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https://www.readbyqxmd.com/read/28544631/spermatozoa-from-males-with-reduced-fecundity-exhibit-differential-dna-methylation-patterns
#1
M Laqqan, S Tierling, Y Alkhaled, C Lo Porto, E F Solomayer, M Hammadeh
Infertility affects 10-15% of couples, and approximately 50% of cases are linked to male factor infertility. The purpose of this study was to evaluate the DNA methylation patterns in spermatozoa from males who are suffering from a reduction in fecundity. Thirty samples were subjected to 450K arrays as a screening study to evaluate the variation in sperm DNA methylation levels between cases and controls groups, and then four CpG sites (cg05799088, cg07227024, cg16338278, and cg08408433) underwent to deep bisulfite sequencing to validate the observed methylation differences in 111 samples (56 proven fertile males as 'controls' and 55 males suffering from a reduction in fecundity as 'cases')...
May 23, 2017: Andrology
https://www.readbyqxmd.com/read/28539035/the-performance-of-serum-biomarkers-for-predicting-fibrosis-in-patients-with-chronic-viral-hepatitis
#2
Chang Seok Bang, Ha Yan Kang, Gyu Ho Choi, Suk Bae Kim, Wonae Lee, Il Han Song
Background/Aims: The invasiveness of a liver biopsy and its inconsistent results have prompted efforts to develop noninvasive tools to evaluate the severity of chronic hepatitis. This study was intended to assess the performance of serum biomarkers for predicting liver fibrosis in patients with chronic viral hepatitis. Methods: A total of 302 patients with chronic hepatitis B or C, who had undergone liver biopsy, were retrospectively enrolled. We investigated the diagnostic accuracy of several clinical factors for predicting advanced fibrosis (F≥3)...
May 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28538800/effect-of-aqueous-extract-of-the-leaves-of-baccharis-trimera-on-the-proliferation-of-hepatocytes-after-partial-hepatectomy-in-rats
#3
Sonia Oliveira Lima, Maria Bernadete Galrão de Almeida Figueiredo, Vanessa Rocha de Santana, Danillo Primo Andrade Santana, Matheus de Souza Nogueira, Erick Sobral Porto, Renata Lima Batalha de Andrade, Jessica Macêdo Santos, Ricardo Luiz Cavalcanti de Albuquerque, Juliana Cordeiro Cardoso
Purpose: To evaluate the effect of aqueous extract of Baccharis trimera leaves on the proliferative capacity of the liver after partial hepatectomy (PH) in rats. Methods: Twenty Wistar rats weighing between 300 and 450g were divided into two groups: control (HP) and test (HP100-rats that received the aqueous extract of Baccharis trimera for four days at a dose of 100 mg / kg / day). On the fifth day, animals from both groups underwent resection of 70% of the liver...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28537577/c-reactive-protein-in-brazilian-adolescents-distribution-and-association-with-metabolic-syndrome-in-erica-survey
#4
D T Giannini, M C C Kuschnir, C L de Oliveira, K V Bloch, B D Schaan, F V Cureau, K M B de Carvalho, G M Dias, M Szklo
BACKGROUND/OBJECTIVES: C-reactive protein (CRP) is a marker of inflammation that has been shown to be predictive of cardiovascular diseases in adults. To evaluate the distribution of CRP as well as its association with metabolic syndrome and its components. SUBJECTS/METHODS: This is a cross-sectional study on adolescents aged 12-17, participants in the Study of Cardiovascular Risk in Adolescents (ERICA). Anthropometric, biochemical and blood pressure data were collected from 6316 adolescents, selected from a random sample of students in the cities of Brasilia, Fortaleza, João Pessoa, Manaus, Porto Alegre and Rio de Janeiro...
May 24, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28536036/antimicrobial-activity-predictors-benchmark-using-shuffled-and-designed-synthetic-peptides
#5
William F Porto, Allan S Pires, Octavio L Franco
The antimicrobial activity prediction tools aim to help the novel antimicrobial peptides (AMP) sequences discovery, utilizing machine learning methods. Such approaches have gained increasing importance in the generation of novel synthetic peptides by means or rational design techniques. This study focused on predictive ability of such approaches to determine the antimicrobial sequence activities, which were previously characterized at the protein level by in vitro studies. Using four web servers, we evaluated 78 sequences generated by the so-called linguistic model, being 40 designed and 38 shuffled sequences, with ∼60 and ∼25 % of identity to AMPs, respectively...
