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Michelle Rychalsky, Meghan Rowcliffe, Jessica Vital-Carona, Laura Broome, Sarah Kelly, Matthew Bizzarro
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
Valentina Bizzarro, Raffaella Belvedere, Vincenzo Migliaro, Elena Romano, Luca Parente, Antonello Petrella
Annexin A1 (ANXA1) is a Ca(2+)-binding protein over-expressed in the invasive stages of prostate cancer (PCa) development; however, its role in this tumor metastatization is largely unknown. Moreover, hypoxic conditions in solid tumors have been related to poor prognosis in PCa patients. We have previously demonstrated that ANXA1 is implicated in the acquisition of chemo-resistant features in DU145 PCa cells conferring them a mesenchymal/metastatic phenotype. In this study, we have investigated the mechanisms by which ANXA1 regulates metastatic behavior in LNCaP, DU145 and PC3 cells exposed to hypoxia...
November 11, 2016: Cell Adhesion & Migration
Esther Diana Rossi, Maurizio Martini, Tommaso Bizzarro, Fernando Schmitt, Adhemar Longatto-Filho, Luigi Maria Larocca
This review article deals with the analysis and the detection of the morphological features associated with somatic mutations, mostly BRAFV600E mutation, on both cytological and histological samples of carcinomas. Few authors demonstrated that some architectural and specific cellular findings (i.e. polygonal eosinophilic cells defined as "plump cells" and sickle-shaped nuclei) are able to predict BRAF V600E mutation in both cytological and histological samples of papillary thyroid carcinoma (PTC) as well as in other carcinomas...
October 11, 2016: Oncotarget
Tommaso Bizzarro, Maurizio Martini, Sara Capodimonti, Patrizia Straccia, Celestino Pio Lombardi, Alfredo Pontecorvi, Luigi Maria Larocca, Esther Diana Rossi
BACKGROUND: Noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) represents a challenge for the diagnosis and management of thyroid carcinoma. Some authors have proposed histological criteria that are able to distinguish NIFTPs from invasive follicular variant of papillary thyroid carcinoma (I-FVPTC). Hence, NIFTPs may have repercussions in the diagnostic categories on fine-needle aspiration. In the current study, the authors evaluated the criteria for NIFTPs on liquid-based cytology samples...
October 2016: Cancer
Maria Gabriella Vita, Dorina Tiple, Alessandra Bizzarro, Anna Ladogana, Elisa Colaizzo, Sabina Capellari, Marcello Rossi, Piero Parchi, Carlo Masullo, Maurizio Pocchiari
We report a case of rapidly evolving neurological disease in a patient with neuropathological lesions of Creutzfeldt-Jakob disease (CJD), Lewy body dementia (LBD), chronic subcortical vascular encephalopathy and meningothelial meningioma. The coexistence of severe multiple pathologies in a single patient strengthens the need to perform accurate clinical differential diagnoses in rapidly progressive dementias.
September 16, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
A Carducci, M Cargnelutti, F Tassinari, A Bizzarro, G Cordio, S Carletti, L Maccarini, G Pelissero
BACKGROUND: Non-critical medical devices, as stethoscopes, have long been considered as vectors in microorganisms' transmission. Cleaning standards for non-critical medical equipment are often unclear. This study was designed to assess the attitude of General Practitioners (GPs) towards cleaning their stethoscope and the degree of microbiological contamination of doctor's instrument in outpatient setting. STUDY DESIGN: Observational, crossover study. METHODS: A structured questionnaire was administered to GPs to test their knowledge about medical instrument's cleanliness recommendations and the surface of the diaphragm of their stethoscopes was analyzed for bacteriological isolates using mass spectrometry technique...
September 2016: Annali di Igiene: Medicina Preventiva e di Comunità
Mia B Olsen, Daniel Wielandt, Martin Schiller, Elishevah M M E Van Kooten, Martin Bizzarro
We report on the petrology, magnesium isotopes and mass-independent (54)Cr/(52)Cr compositions (μ(54)Cr) of 42 chondrules from CV (Vigarano and NWA 3118) and CR (NWA 6043, NWA 801 and LAP 02342) chondrites. All sampled chondrules are classified as type IA or type IAB, have low (27)Al/(24)Mg ratios (0.04-0.27) and display little or no evidence for secondary alteration processes. The CV and CR chondrules show variable (25)Mg/(24)Mg and (26)Mg/(24)Mg values corresponding to a range of mass-dependent fractionation of ~500 ppm (parts per million) per atomic mass unit...
