Publications by authors named "LiJiang Tang"

Background And Aims: Abdominal aortic aneurysm (AAA) is one of the most common fatal macrovascular diseases worldwide which pathogenesis is still not well clarified. In this study, we systematically investigated the alternations of endothelial cell (ECs) functions and phenotypes by single-cell RNA sequencing in angiotensin (Ang) II-induced AAA mice models.

Method And Results: According to 10 × single-cell sequencing analysis, we revealed that ECs inflammation and endothelial-mesenchymal transition (EndoMT) were involved in the progress of Ang II-induced AAA.

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Background: A recent randomised trial demonstrated fractional flow reserve (FFR) guidance for percutaneous coronary intervention (PCI) was non-inferior to intravascular ultrasound (IVUS) guidance regarding clinical outcomes, with a lower frequency of PCI.

Aims: We sought to evaluate the prognosis of FFR versus IVUS guidance for PCI of intermediate coronary artery stenosis and low lesion complexity in diabetic and non-diabetic patients.

Methods: This study is a prespecified post hoc analysis from the FLAVOUR trial.

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Background: Coronary physiology measured by fractional flow reserve (FFR) is superior to angiography for assessing the efficacy of percutaneous coronary intervention (PCI). Yet, the clinical adoption of post-PCI FFR is limited. Murray law-based quantitative flow ratio (μQFR) may represent a promising alternative, as it can quickly compute FFR from a single angiographic view.

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Background: The association between coronary microcirculation and clinical outcomes in patients with intermediate stenosis remains unclear.

Objectives: The aim of this study was to assess the prognostic significance of angiography-derived index of microcirculatory resistance (angio-IMR) in patients with intermediate coronary stenosis.

Methods: This post hoc analysis included 1,658 patients from the FLAVOUR (Fractional Flow Reserve and Intravascular Ultrasound for Clinical Outcomes in Patients with Intermediate Stenosis) trial, with angio-IMR measured in each vessel exhibiting intermediate stenosis.

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Background: Although fractional flow reserve (FFR) is the contemporary standard to detect hemodynamically significant coronary stenosis, it remains underused for the need of pressure wire and hyperemic stimulus. Coronary angiography-derived FFR could break through these barriers. The aim of this study was to assess the feasibility and performance of a novel diagnostic modality deriving FFR from invasive coronary angiography (AccuFFRangio) for coronary physiological assessment.

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Article Synopsis
  • Recent studies highlight the advantages of using intravascular imaging (IVI) for percutaneous coronary intervention (PCI) compared to traditional angiography, but the relevance of angiography-based physiological assessments during this procedure is not fully understood.
  • The FLAVOUR trial analyzed the impact of angiography-based physiological evaluations, specifically the quantitative flow ratio (μQFR), on treatment decisions for patients undergoing IVI-guided PCI.
  • Results indicated significant reclassification of treatment approaches based on μQFR, with the REFERENCE group experiencing a higher risk of major adverse cardiovascular events, while DEFER and PERFORM groups showed similar outcomes and quality of life after 2 years.*
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Background And Objectives: The Fractional Flow Reserve and Intravascular Ultrasound-Guided Intervention Strategy for Clinical Outcomes in Patients with Intermediate Stenosis (FLAVOUR) trial demonstrated non-inferiority of fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) compared with intravascular ultrasound (IVUS)-guided PCI. We sought to investigate the cost-effectiveness of FFR-guided PCI compared to IVUS-guided PCI in Korea.

Methods: A 2-part cost-effectiveness model, composed of a short-term decision tree model and a long-term Markov model, was developed for patients who underwent PCI to treat intermediate stenosis (40% to 70% stenosis by visual estimation on coronary angiography).

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Article Synopsis
  • Previous research has largely focused on specific physical activities and has not adequately explored their impacts on hypertension (HTN) and mortality, particularly in older adults.
  • A study using National Health and Nutrition Examination Survey data analyzed over 11,000 seniors with HTN, finding that those who were physically active experienced fewer co-morbidities and lower blood pressure levels compared to inactive individuals.
  • The research revealed that inactive seniors had a significantly higher risk of death from all causes and heart disease, even after considering factors like age and sex, highlighting the crucial role of physical activity in improving health outcomes for older adults with HTN.
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Background: Although hypertension is a significant public health challenge globally, only a few studies have assessed the effectiveness of risk factor control and adherence to recommended lifestyle among United States hypertension patients.

