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https://www.readbyqxmd.com/read/29167380/self-oligomerization-regulates-stability-of-survival-motor-neuron-smn-protein-isoforms-by-sequestering-an-scf-slmb-degron
#1
Kelsey M Gray, Kevin A Kaifer, David Baillat, Ying Wen, Thomas R Bonacci, Allison D Ebert, Amanda C Raimer, Ashlyn M Spring, Sara Ten Have, Jacqueline J Glascock, Kushol Gupta, Gregory D Van Duyne, Michael J Emanuele, Angus I Lamond, Eric J Wagner, Christian L Lorson, A Gregory Matera
Spinal muscular atrophy (SMA) is caused by homozygous mutations in human SMN1 Expression of a duplicate gene (SMN2) primarily results in skipping of exon 7 and production of an unstable protein isoform, SMNΔ7. Although SMN2 exon skipping is the principal contributor to SMA severity, mechanisms governing stability of SMN isoforms are poorly understood. We used a Drosophila model system and label-free proteomics to identify the SCF(Slmb) ubiquitin E3 ligase complex as a novel SMN binding partner. SCF(Slmb) interacts with a phospho-degron embedded within the human and fruitfly SMN YG-box oligomerization domains...
November 22, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29133298/functional-redundancy-of-variant-and-canonical-histone-h3-lysine-9-modification-in-drosophila
#2
Taylor J R Penke, Daniel J McKay, Brian D Strahl, A Gregory Matera, Robert J Duronio
Histone post-translational modifications (PTMs) and differential incorporation of variant and canonical histones into chromatin are central modes of epigenetic regulation. Despite similar protein sequences, histone variants are enriched for different suites of PTMs compared to their canonical counterparts. For example, variant histone H3.3 occurs primarily in transcribed regions and is enriched for "active" histone PTMs like Lys9 acetylation (H3.3K9ac), whereas the canonical histone H3 is enriched for Lys9 methylation (H3K9me), which is found in transcriptionally silent heterochromatin...
November 13, 2017: Genetics
https://www.readbyqxmd.com/read/29112455/on-the-journey-toward-humane-education-in-brazil-first-request-for-a-total-ban-of-harmful-animal-use-in-professional-and-higher-education
#3
REVIEW
Róber Bachinski, Gutemberg Alves, Mariângela Freitas de Almeida Souza, Vanessa Carli Bones, Rita de Cassia Maria Garcia, Rosangela Gebara, Valeska Regina Reque Ruiz, Luciano da Silva Alonso, Thales Tréz, Simone Tostes Oliveira, Alexandro Aluisio Rocha, Rita Leal Paixão, Roseli Pizzigatti Klein, Débora Gasparetto, Nick Jukes, Júlia Maria Matera
The Brazilian Network for Humane Education (RedEH( is an independent and self-managed group comprised of academics from ten different Brazilian states and a number of international collaborators. In 2016, in a concerted effort to change the educational field in Brazil and propagate humane education, RedEH sent a request to the Brazilian National Council for the Control of Animal Experimentation (CONCEA(, asking that harmful animal use in education in professional and undergraduate courses be banned. This was the first formal request for a total replacement of harmful animal use in education in Brazil, and represented a major historic landmark in the advancement of Brazilian science education...
November 2017: Alternatives to Laboratory Animals: ATLA
https://www.readbyqxmd.com/read/29105382/hypoxia-from-placental-development-to-fetal-programming
#4
REVIEW
Lais Fajersztajn, Mariana Matera Veras
Hypoxia may influence normal and different pathological processes. Low oxygenation activates a variety of responses, many of them regulated by hypoxia-inducible factor 1 complex, which is mostly involved in cellular control of O2 consumption and delivery, inhibition of growth and development, and promotion of anaerobic metabolism. Hypoxia plays a significant physiological role in fetal development; it is involved in different embryonic processes, for example, placentation, angiogenesis, and hematopoiesis. More recently, fetal hypoxia has been associated directly or indirectly with fetal programming of heart, brain, and kidney function and metabolism in adulthood...
