Publications by authors named "Theofilis P"

Background: Intracardiac echocardiography (ICE) appears to be a potential alternative for percutaneous left atrial appendage occlusion (LAAO) to transesophageal echocardiography (TEE). Thus, a meta-analysis was performed comparing ICE vs. TEE for LAAO guidance.

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Introduction: Sodium-glucose cotransporter 2 (SGLT2) inhibitors have emerged as a groundbreaking class of antidiabetic medications renowned for their glucose-lowering effects and cardiovascular benefits. Recent studies have suggested that SGLT2 inhibitors may extend their influence beyond glycemic control to impact adipose tissue physiology, particularly within the epicardial adipose depot. Epicardial adipose tissue (EAT), an actively secretory organ surrounding the heart, has been implicated in the modulation of cardiovascular risk.

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Atrial fibrosis is a hallmark of atrial cardiomyopathy and plays a pivotal role in the pathogenesis of atrial fibrillation (AF), contributing to its onset and progression. The mechanisms underlying atrial fibrosis are multifaceted, involving stretch-induced fibroblast activation, oxidative stress, inflammation, and coagulation pathways. Variations in fibrosis types-reactive and replacement fibrosis-are influenced by patient-specific factors such as age, sex, and comorbidities, complicating therapeutic approaches.

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Cancer therapy-related cardiac dysfunction (CTRCD) has emerged as a significant concern with the rise of effective cancer treatments like anthracyclines and targeted therapies such as trastuzumab. While these therapies have improved cancer survival rates, their unintended cardiovascular side effects can lead to heart failure, cardiomyopathy, and arrhythmias. The pathophysiology of CTRCD involves oxidative stress, mitochondrial dysfunction, and calcium dysregulation, resulting in irreversible damage to cardiomyocytes.

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Arterial hypertension is a silent and progressive disease with deleterious vascular implications on all target organs, including the heart, the brain, the kidneys, and the eyes. Oxidative stress, defined as the overproduction of Reactive Oxygen Species (ROS) over antioxidants, is capable of deteriorating not only the normal endothelial but also the cellular function with further cardiovascular implications. Xanthine oxidase activity, NADPH oxidase overexpression, and ROS production lead to hypertension and high arterial tone, culminating in end-organ damage.

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Heart failure (HF) is a major global health challenge, particularly among individuals with type 2 diabetes mellitus (T2DM), who are at significantly higher risk of developing HF. Diabetic cardiomyopathy, a unique form of heart disease, often progresses silently until advanced stages. Recent research has focused on sodium-dependent glucose transporter 2 inhibitors (SGLT2i), originally developed for hyperglycemia, which have shown potential in reducing cardiovascular risks, including HF hospitalizations, irrespective of diabetic status.

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Kidney disease is a public health epidemic affecting 10% of the population worldwide with a constantly rising incidence, and it is an important contributor to morbidity and mortality. Type 2 diabetes mellitus (T2DM) is a chronic complex condition with a rising incidence worldwide. T2DM remains the principal cause of chronic kidney disease (CKD), which is related to a high risk for cardiovascular (CV) events, end-stage kidney disease (ESKD), and, overall, considerable morbidity and mortality.

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Article Synopsis
  • - SGLT2 inhibitors not only help with blood sugar, heart health, and kidney protection but also influence blood pressure, body weight, and fat metabolism.
  • - Blood pressure decreases can vary based on individual health history, with modest drops in body weight (1-2 kg) mainly due to fat loss from excess sugar and calorie loss.
  • - Changes in lipid levels include slight reductions in triglycerides and increases in both HDL and LDL cholesterol, but the exact reasons behind these effects are still being researched.
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  • Obstructive sleep apnea (OSA) is a common condition linked to higher cardiovascular risks, especially in people with obesity and type 2 diabetes (T2D), and although continuous positive airway pressure (CPAP) is often used for treatment, many patients struggle to stick with it.
  • New focus is on glucagon-like peptide-1 receptor agonists (GLP-1RAs) and sodium-glucose cotransporter-2 (SGLT2) inhibitors, which may offer benefits for OSA patients by helping with weight loss, lowering blood pressure, and improving heart health.
  • Emerging evidence suggests that these medications can reduce OSA severity and enhance daytime alertness, highlighting the need for more research to confirm their
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  • Heart failure (HF) is a serious health issue that has high rates of illness and death, with electrical conduction problems being a key factor in its progression.
  • Conduction system pacing (CSP) is a new treatment method that includes techniques like His bundle pacing and left bundle branch area pacing, recommended for certain patients despite mainly being supported by observational studies.
  • There are significant challenges in implementing CSP, such as difficulties with lead implantation and the need for better tools, making future large-scale randomized controlled trials necessary for improving treatment strategies for HF patients.
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Background: Cardio-renal syndrome, characterized by simultaneous cardiac and renal impairment, presents significant challenges in patient prognostication and management. This study aimed to investigate the C-reactive protein-to-albumin ratio (CRP/Albumin ratio) as a prognostic marker in patients with cardiorenal syndrome.

