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https://www.readbyqxmd.com/read/28433129/swept-source-optical-coherence-tomography-angiography-imaging-in-a-case-of-uveal-melanoma
#1
Marco Pellegrini, Giovanni Staurenghi
No abstract text is available yet for this article.
May 2017: Ophthalmology
https://www.readbyqxmd.com/read/28428612/granzyme-k-deficient-mice-show-no-evidence-of-impaired-anti-viral-immunity
#2
Lars T Joeckel, Cody C Allison, Mark Pellegrini, Catherina H Bird, Phillip Ian Bird
The biological role of granzyme K, a serine protease of cytotoxic T lymphocytes (CTL), is controversial. It has been reported to induce perforin-mediated cell death in vitro, but is also reported to be non-cytotoxic and to operate in inflammatory processes. To elucidate the biological role of this protease we have deleted the granzyme K gene in mice (mutant allele: Gzmk(tm1.1Pib); MGI:5636646). Gzmk(-/-) mice are healthy, anatomically normal, fecund, and show normal hematopoietic development. Gzmk(-/-) mice readily recover from Lymphocytic choriomeningitis virus and mouse pox Ectromelia virus infection...
April 21, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28427046/impressive-response-to-pixantrone-after-allogeneic-transplant-in-a-multiple-relapsed-diffuse-large-b-cell-lymphoma
#3
Francesco Malaspina, Cinzia Pellegrini, Beatrice Casadei, Lisa Argnani, Pier Luigi Zinzani
Diffuse large B-cell lymphoma is the most frequent histology at diagnosis among non-Hodgkin B lymphomas and can be cured in 50-70% of cases after the first-line chemotherapy regimen. Patients who do not respond to first-line treatment can undergo numerous subsequent steps, culminating in allogeneic stem cell transplant (alloSCT). A relapse after alloSCT, however, carries an awful prognosis, seeing the demise of the patient usually in the following months. Here we present the case of a multiple relapsed patient who successfully underwent therapy with pixantrone after alloSCT, obtaining a complete remission without any considerable side effects...
April 21, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28423502/acute-lymphoblastic-leukemia-cells-are-sensitive-to-disturbances-in-protein-homeostasis-induced-by-proteasome-deubiquitinase-inhibition
#4
Magdalena Mazurkiewicz, Ellin-Kristina Hillert, Xin Wang, Paola Pellegrini, Maria Hägg Olofsson, Karthik Selvaraju, Padraig D'Arcy, Stig Linder
The non-genotoxic nature of proteasome inhibition makes it an attractive therapeutic option for the treatment of pediatric malignancies. We recently described the small molecule VLX1570 as an inhibitor of proteasome deubiquitinase (DUB) activity that induces proteotoxic stress and apoptosis in cancer cells. Here we show that acute lymphoblastic leukemia (ALL) cells are highly sensitive to treatment with VLX1570, resulting in the accumulation of polyubiquitinated proteasome substrates and loss of cell viability...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420693/modulation-of-innate-immunity-of-patients-with-alzheimer-s-disease-by-omega-3-fatty-acids
#5
REVIEW
Milan Fiala, Gijs Kooij, Karen Wagner, Bruce Hammock, Matteo Pellegrini
The innate immune system of patients with Alzheimer's disease and mild cognitive impairment (MCI) is deregulated with highly increased or decreased transcription of inflammatory genes and consistently depressed phagocytosis of amyloid-β1-42 (Aβ) by monocytes and macrophages. Current immune therapies target single mechanisms in the adaptive immune system but not innate immunity. Here, we summarize recent advances in therapy by ω-3, ω-6, and epoxy fatty acids; specialized proresolving mediators; and vitamin D3 that have proven immune effects and emerging cognitive effects in patients with MCI...
