Use of artificial sweeteners to promote alcohol consumption by rats.
Study Goal
The researchers aimed to determine whether artificial sweeteners (aspartame, saccharin, cyclamate) could effectively replace sucrose in alcohol solutions to achieve adequate alcohol intake and desired hepatic effects in rats.
Results Summary
Artificial sweeteners led to reasonable alcohol intake (5-6 g/kg/day) and hepatic fibrosis but did not reliably produce cirrhosis. Only one rat (aspartame group) developed cirrhosis, while others showed varying degrees of fibrosis without significant differences among treatments.
Population
Rats exposed to carbon tetrachloride vapor and fed alcohol in drinking water.
Effective Dosage
Aspartame (0.025%), saccharin (0.025%), cyclamate (0.05%) in alcohol (8% v/v) solution.
Duration
14 weeks (5 nights/week, 6 hours/night).
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
exposing rats intermittently to low levels of carbon tetrachloride vapour while feeding alcohol in the Lieber-DeCarli liquid diet | increase | cirrhosis | rats | - | may be reliably produced | #1 |
providing alcohol in drinking water sweetened with sucrose | no change | reliable results | - | - | does not yield | #2 |
alcohol in drinking water sweetened with artificial sweeteners | increase | desired hepatic effects | - | - | would give adequate alcohol intake to achieve | #3 |
alcohol (8% v/v) in drinking water sweetened with sucrose (5% w/v) | increase | alcohol intakes | rats | 5-6 g/kg/day | achieved | #4 |
alcohol in drinking water sweetened with aspartame (0.025%), saccharin (0.025%) or cyclamate (0.05%) | increase | alcohol intakes | rats | 5-6 g/kg/day | achieved | #5 |
alcohol treatment with exposure to carbon tetrachloride vapour, 40 ppm, six hours per night for five nights per week, over a period of 14 weeks | increase | cirrhotic | one rat in the aspartame group | - | became | #6 |
alcohol treatment with exposure to carbon tetrachloride vapour, 40 ppm, six hours per night for five nights per week, over a period of 14 weeks | increase | varying degrees of fibrosis | all the others | - | had | #7 |
alcohol treatment with exposure to carbon tetrachloride vapour, 40 ppm, six hours per night for five nights per week, over a period of 14 weeks | no change | fibrosis | rats | - | did not differ significantly among the treatments | #8 |
sweetening the alcohol solution with artificial sweeteners | increase | reasonable alcohol intakes | - | - | led to | #9 |
sweetening the alcohol solution with artificial sweeteners | increase | hepatic fibrosis | - | - | led to | #10 |
sweetening the alcohol solution with artificial sweeteners | decrease | high carbohydrate intake | - | - | without | #11 |
Cirrhosis may be reliably produced in rats by exposing them intermittently to low levels of carbon tetrachloride vapour while feeding alcohol in the Lieber-DeCarli liquid diet. Providing the alcohol in drinking water that has been sweetened with sucrose is a cheaper and more convenient method but it does not yield reliable results. This study aimed to determine whether alcohol in drinking water sweetened with artificial sweeteners would give adequate alcohol intake to achieve the desired hepatic effects. Rats were fed alcohol (8% v/v) in drinking water sweetened with sucrose (5% w/v) (n = 12), or with one of the artificial sweeteners aspartame (0.025%), saccharin (0.025%) or cyclamate (0.05%) (n = 8 per agent). During the alcohol treatment the animals were exposed to carbon tetrachloride vapour, 40 ppm, six hours per night for five nights per week, over a period of 14 weeks. All groups achieved good alcohol intakes of 5-6 g/kg/day. Only one rat, in the aspartame group, became cirrhotic; all the others had varying degrees of fibrosis which did not differ significantly among the treatments. Although it was not effective in reliably achieving cirrhosis, sweetening the alcohol solution with artificial sweeteners led to reasonable alcohol intakes with resultant hepatic fibrosis, and without the high carbohydrate intake which occurs when sucrose is used.