Grape juice concentrate modulates p16 expression in high fat diet-induced liver steatosis in Wistar rats. 2012

Andressa Orlandeli Ferreira, and Andréa Pittelli Boiago Gollücke, and Juliana Noguti, and Victor Hugo Pereira da Silva, and Elsa Tiemi Hojo Yamamura, and Daniel Araki Ribeiro
Department of Biosciencies, Federal University of Sao Paulo, Santos, Brazil.

OBJECTIVE The goal of this study was to investigate whether subchronic treatment with grape juice concentrate is able to protect the liver from high fat diet injury in rats. The effects of grape juice concentrate treatment on histopathological changes, and immunohistochemistry for p53, p16 and p21 were evaluated. METHODS Male Wistar rats (n = 18) were distributed into three groups: group 1: negative control; group 2: cholesterol at 1% (w/w) in their diet, treated during 5 weeks; and group 3: cholesterol at 1% in their chow during 5 weeks, and grape juice concentrate at 222 mg per day in their drinking-water in the last week only. RESULTS The results pointed out that treatment with grape juice concentrate did not show remarkable differences regarding liver tissue in the cholesterol-exposed group when compared to group 2. However, grape juice concentrate was able to modulate p16 immunoexpression when compared to high fat diet group. p53 and p21 did not show any significant statistical differences among groups. CONCLUSIONS Taken together, our results suggest that subchronic grape juice concentrate administration was able to modulate cell cycle control by downregulation of p16 immunoexpression in high fat diet-induced liver steatosis in rats.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D002453 Cell Cycle The complex series of phenomena, occurring between the end of one CELL DIVISION and the end of the next, by which cellular material is duplicated and then divided between two daughter cells. The cell cycle includes INTERPHASE, which includes G0 PHASE; G1 PHASE; S PHASE; and G2 PHASE, and CELL DIVISION PHASE. Cell Division Cycle,Cell Cycles,Cell Division Cycles,Cycle, Cell,Cycle, Cell Division,Cycles, Cell,Cycles, Cell Division,Division Cycle, Cell,Division Cycles, Cell
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D005234 Fatty Liver Lipid infiltration of the hepatic parenchymal cells resulting in a yellow-colored liver. The abnormal lipid accumulation is usually in the form of TRIGLYCERIDES, either as a single large droplet or multiple small droplets. Fatty liver is caused by an imbalance in the metabolism of FATTY ACIDS. Liver Steatosis,Steatohepatitis,Steatosis of Liver,Visceral Steatosis,Liver Steatoses,Liver, Fatty,Steatohepatitides,Steatoses, Liver,Steatoses, Visceral,Steatosis, Liver,Steatosis, Visceral,Visceral Steatoses
D005638 Fruit The fleshy or dry ripened ovary of a plant, enclosing the seed or seeds. Berries,Legume Pod,Plant Aril,Plant Capsule,Aril, Plant,Arils, Plant,Berry,Capsule, Plant,Capsules, Plant,Fruits,Legume Pods,Plant Arils,Plant Capsules,Pod, Legume,Pods, Legume
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001628 Beverages Liquids that are suitable for drinking. (From Merriam Webster Collegiate Dictionary, 10th ed) Beverage

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