641 results match your criteria: "University " Federico II" School of Medicine and Surgery[Affiliation]"

Lipophilicity profiling and cell viability assessment of a selected panel of endocrine disruptors.

Chemosphere

February 2023

Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano, 49, 80131, Naples, Italy. Electronic address:

Endocrine disruptors are chemicals widely used worldwide by industries in a variety of applications. Routinely exposure to these chemicals, even if at low doses, can cause damage effects on human health. In the present study, we evaluated toxic effects of nine chemicals, among which phthalates, using various cell lines to inspect their capability to interfere with cell proliferation and viability.

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Helicobacter pullorum is recognized as an emerging food-borne pathogen that may colonize the intestinal tract and the liver of avian species and humans causing several gastrointestinal and liver diseases. However, not all strains are reported to be capable of causing clinical disease, thus making poultry as reservoir for the zoonotic transmission of the infection through carcass contamination of broilers at slaughter. In poultry, the prevalence of this bacterium could be underestimated and the available data mainly refer to conventional rearing systems, whereas free-range and organic breedings have been poorly investigated.

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Article Synopsis
  • Endocrine-disrupting chemicals (EDCs), both natural and synthetic, can negatively affect the endocrine system, leading to various health issues in humans and wildlife, with many pesticides identified as EDCs.
  • The study examines how low doses of specific pesticides (atrazine, cypermethrin, and vinclozolin) impact microRNA (miRNA) expression in SH-SY5Y cells, focusing on the downregulation of miR-29b-3p due to vinclozolin exposure.
  • This downregulation may increase the expression of certain genes (ADAM12 and CDK6), potentially resulting in cancer-promoting effects by activating specific signaling pathways while inhibiting tumor suppressor
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Alzheimer's disease (AD) is one of the most prevalent forms of neurodegenerative disorders. Previously, we have shown that in vivo administration of an IL-17 neutralizing antibody (IL-17Ab) rescues amyloid-β-induced neuro-inflammation and memory impairment, demonstrating the pivotal role of IL-17 in AD-derived cognitive deficit. Recently, AD has been recognized as a more intriguing pathology affecting vascular networks and platelet function.

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Galectin-9: A novel promoter of atherosclerosis progression.

Atherosclerosis

December 2022

Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom; ImmunoPharmaLab, Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy. Electronic address:

Background And Aims: Atherosclerosis is widely accepted to be an inflammatory disease driven by lipid accumulation and leukocyte recruitment. More recently, galectins, a family of β-galactoside binding proteins, have been shown to play a role in leukocyte recruitment among other immunomodulatory functions. Galectin (Gal) -9, a tandem repeat type galectin expressed by the endothelium in inflammatory environments, has been proposed to promote leukocyte recruitment.

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Objective: In the frame of the Uric Acid Right for Heart Health (URRAH) study, a nationwide multicenter study involving adult participants recruited on a regional community basis from all the territory of Italy under the patronage of the Working Group on Uric Acid and Cardiovascular Risk of the Italian Society of Hypertension, we searched for the cut-off values of the ratio between serum uric acid (SUA) and serum creatinine (sCr) able to predict cardiovascular (CV) events.

Methods: Among 20 724 participants followed-up for 126 ± 64 months, after detecting cut-off by the receiver operating characteristic curves, we calculated by Cox models adjusted for confounders having CV events as dependent variable the hazard ratio (HR) of SUA/sCr > cut-off. We also verified if the role of cut-off varied with increasing SUA/sCr.

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Untargeted and targeted LC-MS and data processing workflow for the comprehensive analysis of oligopeptides from cyanobacteria.

Chemosphere

January 2023

University of Napoli Federico II, Department of Pharmacy, School of Medicine and Surgery, Via D. Montesano 49, 80131, Napoli, Italy; CoNISMa - National Inter-University Consortium for Marine Sciences, Piazzale Flaminio 9, 00196, Rome, Italy.

Cyanobacteria produce a plethora of structurally diverse bioactive secondary metabolites, including cyanotoxins which pose a serious threat to humans and other living organisms worldwide. Currently, a wide variety of mass spectrometry-based methods for determination of microcystins (MCs), the most commonly occurring and studied class of cyanotoxins, have been developed and employed for research and monitoring purposes. The scarcity of commercially available reference materials, together with the ever-growing range of mass spectrometers and analytical approaches, make the accuracy of quantitative analyses a critical point to be carefully investigated in view of a reliable risk evaluation.

