3,703 results match your criteria: "Universita degli Studi di Firenze[Affiliation]"

C measurements on the carbonaceous fractions of atmospheric aerosol are an important tool for source apportionment. In this paper, a C-based source apportionment study was carried out on samples collected during winter 2021 at an urban background site in the Po Valley, one of the main pollution hot-spot areas in Europe. The samples were prepared using MISSMARPLE (MIlan Small-SaMple Automated Radiocarbon Preparation LinE for atmospheric aerosol), a recently developed sample preparation line for C measurements on atmospheric aerosol carbon fractions, specifically targeting small samples (about 50 μgC).

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Exploiting Bacterial Pigmentation for Non-Destructive Detection of Seed-Borne Pathogens by Using Photoacoustic Techniques.

Sensors (Basel)

November 2024

Dipartimento di Scienze e Tecnologie Agrarie, Alimentari Ambientali e Forestali, Laboratorio di Patologia Vegetale Molecolare, Università degli Studi di Firenze, Via della Lastruccia 10, 50019 Sesto Fiorentino, Italy.

Seed-borne pathogens pose a significant threat to global food security. This study focuses on pv. (), a quarantine plant pathogen causing bacterial wilt of common beans.

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Carbapenem-resistant Enterobacterales (CREs) are globally considered to be a major threat to public health. National and international guidelines emphasize the importance of routine active surveillance policies to prevent their transmission. Consequently, screening for the evaluation of the status of colonization by CREs in hospitalized patients in Italy is considered essential to contain and control the spread of these microorganisms and their evolution towards infection.

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The project "Experimentation of new integrated hospital-territory organizational models for the prevention and control of sexually transmitted infections: facilitated diagnostic-care pathways and offer of free targeted screening" was developed as part of the CCM 2019 programme, funded by the Italian Ministry of Health, being coordinated by the Italian National Health Institute (ISS), in collaboration with Sapienza University of Rome. Three clinical units located in Turin, Milan, and Cagliari, specialized in sexually transmitted infection (STI) diagnosis and treatment, and three highly specialized microbiology laboratories located in Trieste, Florence, and Palermo were involved.The objectives were to develop an innovative network model for the treatment of STIs based on multidisciplinary centres with high quality of care for STIs (hub-IST) and territorial structures (spoke-IST), to plan and test integrated facilitated care pathways for STIs, to evaluate the priorities, feasibility, and sustainability of prevention interventions.

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Development of molecularly imprinted polymer-based electrochemical sensors for the detection of UV filters in aquatic ecosystems.

Talanta

December 2024

Surface Engineering and Precision Centre, Faculty of Engineering and Applied Sciences, Cranfield University, MK43 0AL, Bedford, United Kingdom.

The presence of organic UV filters (OUVAs) has been detected worldwide in aquatic ecosystems. These pollutants, originating from various anthropogenic sources, can persist and transform within wastewater treatment plants (WWTPs), posing a potential environmental hazard. In this framework, this research presents electrochemical sensors based on molecularly imprinted polymers (MIPs) for the selective detection of Benzophenone-3 (BP-3) and Octocrylene (OC), two of the OUVA most spread in the aquatic environment, to overcome the analytical challenges related to the quantification of this class of contaminants in wastewater samples.

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Type A aortic dissection is a life-threatening condition that requires immediate surgical intervention. The goal of traditional approaches is to treat the disease promptly, regardless of invasiveness, in order to achieve the quickest surgical outcome. This strategy has been shown to be associated with significant morbidity, extended recovery and postoperative complications.

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Outcomes of Mechanical Thrombectomy in Patients With Acute Basilar Artery Occlusion With Mild to Moderate Symptoms.

