The urea cycle of rat white adipose tissue
White adipose tissue (WAT) contains a powerful metabolic machinery related to energy metabolism and partition. The adaptive, regulatory, size and structural variety of WAT agrees with this control role. However, its nitrogen metabolism has been sparsely studied and we know close to nothing about its...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/69734 |
| Acceso en línea: | https://hdl.handle.net/2445/69734 |
| Access Level: | acceso abierto |
| Palabra clave: | Urea Teixit adipós Glucòlisi Aminoàcids Rates (Animals de laboratori) Adipose tissues Glycolysis Amino acids Rats as laboratory animals |
| Sumario: | White adipose tissue (WAT) contains a powerful metabolic machinery related to energy metabolism and partition. The adaptive, regulatory, size and structural variety of WAT agrees with this control role. However, its nitrogen metabolism has been sparsely studied and we know close to nothing about its implication on N-related processes and homoeostasis. We have studied, and found a complete urea cycle (liver type) in four WAT sites (gene expressions and enzyme activities). We postulated a possible function of the cycle (under basal conditions) in the control of arginine handling through citrulline synthesis. In our opinion, the metabolic and control potential of WAT on energy metabolism is second only to liver. This impression should be extended to amino acid metabolism too, WAT providing an extra-intestinal source of citrulline to maintain the body availability of arginine independently of the operation of intestine-liver urea cycle for N disposal. |
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