Satiety and memory enhancing effects of a high-protein meal depend on the source of protein
| Autor: | Mariel Fecych, Edward Markus, J. Lee Beverly, Kristy Du, Justin S. Rhodes |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Blood Glucose
Male 0301 basic medicine Glutens Medicine (miscellaneous) 030209 endocrinology & metabolism Egg Proteins Dietary Satiation Biology Rats Sprague-Dawley 03 medical and health sciences 0302 clinical medicine Memory Animals Learning Protein meal Food science Amino Acids Maze Learning chemistry.chemical_classification Meal 030109 nutrition & dietetics Nutrition and Dietetics General Neuroscience Feeding Behavior General Medicine Postprandial Period Rats Amino acid Barnes maze Postprandial Basal (medicine) chemistry Diet High-Protein Dietary Proteins Energy Intake Dark phase Egg white |
| Zdroj: | Nutritional Neuroscience. 21:257-267 |
| ISSN: | 1476-8305 1028-415X |
| Popis: | High- protein diets have become increasingly popular with various touted benefits. However, the extent to which protein quantity and source affects cognitive functioning through altering postprandial amino acid profiles has not been investigated. Further, whether all protein sources are similarly anorexigenic is uncertain. The objective of this study was to determine the influence of protein level and source on Barnes maze performance, satiety and plasma amino acid levels in male Sprague-Dawley rats.Rats were entrained to a meal-feeding schedule consisting of a 30 minutes meal, equivalent to 20% of average daily intake, one hour into the dark phase then ad libitum access to food for 5 h. On test days, rats received one of three isocaloric diets as their first meal, hereafter referred to as Egg White (EW), Wheat Gluten (WG), or Basal, and then were measured for cognitive performance, feeding behavior, or plasma amino acid levels via jugular catheter. Percentage energy from protein was 35% for both EW and WG and 20% for Basal with equal amounts provided by EW and WG proteins.Rats provided EW performed similarly to Basal on the Barnes maze, whereas WG performed worse. EW increased satiety, whereas WG reduced satiety relative to Basal. Both EW and WG increased postprandial concentrations of large neutral and branched chain amino acids relative to Basal, but in EW, concentrations were slower to peak, and peaked to a higher level than WG.Results demonstrate the importance of protein source for cognition and satiety enhancing effects of a high-protein meal. |
| Databáze: | OpenAIRE |
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