April 18, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28419548/detection-of-prostate-cancer-specific-transcripts-in-extracellular-vesicles-isolated-from-post-dre-urine
#6
Kathryn L Pellegrini, Dattatraya Patil, Kristen J S Douglas, Grace Lee, Kathryn Wehrmeyer, Mersiha Torlak, Jeremy Clark, Colin S Cooper, Carlos S Moreno, Martin G Sanda
BACKGROUND: The measurement of gene expression in post-digital rectal examination (DRE) urine specimens provides a non-invasive method to determine a patient's risk of prostate cancer. Many currently available assays use whole urine or cell pellets for the analysis of prostate cancer-associated genes, although the use of extracellular vesicles (EVs) has also recently been of interest. We investigated the expression of prostate-, kidney-, and bladder-specific transcripts and known prostate cancer biomarkers in urine EVs...
April 17, 2017: Prostate
https://www.readbyqxmd.com/read/28418708/long-trekking-experience-at-high-altitude-causes-testicular-volumetric-reduction-in-humans-evidence-based-on-magnetic-resonance-imaging
#7
Vittore Verratti, Armando Tartaro, Stefano Falone, Maurizio Pellegrini, Fiore Pelliccione, Camillo Di Giulio
No abstract text is available yet for this article.
April 18, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28416749/acute-lymphoblastic-leukemia-cells-are-sensitive-to-disturbances-in-protein-homeostasis-induced-by-proteasome-deubiquitinase-inhibition
#8
Magdalena Mazurkiewicz, Ellin-Kristina Hillert, Xin Wang, Paola Pellegrini, Maria Hägg Olofsson, Karthik Selvaraju, Padraig D'Arcy, Stig Linder
The non-genotoxic nature of proteasome inhibition makes it an attractive therapeutic option for the treatment of pediatric malignancies. We recently described the small molecule VLX1570 as an inhibitor of proteasome deubiquitinase (DUB) activity that induces proteotoxic stress and apoptosis in cancer cells. Here we show that acute lymphoblastic leukemia (ALL) cells are highly sensitive to treatment with VLX1570, resulting in the accumulation of polyubiquitinated proteasome substrates and loss of cell viability...
February 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415982/the-treatment-of-primary-mediastinal-large-b-cell-lymphoma-a-two-decades-monocentric-experience-with-98-patients
#9
Alessandro Broccoli, Beatrice Casadei, Vittorio Stefoni, Cinzia Pellegrini, Federica Quirini, Lorenzo Tonialini, Alice Morigi, Miriam Marangon, Lisa Argnani, Pier Luigi Zinzani
BACKGROUND: The purpose of this study is to investigate the most suitable first-line approach and the best combination treatment for primary mediastinal large B-cell lymphoma (PMLBCL) as they have been matter of debate for at least two decades. METHODS: Our single centre experience in the treatment of 98 de novo PMLBCL patients over the last 20 years is reviewed. All patients received MACOP-B chemotherapy. Thirty-seven received both rituximab and mediastinal radiotherapy; 30 were irradiated after chemotherapy, although not receiving rituximab and 20 received rituximab without radiotherapy consolidation...
April 17, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28412594/synthesis-and-revised-stereochemical-assignment-of-c-allyl-glucopyranosides-and-derivatives
#10
Nicolas Petry, Timothé Vucko, Charlotte Collet, Sandrine Lamandé-Langle, Nadia Pellegrini-Moïse, Françoise Chrétien
α- and β-C-allylglucopyranosides and hydroxy-, bromo- and azido-derivatives were prepared through allylation at C-1 of methyl 2,3,4,6-tetra-O-benzyl-D-glucopyranoside or 1-O-acetyl-2,3,4,6-tetra-O-benzyl-D-glucopyranose and subsequent chemical modifications of the alkene on the anomeric arm. However, we picked out some discordance between some recent published studies and our results. After a thorough work of characterization and NMR analysis, we unambiguously confirmed α and β stereochemistry of the two series of compounds and fully described for the first time β-C-propyl alcohol, bromide and azide of 2,3,4,6-tetra-O-benzyl-D-glucopyranose...
