Publications by authors named "D'Alessandro V"

The paper demonstrates the effectiveness of the SNOWED dataset, specifically designed for identifying water bodies in Sentinel-2 images, in developing a remote sensing system based on deep neural networks. For this purpose, a system is implemented for monitoring the Po River, Italy's most important watercourse. By leveraging the SNOWED dataset, a simple U-Net neural model is trained to segment satellite images and distinguish, in general, water and land regions.

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Multicomponent solid forms for the combined delivery of antimicrobials can improve formulation performance, especially for poorly soluble drugs, by enabling the modified release of the active ingredients to better meet therapeutic needs. Chitosan microspheres incorporating ozonated sunflower oil were prepared by a spray-drying method and using azelaic acid as a biocompatible cross-linker to improve the long time frame. Two methods were used to incorporate ozonated oil into microspheres during the atomization process: one based on the use of a surfactant to emulsify the oil and another using mesoporous silica as an oil absorbent.

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Background: The new balloon-expandable (BE) Myval transcatheter heart valves (THV) has shown promising early results with low paravalvular leak (PVL) and permanent pacemaker implantation (PPI) rates. Limited data are available regarding its long-term performance. We aimed to compare the 2-year clinical and echocardiographic outcomes of transcatheter aortic valve replacement (TAVR) using the self-expanding (SE) Evolut R and the BE Myval THVs.

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In this paper, a machine learning (ML) approach to estimate blood pressure (BP) using photoplethysmography (PPG) is presented. The final aim of this paper was to develop ML methods for estimating blood pressure (BP) in a non-invasive way that is suitable in a telemedicine health-care monitoring context. The training of regression models useful for estimating systolic blood pressure (SBP) and diastolic blood pressure (DBP) was conducted using new extracted features from PPG signals processed using the Maximal Overlap Discrete Wavelet Transform (MODWT).

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Retroperitoneal sarcomas (RPSs) are rare findings that can grow into large masses without eliciting severe symptoms. At present, surgical resection is the only radical therapy, whenever it can be performed with the aim to achieve a complete removal of the tumor. The present report describes two consecutive cases of RPSs that resulted in dedifferentiated liposarcomas (DDLPSs) and these patients underwent R0 surgical resection with and without a nephron-sparing procedure.

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Aim: Haemorrhoids are varicose veins of the rectum covered by mucosa at or near the anal canal. They are normally asymptomatic, can occur at any age and affect both males and females. Haemorrhoids are common in young women and commoner during pregnancy and the puerperium.

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Article Synopsis
  • This study explored the potential of intravenous delivery of a miR-21 inhibitor using lipid nanoparticles to treat head and neck squamous cell carcinoma (HNSCC) in mouse models.
  • The results showed that the miR-21 inhibitor significantly reduced tumor growth and miR-21 expression compared to a control.
  • Additionally, the treatment led to noticeable tumor cell death, suggesting that this method could be an effective therapy for HNSCC.
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Burkholderia contaminans, a species of the Burkholderia cepacia complex-prevalent in certain Latin-American and European countries-can cause chronic pulmonary infection in persons with cystic fibrosis. Our aim was to gain insights into long-term lung infections with a focus on correlating how bacterial phenotypic traits in the chronic infection impact on patients' clinical outcome. Genotypic characteristics of 85 B.

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Diabetes mellitus is a global health problem. Diabetic nephropathy is a common complication of diabetes mellitus and the leading cause of end-stage renal disease. The clinical course, response to therapy, and prognosis of nephropathy are worse in diabetic than in non-diabetic patients.

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The use of cell and tissue-based methods in basic, applied and regulatory science has been increasing exponentially. Animal-derived components, including serum, coating materials, growth factors and antibodies are routinely used in cell/tissue cultures and in general laboratory practices. In addition to ethical issues, the use and production of animal-derived materials and reagents raises many scientific concerns, generally associated with presence of undefined components and batch-to-batch variability, which may compromise experimental reproducibility.

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  • A study found that adding immune checkpoint inhibitors to chemotherapy effectively treats extensive-stage small cell lung cancer, but there's no proven second-line treatment for patients who have already received these therapies.* -
  • Researchers evaluated the safety and efficacy of amrubicin as a second-line treatment in 150 patients, comparing those previously treated with immune checkpoint inhibitors to those who weren't.* -
  • Results showed no significant differences in treatment effectiveness or adverse events between the two patient groups, indicating that prior immune checkpoint inhibitor treatment does not negatively impact amrubicin's efficacy or safety.*
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Background And Aim: After the global spread of the novel coronavirus disease 2019 (COVID-19), research has concentrated its efforts on several aspects of the epidemiological burden of pandemic. In this frame, the presented study follows a previous analysis of the temporal link between cases and deaths during the first epidemic wave (Phase 1) in Italy (March-June 2020).

Methods: We here analyze the COVID-19 epidemic in the time span from March 2020 to June 2021.

