Transport Across Membrane
Mostrando 1-12 de 777 artigos, teses e dissertações.
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1. Comparison of three PET methods to assess peritoneal membrane transport
The peritoneal equilibration test (PET) is the most widespread method for assessing water and solute transport across the peritoneal membrane. This study compared three methods: traditional PET (t-PET), mini-PET, and modified PET (mod-PET). Non-diabetic adults (n=21) who had been on peritoneal dialysis (PD) for at least three months underwent t-PET (glucose
Braz J Med Biol Res. Publicado em: 05/08/2019
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2. In vitro hypoglycemic effects of unripe and ripe fruits of Musa sapientum
ABSTRACT The present study was undertaken to verify the hypoglycemic potential of unripe and ripe fruit extracts of Musa sapientum by using various in-vitro techniques, namely glucose adsorption capacity, glucose diffusion, amylolysis kinetics and glucose transport across the yeast cells. The results revealed that the unripe and ripe fruit extracts of Musa s
Braz. J. Pharm. Sci.. Publicado em: 05/03/2018
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3. Selective Transport of Silver(I) Cation Across a Bulk Liquid Membrane Containing Bis-β-enamino Ester as Ion Carrier
Facilitated transport of silver(I) cation across a bulk liquid membrane by two synthesized ligands, bis-β-enamino ester (BBEE) and bis(benzoic acid) trioxaheptane (BBAT), as carriers dissolved in dichloromethane has been investigated. BBEE was used as a specific ion carrier for the transport of silver(I) ion. The influence of experimental parameters affecti
J. Braz. Chem. Soc.. Publicado em: 2017-01
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4. Analysis for the presence of determinants involved in the transport of mercury across bacterial membrane from polluted water bodies of India
Abstract Mercury, which is ubiquitous and recalcitrant to biodegradation processes, threatens human health by escaping to the environment via various natural and anthropogenic activities. Non-biodegradability of mercury pollutants has necessitated the development and implementation of economic alternatives with promising potential to remove metals from the e
Braz. J. Microbiol.. Publicado em: 2016-03
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5. Expression of Saccharomyces cerevisiae α-glucoside transporters under different growth conditions
Important biotechnological processes depend on the efficient fermentation by Saccharomyces cerevisiae yeasts of starch hydrolysates rich in maltose and maltotriose. The rate-limiting step for fermentation of these α-glucosides is the transport across the plasma membrane of the cells. In order to contribute to a better understanding of maltose and maltotrios
Braz. J. Chem. Eng.. Publicado em: 2014-03
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6. Proteção por L-carnitina ou piracetam contra a morte celular causada por sinvastatina em celulas tumorais e não tumorais / Protection by L-carnitine or piracetam against cell death caused by simvastatin in tumor and non tumorigenic cell lines
Statins are drugs widely used in the treatment of hypercholesterolemia. They are competitive inhibitors of 3-hydroxy 3-methylglutaryl coenzyme A (HMG-CoA) reductase preventing in this way, the synthesis of cholesterol. L-carnitine is synthesized from the essential aminoacids lysine and methionine in liver and kidney and plays na important role in the cell, w
Publicado em: 2010
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7. Physiological implications of the regulation of vacuolar H+-ATPase by chloride ions
Vacuolar H+-ATPase is a large multi-subunit protein that mediates ATP-driven vectorial H+ transport across the membranes. It is widely distributed and present in virtually all eukaryotic cells in intracellular membranes or in the plasma membrane of specialized cells. In subcellular organelles, ATPase is responsible for the acidification of the vesicular inte
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-02
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8. Highly selective transport of mercury(II) ion through a bulk liquid membrane
In this work carrier-facilitated transport of mercury(II) against its concentration gradient from aqueous 0.04 M hydrochloric acid solution across a liquid membrane containing isopropyl 2-[(isopropoxycarbothiolyl)disulfanyl]ethane thioate (IIDE) as the mobile carrier in chloroform has been investigated. Sodium thiocyanate solution (1.6 M) was the most effici
Química Nova. Publicado em: 2009
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9. Microarranjos de DNA para análise da expressão gênica em cepas de Trypanosoma cruzi suscetíveis e resistentes a benznidazol. / DNA microarray for gene expression analysis of Trypanosoma cruzi strains sensitive and resistant to benznidazole.
Benznidazol (BZ) é uma das duas drogas usadas no tratamento da doença de Chagas. Falhas terapêuticas são observadas em muitos pacientes, que foram atribuídas, principalmente, às diferenças na suscetibilidade de cepas do Trypanosoma cruzi a essa droga. Alguns genes foram implicados na resistência induzida a BZ, mas não na resistência natural. O obje
Publicado em: 2008
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10. Intestinal molecular physiology of Dysdercus peruvianus (Hemiptera) / Fisiologia molecular intestinal de Dysdercus Peruvianus (Hemiptera)
After identification of cathepsins L in vitro assays and in zimograms we began to purify this enzyme in insect midgut. The region V2 was selected as a source of material for purifying a cysteine proteinase because it contains most of the activity of that proteinase. After several attempts to purify this proteinase, an effective process was developed that avo
Publicado em: 2008
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11. Cl- and regulation of pH by MDCK-C11 cells
The interaction between H+ extrusion via H+-ATPase and Cl- conductance was studied in the C11 clone of MDCK cells, akin to the intercalated cells of the collecting duct. Cell pH (pHi) was measured by fluorescence microscopy using the fluorescein-derived probe BCECF-AM. Control recovery rate measured after a 20 mM NH4Cl acid pulse was 0.136 ± 0.008 pH units/
Brazilian Journal of Medical and Biological Research. Publicado em: 05/04/2007
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12. Mitochondria, calcium and pro-apoptotic proteins as mediators in cell death signaling
Cellular Ca2+ signals are crucial in the control of most physiological processes, cell injury and programmed cell death through the regulation of a number of Ca2+-dependent enzymes such as phospholipases, proteases, and nucleases. Mitochondria along with the endoplasmic reticulum play pivotal roles in regulating intracellular Ca2+ content. Mitochondria are e
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02