Neoadjuvant chemotherapy is preoperative chemotherapy.It can minish burthen of tumor,lower the clinical stage,increase resection rate of cancer and improve therapeutic efficacy.Neoadjuvant chemotherapy for gastric cancer,as a relatively latest concept,has been applied in clinic more and more.

Objective To compare the outcomes of two temperature maintenance strategies during radical resection for carcinoma of oesophagus and their effects on postoperative shivering. Methods Thirty ASA Ⅰ-Ⅱ patients undergoing radical resection for carcinoma of oesophagus were randomly assigned to hypothermia group (HT group, patients were not wanned perioperatively, n=10), intraoperative normothermia group (INT group, patients were warmed only intraoperatively, n=10) and perioperative normothermia group(PNT group, patients were warmed before induction of anesthesia and during anesthesia, n=10). The tympanic temperature began to be recorded 20 min before induction of anesthesia at intervals of 10 min. Results There was no significant difference in the decrease velocity of tympanic temperature during the first hour after induction of anesthesia between HT group and INT group, while both were significantly higher than that of PNT group (P<0.05). There was no significant difference in the tympanic temperature within 70 min after induction of anesthesia between HT group and INT group, while both were significantly lower than that of PNT group (P<0.05). The tympanic temperature of HT group continued to decrease 70 min after induction of anesthesia, while that of INT group and PNT group began to increase. There were significant differences in the tympanic temperature 80 min to 180 min after induction of anesthesia among these three groups(P<0.05). The incidences of postoperative shivering were 8, 5 and 2 in HT group, INT group and PNT group, respectively. The scores of thermal comfort scale were 19±10, 41±7 and 51±11 in HT group, INT group and PNT group, respectively, and there were significant differences among these three groups(P<0.05). Conclusion Compared with INT, PNT can more effectively maintain perioperative normothermia, reduce the incidence of shivering and relieve the patients' cold thermal discomfort in radical resection for carcinoma of oesophagus.

Objective To observe the DNA damage in the human lung fibroblasts(HLF)induced by insoluble nickel compounds(Ni3S2 and Ni2O3)and soluble nickel compound(NiSO4),and to study the mechanism of carcinogenesis.Methods The DNA damage of HLF cells treated with different concentrations of Ni3S2,Ni2O3 and NiSO4 were detected with the method of single cell gel electrophoresis(SCGE).Results All of the three kinds of nickel compounds significantly caused DNA damage in HLF cells,the average tail moments of all nickel-treated groups were larger than those in the control group(P

