Abstract
Astroglia are the most prevalent cell type in the human central nervous system (CNS) and perform important roles in normal tissue homeostasis, during pathological events and following trauma. Astroglial-derived chemokines have important neurotrophic effects and are important to CNS immunocompetence and response to injury, in part, due to their direct role in leukocyte and microglial cell recruitment. However, while ethanol is known to induce CNS pathologies and to be peripherally immunosuppressive, ethanol effects on chemokine expression in human astroglia are essentially unknown. We have demonstrated that chemotaxis of human U937 leukocytic cells, across a 0.5 μm pore polycarbonate transmembrane insert, is induced in response to culture media collected from 10 μg/ml lipopolysaccharide (LPS)+10 ng/ml interleukin (IL)-1β-stimulated A172 human astroglia cells. The involvement of the chemokine CXCL10 (also known as interferon-γ inducible protein or IP-10) in astroglial-induced chemotaxis of U937 cells has been indicated, as chemotaxis can be reduced by an anti-CXCL10 neutralizing antibody. Interestingly, chemotaxis of U937 cells, in response to astroglial-exposed media, is reduced when astroglia are chronically (9 days) exposed to 50 mM ethanol before stimulation with LPS+IL-1β. Furthermore, we observed that LPS+IL-1β-stimulated CXCL10 production is inhibited in human A172 astroglia exposed to chronic 50 mM ethanol. Thus, alterations in astroglial CXCL10 expression may disrupt CNS immunocompetence and play an important role in ethanol-induced CNS pathologies.
| Original language | English |
|---|---|
| Pages (from-to) | 220-225 |
| Number of pages | 6 |
| Journal | Neuroscience Letters |
| Volume | 362 |
| Issue number | 3 |
| DOIs | |
| State | Published - 27 May 2004 |
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Keywords
- Alcohol
- Brain injury
- Cell migration
- Chemokines
- Glia
- Proinflammatory
Cite this
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Chronic ethanol inhibits CXC chemokine ligand 10 production in human A172 astroglia and astroglial-mediated leukocyte chemotaxis. / Davis, Randall; Syapin, Peter J.
In: Neuroscience Letters, Vol. 362, No. 3, 27.05.2004, p. 220-225.Research output: Contribution to journal › Article
TY - JOUR
T1 - Chronic ethanol inhibits CXC chemokine ligand 10 production in human A172 astroglia and astroglial-mediated leukocyte chemotaxis
AU - Davis, Randall
AU - Syapin, Peter J.
PY - 2004/5/27
Y1 - 2004/5/27
N2 - Astroglia are the most prevalent cell type in the human central nervous system (CNS) and perform important roles in normal tissue homeostasis, during pathological events and following trauma. Astroglial-derived chemokines have important neurotrophic effects and are important to CNS immunocompetence and response to injury, in part, due to their direct role in leukocyte and microglial cell recruitment. However, while ethanol is known to induce CNS pathologies and to be peripherally immunosuppressive, ethanol effects on chemokine expression in human astroglia are essentially unknown. We have demonstrated that chemotaxis of human U937 leukocytic cells, across a 0.5 μm pore polycarbonate transmembrane insert, is induced in response to culture media collected from 10 μg/ml lipopolysaccharide (LPS)+10 ng/ml interleukin (IL)-1β-stimulated A172 human astroglia cells. The involvement of the chemokine CXCL10 (also known as interferon-γ inducible protein or IP-10) in astroglial-induced chemotaxis of U937 cells has been indicated, as chemotaxis can be reduced by an anti-CXCL10 neutralizing antibody. Interestingly, chemotaxis of U937 cells, in response to astroglial-exposed media, is reduced when astroglia are chronically (9 days) exposed to 50 mM ethanol before stimulation with LPS+IL-1β. Furthermore, we observed that LPS+IL-1β-stimulated CXCL10 production is inhibited in human A172 astroglia exposed to chronic 50 mM ethanol. Thus, alterations in astroglial CXCL10 expression may disrupt CNS immunocompetence and play an important role in ethanol-induced CNS pathologies.
AB - Astroglia are the most prevalent cell type in the human central nervous system (CNS) and perform important roles in normal tissue homeostasis, during pathological events and following trauma. Astroglial-derived chemokines have important neurotrophic effects and are important to CNS immunocompetence and response to injury, in part, due to their direct role in leukocyte and microglial cell recruitment. However, while ethanol is known to induce CNS pathologies and to be peripherally immunosuppressive, ethanol effects on chemokine expression in human astroglia are essentially unknown. We have demonstrated that chemotaxis of human U937 leukocytic cells, across a 0.5 μm pore polycarbonate transmembrane insert, is induced in response to culture media collected from 10 μg/ml lipopolysaccharide (LPS)+10 ng/ml interleukin (IL)-1β-stimulated A172 human astroglia cells. The involvement of the chemokine CXCL10 (also known as interferon-γ inducible protein or IP-10) in astroglial-induced chemotaxis of U937 cells has been indicated, as chemotaxis can be reduced by an anti-CXCL10 neutralizing antibody. Interestingly, chemotaxis of U937 cells, in response to astroglial-exposed media, is reduced when astroglia are chronically (9 days) exposed to 50 mM ethanol before stimulation with LPS+IL-1β. Furthermore, we observed that LPS+IL-1β-stimulated CXCL10 production is inhibited in human A172 astroglia exposed to chronic 50 mM ethanol. Thus, alterations in astroglial CXCL10 expression may disrupt CNS immunocompetence and play an important role in ethanol-induced CNS pathologies.
KW - Alcohol
KW - Brain injury
KW - Cell migration
KW - Chemokines
KW - Glia
KW - Proinflammatory
UR - http://www.scopus.com/inward/record.url?scp=2442545104&partnerID=8YFLogxK
U2 - 10.1016/j.neulet.2004.03.015
DO - 10.1016/j.neulet.2004.03.015
M3 - Article
C2 - 15158019
AN - SCOPUS:2442545104
VL - 362
SP - 220
EP - 225
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
IS - 3
ER -