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	Provedor de dados Anais da ABC (AABC) (2) BJMBR (2) ArchiMer (1) Electron. J. Biotechnol. (1) Autor Arce-Johnson,Patricio (1) Cabrera,Soledad (1) Costa,Rita H. (1) Creydt,V. Pistone (1) Ferreira,Clélia (1) Ibarra,C. (1) Liu, Kk (1) Loyola,Rodrigo (1) Martín,F. (1) Matus,José Tomás (1) Mesquita,Oscar N. (1) Miyakawa,M. Fernandez (1) Rocha,Márcio S. (1) Serrano,Carolina (1) Silberstein,C. (1) Terra,Walter R. (1) Vega,Andrea (1) Zotta,E. (1) Mais... Palavra-chave Water transport (6) Angiotensin II (1) Angiotensin antagonists (1) B subunit (1) Berry shrinkage (1) Box model (1) Candidatus phytoplasma mali (1) Cell motility (1) Defocusing microscopy (1) Diarrhea (1) East China Sea (1) Hemolytic-uremic syndrome (1) Hydroelectrolyte balance (1) Ion transport (1) Kidney (1) Kuroshio (1) Late ripening (1) Macrophages (1) Mer de Chine orientale (1) Microvillar membranes (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Info:eu-repo/semantics/other (1) Journal article (1) Text (1) Ano 2008 (1) 2007 (1) 2006 (1) 2004 (1) 1998 (1) 1997 (1) Mais... País Brazil (4) Chile (1) France (1) Idioma Inglês (6)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Phytoplasma and virus detection in commercial plantings of Vitis vinifera cv. Merlot exhibiting premature berry dehydration Electron. J. Biotechnol. Matus,José Tomás; Vega,Andrea; Loyola,Rodrigo; Serrano,Carolina; Cabrera,Soledad; Arce-Johnson,Patricio. A new and devastating physiological disorder of Vitis vinifera cv. Merlot was recently reported, known as premature berry dehydration (PBD), which is characterized by plant growth reduction, induction of general senescence and pedicel necrosis in the fruit, causing significant reductions in vineyard production. The causes of this disease remain unclear and previous reports suggest that it may be associated with phloem disruption and water provision. For this reason, any factor causing phloem disturbances could cause an important change in the berry water status. As some micro-organisms have been reported to disrupt phloem flow, we analyzed the occurrence of phytoplasma and viruses in commercial vineyards presenting PBD. In this study, a phytoplasma was... Tipo: Journal article Palavras-chave: Berry shrinkage; Candidatus phytoplasma mali; Late ripening; Over ripened; Pedicel necrosis; Phloem; Water transport. Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500007 Comments on "the Kuroshio intermediate water is the major source of nutrients on the East China Sea continental shelf" by Chen (1996) ArchiMer Liu, Kk. Chen estimated (Oceanol. Acta 19, 1996) the influxes of water and nutrients from the Kuroshio to the East China Sea shelf separately for the wet and dry periods within a year, based on a steady-state box model: This approach is demonstrated to be flawed in terms of both mathematical rigor and observational evidence. A time-dependent term must be included in the model calculation, if intra-annual variation is to be determined. Tipo: Text Palavras-chave: Mer de Chine orientale; Kuroshio; Modèle en boîte; Transport d'eau; État non stationnaire; East China Sea; Kuroshio; Box model; Water transport; Non-steady state. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43653/43221.pdf Plasma membranes from insect midgut cells Anais da ABC (AABC) Terra,Walter R.; Costa,Rita H.; Ferreira,Clélia. Plasma membranes from insect midgut cells are separated into apical and basolateral domains. The apical domain is usually modified into microvilli with a molecular structure similar to other animals. Nevertheless, the microvillar structure should differ in some insects to permit the traffic inside them of secretory vesicles that may budd laterally or pinch-off from the tips of microvilli. Other microvillar modifications are associated with proton-pumping or with the interplay with an ensheathing lipid membrane (the perimicrovilllar membrane) observed in the midgut cells of hemipterans (aphids and bugs). The perimicrovillar membranes are thought to be involved in amino acid absorption from diluted diets. The microvillar and perimicrovillar membranes have... Tipo: Info:eu-repo/semantics/article Palavras-chave: Microvillar membranes; Perimicrovillar membranes; Nutrient absorption; Ion transport; Water transport; Midgut molecular physiology. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000200007 New tools to study biophysical properties of single molecules and single cells Anais da ABC (AABC) Rocha,Márcio S.; Mesquita,Oscar N.. We present a review on two new tools to study biophysical properties of single molecules and single cells. A laser incident through a high numerical aperture microscope objective can trap small dielectric particles near the focus. This arrangement is named optical tweezers. This technique has the advantage to permit manipulation of a single individual object. We use optical tweezers to measure the entropic elasticity of a single DNA molecule and its interaction with the drug Psoralen. Optical tweezers are also used to hold a kidney cell MDCK away from the substrate to allow precise volume measurements of this single cell during an osmotic shock. This procedure allows us to obtain information about membrane water permeability and regulatory volume increase.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Optical tweezers; Defocusing microscopy; Single molecules; Macrophages; Water transport; Cell motility. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100003 The Shiga toxin 2 B subunit inhibits net fluid absorption in human colon and elicits fluid accumulation in rat colon loops BJMBR Creydt,V. Pistone; Miyakawa,M. Fernandez; Martín,F.; Zotta,E.; Silberstein,C.; Ibarra,C.. Shiga toxin (Stx)-producing Escherichia coli (STEC) colonizes the large intestine causing a spectrum of disorders, including watery diarrhea, bloody diarrhea (hemorrhagic colitis), and hemolytic-uremic syndrome. It is estimated that hemolytic-uremic syndrome is the most common cause of acute renal failure in infants in Argentina. Stx is a multimeric toxin composed of one A subunit and five B subunits. In this study we demonstrate that the Stx2 B subunit inhibits the water absorption (Jw) across the human and rat colonic mucosa without altering the electrical parameters measured as transepithelial potential difference and short circuit current. The time-course Jw inhibition by 400 ng/ml purified Stx2 B subunit was similar to that obtained using 12 ng/ml... Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemolytic-uremic syndrome; Diarrhea; Shiga toxin 2; B subunit; Water transport. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600004 Renal actions of angiotensin-(1-7) BJMBR The heptapeptide angiotensin-(1-7) is considered to be a biologically active endproduct of the renin-angiotensin system. This angiotensin, which is devoid of the most known actions of angiotensin II such as induction of drinking behavior and vasoconstriction, has several selective effects in the brain and periphery. In the present article we briefly review recent evidence for a physiological role of angiotensin-(1-7) in the control of hydroelectrolyte balance Tipo: Info:eu-repo/semantics/other Palavras-chave: Angiotensin antagonists; Angiotensin II; Hydroelectrolyte balance; Renin-angiotensin system; Kidney; Water transport. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000400012 Registros recuperados: 6 Primeira ... 1 ... Última

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