May 20, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28534458/association-between-dietary-patterns-and-adiposity-from-4-to-7-years-of-age
#6
Catarina Durão, Milton Severo, Andreia Oliveira, Pedro Moreira, António Guerra, Henrique Barros, Carla Lopes
OBJECTIVE: The present study aimed to evaluate the association of 4-year-old children's dietary patterns with adiposity at 7 years, according to child's sex, using a conceptual model. DESIGN: Prospective cohort study. Diet was assessed using an FFQ. Age- and sex-specific BMI standard deviation scores (Z-scores) were defined according to the WHO. Fat mass percentage (FM%), fat mass index (FMI) and waist-to-height ratio (WHtR) were also considered, converted into Z-scores using sex-specific means and standard deviations of the current sample...
May 23, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28534139/pulmonary-emphysema-cross-linking-with-pulmonary-fibrosis-and-vice-versa-a-non-usual-experimental-intervention-with-elastase-and-bleomycin
#7
Isabella Cattani-Cavalieri, Adriane Graça Reis, Emanuel Kennedy-Feitosa, Vanessa Pinho-Ribeiro, Manuella Lanzetti, Lycia Brito Gitirana, Bruna Romana-Souza, Luis Cristóvão Porto, Samuel Santos Valença
Elastase (PPE) is usually used for emphysema models, whereas bleomycin (BLM) is used for fibrosis models. The aim of this study was to investigate the effect of BLM in PPE-induced emphysema, as well as the effect of PPE in BLM-induced fibrosis. C57BL/6 mice were divided into five groups: control, PPE, BLM, PPE + BLM, and BLM + PPE. Mice received saline, PPE (3 U/mouse), or BLM (20 U/kg) by intranasal instillation. Mice from the BLM and BLM + PPE groups received BLM on day 0 and saline or PPE on day 21, respectively...
May 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28523311/study-concerning-the-histopathological-changes-in-chronic-hepatopathies
#8
Cristian Marius Daina, Lucia Georgeta Daina, Marinela Bonta, Daniela Rahotă, Gabriela MuŢiu
Chronic liver diseases represent a public health problem both at global level and in our country. Their significance is due not only to the large number of cases but also to their severe complications and associated diseases, which increase the gravity of prognosis. Hepatopathies generally develop by formation and accumulation of fibrous tissue, which leads to architectural distortions in the structure of the liver. Hepatic fibrosis is the result of chronic injury and plays a direct role in the pathogenesis of the hepatocellular dysfunction and portal hypertension...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28514919/periconceptional-cmv-infection-prevention-in-portugal-population-subgroup-study-in-a-tertiary-perinatal-care-center
#9
Patrícia Sousa, Gabriel Madureira, Marina Moucho, Ana Lídia Sampaio-Dias, Nuno Montenegro
Currently in Portugal, universal screening of pregnant women for Cytomegalovirus (CMV) infection is not performed. However, it is recommended to screen all women attending preconception care. We aimed to assess women's attendance to preconception care and if their serologic status regarding CMV was known and/or investigated in that consultation. In this cross-sectional study, we interviewed 240 women admitted to the obstetrical ward of a hospital in the Metropolitan Area of Porto (Portugal) about their adherence to preconception care and collected data regarding their CMV serologic status and its investigation...
May 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28511735/addenbrooke-s-cognitive-examination-revised-normative-and-accuracy-data-for-seniors-with-heterogeneous-educational-level-in-brazil
#10
Karolina G César, Mônica S Yassuda, Fabio H G Porto, Sonia M D Brucki, Ricardo Nitrini
BACKGROUND: Several cognitive tools have been developed aiming to diagnose dementia. The cognitive battery Addenbrooke's Cognitive Examination - Revised (ACE-R) has been used to detect cognitive impairment; however, there are few studies including samples with low education. The aim of the study was to provide ACE-R norms for seniors within a lower education, including illiterates. An additional aim was to examine the accuracy of the ACE-R to detect dementia and cognitive impairment no dementia (CIND)...
May 17, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28506112/resting-bradycardia-enhanced-postexercise-heart-rate-recovery-and-cardiorespiratory-fitness-in-recreational-ballroom-dancers
#11
Carlos Janssen Gomes da Cruz, Guilherme Eckhardt Molina, Luiz Guilherme Grossi Porto, Luiz Fernando Junqueira
PURPOSE: In a cross-sectional study design, we evaluated the resting heart rate (HRbaseline) and exercise and postexercise stress test-related chronotropic responses in male practitioners of recreational ballroom dancing (BD; n = 25, Mage = 26.6 ± 6.1 years) compared to a control group of insufficiently active nondancers (CG; n = 25, Mage = 25.9 ± 4.5 years). METHOD: All participants underwent a submaximal exercise test. At 85% of the maximal predicted HR, the recovery protocol was started, and heart rate recovery (HRR) was recorded during 1-min intervals for 5 min...