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It is well known that several viruses, as well as SARS-CoV-2, can be transmitted through airborne diffusion of saliva micro-droplets. For this reason, many research groups have devoted their efforts in order to gain new insight into the transport of fluids and particles originated from human respiratory tracts. This paper aims to provide a contribution to the numerical modeling of saliva droplets' diffusion produced by coughing.

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Article Synopsis
  • Kidney transplant recipients and those on the waiting list face a higher risk of severe COVID-19 due to their immunosuppressive status, compounded by other health issues like obesity and diabetes.
  • The COVID-19 pandemic has significantly decreased kidney transplant procedures globally, as hospitals prioritize COVID-19 cases and patients are hesitant to seek care due to increased infection risks.
  • The review highlights the negative impact of SARS-CoV-2 on kidney health and the challenges it poses to the kidney transplant system overall.
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Background: Contrast-enhanced intraoperative ultrasonography (CEIOUS) and indocyanine green fluorescence were interesting tool for the visualization of intrahepatic neoplastic nodules. The combinations of the 2 technologies could increase tumor detection and the radicality of resection, allowing the use of a pure laparoscopic approach.

Methods: The patient was an 81-year-old man with a history of hypertension and treated hepatitis C infection, with a sustained serological response from 2018, previously undergoing laparotomic resection for hepatocellular carcinoma (HCC) in segment 8.

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spp. of the human colonic microbiome degrade complex arabinoxylans from dietary fiber and release ferulic acid. Several studies have demonstrated the beneficial effects of ferulic acid.

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Background And Aim: While the entire world is still experiencing the dramatic emergency due to SARS-CoV-2, Italy has a prominent position since it has been the locus of the first major outbreak among Western countries. The aim of this study is the evaluation of temporal connection between SARS-CoV-2 positive tests (cases) and deaths in Italy in the first wave of the epidemic.

Methods: A temporal link between cases and deaths was determined by comparing their daily/weekly trends using surveillance data of the period March 2-June 2020.

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Background: Microinvasion (MI), defined as infiltration of the portal or hepatic vein or bile duct and intrahepatic metastasis are accurate indicators of a poor prognosis for mall hepatocellular carcinomas (HCC). A previous study showed that intraoperative ultrasound (IOUS) definition of MI-HCC had a high concordance with histological findings. Aim of this study is to evaluate overall survival and recurrence patterns of patients with MI-HCC submitted to hepatic resection (HR) or laparoscopic ablation therapies (LAT).

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No well-established prognostic or predictive molecular markers of small-cell lung cancer (SCLC) are currently available; therefore, all patients receive standard treatment. Adequate quantities and quality of tissue samples are frequently unavailable to perform a molecular analysis of SCLC, which appears more heterogeneous and dynamic than expected. The implementation of techniques to study circulating tumor cells could offer a suitable alternative to expand the knowledge of the molecular basis of a tumor.

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Lung cancer is the leading cause of mortality for cancer worldwide. A point mutation in exon 21 of the epidermal growth factor receptor resulting in the substitution of arginine for leucine at position 858 (L858R) is a frequent cause of lung adenocarcinoma. Tyrosine kinase inhibitors are effective for treating patients with lung cancer associated with mutant epidermal growth factor receptors but most tumors become resistant shortly after treatment.

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Kidney fibrosis is the common consequence of chronic kidney diseases that inexorably progresses to end-stage kidney disease with organ failure treatable only with replacement therapy. Since transforming growth factor-β1 is the main player in the pathogenesis of kidney fibrosis, we posed the hypothesis that recombinant thrombomodulin can ameliorate transforming growth factor-β1-mediated progressive kidney fibrosis and failure. To interrogate our hypothesis, we generated a novel glomerulus-specific human transforming growth factor-β1 transgenic mouse to evaluate the therapeutic effect of recombinant thrombomodulin.

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COVID-19 pandemic rendered the surgical approach as well as the surgical indication very complex due to the outstanding consumption of public health system' resources, especially in the intensive care subdivision. A multidisciplinary team-based strategy is necessary to adapt guidelines and medical practices to the actual situation. The aim of this study is to evaluate the changes in the therapeutic algorithm in a small group of patients with hepatocellular carcinoma (HCC) enlisted for surgery during the COVID-19 outbreak.

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Idiopathic pulmonary fibrosis (IPF) is a chronic and fatal disease of unknown etiology; however, apoptosis of lung alveolar epithelial cells plays a role in disease progression. This intractable disease is associated with increased abundance of Staphylococcus and Streptococcus in the lungs, yet their roles in disease pathogenesis remain elusive. Here, we report that Staphylococcus nepalensis releases corisin, a peptide conserved in diverse staphylococci, to induce apoptosis of lung epithelial cells.

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The optimal treatment for hepatocellular carcinoma (HCC) is surgical resection. However, only a small percentage of patients are amenable to this option. Percutaneous radiofrequency interstitial thermal ablation (TA) proved to be effective in the treatment of unresectable HCC.

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