes ; Heart/physiopathology ; Myocardial Ischemia/*physiopathology ; Myocardium/*metabolism ; Random Allocation ; Refractory Period, Electrophysiological/*physiology

OBJECTIVE:To study the affinity of penehyclidine optical isomers to muscarinic(M)receptor subtypes,and pro-vide reference for revealing the action targets and efficacy selectivity of penehyclidine. METHODS:Homology modeling,molecu-lar docking and other molecular simulation technologies were used to analyze and predict the binding energy of 4 optical isomers to M receptor subtypes and judge its affinity by comparing the binding energy of different optical isomers R1 (3R,2′R),R2 (3R, 2′S),S1(3S,2′R),S2(3S,2′S)with M receptor subtypes M1-M5. RESULTS:All the 4 optical isomers can dock into the ac-tive sites of M receptor subtypes,and different optical isomers showed great differences in the molecular docking with different M receptor subtypes. Penehyclidine isomers showed larger binding energy to M3,the binding energy of 4 optical isomers ranged in 5736.519-5907.143 kcal/mol. The binding energy of R1 to M1 was 1190.041 kcal/mol;while those of other optical isomers to each receptor subtype were lower or negative. CONCLUSIONS:R1 shows the affinity to M1 receptor. And all the 4 optical isomer show the affinity to M3.

Acute Disease ; Adenoviridae Infections ; epidemiology ; Adolescent ; Child ; Child, Preschool ; China ; epidemiology ; Humans ; Infant ; Infant, Newborn ; Respiratory Tract Infections ; epidemiology ; virology