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https://www.readbyqxmd.com/read/28820906/exposure-to-fine-particulate-matter-in-the-air-alters-placental-structure-and-the-renin-angiotensin-system
#1
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/28819835/efficacy-and-safety-of-linagliptin-in-2681-asian-patients-stratified-by-age-obesity-and-renal-function-a-pooled-analysis-of-randomized-clinical-trials
#2
Guang Ning, Tushar Bandgar, Uwe Hehnke, Jisoo Lee, Juliana C N Chan
INTRODUCTION: Asian patients with type 2 diabetes (T2D) are younger, leaner, and more likely to develop renal dysfunction than White populations. In this multiethnic analysis of data from phase 3 trials, we investigated the efficacy and safety of the dipeptidyl peptidase-4 inhibitor linagliptin in Asians stratified by these subphenotypes. METHODS: Data from randomized, double-blind, placebo-controlled trials evaluating linagliptin (as monotherapy, add-on therapy to metformin ± sulfonylurea, combined with pioglitazone or added to insulin) were pooled with efficacy data from 11 randomized trials of at least 24 weeks and safety data from 15 trials of various durations...
August 17, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28819627/pharmacokinetics-and-pharmacodynamics-evaluation-of-tramadol-in-thermoreversible-gels
#3
Juliana Zampoli Boava Papini, Cíntia Maria Saia Cereda, José Pedrazzoli Júnior, Silvana Aparecida Calafatti, Daniele Ribeiro de Araújo, Giovana Radomille Tofoli
We evaluated pharmacokinetics (PK) and pharmacodynamics (PD) induced by new formulations of tramadol (TR) in thermoreversible gels. The poloxamer- (PL-) tramadol systems were prepared by direct dispersion of the drug in solutions with PL 407 and PL 188. The evaluated formulations were as follows: F1: TR 2% in aqueous solution and F2: PL 407 (20%) + PL 188 (10%) + TR 2%; F3: PL 407 (25%) + PL 188 (5%) + TR 2%; F4: PL 407 (20%) + TR 2%. New Zealand White rabbits were divided into four groups (n = 6) and treated by subcutaneous route with F1, F2, F3, or F4 (10 μg·kg(-1))...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28819378/hif-is-not-essential-for-suppression-of-experimental-tumor-growth-by-mtor-inhibition
#4
Karl X Knaup, Regina Guenther, Johanna Stoeckert, Juliana M Monti, Kai-Uwe Eckardt, Michael S Wiesener
The Hypoxia Inducible Transcription Factor (HIF) is the master regulator of cellular response to hypoxic adaptation. Solid tumors inevitably harbour hypoxic regions with subsequent stabilization and activation of HIF and HIF target genes due to poor vascularization and rapid growth. The mammalian target of rapamycin (mTOR) is a global regulator of cellular growth and proliferation, which can also regulate HIF expression independantly of hypoxia via specific activation of cellular translation and transcription...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28819299/the-correlation-between-crb1-variants-and-the-clinical-severity-of-brazilian-patients-with-different-inherited-retinal-dystrophy-phenotypes
#5
Fabiana Louise Motta, Mariana Vallim Salles, Karita Antunes Costa, Rafael Filippelli-Silva, Renan Paulo Martin, Juliana Maria Ferraz Sallum
Inherited retinal dystrophies are characterized by progressive retina degeneration and mutations in at least 250 genes have been associated as disease-causing. CRB1 is one of many genes analyzed in molecular diagnosis for inherited retinal dystrophy. Crumbs homolog-1 protein encoded by CRB1 is important for cell-to-cell contact, polarization of epithelial cells and the morphogenesis of photoreceptors. Pathogenic variants in CRB1 lead to a huge variety of phenotypes ranging from milder forms of inherited retinal dystrophy, such as retinitis pigmentosa to more severe phenotypes such as Leber congenital amaurosis...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28816367/the-in-vitro-and-in-vivo-antiangiogenic-effects-of-flavokawain-b
#6
Mariana C Rossette, Débora C Moraes, Erika K Sacramento, Marco Aurélio Romano-Silva, Juliana L Carvalho, Dawidson A Gomes, Hanna Caldas, Eitan Friedman, Luciana Bastos-Rodrigues, Luiz De Marco
Angiogenesis is implicated in the development of a variety of pathological processes, most commonly cancer. It is essential for tumor growth and metastasis, making it an important cancer therapeutic target. Naturally occurring substances have led to the discovery of anticancer agents. Flavokawain B (FKB), a chalcone isolated from the root extracts of kava-kava plant, inhibits proliferation and causes apoptosis in vitro and in vivo of various cancer cell lines. The antimetastatic potential of FKB has also been suggested...
