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Differential gene expression of interleukin-1 receptor associated kinase-1 and interleukin-1 receptor associated kinase-M in peripheral blood mononuclear cells of young and aged rats following preconditioning with endotoxin.

Publication ,  Journal Article
Li, Y; Howell, EA; Lagoo, AS; Kuchibhatla, M; Pan, H; Cohen, HJ; Lagoo, SA
Published in: Shock
January 2009

The IL-1 receptor-associated kinase 1 (IRAK-1) and IRAK-M are key signaling molecules in cellular responses to endotoxin initiated through the Toll-like receptors (TLRs). The aim of this study was to evaluate the effect of age on the modulation of TLRs and IRAK-1 and IRAK-M in peripheral blood mononuclear cells (PBMCs) exposed in vitro to endotoxin under conditions that could induce endotoxin tolerance. Peripheral blood mononuclear cells obtained from young (4- to 6-month-old) and aged (24- to 26-month-old) Brown Norway rats were treated with high-dose LPS, with or without priming with low-dose LPS. In comparison with younger rats, the intensity of TLR-4 expression was persistently high in monocytes from aged rats after stimulation with LPS and was not decreased by priming with low-dose LPS (P < 0.05). Messenger RNA (mRNA) for TLR-4 in PBMCs from aged rats did not show any decrease after priming with low-dose LPS as seen in PBMCs from young rats at 24 h (P = 0.01) after restimulation. In PBMCs from young rats, but not aged rats, preconditioning with low-dose LPS and subsequent stimulation with high-dose LPS resulted in markedly decreased IRAK-1 protein (P = 0.02) and decreased mRNA for IRAK-1 (P < 0.05). In contrast, PBMCs from aged rats treated in this manner continued to express measurable levels of IRAK-1 protein. Preconditioning with low-dose LPS caused an increase in both IRAK-M protein and mRNA (P = 0.05) after stimulation with high-dose LPS only in cells from young rats. These phenotypic characteristics of PBMCs from aged rats can interfere with their ability to develop tolerance to endotoxin.

Duke Scholars

Published In

Shock

DOI

EISSN

1540-0514

Publication Date

January 2009

Volume

31

Issue

1

Start / End Page

55 / 63

Location

United States

Related Subject Headings

  • Toll-Like Receptor 4
  • Rats
  • Protein Serine-Threonine Kinases
  • Male
  • Lipopolysaccharides
  • Leukocytes, Mononuclear
  • Interleukin-1 Receptor-Associated Kinases
  • Gene Expression Regulation, Enzymologic
  • Emergency & Critical Care Medicine
  • Drug Tolerance
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Li, Y., Howell, E. A., Lagoo, A. S., Kuchibhatla, M., Pan, H., Cohen, H. J., & Lagoo, S. A. (2009). Differential gene expression of interleukin-1 receptor associated kinase-1 and interleukin-1 receptor associated kinase-M in peripheral blood mononuclear cells of young and aged rats following preconditioning with endotoxin. Shock, 31(1), 55–63. https://doi.org/10.1097/SHK.0b013e3181778ab2
Li, Yingzhe, E Annette Howell, Anand S. Lagoo, Maragatha Kuchibhatla, Hongjie Pan, Harvey J. Cohen, and Sandhya A. Lagoo. “Differential gene expression of interleukin-1 receptor associated kinase-1 and interleukin-1 receptor associated kinase-M in peripheral blood mononuclear cells of young and aged rats following preconditioning with endotoxin.Shock 31, no. 1 (January 2009): 55–63. https://doi.org/10.1097/SHK.0b013e3181778ab2.

Published In

Shock

DOI

EISSN

1540-0514

Publication Date

January 2009

Volume

31

Issue

1

Start / End Page

55 / 63

Location

United States

Related Subject Headings

  • Toll-Like Receptor 4
  • Rats
  • Protein Serine-Threonine Kinases
  • Male
  • Lipopolysaccharides
  • Leukocytes, Mononuclear
  • Interleukin-1 Receptor-Associated Kinases
  • Gene Expression Regulation, Enzymologic
  • Emergency & Critical Care Medicine
  • Drug Tolerance