Publications by authors named "D'Alessandro L"

Human satellitess(HSats) are pericentric, tandemly repeating satellite DNA sequences in the human genome. While silent in normal cells, a subset of HSat2 noncoding RNA is expressed and accumulates in the nucleus of cancer cells. We developed a FISH-based approach for identification of the distribution of three subfamilies of HSat2 (A1, A2, B) sequences on individual human chromosomes.

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Background: Despite growing interest in workplace mental health interventions, evidence of their effectiveness is mixed. Implementation science offers a valuable lens to investigate the factors influencing successful implementation. However, evidence synthesis is lacking, especially for small-to-medium-sized enterprises (SMEs) and for specific work sectors.

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Chronic liver diseases are worldwide on the rise. Due to the rapidly increasing incidence, in particular in Western countries, metabolic dysfunction-associated steatotic liver disease (MASLD) is gaining importance as the disease can develop into hepatocellular carcinoma. Lipid accumulation in hepatocytes has been identified as the characteristic structural change in MASLD development, but molecular mechanisms responsible for disease progression remained unresolved.

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Background: Well-organised and managed workplaces can be a source of wellbeing. The construction, healthcare and information and communication technology sectors are characterised by work-related stressors (e.g.

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The human liver has a remarkable capacity to regenerate and thus compensate over decades for fibrosis caused by toxic chemicals, drugs, alcohol, or malnutrition. To date, no protective mechanisms have been identified that help the liver tolerate these repeated injuries. In this study, we revealed dysregulation of lipid metabolism and mild inflammation as protective mechanisms by studying longitudinal multi-omic measurements of liver fibrosis induced by repeated CCl injections in mice (n = 45).

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Background: There is a gap between the necessity of effective mental health interventions in the workplace and the availability of evidence-based information on how to evaluate them. The available evidence outlines that mental health interventions should follow integrated approaches combining multiple components related to different levels of change. However, there is a lack of robust studies on how to evaluate multicomponent workplace interventions which target a variety of outcomes at different levels taking into account the influence of different implementation contexts.

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Background: The onset of the coronavirus disease in 2019 necessitated a rapid transition to virtual care for chronic pain treatment.

Methods: A mixed methods design was implemented using qualitative interviews and quantitative satisfaction surveys. Interviews were conducted in February 2021 with a sample of healthcare professionals (HCPs; = 6) who had provided multidisciplinary treatment (MDT) through an outpatient hospital pediatric chronic pain program.

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Purpose: The aim of our study was to evaluate the prevalence of early complications after Transcatheter Aortic Valve Implantation (TAVI) and their correlation with the Calcium Score (CS) of the aortic valve, aorta and ilio-femoral arteries derived from pre-procedural computed tomography (CT).

Materials And Methods: We retrospectively reviewed 226 patients (100 males, mean age 79.4 ± 6.

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Background: The onset of the coronavirus disease 2019 (COVID-19) necessitated a rapid transition to virtual care for chronic pain treatment.

Objective: This study examined experiences of patients and caregivers who received virtual multidisciplinary pain treatment (MDT) for pediatric chronic pain between March 2020 and August 2021.

Methods: A mixed methods design was implemented using qualitative interviews and quantitative satisfaction surveys.

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In health and disease, liver cells are continuously exposed to cytokines and growth factors. While individual signal transduction pathways induced by these factors were studied in great detail, the cellular responses induced by repeated or combined stimulations are complex and less understood. Growth factor receptors on the cell surface of hepatocytes were shown to be regulated by receptor interactions, receptor trafficking and feedback regulation.

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Many physiological processes and pathological phenomena in the liver tissue are spatially heterogeneous. At a local scale, biomarkers can be quantified along the axis of the blood flow, from portal fields (PFs) to central veins (CVs), i.e.

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Thymomas are neoplasms associated with paraneoplastic disorders. Severe hypersensitivity reactions involving the oral cavity may be the first sign of an undiagnosed thymoma. Oral manifestations of an underlying thymoma may present as recurrent severe painful lesions with associated significant morbidity, often not responding to standard therapeutic measures.

