Humans ; Myocardial Infarction ; complications ; therapy ; Myocardial Reperfusion Injury ; etiology ; therapy

Athletes ; Humans ; Physical Conditioning, Human ; physiology ; Running ; physiology

Objective: To construct a vector encoding short hairpin RNA(shRNA) targeting annexin H and to observe its influence on annexin II expression. Methods: Annexin II-targeted hairpin RNA1 and RNA2 were devised according to the Gen-Bank annexin II sequence. Meanwhile, a nonspecific sequence was taken as negative control. The oligonucleotide strands of DNA fragments encoding the above shRNAs were synthesized. After annealing of the complementary strands, the DNA fragments were cloned into human pGenesil1 plasmid followed by amplification in E. coli and sequencing. The 3 pGenesil1 constructs were then transfected into HEK293 cells and the expression of annexin II was examined by real-time fluorescence quantitative RT-PCR and Western bolt. The non-transfected cells were taken as blank control. Results: Restrictive enzyme digestion and sequencing verified that the 3 recombinants (pGenesil1-annexin II shRNA1, pGenesil1-annexin II shRNA2, and pGenesil1-negative shRNA) were correct. The annexin II expression was significantly lower in HEK293 cells transfected with pGenesil1-annexin II shRNA2 compared with those transfected with pGenesil1-annexin II shRNA1, pGenesil1-negative shRNA, and blank control (P<0.05); and there was no significant difference between the latter 3. Conclusion: We have successfully generated an annexin II-targeted shRNA construct, which can significantly inhibit the expression of annexin II.

Objective: To separate human kidney phosphoproteome by two-dimensional gel electrophoresis. Methods: The phosphorylated proteins from human kidney tissues were enriched with phosphate metal affinity chromatography (PMAC) resin. After being concentrated and desalted, the samples were separated by isoelectric focusing on first dimension and SDS electrophoresis on second dimension. Results: The phosphorylated proteins were successfull y extracted from human kidney tissues and were separated by two-dimensional gel electrophoresis. Conclusion: Phosphoprotein enrichment technique combin ed with two-dimensional gel electrophoresis is an effective approach to study phosphoproteome, laying a foundation for further investigation of human kidney phosphoproteins.

Animals ; Bone Density ; Diagnosis, Differential ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Medicine, Chinese Traditional ; Osteoporosis ; drug therapy ; etiology ; metabolism ; Ovariectomy ; Phytotherapy

Child ; Humans ; Otolaryngology ; Pediatrics

Objective To evaluate the clinical value of multi-slice spiral CT in diagnosing tracheobronchial foreign bodies in chil-dren.Methods 139 patients with airway foreign body confirmed by bronchoscopy were examined with 128-slice spiral CT,and then the CT data was reconstructed by using multiple-planar reconstruction(MPR),curved planar reconstruction (CPR),volume render-ing(VR),minimum intensity projection(MinIP)and virtual endoscopy (VE).The CT results were compared with bronchofibersco-py findings.Results Among the 139 cases,the foreign bodies located at trachea in 13 cases,right bronchia in 75 cases,left bronchia in 48 cases,and bilateral bronchia in 3 cases.137 cases (98.6%)were correctly diagnosed,and 2 cases (1.4%)were missed on CT.Although the difference of the results at trachea and right main stem bronchus was statistically significant (P <0.05),the over-all results was not significant difference between CT and bronchoscopy examination (P =0.340).Associated findings included em-physema in 74 cases,pneumonia in 48 cases,atelectasis in 22 cases,mediastinal displacement in 57 cases,lung interstitial emphyse-ma in 4 cases,pneumomediastinum and pneumoderma in 4 cases,bronchiectasis in 2 cases,and pleural effusion in 4 cases.Conclu-sion MSCT and its postprocessing techniques can accurately and intuitively display the tracheobronchial foreign body and complica-tions,which has important value for clinical application.

To explore the changes of retrobulbar hemodynamics in diabetes via color doppler ultrasound.
●METHODS: Totally 80 patients ( 160 eyes ) with eye diseases in type 2 diabetes from June 2010 to May 2013 in our hospital were enrolled as research group. By fundus photography and direct ophthalmoscopy, patients were assigned to diabetes without retinopathy group ( DNR subgroup), non- proliferative diabetic retinopathy group (NPDR subgroup) and proliferative diabetic retinopathy group (PDR subgroup). Of 60 healthy patients (120 eyes) over the same period were chosen as control group. The doppler parameters of central retinal artery ( CRA ), posterior ciliary artery (PCA) and ophthalmic artery (OA) were measured.
●RESULTS: There were significant differences on circulatory parameters of CRA, PCA and OA between both groups ( P < 0. 05 ). Significant differences were also observed on peak systolic velocity ( PSV), end diastolic velocity ( EDV) and resistance index ( Rl) of CRA, PCA and OA among DNR subgroup, NPDR subgroup and PDR subgroup ( P < 0. 05). The EDV, Rl and PSV of control group differed from those of DNR subgroup, NPDR subgroup and PDR subgroup (P<0. 05).
●CONCLUSlON: The monitoring of retinal blood flow and analysis of blood spectrum morphology via color doppler ultrasound can effectively evaluate the degree of diabetic retinopathy lesions, especially before DR vascular disease. Early detection can reveal the hemodynamic change pattern of DR, facilitating the prevention of diabetic eye complications and improvement of the quality of life.

OBJECTIVE: To synthesize magnetic thermosensitive hydrogel and study its heat effect under alternating magnetic field in vitro. METHODS: PLGA-PEG-PLGA triblock copolymer was synthesized by ring-opening polymerization of D, L-lactide and glycolide with PEG1500 in the presence of stannous iso caprylate. Magnetic thermosensitive hydrogel of different concentrations were prepared using different currents. The influences of the concentration of magnetic fluid and current of magnetic field on the heat effect were separately observed. RESULTS: The synthetized PLGA-PEG-PLGA triblock copolymer was excellently temperature sensitive. It retained the thermo-sensitivity of original hydrogel when the magnetic fluid was loaded. The 5, 10 and 20 min heating ability of magnetic fluid was positively linearly correlated with its concentration (r=0.9985, 0.9893 and 0.9711, respectively, n=3) and current of magnetic field (r=0.9948, 0.9977 and 0.9994, respectively, n=4). CONCLUSION: The magnetic thermosensitive hydrogel has excellent temperature sensitivity. When alternating magnetic field is applied, the temperature of the system can rise and reach above LCST of hydrogel. The temperature can be controlled by changing the concentration of magnetic fluid and the current of magnetic field. Copyright 2012 by the Chinese Pharmaceutical Association.