October 16, 2017: Birth defects research
https://www.readbyqxmd.com/read/29096664/kinetic-gait-analysis-in-english-bulldogs
#5
Andrés Sebastian Aristizabal Escobar, Alexandre Navarro Alves de Souza, Ana Carolina Brandão de Campos Fonseca Pinto, Julia Maria Matera
BACKGROUND: Canine breed conformation may interfere with locomotion and may predispose to orthopedic disease. Bulldogs have a high incidence of orthopedic diseases such as hip dysplasia. Kinetic gait analysis provides an objective way to assess and analyze locomotion. The aim of this study was to study the vertical forces of English Bulldogs during walk using a pressure sensitive walkway. We hypothesize that Bulldogs affected by orthopedic diseases have decreased weight bearing and asymmetric locomotion in the limbs despite having mild to no sings during clinical examination...
November 2, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29096493/local-metrics-error-based-shepard-interpolation-as-surrogate-for-highly-non-linear-material-models-in-high-dimensions
#6
Juan M Lorenzi, Thomas Stecher, Karsten Reuter, Sebastian Matera
Many problems in computational materials science and chemistry require the evaluation of expensive functions with locally rapid changes, such as the turn-over frequency of first principles kinetic Monte Carlo models for heterogeneous catalysis. Because of the high computational cost, it is often desirable to replace the original with a surrogate model, e.g., for use in coupled multiscale simulations. The construction of surrogates becomes particularly challenging in high-dimensions. Here, we present a novel version of the modified Shepard interpolation method which can overcome the curse of dimensionality for such functions to give faithful reconstructions even from very modest numbers of function evaluations...
October 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29082808/an-overview-of-the-current-management-of-chronic-obstructive-pulmonary-disease-can-we-go-beyond-the-gold-recommendations
#7
Mario Cazzola, Paola Rogliani, Ermanno Puxeddu, Josuel Ora, Maria Gabriella Matera
Treatment recommendations are based on randomized controlled trials (RCTs). However, only about 1 in 20 people meet the inclusion criteria for RCTs forming consensus guidelines in chronic obstructive pulmonary disease (COPD). Consequently, the one-size-fits-all approach focused merely on traditional symptoms and risk of exacerbations is inadequate to treat COPD. COPD needs a personalized medicine strategy because of the relevance of COPD heterogeneity for subject-based health risk assessment and stratification in the clinical arena...
November 3, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/29069828/neutrophils-protect-lymphoma-cells-against-cytotoxic-and-targeted-therapies-through-cd11b-icam-1-binding
#8
Taghreed Hirz, Eva-Laure Matera, Kamel Chettab, Lars Petter Jordheim, Doriane Mathé, Anne Evesque, Justine Esmenjaud, Gilles Salles, Charles Dumontet
Innate immune cells constitute a substantial proportion of the cells within the tumor microenvironment. Besides the contribution of the microenvironment to tumor proliferation and survival, there is direct evidence that interactions between tumor cells and their microenvironment alter sensitivity to anti-cancer agents. Neutrophils, a key player in the innate immune system, have been less studied than many other immune cells regarding their impact on cancer cell response to anti-cancer agents. In our 2D and 3D coculture systems, human neutrophils and differentiated HL60 cells attenuated the sensitivity of various lymphoma cell lines to several anti-cancer agents, including targeted therapies...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28992739/pharmacogenetic-and-pharmacogenomic-considerations-of-asthma-treatment
#9
REVIEW
Maria Gabriella Matera, Barbara Rinaldi, Luigino Calzetta, Mario Cazzola
Pharmacogenetic and pharmacogenomic approaches are already utilized in some areas, such as oncology and cardiovascular disease, for selecting appropriate patients and/or establishing treatment and dosing guidelines. This is not true in asthma although many patients have different responses to drug treatment due to genetic factors. Areas covered: Several genetic factors that affect the pharmacotherapeutic responses to asthma medications, such as β2-AR agonists, corticosteroids, and leukotriene modifiers and could contribute to significant between-person variability in response are described...
November 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28953963/early-and-late-pulmonary-effects-of-nebulized-lps-in-mice-an-acute-lung-injury-model
#10
Natália de Souza Xavier Costa, Gabriel Ribeiro Júnior, Adair Aparecida Dos Santos Alemany, Luciano Belotti, Douglas Hidalgo Zati, Marcela Frota Cavalcante, Mariana Matera Veras, Susan Ribeiro, Esper Georges Kallás, Paulo Hilário Nascimento Saldiva, Marisa Dolhnikoff, Luiz Fernando Ferraz da Silva
BACKGROUND AND OBJECTIVE: Acute respiratory distress syndrome (ARDS) has a high mortality rate of 35-46% depending on its severity. Animal models are crucial to better understand the pathophysiology of diseases, including ARDS. This study presents a feasible animal model of acute lung injury (ALI) using nebulized lipopolysaccharide (LPS) in a non-invasive approach, focusing on its short and long-term effects. METHODS: Mice received nebulized LPS or vehicle only (control group)...
