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Objective To observe the elimination of oxygen free radicals in rat myocardium mitochondria by diazoxide(DE) during different duration of hypothermic preservation.Methods The Langendorff model of isolated rat heart was used.After stored in 4℃ Celsior solution or Celsior solution containing 30 ?mol/L of DE for different duration(0,3,6,9 or 12h),the activity of the superoxide dismutase(SOD) and the content of maleic dialdehyde(MDA) in heart mitochondrial were measured.The myocardial mitochondria ultrastructure was also evaluated.Results(1) After hypothermic preservation,the activity of SOD was decreased,the content of MDA was increased.The ultrastructure of myocardium mitochondria was also destrored in preserved rat hearts in a time-dependent manner.(2) Compared with the corresponding Celsior solution hypothermic preservation groups,DE significantly improved the above indexes(SOD,MDA and myocardial mitochondria ultrastructure).Conclusion Diazoxide can protect rat myocardial mitochondria from long-term hypothermic preservation injury by direct elimination of oxygen free radials and enhancement of the activity of SOD.

Objective To investigate the effect and clinical efficacy of pranoprofen eye drops on lysozyme, EGF and LF levels in type 2 diabetic patients with dry eye syndrome.Methods70 Type 2 diabetes patients with dry eye from department of ophthalmology, Yuyao People's Hospital of Zhejiang Province from September 2013 to May 2015.They were selected and randomly divided into the treatment group and the control group with 35 cases in each group.The control group were treated by artificial tears eye drops 0.1mL/time, 6 times/day treatment.The treatment group were treated on the base of the control group with pranoprofen eye drops 0.15mL/eye drops, 4 times/day treatment.2 groups were 14 days for 1 courses of treatment, a total of 2 courses of treatment.The tear break-up time, basal lacrimal secretion, corneal fluorescein staining positive rate and clinical efficacy were compared between two groups before and after treatment.ResultsWith the total effective rate in the treatment group,was higher than the control group(P<0.05).Compared with before treatment, the tear break-up time prolonged, basal lacrimal secretion, tear lysozyme, EGF and LF levels were higher(P<0.05), the positive reaction rate of corneal fluorescence staining was lower(P<0.05).Compared with the control group after treatment, the tear break-up time prolonged, basal lacrimal secretion, tear lysozyme, EGF and LF levels were higher(P<0.05), the positive reaction rate of corneal fluorescence staining was lower(P<0.05).ConclusionThe clinical efficacy of pranoprofen eye drops in type 2 diabetic patients with dry eye syndromeis good.It is speculated that the mechanism and tear break-up time prolonged, basal lacrimal secretion increase and lysozyme, epidermal growth factor(EGF)and the level of LF increased.

Objective To investigate clinical effect of breviscapine combined with nerve growth factor in treatment of ischemic optic neuropathy . Methods 80 patients with ischemic optic neuropathy from March 2014 to March 2016 in our hospital were selected and divided into the control group and observation group, 40 cases in each group.The control group was treated with nerve growth factor, hip injection 30ug, one times a day, while the observation group was treated with breviscapine combined with nerve growth factor, 80 mg breviscapine added to 500 mL glucose intravenous infusion, one times a day.Then the changes of visual acuity, visual field loss difference (LV), the average damage of vision (MD), the average vision light sensitivity ( MS ) , adverse reactions, curative effect were compared between two groups.Results After treatment, the total effective rate in the observation group was significantly higher than the control group, the difference was statistically significant (P<0.05), the visual acuity of the observation group was significantly higher than that of the control group, the difference was statistically significant (P<0.05), LV, MD was significantly lower than the control group, the difference was statistically significant (P<0.05), MS was significantly higher than the control group, the difference was statistically significant (P<0.05).There was no difference in adverse reactions between the two groups.Conclusion Breviscapine combined with nerve growth factor in the treatment of ischemic optic neuropathy can improve nerve function of patients , improve the therapeutic effect.

Objective To measure the alteration of early diastolic flow propagation velocity (V P) of left ventricle in patients with hypertrophic cardiomyopathy(HCM),and to investigate its clinical value.Methods Using color M-mode Doppler echocardiography,V P was measured in 52 patients with HCM and 30 healthy volunteers.Results Compared with normal control,V P in patients with HCM was decreased significantly (t= 8.42,P

group A by turns. (3) The concentrations of plasma endothelin-1 (ET-1) and angiotensin converting enzyme (ACE) were significantly higher in group B than that in group A. However, the ET-1 and ACE were significantly lower in group C than those in group B. (4) The ET-1 and ACE had a significant positive correlation with R/L+S, mPAP and PI, respectively. The multivariate linear regression analysis revealed that ET-1 and ACE were major factor affecting PI. CONCLUSION: The pulmonary vascular and myocardial structural remodeling are one of the pathogenesis accompanied with excessive cell proliferation in hypoxic pulmonary hypertension (PH). Cilazapril effectively prevents and treats the hypoxic PH by inhibiting cell proliferation and structural remodeling of pulmonary circulation, as induced by ET-1 and ACE.

