Objective To observe the function of recombinant human tissue factor pathway inhibitor1(rTFPI-1)in acute myocardial infarction in rabbit. Method Forty New Zealand White rabbits were subjected to coronary artery occlusion for 120 min and followed by reperfusion for 60 min,then they were ranlow dose rTFPI-1 group(n=10/group).The extent of ischemic area and the extent of myocardial infarction area were measured by Evan's blue stain and TTC stain,respectively.The degrees of infarction severity and ischemic severity were expressed as the ratios of the total left ventrieular wall area.The degrees of infarction severity and ischemic severity in different groups were compared by using one-way ANOVA and then followed by LSD procedure.Results The degree of infarction severity in the larger dose rTFPI-1 group was significantly lessened than that in low dose RTFPI-1 group and control group(P<0.001),and than that in modcrate dose rTFPI-1 group as well(P<0.05).The degree of infarction severity in the moderate dose rTFPI1 group was significantly lessened than that in low dose rTFPI-1 group and control group(P<0.001).There was no significant difference in degree of infarction severity between low dose rTFPI-1 group and control group(P>0.05).Conclusions Human rTFPI-1 might decrease myocardial infarction severity and save the survival myocardial tissue.

Objective To observe the effects of different doses of human recombinant tissue factor pathway inhibitor-1 (TFPI-1) on no-reflow (NR) phenomenon in rabbit.Methods Fifty-two New Zealand white rabbits were subjected to coronary artery occlusion for 120 min and followed by reperfusion for 60 min,and then were randomly (random number) assigned into four groups:control group,large,moderate and low doses TFPI-1 groups ( 1000 ng/kg,100 ng/kg,10 ng/kg bolus and thenl0 ng/kg,1 ng/kg and 0.1 ng/kg per minute infusion for maintenance,each group n =13).The no-reflow area (NA) and ischemic area (IA) was measured by thioflavin S and Evan's blue.The NR severity was expressed by NA/IA.The difference in NR severity was compared between groups.The thrombi and myocardial injury were observed under light microscope.The infarction and NR severity in different groups were compared by using one-way ANOVA followed by LSD procedure.Results There were no significant differences in IA and body weight among four groups (P＞0.05).NR severity in the large,moderate,low doses TFPI-1 groups and control group were (0.210 ±0.061 ),(0.389 +0.110),(0.478 ±0.077) and (0.536 ±0.061 ),respectively.NR severity in the large dose TFPI-1 group was slightest among the four groups (P ＜0.01 ).NR severity in the moderate dose TFPI-1 group was significantly decreased than that in control group ( P ＜ 0.01 ) and in low dose TFPI-1 group (P ＜0.05 ).There was no significant difference in NR severity between the low dose TFPI-1 group and control group ( P ＞ 0.05 ).There was less thrombus formation and lower grade myocardial injury found in the large dose TFPI-1 group. Conclusion Human rTFPI-1 might lessen NR severity in rabbit in dose-dependent,suggesting the option on human rTFPI-1 for treatment of NR phenomenon.

Objective To analyze the current situation of traditional risk factors in acute myocardial infarction (AMI) patients with different age,and to explore the impact of different risk factors on AMI.Methods The personal clinical characteristics of 682 hospitalized AMI patients in CCU were recorded from October 2003 to October 2010 with a retrospective cohort study.The effect of smoking,hyperlipidemia,diabetes and hypertension on AMI was observed.Results Six hundred and thirteen patients were enrolled in the end,43 cases in young group,216 cases in middle age group,234 cases in older age group,120cases in old-old age group.(1) Compared with that in middle age group,older age group and old-old age group,the ratio of smoking and hyperlipidemia in young group was significantly higher(P ＜ 0.0125 or ＜ 0.001).The ratio of smoking in middle age group was significantly higher than that in older age group(P ＜ 0.001),and the ratio of hyperlipidemia between two groups had no significant difference (P ＞ 0.0125).The ratio of smoking and hyperlipidemia was significantly higher in middle age group compared with that in old-old age group(P＜0.001 or ＜ 0.0125).(2) The average age in smoking patients with AMI was (56.84 ± 13.00) years,which was significantly younger than that in non-smoking patients[(74.29 ± 10.57) years] (P ＜ 0.01).The average age in patients with hyperlipidemia suffering from AMI was significantly younger than that in patients with normal lipid level patients [(62.92 ± 15.04) years vs.(68.63 ± 13.93) years] (P ＜ 0.01).Conclusions Smoking and hyperlipidemia,especially smoking plays an important role in inducing AMI in young and middle age.Smoking cessation and lipid-lowering therapy is vital for reducing the occurrence of AMI in young and middle age.