Neurology

December 2024

From the Department of Human Neuroscience (E.N., S.L., D.T.), Sapienza University of Rome; Stroke Unit (E.N., F.S.), Ospedale dei Castelli, Ariccia (RM); Department of NEUROFARBA (G.P.), Neuroscience Section, University of Florence; Stroke Unit (A.C., M.D.M.), Policlinico Umberto I, Sapienza University of Rome; Neurology and Stroke Unit (V.S., T.T.), S. Corona Hospital, Pietra Ligure, Italy; Interventional Neurovascular Unit (N. Limbucci), Careggi University Hospital; Careggi University Hospital (P.N.), Florence; AUSL Romagna Cesena (M.R.); Neurologia e Stroke Unit Ospedale Bufalini Cesena (M.L.); UO Neuroradiologia (M. Cosottini); Neurological Institute (G.O.), Azienda Ospedaliero Universitaria Pisana; Dipartimento di Neuroscienze (M.B.), Universitá di Torino; A.O. Cittá della Salute (P.C.), Torino; UO Neuroradiologia (S.V.); Neurologia-Stroke Unit (G. Bigliardi), Ospedale Civile di Baggiovara - AOU di Modena; UOC Neuroradiologia diagnostica e terapeutica AOU Senese (S.C.); UOC Stroke Unit AOU Senese (R.T.), Siena; Dipartimento di Biomedicina e Prevenzione - UOSD radiologia interventistica (V.D.R.); Department of Systems Medicine (M.D.), University of Rome Tor Vergata; IRCCS Istituto di Scienze Neurologiche di Bologna - UOC Neuroradiologia Ospedale Bellaria (L.S.); IRCCS Istituto di Scienze Neurologiche di Bologna (A.Z.), Department of Neurology and Stroke Center, Maggiore Hospital; UOC Neuroradiologia AOU "G. Martino" Messina (M.V.); UOSD Stroke Unit AOU "G. Martino"-Messina (P.L.L.S.); UO Neuroradiologia Ospedale Policlinico San Martino (L.C.); UO Neurologia Ospedale Policlinico San Martino (M.D.S.), Genova, Italy; Neurology Unit (I.C.), University Hospital Arcispedale S. Anna, Ferrara; Dipartimento di Scienze Biomediche (E.F.), Sperimentali e Cliniche, Neuroradiologia, Università degli Studi di Firenze, Ospedale Universitario Careggi; Unità Complessa di Neuroradiologia (R.M.), Azienda Ospedaliero-Universitaria; Dipartimento di Medicina e Chirurgia (A.P.), Università degli Studi di Parma - Programma Stroke Care, Dipartimento di Emergenza-Urgenza, Azienda Ospedaliero-Universitaria, Parma; UOSD Interventistica AOU Salerno (D.G.R.); UOC Neuroradiologia AOU Salerno (G.F.); Radiologia e Neuroradiologia diagnostica e interventistica (S.N.), IRCCS Policlinico San Matteo; UO Neurologia d'Urgenza e Stroke Unit (N. Loizzo), IRCCS Fondazione Mondino, Pavia; UO Neuroradiologia Dip Neuroscienze AZOU Ferrara (A.S.); UO Neurologia Dip Neuroscienze AZOU Ferrara (A.D.V.); Neuroradiology department ospedale di circolo- ASST Settelaghi Varese (R.A.); Stroke Unit - Azienda Ospedaliera Universitaria Integrata Verona (M. Cappellari); UO Neuroradiologia AOU Consorziale Policlinico Bari (D.S.Z.); UOC Neurologia e Stroke Unit "Puca" AOU Consorziale Policlinico Bari (M.P.); SC Neuroradiologia Diagnostica e Interventistica (L.A.), S. Corona Hospital, Pietra Ligure; UO Neuroradiologia interventistica (D.A.); Neurologia d'urgenza e Stroke Unit (S. Marcheselli), IRCCS Humanitas Research Hospital, Rozzano; UOC Neuroradiologia (M.P.G.); UOC Neurologia (G. Boero), Ospedale "SS. Annunziata", Taranto; IRCCS Neuromed (S. Mangiafico), Pozzilli (IS), Italy; Department of Clinical Neuroscience (N.A.), Karolinska Institutet, Stockholm, Sweden; Stroke Center EOC (C.W.C.), Neurocentre of Southern Switzerland; and Faculty of Biomedical Sciences (C.W.C.), Università della Svizzera Italiana, Lugano, Switzerland.