May 16, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28503748/cigarette-smoking-induces-only-marginal-changes-in-sperm-dna-methylation-levels-of-patients-undergoing-intracytoplasmic-sperm-injection-treatment
#12
Y Al Khaled, S Tierling, M Laqqan, C Lo Porto, M E Hammadeh
DNA methylation plays important roles in genome stability and regulation of gene expression. This study was designed to determine the influence of cigarette smoking on sperm DNA methylation. From a genome-wide survey on sperm samples, differentially methylated target CpGs should be selected and subjected to local deep bisulphite sequencing. Obtained methylation data are compared to sperm parameters and (ICSI) outcome. Similar to pilot study, samples were subjected to Infinium 450K BeadChip arrays to identify alterations in sperm DNA methylation between smokers and nonsmokers males...
May 14, 2017: Andrologia
https://www.readbyqxmd.com/read/28503291/how-many-more-sample-size-determination-in-studies-of-morphological-integration-and-evolvability
#13
Mark Grabowski, Arthur Porto
1. The variational properties of living organisms are an important component of current evolutionary theory. As a consequence, researchers working on the field of multivariate evolution have increasingly used integration and evolvability statistics as a way of capturing the potentially complex patterns of trait association and their effects over evolutionary trajectories. Little attention has been paid, however, to the cascading effects that inaccurate estimates of trait covariance have on these widely used evolutionary statistics...
May 2017: Methods in Ecology and Evolution
https://www.readbyqxmd.com/read/28501536/multicenter-external-validation-of-risk-stratification-criteria-for-patients-with-variceal-bleeding
#14
Irene Conejo, Maria Anna Guardascione, Puneeta Tandon, Alba Cachero, Josep Castellote, Juan G Abraldes, Lucio Amitrano, Joan Genescà, Salvador Augustin
BACKGROUND & AIMS: Early placement of a transjugular intrahepatic porto-systemic shunts (TIPS) is considered the treatment of choice for patients with acute variceal bleeding (AVB) and cirrhosis who have a high risk of death (Child-Pugh class B with active bleeding at endoscopy or Child-Pugh class C). It has been proposed that patients of Child-Pugh class B, even with active bleeding, should not be considered high risk. Alternative criteria have been proposed for identification of high-risk patients, such as Child-Pugh class C with plasma level of creatinine of 1 mg/dl or more (ChildC-C1) and a model for end-stage liver disease (MELD) score of 19 or more...
May 10, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28501034/differences-in-the-students-perceptions-on-the-teaching-of-neuroanatomy-in-a-medical-curriculum-organized-by-disciplines-and-an-integrated-medical-curriculum
#15
Mavilde Arantes, Joselina Barbosa, Maria Amélia Ferreira
INTRODUCTION: On the subject of curriculum reform, most European medical schools are moving away from an educational approach consisting of discipline-based courses to an integrated curriculum. The aim of this study was to compare, in the Faculty of Medicine of the University of Porto, Portugal, the teaching of neuroanatomy in a medical curriculum organized by disciplines and in an integrated medical curriculum. MATERIAL AND METHODS: Two hundred sixty one students who completed the Curricular Unit with a discipline-based approach (Neuroanatomy) and 202 students who completed it with an integrated approach (Morphophysiology of the Nervous System) were asked to complete a questionnaire on their perceptions about the Curricular Unit...
January 31, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28499261/structural-signatures-of-water-soluble-organic-aerosols-in-contrasting-environments-in-south-america-and-western-europe
#16
Regina M B O Duarte, João T V Matos, Andreia S Paula, Sónia P Lopes, Guilherme Pereira, Pérola Vasconcellos, Adriana Gioda, Renato Carreira, Artur M S Silva, Armando C Duarte, Patricia Smichowski, Nestor Rojas, Odon Sanchez-Ccoyllo
This study describes and compares the key structural units present in water-soluble organic carbon (WSOC) fraction of atmospheric aerosols collected in different South American (Colombia - Medellín and Bogotá, Peru - Lima, Argentina - Buenos Aires, and Brazil - Rio de Janeiro, São Paulo, and Porto Velho, during moderate (MBB) and intense (IBB) biomass burning) and Western European (Portugal - Aveiro and Lisbon) locations. Proton nuclear magnetic resonance ((1)H NMR) spectroscopy was employed to assess the relative distribution of non-exchangeable proton functional groups in aerosol WSOC of diverse origin, for the first time to the authors' knowledge in South America...