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Eugenol and linalool are often the most abundant volatile compounds found in basil ( L., Lamiaceae) leaves, and they are interesting for the aroma they provide and for their numerous beneficial bioactivities. Their determination is thus needed for several purposes.

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Structural, functional, and molecular alterations in excitatory spines are a common hallmark of many neurodevelopmental disorders including intellectual disability and autism. Here, we describe an optimized methodology, based on combined use of DiI and immunofluorescence, for rapid and sensitive characterization of the structure and composition of spines in native brain tissue. We successfully demonstrate the applicability of this approach by examining the properties of hippocampal spines in juvenile KO mice, a mouse model of Fragile X Syndrome.

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Salivary gland cancer (SGC) is an uncommon and heterogeneous disease that accounts for around 8.5% of all head and neck cancers. MicroRNAs (miRNAs) consist of a class of highly conserved, short, single-stranded segments (18-25 nucleotides) of noncoding RNA that represent key gene-transcription regulators in physiological and pathological human conditions.

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Adrenergic β2-agonists represent a mainstay in asthma management. Their chronic use has been associated with decreased bronchoprotection and rebound hyperresponsiveness. Here we investigate on the possible therapeutic advantage of a pharmacological association of β2-agonists with montelukast, a highly selective leukotriene receptor antagonist, in modulating bronchial reactivity and controlling asthma features.

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Article Synopsis
  • Home blood pressure monitoring (HBPM) may be a reliable alternative to ambulatory blood pressure monitoring (ABPM) for hypertension management, but correct techniques are essential for accuracy.
  • A survey conducted over two years with 643 hypertensive patients revealed that although 71% of participants were informed about HBPM practices, many still made significant errors in measurement techniques.
  • Proper HBPM practices correlate with better health outcomes, indicating that enhancing patient education on accurate measurement could improve hypertension management.
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Efficacy of selective histone deacetylase 6 inhibition in mouse models of Pseudomonas aeruginosa infection: A new glimpse for reducing inflammation and infection in cystic fibrosis.

Eur J Pharmacol

December 2022

Department of Pharmacy, Department of Excellence 2018-2022, School of Medicine and Surgery, University of Naples "Federico II", Via D. Montesano 49, I-80131, Naples, Italy. Electronic address:

The latest studies identified the histone deacetylase (HDAC) class of enzymes as strategic components of the complex molecular machinery underlying inflammation in cystic fibrosis (CF). Compelling new support has been provided for HDAC6 isoform as a key player in the generation of the dysregulated proinflammatory phenotype in CF, as well as in the immune response to the persistent bacterial infection accompanying CF patients. We herein provide in vivo proof-of-concept (PoC) of the efficacy of selective HDAC6 inhibition in contrasting the pro-inflammatory phenotype in a mouse model of chronic P.

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Bisphenol A (BPA) is a widespread thyroid disruptor, but evidence about an association with thyroid cancer is weak. Excess body weight is a risk factor for thyroid cancer and affects activity of endocrine disruptors. Aim of the study was to investigate the association between BPA exposure and thyroid cancer, verifying the effect modification related to body weight.

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Asthma is characterized by chronic inflammation and a variable degree of airway hyperresponsiveness (AHR). Our previous papers documented a role for Nociceptin/Orphanin FQ (N/OFQ) and its receptor N/OFQ peptide (NOP) in AHR. Therefore, the aim of this study was to improve the bioavailability of N/OFQ by developing solid lipid nanoparticles (SLNs).

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Several studies indicate a relationship between maternal gut microbiota alteration and increased risk of autism spectrum disorders (ASD) in offspring. The possibility of compensating for such metabolic dysfunction at a very early stage of disease via maternal treatment has not been enough explored. Here, we examined in BTBR mouse model of ASD the effect of maternal treatment with the gut microbial metabolite butyrate (BUT) on the behavioral and synaptic plasticity deficits in juvenile and adult offspring.

