Effects of chronic ethanol feeding on murine dendritic cell numbers, turnover rate, and dendropoiesis

Michelle R. Edsen-Moore, Ji Fan, Kristin J. Ness, Jacquie R. Marietta, Robert T. Cook, Annette J. Schlueter

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Background: Chronic alcoholics have increased susceptibility to and severity of infection, which are likely to be a result of impaired immune defense mechanisms. The contribution of dendritic cells (DC) to these immune defense changes is not well understood. Alterations in DC numbers, dendropoiesis, and lifespan have not been specifically studied in vivo in chronic ethanol (EtOH) exposure models. As DC play an essential role in initiating immune responses, alterations in these DC characteristics would help explain changes observed in adaptive immune responses. Methods: Mice received 20% EtOH (w/v) in the drinking water for up to 28 weeks, with mouse chow ad libitum. In EtOH-fed and water control mice, DC were enumerated by flow cytometry. The effect of EtOH on DC precursor numbers was determined by differentiation in vitro in the presence of granulocyte-macrophage colony-stimulating factor and interleukin-4, and the effect of an EtOH environment on untreated DC differentiation was measured following bone marrow transfer to irradiated hosts. DC turnover rate was also examined by bromode-oxyuridine incorporation and loss. Results: The percentage and absolute numbers of DC were decreased in spleen and increased in thymus beginning as early as 4 weeks of EtOH feeding. In addition, the overall cellularity of spleen and thymus were altered by this regimen. However, chronic EtOH consumption did not adversely affect DC precursor numbers, differentiation abilities, or turnover rates. Conclusions: Decreased splenic DC numbers observed following chronic murine EtOH consumption are not because of altered DC precursor numbers or differentiation, nor increased DC turnover rate. Similarly, increased thymic DC numbers are not the result of alterations in DC precursor differentiation or turnover rate. Compartment size plays a role in determining splenic and thymic DC numbers following chronic EtOH feeding. EtOH-induced alterations in total DC numbers provide several mechanisms to partially explain why chronic alcoholics have increased susceptibility to infections.

Original languageEnglish (US)
Pages (from-to)1309-1320
Number of pages12
JournalAlcoholism: Clinical and Experimental Research
Volume32
Issue number7
DOIs
StatePublished - Jul 2008
Externally publishedYes

Fingerprint

Dendritic Cells
Ethanol
Cell Count
Thymus
Cell Differentiation
Alcoholics
Thymus Gland
Spleen
Flow cytometry
Adaptive Immunity
Granulocyte-Macrophage Colony-Stimulating Factor
Infection
Drinking Water
Interleukin-4
Flow Cytometry
Bone

Keywords

  • Dendritic Cells
  • Dendropoiesis
  • Ethanol
  • Mouse
  • Precursor

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Psychiatry and Mental health
  • Toxicology
  • Medicine(all)

Cite this

Effects of chronic ethanol feeding on murine dendritic cell numbers, turnover rate, and dendropoiesis. / Edsen-Moore, Michelle R.; Fan, Ji; Ness, Kristin J.; Marietta, Jacquie R.; Cook, Robert T.; Schlueter, Annette J.

In: Alcoholism: Clinical and Experimental Research, Vol. 32, No. 7, 07.2008, p. 1309-1320.

Research output: Contribution to journalArticle

Edsen-Moore, Michelle R. ; Fan, Ji ; Ness, Kristin J. ; Marietta, Jacquie R. ; Cook, Robert T. ; Schlueter, Annette J. / Effects of chronic ethanol feeding on murine dendritic cell numbers, turnover rate, and dendropoiesis. In: Alcoholism: Clinical and Experimental Research. 2008 ; Vol. 32, No. 7. pp. 1309-1320.
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AU - Edsen-Moore, Michelle R.

AU - Fan, Ji

AU - Ness, Kristin J.

AU - Marietta, Jacquie R.

AU - Cook, Robert T.

AU - Schlueter, Annette J.

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AB - Background: Chronic alcoholics have increased susceptibility to and severity of infection, which are likely to be a result of impaired immune defense mechanisms. The contribution of dendritic cells (DC) to these immune defense changes is not well understood. Alterations in DC numbers, dendropoiesis, and lifespan have not been specifically studied in vivo in chronic ethanol (EtOH) exposure models. As DC play an essential role in initiating immune responses, alterations in these DC characteristics would help explain changes observed in adaptive immune responses. Methods: Mice received 20% EtOH (w/v) in the drinking water for up to 28 weeks, with mouse chow ad libitum. In EtOH-fed and water control mice, DC were enumerated by flow cytometry. The effect of EtOH on DC precursor numbers was determined by differentiation in vitro in the presence of granulocyte-macrophage colony-stimulating factor and interleukin-4, and the effect of an EtOH environment on untreated DC differentiation was measured following bone marrow transfer to irradiated hosts. DC turnover rate was also examined by bromode-oxyuridine incorporation and loss. Results: The percentage and absolute numbers of DC were decreased in spleen and increased in thymus beginning as early as 4 weeks of EtOH feeding. In addition, the overall cellularity of spleen and thymus were altered by this regimen. However, chronic EtOH consumption did not adversely affect DC precursor numbers, differentiation abilities, or turnover rates. Conclusions: Decreased splenic DC numbers observed following chronic murine EtOH consumption are not because of altered DC precursor numbers or differentiation, nor increased DC turnover rate. Similarly, increased thymic DC numbers are not the result of alterations in DC precursor differentiation or turnover rate. Compartment size plays a role in determining splenic and thymic DC numbers following chronic EtOH feeding. EtOH-induced alterations in total DC numbers provide several mechanisms to partially explain why chronic alcoholics have increased susceptibility to infections.

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