Objective: To study the scavenging capacity of extract from four kinds of barley leaves on superoxide free radical and hydroxyl free radical. Methods: Measure the content of superoxide free radical and hydroxyl free radical by nitro blue tetrazolium(NBT) photo-reduction. Results: Along with the flavonoid in the reaction liquid, the scavenging rate shows ascending trend . When the concentration of flavonoid is 12?g/ml, its scavenging rate is 95.56% and 94.12% on superoxide free radical and hydroxyl free radical respectively. Conclusion: The flavonoids of barley leave s have stronger anti-oxidative action.

Objective: To evaluate the clinical effect of the double-orifice technique in the treatment of the anterior leaflet prolapse of mitral valve. Methods: 35 patients with severe anterior leaflet prolapse of mitral valve underwent valve repair using the double-orifice technique. The condition of valve was assessed with echocardiography preoperatively, intraoperatively, and postoperatively. Results: The mean postoperative valve area was (4 1?1 8) cm 2 against the preoperative valve area of (8 3?1 6)cm 2. Mild regurgitation was found in 2 patients after operation. There were no hospital deaths. At the latest follow-up, the heart function was improved significantly in all patients (NYHA class I). Echo-Doppler assessment of valve showed stable valve function in all patients. There were no late stenosis of valve and no late death. Conclusion: The results of this study show that the double-orifice technique is a safe and effective method for treatment of anterior leaflet of mitral valve with low mortality and morbidity, and excellent early and mid-term results.

Animals ; Birds ; Hemagglutinin Glycoproteins, Influenza Virus ; genetics ; immunology ; Humans ; Influenza A virus ; genetics ; immunology ; pathogenicity ; Influenza in Birds ; immunology ; pathology ; virology ; Influenza, Human ; immunology ; pathology ; virology ; Virulence ; genetics

AIM: To investigate the expressions of the cyclin dependent kinase inhibitor (CKI) in human corneal epithelium.METHODS: The expressions of CKI, P27, P21 and proliferating cell nuclear antigen (PCNA) were tested in different regions of corneal epithelium by SP immunohistochemistry.RESULTS: Limbal basal cells stained positively for PCNA while central corneal epithelium cells stained negatively for PCNA, their difference was statistically significant (P＜0.01).Positive staining for P27 and P21 were observed in central epithelium, but there was no positive staining in limbal epithelium. Their difference were also statistically significant (P＜0.01).CONCLUSION: The different expressions of CKI P27, P21and PCNA in different corneal epithelial regions suggest that in limbal basal layer there are a group of cells that have higher proliferative capacity staying in G1 status, namely stem cell.

Adult ; Cadmium ; Female ; Glomerulonephritis, IGA ; etiology ; Humans ; Occupational Exposure

Objective To investigate the effect of reinforcing spleen and kidney method on adriamycin-induced CKD in rats and to explore its possible mechanism.Methods Totally 36 Sprague-Dawley rats were randomly divided into a Adriamycin-induced model group and a control group.The model group was further divided into five groups:the Adriamycin-induced model control group,bennazepril-treated group,and TCM treated low,moderate,and high dose groups.The level of serum creatinine,urea nitrogen,24hours urine protein and urine creatinine were measured at 14,28,42 days after establishing the model rats.And the protein expression of transforming growth factor-β1 (TGF-β1) and cyclin-dependent kinase inhibitor p21cip1 (p21)were detected by immunohistochemistry.Results The proteinuria was observed on the seventh day after injection of adriamycin in adriamycin nephropathy model group,and reached summit on the fourteenth day.Both TCM treated groups and benazepril group reduced the level of urine protein within 24 hours (P＜0.05),the reduction was most remarkable in the TCM high dose group.The expression of p21 and TGF-β1 (p21 288627.66±97021.65,TGF-β1 98405.14± 19216.89) in kidney increased in the model groups,while the TCM treated high dose group (p21 518886.35±6810.89,TGF-β1 222012.95± 50484.73) was significantly lower than the model control group (P＜ 0.05).Conclusion Reinforcing spleen and kidney method could decrease the level of urine protein within 24 hours by regulating the expression of p21 and TGF-β1,so thus to protect renal function and delay progress of kidney disease.

Objective Valsartan, the angiotensin Ⅱ type 1 receptor blocker, is recently proved to reduce urinary albumin at the microalbuminuria stage in human diabetic nephropathy without altering glucose metabolism. But the pathway is still uncertain. In present study, we examined the changes of adrenomedullin receptor (ADMR) mRNA and protein expressions in the renal cortex of diabetic rats to investigate the protective effects of valsartan on an experimental model of diabetic renal injury. Method The SD rats were randomly divided into following groups: normal rats, STZ-induced diabetic rats, and diabetic rats treated with valsartan. STZ-induced diabetic rats were treated with valsartan (10mg/kg body weight) or vehicle for 8 weeks. The expressions of ADMR mRNA in renal cortex were analyzed by RT-PCR, as well as ADMR protein expressions were detected through western blot. Results We found (1) Valsartan treatments reduced urinary albumin excretion in 24h, compared with the untreated. But no notable difference was seen in HbA1c and blood sugar of diabetic rats between the two groups. (2) Valsartan treatments increased the expressions of ADMR mRNA and protein in diabetic rats renal cortex. Conclusion These results indicate that valsartan treatment can upgrade the expressions of ADMR in the renal cortex of diabetic rats. It may be one of renal protective pathways of Ang Ⅱ type 1 receptor blocker.

