Abstract?AlM: To evaluate the difference of contrast sensitivity ( CS) in photopic and scotopic environments in eyes with myopia and myopic astigmatism operated with femtosecond laser in situ keratomileusis ( femto-LASlK ) and laser in situ keratomileusis ( LASlK) .?METHODS: ln a prospective study 160 myopia and myopic astigmatism patients' eyes were involved, which accepted femto- LASlK or LASlK in our hospital from January 2010 to February 2012. The myopia degree was -1. 50 ~ -10. 00D, the astigmatism degree ≤-6. 0D. Eighty eyes were treated with femto-LASlK in group A, and 80 eyes were treated with LASlK in group B, All patients in the treatment group completed the final 6mo of follow-up. The uncorrected visual acuity ( UCVA) and the best spectacle-corrected visual acuity ( BSCVA) , objective and manifest refractions, results of slit-lamp examination, the side effects, intraocular pressure, corneal topography, CS in photopic and scotopic environments were noted.? RESULTS: All of operations on 160 cases were successful without severe complication after 6 mo follow-up. CS of femto-LASlK group ( group A) at each spatial frequency environment were higher than that of LASlK group (group B). ln group A, after 1mo the photopic CS, after 3mo of scotopic CS recovered to the preoperative level, 6mo after surgery improved than before the operation. ln group B, after 3mo photopic CS to the preoperative level, scotopic CS at 6mo after operation was still not recovered to the preoperative level.?CONCLUSlON:Femto-LASlK for correction of myopia and myopic astigmatism, in improving the postoperative contrast sensitivity under shade environment has more advantages than LASlK.

[Objective]To investigate the influence of wing-like memory alloy intrasegmental fixator(WMAIF)on healing of lumbar spondylolysis.[Method]Eighteen healthy hybrid adult dogs were used in the experiment,regardless of gender,the L_6 isthmic portion were injured by operation randomly and equally divided into three groups.Group Ⅰ were fixed with WMAIF,groupⅡ were fixed with steel wire,group Ⅲ were treated with nothing.Every group was examined through CT at 2,4,6,8 and 10 weeks.[Result]In group Ⅰ,the fracture achieved healing at 6 weeks after operation.In group Ⅱ,the fracture achieved healing at 10 weeks after operation,while no repair of fracture was found in group Ⅲ.[Conclusion]Lumber spondylolysis fixation with WMAIF has stable and continued axial stress,WMAIF is beneficial to fracture healing,and is a new and reliable intrasegmental instrument for direct repair of lumbar spondylolysis.

CD2 Antigens ; metabolism ; CD3 Complex ; metabolism ; Epstein-Barr Virus Infections ; Hematopoietic Stem Cell Transplantation ; Herpesvirus 4, Human ; isolation & purification ; Humans ; Killer Cells, Natural ; pathology ; virology ; Lymphoproliferative Disorders ; metabolism ; pathology ; therapy ; virology ; Poly(A)-Binding Proteins ; metabolism ; Prognosis ; T-Cell Intracellular Antigen-1

AIM: To compare the measurement of anterior chamber depth(ACD) inclusive of corneal thickness using intrao-cular lens(IOL) master and ultrasound biomicroscopy (UBM) and evaluate the repeatability of each method.METHODS: Two consecutive measurements of ACD were prospectively performed using IOL master and UBM in 60 eyes in 60 individuals. Mean values were compared using the paired t test. For each individual, ACD measure-ments was performed 5 times to estimate the repeatability of each method by a coefficient of variation(CV).RESULTS: The mean ACD was 2.95±0.25mm with the IOL master and 2.96±0.22mm with the UBM. This diffe-rence was not statistically significant (P=0.631).The coefficient of variation (CV) was 0.56%±0.26% and 0.65%± 0.36% in IOL master and UBM, respectively.CONCLUSION: The mean ACD of IOL master was the same as UBM. The repeatability of IOL master is better than UBM.

BACKGROUND: The degree of neurofilament (NF) phosphorylation is closely correlated with the occurrence of Alzheimer disease (AD), and apolipoprotein E4 (apoE4) is a generally acknowledged liability factor for AD, but the effect and mechanism of apoE4 on the NF phosphorylation in neurons are not very clear. It has been reported that in the neurons cultured in vitro and in brain tissue of AD patients, the amino acid residues of apoE4 protein C terminal (272-299) could be truncated by hydrolysis,and produce truncated-apoE4 fragment. The latter interacts with the NF phosphorylation in neurofibrillary tangles (NFTs), which are the characteristic pathological changes of AD.OBJECTIVE: To observe the effect of truncated-apoE4 overexpression on the NF phosphorylation in the cultured neurons.DESIGN: A non-randomized controlled observation.SETTING: Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tongji Medical College, Huazhong University of Science and Technology.MATERIALS: The experiment was carried out in the Laboratory of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology in December 2005. The mice neuroma cell strain N2a was provided by Dr. Xu.METHODS: The truncated-apoE4(△272-299) cDNA was subcloned into pEGFP-c3 to form pEGFP-T-apoE4 recombinant. Then pEGFP-c3, pEGFP-apoE4 and pEGFP-T-apoE4 were transfected into N2a cells by lipofectamine2000 respectively. NF phosphorylation was detected by Western blot assay. The activities of glycogen synthase kinase-3 (GSK-3) and cyclin-dependent kinase 5(CDK-5) were measured.MAIN OUTCOME MEASURES: The degree of NF phosphorylation and the activities of GSK-3 and CDK-5 were mainly observed.RESULTS: In the transfected groups, the contents of phosphorylated NF were significantly increased, the GSK-3 activities were significantly increased, which were the most significant in the pEGFP-T-apoE4 transfected group (P＜0.05), but the CDK-5 activities were not significantly different from that in th e control group (P＞0.05).CONCLUSION: These results indicate that in vitro overexpression of truncated-apoE4(△272-299) can lead to NF hyperphosphorylation by activating of GSK-3 but not CDK-5, which may be the underline mechanism of AD induced by truncated-apoE4(△272-299).

