Rapid Identification of Gastrodiae Rhizoma with Different Sulfur Fumigation Levels Based on Ultra-fast Gas Phase Electronic Nose / 中国实验方剂学杂志

ObjectiveIn order to find a fast odor-based method for the identification of sulfur fumigated Gastrodiae Rhizoma， an ultra-fast gas phase electronic nose technology was used to identify the odors of different degrees of sulfur fumigated Gastrodiae Rhizoma decoction pieces. MethodHeracles NEO ultra-fast gas phase electronic nose was employed to collect gas chromatograms of unsulfured and sulfured with different degrees of Gastrodiae Rhizoma decoction pieces， gas chromatograms were performed under programmed temperature （initial temperature of 40 ℃， 0.2 ℃·s-1 to 60 ℃， and then 4 ℃·s-1 to 250 ℃）， the sample volume was 5 mL， the incubation temperature was 65 ℃ and incubation time was 35 min. Kovats retention index and the AroChemBase database were used for qualitative analysis， and stoichiometric analysis was performed on this basis. Principal component analysis （PCA）， discriminant factor analysis （DFA） and partial least squares-discriminant analysis （PLS-DA） models were established to identify the Gastrodiae Rhizoma decoction pieces with different degrees of sulfur fumigation. ResultAccording to the comparative analysis of AroChemBase database， there were significant differences in the odor characteristics of sulfur fumigated and non-sulfur fumigated Gastrodiae Rhizoma， cyclopentane， acetone and heptane might be the odor components to distinguish the degree of sulfur fumigation in Gastrodiae Rhizoma decoction pieces. The identification index of PCA model was 81， the accumulative discriminant index of the discriminating factors was 92.09% in DFA model， the supervisory model interpretation rate of PLS-DA model was 0.963 and the predictive ability parameter was 0.956， indicating that PCA， DFA and PLS-DA models could well distinguish Gastrodiae Rhizoma decoction pieces with different sulfur fumigation degrees. ConclusionHeracles NEO ultra-fast gas phase electronic nose can be used as a rapid method to identify and distinguish Gastrodiae Rhizoma decoction pieces with different levels of sulfur fumigation. Meanwhile， it can provide a rapid， simple and green method and technology for identification of traditional Chinese medicine decoction pieces by sulfur fumigation.

Effect of Ivabradine Prolonging the Cardiac Action Potential Duration With its Proarrhythmic Action in Experimental Rabbitin vitro / 中国循环杂志

Objective: To observe the effect of ivabradine (IVA) on atrial and ventricular monophasic action potential duration (MAPD) and its proarrhythmic action at presence of sea anemone toxin-II (ATX-II) in isolated rabbit heart modelin vitro. Methods: The perfusion of isolated heart from female New Zealand white rabbit was conducted by Langendorff method in vitro. Left atrial and left ventricular endo- , epi-cardial action potential were recorded when pacing with ifxed frequency of 350 ms (in correspondence with the heart rate of 171 times/min) to observe the effect of IVA alone and ATX-II (3 nmol/L) with IVA on MAPD90. In addition, to observe the action of IVA alone and ATX-II with IVA on proarrhythmia when IVA reducing the heart rate to autonomous cardiac rhythm as (156±10) times/min. Results: IVA at (3-10) μmol/L prolonged atrial and ventricular endo- , epi-cardial MAPD90 by (15.9 ± 2.0) ms, (31.5 ± 4.0) ms and (23.9 ± 3.0) ms (n=6,P<0.01), respectively. ATX-II at 3 nmol/L prolonged atrial and ventricular MAPD90 by (36.5 ± 5.0)ms and (19.9 ± 3.0) ms, (19.5 ± 4.0) ms (n=6,P<0.01) respectively. With ATX-II treatment, IVA at (6-10) μmol/L decreased atrial MAPD90 by (14.4 ± 4.0) ms (n=6,P<0.01), it induced atrial arrhythmia. With 3 nmol/L of ATX-II treated ventricle, IVA at (3-10) μmol/L obviously prolonged endo- and epi-cardial MAPD90 by (36.2 ± 7.0) ms and (27.5 ± 5.0) ms(n=6,P<0.01), respectively. IVA didn’t increase ventricular beat-to-beat variability and transmural dispersion of MAPD90 no matter with or without ATX-II treatment, no ventricular arrhythmia occurred. Conclusion: IVA prolongs both atrial and ventricular MAPD, with increased late sodium current, IVA may induce atrial arrhythmia but not ventricular arrhythmia in experimental rabbits in vitro.