April 12, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28410442/development-of-an-acrylate-derivative-targeting-the-nlrp3-inflammasome-for-the-treatment-of-inflammatory-bowel-disease
#11
Mattia Cocco, Carolina Pellegrini, Helios Martínez-Banaclocha, Marta Giorgis, Elisabetta Marini, Annalisa Costale, Gianluca Miglio, Matteo Fornai, Luca Antonioli, Gloria López-Castejón, Ana Tapia-Abellán, Diego Angosto, Iva Hafner-Bratkovič, Luca Regazzoni, Corrado Blandizzi, Pablo Pelegrín, Massimo Bertinaria
Pharmacological inhibition of NLRP3 inflammasome activation may offer a new option in the treatment of inflammatory bowel disease. In this work, we report the design, synthesis, and biological screening of a series of acrylate derivatives as NLRP3 inhibitors. The in vitro determination of reactivity, cytotoxicity, NLRP3 ATPase inhibition, and antipyroptotic properties allowed the selection of 11 (INF39), a nontoxic, irreversible NLRP3 inhibitor able to decrease interleukin-1β release from macrophages. Bioluminescence resonance energy transfer experiments proved that this compound was able to directly interfere with NLRP3 activation in cells...
April 24, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28409773/the-making-of-a-mammalian-peroxisome-version-2-0-mitochondria-get-into-the-mix
#12
Michael Schrader, Luca Pellegrini
A recent report from the Laboratory of Heidi McBride (McGill University) presents a role for mitochondria in the de novo biogenesis of peroxisomes in mammalian cells. Peroxisomes are essential organelles responsible for a wide variety of biochemical functions, from the generation of bile to plasmalogen synthesis, reduction of peroxides, and the oxidation of very-long-chain fatty acids. Like mitochondria, peroxisomes proliferate primarily through growth and division of pre-existing peroxisomes. However, unlike mitochondria, peroxisomes do not fuse; further, and perhaps most importantly, they can also be born de novo, a process thought to occur through the generation of pre-peroxisomal vesicles that originate from the endoplasmic reticulum...
April 14, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28405744/long-term-follow-up-of-fellow-eye-in-patients-with-lamellar-macular-hole
#13
Ugo Nava, Matteo Giuseppe Cereda, Ferdinando Bottoni, Chiara Preziosa, Marco Pellegrini, Andrea Giani, Giovanni Staurenghi
BACKGROUND: To evaluate macular changes in fellow eyes of patients diagnosed with lamellar macular hole (LMH) using spectral-domain optical coherence tomography (SD-OCT) and blue fundus autofluorescence (B-FAF). METHODS: Fellow eyes of patients diagnosed with a LMH were retrospectively evaluated on OCT. Best-corrected visual acuity (BCVA) and central foveal thickness (CFT) were recorded. Corresponding B-FAF images, vitreo-macular relations, and type of epiretinal membranes (ERMs) were also examined...
April 13, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28399065/cultivated-limbal-epithelial-transplantation
#14
Paolo Rama, Giulio Ferrari, Graziella Pellegrini
PURPOSE OF REVIEW: To provide an updated literature review on the status of cultivated limbal (corneal) epithelial transplantation. Cultivated limbal stem-cell transplantation recently received regulatory approval. We provide a comprehensive overview of recent developments in the field. RECENT FINDINGS: The current article reviews and highlights recent developments in the field of cultivated limbal stem-cell transplantation as retrieved from a literature search for the last year...