Methods: In this study, a detailed, stratified analysis of the 1999-2018 National Health and Nutrition Examination Survey was conducted to assess the adequacy of risk factor control and conformity to recommended lifestyle among United States patients with hypertension. Logistic regression analysis was used to identify influencing factors associated with not acheving risk factors and lifestyle targets.

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Article Synopsis
  • - AccuFFRct is a new noninvasive method that calculates fractional flow reserve (FFR) from coronary CT angiography (CCTA), but its accuracy has not been fully evaluated.
  • - A study involving 339 patients and 404 vessels compared AccuFFRct's computed FFR with invasive FFR, finding high diagnostic accuracy (90.6%) and better performance compared to traditional CCTA and quantitative coronary angiography.
  • - The findings suggest that AccuFFRct can reliably identify significant coronary stenosis and could decrease unnecessary invasive testing, particularly in patients with severe stenosis.
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In prior research related to physical activity, researchers have often centered their focus on only a limited number of activities, with little regard for mortality-related outcomes and insufficient focus on outcomes among diabetes patients with hypertension. The National Health and Nutrition Examination Survey was evaluated from 1999-2018 to identify individual with both diabetes and hypertension. These individuals were classified as being physically active or inactive.

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Abdominal aortic aneurysm (AAA) is characterized by permanent luminal expansion and a high mortality rate due to aortic rupture. Despite the identification of abnormalities in the mevalonate pathway (MVA) in many diseases, including cardiovascular diseases, the potential impact of this pathway on AAA remains unclear. This study aims to investigate whether the expression of the MVA-related enzyme is altered during the progression of angiotensin II (Ang II) -induced AAA.

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Background And Objectives: Angiographic assessment of coronary stenosis severity using quantitative coronary angiography (QCA) is often inconsistent with that based on fractional flow reserve (FFR) or intravascular ultrasound (IVUS). We investigated the incidence of discrepancies between QCA and FFR or IVUS, and the outcomes of FFR- and IVUS-guided strategies in discordant coronary lesions.

Methods: This study was a post-hoc analysis of the FLAVOUR study.

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Background: The health outcomes and their adherence to guideline-based secondary prevention physical activity in US patients with coronary heart disease (CHD), together with the association between physical activity (PA) and mortality risk, were investigated.

Methods: Data on CHD patients (aged 18 to 85 years) was acquired from the US National Health and Nutrition Examination Survey (NHANES) 1999-2018. The patients were divided into four groups according to the level and frequency of PA, namely, a) sedentary (n = 1178), b) moderate PA (moderate, n = 270), c) vigorous PA once or twice per week (vigorous ≤2×, n = 206), and d) vigorous PA three or more times per week (vigorous >2×, n = 598).

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Background: Pharmacologic therapies, risk factor control, and lifestyle alterations were independently proven to reduce long-term cardiovascular events. However, comprehensive research examining the extent to which individuals aged 75 and above in the United States adhere to national guidelines for the secondary prevention of coronary heart disease is limited. Therefore, the primary objective of this study was to examine the current state of secondary prevention of coronary heart disease in persons 75 years of age and older in the United States and to examine the factors that contribute to inadequate drug utilization and poor control of numerous risk factors.

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Background: Quantitative flow ratio (QFR) is a method for evaluating fractional flow reserve without the use of an invasive coronary pressure wire or pharmacological hyperemic agent.

Objectives: The aim of this study was to investigate the prognostic implications of QFR and plaque characteristics in patients who underwent intravascular ultrasound (IVUS)-guided treatment for intermediate lesions.

Methods: Among the IVUS-guided strategy group in the FLAVOUR (Fractional Flow Reserve and Intravascular Ultrasound for Clinical Outcomes in Patients with Intermediate Stenosis) trial, vessels suitable for QFR analysis were included in this study.

