Alzheimer Disease ; drug therapy ; genetics ; prevention & control ; Amyloid beta-Peptides ; genetics ; Animals ; Disease Models, Animal ; Mice ; Mice, Transgenic ; Phytotherapy ; Presenilin-1 ; genetics

Objective To explore the protective effect of co-treatment with antioxidants 4-hydroxy-2,2,6,6-tetra-methylpiperidine 1-oxyl (TEMPOL) and reduced glutathione (GSH) in pancreatic injury induced by intermittent hypoxia (IH) in mice. Methods Fifty male C57BL/6J mice were randomly divided into control group(CON), IH group (IH), IH+TEM-POL group (IH+TEMPOL), IH+GSH group (IH+GSH) and IH+TEMPOL+GSH group (IH+TEMPOL+GSH). After successful-ly prepared animal model, the insulin resistance (IR) level, pancreatic malondialdehyde (MDA) level,superoxide dismutase (SOD) activity,glutathione reductase (GR) concentration and pancreatic β-cell apoptosis were detected in five groups. Re-sults The blood glucose level was significantly increased in IH group than that in CON group (P<0.01), but which was sig-nificantly decreased in IH+TEMPOL+GSH group than that of IH group (P<0.01). The MDA content was significantly higher in the IH group than that in CON group (4.48±0.25 vs 1.94±0.21, P<0.01), but SOD activity and GR content were signifi-cantly lower in IH group than those of CON group (61.52±3.33 vs 100.05± 7.26,107.81±7.54 vs 170.54±4.90,P<0.01). The level of MDA was significantly lower in IH+TEMPOL+GSH group (2.07±0.35) than that in IH group. The levels of SOD and GR were significantly higher in IH+TEMPOL+GSH group (96.68±5.85 and 166.87±5.75) than those of IH group (P<0.01). The apoptotic rate of pancreaticβcells was significantly increased in IH group than that in CON group (2.43±0.07 vs 0.54± 0.06, P<0.01), but it was significantly lower in IH+TEMPOL+GSH group (0.56 ± 0.06) than that in IH group (P<0.01). There were no significantly differences in all above indexes between IH group, IH+TEMPOL group and IH+GSH group ( P>0.05). Conclusion The co-treatment with the antioxidant TEMPOL and GSH can obviously protect IH-induced pancreatic injury in mice. However, there was no significant protective effect of TEMPOL or GSH alone on pancreatic injury.

Objective To explore the clinical value of urethral dilation in treatment of female bladder outlet obstruction. Methods Thirty-five female bladder outlet obstruction patients were selected, and all the patients failed for more than 1 month inαreceptor blocker treatment. The patients underwent urethral dilation under local anaesthesia, once a week, for a total of 12 times. The international prostate symptom score (IPSS), quality of life score (QOL) and residual urine volume before and after treatment were examined. Results The IPSS, QOL and residual urine volume after treatment were significantly lower than those before treatment: (10.23 ± 6.31) scores vs. (21.41 ± 3.71) scores, (2.31 ± 0.65) scores vs. (5.43 ± 0.60) scores and (20.73 ± 10.59) ml vs. (85.23 ± 12.15) ml, and there were statistical differences (P<0.01). Conclusions The urethral dilation is one of the effective treatments for female bladder outlet obstruction patients who fail in αreceptor blocker treatment. It can make a part of patients avoid invasive examination and surgery, and it is worth to be popularized in clinic and primary hospital.

AIM: To observe the efficacy of ondansetron by intravenous injection at different time in preventing nausea and vomiting after pediatric strabismus surgery.METHODS: Totally 90 children aged 3 - 11y were randomly selected for pediatric strabismus surgery from June 2013 to August 2013 in our hospital. The ASA grade of all children were Ⅰ - II. Children were randomly divided into three groups with 30 cases each. Group A received intravenous drip of ondansetron 0. 1mg/kg before surgery. Group B received intravenous drip of ondansetron 0. 1mg/kg after surgery. Group C as control group was not given ondansetron. The number and severity of nausea and vomiting were observed within 24h after surgery.
RESULTS: There were no statistical significance in patients' gender, weight, age, duration of anesthesia, ketamine dosage and vital signs intraoperative between the three groups ( P > 0. 05 ). The incidence rate of postoperative nausea and vomiting ( PONV) of group A and B were significantly lower than group C (P<0. 05). The incidence rate of PONV of group A and group B have no significant difference (P>0. 05).
CONCLUSION:Using ondansetron is effective and safe in preventing PONV before and at the end of the pediatric strabismus surgery, which can also improve safety and be lower cost. It is a worthy promoting antiemetic approach for eye surgery.

