?AIM:To investigate the measurement of central anterior chamber depth ( ACD ) in patients with acute primary angle - closure glaucoma ( APACG ) with A - scan ultrasound, Pentacam and ultrasonic biological microscope ( UBM) .?METHODS: Thirty-five patients (35 eyes) with APACG were selected, of whom central ACD were measured with A-scan ultrasound, Pentacam and UBM.?RESULTS: The measurement values of ACD with A-scan ultrasound, UBM and Pentacam were 1. 5633±0. 2089, 1. 5783 ± 0. 2067, 1. 6275 ± 0. 2296mm, which was equal variance tested by the homogeneity of variance, and was significant different by multiple comparision (F=4. 074, P=0. 026). The difference of ACD between the two groups of A-scan ultrasound and UBM, A-scan ultrasound and Pentacam, UBM and Pentacam were statistically significant ( P = 0. 032, 0. 023, 0. 012 ). Altman- Bland analysis showed that the three methods were not consistent with each other.?CONCLUSION: The ACD value of the APACG with the three methods is the largest using Pentacam, followed by UBM and A - scan ultrasound. In clinical the three methods with different advantages can complement each other, but cannot be replaced. In order to obtain more accurate results, we should combine the advantage and make comprehensive analysis.

Objective To establish the HPLC fingerprint of Disporum cantoniense. Methods HPLC analysis was performed on Agilent Zorbax SB-C18 chromatographic column ( 250 mm × 4. 6 mm, 5 μm) with the mobile phase consisting of methanol-0.05% phosphoric acid in gradient mode.The flow rate was 1.0 mL·min-1, the detection wavelength was 256 nm and the column temperature was 30 ℃. Results The HPLC fingerprint of 15 batches of Disporum cantoniense was established. Thirteen common peaks in the fingerprint were demarcated, four of which were identified by reference substances. Chemical pattern recognition of fingerprint was performed by hierarchical cluster analysis and principal component analysis. Conclusion The method is simple, accurate and has a good repeatability, and can be used for quality control of Disporum cantoniense.

Objective To quantify aqueous flare and cells in the eyes of healthy subjects and to evaluate the effect of age and sex on the blood aqueous barrier. Design Prospective case series. Participants Four hundred and forty-two eyes of 221 healthy sub- jects. Methods Aqueous flare and cells of 442 eyes were evaluated with FC-2000 laser flare cell meter (LFCM). Main Outcome Mea- sures Aqueous flare and cells. Results The mean flare values of all of eyes was 4.7?2.9 pc/ms, it was 3.1 pc/ms in the age group of less than 10 years, 3.8 pc/ms in the age group of 40-49 years and 11.0 pc/ms in the age group of 80 years or over. The mean flare val- ues in the age groups of 50 years or over were significantly higher than that in the age group of 40-49 years (P

Vascular endothelium plays an important role in regulating vascular homeostasis. Over the past years, it has become clear that endothelial dysfunction is a key event of pathophysiological changes in the initiation and progression of injuries induced by extreme environmental factors. The present review summarizes current understanding of vascular endothelial dysfunction induced by hypoxia, cold and heat, and provides the information for prevention and treatment of environmental exposure injuries.
Endothelium, Vascular ; physiopathology ; Environment ; Humans ; Hypoxia ; physiopathology ; Temperature ; Vascular System Injuries

OBJECTIVETo observe the neurological protective effects of progesterone (PROG) on focal cerebral ischemia/reperfusion injury in rats and to explore its possible mechanism.

METHODSOne handred and twenty male SD rats were divided into three groups randomly: sham-operated group, middle cerebral artery occlusion ( MCAO ) group and PROG + MCAO group( n = 40). The right temporary MCAO model was established by the line-embolism method. The PROG + MCAO group rats were according to 8 mg/kg intraperitoneal injection PROG, after that 30 min, the rats were suffered ischemia/reperfusion. After rats were suffered ischemia for 2 h and reperfusion 0, 24, 48, 72 h stress, the nervous functional defect degree were evaluated by longe scoring, and the expression of two-pore domain K channel 3 (TASK3) mRNA in brain tissue were detected by the real-time PCR.