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Background And Aims: Congestion is a key driver of morbidity and mortality in heart failure. Implanted haemodynamic monitoring devices might allow early identification and management of congestion. Here, we provide a state-of-the-art review of implanted haemodynamic monitoring devices for patients with heart failure, including a meta-analysis of randomised trials.

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Background: Although local excision (LE) after neoadjuvant treatment (NT) has achieved encouraging oncological outcomes in selected patients, radical surgery still remains the rule when unfavorable pathology occurs. However, there is a risk of undertreating patients not eligible for radical surgery. The aim of this study was to evaluate the outcomes of patients with pathological incomplete response (ypT2) in a multicentre cohort of patients undergoing LE after NT and to compare them with ypT0-is-1 rectal cancers.

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Penicillactonin and preaustinoid C, lactone-containing metabolites from a hot spring sediment Penicillium sp.

Fitoterapia

November 2022

Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via Montesano 49, 80131 Naples, Italy. Electronic address:

Phytochemical investigation of Penicillium sp. RO-11 strain, collected from the sediments of a hydrothermal spring located in the southwestern area of Saudi Arabia, afforded, along with previously isolated compounds, the undescribed polyketides penicillactonin (1), penipyranicin D (4) and isopyrenulin B (5) and the undescribed meroterpenoid preaustinoid C (7). The structures of these compounds were elucidated based on data from mass spectrometry, 1D and 2D NMR, and comparison between experimental and calculated ECD spectra.

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Design and synthesis of functionalized 4-aryl-Catechol derivatives as new antiinflammtory agents with in vivo efficacy.

Eur J Med Chem

December 2022

Department of Science and Technology, University of Sannio, 82100, Benevento, Italy; Advanced Medical Pharma (AMP-Biotec), Biopharmaceutical Innovation Centre, Via Cortenocera, 82030, San Salvatore Telesino, (BN), Italy. Electronic address:

Oxidative stress and inflammation are two conditions that coexist in many multifactorial diseases and the discovery of antioxidants is an attractive approach that can simultaneously tackle two or more therapeutic targets of the arachidonic acid cascade. We report that the simple structural variations on the 4-aryl-benzene-1,2-diol side-arm of the scaffold significantly influence the selectivity against 5-LOX vs 12- and 15-LOX. Derivatives 4 a-l were evaluated for their antioxidant activity, using the DPPH, and ferric ion reducing antioxidant power (FRAP) methods.

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Objective: In psoriatic arthritis (PsA) and rheumatoid arthritis (RA), inflammatory responses are characterized by increased production of pro-inflammatory molecules secreted by various immune cells. The main objectives of our study were: i) to measure levels of pro- and anti-inflammatory cyto-chemokines and soluble factors expressed in both PsA and RA SF; ii) to characterize the phenotype of infiltrated leuko-lymphocytes and; iii) to identify specific synovial biomarkers for both diseases. Notably, Synovial Fluid (SF) samples obtained from PsA and RA populations were compared with SF samples collected from clinically active osteoarthritis (OA) joints.

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Background And Purpose: Transient receptor potential melastatin type-8 (TRPM8) is a cold-sensitive cation channel protein belonging to the TRP superfamily of ion channels. Here, we reveal the molecular mechanism of TRPM8 and its clinical relevance in colorectal cancer (CRC).

Experimental Approach: TRPM8 expression and its correlation with the survival rate of CRC patients was analysed.

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Background: Since the introduction of minimally invasive surgery, new techniques like transabdominal preperitoneal (TAPP) repair have progressively gained acceptance for the treatment of groin hernia. Laparoscopic TAPP (LTAPP) is recommended for bilateral repairs. Likewise, the introduction of robotic platforms has promised additional surgical benefits for robotic TAPP (RTAPP), which are yet to be confirmed.

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Background: Type-one diabetes (T1D), a chronic autoimmune disease with marked inflammatory responses, is associated with infertility complications and implications. Based on the anti-diabetic, antioxidant, and anti-hyperlipidemic potential of (PO), this study aimed to evaluate the protective effect of this plant extract on streptozotocin-induced type-I-diabetes-associated reproductive system dysfunction and inflammation.

Methods: Male rats were randomly divided into four experimental groups: control, diabetic, and treatment/s (PO extract at 100 or 300 mg/kg/daily).

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