Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance.

Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Research Abstract Details 

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Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Abstract Text:

Nympha B D'Souza El-Guindy,Willem J de Villiers,Dennis E Doherty,

Previous studies have shown that alcohol (ethanol [EtOH]) intoxication impairs lung immunity by affecting cytokines pivotal to the inflammatory process. The objective of this study was to test the hypothesis that acute alcohol intoxication impairs lung innate immunity by downregulating the expression of proinflammatory mediators while simultaneously upregulating anti-inflammatory mediators. EtOH was administered to the mice 0.5h prior to an intratracheal injection of Escherichia coli lipopolysaccharide (LPS). The animals were killed either 4 or 24h after LPS to recover plasma, lungs, and bronchoalveolar lavage fluid. Lung inflammatory cytokines tumor necrosis factor-alpha (TNF-alpha), interleukin-1 beta (IL-1beta), IL-6, macrophage inhibitory factor (MIF), IL-10, TGF-beta, and receptors for TNF-alpha, IL-1beta, IL-6, and TGF-beta as well as glycoprotein (gp)130 and corticosterone (CS) levels were evaluated at mRNA and protein level. While the mRNA expression and the soluble TNF-Rp55 levels were significantly upregulated by EtOH, LPS-induced TNF-alpha activity, TNF-Rp55 mRNA expression, and soluble TNF-Rp55 levels were significantly suppressed. The LPS-induced expression of IL-1beta, IL-6, MIF, gp130, and receptors IL-1RI, IL-1RII, and IL-6Ralpha were also significantly impaired by EtOH. EtOH increased significantly the basal IL-10 activity at 3h, which continued to remain elevated even at 24h. The EtOH effect on IL-10 activity persisted even in LPS-challenged mice. EtOH and LPS augmented lung CS levels independently of each other. EtOH suppressed upregulation of TGF-beta1 mRNA expression by LPS and blocked completely LPS-induced TGF-beta1 secretion. In conclusion, the data suggest that the suppression of acute lung inflammation by EtOH intoxication is largely due to impairment by EtOH of proinflammatory cytokine signaling at the levels of cytokine expression and secretion as well as receptor expression and soluble receptor activity. The augmentation by EtOH of anti-inflammatory mediators' secretion most likely shifts the cytokine balance in the anti-inflammatory direction.

Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Publishing Authors By Initials

NB D'Souza El-Guindy,WJ de Villiers,DE Doherty,

For similar natural sciences: time: time factors research abstracts see: natural sciences: time: time factors research

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Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Alcohol (Fayetteville, N.Y.)

VOLUME: 41

Page Numbers: 335-45

Journal Abbreviation: Alcohol

ISSN: 0741-8329

DAY: 3

MONTH: Aug

YEAR: 2007

Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8502311

Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Keywords Mesh Terms:

KEYWORDS: Time Factors

MESH TERMS: metabolism

Chemical & Substance for Abstract: Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance. Information

Substance Name: lipopolysaccharide, E. coli 026-B6

Registry Number: 0

Grant and Affiliation Information for Acute alcohol intake impairs lung inflammation by changing pro- and anti-inflammatory mediator balance.

AFFILIATION: Department of Internal Medicine, Division of Digestive Diseases, A.B. Chandler Medical Center, University of Kentucky, Lexington, KY 40536, USA. nbdsou0@uky.edu

Country: United States

AGENCY: United States NIAAA

GRANT: R01AA013168

ACRONYM: AA

MEDLINETA: Alcohol

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