Publications by authors named "Michalis Doumas"

Aims: To systematically appraise and summarize the available evidence from published randomized controlled trials considering the effect of nebivolol on blood pressure in patients with hypertension.

Methods: Literature search was performed through Medline (via PubMed), Cochrane Library and Scopus until December 15, 2023. Double-independent study selection, data extraction and quality assessment were performed.

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Background & Aims: The effect of lipid-lowering treatment (LLT) on metabolic dysfunction associated steatotic liver disease (MASLD) is unclear. This is relevant for patients with familial hypercholesterolemia (FH) who are on lifelong LLT. We aimed to evaluate the effect of LLT on MASLD indices in this population.

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Objective Real-life management of patients with hypertension and chronic kidney disease (CKD) among European Society of Hypertension Excellence Centres (ESH-ECs) is unclear : we aimed to investigate it. Methods A survey was conducted in 2023. The questionnaire contained 64 questions asking ESH-ECs representatives to estimate how patients with CKD are managed.

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Article Synopsis
  • - A 2023 survey by the European Society of Hypertension assessed the management of chronic kidney disease (CKD) patients with hypertension across 88 centers in 27 countries, finding that only 28% had preexisting CKD, and 30% exhibited resistant hypertension.
  • - The survey indicated inconsistent rates of recent kidney function tests and varying usage of important medications, showing higher rates of certain drugs when nephrologists were involved in the care team.
  • - Overall, the study highlighted significant gaps in CKD screening and treatment prior to referral for specialized care, suggesting that tailored initiatives could enhance management for patients with hypertension and CKD.
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Aims: Three physical signs, namely tendon xanthomas, corneal arcus and xanthelasma, have been associated with heterozygous familial hypercholesterolemia (heFH). The prevalence and clinical significance of these signs are not well established among contemporary heFH individuals. This study explored the frequency as well as the association of these physical signs with prevalent atherosclerotic cardiovascular disease (ASCVD) in heFH individuals.

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Background: Familial hypercholesterolemia (FH) and obesity are well-established risk factors of atherosclerotic cardiovascular disease (ASCVD). Despite high prevalence, their joint association with ASCVD remains largely unknown.

Objective: To investigate the association of obesity with prevalent ASCVD in individuals with heterozygous FH (HeFH) enrolled in the Hellenic Familial Hypercholesterolemia Registry (HELLAS-FH).

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Article Synopsis
  • Familial hypercholesterolemia (FH) significantly increases the risk of atherosclerotic cardiovascular disease (ASCVD), with older patients (over 65) experiencing more ASCVD risk factors, such as hypertension and type 2 diabetes, compared to younger patients.
  • In a study of 2,273 adults, elderly FH patients showed a higher prevalence of established ASCVD (38.4%) and coronary artery disease (CAD) compared to their younger counterparts, even when adjusted for other risk factors.
  • Although elderly patients received more intense lipid-lowering treatments with lower post-treatment LDL-C levels, both elderly and younger groups had similarly low rates of achieving LDL-C targets, highlighting the need for improved early
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Despite advances, few therapeutics have shown efficacy in severe coronavirus disease 2019 (COVID-19). In a different context, virus-specific T cells have proven safe and effective. We conducted a randomized (2:1), open-label, phase 1/2 trial to evaluate the safety and efficacy of off-the-shelf, partially human leukocyte antigen (HLA)-matched, convalescent donor-derived severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific T cells (CoV-2-STs) in combination with standard of care (SoC) in patients with severe COVID-19 compared to SoC during Delta variant predominance.

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Article Synopsis
  • The text lists a diverse group of individuals from various countries involved in a specific academic or professional field, highlighting the international collaboration.
  • The names represent a wide range of nationalities, including participants from continents such as North America, Europe, Asia, and South America.
  • The purpose of this assembly may be related to research, a conference, or a project aiming to address global issues in their field of expertise.
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Skin tissue holds a prominent role in microcirculatory research as an easily accessible vascular bed for the noninvasive evaluation of microvascular function. Skin microvascular changes have been associated to alterations in distinct target organs and vascular beds, reinforcing the hypothesis that skin microcirculation can be used as a model of generalized microvascular function. In addition, skin microvascular dysfunction has been documented in cardiovascular disease and patients of increased cardiovascular risk where it has been associated with multiple cardiovascular risk factors, rendering it a candidate surrogate marker of vascular damage.

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Article Synopsis
  • Familial hypercholesterolemia (FH) and type 2 diabetes mellitus (T2DM) both increase the risk of atherosclerotic cardiovascular disease (ASCVD), but the relationship between T2DM and ASCVD in FH patients is not well understood.
  • In a study involving 1,719 adults with FH, 7.2% were diagnosed with T2DM, and those with T2DM showed significantly higher rates of ASCVD, coronary artery disease, and stroke compared to those without T2DM.
  • T2DM was strongly linked to a higher prevalence of ASCVD after adjusting for various risk factors, suggesting the need for enhanced risk assessment and treatment strategies for FH patients with T2DM.
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Article Synopsis
  • The study investigates the link between lipoprotein(a) [Lp(a)] levels and the prevalence of atherosclerotic cardiovascular disease (ASCVD) in adults with familial hypercholesterolemia (FH).
  • In a sample of 541 patients, those with higher Lp(a) concentrations showed a notable increase in ASCVD prevalence, with rates rising from 9.4% in the lowest tertile to 20.6% in the highest.
  • The findings suggest that elevated Lp(a) levels are an important risk factor for ASCVD in individuals with FH, emphasizing the need for monitoring and addressing Lp(a) in this population.
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Primary aldosteronism (PA) is associated with considerably higher cardiovascular risk and increased prevalence of organ damage compared to essential hypertension (EH). Laser speckle contrast imaging (LSCI) has emerged as a novel non-invasive tool to assess of skin microcirculation. Our aim was to evaluate skin microvascular function (SMF) using LSCI coupled with post-occlusive reactive hyperemia (PORH) in a group of PA patients (PAs) compared to patients with EH (EHs) and normotensive controls (NTs).