Efforts on directed evolution of sortase A to optimize its catalytic properties have been undertaken and shown the promise. To facilitate screening of sortase A mutants with expected catalytic properties, a novel ligation efficiency monitoring system, including reporter substrates GFP-LPETG and GGGYK-Biotin, was developed. GFP-LPETG, wild type sortase A, and a recently reported high activity sortase A mutant were prepared recombinantly from Escherichia coli BL21 (DE3). Taking advantage of the newly designed reporter system, the ligation efficiency catalyzed by wild type and mutant form of sortase A could be sensitively monitored via SDS-PAGE directly. Consistent with previous report, the mutant sortase A displayed much higher catalytic activity compared to wild type enzyme, indicating the new reporter system is easily and fast handled and sensitive. The application of this reporter system into systemic screening will facilitate future directed optimization of sortase A.
Aminoacyltransferases ; genetics ; metabolism ; Bacterial Proteins ; genetics ; metabolism ; Biocatalysis ; Biotin ; Cysteine Endopeptidases ; genetics ; metabolism ; Electrophoresis, Polyacrylamide Gel ; Escherichia coli ; Genes, Reporter ; Ligation ; Mutant Proteins ; genetics ; metabolism

0.05).Conclusions RFA treatment of PHC patients does not lead to hematogenous tumor dissemination.

Alzheimer Disease ; drug therapy ; enzymology ; Amyloid Precursor Protein Secretases ; antagonists & inhibitors ; Animals ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Medicine, Chinese Traditional ; methods ; Membrane Glycoproteins ; antagonists & inhibitors ; Molecular Targeted Therapy ; Phytotherapy ; methods ; Presenilins ; antagonists & inhibitors

Objective To investigate the changes in cerebral oxygen metabolism during liver transplantation in patients with liver cirrhoses.Methods Sixteen ASAⅢorⅣpatients with liver cirrhoses(14 male,2 female)aged 25-67 yrs,weighing 45-80 kg undergoing liver transplantation were studied.Radial artery was cannulated for direct BP monitoring and blood sampling.Swan-Ganz catheter was placed in pulmonary artery (PA)via right internal jugular vein(IJV)for cardiac output(CO)monitoring and sampling mixed venous blood. Left IJV was cannulated and the catheter was advanced cephalad until jugular bulb for blood sampling.Anesthesia was induced with midazolam,fentanyl,propefol and vecuronium and maintained with isoflurane inhalation and intermittentⅣboluses of fentanyl and vecuronium.The patients were mechanically ventilated after tracheal intubation.PaCO_2 was maintained between 30-45 mm Hg.Blood samples were taken from radial artery,pulmonary artery and jugular bulb simultaneously for blood gas analysis before operation(T_0,baseline),10 min before anhepatic phase(T_1)20 min after onset of anhepatic phase(T_2),30 min after graft reperfusion(T_3)and at the end of operation(T_4).Oxygen delivery(DO_2),oxygen consumption(VO_2),oxygen content of jugular bulb blood (CjvO_2),cerebral arterial-venous oxygen content differences(Ca-jvO_2)cerebral oxygen extraction ratio(CERO_2) and CBF/CMRO_2 were calculated.Results The mean duration of operation was(364?51)min and the mean intraoperative blood loss was(1340?430)ml.CO was significantly increased before anhepatic phase(T_1), during neohepatic phase(T_3)and at the end of operation(T_4)but decreased during anhepatc phase(T_2)as compared with the baseline value at T_0.Hb,CaO_2,Ca-jvO_2 and CERO_2 were all decreased while SjvO_2 and CBF/ CMRO_2 were increased during operation;DO_2,VO_2 and CjvO_2 were decreased during anhepatic phase;DO_2 was increased during other phases;VO_2 was increased at the end of operation as compared with the baseline(T_0)(P＜0.05 or 0.01).Conclusion There is no cerebral oxygen deficiency during liver transplantation in patients with liver cirrhoses.

AIM: To determine the effect of suction duration on thickness and diameter of corneal flap created by microkeratome in porcine eyes in laser in situ kerato-mileusis (LASIK).METHODS: Sixty porcine eyes were randomly assigned to three groups according to different suction durations: group 1 (10 seconds), group 2 (20 seconds), and group 3 (30 seconds). A Moria M2 microkeratome (Moria, France) with a 160μm head was used to create a corneal flap. Corneal flap thickness was measured by automated ultrasonic pachymetry, and the flap diameter was measured by a vernier caliper.RESULTS: The flap thickness of group 1, group 2 and group 3 was 146.05±13.46μm, 157.35±18.95μm and 169.25±21.02μm, respectively. There was a statistically significant difference among three groups (P=0.001). The mean flap diameter in groups 1, 2 and 3 was 8.63±0.19mm, 8.89±0.24mm and 9.06±0.18mm, respectively. A statisti-cally significant difference was found among groups (P<0.01).CONCLUSION: In LASIK in porcine eyes, an increase in suction duration resulted in a thicker and greater flap.

AIM: To observe the morphologic changes of of filtration blebs after trichostatin A treatment in an experimental glaucoma filtration surgery ( GFS) .
METHODS:Subconjunctival injection TSA, mitomycin C ( MMC) and PBS during the filtering surgery in rabbits. The morphologic changes of filtration blebs were evaluated by Krofeld score method postoperatively days 3, 7, 14, 21, and 28.
RESULTS: TSA induced filteation bleds were elevated diffusely within 14d and cystic blebs formed 28d, filtration bleb score was significantly higher in TSA group than that in PBS group.
CONCLUSION: TSA can keep the aqueous humor outflow by inhibiting scar formation and prolong the existence of the filtration bleb.