Steatosis recovery after treatment with a balanced sunflower or olive oil-based diet: involvement of perisinusoidal stellate cells
AIM: To analyze the relationship between perisinusoidal stellate cell (PSC) activation and the dietary fat quantity and composition in the treatment of hepatic steatosis. METHODS: Using an experimental rat model of steatosis based on the intake of a hyperlipidic diet (14% fat as olive oil or sunfl o...
| Autores: | , , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versión aceptada para publicación |
| Data de publicação: | 2005 |
| País: | España |
| Recursos: | Universidad de Jaén |
| Repositório: | RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén |
| OAI Identifier: | oai:ruja.ujaen.es:10953/2227 |
| Acesso em linha: | https://doi.org/10.3748/wjg.v11.i47.7480 https://hdl.handle.net/10953/2227 |
| Access Level: | Acceso aberto |
| Palavra-chave: | PSCs GFAP Steatosis Collagen Hyperlipidic diet Liver recovery Olive oil |
| Resumo: | AIM: To analyze the relationship between perisinusoidal stellate cell (PSC) activation and the dietary fat quantity and composition in the treatment of hepatic steatosis. METHODS: Using an experimental rat model of steatosis based on the intake of a hyperlipidic diet (14% fat as olive oil or sunfl ower oil, HL-O and HL-S, respectively), we analyzed the liver’s capability of recovery after the treatment with a normal-lipidic diet (5% fat as olive oil or sunfl ower oil, NL-O and NL-S, respectively) by immunocytochemical and Western blot analysis of glial fi brillary acidic protein (GFAP) expression in PSCs, collagen quantification and serum aminotransferase determination. RESULTS: The fatty infi ltration in the steatotic livers decreased after the treatment with both NL diets, indicating liver recovery. This decrease was accompanied with a lower collagen deposition and aminotransferase level as well as changes in the PSC population that increased the GFAP expression. The above-mentioned effects were more pronounced in animals fed on NL-O based diet. CONCLUSION: Treatment with a balanced diet enriched in olive oil contributes to the liver recovery from a steatotic process. The PSC phenotype is a marker of this hepatic-recovery model. |
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