August 17, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28815661/effectiveness-of-oral-health-education-on-oral-hygiene-and-dental-caries-in-schoolchildren-systematic-review-and-meta-analysis
#7
Caroline Stein, Nathália Maria Lopes Santos, Juliana Balbinot Hilgert, Fernando Neves Hugo
OBJECTIVES: The objective of this study was to evaluate the effectiveness of oral health educational actions in the school context in improving oral hygiene and dental caries in schoolchildren through systematic review and meta-analysis. METHODS: Clinical trials with schoolchildren between 5 and 18 years old were included. Eligible studies were those which had as outcomes caries, plaque accumulation, gingivitis, toothache or tooth loss and which had been published from 1995 to 2015, in any language...
August 16, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28813090/brazilian-consensus-on-duchenne-muscular-dystrophy-part-1-diagnosis-steroid-therapy-and-perspectives
#8
Alexandra P Q C Araujo, Alzira A S de Carvalho, Eduardo B U Cavalcanti, Jonas Alex M Saute, Elmano Carvalho, Marcondes C França, Alberto R M Martinez, Monica de M M Navarro, Anamarli Nucci, Maria Bernadete D de Resende, Marcus Vinicius M Gonçalves, Juliana Gurgel-Giannetti, Rosana H Scola, Cláudia F da R Sobreira, Umbertina C Reed, Edmar Zanoteli
Significant advances in the understanding and management of Duchenne muscular dystrophy (DMD) took place since international guidelines were published in 2010. Our objective was to provide an evidence-based national consensus statement for multidisciplinary care of DMD in Brazil. A combination of the Delphi technique with a systematic review of studies from 2010 to 2016 was employed to classify evidence levels and grade of recommendations. Our recommendations were divided in two parts. We present Part 1 here, where we describe the guideline methodology and overall disease concepts, and also provide recommendations on diagnosis, steroid therapy and new drug treatment perspectives for DMD...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28813069/atualiza%C3%A3-%C3%A3-o-da-diretriz-brasileira-de-dislipidemias-e-preven%C3%A3-%C3%A3-o-da-aterosclerose-%C3%A2-2017
#9
André Arpad Faludi, Maria Cristina de Oliveira Izar, José Francisco Kerr Saraiva, Ana Paula Marte Chacra, Henrique Tria Bianco, Abrahão Afiune, Adriana Bertolami, Alexandre C Pereira, Ana Maria Lottenberg, Andrei C Sposito, Antonio Carlos Palandri Chagas, Antonio Casella, Antônio Felipe Simão, Aristóteles Comte de Alencar, Bruno Caramelli, Carlos Costa Magalhães, Carlos Eduardo Negrão, Carlos Eduardo Dos Santos Ferreira, Carlos Scherr, Claudine Maria Alves Feio, Cristiane Kovacs, Daniel Branco de Araújo, Daniel Magnoni, Daniela Calderaro, Danielle Menosi Gualandro, Edgard Pessoa de Mello, Elizabeth Regina Giunco Alexandre, Emília Inoue Sato, Emilio Hideyuki Moriguchi, Fabiana Hanna Rached, Fábio César Dos Santos, Fernando Henpin Yue Cesena, Francisco Antonio Helfenstein Fonseca, Henrique Andrade Rodrigues da Fonseca, Hermes Toros Xavier, Isabela Cardoso Pimentel Mota, Isabela de Carlos Back Giuliano, Jaqueline Scholz Issa, Jayme Diament, João Bosco Pesquero, José Ernesto Dos Santos, José Rocha Faria, José Xavier de Melo, Juliana Tieko Kato, Kerginaldo Paulo Torres, Marcelo Chiara Bertolami, Marcelo Heitor Vieira Assad, Márcio Hiroshi Miname, Marileia Scartezini, Neusa Assumpta Forti, Otávio Rizzi Coelho, Raul Cavalcante Maranhão, Raul Dias Dos Santos, Renato Jorge Alves, Roberta Lara Cassani, Roberto Tadeu Barcellos Betti, Tales de Carvalho, Tânia Leme da Rocha Martinez, Viviane Zorzanelli Rocha Giraldez, Wilson Salgado
No abstract text is available yet for this article.
