| Appropriate Dose of Parenteral Arginine Enhances Immunity of Peripheral Blood Cells and Splenocytes in Rats With Subacute Peritonitis. | |
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MedLine Citation:
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PMID: 22269898 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Arginine deficiency and chronic inflammation may cause immune dysfunction. The authors previously showed that a pharmacological dose of parenteral arginine facilitates ornithine rather than nitric oxide production in subacute peritonitis. Herein, they investigated the effects of different doses of parenteral arginine supplementation on immunocytic subpopulation distribution and function. Materials: Male Wistar rats that underwent cecal punctures for induction of subacute peritonitis were infused with conventional parenteral nutrition solution (1.61% of total calories as arginine) or solutions supplemented with low-, medium-, or high-dose arginine (2.85%, 4.08%, and 6.54% of total calories, respectively) for 7 days. Distributions of T cells, B cells, and monocytes/macrophages and cytokine productions of peripheral blood lymphocytes (PBLs) and splenocytes were analyzed. RESULTS: There were no significant differences in circulating white blood cell numbers and serum tumor necrosis factor (TNF)-α and interferon (IFN)-γ concentrations among groups. Serum nitrate/nitrite (NOx) and interleukin (IL)-2 levels were significantly decreased by arginine in a dose-dependent manner. Animals supplemented with parenteral arginine had significantly decreased productions of concanavalin (Con) A- and lipopolysaccharide (LPS)-stimulated TNF-α in PBLs and splenocytes, spontaneous IL-6 and LPS-stimulated IFN-γ in PBLs, and LPS-stimulated IL-6 in splenocytes. In addition, low-dose arginine significantly increased production of spontaneous IFN-γ in PBLs and splenocytes. High-dose arginine significantly increased spontaneous TNF-α, and Con A stimulated IL-4 and IL-6 in PBLs. Conclusion: Parenteral arginine administration at approximately 4% of total calories may alter PBLs and splenocytic immunity, and >6% of total calories might not be of benefit in rats with subacute peritonitis. |
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Authors:
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Ya-Hui Chen; Chien-Hsing Lee; Li-Sung Hsu; Chien-Chou Hsia; Hui-Chen Lo |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-23 |
Journal Detail:
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Title: JPEN. Journal of parenteral and enteral nutrition Volume: - ISSN: 0148-6071 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7804134 Medline TA: JPEN J Parenter Enteral Nutr Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Changhua Christian Hospital, Changhua, Taiwan; and Chung Shan Medical University, Taichung, Taiwan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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