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Case Reports
. 2018 Sep;32(5):1768-1772.
doi: 10.1111/jvim.15236. Epub 2018 Sep 14.

Newborn foal with atypical myopathy

Affiliations
Case Reports

Newborn foal with atypical myopathy

Radana Karlíková et al. J Vet Intern Med. 2018 Sep.

Abstract

The case of atypical myopathy (AM) in newborn Haflinger foal with clinical signs of depression and weakness appearing 6 hours after birth resulting in recumbency 12 hours after birth is described. The foal's dam was diagnosed with AM in the 6th month of gestation based on clinical signs of a myopathy, elevated serum activity of creatine kinase, metabolomic analysis and the presence of methylenecyclopropyl acetyl carnitine (MCPA-carnitine) in the blood. At the time of delivery, the mare was grazing on a pasture near sycamore trees but was free of clinical signs of AM. Metabolomic analysis of the foal's blood revealed increased concentrations of acylcarnitines and MCPA-carnitine consistent with metabolic profiles of blood from AM affected horses. Two theories could explain this observation (a) hypoglycin A or its metabolites accumulated in the mare's placenta with consequent transfer to fetus or (b) these compounds were secreted into mare's milk.

Keywords: acylcarnitines; hypoglycin A; metabolomics; methylenecyclopropyl acetyl carnitine; multiple acyl-coenzyme A dehydrogenase deficiency.

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Figures

Figure 1
Figure 1
A, Principal component analysis score plot of horses with AM (green triangles), affected foal (red triangle), and controls (adult horses: blue squares; foals: pink squares); B, Boxplots of acylcarnitines in blood of horses with AM (green triangles), affected foal (red triangle) and controls (adult horses: blue squares; foals: pink squares)

References

    1. Valberg SJ, Sponseller BT, Hegeman AD, et al. Seasonal pasture myopathy/atypical myopathy in North America associated with ingestion of hypoglycin A within seeds of the box elder tree. Equine Vet J. 2013;45:419‐426. - PubMed
    1. Votion DM, van Galen G, Sweetman L, et al. Identification of methylenecyclopropyl acetic acid in serum of European horses with atypical myopathy. Equine Vet J. 2014;46:146‐149. - PubMed
    1. Unger L, Nicholson A, Jewitt EM, et al. Hypoglycin A concentrations in seeds of Acer pseudoplatanus trees growing on atypical myopathy‐affected and control pastures. J Vet Intern Med. 2014;28:1289‐1293. - PMC - PubMed
    1. Westermann CM, van Leeuwen R, van Raamsdonk LW, Mol HG. Hypoglycin A concentrations in maple tree species in the Netherlands and the occurrence of atypical myopathy in horses. J Vet Intern Med. 2016;30:880‐884. - PMC - PubMed
    1. Lai MT, Li D, Oh E, Liu HW. Inactivation of medium‐chain acyl‐coA dehydrogenase by a metabolite of hypoglycin: Characterization of the major turnover product and evidence suggesting an alternative flavin modification pathway. J Am Chem Soc. 1993;115:1619‐1628.

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