May 9, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28492756/a-longitudinal-study-of-early-childhood-caries-and-associated-factors-in-brazilian-children
#17
Fabiane Piva, Joanna Tatith Pereira, Patrícia Blaya Luz, Lina Naomi Hashizume, Fernando Neves Hugo, Fernando Borba de Araujo
Early childhood caries (ECC) affects children all over the world and has high prevalence and severity in preschool children. Different social, biological and behavioral factors compose a network of causal factors for ECC. The aim was to evaluate the association between socioeconomic variables and caries at baseline, and the presence of Streptococcus mutans and Lactobacillus spp. microorganisms with the progression of caries lesions after two years of follow-up in a group of children. At baseline, 163 children (3-4 years old) living in the areas of 12 primary care services of the Hospital Group Conceição (GHC, Porto Alegre, RS, Brazil) were evaluated...
March 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28490781/identification-of-long-noncoding-rnas-deregulated-in-papillary-thyroid-cancer-and-correlated-with-braf-v600e-mutation-by-bioinformatics-integrative-analysis
#18
Lucas Goedert, Jessica Rodrigues Plaça, Cesar Seigi Fuziwara, Maiaro Cabral Rosa Machado, Desirée Rodrigues Plaça, Palloma Porto Almeida, Talita Perez Sanches, Jair Figueredo Dos Santos, Amanda Cristina Corveloni, Illy Enne Gomes Pereira, Marcela Motta de Castro, Edna Teruko Kimura, Wilson Araújo Silva, Enilza Maria Espreafico
Papillary Thyroid Cancer (PTC) is an endocrine malignancy in which BRAF(V600E) oncogenic mutation induces the most aggressive phenotype. In this way, considering that lncRNAs are arising as key players in oncogenesis, it is of high interest the identification of BRAF(V600E)-associated long noncoding RNAs, which can provide possible candidates for secondary mechanisms of BRAF-induced malignancy in PTC. In this study, we identified differentially expressed lncRNAs correlated with BRAF(V600E) in PTC and, also, extended the cohort of paired normal and PTC samples to more accurately identify differentially expressed lncRNAs between these conditions...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28482463/nanoencapsulation-of-lutein-and-its-effect-on-mice-s-declarative-memory
#19
Jéssica Thaís do Prado Silva, Júlia Maria Tonin Geiss, Sara Marchesan Oliveira, Evelyne da Silva Brum, Sara Cristina Sagae, Daniela Becker, Fernanda Vitória Leimann, Rafael Porto Ineu, Gustavo Petri Guerra, Odinei Hess Gonçalves
Lutein is a xanthophyll carotenoid widely known by its biological properties and low toxicity. When located in the brain, lutein may inhibit damage mechanisms, acting in neural cells maintenance. However, this carotenoid is very sensitive to external agents such as heat, light, pH and oxidation, besides presenting low absorption in gastrointestinal tract due its low solubility in water. Encapsulation procedures have shown promising results to increase lutein stability and bioavailability. In this work, lutein was encapsulated in polyvinylpyrrolidone (PVP) matrix by the dissolution in common solvent method...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28479910/sonographic-assessment-of-the-portal-vein-diameter-in-apparently-healthy-adults-in-a-northern-nigerian-population
#20
Geofery Luntsi, Mohammed Sani, Joseph Dlama Zira, Nwobi Chigozie Ivor, Sani H Garba
BACKGROUND: Sonography is a valuable tool in the assessment of porto-systemic pathologies. This study aimed at determining the mean portal vein diameter based on age, gender and anthropometric variables. METHODS: A cross sectional study conducted among 201 apparently healthy adults in Bauchi Metropolis. Participants were recruited from the school of nursing AbubakarTafawa Balewa Teaching Hospital (ATBUTH), Bauchi. Ultrasound machine ALOKA SSD-1000, (IP-1233EV, SN-57324, Japan) with curvilinear transducer with frequency of 3-5MHz was used for a period of four months, (December 2015 to April 2016)...
December 2016: African Health Sciences
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