BACKGROUND: It is reported that the first line medical staff have experienced posttraumatic stress disorder(PTSD) symptoms after severe acute respiratory syndrome (SARS) events. However, there are few reports regarding the PTSD symptoms among SARS patients and the public in epidemic area. OBJECTIVE: To investigate the occurrence and main influence factors of PTSD among SARS patients and the public in epidemic area.DESIGN: Sampling investigation.SETTING: First Hospital of Shanxi Medical University. PARTICIPANTS: Totally 114 SARS patients and 93 people were selected from the epidemic area of Taiyuan city from August to September in 2003.METHODS: Self-made stressor-cognition questionnaire, edited impact of event scale-revised (IES-R), perceived social support scale (PSSS), simple cope scale questionnaire(SCSQ), self-esteem scale(SES) and eysenck personality questionaire(EPQ) were conducted to 114 SARS patients and 93 common people in epidemic area. Correlative analysis was performed as well.MAIN OUTCOME MEASURES: ① Detection rate of PTSD among SARS patients and the public in epidemic area. ② The score of intrusion factor,avoidance factor and hyperarousal factor of two populations. ③ The correlative analysis between IES-R score and influence factor among SARS patients and the public in epidemic area.RESULTS: The detection rate of suspect of PTSD among SARS patients was higher than that in public of epidemic area(55.1% , 31%, P = 0.000)The score of intrusion, avoidance and hyperarousal factor of SARS patients ( 11.37±9.54, 10.28±7.67, 6.55±6.20) was much higher than those of the public in epidemic area(5.64±4.68,5.58±4.74, 4.43 ±4.63,P = 0. 000) . The correlative analysis showed that the difference on PTSD incidence between SARS patients and the public of epidemic area might be due to the different stressor intensity and features. The negative response mode was the risk factor of both SARS patients and the public of epidemic area while self-esteem was the protective factor of SARS patients. CONCLUSION: ① PTSD symptoms had appeared among all the correlative populations although the exposure intensity of SARS event stress was different. The detection rate of PTSD and symptoms of intrusion, avoidance and hyperarousal were much common among SARS patients; ② The difference between groupswas due to the different stressor intensity as well as the different influence factors of different population.

The transport of glutamic acid through the surfactant liq uid membrane of trioctyl (mono) methyl ammonium chloride(Aliquat336)Span 80-toluene has been studied. The optimal experimental conditions for transport of gl utamic acid with high efficiency and high speed were obtained. The conditions we re that membrane phase was 0.020 mol/L Aliquat 336+3%(W／V）Span80+Tolu ene; Outer phase was 5×10-4 mol/L glutamic acid and Ph=9.3；Inner pha se was 0.05 mol/L HCl. The transport rate of glutamic acid reached 93% in 2 min of transport time. The phenylalanine was also transported at the optimal transpo rt conditions of glutamic acid. The transport rates of Glycine and basic amino a cids were lower. This method can be used for extraction and separation of micro amount of amino acids.

Background It is very important for us to understand retinal function change in the patient with diabetic mellitus in clinic. At present,the study about diabetic mellitus associated with macular edema includes fundus fluorescense angiography ( FFA) and multifocal electroretinogram ( mfERG) etc.. However, seldom research is performed in the mfERG findings for different types of diabetic macular edema. Objective This study aimed to investigate the mfERG change in different types of diabetic macular edema compared with normal population. Methods Fifty-seven eyes with diabetic macular edema from 40 patients and 35 eyes from age-and gender-matched normal subjects were enrolled in this study. The eyes with diabetic macular edema were assigned to local macular edema group (n=16) ,diffuse macular edema group (n = 22) and cystoid macular edema ( n = 17 ) based on the manifestation of FFA. MfERG was recorded in all the individuals. The informed consent was obtained from each subject prior to any the medical examination. Results In focal diabetic macular edema group,the response density of P1 wave was significantly attenuated in ring 1 , showing a statistical difference in comparison with controls (t =2. 170,P = 0.038) ,and the latencies of P1 and N1 waves showed obvious prolong in ring 4 and 5 (t = 2.519,P = 0. 017 ;t = 2. 451 ,P = 0. 020). In diffuse diabetic macular edema group,the response densities of P1 and N1 waves were declined in ring 1,3,5 and ring 1,3,4,5 respectively,and the latencies of P, in ring 3,4 were significantly delayed respectively in comparison with controls (all P < 0. 05 ). In cystoid diabetic macular edema group, the response densities of P1 and N1 waves were lowed from ring 1 through 5 respectively, and the latencies of P1 and N1 waves were significantly longer from ring 3 through 5 and ring 4 respectively with the statistically significant difference from controls (all P<0. 05). The visual function of fovea was badly damaged. Conclusion These studies indicate that the most serious damage of visual function is in foveal area in cystoid diabetic macular edema group, and is then parafoveal area of diffuse diabetic macular edema group and perifoveal area in focal diabetic macular edema group. The outcome of mfERG presents a good consistency with FFA findings in the patients with diabetic macular edema.