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  • Title: Angiotensin II stimulates intake of ethanol in C57BL/6J mice.
    Author: Weisinger RS, Blair-West JR, Denton DA, McBurnie MI.
    Journal: Physiol Behav; 1999 Sep; 67(3):369-76. PubMed ID: 10497955.
    Abstract:
    The influence of intracerebroventricular (i.c.v.) infusion of angiotensin II on intake of water and ethanol solutions was determined in C57BL/6J mice. Compared to other mice, C57 mice do not show an aversion to ethanol solutions. With both water and ethanol solutions available, the C57 mice consumed 40-60% of their total daily fluid intake as ethanol solution when the concentration of ethanol solution offered was 4-14%. When given a choice between 0.3 M KCl and either 4 or 10% ethanol solution, the mice clearly preferred the ethanol solution. With water only available, i.c.v. infusion of angiotensin II increased intake from 3-5 mL/day (baseline) to 11-12 mL/ day (Day 4 of infusion). A similar increase in intake occurred in mice with access to a nonpreferred solution of 0.3 M KCl. In comparison, when only 4% ethanol solution was available, angiotensin II increased intake to 7-8 mL/day, and when only 10% ethanol solution was available, intake was transiently increased. The results demonstrated that thirst for water caused by i.c.v. infusion of angiotensin II in C57 mice is similar to that observed in BALB/C mice. Unlike BALB/C mice, however, i.c.v. infusion of angiotensin II stimulated intake of ethanol solution. The failure of angiotensin II to cause a large increase in 4% ethanol solution or a sustained increase in 10% ethanol solution intake does not seem to be caused by an aversion to the taste of ethanol solution, but most likely due to postingestional factors.
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