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The thyroid system plays a major role in the regulation of several physiological processes. The dysregulation of the thyroid system caused by the interference of xenobiotics and contaminants may bring to pathologies like hyper- and hypothyroidism and it has been recently correlated with adverse outcomes leading to cancer, obesity, diabetes and neurodevelopmental disorders. Thyroid disruption can occur at several levels.

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Purpose: Chronic scrotal content pain, chronic orchialgia, or testicular pain can present after trauma, vasectomy, and hernia repair, among other triggers. Microsurgical denervation of the spermatic cord is an option for definitive pain control. While this practice is established in adult urology, access to diagnostic intervention and definitive denervation surgery is limited in the pediatric population.

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Background: Studies have been conducted describing the potential for using virtual care software during disasters and public health emergencies. However, limited data exist on ways in which the Canadian health care system utilizes virtual care during disasters or public health emergencies.

Aims: Due to the need for social distancing and reduction of nonessential ambulatory services during the COVID-19 pandemic, the SickKids Chronic Pain Clinic sought to transition care delivery from in person to virtual.

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Blue diode laser emits a 445 nm wavelength light, which is extremely effective with hemoglobin, and has an optimal hemostatic effect. This work analyzes its thermal effects and clinical efficacy, when used to perform excisional biopsies. Forty-two excisional biopsies were performed with the laser; then, the extent of perincisional thermal effects was evaluated and patients were followed up.

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Article Synopsis
  • Human chromosomes have areas called pericentric regions that contain satellite sequences, including HSATII, which are normally silenced in regular cells but expressed in many cancer cells.
  • In cancer, HSATII RNA accumulates in large nuclear clusters, bringing with it proteins like MeCP2, which are involved in regulating chromatin.
  • Experiments showed that introducing HSATII into normal cells causes it to gather in the nucleus and leads to cell division issues, mirroring the behavior seen in cancer cells and highlighting potential consequences of its expression.
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The focus of this paper is on elastic metamaterials characterised by the presence of wide sub-wavelength band gap. In most cases, such mechanical property is strictly connected to the periodic repetition of the unit cell. Nonetheless, the strict periodicity requirement could represent a drawback.

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Background: Elastin insufficiency causes recurrent vascular stenoses. Hemizygous deletion of the elastin gene () causes Williams-Beuren syndrome (WBS), while single nucleotide variants in cause nonsyndromic supravalvar aortic stenosis (SVAS). Our objective was to compare cardiovascular disease outcomes in patients with WBS and nonsyndromic SVAS.

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Continuously evolving laser devices can be used in various fields; they are an alternative to the traditional cold blade surgery to perform biopsies of oral soft tissues. The aspect focused on in this paper is the possibility to use the 445 nm diode laser (Eltech K-Laser srl, Treviso, Italy) in complete safety, by evaluating its thermal effects during microscopy. A histological evaluation of the alteration of the peri-incisional edges on 10 samples was realized.

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The design of innovative metamaterials with robust and reliable performances is attracting increasing interest in the scientific community because of their unique properties and for their unexplored potential. In particular, dynamical properties of periodic structures are widely studied specifically for their bandgap opening characteristic, which enables the design of structures with unprecedented dynamical behaviour. In the present work an ultra-wide three-dimensional bandgap is presented, with extremely low frequency range of operation.

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Article Synopsis
  • Scientists studied how differences in left and right sides during embryo development can lead to birth defects that affect organ placement.
  • They looked at the DNA of 323 people with these issues and found some rare gene changes that might be connected to these problems.
  • The research suggests that there are many genes involved and it can be really complex, which means more work needs to be done to understand why these defects happen.
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Sensory brain regions show neuroplastic changes following deficits or experimental augmentation of peripheral input during a neonatal period. We have previously shown reorganization of cortical tonotopic maps after neonatal cochlear lesions or exposure to an enhanced acoustic environment. Such experiments probe the cortex and show reorganization, but it is unclear if such changes are intrinsically cortical or reflect projections from modified subcortical regions.

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