Entry, dispersion and differentiation of microglia in the developing central nervous system.

abstract：:The in vitro metabolism of a widespread natural product, trachyloban-19-oic acid (1), by the fungal species Mucor plumbeus was studied in a sucrose-yeast liquid medium. Two products were isolated, and their structures were determined by spectroscopic means as 7β-hydroxytrachyloban-19-oic acid (5) and trachyloban-19-O-...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos GFD,Takahashi JA

更新日期：2017-01-01 00:00:00

abstract：:Cynodonts represent the transition from reptiles to mammals. They are classified as synapsids, or tetrapod animals with mammalian characteristics. We present here the finding of helminth eggs in a coprolite identified as of cynodont origin dated of nearly 240 million years. Microscopy revealed the presence of very wel...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva PA,Borba VH,Dutra JM,Leles D,da-Rosa AA,Ferreira LF,Araujo A

更新日期：2014-03-01 00:00:00

abstract：:The Jequiezinho River is a temporary river. In the urban stretch it is impacted, with perennial flow coming from domestic sewage and rainwater. This study evaluated the geochemical distribution and potential mobility of some metals (Pb, Co, Ca, Cr, Mg, Cu, Fe, Mn, Ni and Zn) in sediments of the Jequiezinho River. Sedi...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva DS,Cerqueira UMFM,Aguiar RM,Carneiro PLS,Bezerra MA

更新日期：2020-11-27 00:00:00

abstract：:The isolated chick retina provides an in vitro tissue model, in which two protocols were developed to verify the efficacy of a peptide in the excitability control of the central gray matter. In the first, extra-cellular potassium homeostasis is challenged at long intervals and in the second, a wave is trapped in a rin...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Lima VM,Piqueira JR,Hanke W

更新日期：2009-03-01 00:00:00

abstract：:In Patagonia, knowledge about the interaction among tephritids and the native flora is very scarce. In this study we identified for the first time two tephritid species (Cecidochares sp. and Neosphaeniscus m-nigrum) associated with the capitula of Chuquiraga avellanedae. This is the first record of a host plant for th...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Martinez FJ,Norrbom AL,Schliserman P,Campanella MV

更新日期：2020-10-12 00:00:00

abstract：:Properties of L(+) lactate dehydrogenase (LDH) of Electrophorus electricus (L.) electric organ were studied, comparing the substrates pyruvate and lactate. Electric organ LDH is a soluble enzyme with a pH optimum of 7.4 for pyruvate and 9.0 for lactate. The apparent Km was lower for pyruvate (Km = 2.5 X 10(-4) M) than...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Torres-da Matta J,Nery da Matta A,Hassón-Voloch A

更新日期：1976-01-01 00:00:00

abstract：:Investigation of hyperferritinemia in metabolic syndrome patients represents a diagnostic challenge, but it is essential for the identification of individuals with iron overload. Hepcidin negatively regulates iron absorption and release. An increase in hepcidin occurs when iron levels are sufficient or in inflammatory...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Rauber MR,Pilger DA,Cecconello DK,Falcetta FS,Marcondes NA,Faulhaber GAM

更新日期：2019-05-13 00:00:00

abstract：:Tissue engineering holds as a prominent technique to repair or replace the damaged human parts to recreate its native function. In this research, a novel scaffold based on polyurethane (PU) comprising megni oil was electrospun for tissue engineering applications. The obtained polyurethane blended with megni oil nanofi...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Jaganathan SK,Mani MP,Supriyanto E

更新日期：2019-06-19 00:00:00

abstract：:In some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated t...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva EA,Lôbo LT,Silva GA,Souza Filho AP,Da Silva MN,Arruda AC,Guilhon GM,Santos LS,Arruda MS

更新日期：2013-09-01 00:00:00

abstract：:The aim of this work was to investigate the phenolic content and antioxidant capacity of infusions of commercial herb samples (fennel, anise, peppermint, lemon grass and lemon balm) popularly consumed in Brazil. The infusion preparation for phenolic extraction was optimized using multivariate planning. Spectrophotomet...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos WNLD,MagalhÃes BEA

