Cardiomyopathy, Dilated ; complications ; drug therapy ; Female ; Humans ; Mesenteric Artery, Superior ; drug effects ; physiopathology ; Mesenteric Vascular Occlusion ; complications ; drug therapy ; Middle Aged ; Thrombolytic Therapy ; Treatment Outcome

Objective To evaluate the feasibility and safety of using continuous spinal anesthesia (CSA) in high risk elderly patients undergoing lower abdominal or lower extremity surgery. Methods Sixty-four ASA III or IV patients aged 70-101 yr weighing 38-55 kg undergoing lower abdominal or lower extremity surgery were randomized to receive epidural anesthesia (EA) (n = 32) or CSA ( n = 32). The patients were complicated with cerebral embolism and/or hypertension, coronary artery disease and/or COPD and/or diabetes mellitus. The patients were unpremedicated. EA was performed at I2.3 or L1.2. A test dose of 2 ml of 2% lidocaine was given. When no signs of spinal block was observed, 1 % ropivacaine was given in small increments until the block height reached T6-8 . CSA was performed at L3,4 using Spinocath (B. Braun). A 2-cm catheter segment was left in subarachnoid space. 0.5% bupivacaine was given in 0.5 ml increments every 3 min until satisfactory block level was reached. The onset time of anesthesia was recorded. The degree of motor block was assessed using modified Bromage scale. Arterial blood samples were obtained before anesthesia (T0 , baseline), when satisfactory block level was reached ( T1), 1 h after skin incision (T2) and at the end of operation (T3) for determination of lactate concentration. The amount of ephedrine and innovar ( droperidol-fentanyl mixture) used during operation and the recovery of motor function of lower extremities were also recorded. Results The demographic data including sex, age, height, body weight, ASA physical status and types of operation were not significantly different between the two groups. BP and HR were significantly decreased after anesthesia as compared to the baseline values at T0 in group EA, whereas in CSA group there were no significant changes in BP and HR after anesthesia. Significantly more patients received ephedrine in EA group (98% ) than in CSA group (15%) and the mean dose of ephedrine was significantly higher in EA group [(34.5?3.1) mg] than in CSA group [(4.3?0.5) mg ]. The onset of block was significantly faster in CSA group than in EA group. Motor blockade was less intense in EA group as assessed by modified Bromage scale. Analgesia was more satisfactory in CSA group and less patients received innovar during operation in CSA group (20% ) than in EA group (51% ). The recovery of motor function of lower extremities was faster in CSA group than in EA group. Blood lactate was significantly higher at T1 , T2 , T3 in EA group than in CSA group. No late complications related to CSA was observed. Conclusion CSA is safe and effective and provides better analgesia with better hemodynamic stability and faster onset of block than EA in elderly patients.

Objective To establish a benign esophageal stricture model and observe the effect of 32P radioactive isotopes on benign esophageal stricture scarring with intracavitary irradiation so as to provide experimental evidence for inhibiting scar hyperplasia and preventing esophageal restenosis after endoscopic dilation for benign esophageal stricture.Methods Benign esophageal stricture models were established in 18 healthy adult rabbits by annular incision and anastomosis.Then the rabbits were randomly divided into control group,hormone group and irradiation group,with six rabbits in each group.On day 2 after surgery,we measured inner diameter of the anastomotic stoma;then the control group received saline intervention,the hormone group was given dexamethasone,and the irradiation group was given 32P radioactive isotopes.The rabbits were observed for two weeks for their general condition and weight.After the intervention,we measured inner diameter of the anastomotic stoma.Liver functions (ALT and AST) were tested again before modeling and after intervention.Then the rabbits were put to death and had tissue in the esophageal stricture area removed for pathological examination and esophageal HE staining.We determined hydroxyproline (HYP) content of esophageal tissue around the anastomotic stoma.Restlts Benign esophageal stricture model was established successfully.After 2 weeks,the rabbits' appetite was obviously diminished in control group and relatively poor in hormone group;obviously improved in irradiation group.The rabbits' weight increased in radiation group compared with the other two groups (P＜0.05).The esophageal inner diameter in irradiation group widened obviously compared with the other two groups (P ＜ 0.05).In irradiation group,the number of fibroblasts decreased obviously,collagen fiber and granulation tissue were not obvious;HYP content was lower than that in the other two groups,and was close to that in a normal esophagus (P＞0.05).ALT and AST did not differ before and after intervention in all groups (P＞0.05).Conclusion ① We can establish benign esophageal stricture model successfully through the surgery.② 32Pradioactive isotopes radiation therapy can be used to prevent early scar formation in esophageal benign stricture,and is superior to dexamethasone therapy.

Adolescent ; Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Musculoskeletal Manipulations ; methods ; Shoulder Dislocation ; diagnostic imaging ; therapy ; Tomography, X-Ray Computed ; Treatment Outcome ; Young Adult

Objective To screen human anti-hypoxia-inducible factor (HIF)-1? scFv of lung adenocarcinoma from large phage antibody library and identify the positive clones. Methods Panning of large phage antibody library against lung adenocarcinoma cell line A549 and HIF-1? was conducted respectively to select specific antibodies. E. coli HB2151 was infected to induce the expression of soluble scFv. The binding activity and specificity were tested by ELISA and immunocytochemical assay. The expression and relative molecular weight of the soluble scFv was detected by SDS-PAGE and Western blot analysis. Results After panning,the target scFv was enriched,and ELISA results showed that positive reactions to HIF-1? were detected in 5 of 10 random clones with a positive ratio of 50%. Immunocytochemical analysis showed the specific affinity of the antibodies to A549 cells. The soluble human anti-HIF-1? scFv fragments of lung adenocarcinoma were expressed in E. coli HB2151 and then confirmed by SDS-PAGE. The result of Western blotting showed that the relative molecular weight of the soluble scFv was about 30?103. The binding activity and specificity were confirmed by ELISA. Conclusion Human anti-HIF-1? scFv of lung adenocarcinoma is successfully obtained with large phage antibody library technique.

