Objective To evaluate the performance verification of serum copper detected by Roche Cobas 8000 automatic biochemical analyzer.Methods Referring to CLSI files and other documents,the precision,accuracy,analysis of measuring range and reference interval of serum copper from Roche Cobas 8000 automatic biochemical analyzer were verified.Results The coefficient of variations (CV) of within-run precision with high and low values were 2.96％,2.91％,respectively;CV of the between-run precision with high and low values were 3.07％,2.99％,respectively,which were all less than the CV provided by the manufacturer (10.00％).The bias between detection results and target value were 1.78％ and 1.56％,respectively,which were all within the measurement range of quality assessment.Analysis of measuring range of the detected items was in line with the linear range provided by the specification.The quotative biological reference range conformed to the group of this laboratory services.ConclusionThe main analytic characteristic of serum copper measurement by Roche Cobas 8000 automatic biochemical analyzer is consistent with acceptable quality standards,and the experimental evaluation project of CLSI shows maneuverability and practicability.

Animals ; Apoptosis ; Cardiomegaly ; metabolism ; pathology ; Glycogen Synthase Kinase 3 ; metabolism ; Mice ; Mice, Transgenic ; Myocytes, Cardiac ; cytology

Antigens, CD1 ; metabolism ; Child, Preschool ; Cholangitis, Sclerosing ; diagnosis ; etiology ; metabolism ; Diagnosis, Differential ; Female ; Histiocytosis, Langerhans-Cell ; complications ; metabolism ; pathology ; Humans ; Immunohistochemistry ; Liver ; metabolism ; pathology ; S100 Proteins ; metabolism

Objective To test the effect of hypothermia on Na+/H+ exchange, activated by shrinkage and cytoplasmic acidosis. Method Amiloride-sensitive Na+ influx in guinea pig red cells was traced with isotope 22Na and intracellular Na+ concentration was measured by emission flame photometry. Result Amiloride-sensitive Na+ influx decreased linearly as a function of temperatures (about 37℃) in shrunken cells, but increased in acidified cells. The up-regulation of acid-induced Na+／H+ exchange by elevated temperature was enhanced by hypo-osmolarity. Less sensitivity of intracellular H+ site at 41℃ may be the mechanism for the inhibition of shrinkage-induced Na+/H+ exchange by elevated temperature. Heating-mediated explosive increase in the activity of acid-induced Na+/H+ exchange may be due to enhanced extracellular Na+ sensitivity and lower intracellular pH caused by acidic metabolites. Acid-induced Na+/H+ ewxchange contributes to cytoplasmic Na+ accumulation. Conclusion These two modes of Na+/H+ exchange with different response to elevated temperature may play different roles in the cellular pathogenesis of heatstroke.

Objective To study the influence of laparoscopic gastric surgery on the gut barrier function (GBF).Methods There were 64 gastric cancer patients undergoing respectively laparoscopic radical procedures (32 cases) and open gastric surgery (32 cases).Blood was drawn on day one before surgery,day 1,day 3 and day 7 after the surgery for the measurement of plasma D-lacate and plasma diamine oxidase activity by using ultraviolet spectrophotometry.Results There was no statistical difference among demographic,clinicopathological characterastics between the two groups (P ＞ 0.05).The difference on the operative time,blood loss and the time starting to take food after the surgery was significant between the two groups,P ＜ 0.05.The differences of plasma D-lacate level and the diamine oxidase (DAO) on perioperatively respective all time points were not significant between the two groups,P ＞ 0.05.Conclusion Laparoscopic radical gastrectomy is comparable to open procedures in causing damage to patient's gut barrier functions.