BACKGROUND:By using ultrasound examination, renal function was conventionally assessed through measuring the blood flow parameters of large renal arteries in all levels and the rate of the color flow area in arter ies on the cross section of kidneys, in which method great errors have been induced.OBJECTIVE: This study was designed to assess the renal blood perfusion with use of the image analysis software package in the color Doppler system.DESIGN: It was an experimental study on animals.SETTING: This study was conducted in the Department of Functional Examination of Guangzhou First People' s Hospital.MATERIALS: The study had been accomplished at the Animal Laboratory of the General Hospital of Guangzhou Military Area Command of Chinese PLA from January 1999 to Aprial 2000. Eight healthy New Zealand rabbits were selected, 4 females and 4 males and weighing 2.5-3.5 kg.Sixteen kidneys of them were examined. A self-made contrast medium, with prevailing ingredient of albumin shelled and CsF8 gas-filled microbubbles,was used in this study.METHODS: After intravenous bolus injection of a fluorocarbon contrast medium, a color Doppler energy mapping, a color flow mapping and a power Doppler harmonic imaging of renal blood flow were collected successively and a time-density curve were created with system's standard software.MAIN OUTCOME MEASURES: The time-density curve of renal blood perfusion with contrast-enhanced color Doppler was a main outcome measurement in the study.RESULTS: All of the 8 rabbits entered the analysis procedure. The contrast-enhanced time-density curve of renal blood perfusion was singlepeaked, with a rapid incline and a subsequent slow decline. Quantitative analysis of interested sections could be performed by replaying the corresponding contrast-enhanced color Doppler images at a certain time after injection.CONCLUSION: The time-density curve of color flow mapping and color Doppler energy mapping is capable of reflecting the features of renal blood perfusion effectively. It can display not only the general renal perfusion but also the segmental regions with low perfusion, and thus to delineate the functional lesions in the kidneys.

AIM　To study the chemical constituents of the seeds from Artabotrys hexapetalus (L.f.) Bhandari (Annonaceae). METHODS　Various chromatographic techniques were used to separate and purify the constituents. Their structures were elucidated on the physico-chemical properties and spectral data. RESULTS Eight compounds were isolated from the seeds of A.hexapetalus. They were identified as four neolignans: isoamericanin A (1), isoamericanol A (2), americanin B (3) and artabotrycinol (4), a semiterpenoid: (R)-artabotriol (5) and others: palmitic acid (6), β-sitosterol (7) and daucosterol (8). CONCLUSION Artabotrycinol (4) and (R)-artabotriol (5) are new compounds. Three other neolignans were isolated from this plant for the first time.