RESULTSPROG (8 mg/kg) could significantly reduced the nervous functional defect degree in rats after ischemia/reperfusion 24, 48, 72 h (P < 0.05). The results of real-time PCR showed that the TASK3 mRNA expression in the brain tissue at all time points significantly decreased in MCAO group compared with sham-operated group (P < 0.05). However, compared with MCAO group, the expression of TASK3 mRNA in brain tissue at all time points dramatically increased in PROG + MCAO group (P < 0.05).

CONCLUSIONPROG can improve the nervous functional defect degree after focal cerebral ischemia/reperfusion injury in rats, and the mechanism might be associated with up-regulating the expression of TASK3 mRNA in brain tissue.

Animals ; Brain ; drug effects ; pathology ; Brain Ischemia ; drug therapy ; Infarction, Middle Cerebral Artery ; Male ; Neuroprotective Agents ; pharmacology ; Potassium Channels, Tandem Pore Domain ; metabolism ; Progesterone ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Real-Time Polymerase Chain Reaction ; Reperfusion Injury ; drug therapy

Objective To investigate the effect of Valsartan on Disintegrin metalloproteinases (ADAMs10,17) expressions in the process of heart failure (HF) after myocardial infarction (MI).MethodsAdult male Wistar rats weighing (200 ± 30) g were given humane care in compliance with the rules of the Animal Experimentation Committee of the first hospital of Harbin Medical University.And then the left anterior descending coronary artery was ligated.Based on UCG (LVEF ＜ 45％) Results The successfully MI-operated Wistar rats were divided randomly (random number) into three groups:HF group (HF group),placebo group (Pla group) and valsartan group (Val group).The rats in the Pla group and Val group were given the same volume of normal saline and valsartan 50 mg/ (kg · d),provided by Novartis company) by gavage.After 16 weeks,heart function was assessed by hemodynamic evaluation and serum TNF-α from LV cavity was measured by ELISA (R&D,USA).Muscle samples were extracted from the ischemic zone,and then the ADAMs 10,17 expressions were measured by immunoblotting.All the data were expressed by mean ± standard and evaluated by Student' s t test.Results After 16 weeks,the data of LV function including LVdp/dt LVdp/dtmin and LVSP were significantly improved in Val group than the others (P =0.006,P =0.015,P =0.003),and the LVEDP level was decreased (P =0.002).At the same time,the TNF-o level in the Val group was lower than that in the HF group (P =0.023).The ADAM17 and TNF-R1 expressions in the Val group was reduced compared with those in the HF group (P =0.01 1,P =0.022).However,ADAM10 expression is unchangeable in the four groups.Conclusions Valsartan may reduce the ADAM17 and TNF-R1 expressions in the ischemic zone,decrease the TNF-αconcentration and function in LV cavity so as to inhibit cardiac remodeling and improve heart function after MI.

Objective To study the transduction efficiency of expressing human neprilysin by using a lentiviral vector (Lenti-NEP) in mouse embryonic neural stem cells (NSC) in vitro.Methods Primary NSC were harvested from C57BL/6J pregnant mouse at embryonic day 11.5 and transducted with LentiNEP.Immunofluorescent stainingand Western blot were performed to detect NEP protein expression in NSC.Degradation of amyloid beta 1-40 (Aβ1-40) by NEP protein transduced with Lenti-NEP in NSC was analyzed using ELISA and HPLC.Results Over 90％ NSC were successfully transduced with Lenti-NEP via observation of fused protein green fluorescent protein under the microscopy.Expressions of NEP transduced with Lenti-NEP in NSC and of the markers of NSC (nestin) and neuron (MAP2).The enzyme activity of 2.5 μg (21.00 ± 2.51) and 1.0 μg (15.00 ± 0.54) NEP on degrading Aβ1-40 was shown to improve significantly compared to 0.5 μg NEP(8.00 ±0.81,t =40.4 and 12.7,respectively,both P ＜0.01).The activity of NEP was inhibited in the presence of 50 μmol/L phosphoramidon (0.5 pg:0.08 ±0.01 ;1.0 μg:0.04 ±0.01 ;2.5 μg:0.05 ±0.01,t =17.2,51.3 and 14.1,respectively,all P ＜0.01).The hydrolytic cleavage on degrading Aβ1-40 by NEP was 11.4％,28.4％ and 93.7％ with incubation for 1 h,4 h and 12 h,respectively.Conclusions Lentiviral vector successfully delivers NEP gene to NSC in vitro.Targeting on NEP and NSC may provide potential therapeutic tool for Alzheimer' s disease.