更新日期：2020-11-11 00:00:00

abstract：:A simple and reliable method for the measurement of sodium and potassium in blood serum without any sample dilution by using flow injection and atomic absorption spectrophotometry is described. A sample throughout of 100 measurements per hour is possible. Matrix problems have not been encountered. The coefficient of v...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Burguera JL,Burguera M,Gallignani M

更新日期：1983-06-01 00:00:00

abstract：:Annulated thienopyrimidine derivatives attracted big interest of the scientific community due to their broad spectrum of biological activities among which are the inhibition of phosphodiesterase, antiproliferative and antimicrobial activities. As a continuation of our studies on the synthesis and biological activity o...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Sirakanyan SN,Geronikaki A,Spinelli D,Hakobyan EK,Kartsev VG,Petrou A,Hovakimyan AA

更新日期：2018-04-23 00:00:00

abstract：:Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21)...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fornazier MJ,Martins DS,Willink MCG,Pirovani VD,Ferreira PSF,Zanuncio JC

更新日期：2017-10-01 00:00:00

abstract：:The characteristic of immersion, involvement and motivation have made serious games an important tool to be used in the medical field. However, there are people that, having some sort of physical disability, are not able to, or do not feel motivated to play. This work presents a strategy to support human- computer int...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Fernandes FG,Cardoso A,Lopes RA

更新日期：2020-02-17 00:00:00

abstract：:In the present work, the ester synthesis in organic media catalyzed by lipases immobilized on chrysotile was studied. Lipases of different sources (Mucor javanicus, Pseudomonas cepacia, Rhizopus oryzae, Aspergillus niger and Candida rugosa) were immobilized on chrysotile, an inexpensive magnesium silicate, and used fo...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Silva JE,Jesus PC

更新日期：2003-06-01 00:00:00

abstract：:This work describes the chemical composition and antimicrobial activity of the volatile oils of Ocimum canum and Ocimum selloi, both occurring in Jequié/BA, northeastern Brazil. The plants were collected in the winter/2005 and summer/2006, the oils extracted by steam distillation and further analyzed by GC-MS. A total...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Nascimento JC,Barbosa LC,Paula VF,David JM,Fontana R,Silva LA,França RS

更新日期：2011-09-01 00:00:00

abstract：:1) The presence of histamine in prickles and lead and stem tissues of Cnidosculus oligandrus (Mull. Arg) Pax & Hoffm (Euphorbiaceae) is reported. 2) Prickles on stems and leaves have larger amounts of histamine, as determined by the isolated guinea-pig ileum and by fluorimetry of the condensation product of the histam...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Cordeior RS,Aragão JB,Morhy L

更新日期：1983-01-01 00:00:00

abstract：:Some membrane characteristics of the isolated electrocyte of the Sachs organ are presented as function of temperature. Excitability curves are shown for electrocytes kept in standard saline at different temperatures. It is shown that rheobase varies directly with temperature. Apparently membrane resistance varies from...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Esquibel MA,Negreiros J,Gawryszewski LG

更新日期：1980-09-01 00:00:00

abstract：:The present study describes Tereancistrum flabellum n. sp. (Dactylogyridae, Ancyrocephalinae) from the gills of the anostomid fishes Leporinus friderici, Leporinus amblyrhynchus and Leporinus elongatus from two freshwater ecosystems in the south east of Brazil. This new species is mainly characterized by the morpholog...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Zago AC,Yamada FH,Franceschini L,Bongiovani MF,Yamada POF,Silva RJD

更新日期：2017-04-01 00:00:00

abstract：:Coronary artery calcification is an early marker of subclinical atherosclerosis, but little research has been done in asymptomatic individuals under 45 years. In this cohort study with 17 years of follow-up, 155 participants were assessed in 2016 with a coronary calcium score for the association with cardiovascular ri...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Poletto S,Schvartzman PR,Bruscato NM,Moriguchi E

