4.7 Article

Short-term toxicity studies of loline alkaloids in mice

Journal

FOOD AND CHEMICAL TOXICOLOGY
Volume 94, Issue -, Pages 243-249

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2016.06.002

Keywords

Lolines; Toxicology; Sub-chronic feeding study; Endophyte; Epichloe

Funding

  1. New Zealand Ministry for Business, Innovation and Employment [C10X0807, C10X1403]
  2. Grasslanz Technology Ltd
  3. New Zealand Foundation for Arable Research
  4. Australian Grains Research and Development Corporation
  5. New Zealand Ministry of Business, Innovation & Employment (MBIE) [C10X1403, C10X0807] Funding Source: New Zealand Ministry of Business, Innovation & Employment (MBIE)

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Epichloe endophytes have been used successfully in pastoral systems to reduce the impact of insect pests through the expression of secondary metabolites. The use of endophytes could be extended to other plant species, such as cereal crops, where the production of bioactive secondary metabolites would reduce the reliance on pesticides for insect control. The success of this approach is dependent on the selection of an appropriate secondary metabolite target which must not only be effective against insect pests but also be safe for grazing and monogastric animals. The loline alkaloids have been identified as possible target metabolites as they are associated with potent effects on insects and low toxicity to grazing animals. The purpose of the current study was to generate toxicological data on the loline alkaloids in a monogastric system using mice. Male and female mice were fed 415 mg/kg/day total lolines for a 3-week period. The loline treatment caused no statistically significant effect on gross pathology, histology, haematology, blood chemistry, heart rate, blood pressure or motor coordination. Reduced weight gain and food consumption were noted in the loline groups during the initial stages of the experiment. This experiment raises no food safety concerns for the loline alkaloids. (C) 2016 Elsevier Ltd. All rights reserved.

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