Lethal Sycamore maple intoxication in a grazing three-month-old foal

N Janzen; J Sander; M Terhardt; M Mallek; H Smith; P Witt; M J P Theelen

doi:10.1016/j.jevs.2025.105713

Lethal Sycamore maple intoxication in a grazing three-month-old foal

N Janzen^*
, J Sander
, M Terhardt
, M Mallek
, H Smith
, P Witt
, M J P Theelen

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The case of a young foal poisoned by maple toxin is described. It showed signs of myopathy caused by ingesting life-threatening amounts of maple toxin. Some maple trees (Acer species) can pose a health risk to grazing horses. The leaves, seeds and shoots contain hypoglycin A (HGA) and methylencyclopropylglycine (MCPRG) and can cause life-threatening atypical myopathy.

Original language	English
Article number	105713
Number of pages	4
Journal	Journal of Equine Veterinary Science
Volume	155
Early online date	30 Oct 2025
DOIs	https://doi.org/10.1016/j.jevs.2025.105713
Publication status	Published - Dec 2025

Bibliographical note

Keywords

Atypical myopathy
Grazing of foals
Horse breeding
Hypoglycin A
Sapindaceae toxins

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jevs.2025.105713Licence: CC BY

Lethal Sycamore maple intoxication in a grazing three-month-old foalFinal published version, 420 KBLicence: CC BY

Cite this

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title = "Lethal Sycamore maple intoxication in a grazing three-month-old foal",

abstract = "The case of a young foal poisoned by maple toxin is described. It showed signs of myopathy caused by ingesting life-threatening amounts of maple toxin. Some maple trees (Acer species) can pose a health risk to grazing horses. The leaves, seeds and shoots contain hypoglycin A (HGA) and methylencyclopropylglycine (MCPRG) and can cause life-threatening atypical myopathy.",

keywords = "Atypical myopathy, Grazing of foals, Horse breeding, Hypoglycin A, Sapindaceae toxins",

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AU - Janzen, N

AU - Sander, J

AU - Terhardt, M

AU - Mallek, M

AU - Smith, H

AU - Witt, P

AU - Theelen, M J P

PY - 2025/12

Y1 - 2025/12

N2 - The case of a young foal poisoned by maple toxin is described. It showed signs of myopathy caused by ingesting life-threatening amounts of maple toxin. Some maple trees (Acer species) can pose a health risk to grazing horses. The leaves, seeds and shoots contain hypoglycin A (HGA) and methylencyclopropylglycine (MCPRG) and can cause life-threatening atypical myopathy.

AB - The case of a young foal poisoned by maple toxin is described. It showed signs of myopathy caused by ingesting life-threatening amounts of maple toxin. Some maple trees (Acer species) can pose a health risk to grazing horses. The leaves, seeds and shoots contain hypoglycin A (HGA) and methylencyclopropylglycine (MCPRG) and can cause life-threatening atypical myopathy.

KW - Atypical myopathy

KW - Grazing of foals

KW - Horse breeding

KW - Hypoglycin A

KW - Sapindaceae toxins

U2 - 10.1016/j.jevs.2025.105713

DO - 10.1016/j.jevs.2025.105713

M3 - Article

C2 - 41176075

SN - 0737-0806

VL - 155

JO - Journal of Equine Veterinary Science

JF - Journal of Equine Veterinary Science

M1 - 105713

ER -

Lethal Sycamore maple intoxication in a grazing three-month-old foal

Abstract

Bibliographical note

Keywords

UN SDGs

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