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https://www.readbyqxmd.com/read/28726740/cyclic-peptides-as-novel-therapeutic-microbicides-engineering-of-human-defensin-mimetics
#1
REVIEW
Annarita Falanga, Ersilia Nigro, Margherita Gabriella De Biasi, Aurora Daniele, Giancarlo Morelli, Stefania Galdiero, Olga Scudiero
Cyclic peptides are receiving significant attention thanks to their antimicrobial activity and high serum stability, which is useful to develop and design novel antimicrobial agents. Antimicrobial peptides appear to be key components of innate defences against bacteria, viruses, and fungi. Among the others, defensins possess a strong microbicidial activity. Defensins are cationic and amphipathic peptides with six cysteine residues connected by three disulfide bonds found in plants, insects, and mammals; they are divided in three families: α-, β-, and θ-defensins...
July 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28716706/characterization-of-a-presymptomatic-stage-in-a-drosophila-parkinson-s-disease-model-unveiling-dopaminergic-compensatory-mechanisms
#2
Daniela Molina-Mateo, Nicolás Fuenzalida-Uribe, Sergio Hidalgo, Claudia Molina-Fernández, Jorge Abarca, Rafaella V Zárate, Marcela Escandón, Reinaldo Figueroa, María Florencia Tevy, Jorge M Campusano
Parkinson disease (PD) is a degenerative disorder characterized by several motor symptoms including shaking, rigidity, slow movement and difficult walking, which has been associated to the death of nigro-striatal dopaminergic neurons. >90% of PD patients also present olfactory dysfunction. Although the molecular mechanisms responsible for this disease are not clear, hereditary PD is linked to mutations in specific genes, including the PTEN-induced putative kinase 1 (PINK1). In this work we provide for the first time a thorough temporal description of the behavioral effects induced by a mutation in the PINK1 gene in adult Drosophila, a previously described animal model for PD...
July 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28707288/atrial-fibrillation-risk-evaluation-in-patients-with-generalised-anxiety-disorders-the-role-of-electrocardiographic-parameters-commentary-to-the-article-atrial-electromechanical-delay-analysed-by-tissue-doppler-echocardiography%C3%A2
#3
https://www.readbyqxmd.com/read/28690387/editorial
#4
Giovanni Nigro
No abstract text is available yet for this article.
March 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/28677538/generation-of-a-sprague-dawley-gfp-rat-ips-cell-line
#5
Giulia Coppiello, Gloria Abizanda, Natalia Aguado, Elena Iglesias, Olalla Iglesias-Garcia, Antonio Lo Nigro, Felipe Prosper, Xabier L Aranguren
We generated a rat iPSC line called ATCi-rSD95 from transgenic Sprague-Dawley GFP fetal fibroblasts. Established ATCi-rSD95 cells present a normal karyotype, silencing of the transgenes and express pluripotency-associated markers. Additionally, ATCi-rSD95 cells are able to form teratoma with differentiated cells derived from the three germ-layers that maintain the GFP expression.
May 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28677536/isolation-and-characterization-of-sprague-dawley-and-wistar-kyoto-gfp-rat-embryonic-stem-cells
#6
Giulia Coppiello, Gloria Abizanda, Natalia Aguado, Elena Iglesias, Olalla Iglesias-Garcia, Antonio Lo Nigro, Felipe Prosper, Xabier L Aranguren
We generated two rat embryonic stem cell (ESC) lines: ATCe-SD7.8 from Sprague-Dawley strain and ATCe-WK1 from Wistar Kyoto strain. Cells were marked with enhanced green fluorescent protein (eGFP) by transduction with a lentiviral vector. Cells present a normal karyotype and express pluripotency-associated markers. Pluripotency was tested in vivo with the teratoma formation assay. Cells maintain eGFP expression upon differentiation to the three-germ layers. These cells can be a useful tool for cell therapy studies and chimera generation as they can be easily tracked by eGFP expression...
