Publications by authors named "Mingzhong Zhao"

Objective: The effect of atrial fibrillation (AF) patterns on outcomes remains controversial. This study aims to evaluate the influence of AF type on the risk of cardiocerebrovascular events after left atrial appendage closure (LAAC) at long-term follow-up.

Methods: AF was categorized as paroxysmal AF (PAF) and non-PAF (NPAF).

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Background: Nitrogen use efficiency (NUE) is closely related to crop yield and nitrogen fertilizer application rate. Although NUE is susceptible to environments, quantitative trait nucleotides (QTNs) for NUE in wheat germplasm populations have been rarely reported in genome-wide associated study.

Results: In this study, 244 wheat accessions were phenotyped by three NUE-related traits in three environments and genotyped by 203,224 SNPs.

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Biofilm formation is one of the most important factors causing drug resistance of Helicobacter pylori. Therefore, it is necessary to explore the mechanism underlying the biofilm formation and its eradication methods. The outer membrane proteins (OMPs) play important roles in the formation of bacterial biofilms and are considered the essential targets for new drug discovery.

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Background: Helicobacter pylori has become increasingly resistant to all commonly used clinical antibiotics. Therefore, new anti-H. pylori drugs need to be identified.

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Objectives: To evaluate the influence of congestive heart failure (CHF) on safety and efficacy of left atrial appendage closure (LAAC) in non-valvular atrial fibrillation (NVAF) patients.

Methods: A total of 401 patients who consecutively underwent LAAC with Watchman and LAmbre devices were divided into CHF (85 cases) and non-CHF (316 cases) groups. Comparisons between groups were performed against data.

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Background: Higher CHADS-VASc score is associated with an increased risk of adverse cardio-cerebrovascular events in patients with non-valvular atrial fibrillation (NVAF), regardless of oral anticoagulation (OAC) status. However, whether this association still exists in patients undergoing left atrial appendage closure (LAAC) is unknown. We evaluated the impact of CHADS-VASc score on LAAC efficacy and outcomes.

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Patients with non-valvular atrial fibrillation (NVAF) and previous stroke are at significantly higher risk of stroke recurrence. Data on the efficacy of left atrial appendage closure (LAAC) on these patients is limited. The aim of this study was to investigate the differences of LAAC efficacy on long-term cardio- and cerebrovascular outcomes in NVAF patients with vs.

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Objectives: To investigate safety and effectiveness of left atrial appendage closure (LAAC) in atrial fibrillation patients with prior major bleeding.

Methods: A total of 377 consecutive patients scheduled for LAAC with Watchman device were divided into bleeding group (n = 137) and non-bleeding group (n = 240). Data were compared between groups.

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Female patients affected by non-valvular atrial fibrillation (NVAF) have a higher risk of stroke compared with male patients. Left atrial appendage (LAA) closure has been demonstrated as a reasonable alternative to warfarin therapy for stroke prevention in patients with NVAF. However, the impact of sex-related differences on outcomes in patients undergoing LAA closure (LAAC) remains unclear.

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Percutaneous left atrial appendage closure (LAAC) may decrease risks of stroke and bleeding in elderly patients with non-valvular atrial fibrillation (NVAF), but it is still lacking of evidence. The present study aimed at evaluating the efficacy and safety of LAAC in patients with NVAF over 75 years. 351 patients with NVAF who underwent LAAC were retrospectively analyzed on the LAAC procedure characteristics and the clinical follow-up according to age (age ≥ 75 years or < 75 years).

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Zhengmai 7698 is an elite winter wheat variety widely cultivated in the Southern regions of the Yellow-Huai River Valley of China. Here, we report the molecular markers used for breeding Zhengmai 7698 and the genome composition of this cultivar revealed using genome-wide SNPs. A total of 26 DNA markers derived from the genes controlling gluten protein quality, grain hardness, flour color, disease resistance, or pre-harvesting sprouting resistance were used during breeding.

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In this paper, two transgenic wheat lines, PC27 and PC51, containing the maize PEPC gene and its wild-type (WT) were used as experimental material to study the effects of high temperature on their photosynthetic physiological characteristics and metabolome. The results showed that transgenic wheat lines had higher photosynthetic rate (P ) than WT under non-stress treatment (NT) and high temperature stress treatment (HT), and more significantly under HT. The change trends of F /F , Ф , and q were similar to P , whereas that of non-photochemical quenching (NPQ) was the opposite.

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The structure of the title compound, C20H21NO6S, is of inter-est with respect to its anti-bacterial properties. The oxazolidine ring makes dihedral angles of 79.63 (14) and 56.

