Difference between revisions of "Permethrin Toxicity"

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==Introduction==
 
==Introduction==
Permethrin is the active ingredient of many 'spot-on' paraciticides used in the control of fleas and ticks in dogs <ref name="multiples"> '''Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons information Service (VPIS), London''', ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>. In is also used in products intended for use in rats, mice, gerbils and guinea pigs <ref name="multiples">'''Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons information Service (VPIS), London''', ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>.  
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Permethrin is the active ingredient of many 'spot-on' paraciticides used in the control of fleas and ticks in dogs <ref name="multiples"> '''Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons information Service (VPIS), London''', ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>. In is also used in products intended for use in rats, mice, gerbils and guinea pigs <ref name="multiples">'''Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons information Service (VPIS), London''', ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>. Permethrin mediates its effects through modulation of voltage-sensitive sodium channels. <ref name="multiples"> Ray DE (1991)pesticides derived from plants and other organisms. In: Hayes WJ, Laws ER (eds), ''Handbook of Pesticide Toxicity, Classes of Pesticides''referenced in ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf
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==Treatment==
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The net result of this modulation is repetitive nerve firing, due to
 
==Signalment==
 
==Signalment==
 
Permethrin poisoning in most commonly seen in cats who have inadvertently been administered spot-on products intended for use in dogs, or who have had contact with dogs following application of the preparations <ref name="multiples"> '''BSAVA Manual of Canine and Feline Emergency and Critical Care''', Chapter 19, Second Edition, 2007 </ref>.  
 
Permethrin poisoning in most commonly seen in cats who have inadvertently been administered spot-on products intended for use in dogs, or who have had contact with dogs following application of the preparations <ref name="multiples"> '''BSAVA Manual of Canine and Feline Emergency and Critical Care''', Chapter 19, Second Edition, 2007 </ref>.  
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===Laboratory Tests===
 
===Laboratory Tests===
 
===Pathology===
 
===Pathology===
The spot-on canine preparations are often quite concentrated.<ref name="multiples"> '''BSAVA Manual of Canine and Feline Emergency and Critical Care''', Chapter 19, Second Edition, 2007 </ref>.  Cats lack the enzyme glucuronidase transferase <ref> Whittem 1995 Pyrethrin and pyrethroid insecticide intoxication in cats.''Compendium of Continuing Education for the Veterinary Practitioner'' '''17''' 489-492, referenced in ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref> and is therefore unable to utilise the metabolic pathway that dogs and other animals use to break down permethrin into glucuronides and sulphates <ref> Ray DE (1991)pesticides derived from plants and other organisms. In: Hayes WJ, Laws ER (eds), ''Handbook of Pesticide Toxicity, Classes of Pesticides''referenced in ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>
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The spot-on canine preparations are often quite concentrated.<ref name="multiples"> '''BSAVA Manual of Canine and Feline Emergency and Critical Care''', Chapter 19, Second Edition, 2007 </ref>.  Cats lack the enzyme glucuronidase transferase <ref> Whittem 1995 Pyrethrin and pyrethroid insecticide intoxication in cats.''Compendium of Continuing Education for the Veterinary Practitioner'' '''17''' 489-492, referenced in ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref> and is therefore unable to utilise the metabolic pathway that dogs and other animals use to break down permethrin into glucuronides and sulphates <ref name="multiples"> Ray DE (1991)pesticides derived from plants and other organisms. In: Hayes WJ, Laws ER (eds), ''Handbook of Pesticide Toxicity, Classes of Pesticides''referenced in ''Journal of Feline Medicine and Surgery''(2007)'''9''',335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 </ref>
 
==Treatment==
 
==Treatment==
 
==Prognosis==
 
==Prognosis==
 
==References==
 
==References==
 
<references/>
 
<references/>

Revision as of 19:59, 9 November 2010



Introduction

Permethrin is the active ingredient of many 'spot-on' paraciticides used in the control of fleas and ticks in dogs [1]. In is also used in products intended for use in rats, mice, gerbils and guinea pigs [1]. Permethrin mediates its effects through modulation of voltage-sensitive sodium channels. Cite error: Closing </ref> missing for <ref> tag.

Diagnosis

Clinical Signs

Laboratory Tests

Pathology

The spot-on canine preparations are often quite concentrated.[1]. Cats lack the enzyme glucuronidase transferase [2] and is therefore unable to utilise the metabolic pathway that dogs and other animals use to break down permethrin into glucuronides and sulphates [1]

Treatment

Prognosis

References

  1. 1.0 1.1 1.2 1.3 Clinical effects and outcome of feline permethrin spot-on poisonings reported to the Veterinary Poisons information Service (VPIS), London, Journal of Feline Medicine and Surgery(2007)9,335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010 Cite error: Invalid <ref> tag; name "multiples" defined multiple times with different content Cite error: Invalid <ref> tag; name "multiples" defined multiple times with different content Cite error: Invalid <ref> tag; name "multiples" defined multiple times with different content
  2. Whittem 1995 Pyrethrin and pyrethroid insecticide intoxication in cats.Compendium of Continuing Education for the Veterinary Practitioner 17 489-492, referenced in Journal of Feline Medicine and Surgery(2007)9,335-339 accessed on http://www.fabcats.org/esfm/permethrin.pdf 07.11.2010