Objective To study the effect and safety on the retention respiratory inhalation general anesthesia in craniocerebral operation.Methods Eighty-six patients undergoing craniocerebral operation were divided into conventional anesthesia group (group A) and retention respiratory anesthesia group (group B) by random digits table method with 43 cases each.Group A was given conventional induction and intubation,administration order:midazolam 0.05 mg/kg,fentanyl 2-4 μ g/kg,cisatracurium 0.2-0.3 mg/kg,propofol 1.0-1.5 mg/kg;group B was given rapid induction and intubation,administration order:midazolam 0.05 mg/kg,fentanyl 2-4 μg/kg,propofol 1.0-1.5 mg/kg,succinylcholine 1.5 mg/kg.The 2 groups after intubation done by Ohmeda 7100 anesthesia machine control respiration,trace pump continuous infusion of propofol and remifentanil,and maintained inhaling isoflurane anesthesia.Group A was discontinuity intravenous injection atracurium.Group B was changed autonomous breathing after the succinylcholine effect disappeared,respiratory frequency according to the regulation of remifentanil infusion rate,the respiration rate remained at 8-12 times/min.The consumption of propofol and remifentanil,additional times of fentanyl,intraoperative airway pressure,partial pressure of carbon dioxide in end expiratory gas (PE TCO2),intraoperative body movement,airway pressure,extubation time,OAA/S score after extubation 15 min and untoward reaction were recorded.Results There were no statistical differences in operation time,intraoperative body movement,intraoperative airway pressure and PETCO2 between the 2 groups (P＞ 0.05).The consumption of propofol and remifentanil,additional times of fentanyl in group B were significantly higher than those in group A [(69.2 ± 13.7) μg/(kg·min) vs.(61.0 ± 8.2)μg/(kg·min),(0.19 ± 0.06) μ g/ (kg· min) vs.(0.15 ± 0.05) μ g/ (kg· min),1.5 times vs.0 time],there were statistical differences (P＜ 0.05).The extubation time in group B was significantly shorter than that in group A [(6.4 ±3.2) min vs.(11.3 ± 4.5) min],the OAA/S score after extubation 15 min in group B was significantly lower than that in group A [1 (1-3) scores vs.2(1-3) scores],there were statistical differences between the 2 groups (P ＜ 0.05).Conclusion Retention respiration intubation general anesthesia patients of craniocerebral operation can early recover,extubation time is significantly shorter,it is a safe and effective anesthesia method.

Objective To study the relationship between blood uric acid(BUA)level and oxidative stress in the elderly. Methods One hundred and eighteen healthy subjects who aged 60years and over were recruited.They were divided into 3 groups according to the serum uric acid level:(1)Control group:BUA 142-416 μmol/L;(2)Hyperuricemia group Ⅰ:BUA 417-470 μmol/L;(3)Hyperuricemia group Ⅱ:BUA＞470 μmol/L.Serum xanthine oxidase(XO)activity,superoxide dismutase(SOD)activity,total antioxidation capacity(TAOC)and peroxide concentration were examined. Results (1)No significant differences in TAOC[control group:(8.40±2.09),Hyperuricemia group Ⅰ:(8.13±1.92)and Hyperuricemia group Ⅱ:(7.95±1.54)U/ml,all P＞O.05)and in SOD activity[control group:(80.57±15.44),Hyperuricemia group Ⅰ:(81.37±11.92)and Hyperuricemia group Ⅱ:(87.45±11.38)U/ml,all P＞0.05)among the 3 groups were found.The serum peroxide level and XO activity were significantly higher in hyperuricemia group Ⅰ and Ⅱ[XO activity:(9.17±1.68) vs.(9.32±1.87)U/ml,all P＜0.05;serum peroxide:(149.5±25.7)vs.(150.7±23.1)μmol/L,all P＜0.05]than in group control[XO activity:(7.81±1.84),serum peroxide:(122.5±33.8)].(2)Multifactorial regression analysis showed TAOC was related to age,triglyceride and uric acid(all P＜0.05),XO activity was related to uric acid(P＜0.05)and peroxide concentration was related to age and uric acid(all P＜0.05). Conclusions This study supports the presence of the xanthine oxidase-related oxidative stress in the elderly with hyperuricemia.

Gaucher Disease ; Humans

Child ; Humans ; Lymphoma, Follicular ; diagnosis ; therapy

Brain ; Dyspepsia ; therapy ; Gastritis ; Humans ; Medicine, Chinese Traditional ; Research Design ; Syndrome