October 15, 2016: Geochimica et Cosmochimica Acta
Rosario Randino, Ilaria Moronese, Elena Cini, Valentina Bizzarro, Marco Persico, Manuela Grimaldi, Mario Scrima, Anna Maria D Ursi, Ettore Novellino, Eduardo Sobarzo-Sánchez, Luca Rastrelli, Caterina Fattorusso, Antonello Petrella, Manuela Rodriquez, Maurizio Taddei
Synthesis, computational study and biological evaluation of peptidomimetic analogues of FR235222 (3), a natural immunosuppressant and HDAC inhibitor, have been reported. These new compounds, bearing α-hydroxyketone moiety, as more stable zinc binding group (ZBG), were evaluated in vitro as HDAC inhibitors against the human HDACs isoforms 1-9 and in cellular antiproliferative assays on U937 human leukemia cell line. The 1,4-benzodiazepin-2,5-dione (BDZ), capping group and the natural ZBG, (S,R)-2-amino-9-hydroxy-8-oxodecanoic acid (Ahoda), were evaluated in order to probe HDAC inhibition and/or paralogue selectivity...
August 24, 2016: Current Topics in Medicinal Chemistry
Giuseppe Bellastella, Maria Ida Maiorino, Antonio Bizzarro, Dario Giugliano, Katherine Esposito, Antonio Bellastella, Annamaria De Bellis
PURPOSE: This publication reviews the accepted knowledges and the findings still discussed on several features of autoimmune hypophysitis, including the most recently described forms, such as IgG4 and cancer immunotherapy- related hypophysitis. METHODS: The most characteristic findings and the pending controversies were derived from a literature review and previous personal experiences. A single paragraph focused on some atypical examples of the disease presenting under confounding pretences...
December 2016: Pituitary
Esther Diana Rossi, Tommaso Bizzarro, Sara Granja, Maurizio Martini, Sara Capodimonti, Emilia Luca, Guido Fadda, Celestino Pio Lombardi, Alfredo Pontecorvi, Luigi Maria Larocca, Fatima Baltazar, Fernando Schmitt
BRAF (V600E) mutation, usually performed by DNA techniques, is one of the most common diagnostic markers in papillary thyroid carcinoma. Few papers have demonstrated that plump cells (eosinophilic cytoplasms and papillary thyroid carcinoma nuclei) and peculiar sickle-shaped nuclei represent morphological features of BRAF (V600E) on papillary thyroid carcinomas. These features seem to be linked to glycolytic phenotype whereby monocarboxylate transporters 1-4 are hypothesized to have a dominant role as lactate transporters...
August 2, 2016: Endocrine
J C Holst, C Paton, D Wielandt, M Bizzarro
We present high precision, low- and high-resolution tungsten isotope measurements of iron meteorites Cape York (IIIAB), Rhine Villa (IIIE), Bendego (IC), and the IVB iron meteorites Tlacotepec, Skookum, and Weaver Mountains, as well as CI chondrite Ivuna, a CV3 chondrite refractory inclusion (CAI BE), and terrestrial standards. Our high precision tungsten isotope data show that the distribution of the rare p-process nuclide (180)W is homogeneous among chondrites, iron meteorites, and the refractory inclusion...
September 3, 2015: Meteoritics & Planetary Science
K K Larsen, M Schiller, M Bizzarro
The decay of radioactive (26)Al to (26)Mg (half-life of 730,000 years) is postulated to have been the main energy source promoting asteroidal melting and differentiation in the nascent solar system. High-resolution chronological information provided by the (26)Al-(26)Mg decay system is, therefore, intrinsically linked to the thermal evolution of early-formed planetesimals. In this paper, we explore the timing and style of asteroidal differentiation by combining high-precision Mg isotope measurements of meteorites with thermal evolution models for planetesimals...
March 1, 2016: Geochimica et Cosmochimica Acta
Nikitha Susan Saji, Daniel Wielandt, Chad Paton, Martin Bizzarro
We report novel techniques allowing the measurement of Nd-isotope ratios with unprecedented accuracy and precision by multi-collector inductively coupled plasma mass spectrometry. Using the new protocol, we have measured the Nd-isotopic composition of rock and synthetic Nd standards as well as that of the Allende carbonaceous chondrite. Analyses of BCR-2, BHVO-2 and GSP-2 rock standards yield mass-independent compositions identical to the JNdi-1 Nd-reference standard, with an external reproducibility of 2.4, 1...