To study the antiarrhythmic effect of the newly developed alpha/beta-blocker TJ0711, a variety of animal models of arrhythmia were induced by CaCl2, ouabain and ischemia/reperfusion. Glass microelectrode technique was used to observe action potentials of right ventricular papillary muscle of guinea pig. The onset time of arrhythmia induced by CaCl2 was significantly prolonged by TJ0711 at 0.75, 1.5 and 3 mg x kg(-1) doses. TJ0711 (1.5 and 3 mg x kg(-1)) can significantly shorten the ventricular tachycardia (VT) and ventricular fibrillation (VF) duration, the incidence of VF and mortality were significantly reduced. On ischemia-reperfusion-induced arrhythmic model, TJ0711 (0.25, 0.5, 1 and 2 mg x kg(-1)) can significantly reduce the ventricular premature contraction (PVC), VT, VF incidence, mortality, arrhythmia score with a dose-dependent manner. At the same time, rats serum lactate dehydrogenase (LDH) and creatine kinase (CK) activities decreased significantly by TJ0711 (1 and 2 mg x kg(-1)). Ouabain could cause arrhythmia in guinea pigs, when TJ0711 (0.375, 0.75, 1.5 and 3 mg x kg(-1)) was given, the doses of ouabain inducing a variety of arrhythmia PVC, VT, VF, cardiac arrest (CA) were significantly increased with a dose-dependent manner. In the TJ0711 0.1-30 micromol x L(-1) concentration range, guinea pig right ventricular papillary muscle action potential RP (rest potential), APA (action potential amplitude) and V(max) (maximum velocity of depolarization) were not significantly affected. APD20, APD50 and APD90 had a shortening trend but no statistical difference with the increase of TJ0711 concentration. TJ0711 has antiarrhythmic effect on the sympathetic nerve excitement and myocardial cell high calcium animal arrhythmia model. Myocardial action potential zero phase conduction velocity and resting membrane potential were not inhibited by TJ0711. APD20, APD50 and APD90 were shortened by TJ0711 at high concentration. Its antiarrhythmic action mechanism may be besides the action of blocking beta1 receptor, may also have a strong selective blocking action on alpha1 receptor and reducing intracellular calcium concentration.
Action Potentials ; drug effects ; Adrenergic alpha-Antagonists ; administration & dosage ; pharmacology ; Adrenergic beta-Antagonists ; administration & dosage ; pharmacology ; Animals ; Anti-Arrhythmia Agents ; administration & dosage ; pharmacology ; Arrhythmias, Cardiac ; blood ; chemically induced ; etiology ; pathology ; physiopathology ; Calcium Chloride ; Creatine Kinase ; blood ; Dose-Response Relationship, Drug ; Female ; Guinea Pigs ; Heart Ventricles ; cytology ; Lactate Dehydrogenases ; blood ; Male ; Myocardial Reperfusion Injury ; complications ; Myocytes, Cardiac ; drug effects ; physiology ; Ouabain ; Papillary Muscles ; cytology ; Phenoxypropanolamines ; administration & dosage ; pharmacology ; Random Allocation ; Rats ; Rats, Sprague-Dawley

OBJECTIVE: To standardize the management on test of hospital preparations to ensure the quality of preparations. METHODS: The Access database and Word application of in Microsoft Office automatic groupware were integrated organically using VBA programming, and the data management system suitable for hospital preparation test was designed. RESULTS: The print files of various primary records and reports related to testing work exhibited beautiful page and uniformed format. Testing data of preparations were included into data base by computer recording, which facilitated data inquiry and data processing related to quality of hospital preparations. CONCLUSION: Due to this system, both the efficiency and quality of hospital preparation test work have been enhanced, which contributes to institutionalization and standardization of hospital preparation work.

Objective To investigate the changes of oxidized low density lipoprotein(oxLDL) and C-reactive protein(CRP) and their correlation in patients with acute coronary syndrome(ACS),and explore their roles in the pathogenesis of ACS. Methods The plasma levels of oxLDL and CRP were measured in 95 patients with ACS and 66 control subjects by ELISA. Results oxLDL and CRP levels were significantly higher in patients with ACS than those in control group(P

Objective To study the efficacy and safety of short segmental pedicle instrumentation via the paraspinal approach for the management of neurologically intact patients with thoracolumbar burst fracture and posterior ligamentous complex injury.Methods From October 2008 to June 2010,70 such patients were treated in our department.They were 44 males and 26 females,with an average age of 33.4 years (range,from 19 to 55 years).They were divided into 2 groups according to 2 different operative methods.In group A,35 patients were treated via the paraspinal approach while 35 patients in group B were treated via the traditional open approach.The 2 approaches were compared in terms of operation time,intraoperative bleeding,postoperative ambulant time,hospital stay,changes in local kyphosis angle (LKA) and vertebral body height (VBH) at preoperation,postoperation and the last follow-up,postoperative complications and accuracy of screw insertion.Results The time for follow-up ranged from 24 to 36 months (mean,29.3 months).The operation time,intraoperative bleeding,postoperative ambulant time and hospital stay in group B were significantly more than in group A(P ＜ 0.05).No implant failure occurred in either group.There was no significant difference in pedicle screw cut-out between the 2 groups [7 (5.0％) versus 6 (4.3％)] (P ＞0.05).The LKA and VBH increased significantly at postoperation and the last follow-up compared with the preoperation in both groups (P ＜ 0.05),but there was no significant difference between the postoperation and the last follow-up (P ＞ 0.05).There were no significant differences between the 2 groups regarding LKA and VBH at preoperation,postoperation and the last follow-up (P ＞ 0.05).Conclusion The paraspinal approach may result in a good and safe clinical outcome in the treatment of thoracolumbar burst fractures with posterior ligamentous complex injury,because it can maintain the fracture reduction effectively and minimize the iatrogenic injury to soft tissues.

