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Black locust (Robinia pseudoacacia) intoxication as a suspected cause of transient hyperammonaemia and enteral encephalopathy in a pony

Katleen Vanschandevijl (UGent) , Gunther van Loon (UGent) , Laurence Lefère (UGent) and Piet Deprez (UGent)
(2010) Equine Veterinary Education. 22(7). p.336-339
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Abstract
Two ponies presented with mild abdominal pain and mild diarrhoea one hour after ingestion of roots of a black locust tree. On admission, symptoms had progressed to depression, weakness and the passing of dark, firm faeces. Treatment was symptomatic and supportive, aiming at the evacuation of the toxin from the gastrointestinal tract. One pony developed severe, reversible neurological signs associated with transient hyperammonaemia in the absence of liver disease. After 24 h the ammonia level returned to normal and central nervous signs disappeared. Both ponies recovered completely. This report describes the ingestion of black locust closely followed by the development of central nervous signs and hyperammonaemia. Increased ammonia absorption due to the intestinal wall inflammation caused by the toxins of the black locust tree, as well as increased ammonia production by enteric bacteria is therefore considered a plausible pathophysiological mechanism of the neurological signs displayed in black locust intoxication
Keywords
horse, hyperammonaemia, enteral encephalopathy, intoxication, Robinia pseudoacacia

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Chicago
Vanschandevijl, Katleen, Gunther van Loon, Laurence Lefère, and Piet Deprez. 2010. “Black Locust (Robinia Pseudoacacia) Intoxication as a Suspected Cause of Transient Hyperammonaemia and Enteral Encephalopathy in a Pony.” Equine Veterinary Education 22 (7): 336–339.
APA
Vanschandevijl, K., van Loon, G., Lefère, L., & Deprez, P. (2010). Black locust (Robinia pseudoacacia) intoxication as a suspected cause of transient hyperammonaemia and enteral encephalopathy in a pony. Equine Veterinary Education, 22(7), 336–339.
Vancouver
1.
Vanschandevijl K, van Loon G, Lefère L, Deprez P. Black locust (Robinia pseudoacacia) intoxication as a suspected cause of transient hyperammonaemia and enteral encephalopathy in a pony. Equine Veterinary Education. Equine Veterinary Journal Ltd.; 2010;22(7):336–9.
MLA
Vanschandevijl, Katleen et al. “Black Locust (Robinia Pseudoacacia) Intoxication as a Suspected Cause of Transient Hyperammonaemia and Enteral Encephalopathy in a Pony.” Equine Veterinary Education 22.7 (2010): 336–339. Print.
@article{988849,
  abstract     = {Two ponies presented with mild abdominal pain and mild
diarrhoea one hour after ingestion of roots of a black locust
tree. On admission, symptoms had progressed to
depression, weakness and the passing of dark, firm faeces.
Treatment was symptomatic and supportive, aiming at the
evacuation of the toxin from the gastrointestinal tract. One
pony developed severe, reversible neurological signs
associated with transient hyperammonaemia in the
absence of liver disease. After 24 h the ammonia level
returned to normal and central nervous signs disappeared.
Both ponies recovered completely. This report describes
the ingestion of black locust closely followed by
the development of central nervous signs and
hyperammonaemia. Increased ammonia absorption due
to the intestinal wall inflammation caused by the toxins of
the black locust tree, as well as increased ammonia
production by enteric bacteria is therefore considered
a plausible pathophysiological mechanism of the
neurological signs displayed in black locust intoxication},
  author       = {Vanschandevijl, Katleen and van Loon, Gunther and Lefère, Laurence and Deprez, Piet},
  issn         = {0957-7734},
  journal      = {Equine Veterinary Education},
  keywords     = {horse,hyperammonaemia,enteral encephalopathy,intoxication,Robinia pseudoacacia},
  language     = {eng},
  number       = {7},
  pages        = {336--339},
  publisher    = {Equine Veterinary Journal Ltd.},
  title        = {Black locust (Robinia pseudoacacia) intoxication as a suspected cause of transient hyperammonaemia and enteral encephalopathy in a pony},
  url          = {http://dx.doi.org/10.1111/j.2042-3292.2010.00090.x},
  volume       = {22},
  year         = {2010},
}

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