Methods: This observational cohort study included consecutive patients hospitalized for cardiorenal syndrome.

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Background: Physicians' exercise habits vary across different medical specialties and health service infrastructure. We assessed physicians' exercise performance according to the recommendations of the 2020 European Society of Cardiology Guidelines.

Methods: This cross-sectional study comprised 742 physicians of the Athens Medical Association (AMA), Greece.

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Aortic valve repair is currently the only effective treatment for calcific aortic valve stenosis (CAVS), as no pharmacological therapies exist to prevent or slow its progression. Recent promising results showed that glucagon-like peptide-1 (GLP-1) attenuates the calcification of aortic valve interstitial cells. Therefore, we conducted a two-sample Mendelian randomization analysis to investigate the effect of GLP-1 receptor agonism (GLP-1Ra) on the risk of CAVS.

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Heart failure (HF) is a growing concern due to the aging population and increasing prevalence of comorbidities. Despite advances in treatment, HF remains a significant burden, necessitating novel therapeutic approaches. Sodium-glucose cotransporter 2 inhibitors (SGLT2is) have emerged as a promising treatment option, demonstrating benefits across the entire spectrum of HF, regardless of left ventricular ejection fraction (LVEF).

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Introduction: Wearable Activity Trackers (WATs) offer real-time feedback on activity levels. We assessed the impact of WAT usage on physicians' exercise habits.

Methods: Physicians from the Athens Medical Association, Greece (n = 742) responded to a self-administered questionnaire evaluating usage of WAT, demographic characteristics, specialty, and physical exercise habits.

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Article Synopsis
  • * SGLT2i have shown benefits in heart and kidney protection, improving overall mortality and cardiovascular outcomes, with research exploring their effects on various bodily pathways, particularly concerning inflammation and microcirculation.
  • * The review highlights the potential influence of SGLT2i on the sympathetic nervous system (SNS), noting conflicting research results but emphasizing the importance of understanding SNS modulation in HF treatment options.
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Article Synopsis
  • - Current research indicates that asymptomatic atrial fibrillation (AF) may lead to similar risks of stroke and mortality as symptomatic AF, despite conflicting previous findings.
  • - A review of 36 studies, involving over 217,000 participants, showed no significant differences in all-cause mortality, stroke, or other major health outcomes between symptomatic and asymptomatic AF patients; however, symptomatic patients had a higher risk of developing new heart failure.
  • - Symptomatic patients tended to receive more aggressive treatments like antiarrhythmic drugs and ablation therapy, while asymptomatic patients had a higher chance of progressing to permanent AF.
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Hypertension, characterized by elevated blood pressure levels, remains a global health concern due to its association with cardiovascular complications, notably thrombosis. Thrombosis, the formation of blood clots within blood vessels, poses a significant risk for myocardial infarction, stroke, and limb ischemia, leading to adverse patient outcomes. Understanding the pathophysiological mechanisms underlying thrombosis in hypertension is crucial for developing effective preventive and therapeutic strategies.

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Cognitive impairment and subsequent dementia are considered significant health challenges. In patients with established dementia, it is argued that hypertension is the main risk factor for small vessel ischemic disease and additional cortical white matter lesions. Cognitive domains and impairments associated with hypertension include learning, memory, attention, abstract reasoning, mental flexibility, psychomotor skills, and executive function.

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Heart failure with preserved ejection fraction (HFpEF) represents an entity with complex pathophysiologic pathways, among which coronary microvascular dysfunction (CMD) is believed to be an important orchestrator. Research in the field of CMD has highlighted impaired vasoreactivity, capillary rarefaction, and inflammation as potential mediators of its development. CMD can be diagnosed via several noninvasive methods including transthoracic echocardiography, cardiac magnetic resonance, and positron emission tomography.

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Background: Flavonoids, the main class of polyphenols, exhibit antioxidant and antihypertensive properties.

Aim: To prospectively investigate the impact of flavonoids on arterial stiffness in patients with chronic kidney disease (CKD) stages I-IV.

Methods: In this prospective, single-arm study, CKD patients with arterial hypertension and diabetes mellitus were enrolled.

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Tea consumption is increasingly recognized for its potential benefits to cardiovascular health. This study reviews the available research, concentrating on the major components of tea and their mechanisms of action in the cardiovascular system. Tea is abundant in bioactive compounds, such as flavonoids and polysaccharides, which possess significant antioxidant and anti-inflammatory properties.

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Early revascularization for patients with acute myocardial infarction (AMI) is of outmost importance in limiting infarct size and associated complications, as well as for improving long-term survival and outcomes. However, reperfusion itself may further damage the myocardium and increase the infarct size, a condition commonly recognized as myocardial reperfusion injury. Several strategies have been developed for limiting the associated with reperfusion myocardial damage, including hypothermia.

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Obesity is a significant predisposing factor for heart failure with preserved ejection fraction (HFpEF). Although a substantial proportion of individuals with HFpEF also have obesity, those with obesity are under-represented in clinical trials for heart failure. In turn, current guidelines provided limited recommendations for the medical management of this patient population.

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