Publications by authors named "Marchi L"

Myeloid sarcoma (MS) is an extramedullary localization of immature granulocyte cells that can occur in association with acute myeloid leukemia (AML). Gastrointestinal involvement is relatively common in MS, but exclusive colonic localization is a rare occurrence. Here, we report on a 53-year-old male patient affected by AML developing a severe abdominal pain caused by intestinal perforation requiring surgical intervention.

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Background: Current endogenous indicators utilised in avian medicine are not sensitive enough to detect renal disease in its early stages. Alternative markers ought to be examined as a result. The aim is to investigate the accuracy of limited-sampling models for glomerular filtration rate (GFR) in adult seagulls using plasma clearance of iohexol (IOX).

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Objective: This study aimed to understand the dynamics of including Pathologists' Assistants in a surgical pathology department.

Methods: A qualitative ethnographic study employed covert participant observation and semi-structured interviews. Field notes and interview transcripts were descriptively analysed to identify categories.

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Human activity exposes organisms in marine ecosystems to numerous stressors, including rising seawater temperatures and antibiotic contamination. The present study investigated the impacts of environmentally relevant concentrations of the fluoroquinolone (FQ) antibiotic enrofloxacin (ENR), specifically 5 and 500 ng/L, in Mytilus galloprovincialis under ambient (20 °C) and predicted warming (25 °C) conditions after 14 days of exposure, followed by a 14-day recovery period in the absence of ENR. The chemical analyses revealed significant variability in bioaccumulation in mussel tissues.

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Fluoroquinolone antibiotics (FQs) are emerging pollutants frequently detected in aquatic environments. However, their impact on marine invertebrates remains underexplored. This study investigated the responses at subcellular level in the Mediterranean mussel () exposed to three veterinary FQs, marbofloxacin (MARB), sarafloxacin (SARA), and difloxacin (DI), at concentrations considered relevant to environmental conditions.

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Bovine respiratory disease (BRD) represents a significant challenge in cattle management due to its multifactorial nature and lack of a gold standard diagnostic method. Procalcitonin (PCT) has emerged as a potential biomarker for bacterial infections in various species, including cattle. This study aimed to investigate plasma PCT concentration variations in pre-weaned dairy calves categorized as BRD-positive using clinical scores (WRSC; BRD-positive ≥5), thoracic ultrasonography with two cut-off (TUS; BRD-positive ≥1 or ≥3), or a combination of both methods (WRSC/TUS1cm or WRSC/TUS3cm).

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Article Synopsis
  • Understanding the combined effects of multiple environmental stressors, like UV-filters and ocean acidification, on marine species is crucial for addressing ecological challenges.
  • The study focused on two UV-filters (4-MBC and BP-3) and their impacts on the reproductive health and performance of mussels under different pH levels, with findings indicating that low pH significantly worsened the effects of these contaminants.
  • Results showed that while sperm cells could adapt somewhat to low pH, adult mussels faced severe physiological and biochemical declines, emphasizing the need for further research on long-term consequences for mussel populations and their ecosystems.
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The study aimed to investigate the in vitro effects of the fluoroquinolone antibiotics (FQs) Ciprofloxacin (CIP), Enrofloxacin (ENR) and Danofloxacin (DAN) on the mussel Mytilus galloprovincialis exposed to environmentally relevant concentrations. In vitro exposure was performed on subcellular fractions of the digestive gland and gills through a multi-biomarker approach, which included the assessment of cellular damage, antioxidant and biotransformation enzyme activities, neurotoxicity, and DNA single-strand breaks (DNAssb). Results showed a decrease in protein carbonyl content in the gills when exposed to all concentrations of ENR.

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  • - Monitoring antimicrobial use is vital for understanding prescribing trends and forming effective stewardship programs to combat resistance; this study focuses on the veterinary practices at the University of Pisa.
  • - The study analyzed antimicrobial prescriptions for 1,164 non-surgical cats in 2021 and 2022, revealing that amoxicillin-clavulanic acid was most used in internal medicine while ampicillin dominated in intensive care, with 25% being critically important antimicrobials.
  • - Results indicated that most antimicrobials were prescribed for urinary, gastroenteric, respiratory, and integumentary conditions, but only 11% were backed by susceptibility tests, highlighting the need for improvements in targeted therapy and awareness of the broader effects of antimicrobial
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Obesity has been recognized as a potential risk factor for the carcinogenesis of differentiated thyroid cancer (DTC). The aim of this observational study was to investigate the prognostic role of BMI in influencing DTC histopathological aggressiveness and the risk of tumor relapse. We enrolled 257 patients with DTC, consecutively admitted to our Institution between January 2016 and December 2023.

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Article Synopsis
  • * The research examines how these contaminants, alongside rising water temperatures due to climate change, affect the reproductive health and overall performance of Mytilus galloprovincialis mussels.
  • * Key findings indicate that exposure to UV-filters can lead to significant physiological disturbances, including decreased sperm motility and increased oxidative stress, suggesting a threat to mussel populations and their reproductive success under combined environmental stressors.
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Green Chemistry involves applying a set of principles aimed at minimizing the use of hazardous substances in the design, production, and application of chemical products. In recent decades, Ionic Liquids (ILs) have emerged as more environmentally friendly substitutes for traditional organic solvents. This preference is primarily due to their low vapor pressure, which results in minimal atmospheric pollution and enhanced industrial safety.

