alexa 90-Day oral toxicity study of D-tagatose in rats.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Developing Drugs

Author(s): Kruger CL, Whittaker MH, Frankos VH, Trimmer GW

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Abstract D-tagatose is a ketohexose, tastes like sugar and is useful as a low-calorie sweetener. To assess D-tagatose's safety, an oral 90-day toxicity study was conducted on male and female Crl:CDBR rats at dietary doses of 5, 10, 15, and 20\% D-tagatose. One control group (dietary control) received only lab chow; a second control group received 20\% cellulose/fructose in the diet. There were no treatment-related effects at 5\% D-tagatose in the diet. At higher doses, treatment-related effects included transient soft stools in male and female animals from the 15 and 20\% dose groups. This was anticipated as a result of the osmotic effect of a large dose of relatively undigested sugar and was not considered a toxic effect. All treatment groups gained weight over the study period; however, mean body weights were statistically significantly decreased in the 15 and 20\% dose-group males and the 20\% dose-group females at selected intervals compared to dietary control animals. No significant reduction in mean food consumption was noted in the treatment groups compared to the dietary control. Statistically significantly increased relative liver weights were noted in male and female animals from the 10, 15, and 20\% dose groups compared to the dietary control. No gross pathological findings correlated with these increased liver weights. Minimal hepatocellular hypertrophy was observed in male and female animals from the 15 and 20\% dose groups. An independent review of the liver slides concluded that histomorphologic changes associated with D-tagatose were restricted hepatocyte hypertrophy and hepatocyte glycogen accumulation. Therefore, it was concluded that increased liver weights and minimal hypertrophy were the result of adaptation to the high dietary levels (greater than 5\% in the diet) of D-tagatose. No adverse effects were seen at 5\% D-tagatose in the diet. Copyright 1999 Academic Press. This article was published in Regul Toxicol Pharmacol and referenced in Journal of Developing Drugs

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