May 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28664963/dynamical-behavior-of-microgels-of-interpenetrated-polymer-networks
#7
Valentina Nigro, Roberta Angelini, Monica Bertoldo, Fabio Bruni, Maria Antonietta Ricci, Barbara Ruzicka
Microgel suspensions of an interpenetrated Polymer Network (IPN) of PNIPAM and PAAc in D2O have been investigated through dynamic light scattering as a function of temperature, pH and concentration across the Volume Phase Transition (VPT). The dynamics of the system is slowed down under H/D isotopic substitution due to different balance states between polymer/polymer and polymer/solvent interactions suggesting the crucial role played by H-bonding. The swelling behavior, reduced with respect to PNIPAM and water, has been described by the Flory-Rehner theory, tested for PNIPAM microgel and successfully expanded to higher order for IPN microgels...
June 30, 2017: Soft Matter
https://www.readbyqxmd.com/read/28659849/the-use-of-velocity-information-in-movement-reproduction
#8
Sergio Chieffi, Antonietta Messina, Ines Villano, Anna A Valenzano, Ersilia Nigro, Marco La Marra, Giuseppe Cibelli, Vincenzo Monda, Monica Salerno, Domenico Tafuri, Marco Carotenuto, Luigi Cipolloni, Maria P Mollica, Marcellino Monda, Giovanni Messina
Background: Previous studies suggested that movement velocity influence space perception. Aim and Objectives: We examined whether healthy participants used velocity information when they were asked to reproduce a previously performed movement. Two experiments were carried out. Methods: In Experiment 1, blindfolded participants actively performed an arm movement (criterion movement, CM) at a natural velocity, or quickly, or slowly. After a brief delay, participants were asked to reproduce (reproduction movement, RM) CM-amplitude...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28643677/modulator-effect-of-watercress-against-cyclophosphamide-induced-oxidative-stress-in-mice
#9
Natalia A Casanova, María Fernanda Simoniello, Marcela Mabel López Nigro, Marta A Carballo
Watercress (Nasturtium officinale, Cruciferae; W. Aiton) is a vegetable widely consumed in our country, with nutritional and potentially chemopreventive properties. Previous reports from our laboratory demonstrated the protective effect of watercress juice against DNA damage induced by cyclophosphamide in vivo. In this study, we evaluated the in vivo effect of cress plant on the oxidative stress in mice. Animals were treated by gavage with different doses of watercress juice (0.5 and 1g/kg body weight) for 15 consecutive days before intraperitoneal injection of cyclophosphamide (100 mg/kg body weight)...
2017: Medicina
https://www.readbyqxmd.com/read/28631404/structural-connectivity-differences-in-motor-network-between-tremor-dominant-and-nontremor-parkinson-s-disease
#10
Gaetano Barbagallo, Maria Eugenia Caligiuri, Gennarina Arabia, Andrea Cherubini, Angela Lupo, Rita Nisticò, Maria Salsone, Fabiana Novellino, Maurizio Morelli, Giuseppe Lucio Cascini, Domenico Galea, Aldo Quattrone
Motor phenotypes of Parkinson's disease (PD) are recognized to have different prognosis and therapeutic response, but the neural basis for this clinical heterogeneity remains largely unknown. The main aim of this study was to compare differences in structural connectivity metrics of the main motor network between tremor-dominant and nontremor PD phenotypes (TD-PD and NT-PD, respectively) using probabilistic tractography-based network analysis. A total of 63 PD patients (35 TD-PD patients and 28 NT-PD patients) and 30 healthy controls underwent a 3 T MRI...
June 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28627133/mesocorticolimbic-hemodynamic-response-in-parkinson-s-disease-patients-with-compulsive-behaviors
#11
Daniel O Claassen, Adam J Stark, Charis A Spears, Kalen J Petersen, Nelleke C van Wouwe, Robert M Kessler, David H Zald, Manus J Donahue
BACKGROUND: PD patients treated with dopamine therapy can develop maladaptive impulsive and compulsive behaviors, manifesting as repetitive participation in reward-driven activities. This behavioral phenotype implicates aberrant mesocorticolimbic network function, a concept supported by past literature. However, no study has investigated the acute hemodynamic response to dopamine agonists in this subpopulation. OBJECTIVES: We tested the hypothesis that dopamine agonists differentially alter mesocortical and mesolimbic network activity in patients with impulsive-compulsive behaviors...
