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https://www.readbyqxmd.com/read/28812567/high-taxonomic-variability-despite-stable-functional-structure-across-microbial-communities
#1
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/28807610/genome-sequencing-of-two-bacillus-anthracis-strains-a-virulent-strain-and-a-vaccinal-strain
#2
Franciele Maboni Siqueira, Samuel Paulo Cibulski, Fabiana Quoos Mayer, David Driemeier, Saulo Petinatti Pavarini, Agueda Palmira Castagna de Vargas
Bacillus anthracis strain SPV842_15 was isolated from bovine fetus, while B. anthracis strain Brazilian vaccinal was recovered from a commercial vaccine. We report here the genome sequences of both strains. The SPV842_15 genome is composed of a single circular chromosome with a length of 5,228,664 base pairs, and comprises 5911 coding sequences. In turn, the Brazilian vaccinal genome remains in 201 contigs with 5733 coding sequences. Both genomes have an overall C+G content of 35.4%, and 11 genes encoding the ribosomal RNAs (rRNAs) 5S, 16S and 23S...
July 31, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28798938/evidence-for-tissue-toxicity-in-balb-c-exposed-to-a-long-term-treatment-with-oxiranes-compared-to-meglumine-antimoniate
#3
Luiz Filipe Gonçalves Oliveira, Franklin Souza-Silva, Léa Cysne-Finkelstein, Kíssila Rabelo, Juliana Fernandes Amorim, Adriana de Souza Azevedo, Saulo Cabral Bourguignon, Vitor Francisco Ferreira, Marciano Viana Paes, Carlos Roberto Alves
Leishmaniasis remains a serious public health problem in developing countries without effective control, whether by vaccination or chemotherapy. Part of the failure of leishmaniasis control is due to the lack of new less toxic and more effective drugs able to eliminate both the lesions and the parasite. Oxiranes derived from naphthoquinones now being assayed are promising drugs for the treatment of this group of diseases. The predicted pharmacokinetic properties and toxicological profiles of epoxy-α-lapachone and epoxymethoxy-lawsone have now been compared to those of meglumine antimoniate, and histological changes induced by these drugs in noninfected BALB/c mice tissues are described...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28781768/co-evolution-techniques-are-reshaping-the-way-we-do-structural-bioinformatics
#4
REVIEW
Saulo de Oliveira, Charlotte Deane
Co-evolution techniques were originally conceived to assist in protein structure prediction by inferring pairs of residues that share spatial proximity. However, the functional relationships that can be extrapolated from co-evolution have also proven to be useful in a wide array of structural bioinformatics applications. These techniques are a powerful way to extract structural and functional information in a sequence-rich world.
2017: F1000Research
https://www.readbyqxmd.com/read/28759886/divergent-temperaments-are-associated-with-beef-tenderness-and-the-inhibitory-activity-of-calpastatin
#5
Marcelo Aranda da Silva Coutinho, Patricia Maloso Ramos, Saulo da Luz E Silva, Luciane Silva Martello, Angélica Simone Cravo Pereira, Eduardo Francisquine Delgado
Ninety-six feedlot-finished Nellore steers were used to verify the relationship between temperament indicators and meat tenderization. Temperament index (TI), chute score (CS), and average of exit velocity (EV) with CS (AT) presented low positive correlations (P≤0.05) with shear force, either at 2 or 16days postmortem (WBSF-16). The rectal temperature was consistently correlated with temperament indicators (TI, CS, and AT) and WBSF-16. Two groups (n=12) representing the most tender (39.2±4.9N) and most tough meat (94...