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28812567/high-taxonomic-variability-despite-stable-functional-structure-across-microbial-communities
#10
Stilianos Louca, Saulo M S Jacques, Aliny P F Pires, Juliana S Leal, Diane S Srivastava, Laura Wegener Parfrey, Vinicius F Farjalla, Michael Doebeli
Understanding the processes that are driving variation of natural microbial communities across space or time is a major challenge for ecologists. Environmental conditions strongly shape the metabolic function of microbial communities; however, other processes such as biotic interactions, random demographic drift or dispersal limitation may also influence community dynamics. The relative importance of these processes and their effects on community function remain largely unknown. To address this uncertainty, here we examined bacterial and archaeal communities in replicate 'miniature' aquatic ecosystems contained within the foliage of wild bromeliads...
December 5, 2016: Nature ecology & evolution
https://www.readbyqxmd.com/read/28809744/effect-of-vitamin-d-serum-levels-and-gc-gene-polymorphisms-in-liver-fibrosis-due-to-chronic-hepatitis-c
#11
Laura A Azevedo, Ursula Matte, Themis R Silveira, Jacqueline W Bonfanti, Juliana P Bruch, Mário R Álvares-da-Silva
INTRODUCTION AND AIM: Vitamin D has been associated with chronic liver diseases and low vitamin levels may contribute to progression of chronic hepatitis C. The aim of this study was to evaluate the influence of vitamin D serum levels and GC gene polymorphisms in the severity of liver fibrosis in patients with chronic hepatitis C genotype 1. MATERIAL AND METHODS: Cross-sectional study that enrolled 132 adult patients with chronic hepatitis C genotype 1 attended at the outpatient Clinic of Gastroenterology Division at Hospital de Clínicas de Porto Alegre...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28809435/first-case-report-of-non-human-primates-alouatta-clamitans-with-the-hypervirulent-klebsiella-pneumoniae-serotype-k1-strain-st-23-a-possible-emerging-wildlife-pathogen
#12
Eleine Kuroki Anzai, Júlio César de Souza Júnior, Amanda Rezende Peruchi, Juliana Mello Fonseca, Elke Kreuscher Gumpl, Antônio Carlos Campos Pignatari, Zelinda Maria Braga Hirano, Alessandro Conrado de Oliveira Silveira
BACKGROUND: Hypervirulent strain of Klebsiella pneumoniae genotype K1 isolates have recently emerged, causing severe pyogenic liver abscess complicated by devastating metastatic infections in humans. METHODS: We describe a short outbreak of the non-human primate (NHP) research center, associated with a hypervirulent K. pneumoniae. The genetic similarity of the strains was evaluated by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) techniques, and virulence encoding genes were detected by polymerase chain reaction (PCR)...