Epstein-Barr Virus Infections ; Herpesvirus 4, Human ; Humans ; Lymphoproliferative Disorders ; classification ; pathology ; virology

OBJECTIVETo explore significance of preoperative color Doppler flow imaging (CDFI) for screening deep vein thrombosis in upper limbs fracture.

METHODSFrom January 2009 to December 2011, 1200 patients with upper limb fracture caused by trauma were respectively analyzed. There were 833 males and 367 females,ranging from 20 to 78 (mean 41.94 +/- 15.41) years. All patients had swelling and pain in injured limbs when enrolled. CDFI was used to examine upper limbs vein at 3 to 10 d after improvement of swelling, 1 day before reduction. Relationship among occurrence of thrombosis, gender, age and fracture sites were analyzed. Patients with DVT were analyzed with respective study to decide whether combined with diabetes, hypertension and hyperlipidemia.

RESULTSAll patients were checked by CDFI,which confirmed 9 cases with DVT. The rate of thrombosis was 0.75%, women than men (P < 0.01). The risk of blood clots occurred over 30 years, and the occurrence of thrombosis in humerus fracture was higher than radius ulnar fracture. One of 9 patients combined with hypertension and hyperlipidemia, 1 case combined with diabetes, and 7 cases with no complication.

CONCLUSIONUpper trauma fracture may occur deep vein thrombosis; CDFI should be used to check DVT in qualified hospital,which can maintain medical safety,decrease occurrence of medical disputes, and ganrantee patient's safety.

Adult ; Aged ; Aged, 80 and over ; Diabetes Complications ; surgery ; Female ; Fractures, Bone ; complications ; surgery ; Humans ; Hypercholesterolemia ; complications ; Hypertension ; complications ; Male ; Middle Aged ; Preoperative Period ; Ultrasonography, Doppler, Color ; Upper Extremity ; injuries ; Venous Thrombosis ; complications ; diagnostic imaging ; Young Adult

OBJECTIVE To investigate the existence of genes for beta-lactam antibiotic resistance and for aminoglycosides modification enzymes(AMEs) in Pseudomonas aeruginosa(PAE) isolates from ICU patients and analyze the homology among strains.METHODS ?-Lactamase genes including TEM,SHV,OXA-10,PER,VEB,GES,CARB,IMP,VIM,SPM,GIM,DHA,FOX,MOX and oprD2,were detected by PCR amplication in 21 PAE isolates.The genes for AMES including aac(3)-Ⅰ,aac(3)-Ⅱ,aac(6′)-Ⅰ,aac(6′)-Ⅱ,ant(3″)-Ⅰ and ant(2″)-Ⅰwere determined by PCR amplification as well.RESULTS Among 21 isolates 21(100%),2(9.5%),1(4.8%),2(9.5%)and 4(19.0%) were positive for TEM,SHV,GES,CARB and VIM genes,respectively.The deletion of oprD2 gene was found in 14 out of 21 strains.Other ?-lactamase genes were absent in all isolates.As for AME genes,aac(3)-Ⅱ,aac(6″)-Ⅰ,aac(6)-Ⅱ,ant(3″)-Ⅰ,ant(2″)-Ⅰ and aac(3)-Ⅰgenes were present in 19.0%,23.8%,9.5%,4.8%,and 19.0% of 21 isolates,However,aac(3)-Ⅰ gene was no position in any isolates.CONCLUSIONS P.aeruginosa carries various beta-lactamase and AME genes in ICU patients.Genetic cluster analysis suggested that clonal propagation result in nosocomial infection of PAE.

Objective:To investigate the possibility and feasibility of the simultaneous coronary artery bypass grafting (CABG) with tumor excision in patients suffering from tumor combined with coronary artery disease(CAD). Methods:From August 2000 to July 2006, ten patients who were suspected of tumor (four patients suffered from urinary system tumor, two digestive system tumor, and four pulmonary tumor) with coronary artery disease were successfully treated by simultaneous surgeries. Surgical incisions were chose by the different tumor position. All carried on the CABG before tumor excision except one case. The two cases had cardiopulmonary bypass CABG, the rest eight had off-pump CABG. Follow-up was conducted after operation. Results:The combined operations were satisfied. There was no in-hospital mortality, no postoperative hemorrhage, no myocardial ischemia or infarction, with few complications. Postoperative in-hospital stay was 10-34 days, average 22.4 days. All discharged in cure. One patient lost the follow-up. Nine patients were followed up from six months to seven years three months. Two patients died from metastasis, and the others survived with satisfied follow-up without cardiovascular events. Conclusion:The simultaneous coronary artery bypass grafting with tumor excision for patients who suffer from either CAD with benign or malignant tumor is safe and feasible with satisfied short-and long-term survival.