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Objective: To evaluate the value of measuring ankle brachial index (ABI) for diagnosing peripheral arterial disease(PAD) compared with conventional digital subtraction angiography (DSA) as the reference standard.

Methods: A total of 383 consecutive inpatients (245 male, mean age 64.1 +/- 11.

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Objective: To explore the role of inflammatory factors (interleukin-6, tumor necrosis factor alpha, high sensitive C reactive protein) in the pathogenesis of anxiety after acute coronary syndrome (ACS) by investigating the serum levels of interleukin-6 (IL-6), tumor necrosis factor alpha (TNFalpha) and high sensitive C reactive protein (hsCRP).

Methods: Serum IL-6, TNFalpha and hsCRP levels were measured in 105 ACS patients within 7 days after onset of the event. Symptoms of anxiety were evaluated by self-reporting standardized questionnaire, using a validated Chinese version of Hospital Anxiety and Depression Scale (HADS-A)-Anxiety Subscale (7 items) within 72 hours of the event.

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Background: The aim of the present study was to prospectively evaluate the sensitivity, specificity, positive and negative likelihood ratios (LR+, LR-) of the ankle - brachial index (ABI), using conventional digital subtraction angiography (DSA) as the reference standard, in the assessment of lower extremity arteries, and to research the threshold value of the ABI in diagnosing periphery arterial disease (PAD), as well as the relationship between the ABI value and stenosis in the artery of the lower extremity in Chinese high-risk cardiovascular patients.

Methods And Results: A total of 298 consecutive patients (199 men, 99 women, 64.9+/-11.

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Objective: To investigate the relationship between thrombolysis in myocardial infarction (TIMI) risk score and efficacy of different treatment strategies in patients with non-ST-segment elevation acute coronary syndromes (NSTE-ACS).

Methods: From Oct. 2001 to Oct.

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Background: Peripheral arterial disease (PAD) is an important manifestation of systemic atherosclerosis and is associated with elevated cardiovascular morbidity and mortality. The aim of the present study was to evaluate the use of antiplatelet agents, statins and angiotensin-converting enzyme inhibitors (ACEI) in Chinese high-risk cardiovascular (CV) patients with PAD, with an emphasis on the need for aggressive medical management of all atherosclerotic manifestations.

Methods And Results: Medical records from 5,263 Chinese patients at high risk of CV were evaluated for the use of antiplatelet agents, statins and ACEI in patients with and without PAD.

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Objective: To investigate the effect of early invasive strategy on early and late outcomes in high-risk patients with non-ST-segment elevation acute coronary syndromes (ACS).

Methods: Five hundred and forty-five patients of ACS without ST-segment elevation were randomly assigned to an early conservative strategy (284 cases) or early invasive strategy group (261 cases), who were enrolled consecutively from Oct., 2001 to Oct.

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Objective: To investigate the changes of electrocardiogram (ECG) and impact of early invasive strategy in patients with acute coronary syndrome (ACS) without ST-segment elevation.

Methods: Five hundred and forty-five consecutive ACS patients without ST-segment elevation were randomly assigned to early conservative treatment group and early invasive treatment group. The combined cardiovascular events, including cardiac death, nonfatal myocardial infarction, nonfatal heart failure, and re-hospitalization due to recurrent ischemia angina, within 30 days and 6 months were analyzed and the effects of varied ECG changes and different intervention strategies on outcomes of patients were evaluated.

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Objective: To investigate the predictive value of positive troponin I (TnI) on early prognosis in patients with non-ST-segment elevation acute coronary syndrome (NSTE ACS), and to evaluate TnI as a predictor of risk for the combined end points of cardiac events in NSTE ACS.

Methods: 545 patients with non-ST-elevation acute coronary syndrome were double-blind randomly enrolled in two groups of study, receiving invasive or noninvasive treatment, respectively. At admission, all patients' baseline levels of TnI and CK-MB were determined and related to outcome at 30th day and 6th month of follow-up.

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Objective: To investigate the risk factors and the values of early invasive intervention in patients with acute coronary syndromes (ACS) without ST-segment elevation.

Methods: Five hundred and forty-five patients of ACS without ST-segment elevation were randomly assigned to an early conservative strategy or early invasive strategy who had been admitted to hospitals consecutively from Oct. 2001 to Oct.

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Objective: To assess the effects of gender on heart rate adjustment of ST segment depression (ST/HR) for identifying coronary arteriosclerotic disease.

Methods: One hundred and seventy three patients with suspected coronary disease (CAD) were referred for a routine treadmill exercise electrocardiogram and subsequently they underwent selective coronary angiography within 3 weeks. The magnitude of ST segment depression, ST/HR slope and calculated ST/HR index are performed by a computerized ECG system; exercise was performed according to the cornell protocol.

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