July 1, 2016: Journal of Analytical Atomic Spectrometry
Raffaella Belvedere, Valentina Bizzarro, Giovanni Forte, Fabrizio Dal Piaz, Luca Parente, Antonello Petrella
Annexin A1 (ANXA1) is a Ca(2+)-binding protein over-expressed in pancreatic cancer (PC). We recently reported that extracellular ANXA1 mediates PC cell motility acting on Formyl Peptide Receptors (FPRs). Here, we describe other mechanisms by which intracellular ANXA1 could mediate PC progression. We obtained ANXA1 Knock-Out (KO) MIA PaCa-2 cells using the CRISPR/Cas9 genome editing technology. LC-MS/MS analysis showed altered expression of several proteins involved in cytoskeletal organization. As a result, ANXA1 KO MIA PaCa-2 partially lost their migratory and invasive capabilities with a mechanism that appeared independent of FPRs...
2016: Scientific Reports
E D Rossi, T Bizzarro, M Martini, S Capodimonti, T Cenci, G Fadda, F Schmitt, L M Larocca
OBJECTIVE: BRAF(V)(600E) represents the most common diagnostic marker in papillary thyroid carcinoma (PTC). A few papers have demonstrated the correlation between BRAF(V)(600E) and specific morphological findings on PTCs in the adult population. This is the first reported series investigating cytological morphological parameters in paediatric thyroid carcinoma. METHODS: One hundred and nineteen paediatric samples (56 male and 63 female patients), diagnosed in the period between April 2013 and July 2015, were enrolled in the study...
June 3, 2016: Cytopathology: Official Journal of the British Society for Clinical Cytology
Michele S Barros, Eliane Gomes, Daniele I Gueroni, Anderson D Ramos, Luciana Mirotti, Esther Florsheim, Bruna Bizzarro, Ciro N R Lino, Ceres Maciel, Adriana Lino-Dos-Santos-Franco, Wothan Tavares-de-Lima, Margareth L Capurro, Momtchilo Russo, Anderson Sá-Nunes
Classical studies have shown that Aedes aegypti salivary secretion is responsible for the sensitization to mosquito bites and many of the components present in saliva are immunogenic and capable of inducing an intense immune response. Therefore, we have characterized a murine model of adjuvant-free systemic allergy induced by natural exposure to mosquito bites. BALB/c mice were sensitized by exposure to A. aegypti mosquito bites and intranasally challenged with phosphate-buffered saline only or the mosquito's salivary gland extract (SGE)...
2016: PloS One
Sergio Bizzarro, Ubele Van der Velden, Bruno G Loos
AIM: To investigate the clinical and microbiological effects of local disinfection with 0.5% sodium hypochlorite (NaOCl) with or without systemic antimicrobials (amoxicillin and metronidazole, AM) during basic periodontal therapy (BPT). MATERIAL AND METHODS: In a randomized clinical trial (four groups), 110 chronic periodontitis patients received BPT plus local irrigation with saline (BPT + S), local disinfection with NaOCl (BPT + DIS), BPT + DIS + AM or BPT + S + AM...
September 2016: Journal of Clinical Periodontology
K K Larsen, D Wielandt, M Schiller, M Bizzarro
Chromatographic purification of chromium (Cr), which is required for high-precision isotope analysis, is complicated by the presence of multiple Cr-species with different effective charges in the acid digested sample aliquots. The differing ion exchange selectivity and sluggish reaction rates of these species can result in incomplete Cr recovery during chromatographic purification. Because of large mass-dependent inter-species isotope fractionation, incomplete recovery can affect the accuracy of high-precision Cr isotope analysis...
April 22, 2016: Journal of Chromatography. A
Patrizia Straccia, Tommaso Bizzarro, Guido Fadda, Francesco Pierconti
BACKGROUND: The current study compared ThinPrep urinary cytology and conventional cytospin urinary cytology in the diagnosis of bladder cancer, applying the Paris System for Reporting Urinary Cytology. METHODS: Between January 2010 and December 2011, a total of 3659 urine samples were processed using conventional cytospin methods. Between January 2012 and December 2013, a total of 4186 urine cytological cases were analyzed using ThinPrep methods. In 131 cases (65 processed by conventional cytospin and 66 processed by ThinPrep), a subsequent biopsy was performed...
July 2016: Cancer Cytopathology
Esther Diana Rossi, Lawrence Q Wong, Tommaso Bizzarro, Gianluigi Petrone, Antonio Mule, Guido Fadda, Zubair M Baloch
BACKGROUND: Fine-needle aspiration cytology (FNAC) has proven its value as an essential step in the diagnosis of salivary gland lesions. Although the majority of salivary gland lesions, especially those that are common and benign, can be diagnosed with ease on FNAC, limited cellularity and morphologic lesion heterogeneity can pose diagnostic challenges and lead to false-positive and false-negative diagnoses. This study presents the institutional experience of FNAC of salivary gland lesions from 2 academic centers...
June 2016: Cancer Cytopathology
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