Navegação Ciências Biológicas por Título
Resultados 1142-1161 de 3051
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A exposição pré-natal ao álcool como fator de risco para comportamentos disfuncionais : o papel do pediatra
(2008) [Artigo de periódico]Objetivo: Ainda que as características clássicas da síndrome fetal alcoólica tenham sido descritas desde 1968, a pesquisa sobre a teratogênese do álcool apenas recentemente demonstrou que o cérebro é o órgão do corpo mais ... -
Expressão de neurotrofinas e de seus receptores no osteossarcoma primário
(2019) [Artigo de periódico]Objetivo: determinar a expressão de neurotrofinas e seus receptores tirosina quinases em pacientes com osteossarcoma (OS) e sua correlação com desfechos clínicos. Métodos: biópsias de tumores primários de pacientes com OS ... -
Expressão dos protooncogenes C-FOS, C-MYC e C-JUN em miométrio normal e mioma humanos
(2006) [Artigo de periódico]Objetivo: Comparar a expressão gênica (mRNA) e protéica dos protooncogenes c-fos, c-myc e c-jun em miométrio normal e mioma humanos. Métodos: Foi realizado um estudo do tipo caso-controle. O material foi coletado de 12 ... -
Expressão gênica das células do cumulus oophorus de bovinos após vitrificação
(2010) [Artigo de periódico]Um dos desafios da criobiologia continua sendo o desenvolvimento de um método que proporcione a manutenção da viabilidade após a criopreservação de oócitos imaturos na espécie bovina. A vitrificação tem sido a metodologia ... -
Expression of an osmotin-like protein from Solanum nigrum confers drought tolerance in transgenic soybean
(2014) [Artigo de periódico]Background: Drought is by far the most important environmental factor contributing to yield losses in crops, including soybeans [Glycine max (L.) Merr.]. To address this problem, a gene that encodes an osmotin-like protein ... -
Expression of matrix metalloproteinases in patients with bipolar disorder
(2013) [Artigo de periódico]Objective: High cardiovascular mortality rates have been reported in patients with bipolar disorder (BD). Studies indicate that matrix metalloproteinases (MMPs) are implicated in cardiovascular diseases. We evaluated the ... -
Expression of mdr isoforms in mice during estrous cycle and under hormone stimulation
(2006) [Artigo de periódico]The multidrug resistance (MDR) phenotype is associated with the expression of P-glycoprotein (Pgp), coded by the multigenic mdr family. Mice present the isoforms mdr1 and mdr3, which are responsible for multidrug resistance, ... -
Expression of the bacterial recA gene impairs genetic recombination and sporulation in a Saccharomyces cerevisae diploid strain
(2003) [Artigo de periódico]The Escherichia coli RecA protein (RecAp) has been demonstrated to induce mutagenesis in yeast cells, although there is still little information on the role of the RecAp in yeast recombination events. We evaluated spontaneous ... -
Expression of the disease on female carriers of X-linked lysosomal disorders : a brief review
(2010) [Artigo de periódico]Most lysosomal diseases (LD) are inherited as autosomal recessive traits, but two important conditions have X-linked inheritance: Fabry disease and Mucopolysaccharidosis II (MPS II). These two diseases show a very different ... -
Expression profiles of meiotic genes in male vs. female gonads and gametes : insights into fertility issues
(2023) [Artigo de periódico]Gametes are specialized cells that, at fertilization, give rise to a totipotent zygote capable of generating an entire organism. Female and male germ cells undergo meiosis to produce mature gametes; however, sex-specific ... -
Extension of the known range of the snapping shrimp Alpheus christofferseni Anker, Hurt and Knowlton, 2007 (Caridea: Alpheidae)
(2023) [Artigo de periódico]Alpheus christofferseni Anker, Hurt and Knowlton, 2007 was described based on four specimens from Atol das Rocas, northeastern Brazil, and one specimen from Bocas del Toro, the Caribbean coast of Panama. Here, we report ... -
External morphology of the immature stages of neotropical heliconians : VIII. Philaethria wernickei (Röber) (Lepidoptera, Nymphalidae, Heliconiinae)
(2010) [Artigo de periódico]Morfologia externa dos estágios imaturos de heliconíneos neotropicais: VIII. Philaethria wernickei (Röber) (Lepidoptera, Nymphalidae, Heliconiinae). As estruturas externas do ovo, larva e pupa de Philaethria wernickei ... -
External morphology of the immature stages of Neotropical heliconians: X. Heliconius sara apseudes (Lepidoptera, Nymphalidae, Heliconiinae)
(2015) [Artigo de periódico]The biology and morphology of the immature stages of Heliconius sara apseudes (Hübner, [1813]) are still little known. External features of the egg, larvae and pupa of H. sara apseudes are described and illustrated, based ... -
Extracellular HSP70 activates ERK1/2, NF-kB and pro-inflammatory gene transcription through binding with RAGE in A549 human lung cancer cells
(2017) [Artigo de periódico]Background/Aims: Heat shock protein 70 (HSP70) has been recently described with extracellular actions, where it is actively released in inflammatory conditions. Acting as DAMPs (damage associated molecular pattern) , ... -
Extracellular mycobacterial DnaK polarizes macrophages to the M2-like phenotype
(2014) [Artigo de periódico]Macrophages are myeloid cells that play an essential role in inflammation and host defense, regulating immune responses and maintaining tissue homeostasis. Depending on the microenvironment, macrophages can polarize to two ... -
Extracellular superoxide dismutase is necessary to maintain renal blood flow during sepsis development
(2017) [Artigo de periódico]Background: Extracellular superoxide dismutase (ECSOD) protects nitric oxide (NO) bioavailability by decreasing superoxide levels and preventing peroxynitrite generation, which is important in maintaining renal blood flow ... -
Extreme homogeneity among brazilian wheat genotypes determined by RAPD markers
(2000) [Artigo de periódico]Random amplified polymorphic DNA markers (RAPD) were used to estimate the variability of 14 genotypes of Brazilian wheat (Triticum aestivum L.), using a set of 50 random 10-mer primers. A total of 256 reproducibly scorable ... -
Extremely low nucleotide diversity among thirty-six new chloroplast genome sequences from Aldama (Heliantheae, Asteraceae) and comparative chloroplast genomics analyses with closely related genera
(2021) [Artigo de periódico]Aldama (Heliantheae, Asteraceae) is a diverse genus in the sunflower family. To date, nearly 200 Asteraceae chloroplast genomes have been sequenced, but the plastomes of Aldama remain undescribed. Plastomes in Asteraceae ... -
Facial asymmetry and genetic ancestry in Latin American admixed populations
(2015) [Artigo de periódico]Fluctuating and directional asymmetry are aspects of morphological variation widely used to infer environmental and genetic factors affecting facial phenotypes. However, the genetic basis and environmental determinants of ... -
Facial nerve hemangioma of the lateral portion of the internal acoustic canal : a case report and a review of literature
(2023) [Artigo de periódico]Introduction facial nerve hemangiomas (FNH) are rare tumors. Although it can occur in any portion of the nerve, it predominantly appears near the geniculate ganglion. We present a case of facial nerve hemangioma of an ...