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Background: Biomarkers predictive of disability outcomes in individual multiple sclerosis (MS) patients undergoing autologous haematopoietic stem cell transplantation (AHSCT) are currently lacking. As correlations between spinal cord atrophy and clinical disability in MS were previously described, in this study spinal cord size was investigated in MS patients treated with AHSCT, exploring whether baseline spinal cord volume may predict disability progression after AHSCT.

Methods: relapsing-remitting (RR-) and secondary-progressive (SP-) MS patients treated with AHSCT (BEAM/ATG regimen) at a single academic centre in Florence, who performed at least two standardized brain magnetic resonance imaging (MRIs) scans (acquired between one-year pre-AHSCT to 5 years after AHSCT) were included.

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Consistent information and standardization procedures regarding the time of storage for frozen samples and the effects of storage time on enzyme activity are still missing in the literature. Thus, we evaluated the effects of different storage temperatures (-20 °C and - 80 °C), three repetitive freeze/thaw cycles, and 24-h mimic transportation on the activities of PON1 (paraoxonase and arylesterase), enzymes involved in the protection and detoxification processes of reactive molecules. PON1 enzymes' activity was validated on serum and heparinized plasma in horses.

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The Blossoming of Ultrasonic Metatransducers.

IEEE Trans Ultrason Ferroelectr Freq Control

September 2024

Key requirements to boost the applicability of ultrasonic systems for in situ, real-time operations are low hardware complexity and low power consumption. These features are not available in present-day systems due to the fact that US inspections are typically achieved through phased arrays featuring a large number of individually controlled piezoelectric transducers and generating huge quantities of data. To minimize the energy and computational requirements, novel devices that feature enhanced functionalities beyond the mere conversion (i.

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Background: Leptomeningeal enhancement (LME) is considered an MRI marker of leptomeningeal inflammation in inflammatory neurological disorders, including multiple sclerosis (MS). To our knowledge, no disease-modifying therapies (DMTs) have been demonstrated to affect LME number or morphology so far.

Methods: Monocentric study investigating the frequency and number of LME in a cohort of people with (pw)MS who performed a 3 T brain MRI with a standardized protocol (including a post-contrast FLAIR sequence), and exploring the impact of autologous hematopoietic stem cell transplantation (AHSCT) on this marker.

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Article Synopsis
  • Drugs are chemical compounds used to treat diseases, but they can enter aquatic environments through wastewater, where they accumulate and affect aquatic organisms.
  • This study focused on the non-steroidal anti-inflammatory drug diclofenac (DIC) and its impact on the mussel Mytilus galloprovincialis at two temperatures (17°C vs. 21°C), finding that higher temperatures decreased the mussel's metabolic capacity and ability to detoxify contaminants.
  • The findings indicate that while DIC combined with increased temperatures can harm mussels, they may adapt over time, and the presence of such drugs in the environment emphasizes the need for a One Health approach to tackle pollution affecting human, animal, and ecosystem health.
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  • Pharmaceuticals like caffeine (CAF) enter aquatic ecosystems mainly through wastewater and hospital waste, raising concerns about their environmental impact, especially under rising temperatures caused by climate change.
  • The study used the mussel Mytilus galloprovincialis to examine the toxicity of different CAF concentrations at 17 °C and 21 °C, observing subcellular effects over 28 days.
  • Findings revealed that higher CAF levels at 17 °C increased metabolism and caused cellular damage, while at 21 °C, the mussels showed antioxidant enzyme induction but still suffered from cellular damage, with a synergistic negative effect when CAF exposure and temperature rise occurred together.
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This study delves into the intricate interplay between ocean acidification (OA), metal bioaccumulation, and cellular responses using mussels (Mytilus galloprovincialis) as bioindicators. For this purpose, environmentally realistic concentrations of isotopically labelled metals (Cd, Cu, Ag, Ce) were added to investigate whether the OA increase would modify metal bioaccumulation and induce adverse effects at the cellular level. The study reveals that while certain elements like Cd and Ag might remain unaffected by OA, the bioavailability of Cu and Ce could potentially escalate, leading to amplified accumulation in marine organisms.

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Background: Anesthesiologists frequently use intraoperative transesophageal echocardiography (TEE) to aid in the diagnosis and management of hemodynamic problems during liver transplantation (LT). Although the use of TEE in US centers continues to increase, data regarding international use are lacking.

Methods: This prospective, global, survey-based study evaluates international experience with TEE for LT.

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The use of antimicrobials has greatly contributed to improving animal health. However, their inappropriate use reduces their effectiveness in treating bacterial infections and contributes to the selection of resistance. This study aimed to retrospectively evaluate the six-year pattern (2017-2022) of antimicrobial use in cats visiting the Veterinary Teaching Hospital (VTH) of the University of Pisa (Italy).

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Iron(II) can show a very rich coordination chemistry with concomitant modulation of its properties as promising functional materials. Metalation of the neutral tridentate nitrogen-donor -coordinating ligand 2,6-bis(2-(methyl)-2-tetrazol-5-yl)pyridine (Mebtp) with Fe(ClO)·6HO through accurate solvent polarity control enables the selective crystallization of [Fe(Mebtp)](ClO)·MeCN·2.75HO (2·MeCN·2.

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Antimicrobial prescriptions of the University of Pisa and their compliance with prudent use recommendations were investigated over 11 years (2011-2021). At least one antimicrobial was always prescribed in surgical prophylaxis for the suture of wounds and in 33% of horses with signs of disease of a body system. Antimicrobials were administered in monotherapy (48%) in fixed dose combinations (21%) and empirical combinations (31%).

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