Objective To investigate the attentional network in patients with temporal lobe epilepsy(TLE) and the disease-related factors. Methods Fity-four patients with TLE and 40 controls were enrolled in our hospital from January 2007 to December 2008.The computerized ANT software was used for evaluating the attentional network efficiency and the clinical date of the patients with TLE were recorded. Logistic regression was used to identify the risk factors of attentional network efficiency. Results The mean reaction time(TLE:688.2±138.1 ms;Control:625.1±100.1 ms, t=2.06, P <0.05)and executive control network efficiency (TLE:155.7±57.0 ms;Control:108.0±33.8 ms, t=4.62, P <0.01) of the TLE group were lower than the healthy control group. The efficiency of alerting network and orienting network between the two groups were no significant difference. Logistic regression analysis showed that the positive epileptiform activity was an independent risk factor of the attentional impairment(95% CI : 1.03～42.33, OR =6.603, P =0.043). Conclusions The ANT demonstrate that patients with TLE may accompany with attentional executive control network efficiency impairment. Epileptiform discharge may cause attentional executive network efficiency impairment.

OBJECTIVE:To compare the therapeutic effect of surgical approach that should be used for posterior interbody fusion,posterolateral fusion with or without lumbar interbody fusion for adult spondylolisthesis.METHODS:From January 2004 to May 2008,75 patients with adult spondylolisthesis were retrospectively analyzed,comprising 22 males and 33 females,aged 53.3 years (ranging 49-70 years).There were 47 cases in L4,28 in L5;5 cases of degree Ⅰ,24 of degree Ⅱ,37 cases of degree Ⅲ,and 9 of degree Ⅳ.A total of 21 patients were treated with pedicle screw fixation and posterolateral lumbar fusion (group A),26 with pedicle screw fixation and posterior lumbar interbody fusion using cage (group B),and 28 with pedicle screw fixation and posterolateral lumbar fusion with posterior lumbar interbody fusion using cage.The satisfaction rate and fusion rate were compared among the three groups.RESULTS:All 75 patients were followed up for 6 months 3 years.The fusion rate of group A was 57%,and the satisfaction rate was 62%;the fusion rate of group B was 85%,and the satisfaction rate was 89%;the fusion rate of group C was 89%,and the satisfaction rate was 93%.There were no significant differences in the satisfaction rate and fusion rate between groups B and C (P>0.05),but the satisfaction rate and fusion rate of groups B and C were superior over group A (P<0.05).CONCLUSION:Posterior interbody fusion and posterolateral fusion with lumbar interbody fusion display similar treatment effects,which are better than posterolateral fusion.

A rapid LAMP detection method with primers designed on genus-specific region identified in the gyrA gene was established in this assay. All four Campylobacter jejuni from different sources were detected positive and fourteen non Campylobacter bacteria were negative, which shows excellent specificity of the primers. Compared with plate count and PCR method, the LAMP method and the PCR method had equal sensitivity, which were three orders of magnitude higher than plate count. In this assay, we also found out that the treatment of DNase could reduce the dead bacteria DNA effectively. The LAMP detection on chicken indicated relatively good result on detection of Campylobacter jejuni combining with treatment of DNase.