Petra G. Boelens

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The aim of this review, a summary of the putative biological actions of flavonoids, was to obtain a further understanding of the reported beneficial health effects of these substances. Flavonoids occur naturally in fruit, vegetables, and beverages such as tea and wine. Research in the field of flavonoids has increased since the discovery of the French(More)
BACKGROUND Care for patients with colon and rectal cancer has improved in the last 20years; however considerable variation still exists in cancer management and outcome between European countries. Large variation is also apparent between national guidelines and patterns of cancer care in Europe. Therefore, EURECCA, which is the acronym of European(More)
BACKGROUND A metabolic relation exists between glutamine and arginine, 2 amino acids with properties that enhance the recovery of seriously ill patients. It is possible that glutamine exerts part of its beneficial effects by enhancing the availability of arginine. OBJECTIVES We aimed to quantify under postabsorptive conditions the metabolic pathway of(More)
Glutamine should be reclassified as a conditionally essential amino acid in the catabolic state because the body's glutamine expenditures exceed synthesis and low glutamine levels in plasma are associated with poor clinical outcome. After severe stress, several amino acids are mobilized from muscle tissue to supply energy and substrate to the host.(More)
PURPOSE OF REVIEW The aim of this review is to describe the clinical relevance of supplementation of glutamine from the recent literature. First, new basic research is examined and subsequently recent clinical trials and a metaanalysis are illustrated. RECENT FINDINGS Glutamine has a major impact on the functionality of the immune system. It has recently(More)
Some interesting shifts have taken place in the diagnostic approach for detection of colorectal lesions over the past decade. This article accompanies the recent EURECCA consensus group reccomendations for optimal management of colon and rectal cancers. In summary, imaging has a crucial role to play in the diagnosis, staging assessment and follow up of(More)
BACKGROUND The liver plays a central role in amino acid metabolism. However, because of limited accessibility of the portal vein, human data on this subject are scarce. OBJECTIVE We studied hepatic amino acid metabolism in noncirrhotic fasting patients undergoing liver surgery. DESIGN Twenty patients undergoing hepatectomy for colorectal metastases in a(More)
The aim of this study was to investigate the effect of glutamine-(Gln)-enriched enteral nutrition (EN) on human leukocyte antigen (HLA)-DR and FcgammaR1/CD64 expression on monocytes and plasma glutamine concentrations in multi-trauma patients. HLA-DR expression on monocytes is crucial in the presentation of foreign antigen to the immune system and is(More)
OBJECTIVE Glutamine and arginine are both used as nutritional supplements in critically ill patients. Although glutamine has been shown to be beneficial for the metabolically stressed patient, considerations about arginine supplementation are not unanimously determined. Our aim is to review the current knowledge on the possible interplay between glutamine(More)
BACKGROUND The current trend in postoperative nutrition is to promote a normal oral diet as early as possible. However, postoperative ileus is a frequent and common problem after major abdominal surgery. This study was designed to investigate whether early enteral nutrition (EEN), as a bridge to a normal diet, can reduce postoperative ileus. METHODS(More)