Objective To study the effects of different hypoxic training modes on the activities of respiratory chain complexes in the brain mitochondria of rats. Methods Forty healthy two-month-old male Wister rats were randomly divided into 5 groups: living low-training low(LoLo), living high-training high(HiHi), living high-training low (HiLo), living low-training high(LoHi), and living high-exercise high-training low(HiHiLo). Rats were forced to complete a 5-week endurance training program. All training sessions were performed at the same relative intensity under normoxic(P=632mmHg, simulating about 1500m altitude) or hypoxic conditions(P=493mmHg, simulating 3500m altitude) for each of the five groups, respectively. Mitochondria were isolated with differential centrifugation. Spectrophotometric analysis was applied to evaluate RCC (Ⅰ- Ⅲ) activities in brain mitochondria. Results Compared with the LoLo, brain RCC activities in C Ⅱ in rats from LoHi significantly decrease(P<0.05). Brain RCC activities in C Ⅲ in rats from HiHi, HiLo and LoHi significantly decrease and from HiHiLo significantly increase (P<0.01). Conclusion These findings suggest that among different altitude training modes, HiHiLo is the superior one in developing function of mitochondria respiratory chain of rat brain tissues.

For promoting the quality evaluation of Gardenia resource,a UPLC method for the determination of 4 compounds (geniposidic acid,geniposide,crocin-1 and crocin-2) in Gardeniae Fructus was established.The UPLC separation was performed on an Waters Acquity UPLC BEH-C18 (2.1 mm× 100 mm,1.7 μm) column eluted with the mobile phases of acetonitrile-0.1％ formic acid solution in a gradient mode at a flow rate of 0.3 mL· min-1.The detection wavelengths were 240 nm and 440 nm,respectively.Under the optimum conditions,the calibration curves of four analysis were linear in the range of 0.0065-0.0096 μg· mL-1,with correlation coefficients more than 0.9995.The limits of detection (LODs) of four analysis were in the range of 0.0386-0.1875 μg· mL-1.As the results of determination of 4 compounds of 12 batches of Gardeniae Fructus showed,there was great differences between the contents of the 4 compounds,the contents of geniposide were 2.44％-6.96％,while the contents of crocin-1 were 1.26％-3.04％.In addition,fingerprints of 12 batches of Gardenia resources were built using ChemPattern software,and analysis and exploration over the detection results of several samples were carried out using multivariate statistical method (similarity analysis,principal component analysis and cluster analysis).The present study provided a reference to value the importance of this method in the quality evaluation and quality control of Gardeniae resources and slices.

Objective:To explore the significance of detecting serum CRP,myocardial enzymes,liver function index in pediatric patients with rotavirus infectious diarrhea.Methods:110 pediatric patients with rotavirus infectious diarrhea and 85 age-matched patients with bacterial infectious diarrhea who were both treated in our hospital from January,2014 to May,2016 were enrolled in the present study.Another 20 healthy patients who had physical examination in our hospital were considered as control group.The differences of serum CRP,IL-6,hs-cTnT,CK,CL-MB,AST,ALT level and the incidence of parenteral injury were compared.Results:The incidence rate of lower respiratory tract infectivity,rash,myocardial damage and hepatic injury in RV group were significantly lower than the bacterial infectious group (P＜0.05),the level of serum CRP,IL-6 in RV group and bacterial infectious group were significantly higher than the control group,and those of RV group were significantly lower than bacterial infectious group (P ＜0.05);the level of hs-cTnT,CK,CL-MB,AST,ALT in RV group were significantly higher than bacterial infectious group and control group (P＜0.05),and those indexes of bacterial infectious group were no significantly differences compared with healthy control (P ＞ 0.05).Conclusion:The combined detection of serum CRP,myocardial enzyme and liver function indexes were of certain significance in the early distinguishing diagnosis of bacterial infectious diarrhea from rotavirus infectious diarrhea.

Objective To investigate the interactive mechanism of dopamine and α-synuclein in SH-SY5Y cells,and to explore their effects on Parkinson's disease (PD).Methods The concentration of exogenous dopamine was definited by MTT method.The effect of exogenous dopamine on the expressions of α-synuclein and caspase-3 active fragments and malondialdehyde (MDA) content were detected by Western blot and commercial kit.Recombinant plasmid of wild-type α-synuclein was transfected into SH-SY5Y cells.Level changes in dopamine concentration,MDA content and expression of caspase-3 active fragment were observed.Furthermore,the effect of GBR12935,an inhibitor of dopamine transporter,on these outcomes were detected.Results Intracellular dopamine concentration was increased by 16 folds in SH-SY5Y cells which were added 300 umol/L exogenous dopamine for 24 hours as compared with blank controls (t=7.32,P＜0.01).Expressions of α-synuclein and caspase-3 active fragments and MDA content were increased in exogenous dopamine treated group as compared with blank controls (t=4.92,17.14,6.55,all P＜0.01).Intracellular dopamine concentration,MDA content and expression of caspase-3 active fragment were increased in SH-SY5Y cells transfected with recombinant plasmid of wild-type α-synuclein as compared with SH-SY5Y cells transfected with empty plasmid (F =32.97.107.80,55.54,all P＜0.01),whlie these increases could be partially inhibited by GBR12935.Conclusions Dopamine promotes the expression of α-synuclein,while over-expressed α-synuclein increases intracellular dopamine concentration,which forms a vicious cycle of cytotoxicity in SH-SY5Y cells.