ArticleJPEN. Journal of parenteral and enteral nutrition2022
Postprandial rise of essential amino acids is impaired during critical illness and unrelated to small-intestinal function.
Article in JPEN. Journal of parenteral and enteral nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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Who cites it
2 citing papers in PubMed, 8 citations in OpenAlex.
- Understanding the complex relationship between amino acid absorption kinetics and postprandial muscle protein synthesis rates in healthy adults and critically ill patients.Current opinion in clinical nutrition and metabolic care · 2026Review
- Postprandial rise of essential amino acids is impaired during critical illness and unrelated to small-intestinal function.JPEN. Journal of parenteral and enteral nutrition · 2022Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPostprandial rise of plasma essential amino acids (EAAs) determines the anabolic effect of dietary protein. Disturbed gastrointestinal function could impair the anabolic response in critically ill patients. Aim was to investigate the postprandial EAA response in critically ill patients and its relation to small-intestinal function.
methodsTwenty-one mechanically ventilated patients and 9 healthy controls received a bolus containing 100 ml of a formula feed (Ensure) and 2 g of 3-O-Methyl-d-glucose (3-OMG) via postpyloric feeding tube. Fasting and postprandial plasma concentrations of EAAs, 3-OMG, total bile salts, and the gut-released hormone fibroblast growth factor 19 (FGF19) were measured over a 4-hour period. Changes over time and between groups were assessed with linear mixed-effects analysis. Early (0-60 minutes) and total postprandial responses are summarized as the incremental area under the curve (iAUC).
resultsAt baseline, fasting EAA levels were similar in both groups: 1181 (1055-1276) vs 1150 (1065-1334) μmol·L-1, P = .87. The early postprandial rise in EAA was not apparent in critically ill patients compared with healthy controls (iAUC
conclusionPostprandial rise of EAA is blunted in critically ill patients and unrelated to glucose absorption measured with 3-OMG. Future studies should aim to delineate governing mechanisms of macronutrient malabsorption.
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