2017: PloS One
https://www.readbyqxmd.com/read/28910530/efficient-implicit-solvation-method-for-full-potential-dft
#11
Markus Sinstein, Christoph Scheurer, Sebastian Matera, Volker Blum, Karsten Reuter, Harald Oberhofer
With the advent of efficient electronic structure methods, effective continuum solvation methods have emerged as a way to, at least partially, include solvent effects into simulations without the need for expensive sampling over solvent degrees of freedom. The multipole moment expansion (MPE) model, while based on ideas initially put forward almost 100 years ago, has recently been updated for the needs of modern electronic structure calculations. Indeed, for an all-electron code relying on localized basis sets and-more importantly-a multipole moment expansion of the electrostatic potential, the MPE method presents a particularly cheap way of solving the macroscopic Poisson equation to determine the electrostatic response of a medium surrounding a solute...
October 13, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28876956/pd-catalyzed-thiophene-aryl-coupling-reaction-via-c-h-bond-activation-in-deep-eutectic-solvents
#12
Angela Punzi, Donato I Coppi, Sergio Matera, Maria A M Capozzi, Alessandra Operamolla, Roberta Ragni, Francesco Babudri, Gianluca M Farinola
Direct arylation of 5-octylthieno[3,4-c]pyrrole-4,6-dione with a series of functionalized aryl iodides via C-H bond activation is demonstrated in a deep eutectic solvent made of choline chloride and urea in non-anhydrous conditions and without exclusion of air. This is the first demonstration of a thiophene-aryl coupling via direct arylation in deep eutectic solvents.
September 6, 2017: Organic Letters
https://www.readbyqxmd.com/read/28855442/evaluating-the-statistical-methodology-of-randomized-trials-on-dentin-hypersensitivity-management
#13
Domenica Matranga, Federico Matera, Giuseppe Pizzo
The present study aimed to evaluate the characteristics and quality of statistical methodology used in clinical studies on dentin hypersensitivity management. An electronic search was performed for data published from 2009 to 2014 by using PubMed, Ovid/MEDLINE, and Cochrane Library databases. The primary search terms were used in combination. Eligibility criteria included randomized clinical trials that evaluated the efficacy of desensitizing agents in terms of reducing dentin hypersensitivity. A total of 40 studies were considered eligible for assessment of quality statistical methodology...
August 31, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28840493/orthorexia-nervosa-relationship-with-obsessive-compulsive-symptoms-disordered-eating-patterns-and-body-uneasiness-among-italian-university-students
#14
Anna Brytek-Matera, Maria Luisa Fonte, Eleonora Poggiogalle, Lorenzo Maria Donini, Hellas Cena
INTRODUCTION: The present study aimed to investigate the relationship between ORTO-15 score and obsessive-compulsive symptoms, disordered eating patterns and body uneasiness among female and male university students and to examine the predictive model of ORTO-15 in both groups. METHODS: One hundred and twenty students participated in the present study (mean age 22.74 years, SD 7.31). The ORTO-15 test, the Maudsley Obsessive-Compulsive Questionnaire, the Eating Attitudes Test-26 and the Body Uneasiness Test were used for the present study...
August 24, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28820906/exposure-to-fine-particulate-matter-in-the-air-alters-placental-structure-and-the-renin-angiotensin-system
#15
Sônia de Fátima Soto, Juliana Oliveira de Melo, Guilherme D'Aprile Marchesi, Karen Lucasechi Lopes, Mariana Matera Veras, Ivone Braga de Oliveira, Regiane Machado de Souza, Isac de Castro, Luzia Naôko Shinohara Furukawa, Paulo Hilário Nascimento Saldiva, Joel C Heimann
METHODS: Female Wistar rats were exposed to filtered air (F) or to concentrated fine particulate matter (P) for 15 days. After mating, the rats were divided into four groups and again exposed to F or P (FF, FP, PF, PP) beginning on day 6 of pregnancy. At embryonic day 19, the placenta was collected. The placental structure, the protein and gene expression of TGFβ1, VEGF-A, and its receptor Flk-1 and RAS were evaluated by indirect ELISA and quantitative real-time PCR. RESULTS: Exposure to P decreased the placental mass, size, and surface area as well as the TGFβ1, VEGF-A and Flk-1 content...
