AIM:To observe the effect of wearing glasses with full correction or under-correction on the development of juvenile myopia.
METHODS:This study included 132 cases ( 264 eyes ) from January 2008 to September 2012 who were collected from our clinic. They were divided into 2 groups, full correction and under- correction. Students in group 1 wore glasses with full correction, students in group 2 wore glasses with under-correction 0. 25D to 0. 5D lower than normal. Reexamination was done every 6mo. After 12mo, refractions were checked, the development of myopia was compared.
RESULTS: There were no statistically significant differences between two groups after 6mo ( P=0. 0693 );however, there were significant differences after 12mo( P=0. 0013).
CONCLUSION:The development of myopia is slow if students often wear glasses with full correction.

OBJECTIVE To investigate the protective effect of urantide on myocardial apoptosis in rats induced by ischemia/reperfusion (I/R) or hypoxia/reoxygenation (H/R) injury and explore the underlying mechanism. METHODS ① In vivo test A rat myocardial I/R injury model was induced by ligating and untying the left anterior descending coronary artery with occlusion 30 min/reperfusion 60 min. Urantide 3, 10 and 30 μg·kg-1 was iv given 10 min before ischemia. TUNEL labeling was used for apoptosis measurement in myocardium. Immu-nohistochemical assay was used for Bcl-2 and Bax proteins expression detection. ② In vitro test An H/R cell model was set up by 3 h hypoxia/3 h reoxygenation. Urantide 0.1,1 and 10 nmol·L-1 was added just before hy-poxia, respectively. Hoechst33258 assay and flow cytometric techniques were used to detect apoptotic cells. RESULTS ① In vivo test Compared with sham group, the number of TUNEL-positive cells in I/R model group significantly increased (P<0.01) ; Bcl-2 protein expression slightly increased with no significant difference, Bax protein expression markedly increased ( P < 0. 01 ) , while Bcl-2/Bax ratio in I/R model group significantly decreased (P <0.01). Compared with I/R model group, the number of TUNEL-positive cells in urantide 10 and 30 μg·kg-1 groups was significantly decreased by about 36.6% and 57. 2% (P<0.05) ; Bax protein expression markedly decreased ( P <0.05 ) , while Bcl-2/Bax ratio was significantly augmented ( P <0.05 ). Urantide 30 u,g-kg1 also markedly increased Bcl-2 protein expression(P <0.05). ② In vitro test Compared with normal control group, the apoptosis rate in H/R model group significantly increased (P<0. 01). Hoechst33258 assay revealed that urantide 0.1, 1 and 10 nmol·L-1 reduced H/R-induced apoptotic nuclei by about 27.9% , 59.0% and 75. 4% , respectively (P <0.05). Flow cytometric techniques showed that the apoptosis rate was significantly reduced by about 32.8% and 64. 7% with administration of urantide 1 and 10 nmol·L-1 (P < 0. 01). CONCLUSION Urantide exerts an inhibitory effect on I/R or H/R-induced apoptosis by increasing Bcl-2 protein expression and decreasing Bax protein expression.

Aim To investigate the protective effect of the potent UT receptor(urotensin Ⅱ receptor,UTS2R)antagonist-urantide against myocardial ischemia-reperfusion(I/R)injury and its probable mechanisms in rats.Methods Rat myocardial I/R injury was induced by ligating and untying the left anterior descending coronary artery.The rats were randomly assigned into 6 groups:sham group,model group,urantide 3 ?g?kg-1 group,urantide 10 ?g?kg-1 group,urantide 30 ?g?kg-1 group and Ver(Verapamil)1.6 mg?kg-1 group.All animals except sham group were subjected to 30 min of occlusion and 60 min of reperfusion.Urantide or Ver was given ten minutes before occlusion through intravenous drug perfusion.Heart rate(HR)and the ST segment change of electrocardiogram(ECG)were recorded.The content of malondialdehyde(MDA)and nitric oxide(NO),and the activity of lactate dehydrogenase(LDH)and nitric oxide synthase(NOS)in blood serum were measured.Infarct size(IS),as a percentage of the area at risk(AAR),was determined by Evans blue and TTC double staining.The expression of iNOS protein was detected by western blotting.Results The results demonstrated that during the process of I/R,HR decreased significantly whereas ST segment of ECG markedly elevated.After I/R,MDA content and LDH activity in blood serum increased significantly,while total NO content and total NOS activity decreased sharply.Urantide(10,30 ?g?kg-1)had no significant effect on HR changes,but could markedly inhibit the elevation of ST segment of ECG,MDA content and LDH activity,and inhibit the decline of total NO content and total NOS activity,at the same time decrease I/R induced IS/AAR.But 3 ?g?kg-1 urantide had no significant effect on above indexes.Except for this,urantide(10,30 ?g?kg-1)down-regulated the I/R induced expression of iNOS.Conclusions Our findings indicate that urantide has a protective effect against myocardial I/R injury in rats.The cardio-protective involves the inhibition of lipid peroxidation and the stimulation of NO release.