Background And Objectives: The benefit of mechanical thrombectomy (MT) in patients with acute ischemic stroke (AIS) with basilar artery occlusion (BAO) and a baseline National Institute of Health Stroke Scale (NIHSS) score <10 is unclear because this subpopulation has been substantially excluded from large clinical trials. The aim of our study was to determine whether MT ± IV thrombolysis (IVT) improves functional outcomes compared with IVT alone in patients with BAO and a NIHSS score <10.

Methods: We emulated a hypothetical trial including adult patients with BAO, a baseline NIHSS score <10, and prestroke modified Rankin scale (mRS) scores 0-2, comparing MT (±IVT) with IVT alone.

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Stroke thrombectomy in the elderly: A propensity score matched study on a nationwide real-world registry.

Eur Stroke J

November 2024

IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Neurologia e Rete Stroke Metropolitana, Bologna, Italy.

Introduction: Data on safety and efficacy of endovascular thrombectomy (EVT) for acute ischemic stroke in older patients are limited and controversial, and people aged 80 or older were under-represented in randomized trials. Our aim was to assess EVT effect for ischemic stroke patients aged ⩾80 at a nationwide level.

Patients And Methods: The cohort included stroke patients undergoing EVT from the Italian Registry of Endovascular Treatment in Acute Stroke (IRETAS).

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New Structural Features of Isatin Dihydrothiazole Hybrids for Selective Carbonic Anhydrase Inhibitors.

ACS Med Chem Lett

November 2024

Department of Life and Environmental Sciences, Cittadella Universitaria, University of Cagliari, sp8 09042 Monserrato, Cagliari 09124, Italy.

Chemotherapeutic agents have remained the first-line treatment option for advanced-stage cancers when surgery or radiation therapy is not viable. Human carbonic anhydrase (hCA) isoforms IX and XII have been validated as anticancer targets. In particular, hCA IX is overexpressed in several solid tumor cells.

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Exploiting High Order Magnetic Anisotropy for Advanced Magnetocaloric Refrigerants.

Angew Chem Int Ed Engl

November 2024

Department of Chemistry "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze, Via della Lastruccia 3, 50019, Sesto F.no (FI), Italy.

Three new 3 d-4 f complexes of general formula trans-[MF(py)][LnDOTA] (M=Cr or Co, Ln=Dy or Y, py=pyridine and DOTA=tetraazacyclododecane-N,N',N'',N'''-tetraacetate) have been synthetised. The fluoride-bridged systems were designed to achieve perfect tetragonal symmetry by combining four-fold symmetric lanthanide and transition metal building blocks. From single crystal measurements, an unprecedented switch of the tetragonal anisotropy of the Dy complexes has been observed.

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[Not Available].

J Prev Med Hyg

September 2024

Sezione di Igiene, Dipartimento Universitario di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Roma.

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Recently, naturally occurring linear 1,4-glycans have attracted remarkable attention for their activity in cancer and neurodegenerative disease treatment. Classical chemical synthetic strategies for linear 1,4-oligosaccharides are considerably time-consuming due to orthogonal protection/deprotection, the introduction of leaving groups, and various forms of activation of the glycosylation reaction. Herein, we present a new one-pot microwave-activated reiterative assembly of glycal-derived vinyl epoxides in an uncatalyzed substrate-dependent stereospecific process for the preparation of both β-1,4-d-Gulo and α-1,4-d-Manno oligosaccharides.

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Diabetes mellitus is one of the most frequent metabolic diseases associated with hyperglycemia. Although antidiabetic drugs reduce hyperglycemia, diabetic patients suffer from abnormal fluctuations in blood glucose levels leading to the onset of long-term complications. Aldose reductase inhibitors are considered a promising strategy for regulating the occurrence of diabetic-specific comorbidities.