August 15, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28808463/micro-push-out-bond-strength-and-bioactivity-analysis-of-a-bioceramic-root-canal-sealer
#13
Ceci Nunes Carvalho, Renata Grazziotin-Soares, George Táccio de Miranda Candeiro, Luis Gallego Martinez, Juliana Pereira de Souza, Patrícia Santos Oliveira, José Bauer, Giulio Gavini
INTRODUCTION: Bioactive endodontic sealers have been developed to improve the quality of root canal obturation. EndoSequence Bioceramic (BC) Sealer is amongst calcium silicate-based materials recently developed for permanent root canal filling. The objective of this study was to evaluate the bioactivity of BC Sealer and its micro push-out bond strength to dentin compared to AH-Plus (AH) sealer. METHODS AND MATERIALS: To perform the micro push-out test, 24 root canals of mandibular premolars were instrumented and divided into two groups (n=12)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28808462/temperature-rises-in-the-pulp-chamber-with-different-techniques-of-orthodontic-adhesive-removal
#14
Maurício Barbieri Mezomo, Juliana Abreu, Juliana Weber, Renato Dalla Porta Garcia, José Antônio Poli Figueiredo, Eduardo Martinelli de Lima
INTRODUCTION: The aim of this in vitro study was to compare the temperature rises in the pulp chamber and time spent with different techniques for orthodontic resin adhesive removal. METHODS AND MATERIALS: Adhesive removal was performed in 20 extracted human maxillary second premolars with five techniques: high-speed tungsten carbide burs with water-cooling (BurH-cool) and without cooling (BurH), low-speed carbide burs (BurL), low-speed aluminum-oxide discs (DiscL), and low-speed fiberglass burs (BurFGL)...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28807888/spectroscopic-and-calorimetric-assays-reveal-dependence-on-dctp-and-two-metals-zn-2-mg-2-for-enzymatic-activity-of-schistosoma-mansoni-deoxycytidylate-dcmp-deaminase
#15
Jéssica Fernandes Scortecci, Vitor Hugo Balasco Serrão, Juliana Cheleski, Juliana Roberta Torini, Larissa Romanello, Ricardo DeMarco, Humberto D'Muniz Pereira
The parasite Schistosoma mansoni possess all pathways for pyrimidine biosynthesis, whereby deaminases play an essential role in the thymidylate cycle, a crucial step to controlling the ratio between cytidine and uridine nucleotides. In this study, we heterologously expressed and purified the deoxycytidylate (dCMP) deaminase from S. mansoni to obtain structural, biochemical and kinetic information. Small-angle X-ray scattering of this enzyme showed that it is organized as a hexamer in solution. Isothermal titration calorimetry was used to determine the kinetic constants for dCMP-dUMP conversion and the role of dCTP and dTTP in enzymatic regulation...
August 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28806782/the-use-of-18f-fluoro-deoxy-glucose-positron-emission-tomography-18f-fdg-pet-as-a-non-invasive-pharmacodynamic-biomarker-to-determine-the-minimally-pharmacologically-active-dose-of-azd8835-a-novel-pi3k%C3%AE-inhibitor
#16
Juliana Maynard, Sally-Ann Emmas, Francois-Xavier Ble, Herve Barjat, Emily Lawrie, Urs Hancox, Urszula M Polanska, Alison Pritchard, Kevin Hudson
BACKGROUND: The phosphatidyl inositol 3 kinase (PI3K), AKT and mammalian target of rapamycin (mTOR) signal transduction pathway is frequently de-regulated and activated in human cancer and is an important therapeutic target. AZD8835 is a PI3K inhibitor, with selectivity against PI3K α and δ isoforms, which is currently in Phase 1 clinical trials. 18F-Fluoro-deoxy-glucose positron emission tomography (18F-FDG PET) is a non-invasive pharmacodynamic imaging biomarker that has become an integral part of drug development...