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Essential hypertension is a notable threat for the older (age, ≥65 years) population. However, to the best of our knowledge, a real-world study assessing olmesartan medoxomil-amlodipine besylate (OM-AML) tablets in older Chinese patients with essential hypertension has not been performed. Therefore, the present study aimed to evaluate the efficacy and safety of OM-AML tablets in these patients.

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Importance: Treatment strategies for intermediate coronary lesions guided by fractional flow reserve (FFR) and intravascular ultrasonography (IVUS) have shown comparable outcomes. Identifying low-risk deferred vessels to ensure the safe deferral of percutaneous coronary intervention (PCI) and high-risk revascularized vessels that necessitate thorough follow-up can help determine optimal treatment strategies.

Objectives: To investigate outcomes according to treatment types and FFR and IVUS parameters after FFR- or IVUS-guided treatment.

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Introduction: Percutaneous coronary intervention (PCI) guided by coronary angiography-derived fractional flow reserve (FFR) or intravascular ultrasound (IVUS) has shown improved clinical outcomes compared with angiography-only-guided PCI. In patients with intermediate stenoses, FFR resulted in fewer coronary interventions and was non-inferior to IVUS with respect to clinical outcomes. However, whether this finding can be applied to angiography-derived FFR in significant coronary artery disease (CAD) remains unclear.

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Background: There are limited data regarding the safety of deferral of percutaneous coronary intervention based on intravascular ultrasound (IVUS) findings. The current study sought to compare the prognosis between deferred lesions based on IVUS and fractional flow reserve (FFR)-guided treatment decision.

Methods: This study is a post hoc analysis of the FLAVOUR randomized trial (Fractional Flow Reserve and Intravascular Ultrasound for Clinical Outcomes in Patients With Intermediate Stenosis) that compared 2-year clinical outcomes between IVUS- and FFR-guided treatment decision on intermediate coronary artery lesions using predefined criteria.

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Background: Accurate segmentation of the left ventricle (LV) is an important step in assessing cardiac function. Cardiac CT angiography (CCTA) has become an important means of clinical diagnosis of cardiovascular diseases (CVDs) because of its advantages of non-invasive, short examination time and low cost. In order to obtain the segmentation of LV in CCTA scans, we propose a deep learning method based on 8-layer residual U-Net with deep supervision.

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There lacks real-world study with a large sample size assessing olmesartan medoxomil-amlodipine besylate (OM-AML) tablet. Therefore, this study aimed to evaluate the efficacy and safety of OM-AML tablet in patients with essential hypertension. Totally, 1341 patients from 36 medical centers with essential hypertension who took OM-AML (20/5 mg) tablet were analyzed in the current prospective, single-arm, multi-center, real-world study (SVK study).

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Article Synopsis
  • A recent trial shows that using fractional flow reserve (FFR) for PCI is just as good as using intracoronary ultrasound (IVUS) but results in fewer procedures.
  • This study analyzed how sex affects treatment decisions and outcomes in PCI, particularly looking at the differences between men and women concerning procedural characteristics and rates of target vessel failure (TVF) at 24 months.
  • Findings indicate that women had better outcomes and lower rates of TVF, even with fewer interventions, while both FFR and IVUS strategies produced similar results in terms of clinical outcomes for both sexes.
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Background: Abdominal aortic aneurysm (AAA) is a life threatening vascular disease. Our previous study reported the upregulation of CD147 expression in human aortic aneurysms.

Objective: In this study, we injected apoE-/- mice intraperitoneally with CD147 monoclonal antibody or IgG control antibody to observe its effect on Angiotensin II (AngII) induced AAA formation.

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Background: Coronary computed tomography-derived fractional flow reserve (CT-FFR) and intravascular ultrasound-derived fractional flow reserve (IVUS-FFR) are two functional assessment methods for coronary stenoses. However, the calculation algorithms for these methods differ significantly. This study aimed to compare the diagnostic performance of CT-FFR and IVUS-FFR using invasive fractional flow reserve (FFR) as the reference standard.

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