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	Provedor de dados BJMBR (2) Biol. Res. (1) Autor Franca,J.G. (1) Graminha,M.A.S. (1) ITURRIAGA,RODRIGO (1) Nobrega,F.G. (1) Nobrega,M.P. (1) Picanço-Diniz,C.W. (1) Quaresma,J.A.S. (1) Silva,A.L.C. (1) Troitskaya,E.N. (1) do-Nascimento,J.L.M. (1) Mais... Palavra-chave Cytochrome oxidase (3) Carotid body (1) Chemoreceptor (1) Gene cloning (1) Gene disruption (1) Hypoxia (1) NADPH-diaphorase (1) Neocortex (1) Nitric oxide (1) Nitric oxide synthase (1) Oxidative phosphorylation (1) Primates (1) Saccharomyces cerevisiae (1) Subunit VII (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Journal article (1) Ano 2001 (1) 1998 (1) 1997 (1) País Brazil (2) Chile (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Nitric oxide and carotid body chemoreception Biol. Res. ITURRIAGA,RODRIGO. Nitric oxide (NO) has been proposed as an inhibitory modulator of carotid body chemosensory responses to hypoxia. It is believed that NO modulates carotid chemoreception by several mechanisms, which include the control of carotid body vascular tone and oxygen delivery and reduction of the excitability of chemoreceptor cells and petrosal sensory neurons. In addition to the well-known inhibitory effect, we found that NO has a dual (dose-dependent) effect on carotid chemoreception depending on the oxygen pressure level. During hypoxia, NO is primarily an inhibitory modulator of carotid chemoreception, while in normoxia NO increased the chemosensory activity. This excitatory effect produced by NO is likely mediated by an impairment of mitochondrial electron... Tipo: Journal article Palavras-chave: Carotid body; Chemoreceptor; Cytochrome oxidase; Hypoxia; Nitric oxide; Oxidative phosphorylation. Ano: 2001 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602001000200019 Study of a region on yeast chromosome XIII that complements pet G199 mutants (COX7) and carries a new non-essential gene BJMBR Nobrega,M.P.; Graminha,M.A.S.; Troitskaya,E.N.; Nobrega,F.G.. The mutants of Saccharomyces cerevisiae assigned to complementation group G199 are deficient in mitochondrial respiration and lack a functional cytochrome oxidase complex. Recombinant plasmids capable of restoring respiration were cloned by transformation of mutants of this group with a yeast genomic library. Sequencing indicated that a 2.1-kb subclone encompasses the very end (last 11 amino acids) of the PET111 gene, the COX7 gene and a new gene (YMR255W) of unknown function that potentially codes for a polypeptide of 188 amino acids (about 21.5 kDa) without significant homology to any known protein. We have shown that the respiratory defect corresponding to group G199 is complemented by plasmids carrying only the COX7 gene. The gene YMR255W was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharomyces cerevisiae; Gene cloning; Cytochrome oxidase; Subunit VII; Gene disruption. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000300004 NADPH-diaphorase activity in area 17 of the squirrel monkey visual cortex: neuropil pattern, cell morphology and laminar distribution BJMBR Franca,J.G.; do-Nascimento,J.L.M.; Picanço-Diniz,C.W.; Quaresma,J.A.S.; Silva,A.L.C.. We studied the distribution of NADPH-diaphorase activity in the visual cortex of normal adult New World monkeys (Saimiri sciureus) using the malic enzyme "indirect" method. NADPH-diaphorase neuropil activity had a heterogeneous distribution. In coronal sections, it had a clear laminar pattern that was coincident with Nissl-stained layers. In tangential sections, we observed blobs in supragranular layers of V1 and stripes throughout the entire V2. We quantified and compared the tangential distribution of NADPH-diaphorase and cytochrome oxidase blobs in adjacent sections of the supragranular layers of V1. Although their spatial distributions were rather similar, the two enzymes did not always overlap. The histochemical reaction also revealed two different... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitric oxide synthase; Neocortex; NADPH-diaphorase; Cytochrome oxidase; Primates. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900008 Registros recuperados: 3 Primeira ... 1 ... Última

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