Publikationsdatenbank

Dose-dependent increase and decrease in active glucose uptake in jejunal epithelium of broilers after acute exposure to ethanol (2011)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Yunus, Agha Waqar

Awad, Wageha A

Kröger, Susan

Zentek, Jürgen

Böhm, Josef

Quelle

Alcohol : an international biomedical journal

Bandzählung: 45

Heftzählung: 4

Seiten: 411 – 414

ISSN: 0741-8329

Sprache

Englisch

Verweise

DOI: 10.1016/j.alcohol.2010.08.005

Pubmed: 20880658

Kontakt

Institut für Tierernährung

Königin-Luise-Str. 49
14195 Berlin
+49 30 838 52256
tierernaehrung@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Little is known about the effects of ethanol on gastrointestinal tract of chicken. In this study, we investigated the effects of low levels of ethanol on electrophysiological variables of jejunal epithelium of commercial broilers. Jejunal tissues from 35- to 39-day-old broilers were exposed to either 0 or 0.1% ethanol in Ussing chambers, and electrophysiological variables were monitored for 40 min. After 40 and 60 min of incubation, glucose (20 mM) and carbamoylcholine (200 μM), respectively, were introduced into the chambers. The absolute and percent increase in short-circuit current (Isc) and potential difference (Vt) induced by glucose were increased significantly with 0.1% ethanol. There was no significant effect of 0.1% ethanol on carbamoylcholine-induced electrophysiological variables. To investigate if higher levels of ethanol have similar effects, we tested the effects of 0, 0.33, and 0.66% ethanol under similar experimental conditions until the glucose-addition step. Contrary to 0.1% ethanol, both the 0.33 and 0.66% ethanol levels significantly decreased the basal and glucose-induced Isc and Vt. Tissue conductivity remained unaffected in all cases. These results indicate that intestinal epithelia of chicken may be more sensitive to the effects of ethanol as compared with other species. This is the first report indicating dose-dependent increase and decrease in active glucose absorption in intestinal epithelia in the presence of ethanol.