Publications by authors named "Annoni A"

Background The detection of in-stent restenosis (ISR) with coronary CT angiography (CCTA) is challenging, but CT perfusion (CTP) has demonstrated improved diagnostic accuracy over CCTA in patients with stents. However, there are limited data on the performance of dynamic CTP, which allows noninvasive adjudication of regional myocardial blood flow. Purpose To compare the diagnostic performance of regadenoson-stress dynamic CTP with that of CCTA, using fractional flow reserve (FFR) and the index of microvascular resistance (IMR) as reference standards for epicardial coronary circulation and coronary microcirculation, respectively.

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Background: Hypertrophic cardiomyopathy (HCM) is the most common inherited cardiovascular disease that affects approximately one in 500 people. Cardiac magnetic resonance (CMR) imaging has emerged as a powerful tool for the non-invasive assessment of HCM. CMR can accurately quantify the extent and distribution of hypertrophy, assess the presence and severity of myocardial fibrosis, and detect associated abnormalities.

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Background: The aim of this study is to describe resources and outcomes of coronary computed tomography angiography plus Stress CT perfusion (CCTA ​+ ​Stress-CTP) and stress cardiovascular magnetic resonance (Stress-CMR) in symptomatic patients with suspected or known CAD.

Methods: Six hundred and twenty-four consecutive symptomatic patients with intermediate to high-risk pretest likelihood for CAD or previous history of revascularization referred to our hospital for clinically indicated CCTA ​+ ​Stress-CTP or Stress-CMR were enrolled. Stress-CTP scans were performed in 223 patients while 401 patients performed Stress-CMR.

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Introduction: Promoting mental health, preventing and treating mental disorders are critically important in public health, and many randomised controlled trials (RCTs) evaluate intervention strategies for these objectives. However, distinguishing promotion from prevention and from treatment RCTs is challenging. A tool to place studies along the promotion-to-treatment continuum in mental health research does not exist, leaving it to researchers and policymakers to decide on how to classify individual RCTs, which hinders evidence synthesis.

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Article Synopsis
  • The study aimed to determine if feature-tracking strain measurements during stress cardiac MRI could help predict long-term risks of major adverse cardiac events (MACE) in patients with coronary artery disease (CAD) without needing contrast agents.
  • After analyzing 729 patients over about 6 years, the presence of late gadolinium enhancement (LGE) and stress global circumferential strain (GCS) were found to be independent indicators of MACE, occurring in 9.6% of the patients.
  • Ultimately, the research demonstrated that a contrast-free stress cardiac MRI with stress GCS could provide similar prognostic information as traditional myocardial perfusion assessments, highlighting its importance for patients with severe renal issues.
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Lentiviral vectors (LV) are efficient vehicles for in vivo gene delivery to the liver. LV integration into the chromatin of target cells ensures their transmission upon proliferation, thus allowing potentially life-long gene therapy following a single administration, even to young individuals. The glycoprotein of the vesicular stomatitis virus (VSV.

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Article Synopsis
  • This study evaluated the significance of epicardial adipose tissue (EAT) volume in predicting major cardiovascular events (MACE) in patients undergoing stress cardiac MRI.
  • A total of 730 patients were divided into two groups to develop and validate a risk assessment model that incorporates EAT volume alongside other factors like left ventricular ejection fraction and stress perfusion defects.
  • The results indicated that including EAT volume significantly improves the prediction of MACE, suggesting that automated measurements of EAT can enhance existing cardiac risk assessments.
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Aims: Myocardial bridging (MB) is a frequent congenital anomaly of the epicardial coronary arteries commonly considered a benign condition. However, in some cases a complex interplay between anatomical, clinical and physiology factors may lead to adverse events, including sudden cardiac death. Coronary CT angiography (CCTA) emerged as the gold standard noninvasive imaging technique for the evaluation of MB.

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Background: Informal caregivers of people with dementia are at high risk of developing mental and physical distress because of the intensity of the care provided. iSupport is an evidence-based digital program developed by the World Health Organization to provide education and support for the informal everyday care of people living with dementia.

Objective: Our study aims to describe in detail the cultural adaptation process of iSupport in Switzerland.

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Carotid artery stenosis is a major cause of morbidity and mortality. The journey to understanding carotid disease has developed over time and radiology has a pivotal role in diagnosis, risk stratification and therapeutic management. This paper reviews the history of diagnostic imaging in carotid disease, its evolution towards its current applications in the clinical and research fields, and the potential of new technologies to aid clinicians in identifying the disease and tailoring medical and surgical treatment.

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Acute aortic syndromes comprise a range of interrelated conditions including aortic dissection, intramural hematoma, penetrating atherosclerotic ulcer, and contained or not contained aortic aneurysm rupture. These syndromes are potentially life threatening; therefore, a rapid and accurate diagnosis is crucial. A new Clinical Consensus Statement on Aortic and Peripheral Vascular Disease has recently been published, and we will try to highlight the main innovations in the document.