July 14, 2017: Meat Science
https://www.readbyqxmd.com/read/28759578/heterologous-expression-of-the-antimyotoxic-protein-dm64-in-pichia-pastoris
#6
Saulo Martins Vieira, Surza Lucia Gonçalves da Rocha, Ana Gisele da Costa Neves-Ferreira, Rodrigo Volcan Almeida, Jonas Perales
Snakebite envenomation is a neglected condition that constitutes a public health problem in tropical and subtropical countries, including Brazil. Interestingly, some animals are resistant to snake envenomation due to the presence of inhibitory glycoproteins in their serum that target toxic venom components. DM64 is an acidic glycoprotein isolated from Didelphis aurita (opossum) serum that has been characterized as an inhibitor of the myotoxicity induced by bothropic toxins bearing phospholipase A2 (PLA2) structures...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28735712/analysis-of-polychlorinated-dibenzo-p-dioxins-and-dibenzofurans-in-stack-gas-emissions-by-gas-chromatography-atmospheric-pressure-chemical-ionization-triple-quadrupole-mass-spectrometry
#7
J Rivera-Austrui, K Martínez, M Ábalos, C Sales, T Portoles, J Beltran, J Sauló, B H Aristizábal, E Abad
A gas chromatography coupled to triple-quadrupole mass spectrometry (GC-(QqQ)MS/MS) including a soft-ionization through an atmospheric pressure chemical ionization (APCI) source based method was compared with the high resolution mass spectrometry (HRMS) standard reference method EN1948, for the analysis of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) in stack gas emissions. The stack emission samples were collected, both, by manual method sampling (from 6 to 8h) and by long-term sampling systems (sampling time of several weeks)...
July 12, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28721503/salinity-drives-the-virioplankton-abundance-but-not-production-in-tropical-coastal-lagoons
#8
Pedro C Junger, André M Amado, Rodolfo Paranhos, Anderson S Cabral, Saulo M S Jacques, Vinicius F Farjalla
Viruses are the most abundant components of microbial food webs and play important ecological and biogeochemical roles in aquatic ecosystems. Virioplankton is regulated by several environmental factors, such as salinity, turbidity, and humic substances. However, most of the studies aimed to investigate virioplankton regulation were conducted in temperate systems combining a limited range of environmental variables. In this study, virus abundance and production were determined and their relation to bacterial and limnological variables was assessed in 20 neighboring shallow tropical coastal lagoons that present wide environmental gradients of turbidity (2...
July 18, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28717379/hepatoprotective-effect-of-citral-on-acetaminophen-induced-liver-toxicity-in-mice
#9
Nancy Sayuri Uchida, Saulo Euclides Silva-Filho, Gabriel Fernando Esteves Cardia, Edivaldo Cremer, Francielli Maria de Souza Silva-Comar, Expedito Leite Silva, Ciomar Aparecida Bersani-Amado, Roberto Kenji Nakamura Cuman
High doses of acetaminophen (APAP) lead to acute liver damage. In this study, we evaluated the effects of citral in a murine model of hepatotoxicity induced by APAP. The liver function markers alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and gamma-glutamyl transferase (γGT) were determined to evaluate the hepatoprotective effects of citral. The livers were used to determine myeloperoxidase (MPO) activity and nitric oxide (NO) production and in histological analysis...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28713535/strength-training-with-repetitions-to-failure-does-not-provide-additional-strength-and-muscle-hypertrophy-gains-in-young-women
#10
Saulo Martorelli, Eduardo Lusa Cadore, Mikel Izquierdo, Rodrigo Celes, André Martorelli, Vitor Alonso Cleto, José Gustavo Alvarenga, Martim Bottaro
This study investigated the effects of a 10-week resistance training to failure on neuromuscular adaptations in young women. Eighty-nine active young women were randomly assigned to one of three groups: 1) repetitions to failure (RF; three sets of repetitions to failure); 2) repetitions not to failure with equalized volume (RNFV; four sets of 7 repetitions); and 3) repetitions not to failure (RNF; three sets of 7 repetitions). All groups performed the elbow flexor exercise (bilateral biceps curl) and trained 2 days per week using 70% of 1RM...
June 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28709370/sewers-as-potential-reservoirs-of-antibiotic-resistance
#11
Olga Auguet, Maite Pijuan, Carles M Borrego, Sara Rodriguez-Mozaz, Xavier Triadó-Margarit, Saulo Varela Della Giustina, Oriol Gutierrez
Wastewater transport along sewers favors the colonization of inner pipe surfaces by wastewater-derived microorganisms that grow forming biofilms. These biofilms are composed of rich and diverse microbial communities that are continuously exposed to antibiotic residues and antibiotic resistant bacteria (ARB) from urban wastewater. Sewer biofilms thus appear as an optimal habitat for the dispersal and accumulation of antibiotic resistance genes (ARGs). In this study, the concentration of antibiotics, integron (intI1) and antibiotic resistance genes (qnrS, sul1, sul2, blaTEM, blaKPC, ermB, tetM and tetW), and potential bacterial pathogens were analyzed in wastewater and biofilm samples collected at the inlet and outlet sections of a pressurized sewer pipe...
