Glycogen metabolism and glucose transport in experimental porphyria
Hexachlorobenzene (HCB) is a fungicide of well-known porphyrinogenic ability, which induces an experimental porphyria that resembles human porphyria cutanea tarda (PCT) in several animal species. It has been demonstrated that high glucose ingestion prevents porphyria development, and high-fat/ high-...
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2004
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v197_n2_p164_Taira http://hdl.handle.net/20.500.12110/paper_0300483X_v197_n2_p164_Taira |
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paper:paper_0300483X_v197_n2_p164_Taira2023-06-08T15:27:15Z Glycogen metabolism and glucose transport in experimental porphyria 2-allyl-2-isopropyl-acetamide 5-aminolevulinate synthase AIA ALA-S DMEM Dulbecco's modified Eagle's medium G-6-Pase Glucose-6-phosphatase HCB Hexachlorobenzene Lactic dehydrogenase LDH PC PCT PEPCK Porphyria cutanea tarda Pyruvate carboxylase carbohydrate corn oil fungicide glucose glycogen glycogen synthase hexachlorobenzene animal experiment article body weight controlled study disorders of porphyrin and heme metabolism dissolution enzyme activity enzyme phosphorylation experiment female gluconeogenesis glucose transport glycogen analysis glycogen metabolism glycogen synthesis intoxication liver nonhuman priority journal rat Animalia Ciconiiformes Zea mays Hexachlorobenzene (HCB) is a fungicide of well-known porphyrinogenic ability, which induces an experimental porphyria that resembles human porphyria cutanea tarda (PCT) in several animal species. It has been demonstrated that high glucose ingestion prevents porphyria development, and high-fat/ high-protein diets enhance HCB porphyrinogenic ability. On the contrary, a diet rich in carbohydrates reduces HCB effects. The aim of this work was to study HCB effects on glycogen synthesis and degradation, as well as on glucose synthesis and transport, in order to elucidate whether would justify the beneficial use of carbohydrates in this porphyria. Rats were treated with HCB dissolved in corn oil (five daily doses 100mg/kg body weight). Results showed that: (1) HCB caused an increase in glycogen content; (2) glycogen synthase activity increased three times, and phosphorylase activity decreased about 40% due to fungicide intoxication. The effect of HCB on these two activities accounted for the higher glycogen content observed in treated animals; (3) three gluconeogenic enzymes were reduced 30-50%; (4) glucose uptake in the liver decreased in all weeks studied. The alterations found in glucose synthesis, its uptake in liver and other tissues, and its release from glycogen might contribute to the biochemical porphyria picture and would account for the effect of glucose above mentioned. © 2004 Elsevier Ireland Ltd. All rights reserved. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v197_n2_p164_Taira http://hdl.handle.net/20.500.12110/paper_0300483X_v197_n2_p164_Taira |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
2-allyl-2-isopropyl-acetamide 5-aminolevulinate synthase AIA ALA-S DMEM Dulbecco's modified Eagle's medium G-6-Pase Glucose-6-phosphatase HCB Hexachlorobenzene Lactic dehydrogenase LDH PC PCT PEPCK Porphyria cutanea tarda Pyruvate carboxylase carbohydrate corn oil fungicide glucose glycogen glycogen synthase hexachlorobenzene animal experiment article body weight controlled study disorders of porphyrin and heme metabolism dissolution enzyme activity enzyme phosphorylation experiment female gluconeogenesis glucose transport glycogen analysis glycogen metabolism glycogen synthesis intoxication liver nonhuman priority journal rat Animalia Ciconiiformes Zea mays |
| spellingShingle |
2-allyl-2-isopropyl-acetamide 5-aminolevulinate synthase AIA ALA-S DMEM Dulbecco's modified Eagle's medium G-6-Pase Glucose-6-phosphatase HCB Hexachlorobenzene Lactic dehydrogenase LDH PC PCT PEPCK Porphyria cutanea tarda Pyruvate carboxylase carbohydrate corn oil fungicide glucose glycogen glycogen synthase hexachlorobenzene animal experiment article body weight controlled study disorders of porphyrin and heme metabolism dissolution enzyme activity enzyme phosphorylation experiment female gluconeogenesis glucose transport glycogen analysis glycogen metabolism glycogen synthesis intoxication liver nonhuman priority journal rat Animalia Ciconiiformes Zea mays Glycogen metabolism and glucose transport in experimental porphyria |
| topic_facet |
2-allyl-2-isopropyl-acetamide 5-aminolevulinate synthase AIA ALA-S DMEM Dulbecco's modified Eagle's medium G-6-Pase Glucose-6-phosphatase HCB Hexachlorobenzene Lactic dehydrogenase LDH PC PCT PEPCK Porphyria cutanea tarda Pyruvate carboxylase carbohydrate corn oil fungicide glucose glycogen glycogen synthase hexachlorobenzene animal experiment article body weight controlled study disorders of porphyrin and heme metabolism dissolution enzyme activity enzyme phosphorylation experiment female gluconeogenesis glucose transport glycogen analysis glycogen metabolism glycogen synthesis intoxication liver nonhuman priority journal rat Animalia Ciconiiformes Zea mays |
| description |
Hexachlorobenzene (HCB) is a fungicide of well-known porphyrinogenic ability, which induces an experimental porphyria that resembles human porphyria cutanea tarda (PCT) in several animal species. It has been demonstrated that high glucose ingestion prevents porphyria development, and high-fat/ high-protein diets enhance HCB porphyrinogenic ability. On the contrary, a diet rich in carbohydrates reduces HCB effects. The aim of this work was to study HCB effects on glycogen synthesis and degradation, as well as on glucose synthesis and transport, in order to elucidate whether would justify the beneficial use of carbohydrates in this porphyria. Rats were treated with HCB dissolved in corn oil (five daily doses 100mg/kg body weight). Results showed that: (1) HCB caused an increase in glycogen content; (2) glycogen synthase activity increased three times, and phosphorylase activity decreased about 40% due to fungicide intoxication. The effect of HCB on these two activities accounted for the higher glycogen content observed in treated animals; (3) three gluconeogenic enzymes were reduced 30-50%; (4) glucose uptake in the liver decreased in all weeks studied. The alterations found in glucose synthesis, its uptake in liver and other tissues, and its release from glycogen might contribute to the biochemical porphyria picture and would account for the effect of glucose above mentioned. © 2004 Elsevier Ireland Ltd. All rights reserved. |
| title |
Glycogen metabolism and glucose transport in experimental porphyria |
| title_short |
Glycogen metabolism and glucose transport in experimental porphyria |
| title_full |
Glycogen metabolism and glucose transport in experimental porphyria |
| title_fullStr |
Glycogen metabolism and glucose transport in experimental porphyria |
| title_full_unstemmed |
Glycogen metabolism and glucose transport in experimental porphyria |
| title_sort |
glycogen metabolism and glucose transport in experimental porphyria |
| publishDate |
2004 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0300483X_v197_n2_p164_Taira http://hdl.handle.net/20.500.12110/paper_0300483X_v197_n2_p164_Taira |
| _version_ |
1768545141570666496 |