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Background: COVID-19 patients can report 'brain fog' and may exhibit cognitive symptoms for months after recovery (Cognitive COVID). However, evidence on whether and the extent to which SARS-CoV-2 infection impacts cognition irrespective of COVID-19 course and severity is limited to clinical samples and mainly comes from prognostic studies. We aimed to explore the association between serologically confirmed SARS-CoV-2 infection and cognitive functioning in community-based and institutionalized older adults, irrespective of COVID-19 symptoms.

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Introduction: Recombination activating genes () 1 and 2 defects are the most frequent form of severe combined immunodeficiency (SCID). Patients with residual RAG activity have a spectrum of clinical manifestations ranging from Omenn syndrome to delayed-onset combined immunodeficiency, often associated with granulomas and/or autoimmunity (CID-G/AI). Lentiviral vector (LV) gene therapy (GT) has been proposed as an alternative treatment to the standard hematopoietic stem cell transplant and a clinical trial for RAG1 SCID patients recently started.

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Article Synopsis
  • Small extracellular vesicles (sEVs) play a role in inflammation and vascular injury and may serve as potential diagnostic markers for diseases, particularly in STEMI patients.
  • A study analyzed plasma sEVs from 42 STEMI patients treated with primary percutaneous coronary intervention, revealing that sEV size and specific markers were linked to myocardial damage assessed by Cardiac Magnetic Resonance (CMR).
  • The results suggest that sEV size and the expression of CD41-CD61 could help identify patients at high risk for complications after a heart attack, leading to better treatment strategies.
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Background: We explored whether number of languages spoken and language proficiency are associated with cognitive performance among older adults living in the community and in long-term care (LTC) in Switzerland.

Methods: Among study participants, 664 lived in the community in the Canton of Zurich (Mean age = 72.97 years; SD = 6.

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Extracorporeal membrane oxygenation (ECMO) has been used in highly selected COVID-19 patients with severe respiratory failure. Scarce data exist on long-term outcomes of these patients. We performed a single-center prospective evaluation of consecutive COVID-19 ECMO patients successfully discharged from the intensive care unit between February 2020 and January 2022.

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Objectives: Aim of the study is to compare manual and semi-automatic measurements for aortic annulus assessment among different operators.

Methods: Eighty patients who underwent TAVI were retrospectively enrolled. The measurements manually performed by an experienced reader for aortic annulus (minimum and maximum diameters, perimeter, area), annulus-to-coronary ostia distance and time needed for the whole evaluation, were collected.

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Background: Seroprevalence and the proportion of people with neutralizing activity (functional immunity) against SARS-CoV-2 variants were high in early 2022. In this prospective, population- based, multi-region cohort study, we assessed the development of functional and hybrid immunity (induced by vaccination and infection) in the general population during this period of high incidence of infections with Omicron variants.

Methods: We randomly selected and assessed individuals aged ≥16 years from the general population in southern (n = 739) and north-eastern (n = 964) Switzerland in March 2022.

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Article Synopsis
  • Ex vivo gene editing in T cells and hematopoietic stem/progenitor cells shows potential for treating various diseases through techniques like electroporation and the use of viral vectors.
  • A study revealed that electroporation causes significant cell death and metabolic disruptions in T cells, while using lipid nanoparticles (LNPs) for nuclease RNA delivery resulted in better cell survival and growth.
  • LNPs not only decreased the harmful effects associated with gene editing procedures but also improved editing efficiency in HSPCs, making them a promising tool for safe and effective gene therapy.
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Tolerogenic dendritic cells play a critical role in promoting antigen-specific tolerance via dampening of T cell responses, induction of pathogenic T cell exhaustion and antigen-specific regulatory T cells. Here we efficiently generate tolerogenic dendritic cells by genetic engineering of monocytes with lentiviral vectors co-encoding for immunodominant antigen-derived peptides and IL-10. These transduced dendritic cells (designated DC) secrete IL-10 and efficiently downregulate antigen-specific CD4 and CD8 T cell responses from healthy subjects and celiac disease patients in vitro.

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ICU survivors suffer from various long-term physical and psychological impairments. Memories from the critical illness may influence long-term psychological outcome. In particular, the role of ICU memories in COVID-19 critically ill patients is unknown.

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Background: Cardiac computed tomography (CCT) was recently validated to measure extracellular volume (ECV) in the setting of cardiac amyloidosis, showing good agreement with cardiovascular magnetic resonance (CMR). However, no evidence is available with a whole-heart single source, single energy CT scanner in the clinical context of newly diagnosed left ventricular dysfunction. Therefore, the aim of this study was to test the diagnostic accuracy of ECV in patients with a recent diagnosis of dilated cardiomyopathy, having ECV as the reference technique.

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Ischaemic heart disease (IHD) is one of the world's leading causes of morbidity and mortality. Likewise, the diagnosis and risk stratification of patients with coronary artery disease (CAD) have always been based on the detection of the presence and extent of ischaemia by physical or pharmacological stress tests with or without the aid of imaging methods (e.g.

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