Epigenesis
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Epigénesis y preformacionismo: radiografía de una antinomía inconclusa
ABSTRACTThe process of development of the embryo has inspired philosophical speculation since the advent of Western thought. Since the time of Aristotle two antithetical conceptual models have traditionally been used to understand embryogenesis: either form or structure is preformed in the embryo or it is newly formed with each generation. Our aim in this ar
Sci. stud.. Publicado em: 2015-09
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2. Territórios heterocromáticos em Triatoma infestans Klug e Panstrongylus megistus (Burmeister) : composição, identificação de marcadores epigenéticos e resposta a inibidores de deacetilases de histonas / Heterochromatic territories in Triatoma infestans Klug and Panstrongylus megistus (Burmeister) : composition, identification of epigenetic markers and response to histone deacetylase inhibitors
A cromatina pode existir em núcleos interfásicos em dois estados distintos: como eucromatina e como heterocromatina, podendo ser esta constitutiva ou facultativa. Em células somáticas do final da fase ninfal dos hemípteros reduviídeos Triatoma infestans e Panstrongylus megistus há núcleos grandes, poliploides, nos quais a heterocromatina apresenta-se
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
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3. Relationship between birth weight and infant growth in the first year of life and risk factors to cardiovascular diseases of adults followed at Health Center School Prof. Samuel B. Pessoa from Butantã neighborhood, São Paulo, born between 1977 and 1989 / Relação entre peso de nascimento e ganho pondoestatural no primeiro ano de vida e fatores de risco para a doença cardiovascular em adultos nascidos entre 1977 e 1989 acompanhados no Centro de Saúde-Escola "Prof. Samuel B. Pessoa" do Butantã, cidade de São Paulo
A ocorrência de doença cardiovascular não pode ser explicada somente pelo estilo de vida do adulto. Estudos ecológicos e epidemiológicos dos últimos vinte anos demonstraram maior incidência de doenças crônicas não transmissíveis em indivíduos que nasceram com baixo peso e tiveram um ganho de peso inadequado nos dois primeiros anos de vida. A hip�
Publicado em: 2010
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4. Os Processos heterocrônicos nos vertebrados : o exemplo dos Rhynchosauria (Reptilia, Archosauromorpha) do estado do rio Grande do Sul, Brasil
Aspectos heterocrônicos encontrados na evolução do crânio dos Rhynchosauria foram estudados como uma contribuição ao melhor entendimento da evolução deste grupo, bem como dos vertebrados em geral; para o que partiu-se do material Triássico do estado Rio Grande do Sul. A Análise dos Componentes Principais incluiu 22 crânios e foi utilizada para est
Publicado em: 2009
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5. Chromatin supraorganization and extensibility, and nuclear composition in mouse cells / Supraorganização e extensibilidade da cromatina, e composição nuclear em celulas de camundongo
Aging may be defined as the changes that take place in an organism with time. This process, in biology, is called senescence. Cellular senescence is observed in isolated cells, and has been studied typically in cultured cells, but its occurrence in vivo has been shown only in some mammalian tissues. Chromatin changes that take place with cellular senescence
Publicado em: 2008
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6. Translation of epigenetic rules of individual behavior into ethnographic patterns
The pivotal process in gene-culture coevolution is envisaged to be the evolution of behavioral epigenesis. From premises based on the known properties of enculturation and usage diffusion within societies, a probabilistic model is constructed to estimate the degree to which rules governing individual development canalize ethnographic curves (the probability
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7. Cellular epigenetics: effects of passage history on competence of cells for "spontaneous" transformation.
"Spontaneous" neoplastic transformation of cells in culture has been shown to be an adaptive response to moderate physiological constraints such as contact inhibition and lowered concentrations of serum. These are the same constraints that promote normal differentiation of a variety of cell types. Because both normal and neoplastic development represent endu
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8. A Theory of the Epigenesis of Neuronal Networks by Selective Stabilization of Synapses
A formalism is introduced to represent the connective organization of an evolving neuronal network and the effects of environment on this organization by stabilization or degeneration of labile synapses associated with functioning. Learning, or the acquisition of an associative property, is related to a characteristic variability of the connective organizati
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9. Structure and function of the N-terminal 40 kDa fragment of human PMS2: a monomeric GHL ATPase
Human MutLα, a heterodimer of hMLH1 and hPMS2, is essential for DNA mismatch repair. Inactivation of the hmlh1 or hpms2 genes by mutation or epigenesis causes genomic instability and a predisposition to hereditary non-polyposis cancer. We report here the X-ray crystal structures of the conserved N-terminal 40 kDa fragment of hPMS2, NhPMS2, and its complexe
Oxford University Press.
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10. Noradrenaline and functional plasticity in kitten visual cortex: a re-examination.
A quantitative re-examination was made of the influence of noradrenergic depletion on the epigenesis of kitten visual cortex. Two methods were used to deplete noradrenaline at the cortical level: stereotaxically controlled injection of 6-hydroxydopamine (6-OHDA) in the coeruleus complex, from which the noradrenergic input to visual cortex arises; intraventri