June 19, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28625318/prognostic-value-of-different-allelic-polymorphism-of-aldosterone-synthase-receptor-in-a-congestive-heart-failure-european-continental-ancestry-population
#12
Mauro Feola, Martino Monteverde, Daniela Vivenza, Marzia Testa, Laura Leto, Valentina Astesana, Francesco Mussapi, Antonello Vado, Marco Merlano, Cristiana Lo Nigro
Aldosterone synthase (CYP11B2) is as an 9-exon gene on chromosome 8q22 and exists as a common single nucleotide polymorphism C-T transition for position -344. The aim of this study was to assess the -344T/C polymorphism of the aldosterone synthase promoter in a European continental ancestry congestive heart failure (CHF) population. METHODS: Patients discharged after an acute decompensation were enrolled and underwent echocardiography, determination of BNP, evaluation of non-invasive cardiac outputs and determination of -344 T/C SNP in the aldosterone synthase gene...
February 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28624456/in%C3%A2-vitro-evidences-of-epithelial-to-mesenchymal-transition-in-low-cell-density-cultured-human-fetal-hepatocytes
#13
Cinzia Maria Chinnici, Vitale Miceli, Mariangela Pampalone, Antonio Lo Nigro, Giandomenico Amico, Pier Giulio Conaldi
Culturing fetal hepatocytes in high cell-density allowed stabilization of the hepatocyte phenotype up to 8 weeks, including the maintenance of liver-specific functions. On the other hand, when cultured at low cell-density, fetal hepatocytes underwent morphological modifications and acquired fibroblastic morphology. Since a switch from E-cadherin to vimentin expression accompanied these changes, we hypothesized the occurrence of epithelial-to-mesenchymal transition when fetal hepatocytes were cultured at low cell-density...
August 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28620314/orexin-system-the-key-for-a-healthy-life
#14
REVIEW
Sergio Chieffi, Marco Carotenuto, Vincenzo Monda, Anna Valenzano, Ines Villano, Francesco Precenzano, Domenico Tafuri, Monica Salerno, Nicola Filippi, Francesco Nuccio, Maria Ruberto, Vincenzo De Luca, Luigi Cipolloni, Giuseppe Cibelli, Maria P Mollica, Diego Iacono, Ersilia Nigro, Marcellino Monda, Giovanni Messina, Antonietta Messina
The orexin-A/hypocretin-1 and orexin-B/hypocretin-2 are neuropeptides synthesized by a cluster of neurons in the lateral hypothalamus and perifornical area. Orexin neurons receive a variety of signals related to environmental, physiological and emotional stimuli, and project broadly to the entire CNS. Orexin neurons are "multi-tasking" neurons regulating a set of vital body functions, including sleep/wake states, feeding behavior, energy homeostasis, reward systems, cognition and mood. Furthermore, a dysfunction of orexinergic system may underlie different pathological conditions...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28604552/the-use-of-vasopressors-in-pedicled-flaps-for-chest-wall-reconstruction
#15
Amy C Kite, Lauren C Nigro, Michael J Feldman, Andrea L Pozez
INTRODUCTION: The effect of vasopressors on flaps remains controversial in the literature. Often, surgeons avoid vasopressors with the thought that vasoconstriction reduces flap perfusion resulting in flap loss. METHODS: A retrospective review was performed on patients who required chest wall reconstruction from 1998 to 2013. Patients were identified through the use of Current Procedural Terminology codes. The data collected included demographics, indications for surgery, prior debridement, preoperative albumin levels, and perioperative vasopressor use...
June 9, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28597570/pharmaco-toxicological-effects-of-the-novel-third-generation-fluorinate-synthetic-cannabinoids-5f-adbinaca-ab-fubinaca-and-sts-135-in-mice-in-vitro-and-in-vivo-studies
#16
Isabella Canazza, Andrea Ossato, Fabrizio Vincenzi, Adolfo Gregori, Fabiana Di Rosa, Federica Nigro, Alessandro Rimessi, Paolo Pinton, Katia Varani, Pier Andrea Borea, Matteo Marti
INTRODUCTION: 5F-ADBINACA, AB-FUBINACA, and STS-135 are 3 novel third-generation fluorinate synthetic cannabinoids that are illegally marketed as incense, herbal preparations, or research chemicals for their psychoactive cannabis-like effects. METHODS: The present study aims at investigating the in vitro and in vivo pharmacological activity of 5F-ADBINACA, AB-FUBINACA, and STS-135 in male CD-1 mice, comparing their in vivo effects with those caused by the administration of Δ(9) -THC and JWH-018...
