Publications by authors named "Nikolaos Koulouris"

Background: Reticulation, ground glass opacities and post-infection bronchiectasis are present three months following hospitalisation in patients recovering from SARS-CoV-2 infection and are associated with the severity of acute infection. However, scarce data exist on small airways impairment and lung hyperinflation in patients with long COVID-19.

Aim: To evaluate small airways function and lung hyperinflation in previously hospitalised patients with long COVID-19 and their association with post-COVID-19 breathlessness.

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  • - The study investigates how a 3-month cardiopulmonary rehabilitation program affects heart health and blood vessel stiffness in people recovering from COVID-19, comparing them to a non-COVID-19 group.
  • - Results show significant improvements in arterial stiffness (PWV) and left ventricular function in the COVID-19 group who participated in rehabilitation, while these measures remained poor in those who didn't.
  • - The findings suggest that rehabilitation effectively enhances recovery in heart-related metrics and overall physical fitness in post-COVID-19 patients, emphasizing the importance of such programs after the illness.
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  • Long COVID-19 syndrome is linked to cardiorespiratory issues, but its effect on exercise capacity is still unclear, leading researchers to study this relationship using cardiopulmonary exercise testing (CPET) and echocardiograms.
  • The study involved 42 patients recovering from COVID-19 and 10 healthy participants, assessing heart function through various measures such as left ventricular ejection fraction (LVEF) and pulmonary artery pressure.
  • Results showed that patients had significantly lower heart function and exercise capacity compared to healthy participants, with exercise intolerance being associated with left ventricular performance and pressures, indicating that heart health is crucial for recovery in long COVID-19.
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Background/aim: Real-world data on the EGFR mutational profile upon progression after first/second-generation EGFR-TKI treatment in patients with advanced non-small-cell lung cancer (NSCLC) and treatment strategies employed thereon are needed.

Patients And Methods: This observational study was conducted in 23 hospital-based lung cancer Centers in Greece (protocol code: D133FR00126). Ninety-six eligible patients were consecutively enrolled between July-2017 and September-2019.

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Coronavirus disease (COVID-19) is a respiratory disease, although arterial function involvement has been documented. We assess the impact of a post-acute COVID-19 rehabilitation program on endothelium-dependent vasodilation and arterial wall properties. We enrolled 60 convalescent patients from COVID-19 and one-month post-acute disease, who were randomized at a 1:1 ratio in a 3-month cardiopulmonary rehabilitation program (study group) or not (control group).

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Purpose: To estimate the prevalence of asthma in adults, by gender and age, in urban and rural areas of Cyprus.

Patients And Methods: This was a population-based, random-digit dialing, telephone nation-wide survey to recruit patients with asthma. Among 8996 random landline-telephone contacted from the five major urban and rural regions of Cyprus, 1914 were finally met the age criterion of ≥18 years old and 572 completed valid screening for prevalence estimation.

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Angiopoietin-2 (Ang-2) has been implicated in the development of several types of cancer, including lung malignancy. In the present study, we examined the impact of Ang-2 serum concentration on the development, dissemination, and 5-year overall survival of NSCLC and SCLC. A total of 99 patients with lung cancer were tested.

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  • COPD is a prevalent respiratory disease that can be effectively managed and prevented through early interventions and newer treatment strategies.
  • The Hellenic Thoracic Society's Working Group compiled updated information on COPD management, including prevalence data, diagnostic approaches, and disease severity classification.
  • A comprehensive treatment strategy for COPD includes not just medication, but also pulmonary rehabilitation, physical activity, patient education, and self-assessment to enhance patients' quality of life and minimize exacerbations.
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Introduction: Community-acquired pneumonia (CAP) presents high mortality rates and high healthcare costs worldwide. C-reactive protein (CRP) has been widely used as a biomarker for the management of CAP. We evaluated the performance of CRP threshold values and ΔCRP as predictors of CAP survival and length of hospital stay.

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For the various asthma-specific beneficial effects of physical activity, daily physical activity (DPA) and the potential of asthma therapies on DPA require better characterization. Hence, we aimed to determine (a) the DPA of asthma patients, and (b) the effect of add-on mepolizumab on the DPA of severe asthma patients. Adult outpatients with mild-to-moderate or severe asthma had accelerometer assessment of DPA.

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Sestrins (Sesns) are a family of highly conserved stress-inducible proteins and various stresses have been shown to strongly up-regulate them. Sestrin 2 (Sesn2) deficiency has been shown to partially suppress pulmonary emphysema. The aim of this study was to evaluate Sesn2 levels in COPD patients and its possible associations with the presence of emphysema and blood eosinophils.

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Background: Ensovibep (MP0420) is a designed ankyrin repeat protein, a novel class of engineered proteins, under investigation as a treatment of SARS-CoV-2 infection.

Objective: To investigate if ensovibep, in addition to remdesivir and other standard care, improves clinical outcomes among patients hospitalized with COVID-19 compared with standard care alone.

