Publicações - ciências biológicas
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Almeida, LM.;
I. M. M. LIMA
Revista Brasileira de Zoologia,
v. 12,
p. 701-718,
1995
Palavra-chave:
Exoplectrinae;
morfologia;
Oryssomus;
Revisão
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes
resumo ...
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Carlos Eduardo Pilleggi de Souza;
Carlos Fernando Andrade;
Luciana Urbano Santos;
Alváro braga souza
Revista de Patologia Tropical,
v. 23,
p. 151-158,
1995
Palavra-chave:
Bacillus thuringhiensis (H-14);
cemetery;
mosquito control
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia
resumo ...
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Ricardo Fernandez Perez;
Gerhard malnic
Palavra-chave:
bicarbonate secretion;
distal tubule;
microperfusion
Áreas do conhecimento:
Ciências Biológicas; Fisiologia; Fisiologia de Órgãos e Sistemas; Fisiologia Renal
resumo ...
Secretion of bicarbonate has been described for distal nephron epithelium and attributed to apical Cl−/HCO
3
−
exchange in beta-intercalated cells. We investigated the presence of this mechanism in cortical distal tubules by perfusing these segments with acid (pH 6) 10 mm phosphate Ringer. The kinetics of luminal alkalinization was studied in stationary microperfusion experiments by double-barreled pH (ion-exchange resin)/1 m KCl reference microelectrodes. Luminal alkalinization may be due to influx (into the lumen) of HCO
3
−
or OH−, or efflux of H+. The magnitude of the Cl−/ HCO
3
−
exchange component was measured by perfusing the lumen with solutions with or without chloride, which was substituted by gluconate. This component was not different from zero in control and alkalotic (chronic plus acute) Wistar rats. Homozygous Brattleboro rats (BRB), genetically devoid of antidiuretic hormone, were used since this hormone has been shown to stimulate H+ secretion, which could mask bicarbonate secretion. In these rats, no evidence for Cl−/HCO
3
−
exchange was found in control BRB and in early distal segments of alkalotic animals, but in late distal tubule a significant component of 0.14±0.033 nmol/cm2 · sec was observed, which, however, is small when compared to the reabsorptive flow found in control Wistar rats, of 0.95±0.10 nmol/cm2 · sec. In addition, 5×10−4
m SITS had no effect on distal bicarbonate reabsorption in controls as well as on secretion in alkalotic Wistar and Brattleboro rats, which is compatible with the absence of effect of this drug on the apical Cl−/HCO
3
−
exchange in other tissues. It is concluded that most distal alkalinization is not Cl− dependent, and that Cl−/HCO
3
−
exchange may be found in cortical distal tubule, but its magnitude is, even in alkalosis, markedly smaller than the reabsorptive flux, which predominates in the rats studied in this paper, keeping luminal pH lower than that of blood.
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Vanessa Kava-Cordeiro;
Elza Áurea de Luna-Alves-Lima;
J L Azevedo
Palavra-chave:
Metarhizium anisopliae;
entomopathogenic fungus;
mutagenic agents
Áreas do conhecimento:
Ciências Biológicas; Genética Molecular e de Microorganismos; Genética Clássica de Fungos
resumo ...
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Iván Izquierdo;
Fin, C;
DA CUNHA, CLAUDIO;
Jorge H Medina
Ciência e Cultura (SBPC),
v. 47,
p. 252-256,
1995
Palavra-chave:
learning;
long-term potentiation;
retrograde messenger;
Co;
Nó;
PAF
resumo ...
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Rosana Moreira da Rocha;
F. MONNIOT
Revista Brasileira de Biologia (Impresso) (Cessou em 2001. Cont. ISSN 1519-6984 Brazilian Journal of Biology (Impresso)),
v. 55,
p. 639-649,
1995
Palavra-chave:
ASCIDIACEA;
DIDEMNIDAE;
SUDESTE BRASILEIRO
Áreas do conhecimento:
Ciências Biológicas; Zoologia; Taxonomia dos Grupos Recentes
resumo ...
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Marco A P Brotto;
Chaves-Moreira, Daniele;
Tony Creazzo;
Robert E Godt;
Thomas M Nosek
Journal of Muscle Research and Cell Motility,
v. 16,
p. 1-10,
1995
Palavra-chave:
BDM;
heart;
chick;
23 Butanedione Monoxime;
excitation-contraction coupling
Áreas do conhecimento:
Ciências Biológicas; Bioquímica dos Microorganismos; Enzimologia
resumo ...
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Penjit Sangsurasak;
MITCHELL, DAVID ALEXANDER
Palavra-chave:
Fermentação em estado sólido;
Biorreator leito fixo;
Modelagem mathematica;
transferência de calor
Áreas do conhecimento:
Engenharias; Engenharia Química; Processos Industriais de Engenharia Química; Processos Bioquímicos;
Engenharias; Engenharia Mecânica; Fenômenos de Transporte; Transferência de Calor;
Ciências Biológicas; Microbiologia; Biologia e Fisiologia dos Microorganismos; Virologia
resumo ...
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Hidevaldo Bueno Machado;
Marshal Geoffrey Yates;
Shigehiro Funayama;
RIGO, L;
STEFFENS, M;
Emanuel Maltempi de Souza;
Fábio de Oliveira Pedrosa
Canadian Journal of Microbiology (Print),
v. 41,
p. 674-684,
1995
Palavra-chave:
Azospirillum;
fixação de nitrogênio;
ntrB-ntrC
Áreas do conhecimento:
Ciências Biológicas; Biologia Molecular;
Ciências Biológicas; Bioquímica; Bioquímica dos Microorganismos
resumo ...
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Hidevaldo Bueno Machado;
M. G. Yates;
Sugiro Funayama;
RIGO, L;
STEFFENS, M;
Emanuel Maltempi de Souza;
Fábio de Oliveira Pedrosa
Canadian Journal of Microbiology,
v. 41,
p. 674-685,
1995
Áreas do conhecimento:
Ciências Biológicas; Biologia Molecular
resumo ...
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