2017: PloS One
https://www.readbyqxmd.com/read/28769001/selected-physicochemical-and-biological-properties-of-ethyl-ascorbic-acid-compared-to-ascorbic-acid
#16
Iwona Golonka, Monika Oleksy, Adam Junka, Agnieszka Matera-Witkiewicz, Marzenna Bartoszewicz, Witold Musiał
The aim of the work was the evaluation of selected biological and physicochemical, applicative properties of ethylated ascorbic acid (AAE) compared to ascorbic acid (AA). Thermogravimetry (TG), differential thermogravimetry (DTG), and differential thermal analysis (DTA) were conducted, followed by the evaluation of AAE decomposition by the UV-Vis spectroscopic method including the influence of temperature and pH. Scavenging, antimicrobial activity and cytotoxicity against L929 fibroblasts were also performed...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28753070/impact-of-mucolytic-agents-on-copd-exacerbations-a-pair-wise-and-network-meta-analysis
#17
Mario Cazzola, Paola Rogliani, Luigino Calzetta, Nicola A Hanania, Maria Gabriella Matera
Mucolytics are potentially useful for the management of chronic obstructive pulmonary disease (COPD), although there is conflicting advice on their use in different guideline documents. Furthermore, there is paucity of data comparing the efficacy of the different mucolytic agents in reducing the odds of COPD exacerbations. We performed pair-wise and network meta-analyses to evaluate the impact of mucoly-tics in COPD. Randomized clinical trials lasting at least 3 months and investigating the effects of mucolytics on COPD exacerbations were identified from published studies and repository databases...
October 2017: COPD
https://www.readbyqxmd.com/read/28745522/pharmacological-characterization-of-the-interaction-between-tiotropium-and-olodaterol-administered-at-5-5-concentration-ratio-in-equine-bronchi
#18
Luigino Calzetta, Paola Rogliani, Maurizio Mattei, Pietro Alfonsi, Giuseppe Cito, Elena Pistocchini, Mario Cazzola, Maria Gabriella Matera
Equine airways represent a suitable ex vivo model to study the functional impact of pharmacological treatments on human chronic obstructive pulmonary disorders, such as asthma and chronic obstructive pulmonary disease (COPD). We aimed to characterize the pharmacological interaction between the long-acting muscarinic antagonist (LAMA) tiotropium and the long-acting β2-agonist (LABA) olodaterol in equine airways. The effect of tiotropium and olodaterol, administered alone and in combination at the ratio of concentrations reproducing ex vivo the concentration-ratio delivered by the currently available fixed-dose combination (FDC) (5:5), was investigated on the cholinergic contractile tone induced by the parasympathetic activation of equine isolated airways...
July 26, 2017: COPD
https://www.readbyqxmd.com/read/28737051/pharmacokinetic-pharmacodynamic-drug-evaluation-of-benralizumab-for-the-treatment-of-asthma
#19
REVIEW
Maria Gabriella Matera, Luigino Calzetta, Barbara Rinaldi, Mario Cazzola
In many severe asthmatics, eosinophils cause inflammation and airways hyperresponsiveness, resulting in frequent exacerbations, impaired lung function, and reduced quality of life. Interleukin-5 (IL-5) is a key cytokine for eosinophil growth, differentiation, recruitment, activation, and survival. Anti-IL-5-based therapies (mepolizumab and reslizumab are humanized monoclonal antibodies (hmAbs) that recognize free IL-5, benralizumab is a hmAb directed at the α subunit of the IL-5R) target the IL-5-signaling in eosinophilic asthma...
September 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28732818/adherence-to-copd-treatment-myth-and-reality
#20
REVIEW
Paola Rogliani, Josuel Ora, Ermanno Puxeddu, Maria Gabriella Matera, Mario Cazzola
COPD is a chronic disease in which effective management requires long-term adherence to pharmacotherapies but the level of adhesion to the prescribed medications is very low and this has a negative influence on outcomes. There are several approaches to detect non-adherence, such as pharmacy refill methods, electronic monitoring, and self-report measures, but they are all burdened with important limitations. Medication adherence in COPD is multifactorial and is affected by patients (health beliefs, cognitive abilities, self-efficacy, comorbidities, psychological profile, conscientiousness), physicians (method of administration, dosing regimen, polypharmacy, side effects), and society (patient-prescriber relationship, social support, access to medication, device training, follow-up)...
August 2017: Respiratory Medicine
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