Objective: To study the effects of vitamin E and selenium on apoptosis and c-Myc expression in human leukemia cells. Methods: DNA gel electrophoresis and Northern blotting hybridization were used to detect the apoptosis and the expression of c-Myc gene, respectively. Human leukemia cell line HL-60 and K562 were cultured in vitro. Results: The apoptosis of HL-60 and K562 cells were induced after being exposed to vitamin E (100 ?mol/L) and selenium (8 ?mol/L) for 24 hours, respectively. In HL-60 cell line, c-Myc mRNA was down-regulated significantly by vitamin E(100 ?mol/L),but not selenium(8 ?mol/L).In contrast, the expression of c-Myc gene was repressed by selenium(8 ?mol/L) and not by vitamin E(100 ?mol/L) in K562 cell. Conclusion: Our observations suggest that c-Myc down-regulation and induction of apoptosis by selenium and vitamin E are important pathways in repressing leukemia cell proliferation.The results suggest there are different mechanisms of repressing leukemia cell proliferation for selenium and vitamin E.

Objective:To study the effects of vitamin C (VC) on the injury of alveolar macrophages exposed to Ni2O3 in vitro and the expression of inducible nitric oxide synthase (iNOS). Method:The alveolar macrophages were cultured with exposure to Ni2O3 in vitro. Meanwhile,VC with different concentrations (25,50 and 100 ?mol/L) were added to the medium, respectively. The cell activity,nitric oxide(NO),reactive oxygen species (ROS), malondialdehyde (MDA) and activities of SOD, GSH-Px,CAT and iNOS were detected. iNOS mRNA expression was detected by using RT-PCR. Results:VC could decrease mortality and increase survival activity of alveolar macrophages. VC could also decrease ROS,NO and NOS activity,increase SOD,GSH-Px, CAT activities and downregulate the expression of iNOS mRNA. Conclusion:The lipid peroxidation of alveolar macrophage could be induced by Ni2O3. VC could downregulate the expression of iNOS mRNA and reduce the production of ROS and NO through increasing the activity of antioxidative enzymes and antagonize the oxidative damage induced by Ni2O3.

Objective To observe the effect of different calcium concentration peritoneal dialysate on calcium-phosphorus metabohsm in uremia patients under peritoneal dialysis. Methods Forty uremia patients who the first entered peritoneal dialysis were divided into two groups: standard calcium concentration group (20 cases), low calcium concentration group (20 cases). Treated with continuous ambulatory peritoneal dialysis (CAPD), combining with oral calcium carbonate, observing 12 months. Results When the first entering CAPD, serum calcium, phosphorus, calcium-phosphorus product, immunoreactive parathyroid hormone (iPTH) of the two groups had no differences. Hyperphosphatemia, lower iPTH were universal. After 6 months' treatment, hypercalcemia and hyperphosphatemia in standard calcium concentration group got increasingly serious.While in low calcium concentration group, serum calcium, phosphorus, calcium-phosphorus product all decreased significantly, moreover, they were also lower than post-treatment standard calcium concentration group(P<0.01). In the following 6 months, in low calcium concentration group,serum calcium, calcium-phosphorus product maintained at the normal level serum phosphorus also decreased to the normal level iPTH maintained about 150 ng/L. During the treatment, all patients had no hypotension and hyperspasmia. Conclusion Low calcium concentration peritoneal dialysate can ameliorate disorder of calcium-phosphorus metabohsm, delay the appearance of its comphcations.