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This work reports the engineering and functional properties of an emerging class of heterobimetallic 3d-4f ionic complexes designed with cobalt and rare-earth (RE) metals. We present a comprehensive examination of the structural, magnetic, optical, and thermal properties of the heterobimetallic ionic complexes with the general formula [Co(hfa)][RE(hfa)tetraglyme] (RE = Dy, Eu, and Y), where the metal centres are coordinated by hexafluoroacetylacetonate (Hhfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedione), β-diketone and tetraglyme (2,5,8,11,14-pentaoxapentadecane) polyether. Structural analysis reveals an octahedral coordination geometry enveloping the cobalt(II) centre, characterized by inherent symmetry properties consistent across the derivatives, while a capped square-antiprism coordination polyhedron is observed for the RE ions.

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This large multicenter study of 37 magnetic resonance imaging scanners aimed at characterizing, for the first time, spatial profiles of inaccuracy (namely, Δ-profiles) in apparent diffusion coefficient (ADC) values with varying acquisition plan orientation and diffusion weighting gradient direction, using a statistical approach exploiting unsupervised clustering analysis. A diffusion-weighted imaging (DWI) protocol (b-value: 0-200-400-600-800-1000 s mm) with different combinations of acquisition plan orientation (axial/sagittal/coronal) and diffusion weighting gradient direction (anterior-posterior/left-right/feet-head) was acquired on a standard water phantom. For each acquisition setup, Δ-profiles along the 3 main orthogonal directions were characterized by fitting data with a second order polynomial function ().

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The symbiotic system Azolla filiculoides-Trichormus azollae was exposed for ten days to environmentally relevant concentrations (i.e. 0.

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The electric dipoles of proteins in a biolayer determine their dielectric properties through the polarization density P. Hence, its reproducibility is crucial for applications, particularly in bioelectronics. Biolayers encompassing capturing antibodies covalently bound at a biosensing interface are generally preferred for their assumed higher stability.

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Article Synopsis
  • F nuclei are useful for monitoring protein interactions in NMR spectroscopy.
  • While methods exist to add fluorine to proteins, techniques for mammalian cells are lacking.
  • This study introduces an affordable method to create fluorotryptophan for use in proteins, specifically in carbonic anhydrase 2 and superoxide dismutase, using HEK cell expression.
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Background: Sulfonamide derivatives are well-reported hCA IX inhibitors; however, they inhibit all types of hCA without any selectivity, leading to severe adverse effects. Hence, developing a novel nonsulfonamide class of tumor-associated hCA IX inhibitors through non-classical inhibition may provide greater selectivity and better pharmacokinetics.

Objective: The objective of this study was to develop non-sulfonamide derivatives as potential human carbonic anhydrase (hCA) inhibitors and develop a new series of chromene-linked bis-indole derivatives.

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First prepared in the late 70s, the pro-ligand 1,3-bis(3,5-dioxo-1-hexyl)benzene (Hbdhb) contains two acetoacetyl terminations linked to a central 1,3-phenylene unit through dimethylene bridges. Since each termination can be either in diketonic or keto-enolic form, in organic solution it exists as a mixture of three spectroscopically resolvable tautomers. In the presence of pyridine, Co and the bdhb anion form a crystalline dimeric compound with formula [Co(bdhb)(py)] (2) and a Co⋯Co separation of more than 11 Å.

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Ever since the Earth has witnessed the dawn of mankind it has had to deal with conflicts and their consequences. The number of ongoing conflicts continues to increase year by year, as does the power of the weapons at stake. Consequently, also increasing is the impact of warfare on the total environment, which is already in crisis due to climate change and exponential population growth.

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In laboratory medicine, due to the lack of sample availability and resources, measurements of many quantities of interest are commonly collected over a few samples, making statistical inference particularly challenging. In this context, several hypotheses can be tested, and studies are not often powered accordingly. We present a semiparametric Bayesian approach to effectively test multiple hypotheses applied to an experiment that aims to identify cytokines involved in Crohn's disease (CD) infection that may be ongoing in multiple tissues.

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Background: Congenital anomalies of the knee are a spectrum of rare disorders with wide clinical and genetic variability, which are mainly due to the complex processes underlying knee development. Despite progresses in understanding pathomechanisms and associated genes, many patients remain undiagnosed.

Objective: To uncover the genetic bases of a congenital patellar dislocation affecting multiple family members with variable severity.

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