更新日期：2018-09-01 00:00:00

abstract：:The acceleration of the anthropogenic activity has increased the atmospheric carbon concentration, which causes changes in regional climate. The Gross Primary Production (GPP) is an important variable in the global carbon cycle studies, since it defines the atmospheric carbon extraction rate from terrestrial ecosystem...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Danelichen VH,Biudes MS,Velasque MC,Machado NG,Gomes RS,Vourlitis GL,Nogueira JS

更新日期：2015-09-01 00:00:00

abstract：:Sugarcane crop conventional tillage has been replaced by deep soil preparation with few studies about its effect on soil quality and sustainability. The aim of this study was to assess structural volumes ina dystrophic Red-Yellow Latosol subjected to conventional tillage (CT) and deep localized soil tillage (DLST) to ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Garcia DM,Silva CG,Lansa VR,Nery EM,Silva NS,Alberton O,Colauto NB,Silva APD

更新日期：2020-01-01 00:00:00

abstract：:During composting processes, the degradation of organic waste is accomplished and driven by a succession of microbial populations exhibiting a broad range of functional competencies. A total of 183 bacteria, isolated from a composting process, were evaluated for cellulase activity at different temperatures (37, 50, 60...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Marco ÉG,Heck K,Martos ET,VAN DER Sand ST

更新日期：2017-01-01 00:00:00

abstract：:Penguins identify their mate or chick by an acoustic signal, the display call. This identification is realized in a particularly constraining environment: the noisy world of a colony of thousands of birds. To fully understand how birds solve this problem of communication, we have done observations, acoustic analysis, ...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Aubin T

更新日期：2004-06-01 00:00:00

abstract：:Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproli...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Santos TLAD,Queiroz RF,Sawaya ACHF,Lopez BG,Soares MBP,Bezerra DP,Rodrigues ACBC,Paula VF,Waldschmidt AM

更新日期：2017-01-01 00:00:00

abstract：:Experiments in this paper demonstrate that mitochondrial damage associated to NAD(P)+-induced Ca2+ efflux, is the consequence of inappropriate reaction conditions. The major findings are (i) Added oxaloacetate and acetoacetate readily oxidize NAD(P)H in intact rat liver mitochondria without causing swelling or membran...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Vercesi AE

更新日期：1985-09-01 00:00:00

abstract：:The risk of developing cardiovascular disease (CVD) is related to lifestyle (e.g. diet, physical activity and smoking) as well as to genetic factors. This study aimed at evaluating the association between CVD risk factors and DNA damage levels in children and adolescents. Anthropometry, diet and serum CVD risk factors...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Kliemann M,Prá D,Müller LL,Hermes L,Horta JA,Reckziegel MB,Burgos MS,Maluf SW,Franke SI,Silva Jd

更新日期：2012-09-01 00:00:00

abstract：:The study of radiation entrance and exit dynamics and energy consumption in a system is important for understanding the environmental processes that rule the biosphere-atmosphere interactions of all ecosystems. This study provides an analysis of the interaction of energy in the form of photosynthetically active radiat...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Curado LF,Musis CR,Cunha CR,Rodrigues TR,Pereira VM,Nogueira JS,Sanches L

更新日期：2016-09-01 00:00:00

abstract：:We investigated the influence of environmental factors in spatial and temporal distribution of the seabob shrimp Xiphopenaeus kroyeri in Santos Bay and São Vicente Estuary, state of São Paulo, Brazil. Monthly samples were obtained, from May 2008 through April 2010, from four locations in the estuary and four in the ba...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Heckler GS,Lopes M,Simões SM,Shimizu RM,Costa RC

更新日期：2014-09-01 00:00:00

abstract：:One of the most important steps is to clarify the juice, which are added synthetic polymer acrylamide base, aiming the fast settling of impurities present in the juice. However, this input is expensive and may have carcinogenic and neurotoxic actions to humans. The search for new natural flocculants that have similari...

journal_title：Anais da Academia Brasileira de Ciencias

authors： Freita CM,Freita LA,Tralli LF,Silva AF,Mendes FQ,Teixeira V,Mutton MJR

更新日期：2017-10-01 00:00:00