Related Experiment Videos
Intestinal microbial translocation: immunologic consequences and effects of interleukin-4
1Department of Surgery, University of Pennsylvania School of Medicine, Philadelphia.
Surgery
|November 1, 1994
Summary
Chemically defined diets (CDD) impair immune cell function and increase microbial translocation. Interleukin-4 (IL-4) administration mitigates these effects, suggesting its potential benefit in sepsis cases involving gut barrier dysfunction.
Area of Science:
- Immunology
- Gastroenterology
- Microbiology
Background:
- Administration of chemically defined diets (CDD) can lead to intestinal microbial translocation.
- The immunologic consequences of CDD-induced microbial translocation are not fully understood.
Purpose of the Study:
- To evaluate the effects of CDD feeding and interleukin-4 (IL-4) on immune cell function.
- To assess the impact on mesenteric lymphocytes, peritoneal macrophages (PMO), and hepatic Kupffer cells (KC).
Main Methods:
- BALB/C mice were fed either a regular diet (RD) or CDD for 14 days.
- Immune cell functions, including lymphocyte responses, cytokine production, and phagocytosis, were measured.
- The effects of IL-4 administration in conjunction with CDD were also investigated.
Main Results:
- CDD feeding impaired mesenteric lymphocyte function and reduced peritoneal macrophage (PMO) activity.
- Hepatic Kupffer cell (KC) function remained largely unaffected by CDD.
- IL-4 administration decreased bacterial translocation and enhanced PMO and lymphocyte functions.
Conclusions:
- IL-4 may be a beneficial therapeutic agent in conditions where intestinal microbial translocation contributes to sepsis.
- Targeting immune responses with IL-4 could mitigate the adverse effects of CDD-induced immune dysregulation.