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Background: The 2019 European guidelines (ESC/EAS) for the treatment of dyslipidaemias recommend more aggressive targets for low-density lipoprotein cholesterol (LDL-C) in patients with familial hypercholesterolemia (FH). Current lipid-lowering treatment is often inadequate to achieve these targets.

Methods: Data from the HELLAS-FH registry were analysed to assess achievement of LDL-C targets in adults with FH based on the 2019 ESC/EAS guidelines.

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Aims: Despite the established link between familial hypercholesterolemia (FH) and increased risk of coronary heart disease (CHD), its association with other common atherosclerotic and metabolic diseases has not been extensively studied. The aim of this study was to report the prevalence of peripheral arterial disease (PAD) [i.e.

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Introduction: Type 1 diabetes mellitus (T1DM) is a chronic, autoimmune disease that is characterized by total absence of insulin production. Hypertension is a common comorbidity in T1DM with complex pathophysiology, while it is also a well-recognized risk factor for the development of cardiovascular disease (CVD), as well as other microvascular diabetic complications.

Areas Covered: The purpose of this review is to present the current definitions, epidemiological data and prevalence rates of hypertension in T1DM, as well as to describe current therapeutic options.

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Arterial hypertension is a well-established cardiovascular risk factor, and blood pressure (BP) control has largely improved the prognosis of hypertensive patients. A number of studies have assessed the role of BP levels in the prognosis of patients with acute coronary syndromes. Pathophysiologic links of hypertension to acute myocardial infarction (MI) include endothelial dysfunction, autonomic nervous system dysregulation, impaired vasoreactivity, and a genetic substrate.

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Background: Metabolic syndrome (MetS) is characterized by the simultaneous presence of obesity, hypertension, dyslipidemia and hyperglycemia in an individual, leading to increased cardiovascular disease (CVD) risk. It affects almost 35% of the US adult population, while its prevalence increases with age. Elevated blood pressure is the most frequent component of the syndrome; however, until now, the optimal antihypertensive regiment has not been defined.

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Unilateral primary aldosteronism is the most common surgically correctable form of endocrine hypertension and is usually differentiated from bilateral forms by adrenal venous sampling (AVS) or computed tomography (CT). Our objective was to compare clinical and biochemical postsurgical outcomes of patients with unilateral primary aldosteronism diagnosed by CT or AVS and identify predictors of surgical outcomes. Patient data were obtained from 18 internationally distributed centers and retrospectively analyzed for clinical and biochemical outcomes of adrenalectomy of patients with surgical management based on CT (n=235 patients, diagnosed from 1994-2016) or AVS (526 patients, diagnosed from 1994-2015) using the standardized PASO (Primary Aldosteronism Surgical Outcome) criteria.

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Introduction: An imbalance in the Autonomic Nervous System (ANS) is a central pathophysiologic mechanism in Heart Failure (HF) and has been a principal target of treatment in these patients. Traditional pharmacologic agents do not provide specific modulation of discrete arms of the ANS, while side effects may lead to poor tolerance. Technological advances have provided a series of invasive methods that may provide a focused effect on the ANS in selected patient groups.

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Introduction: Resistant hypertension (HT) is a common clinical entity with debilitating cardiovascular consequences. The highly heterogeneous nature of resistant HT requires a meticulous workup to exclude 'pseudo-resistance' and secondary forms of arterial HT. Resistant HT has recently gained wide scientific interest due to the introduction of interventional methods (renal sympathetic denervation and carotid baroreceptor stimulation) for blood pressure (BP) reduction in this patient population.

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Introduction: Although the first results from studies suggested important benefits regarding blood pressure (BP) control in resistant hypertension by the use of diverse systems of renal denervation (RDN) in the setting of resistant hypertension, the Symplicity HTN-3, randomized sham-controlled trial reduced the enthusiasm and led to a more critical approach towards this neuromodulation innovative therapy. Nowadays there is an ongoing research attempt to justify the pathophysiological background of RDN since overdrive of the sympathetic nervous system is one of the key mechanisms leading to the development and progression of the hypertensive and cardiovascular diseases.

Conclusion: Future RDN trials based on the clinical findings and gaps from previous works will try to identify those parameters to help identify better BP response, target the most suitable population and conclude whether this interventional approach can contribute to the clinical problem of uncontrolled hypertension.

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And suddenly, following the preliminary results of renal denervation and carotid baroreceptor stimulation, a big interest in resistant hypertension rose, and all interventionists, many of them with no previous experience with hypertension, fell in love with hypertension and especially resistant hypertension. In the European Society of Hypertension/International Society of Hypertension (ESH/ISH) 2014 Joint Hypertension meeting in Athens, there were no more than four to five sessions related to resistant hypertension and renal denervation, while in the 2014 EuroPCR meeting there were more than 60 renal denervation sessions! In light of the growing scientific interest in the treatment of this patient group, an update on the treatment available and some concerns regarding the definition and treatment of resistant hypertension is presented.

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Resistant hypertension, defined as failure to reach blood pressure (BP) goals despite treatment with ≥3 antihypertensive agents, one of which is a diuretic, bears a significant risk of cardiovascular complications. Strong evidence exists, implicating the overactivation of the sympathetic nervous system (SNS) in the pathogenesis of resistant hypertension through complex neurohormonal interactions. Renal denervation is a novel attractive option to achieve adequate blockade of the sympathetic system, with subsequent BP reductions in patients with resistant hypertension.

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