Objective To study the effect of hepatocyte growth factor (HGF) on hepatocytes after partial hepatectomy in chronic liver injury rats.Methods 30% hepatectomy was performed in rats with cirrhosis induced by CCL 4 and alcohol,and subcutaneously injection of cow HGF into intraabdomen was done with different dosages.Results Small dose (0.16mg?100g -1d -1)of HGF did not stimulate liver regeneration or enhance liver function after partial hepatectomy in cirrhotic rats.Large dose (1.3mg?100g -1d -1) of HGF stimulated liver regeneration and enhanced liver function after partial hepatectomy in cirrhotic rats(P

Objective To evaluate the feasibility of real-time triplane strain rate imaging for the quantitative assessment of left atrial function in normal subjects. Methods Totally 40 healthy volunteers were enrolled. Left atrial expansion index (LAEI), left atrial passive emptying fraction (LAPEF) and left atrial active emptying fraction (LAAEF) were measured using real-time triplane volume analysis. Mean systolic peak strain rate (MSRs), mean early diastolic peak strain rate (MSRe) and mean late diastolic peak strain rate (MSRa) were measured using real-time triplane strain rate imaging. The results were compared respectively. Results MSRs correlated positively with LAEI (r=0.61, P<0.01). MSRe correlated inversely with LAPEF (r=-0.67, P<0.01), so did MSRa with LAAEF (r=-0.78, P<0.01). Conclusion Real-time triplane strain rate imaging is feasible for the quantification of left atrial function in normal subjects.

OBJECTIVE:To investigate the safety of induction chemotherapy and the implementation method of consolidation radiotherapy in young children with high-risk Hodgkin lymphoma(HL),by evaluating the effects of intensive induction chemother-apy on consolidation radiotherapy. METHODS:Six pediatric patients with high-risk HL received low-dose involved field radiation therapy (IFRT) via volumetric modulated arc therapy (VMAT) following 6 cycles of intensive chemotherapy [Ara-C/VP16 (cyto-sine arabinoside+etoposide),ABVE-PC(adriamycin+bleomycin+leurocristine+etoposide+metacortandracin+cyclophosphamide)and CHOP(cyclophosphamide+leurocristine+adriamycin+ prednisone)in turn]. Therapeutic efficacy and toxic effects were evaluated af-ter treatment. RESULTS:Intensive induction chemotherapy and consolidation radiotherapy were acceptable by young children,and mild acute or subacute toxic reaction were observed. Intensive induction chemotherapy didn’t affect toxic effects of consolidation ra-diotherapy. In this regimen,the cumulative doses of bleomycin and adriamycin were 20 mg/m2 and 270 mg/m2,respectively. VMAT optimized plan to ensure that the dose that involved organs received was safe. In the patient with mediastional radiation therapy,the mean lung and heart doses were 525.6 cGy and 503.9 cGy,respectively. CONCLUSIONS:It is safe to give high-risk HL young children 6 cycles of intensive induction chemotherapy(Ara-C/VP16,ABVE-PC and CHOP in turn)before radiotherapy. It is feasi-ble to conduct IFRT with 18-20 Gy and an additional 20-25 Gy boost,1.5-1.8 Gy/fraction. VMAT deserves to be advised.

Objective To evaluate the regional long-axis systolic function of left ventricular in patients with coronary artery disease and healthy subjects by two-dimensional strain rate imaging (2D-SRI). Methods During October 2011 to August 2012 , 53 inpatients with coronary artery disease in the department cardiology from the Afifliated Hospital of Medical College, Qingdao University were enrolled. Twenty-nine patients with anterior wall infarction induced by left front-descending coronary artery disease (group LCA) and twenty-four with interior wall infarction induced by right coronary artery disease (group RCA) proved by coronary angiography and echocardiography were enrolled into the study and thirty healthy volunteers in the control group. High frame rate two-dimensional dynamic images were recorded in apical four-chamber view and two-chamber view of the left ventricle. Using two-dimensional strain software, peak systolic longitudinal strain rate (PSRs) of interventricular septum, anterior wall, lateral wall and interior wall of left ventricle were measured. All data of 3 groups were analyzed using One-Way analysis of variance, and LSD-q test used to compare the 2 groups. Results The PSRs were (4.61±0.60) s-1, (5.18±0.87) s-1, (5.60±0.70) s-1, (6.05±0.74) s-1 from interventricular septum, anterior wall, lateral wall to interior wall in the control group. There were signiifcant differences among the groups (F=20.95, P=0.00), and there were signiifcant gradient changes from intervetrivular septum, anterior wall, lateral wall to interior wall in the control group. The PSRs were (4.31±0.85) s-1, (1.96±0.93) s-1, (5.54±0.83) s-1, (5.93±0.80) s-1 from interventricular septum, anterior wall, lateral wall to interior wall in the LCA group respectively. There were signiifcant differences among the different walls (F=127.25, P=0.00), which was signiifcant lower in ischemic anterior wall than interventricular septum, lateral wall and interior wall, and the significant differences were identified in anterior wall with lateral wall and interior wall (q=22.62, 25.04, both P<0.01). The PSRs were (4.51±0.62) s-1, (4.99±1.13) s-1, (5.31±0.81) s-1, (2.84±0.85) s-1 from interventricular septum, anterior wall, lateral wall to interior wall in RCA group respectively. There were signiifcant differences among the different walls (F=38.12, P=0.00), which were signiifcant lower in ischemic interior wall than interventricular septum, anterior wall, and lateral wall, and the signiifcant differences were identiifed in interior wall with lateral wall and interior wall (q=13.88, 12.08, both P<0.01). Comparing the same part among 3 groups, signiifcant differences were identiifed as following:the PSRs of anterior wall in group LCA vs control group (q=20.17, P<0.01), the PSRs of interior wall in group RCA vs control group (q=19.98, P<0.01). Conclusions Longitudinal systolic function changes of left ventricular regional myocardium in patients with coronary artery disease and healthy subjects could be accurately analyzed by 2D-SRI. The early changes in ischemic myocardium would be assessed quickly in patients with coronary artery disease using 2D-SRI.