April 8, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28386121/the-fractal-organization-of-ultradian-rhythms-in-avian-behavior
#15
Diego A Guzmán, Ana G Flesia, Miguel A Aon, Stefania Pellegrini, Raúl H Marin, Jackelyn M Kembro
Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet the relationship between these two dynamic regimens remain unexplored. Herein we studied locomotor time series of visually isolated Japanese quails sampled every 0.5 s during 6.5 days (>10(6) data points). These high-resolution, week-long, time series enabled simultaneous evaluation of ultradian rhythms as well as fractal organization according to six different analytical methods that included Power Spectrum, Enright, Empirical Mode Decomposition, Wavelet, and Detrended Fluctuation analyses...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28379600/hepatotoxicity-associated-to-synthetic-cannabinoids-use
#16
R Solimini, F P Busardò, M C Rotolo, S Ricci, L Mastrobattista, C Mortali, S Graziano, M Pellegrini, N M di Luca, I Palmi
Synthetic cannabinoids (SCs) are psychotropic compounds, chemically created in laboratory to mimic cannabinergic brain activity of delta-9 tetrahydrocannabinol. The consumption of these compounds for recreational purposes can lead to a variety of adverse effects on health including overdose and deaths. Increasingly popular as substances of abuse since the 2000s, SCs were produced initially to bind and study cannabinoid receptors (they also can be called synthetic cannabimimetics) failing in eliminating the psychoactive effects...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28379590/hepatotoxicity-of-paracetamol-and-related-fatalities
#17
R Tittarelli, M Pellegrini, M G Scarpellini, E Marinelli, V Bruti, N M di Luca, F P Busardò, S Zaami
Paracetamol, also known as acetaminophen, is the most commonly used antipyretic and pain reliever and since 1955 it is available over-the-counter as a single formulation or in combination with other substances and, as indicated by the World Health Organization, it can be used in all the three steps of pain intensity. Paracetamol toxicity is one of the most common causes of poisoning worldwide. While paracetamol is described as relatively nontoxic when administered in therapeutic doses, it is known to cause toxicity when taken in a single or repeated high dose, or after chronic ingestion...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28379452/the-crystal-structure-of-trz1-the-long-form-rnase-z-from-yeast
#18
Miao Ma, Ines Li de la Sierra-Gallay, Noureddine Lazar, Olivier Pellegrini, Dominique Durand, Anita Marchfelder, Ciarán Condon, Herman van Tilbeurgh
tRNAs are synthesized as precursor RNAs that have to undergo processing steps to become functional. Yeast Trz1 is a key endoribonuclease involved in the 3΄ maturation of tRNAs in all domains of life. It is a member of the β-lactamase family of RNases, characterized by an HxHxDH sequence motif involved in coordination of catalytic Zn-ions. The RNase Z family consists of two subfamilies: the short (250-400 residues) and the long forms (about double in size). Short form RNase Z enzymes act as homodimers: one subunit embraces tRNA with a protruding arm, while the other provides the catalytic site...
April 4, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28377615/ultra-high-mass-resolution-maldi-imaging-mass-spectrometry-of-proteins-and-metabolites-in-a-mouse-model-of-glioblastoma
#19
M Dilillo, R Ait-Belkacem, C Esteve, D Pellegrini, S Nicolardi, M Costa, E Vannini, E L de Graaf, M Caleo, L A McDonnell
MALDI mass spectrometry imaging is able to simultaneously determine the spatial distribution of hundreds of molecules directly from tissue sections, without labeling and without prior knowledge. Ultra-high mass resolution measurements based on Fourier-transform mass spectrometry have been utilized to resolve isobaric lipids, metabolites and tryptic peptides. Here we demonstrate the potential of 15T MALDI-FTICR MSI for molecular pathology in a mouse model of high-grade glioma. The high mass accuracy and resolving power of high field FTICR MSI enabled tumor specific proteoforms, and tumor-specific proteins with overlapping and isobaric isotopic distributions to be clearly resolved...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28373601/an-epigenetic-aging-clock-for-dogs-and-wolves
#20
Michael J Thompson, Bridgett vonHoldt, Steve Horvath, Matteo Pellegrini
Several articles describe highly accurate age estimation methods based on human DNA-methylation data. It is not yet known whether similar epigenetic aging clocks can be developed based on blood methylation data from canids. Using Reduced Representation Bisulfite Sequencing, we assessed blood DNA-methylation data from 46 domesticated dogs (Canis familiaris) and 62 wild gray wolves (C. lupus). By regressing chronological dog age on the resulting CpGs, we defined highly accurate multivariate age estimators for dogs (based on 41 CpGs), wolves (67 CpGs), and both combined (115 CpGs)...
March 28, 2017: Aging
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