Blog
About

  • Record: found
  • Abstract: found
  • Article: not found

Inflammatory mediators and immune function are altered in home parenteral nutrition patients.

Nutrition (Burbank, Los Angeles County, Calif.)

metabolism, Adolescent, immunology, Tumor Necrosis Factor-alpha, therapy, Short Bowel Syndrome, blood, Receptors, Tumor Necrosis Factor, Parenteral Nutrition, Home, Nutritional Status, Middle Aged, Male, Interleukin-6, Inflammation Mediators, Immunoglobulin G, Humans, Flow Cytometry, Female, Enzyme-Linked Immunosorbent Assay, Case-Control Studies, CD8-Positive T-Lymphocytes, CD4 Lymphocyte Count, C-Reactive Protein, Adult

Read this article at

ScienceOpenPublisherPubMed
Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Patients who used home parenteral nutrition (HPN) and healthy, volunteer control subjects were examined to assess relative immune potential and inflammatory marker expression and to investigate the association between HPN and immune parameters. Subjective Global Assessments were performed on all subjects. The peripheral blood concentration of C-reactive protein was determined by enzyme-linked immunosorbent assay. The peripheral blood concentration of systemic inflammatory mediators that included tumor necrosis factor-alpha (TNF-alpha), soluble TNF-alpha receptors p55 and p75, and interleukin-6 were similarly determined. Peripheral blood lymphocytes were isolated and the percentage of circulating CD4+ and CD8+ lymphocytes was determined by flow cytometry. In addition, peripheral blood lymphocytes were cultured in the presence of the T-cell mitogen, phytohemagglutinin, and the proliferative response of the CD3+ population was assessed by flow cytometry. Results of these experiments were obtained for 10 clinically stable patients who had used HPN longer than 2 y and these results were compared by Student's t test with data obtained for 12 normal, volunteer control subjects. Of the 10 patients who used HPN and were examined, seven had short bowel syndrome, two had dysmotility, and one required HPN due to radiation enteritis. Based on Subjective Global Assessments, all patients were well nourished. No difference was observed in TNF-alpha level between groups and C-reactive protein levels were within normal limits (1.2 mg/L in patients, 0.99 mg/L in controls). Soluble TNF-alpha receptors p55 and p75 were significantly increased (P < 0.001), but serum interleukin-6 was not (P = 0.07). The percentage of CD8+ cells and the CD4+/CD8+ ratio were not statistically different between groups. In contrast to this result, the percentage of CD4+ cells and the proliferative T-cell response to phytohemagglutinin were significantly depressed in patients who used HPN versus control subjects. These data suggest the presence of an underlying inflammatory process and subsequent abnormal T-lymphocyte function in patients who use HPN.

      Related collections

      Author and article information

      Journal
      10.1016/j.nut.2005.05.011
      16459221

      Comments

      Comment on this article