| pubmed-article:8611181 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8611181 | lifeskim:mentions | umls-concept:C0007600 | lld:lifeskim |
| pubmed-article:8611181 | lifeskim:mentions | umls-concept:C0017638 | lld:lifeskim |
| pubmed-article:8611181 | lifeskim:mentions | umls-concept:C0178719 | lld:lifeskim |
| pubmed-article:8611181 | lifeskim:mentions | umls-concept:C0019472 | lld:lifeskim |
| pubmed-article:8611181 | lifeskim:mentions | umls-concept:C1704711 | lld:lifeskim |
| pubmed-article:8611181 | pubmed:dateCreated | 1996-5-24 | lld:pubmed |
| pubmed-article:8611181 | pubmed:abstractText | Hexokinase plays a key role in regulating cell energy metabolism. Hexokinase is mainly particulate, bound to the mitochondrial outer membrane in brain and tumour cells. We hypothesized that the intracellular pH (pH1) controls the intracellular distribution of hexokinase. Using the SNB-19 glioma cell line, pH1 variations were imposed by incubating cells in a high-K+ medium at different pH values containing specific ionophores (nigericin and valinomycin), without affecting cell viability. Subcellular fractions of cell homogenates were analysed for hexokinase activity. Imposed pH1 changes were verified microspectrofluorimetrically by using the pH1-sensitive probe SNARF-1-AM (seminaphtho-rhodafluor-1-acetoxymethyl ester). Imposition of an acidic pH1 for 30 min strongly decreased the particulate/total hexokinase ratio, from 63% in the control sample to 31%. Conversely, when a basic pH1, was imposed, the particulate/total hexokinase ratio increased to 80%. The glycolytic parameters, namely lactate/pyruvate ratio, glucose 6-phosphate and ATP levels, were measured concomitantly. Lactate/pyruvate ratio and ATP level were both markedly decreased by acidic pH1 and increased by basic pH1. Conversely, the glucose 6-phosphate level was increased by acidic pH1 and decreased by basic pH1. To demonstrate that the change of hexokinase distribution was not due to altered metabolite levels of glycolysis, a pH1 was imposed for a 5 min incubation time. Modification of the hexokinase distribution was similar to that noted after a 30 min incubation, whereas metabolite levels of glycolysis were not affected. These results provide evidence that the intracellular distribution of hexokinase is highly sensitive to variations of the pH1, and regulates hexokinase activity. | lld:pubmed |
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| pubmed-article:8611181 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8611181 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8611181 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:8611181 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8611181 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8611181 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8611181 | pubmed:month | Feb | lld:pubmed |
| pubmed-article:8611181 | pubmed:issn | 0264-6021 | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:DutrillauxBB | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:PouponM FMF | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:MiccoliLL | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:OudardSS | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:SureauFF | lld:pubmed |
| pubmed-article:8611181 | pubmed:author | pubmed-author:PoirsonFF | lld:pubmed |
| pubmed-article:8611181 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8611181 | pubmed:day | 1 | lld:pubmed |
| pubmed-article:8611181 | pubmed:volume | 313 ( Pt 3) | lld:pubmed |
| pubmed-article:8611181 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8611181 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8611181 | pubmed:pagination | 957-62 | lld:pubmed |
| pubmed-article:8611181 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
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| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:meshHeading | pubmed-meshheading:8611181-... | lld:pubmed |
| pubmed-article:8611181 | pubmed:year | 1996 | lld:pubmed |
| pubmed-article:8611181 | pubmed:articleTitle | Intracellular pH governs the subcellular distribution of hexokinase in a glioma cell line. | lld:pubmed |
| pubmed-article:8611181 | pubmed:affiliation | Laboratoire de Cytogénétique Moléculaire et Oncologie (UMR 147), CNRS-Institut Curie, Paris, France. | lld:pubmed |
| pubmed-article:8611181 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:8611181 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