2017: PloS One
https://www.readbyqxmd.com/read/28803140/a-competent-catalytic-active-site-is-necessary-for-substrate-induced-dimer-assembly-in-triosephosphate-isomerase
#17
Pedro Jimenez-Sandoval, Jose Luis Vique-Sanchez, Marisol López Hidalgo, Gilberto Velazquez-Juarez, Corina Diaz-Quezada, Luis Fernando Arroyo-Navarro, Gabriela Montero Moran, Juliana Fattori, A Jessica Diaz-Salazar, Enrique Rudiño-Pinera, Rogerio Sotelo-Mundo, Ana Carolina Migliorini Figueira, Samuel Lara-Gonzalez, Claudia G Benítez-Cardoza, Luis G Brieba
The protozoan parasite Trichomonas vaginalis contains two nearly identical triosephosphate isomerases (TvTIMs) that dissociate into stable monomers and dimerize upon substrate binding. Herein, we compare the role of the "ball and socket" and loop 3 interactions in substrate assisted dimer assembly in both TvTIMs. We found that point mutants at the "ball" are only 39 and 29-fold less catalytically active than their corresponding wild-type counterparts, whereas loop 3 deletions are 1502 and 9400-fold less active...
August 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28803133/predictive-value-of-multiple-cytokines-and-chemokines-for-mortality-in-an-admixed-population-15-year-follow-up-of-the-bambui-epigen-brazil-cohort-study-of-aging
#18
Maria Fernanda Lima-Costa, Juliana Vaz de Melo Mambrini, Karen Cecília de Lima Torres, Sérgio Viana Peixoto, Cesar de Oliveira, Eduardo Tarazona-Santos, Andréa Teixeira-Carvalho, Olindo Assis Martins-Filho
Inflammation, particularly elevated IL-6 serum levels, has been associated with increased mortality risk, mostly in Caucasians. The influence of genetic ethno-racial background on this association is unknown. We examined associations between baseline serum levels of Interleukin-6 (IL-6) and other cytokines (IL1-2, TNF, IL-10, and IL1β) and chemokines (CCL2, CCL5, CXCL8, CXCL9 and CXCL10) with 15-year mortality in 1,191 admixed Brazilians aged 60years and over. Elevated IL6 level (but not other biomarkers) was associated with increased risk of deaths with fully adjusted hazard ratios of 1...
August 9, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28802848/structure-and-intracellular-antioxidant-activity-of-pectic-polysaccharide-from-acerola-malpighia-emarginata
#19
Rafael Roberto Klosterhoff, Juliana Müller Bark, Nícolas Manzke Glänzel, Marcello Iacomini, Gláucia Regina Martinez, Sheila M B Winnischofer, Lucimara M C Cordeiro
Malpighia emarginata is a tropical fruit plant, found naturally in the Caribbean islands and South America that produces an edible fruit known as acerola or Barbados Cherry. Its polysaccharides were obtained by aqueous extraction, subjected to a freezing and thawing process and ultrafiltration. A homogeneous fraction (ACWS-01E) was analyzed by sugar composition, HPSEC, methylation and NMR spectroscopy analyses. The results showed an arabinan-rich pectic polysaccharide, with 6.1×10(4)g/mol and formed mainly by a high methyl esterified (DM=86%) homogalacturonan and branched arabinan...
August 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28802701/acyl-modification-and-binding-of-mitochondrial-acp-to-multiprotein-complexes
#20
Heike Angerer, Stefan Schönborn, Jan Gorka, Ute Bahr, Michael Karas, Ilka Wittig, Juliana Heidler, Jan Hoffmann, Nina Morgner, Volker Zickermann
The mitochondrial acyl carrier protein (ACPM/NDUFAB1) is a central element of the mitochondrial fatty acid synthesis type II machinery. Originally ACPM was detected as a subunit of respiratory complex I but the reason for the association with the large enzyme complex remained elusive. Complex I from the aerobic yeast Yarrowia lipolytica comprises two different ACPMs, ACPM1 and ACPM2. They are anchored to the protein complex by LYR (leucine-tyrosine-arginine) motif containing protein (LYRM) subunits LYRM3 (NDUFB9) and LYRM6 (NDUFA6)...
August 9, 2017: Biochimica et Biophysica Acta
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