June 9, 2017: Human Psychopharmacology
https://www.readbyqxmd.com/read/28595339/cardiac-resynchronization-therapy-and-electrical-storm-results-of-the-observational-registry-on-long-term-outcome-of-icd-patients-observo-icd
#17
Federico Guerra, Pietro Palmisano, Gabriele Dell'Era, Matteo Ziacchi, Ernesto Ammendola, Giulia Pongetti, Paolo Bonelli, Francesca Patani, Chiara Devecchi, Michele Accogli, Eraldo Occhetta, Gerardo Nigro, Mauro Biffi, Giuseppe Boriani, Alessandro Capucci
Aims: Electrical storm (ES) is a condition defined as three or more episodes of ventricular fibrillation (VF) or ventricular tachycardia (VT) within 24 h, and usually coexist with advanced heart failure in patients with structural heart disease. The aim of the present study is to test whether cardiac resynchronization therapy (CRT) can be associated with a lower incidence of ES. Methods and results: The OBSERVO-ICD (NCT02735811) is a multicentre, retrospective registry, enrolling all consecutive patients undergoing ICD or CRT-D implantation from 2010 to 2012 in five Italian high-volume arrhythmia centres...
June 7, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28576260/regulation-of-bone-mass-by-the-gut-microbiota-is-dependent-on-nod1-and-nod2-signaling
#18
Claes Ohlsson, Giulia Nigro, Ivo Gomperts Boneca, Fredrik Bäckhed, Philippe Sansonetti, Klara Sjögren
Germ-free (GF) mice have increased bone mass that is normalized by colonization with gut microbiota (GM) from conventionally raised (CONV-R) mice. To determine if innate immune signaling pathways mediated the effect of the GM, we studied the skeleton of GF and CONV-R mice with targeted inactivation of MYD88, NOD1 or NOD2. In contrast to WT and Myd88(-/-) mice, cortical bone thickness in mice lacking Nod1 or Nod2 was not increased under GF conditions. The expression of Tnfα and the osteoclastogenic factor Rankl in bone was reduced in GF compared to CONV-R WT mice but not in Nod1(-/-) or Nod2(-/-) mice indicating that the effect of the GM to increase Tnfα and Rankl in bone and to reduce bone mass is dependent on both NOD1 and NOD2 signaling...
July 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28571798/olfactory-vector-hypothesis-for-encephalitis-lethargica
#19
Isamu Mori
Viruses have long been implicated in the pathogenesis of classical encephalitis lethargica, which was first described by Constantin von Economo in 1917. In this article, I propose the hypothesis that an airborne virus travels along the olfactory conduit to infect the olfactory bulb; this local infection or induced neuroinflammation, in turn, retrogradely targets certain neuronal populations with sleep-wake regulatory functions in the hypothalamus and midbrain, leading to the development of wakeful inactivity, a hallmark clinical feature of the disease...
June 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28556237/characteristics-and-outcomes-of-patients-with-profound-hyponatremia-due-to-primary-polydipsia
#20
Clara Sailer, Bettina Winzeler, Nicole Nigro, Isabelle Suter-Widmer, Birsen Arici, Martina Bally, Philipp Schuetz, Beat Mueller, Mirjam Christ-Crain
OBJECTIVE: Hyponatremia due to excessive fluid intake (i.e. primary polydipsia (PP)) is common. It may culminate in profound hyponatremia-carrying considerable risk of morbidity. However, data on patients with PP leading to hyponatremia is lacking. Herein, we describe the characteristics of polydiptic patients hospitalised with profound hyponatremia, and assess one-year outcomes. DESIGN: Substudy of the prospective observational Co-MED Study. PATIENTS: Patients with an episode of profound hyponatremia (≤125mmol/l) due to PP in the medical emergency were eligible and classified into psychogenic polydipsia (PsyP), dipsogenic polydipsia (DiP), and beer potomania (BP)...
May 27, 2017: Clinical Endocrinology
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