Objective To explore the relationship of Helicobacter pylori (Hp) infection and carotid plaques in patients with coronary heart disease and analyze the related factors of carotid plaques.Methods This study enrolled 209 patients.13C-urea breath test (13C-UBT) was used to assess Hp infection.Based on the results of 13C-UBT,patients were divided into infection-positive group (101 patients) and infection-negative group (108 patients).The incidence of carotid plaques was detected by color Doppler,and plasma homocysteine (Hcy),total cholesterol (TC),low density lipoprotein cholesterol (LDL-C),fibrinogen (Fbg),high sensitivity C reactive protein (hs-CRP) were measured and compared.Results The incidence of carotid plaques in infection-positive group(69.31％,70/101) was higher than that in infection-negative group (55.56％,60/108),and there was significant difference (P =0.040).There was significant difference in hs-CRP between infection-positive group and infection-negative group [(3.91 ± 1.91) mg/L vs.(2.65 ± 1.15)mg/L] (P =0.041).There were no significant difference in Hcy,TC,LDL-C,Fbg between infection-positive group and infection-negative group (P ＞ 0.05).Logistic regression analysis showed that Hp infection was correlated with carotid plaques in patients with coronary heart disease.The severity of Hp infection had no significant effect on the incidence of carotid plaques.Conclusions Hp infection-positive patients with coronary heart disease may have a higher incidence of carotid plaque,regardless of Hcy,LDL-C,Fbg and TC level.This study shows that Hp is correlated with carotid plaque.The severity of Hp infection has no significant effect on the incidence of carotid plaque.

Objective To evaluate the influence of smoking on carotid intima-media thickness (IMT) in patients with hypertension.Methods Two hundred and three patients with hypertension were consecutively enrolled with smoking or without smoking.They were divided into two groups:smoking group (84 patients) and no smoking group (119 patients).Carotid IMT was measured.Results Carotid in smoking group was (0.1118 ± 0.0234) cm,which was thickened compared with that in no smoking group [(0.098 ± 0.0249) cm] (P ＜ 0.01).Conclusions Smoking has significant influence on carotid IMT in patients with hypertension.

Objective To explore the prevalence and clinical characteristics of food allergy in bronchial asth-matic children less than 14 years old in China. Methods A case - controlled study was designed. The questionnaires were given to children,who were diagnosed to be asthmatic during the national epidemiological survey of asthma in chil-dren in 31 cities from September 2009 to August 2010. Non - asthmatic children,matched with the cases in age and gender,were selected during the same survey as control subjects if they were matched with the cases in age and sex. In-formation regarding the food allergen and symptom of food - induced anaphylaxis was analyzed. The difference in food allergy was compared between children with or without bronchial asthma. Results As a result,9235 asthmatic children and 11391 control subjects were enrolled in the case - control study. There were 14. 66％(1354 / 9235 cases)of the asthmatic children who had food allergy,compared to 3. 99％(455 / 11391 cases)of the non - asthmatics children, and the findings showed a significant difference (χ2 = 725. 25,P < 0. 001). The most common food allergens were fish and shrimp in both groups,and the difference was not significant [44. 09％ (597 / 1354 cases)vs. 42. 20％ (192 / 455 cases),χ2 = 0. 50,P > 0. 05]. The rate of peanut allergy was 4. 58％ (62 / 1354 cases)and 1. 54％ (7 / 455 cases) (χ2 = 8. 58,P < 0. 05),respectively. And the rates of fruit allergy in the asthmatic group and the non - asthmatic group were 14. 03％(190 / 1354 cases)and 27. 69％(126 / 455 cases)(χ2 = 44. 01,P < 0. 05),respectively. Cutaneous and nasal symptoms were common clinical manifestations. The rates of rash,pruritus,and swelling sympions were 47. 27％(640 / 1354 cases)and 61. 32％(279 / 455 cases)(χ2 = 26. 90,P < 0. 001),respectively for asthmatic group and non -asthmatic group. Rates of nasal symptoms were 17. 13％(232 / 1354 cases)and 10. 55％(48 / 455 cases)(χ2 = 11. 29, P = 0. 001),respectively in the asthmatic group and the non - asthmatic groups. Respiratory symptoms,such as cough and wheezing,were 25. 33％(343 / 1354 cases)and 5. 49％(25 / 455 cases)(χ2 = 80. 72,P < 0. 001)in 2 groups. Twenty cases of 1354 asthmatic children had severe food allergy,while such severe conditions occurred only 1 child without asthma (455 cases)occurred severe condition (1. 48％ vs. 0. 22％,χ2 = 4. 96,P < 0. 05). Conclusion The-rate of food allergen sensitization is highly prevalent in the children with asthma. Compared to those without asthma, and their types of food allergen and clinical symptoms are different from the latter.