Risk stratification and significance of adult diabetic patients with cardiovascular disease / 中国综合临床

Objective To explore the related risk factors between adults with diabetes and cardiovascular disease risk.Methods Five hundred and fifty-seven patients whose age were over 20 years with diabetes mellitus were hospitalized in the First People's Hospital of Shangqiu from Jan.2008 to Dec.2013.According to the major risk factors of cardiovascular risk assessment,Framingham cardiac risk score was use to assess and stratify patients;and then graded as low risk group(＜ 10％),intermediate risk group(10％ to 20％) and the high risk group(＞ 20％).Predicted the next 10 years the probability of the risk of cardiovascular disease.Results Among 557 patients,275 cases were male and 282 cases were female,79 cases (14.18％) were type Ⅰ diabetes mellitus and 478 cases (85.82％) were type Ⅱ diabetes mellitus.Meanwhile,10 years the probability of the risk of cardiovascular disease showed that there were 103 cases of low risk group(18.5％),91 cases of intermediate risk group (16.3％),195 cases of high risk group (30.2％) and 168 cases of cardiovascular disease group who had cardiovascular disease (30.2％).(1) Characteristics of risk factors for cardiovascular disease of risk stratification:①There was high incidence of metabolic syndrome in patients with diabetes mellitus,which was up to 37.9％ even in low risk group and 60.5％ in high risk group.②The average age of high risk group was (63.5 ± 11.7) years old which was higher than the low risk group ((50.3 ± 15.4) years old).③Systolic pressure of high risk group was (143.4 ± 18.1) mmHg,higher than that of the low risk group ((125.7 ± 13.2) mmHg).④It was hard to control the blood pressure in high risk group,so as a few cases(32.3％) were up to the standard.⑤The incidence of chronic kidney disease in high risk group was 21.5％,which was significant higher than that in intermediate risk group(7.7％) and low risk group(7.8％).(2) In high risk groupn,type Ⅱ diabetes mellitus's incidence was 31.6％ which was higher than type Ⅰ diabetes mellitus's(16.4％).(3)In high risk group,the proportion of age range from 70 to 79 years old was up to 39.2％.Conclusion The overall risk of cardiovascular disease increases in patients with type Ⅱ diabetes.Metabolic factors may be the main risk.The risk assessment of diabetic patients will help to increase the intensity of treatment.

Study of relationship between fibrinogen, aldosterone and left ventricular mass index in patients with essential hypertension / 中国综合临床

Objective To investigate the relationship between plasma fibrinogen levels,aldosterion levels and left ventricular mass in patients with essential hypertension.Methods Two hundred and seventy-three patients with essential hypertension were selected as subjects.Eldow vonous blood sample were taken to measure the rennin,aldosterion,fibrinogen,D-dimer,prothrombin fragment 1 + 2 (F1 + 2),and plasminogen activator inhibitor-1 (PAI-1) concentration by radioimmunoassay.And assessed cardiac structure and function in patients ultrasound heartbeat by application of ultrasound heartbeat.According to fibrinogen levels,all patients were divided to low(A group,n =95),medium (B group,n =87) and highest (C group,n =91) groups,and comparative analyzed the general clinical data,biochemical indexes,ultrasound heartbeat graph test results of the 3 groups.Meanwhile to compare the differences between 3 groups of left ventricular mass index on the two different concentrations of plasma aldosterone average ≥ 125 pmol/L or ＜ 125 pmol/L.Results Left ventricular mass index (LVMI) increased in patients with aldosterone levels ≥ 125 pmol/L as the plasma aldosterone increased significantly.The left ventricular mass index in A,B,C group were (35.0 ± 3.1),(45.0 ± 3.6),(51.0 ± 2.9) g/m2 respectively,the difference between the 3 groups have statistical significance (F =6.65,P ＜ 0.01).Within C group,LVMI in patients with aldosterone concentration(≥ 125 pmol/L) was greater than ＜ 125 pmol/L(t =11.65,P ＜ 0.01).Meanwhile the fibrinogen concentration gradually increased in A,B and C group (2630 (2420-2790),3290 (3170-3430),4210 (3791-4580),respectively).Fibrinogen concentration in C group was higher than that in the other two groups (Z =-2.46,P ＜ 0.01).Ultrasonic heartbeat graph examination Results showed that left ventricular diameter in C group was the biggest than that in A and B groups (A,B,C group were (20.0 ± 2.3),(22.0 ± 3.9),(23.0 ± 3.1) mm/m2 respectively,F =8.16,P ＜ 0.05);The same trends were also seen regarding of interventricular septal thickness (A,B,C group were(9.2 ± 1.9),(10.1 ± 2.0),(10.5 ± 2.4) mm respectively,F =10.52,P ＜ 0.01),left ventricular posterior wall thickness (A,B,C group were (8.8 ± 1.5),(9.2 ± 1.6),(9.7 ± 1.7) mm respectively,F =10.6,P＜0.01) and left ventricular mass(A,B,C group were(37 ±9),(43 ± 11),(45 ± 13) g/m2 respectively,F =11.6,P ＜ 0.01).Conclusion Plasma fibrinogen and aldosterone concentrations are associated with left ventricular mass in patients with essential hypertension.Both them of interaction and participate to left ventricular hypertrophy commonly.