July 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28693992/characterization-of-a-recombinant-xylose-tolerant-%C3%AE-xylosidase-from-humicola-grisea-var-thermoidea-and-its-use-in-sugarcane-bagasse-hydrolysis
#12
Lorena Cardoso Cintra, Amanda Gregorim Fernandes, Izadora Cristina Moreira de Oliveira, Saulo J Linhares Siqueira, Ilítia Ganaê Oliveira Costa, Francieli Colussi, Rosália Santos Amorim Jesuíno, Cirano José Ulhoa, Fabrícia Paula de Faria
One full-length β-xylosidase gene (hxylA) was identified from the Humicola grisea var. thermoidea genome and the cDNA was successfully expressed by Pichia pastoris SMD1168. An optimization of enzyme production was carried out, and methanol was found to be the most important parameter. The purified enzyme was characterized and showed the optimal conditions for the highest activity at pH 7.0 and 50°C, being thermostable by maintaining 41% of its activity after 12h incubated at 50°C. HXYLA is a bifunctional enzyme; it showed both β-xylosidase and α-arabinfuranosidase activities...
July 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28690085/comparison-of-cone-beam-computed-tomography-and-digital-intraoral-radiography-performance-in-the-detection-of-artificially-induced-recurrent-caries-like-lesions
#13
Saulo Leonardo Sousa Melo, Manuella Dias Furtado Belem, Lucia Trazzi Prieto, Cinthia Pereira Machado Tabchoury, Francisco Haiter-Neto
OBJECTIVES: The aim of this study was to compare the performance of cone beam computed tomography (CBCT) and digital radiography in the detection of artificial recurrent caries-like lesions under amalgam and composite fillings. STUDY DESIGN: The study included class II cavities in 30 molars that had been filled with amalgam. Fifteen of those molars had the restoration-enamel interface artificially demineralized. Phantoms were prepared, and CBCT images were acquired with 2 units in 3 voxel sizes (K9000, 0...
May 11, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28675812/pre-emptive-effect-of-dexamethasone-and-diclofenac-sodium-associated-with-codeine-on-pain-swelling-and-trismus-after-third-molar-surgery-a-split-mouth-randomized-triple-blind-controlled-clinical-trial
#14
Thiago César Lima, Elizabete Bagordakis, Saulo Gabriel Moreira Falci, Cássio Roberto Rocha Dos Santos, Marcos Luciano Pimenta Pinheiro
PURPOSE: We aimed to compare the effect of dexamethasone, 8 mg, and diclofenac sodium, 50 mg, associated with codeine, 50 mg, on the control of pain, swelling, and trismus after extraction of impacted third molars. MATERIALS AND METHODS: Fifteen healthy patients with a mean age of 22.8 years (SD, 12.62 years) received a single oral dose of either drug 1 hour before each surgical procedure (left and right teeth). At 24, 48, and 72 hours after surgery, swelling was determined by use of linear measurements on the face and trismus was determined by maximal mouth opening...
June 14, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28641157/design-synthesis-and-structure-activity-relationship-studies-of-a-novel-focused-library-of-2-3-4-substituted-oxazolidines-with-antiproliferative-activity-against-cancer-cell-lines
#15
Saulo F Andrade, Bárbara G Oliveira, Larissa C Pereira, Jonas P Ramos, Angélica R Joaquim, Martin Steppe, Elaine M Souza-Fagundes, Ricardo J Alves
In the present work we describe the synthesis and antiproliferative evaluation of a focused library of 30 novel oxazolidines designed by modification of N-substituent, by ring variation, by alkyl variation or by extension of the structure. It was noted that carbamate and N,O-aminal groups were essential for activity. In general, replacement of the phenyl ring with pyridinyl was not tolerated. However, the introduction of a second phenyl ring with an appropriate spacer at the 3- or 4-position of the first phenyl ring generally enhanced the cytotoxic profile...
June 12, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28604146/clients-and-carers-perception-of-mental-illness-and-factors-that-influence-help-seeking-where-they-go-first-and-why
#16
Harris K Chilale, Ndumanene Devlin Silungwe, Saulos Gondwe, Charles Masulani-Mwale
OBJECTIVE: In Northern Malawi, the duration of untreated psychosis (DUP) is longer than that in high-income countries. The reasons for the delay in help-seeking are not known, although studies show multiple reasons. This research was conducted to establish health care help-seeking behaviours and identify barriers that exist between service users and health care providers. The study also intended to establish the beliefs that clients and family members have regarding the causes of mental illness which profoundly shape help-seeking, care giving process and outcomes...
