Green Tea Polyphenols Inhibit Metalloproteinase Activities in the Skin, Muscle, and Blood of Rainbow Trout

Saito, Masataka; Saito, Kyoko; Kunisaki, Naomichi; Kimura, Shigeru

doi:10.1021/jf025741t

Cited by 33 publications

(17 citation statements)

References 36 publications

(43 reference statements)

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“…Only slight improvement in weight gain of abalone fed with the FSG diet containing a by‐product of green tea at the expense of wheat flour in the FS diet suggests that green tea is effectively utilized over wheat flour by abalone. This further suggests that the various sources of green tea available on market have a high potential of usage in the abalone fisheries (Saito et al. 2002; Cho et al in press).…”

Section: Discussionmentioning

confidence: 99%

Effect of casein substitution with fishmeal, soybean meal and crustacean meal in the diet of the abalone Haliotis discus hannai Ino

Cho

Park²,

Kim

et al. 2008

Aquaculture Nutrition

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The effect of dietary substitution of casein with fishmeal, soybean meal and crustacean meal on the growth of the abalone Haliotis discus hannai Ino was determined. A 350 g casein per kilogram diet was included into the CS diet. The whole casein was then substituted by: (1) 300 g fishmeal and 200 g soybean meal per kilogram diet (FS), (2) 200 g fishmeal, 200 g soybean meal and 130 g krill meal per kilogram diet (FSK), (3) 200 g fishmeal, 200 g soybean meal and 280 g red crab meal per kilogram diet (FSC) or (4) 200 g fishmeal, 200 g soybean meal and 130 g shrimp head meal per kilogram diet (FSS). In addition, a 50‐g by‐product of green tea per kilogram diet was included in the FS diet to form the FSG diet. Sea tangle (ST)diet was supplied to abalone as a control feed. Weight gain, final shell length and final shell width of abalone fed with the various substitution feeds (FS, FSK, FSC, FSS and FSG) were not different from those obtained with the CS diet. All the formulated feeds, however, produced higher weight gain and final shell width values than the ST diet. The results of this study show that casein can be replaced with a combination of fishmeal, soybean meal, krill meal, crab meal and/or shrimp head meal in the diet without a retardation of growth of abalone.

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Section: Discussionmentioning

confidence: 99%

Effect of casein substitution with fishmeal, soybean meal and crustacean meal in the diet of the abalone Haliotis discus hannai Ino

Cho

Park²,

Kim

et al. 2008

Aquaculture Nutrition

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show abstract

“…Green tea polyphenols, especially EGCG, have been found to inhibit a range of proteolytic activities ranging from invasive activities such as the matrix metalloproteases (MMPs) involved in tumour survival, expansion and metastatis [21,27] to proteases present in fish muscle [40]. The galloyl group seems be crucial for protease inhibition by EGCG and modelling studies have suggested that EGCG inhibits the serine protease urokinase by binding to the active site [21].…”

Section: Protein Degradationmentioning

confidence: 99%

The inhibitory effects of berry polyphenols on digestive enzymes

McDougall¹,

Stewart²

2005

BioFactors

374

218

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The evidence for the effect of polyphenol components of berries on digestive enzymes is reviewed. Anthocyanins inhibit alpha-glucosidase activity and can reduce blood glucose levels after starch-rich meals, a proven clinical therapy for controlling type II diabetes. Ellagitannins inhibit alpha-amylase activity and there is potential for synergistic effects on starch degradation after ingestion of berries such as raspberries and strawberries, which contain substantial amounts of ellagitannins and anthocyanins. A range of berry polyphenols (e.g. flavonols, anthocyanidins, ellagitannins and proanthocyanidins) can inhibit protease activities at levels which could affect protein digestion in the gastrointestinal tract. In contrast, potential for the inhibition of gastrointestinal lipase activity, a proven therapeutic target for the control of obesity through reduced fat digestion, may be limited to proanthocyanidins. Taking into account the manifold possible synergies for inhibition of starch, protein and/or lipid digestion by the spectrum of polyphenol components present within berry species, the inhibition of digestive enzymes by dietary polyphenols may represent an under-reported mechanism for delivering some of the health benefits attributed to a diet rich in fruit and vegetables.

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“…However, only a few studies with green tea have been applied to fisheries sciences so far (Saito et al 2002;Liu and Pan 2004), and the use of green tea has high potential for the several aspects mentioned above in aquaculture as well.…”

Section: Introductionmentioning

confidence: 99%

Effect of dietary inclusion of various sources of green tea on growth, body composition and blood chemistry of the juvenile olive flounder, Paralichthys olivaceus

Cho

Lee

Park

et al. 2006

Fish Physiol Biochem

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This study was performed to determine the effect of the dietary inclusion of various sources of green tea on growth, body composition and blood chemistry of the olive flounder. Twenty-five juvenile fish were distributed into each of 15 180 l flow-through tanks. Five experimental diets with triplicates were prepared: control, raw leaves, dry leaves, by-product and extract. The 5% various sources (raw leaves, dry leaves and by-product) of green tea were included in the experimental diets at the expense of 5% wheat flour. The extract was diluted with water and mixed with the ingredients to maintain 5% green tea at the same concentration as in the other diets. Weight gain and specific growth rate of fish fed the control diet and experimental diet containing extract were higher than those of fish fed the diets containing raw and dry leaves and by-product. Feed and protein efficiency ratio for fish fed the control diet and diet containing extract was higher than for fish fed the diets containing raw leaves and by-product. The level of low-density lipoprotein (LDL) cholesterol of fish fed the control diet was higher than that of fish fed the other diets containing various sources of green tea. The glutamic oxaloacetic transaminase (GPT) concentration of fish fed the diets containing raw leaves and extract was lower than that of fish fed the control diet. Crude lipid content of liver in fish fed the control diet was higher than that in fish fed the diets containing raw and dry leaves and by-product but was not significantly different from that of fish fed the diet containing extract. Dietary inclusion of extract was the most effective way to improve growth and feed utilization of the olive flounder among the various sources of green tea, and all sources of green tea were effective in lowering serum LDL cholesterol and GPT of the fish.

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Green Tea Polyphenols Inhibit Metalloproteinase Activities in the Skin, Muscle, and Blood of Rainbow Trout

Cited by 33 publications

References 36 publications

Effect of casein substitution with fishmeal, soybean meal and crustacean meal in the diet of the abalone Haliotis discus hannai Ino

Effect of casein substitution with fishmeal, soybean meal and crustacean meal in the diet of the abalone Haliotis discus hannai Ino

The inhibitory effects of berry polyphenols on digestive enzymes

Effect of dietary inclusion of various sources of green tea on growth, body composition and blood chemistry of the juvenile olive flounder, Paralichthys olivaceus

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