Objective To investigate the influence of the aberrant protein expression and mRNA transcription of transforming growth factor ? 1(TGF? 1) on the biological behavior of human bladder transitional cell carcinomas. Methods The expression of TGF? 1 was investigated in 74 specimens of TCCs by SP immunohistochemistry staining, and the level of TGF? 1 mRNA were determined in 43 cases of TCCs by the method of quantitative RT PCR. Results The positives expression rate of TGF? 1 was 89.2%. Superficial tumors had lower overexpressive rate of TGF? 1(33.3%) than the invasive TCCs(83.8%), P

Animals ; Animals, Newborn ; Blotting, Western ; Brain ; metabolism ; Disease Models, Animal ; Hypoxia, Brain ; metabolism ; Immunohistochemistry ; Myelin Proteins ; genetics ; immunology ; metabolism ; Nogo Proteins ; RNA, Messenger ; metabolism ; Rats ; Rats, Sprague-Dawley ; Reverse Transcriptase Polymerase Chain Reaction ; Time Factors

Aged ; Astragalus Plant ; Cerebral Infarction ; drug therapy ; Drug Combinations ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Phytotherapy ; Plant Extracts ; Platelet Aggregation ; drug effects ; Salvia miltiorrhiza

AIM: To establish an effective and convenient method for applying HPLC fingerprints to quality control in the production of Xiasangju Granules(Spica prunellae,Folium mori,Flos chrysanthemi). METHODS: Komasil Sunfrie C_(18)(150 mm?4.6 mm,5 ?m) analytical column was used and eluted with a gradient program consisted of phase A(1% acetic acid) and phase B(methanol) and detected at 290 nm.The fingerprints of aqueous extract,alcohol-precipitated extract,concentrate and finished product were compared with. RESULTS: The fingerprint method for Xiasangju Granules was established.The similarity among 10 batches of Xiasangju Granules was no less than 0.970.The difference between extracts and finished product of Xiasangju Granules was obvious. CONCLUSION: This validated method is available for quality evaluation and quality control in Xiasangju Granule's production.

BACKGROUND:Coracoclavicular ligament reconstruction with transclavicular-transcoracoid driling is an effective surgical technique to treat acromioclavicular dislocation. A good driling in the clavicle leads to a perfect bony tunnel and a good surgery. OBJECTIVE: To observe the effects of different driling positions of the clavicle on the location of bony tunnels in coracoclavicular ligament reconstruction. METHODS:Sixty three-dimensional digital models of the clavicle and coracoid process were constructed by Mimics13.0. Virtual transclavicular-transcoracoid bony tunnels were established according to different surgical planes with different driling positions in the clavicle. Parameters of these bony tunnels were measured, and the safety was evaluated. Option 1: The driling was made 30 mm distal to the clavicle, located in the center of the front and rear edges of the clavicle surface. Option 2: The driling was made 40 mm distal to the clavicle, located in the center of the front and rear edges of the clavicle surface. Option 3: The driling was made at the straight line of tapered nodule tip and the midpoint of the base of the coracoid process, located at the rear edge of the clavicle upper surface. RESULTS AND CONCLUSION: Bony tunnels in option 1 were extremely on the inside of the coracoid. Bony tunnels in options 1 and 2 were not in the center of clavicle. Bony tunnels in option 3 were in the center of both clavicle and coracoid. The method of locating the driling position with a certain distance to the distal clavicle leads to different results in man’s and woman’s models. To ensure that the bony tunnel can pass through the center of clavicle and coracoid, it is suggested to dril at the straight line of tapered nodule tip and the midpoint of the base of the coracoid process and nearby the rear edge of the clavicle upper surface.

OBJECTIVE To evaluate the value of serum procalcitonin(PCT) levels for differentiating Gram-positive and-negative bacteria infected critically ill patients in intensive care unit(ICU). METHODS Serum PCT levels were measured in 80 patients with sepsis and severe sepsis in ICU.Of the 80 patients,40 were infected with Gram-positive bacteria and 40 were infected with Gram-negative bacteria.Another 40 patients with fungi or viruses infection or non-infection from ICU were measured in parallel as control. RESULTS Serum levels of PCT in patients with Gram-negative bacteria were significantly higher than in those with Gram-positive bacteria and control ones(18.5?5.8ng/ml vs 3.9?2.1ng/ml and 0.3?0.2 ng/ml,respectively,P

Objective To improve the purifying method of Jo-1 antigen from rabbit thymus used for detection of anti-Jo-1 antibody by dot-blotting immunoassay(DB).Methods The rabbit thymus glands were cut into pieces,homogenized and extracted by PBS.Total protein was precipitated by acetone to get acetone powder(RTAP).The RTAP was solved in PBS and separated by an by anti-Jo-1 IgG affinity column.Results 5～7 g RTAP was obtained from 100g rabbit thymus glands.There was 19%～24% of protein in RTAP.Jo-1 antigen was enriched around 1900 folds through affinity chromatography,with 2.5% recovery of antigenic activity.In this preparation,there were several bands on SDS-PAGE,but only one band about 50 ku,reacted with anti-Jo-1 antisera on immunoblotting.Dot-blotting also showed that the antigen only reacted with Jo-1 antisera.The purified Jo-1 antigen was not stable for long time,but the antigenic activity could maintain for a long time when there was MgCl2 in the solution.Conclusion Affinity chromatography was a simple and easy method for purifying Jo-1 antigen from rabbit thymus.The antigen purified by affinity chromatography could meet the requirement for detecting Jo-1 antibody bydot-blotting.