Design: Double-blind, randomized, placebo-controlled, clinical trial.

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Chronic obstructive pulmonary disease (COPD) is a leading cause of morbidity and mortality worldwide accompanied by a substantial social and economic burden for the patient and the society. Poor sleep quality among COPD patients is frequently unnoticed and unaddressed by physicians and patients themselves, although it is a major source of further deterioration of these patients' quality of life. The aim of the present study was to record the quality of sleep in COPD patients among the Greek population and correlate these findings with various features of these patients, using the COPD and Asthma Sleep Impact Scale (CASIS).

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Angiogenesis is a biological process that involves the formation of new blood vessels from the existing vasculature, and it plays a fundamental role in the development and progression of several types of cancer, including lung cancer. The angiopoietin/Tie2 ligand/receptor system orchestrates vascular integrity. In particular, Angiopoietin-1 activates the endothelial cell (EC)-specific receptor tyrosine kinase,Tie2,which is essential for preserving endothelial quiescence.

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Background: Benign tracheal stenosis may relapse after management.

Objectives: This study aimed to assess the value of dyspnea and spirometry in detecting relapse of benign tracheal stenosis.

Methods: Patients with benign tracheal stenosis were evaluated post-management, at regular follow-up and emergency visits, with the Medical Research Council (MRC) dyspnea scale, spirometry, and flexible bronchoscopy.

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  • A study conducted in Greece from February to May 2020 analyzed hospitalized COVID-19 patients, revealing that most subjects were male (65.7%) with an average age of 60, predominantly non-smokers (57.2%).
  • The majority received a standard treatment regimen including hydroxychloroquine and azithromycin, with an average hospital stay of 10 days; 13.3% required intubation and 4.2% died.
  • The findings highlighted that higher neutrophil-to-lymphocyte ratios (NLR) and lactate dehydrogenase (LDH) levels were linked to more severe disease, suggesting these markers may help predict disease progression and inform treatment decisions.
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  • * A study in Greece analyzed data from 3,615 COPD patients, focusing on 65 different medical variables, to see how well GOLD's recommendations were being followed in real clinical settings.
  • * Results showed that most patients were in group B of the ABCD classification, but adherence to GOLD’s guidelines was unclear, especially for those in group A, highlighting a need for better compliance among healthcare providers.
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Background: We performed metabolomic profiling to identify metabolites that correlate with disease progression and death.

Methods: We performed a study of adults hospitalized with Influenza A(H1N1)pdm09. Cases (n = 32) were defined by a composite outcome of death or transfer to the intensive care unit during the 60-day follow-up period.

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A central paradigm of immunity is that interferon (IFN)-mediated antiviral responses precede pro-inflammatory ones, optimizing host protection and minimizing collateral damage. Here, we report that for coronavirus disease 2019 (COVID-19) this paradigm does not apply. By investigating temporal IFN and inflammatory cytokine patterns in 32 moderate-to-severe patients with COVID-19 hospitalized for pneumonia and longitudinally followed for the development of respiratory failure and death, we reveal that IFN-λ and type I IFN production were both diminished and delayed, induced only in a fraction of patients as they became critically ill.

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Background: Accurate mediastinal staging in patients with non-small cell lung cancer (NSCLC) is crucial for the determination of optimal treatment management.

Methods: This was a real-life prospective study enrolling 140 patients between December 2016 and August 2018. We aimed to determine the clinical utility of EBUS/EUS-b in mediastinal staging of patients with NSCLC in comparison with integrated PET/CT.

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Importance: Severe acute respiratory syndrome coronavirus 2 infection has evolved into a global pandemic. Low-dose colchicine combines anti-inflammatory action with a favorable safety profile.

Objective: To evaluate the effect of treatment with colchicine on cardiac and inflammatory biomarkers and clinical outcomes in patients hospitalized with coronavirus disease 2019 (COVID-19).

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Proper management of COVID-19 mandates better understanding of disease pathogenesis. The sudden clinical deterioration 7-8 days after initial symptom onset suggests that severe respiratory failure (SRF) in COVID-19 is driven by a unique pattern of immune dysfunction. We studied immune responses of 54 COVID-19 patients, 28 of whom had SRF.

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Objective: Colchicine has been utilized safely in a variety of cardiovascular clinical conditions. Among its potential mechanisms of action is the non-selective inhibition of NLRP3 inflammasome which is thought to be a major pathophysiologic component in the clinical course of patients with COVID-19. GRECCO-19 will be a prospective, randomized, open-labeled, controlled study to assess the effects of colchicine in COVID-19 complications prevention.

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Asthma is the commonest respiratory disease and one of unceasingly increasing prevalence and burden. As such, asthma has attracted a major share or scientific interest and clinical attention. With the various clinical and pathophysiological aspects of asthma having been extensively investigated, the important association between asthma and physical activity remains underappreciated and insufficiently explored.

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