ABSTRACT
Objective:To observe the relationship between dynamic blood pressure variability (BPV) and left ventric‐ular diastolic function in patients with essential hypertension (EH) .Methods :A total of 140 newly diagnosed EH pa‐tients were selected .According to total coefficient of variation (CV) of 24h systolic blood pressure BPV ,they were divided into high CV group (n=70 ,CV>12.16% ) and low CV group (n=70 ,CV≤12.16% ) .Another 70 healthy subjects with corresponding gender and age were enrolled as healthy control group simultaneously .Echocardiography was used to measure mitral early diastolic peak flow velocity (E) ,late diastolic peak flow velocity (A) and decelera‐tion time of E peak (DT);meanwhile ,tissue Doppler mode was used to record early diastolic peak velocity (Em) and late diastolic peak velocity (Am) .All above indexes were compared among all groups .Results:Compared with healthy control group ,BPV significantly rose in EH patients (P<0.05 or < 0.01) .All BPV indexes in high CV group were significantly higher than those of low CV group except daytime mean diastolic blood pressure variability (dDBP‐BPV) and nighttime mean diastolic blood pressure variability (nDBP‐BPV) , P<0.05 all .Compared with healthy control group ,there were significant reductions in E and Em/Am ,and significant rise in DT and E/Em in EH patients ,P<0.05 or <0.01 ;compared with low CV group ,there was significant rise in E/Em [(10.32 ± 3.20) vs .(14.22 ± 2.20) ,P=0.033] in high CV group .Conclusion:Left ventricular diastolic dysfunction is more severe in hypertensive patients with higher dynamic blood pressure variability .
ABSTRACT
Objective To employ Borrelia burgdorferi( B. burgdorferi) , a culturable and genetical-ly transformable spirochete, as a surrogate system to study Treponema pallidum ( T. pallidum) gene function. Methods Bioinformatic analysis revealed that the T. pallidum gene tp0111 encodes the putative sigma factor RpoN. We constructed a B. burgdorferi shuttle vector harboring tp0111. The shuttle vector was then trans-formed into the B. burgdorferi rpoN mutant strain. The phenotype of the resulting B. burgdorferi strain was then determined. Results We successfully constructed the B. burgdorferi rpoN mutant carrying the T. palli-dum gene tp0111. We found that tp0111 could partially complement the B. burgdorferi rpoN mutant. Con-clusion This work provides the first experimental evidence showing that tp0111 is the rpoN gene of T. palli-dum. It also demonstrates that B. burgdorferi can be used as a surrogate system for studying T. pallidum gene function.
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ObjectiveTo compare the correlation and agreement of international normalized ratio (INR) measured by INRatio coagulometer and standard laboratory venous blood measurement in order to judge the clinical application value of measuring INR by INRatio coagulometer.MethodsOne hundred who received warfarin were chosen randomly.Venous blood and finger capillary blood were taken simultaneously for measurement of INR by laboratory coagulation analyzer SYSMEX CA-7000 and INRatio coagulometer respectively.The correlation and agreement of INR results tested by the two methods were analyzed.Results When INR ≤5,there was a good correlation between INRatio coagulometer and laboratory coagulation analyzer SYSMEX CA-7000 (r =0.898,P =0.000).The mean bias of the two methods was 0.36 and INR measured by INRatio coagulometer were higher than those tested by laboratory coagulation analyzer SYSMEX CA-7000.By Bland-Altman,it showed a good agreement for 91.2％ (62/68) of the difference INR located 95％ the limited of agreement when the mean INR 1.60 - 3.50,and a bad agreement for only 50.0％(1/2) of the difference INR located 95％ the limited of agreement when the mean INR ＞ 3.50.ConclusionsIn the therapeutic range,INR measured by INRatio coagulometer shows a good correlation and agreement with INR measured by the established laboratory method.INRatio coagulometer can be used to monitor INR in the patients received oral anticoagulant therapy.