Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia
The armoured catfish, Liposarcus pardalis, tolerates severe hypoxia at high temperatures. Although this species can breathe air, it also has a strong anaerobic metabolism. We assessed tissue to plasma glucose ratios and glycogen and lactate in a number of tissues under "natural" pond hypoxia, and se...
| Autor principal: | MacCormack, Tyson James |
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| Outros Autores: | Lewis, Johanne Mari, Almeida-Val, Vera Maria Fonseca, Val, Adalberto Luis, Driedzic, William Robert |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Experimental Zoology Part A: Comparative Experimental Biology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18765 |
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oai:repositorio:1-18765 |
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oai:repositorio:1-18765 Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia MacCormack, Tyson James Lewis, Johanne Mari Almeida-Val, Vera Maria Fonseca Val, Adalberto Luis Driedzic, William Robert Adenosine Calcium Glucose Hydrocortisone Lactic Acid Derivative Oxygen Acidosis Anaerobic Growth Animals Anoxia Blood Brain Breathing Carbohydrate Metabolism Catfish Chemistry Energy Metabolism Gill Glucose Blood Level Glycogen Liver Level Heart Muscle Metabolism Muscle Phosphorylation Physiology Temperature Acidosis Adenosine Anaerobiosis Animal Anoxia Blood Glucose Brain Calcium Carbohydrate Metabolism Catfishes Energy Metabolism Gills Glucose Hydrocortisone Lactates Liver Glycogen Muscles Myocardium Oxygen Phosphorylation Respiration Temperature Callichthys Callichthys Liposarcus Pardalis The armoured catfish, Liposarcus pardalis, tolerates severe hypoxia at high temperatures. Although this species can breathe air, it also has a strong anaerobic metabolism. We assessed tissue to plasma glucose ratios and glycogen and lactate in a number of tissues under "natural" pond hypoxia, and severe aquarium hypoxia without aerial respiration. Armour lactate content and adenosine in brain and heart were also investigated. During normoxia, tissue to plasma glucose ratios in gill, brain, and heart were close to one. Hypoxia increased plasma glucose and decreased tissue to plasma ratios to less than one, suggesting glucose phosphorylation is activated more than uptake. High normoxic white muscle glucose relative to plasma suggests gluconeogenesis or active glucose uptake. Excess muscle glucose may serve as a metabolic reserve since hypoxia decreased muscle to plasma glucose ratios. Mild pond hypoxia changed glucose management in the absence of lactate accumulation. Lactate was elevated in all tissues except armour following aquarium hypoxia; however, confinement in aquaria increased armour lactate, even under normoxia. A stress-associated acidosis may contribute to armour lactate sequestration. High plasma lactate levels were associated with brain adenosine accumulation. An increase in heart adenosine was triggered by confinement in aquaria, although not by hypoxia alone. © 2006 Wiley-Liss, Inc. 2020-06-15T22:02:56Z 2020-06-15T22:02:56Z 2006 Artigo https://repositorio.inpa.gov.br/handle/1/18765 10.1002/jez.a.274 en Volume 305, Número 4, Pags. 363-375 Restrito Journal of Experimental Zoology Part A: Comparative Experimental Biology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Adenosine Calcium Glucose Hydrocortisone Lactic Acid Derivative Oxygen Acidosis Anaerobic Growth Animals Anoxia Blood Brain Breathing Carbohydrate Metabolism Catfish Chemistry Energy Metabolism Gill Glucose Blood Level Glycogen Liver Level Heart Muscle Metabolism Muscle Phosphorylation Physiology Temperature Acidosis Adenosine Anaerobiosis Animal Anoxia Blood Glucose Brain Calcium Carbohydrate Metabolism Catfishes Energy Metabolism Gills Glucose Hydrocortisone Lactates Liver Glycogen Muscles Myocardium Oxygen Phosphorylation Respiration Temperature Callichthys Callichthys Liposarcus Pardalis |
| spellingShingle |
Adenosine Calcium Glucose Hydrocortisone Lactic Acid Derivative Oxygen Acidosis Anaerobic Growth Animals Anoxia Blood Brain Breathing Carbohydrate Metabolism Catfish Chemistry Energy Metabolism Gill Glucose Blood Level Glycogen Liver Level Heart Muscle Metabolism Muscle Phosphorylation Physiology Temperature Acidosis Adenosine Anaerobiosis Animal Anoxia Blood Glucose Brain Calcium Carbohydrate Metabolism Catfishes Energy Metabolism Gills Glucose Hydrocortisone Lactates Liver Glycogen Muscles Myocardium Oxygen Phosphorylation Respiration Temperature Callichthys Callichthys Liposarcus Pardalis MacCormack, Tyson James Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| topic_facet |
Adenosine Calcium Glucose Hydrocortisone Lactic Acid Derivative Oxygen Acidosis Anaerobic Growth Animals Anoxia Blood Brain Breathing Carbohydrate Metabolism Catfish Chemistry Energy Metabolism Gill Glucose Blood Level Glycogen Liver Level Heart Muscle Metabolism Muscle Phosphorylation Physiology Temperature Acidosis Adenosine Anaerobiosis Animal Anoxia Blood Glucose Brain Calcium Carbohydrate Metabolism Catfishes Energy Metabolism Gills Glucose Hydrocortisone Lactates Liver Glycogen Muscles Myocardium Oxygen Phosphorylation Respiration Temperature Callichthys Callichthys Liposarcus Pardalis |
| description |
The armoured catfish, Liposarcus pardalis, tolerates severe hypoxia at high temperatures. Although this species can breathe air, it also has a strong anaerobic metabolism. We assessed tissue to plasma glucose ratios and glycogen and lactate in a number of tissues under "natural" pond hypoxia, and severe aquarium hypoxia without aerial respiration. Armour lactate content and adenosine in brain and heart were also investigated. During normoxia, tissue to plasma glucose ratios in gill, brain, and heart were close to one. Hypoxia increased plasma glucose and decreased tissue to plasma ratios to less than one, suggesting glucose phosphorylation is activated more than uptake. High normoxic white muscle glucose relative to plasma suggests gluconeogenesis or active glucose uptake. Excess muscle glucose may serve as a metabolic reserve since hypoxia decreased muscle to plasma glucose ratios. Mild pond hypoxia changed glucose management in the absence of lactate accumulation. Lactate was elevated in all tissues except armour following aquarium hypoxia; however, confinement in aquaria increased armour lactate, even under normoxia. A stress-associated acidosis may contribute to armour lactate sequestration. High plasma lactate levels were associated with brain adenosine accumulation. An increase in heart adenosine was triggered by confinement in aquaria, although not by hypoxia alone. © 2006 Wiley-Liss, Inc. |
| format |
Artigo |
| author |
MacCormack, Tyson James |
| author2 |
Lewis, Johanne Mari Almeida-Val, Vera Maria Fonseca Val, Adalberto Luis Driedzic, William Robert |
| author2Str |
Lewis, Johanne Mari Almeida-Val, Vera Maria Fonseca Val, Adalberto Luis Driedzic, William Robert |
| title |
Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| title_short |
Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| title_full |
Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| title_fullStr |
Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| title_full_unstemmed |
Carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, Liposarcus pardalis (Castelnau), during hypoxia |
| title_sort |
carbohydrate management, anaerobic metabolism, and adenosine levels in the armoured catfish, liposarcus pardalis (castelnau), during hypoxia |
| publisher |
Journal of Experimental Zoology Part A: Comparative Experimental Biology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18765 |
| _version_ |
1787142772806909952 |
| score |
11.653393 |