June 1, 2017: International Journal of Social Psychiatry
https://www.readbyqxmd.com/read/28602259/assessment-of-condyle-position-fossa-morphology-and-disk-displacement-in-symptomatic-patients
#17
Katharina Alves Rabelo, Saulo Leonardo Sousa Melo, Marianna Guanaes Gomes Torres, Larissa Rangel Peixoto, Paulo Sérgio Flores Campos, Iêda Margarida Crusoé Rocha Rebello, Daniela Pita de Melo
OBJECTIVE: The aim of the study was to determine whether there are any associations between the morphology of the glenoid fossa, articular spaces, and disk displacement by evaluating the magnetic resonance imaging (MRI) scans of symptomatic patients. Gender and age were also evaluated for any effect on the parameters. STUDY DESIGN: MRI scans of 199 temporomandibular joints were assessed for the morphology of the glenoid fossa and articular spaces in both sagittal and coronal views...
April 19, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28597384/toxicity-against-drosophila-melanogaster-and-antiedematogenic-and-antimicrobial-activities-of-alternanthera-brasiliana-l-kuntze-amaranthaceae
#18
Henrique Douglas Melo Coutinho, Cícera Datiane de Morais Oliveira-Tintino, Saulo Relison Tintino, Raimundo Luiz Silva Pereira, Thiago Sampaio de Freitas, Maria Arlene Pessoa da Silva, Jeferson Luis Franco, Francisco Assis Bezerra da Cunha, José Galberto Martins da Costa, Irwin Rose Alencar de Menezes, Aline Augusti Boligon, João Batista Teixeira da Rocha, Maria Ivaneide Rocha, Joycy Francely Sampaio Dos Santos
Bioactive phytocompounds are studied by several bioactivities demonstrated, as their cytotoxic effects. The aim of this work was to evaluate the phytochemical profile, the toxic effect using the Drosophila melanogaster animal model and the anti-inflammatory and antimicrobial effect of the Alternanthera brasiliana (EEAB) ethanol extract. The phytochemical profile was performed using HPLC. The cytotoxic effect was evaluated in vivo using D. melanogaster. The anti-inflammatory effect was determined by neurogenic and antiedematogenic assays, and the antimicrobial activity was assayed using a microdilution method to determine the minimum inhibitory concentration (MIC) of the EEAB alone and in association with antibiotics...
June 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28597210/multiple-desmoplastic-cellular-neurothekeomas-in-child-report-of-the-first-oral-case-and-review-of-the-literature
#19
Tatiana Fernandes Araújo Almeida, Flaviana Dornela Verli, Cássio Roberto Rocha Dos Santos, Saulo Gabriel Moreira Falci, Luciana Yamamoto Almeida, Lana Kei Yamamoto Almeida, Ana Terezinha Marques Mesquita, Jorge Esquiche León
Cellular neurothekeomas (CNs) are distinctive benign tumors of uncertain histogenesis, with predilection for the skin of the head and neck region. We describe the first case of multiple desmoplastic CNs (DCNs) affecting the oral cavity in a 9-year-old girl. Histopathologic evaluation showed a proliferation of spindle and epithelioid cells, forming nests and bundles, supported by exuberant fibrous stroma, as well as scattered multinucleated floret-like giant cells. The tumor cells were immunopositive for vimentin, CD63, CD56, whereas AE1/AE3, S100, CD34, α-SMA, GFAP, EMA, CD57 and NSE were negative...
June 8, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28595855/dissociated-time-course-between-peak-torque-and-total-work-recovery-following-bench-press-training-in-resistance-trained-men
#20
Diogo V Ferreira, Paulo Gentil, João B Ferreira-Junior, Saulo R S Soares, Lee E Brown, Martim Bottaro
OBJECTIVE: To evaluate the time course of peak torque and total work recovery after a resistance training session involving the bench press exercise. DESIGN: Repeated measures with a within subject design. METHODS: Twenty-six resistance-trained men (age: 23.7±3.7years; height: 176.0±5.7cm; mass: 79.65±7.61kg) performed one session involving eight sets of the bench press exercise performed to momentary muscle failure with 2-min rest between sets...
June 7, 2017: Physiology & Behavior
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