Skin lesions associated with lysine deficiency in kittens are characterized by inflammation

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Abstract

Processing substantially reduces the bioavailability of lysine in pet foods, and certain populations of cats may be at risk for deficiency. A previous study reported that kittens consuming lysine deficient diets developed facial skin lesions; however these were not characterized with histopathology. The hypothesis of this study was that kittens with lysine deficiency develop histopathologically distinct skin lesions. Twelve, male, 7-to-9 week old, healthy kittens were fed diets either replete (16 g/kg) or deficient in lysine (4 g/kg) in a prospective, controlled feeding trial for 1 week. Standard skin biopsies were examined in a blinded fashion. Plasma was analyzed for amino acid concentrations. The median average daily gain of the control and test group kittens was 37.8 g (range 23.8 to 40.3) and 0.8 g (range -12.7 to 7; p < 0.05), respectively. Five kittens in the test group (5/8; 62.5%) and one in the control group (1/4; 25%) developed facial lesions with dark adherent crusting near the dorsal nasal planum, chin, and/or adjacent to the philtrum. Histopathologic examination revealed superficial and deep perivascular pleocellular dermatitis with mild acanthosis, hyperkeratosis, intra-epidermal pustules, superficial folliculitis, and furuncles. There was no difference in plasma lysine concentrations between groups (p = 0.064). Histopathologic characterization of facial skin lesions suspected to be associated with lysine deficiency in kittens were not consistent with other dermatological diseases, and were not associated with decreased plasma lysine concentrations.

Original languageEnglish (US)
Pages (from-to)66-71
Number of pages6
JournalInternational Journal of Applied Research in Veterinary Medicine
Volume12
Issue number1
StatePublished - 2014

Fingerprint

kittens
skin lesions
Lysine
lysine
inflammation
Inflammation
Skin
Furunculosis
Folliculitis
Diet
pet foods
hyperkeratosis
Chin
Control Groups
Temazepam
Pets
Dermatitis
dermatitis
Lip
Nose

Keywords

  • Deficiency
  • Dietary lysine
  • Feline
  • Growth
  • Histopathology
  • Skin lesions

ASJC Scopus subject areas

  • veterinary(all)

Cite this

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title = "Skin lesions associated with lysine deficiency in kittens are characterized by inflammation",
abstract = "Processing substantially reduces the bioavailability of lysine in pet foods, and certain populations of cats may be at risk for deficiency. A previous study reported that kittens consuming lysine deficient diets developed facial skin lesions; however these were not characterized with histopathology. The hypothesis of this study was that kittens with lysine deficiency develop histopathologically distinct skin lesions. Twelve, male, 7-to-9 week old, healthy kittens were fed diets either replete (16 g/kg) or deficient in lysine (4 g/kg) in a prospective, controlled feeding trial for 1 week. Standard skin biopsies were examined in a blinded fashion. Plasma was analyzed for amino acid concentrations. The median average daily gain of the control and test group kittens was 37.8 g (range 23.8 to 40.3) and 0.8 g (range -12.7 to 7; p < 0.05), respectively. Five kittens in the test group (5/8; 62.5{\%}) and one in the control group (1/4; 25{\%}) developed facial lesions with dark adherent crusting near the dorsal nasal planum, chin, and/or adjacent to the philtrum. Histopathologic examination revealed superficial and deep perivascular pleocellular dermatitis with mild acanthosis, hyperkeratosis, intra-epidermal pustules, superficial folliculitis, and furuncles. There was no difference in plasma lysine concentrations between groups (p = 0.064). Histopathologic characterization of facial skin lesions suspected to be associated with lysine deficiency in kittens were not consistent with other dermatological diseases, and were not associated with decreased plasma lysine concentrations.",
keywords = "Deficiency, Dietary lysine, Feline, Growth, Histopathology, Skin lesions",
author = "Larsen, {Jennifer A} and Outerbridge, {Catherine A} and Fascetti, {Andrea J} and Affolter, {Verena K}",
year = "2014",
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TY - JOUR

T1 - Skin lesions associated with lysine deficiency in kittens are characterized by inflammation

AU - Larsen, Jennifer A

AU - Outerbridge, Catherine A

AU - Fascetti, Andrea J

AU - Affolter, Verena K

PY - 2014

Y1 - 2014

N2 - Processing substantially reduces the bioavailability of lysine in pet foods, and certain populations of cats may be at risk for deficiency. A previous study reported that kittens consuming lysine deficient diets developed facial skin lesions; however these were not characterized with histopathology. The hypothesis of this study was that kittens with lysine deficiency develop histopathologically distinct skin lesions. Twelve, male, 7-to-9 week old, healthy kittens were fed diets either replete (16 g/kg) or deficient in lysine (4 g/kg) in a prospective, controlled feeding trial for 1 week. Standard skin biopsies were examined in a blinded fashion. Plasma was analyzed for amino acid concentrations. The median average daily gain of the control and test group kittens was 37.8 g (range 23.8 to 40.3) and 0.8 g (range -12.7 to 7; p < 0.05), respectively. Five kittens in the test group (5/8; 62.5%) and one in the control group (1/4; 25%) developed facial lesions with dark adherent crusting near the dorsal nasal planum, chin, and/or adjacent to the philtrum. Histopathologic examination revealed superficial and deep perivascular pleocellular dermatitis with mild acanthosis, hyperkeratosis, intra-epidermal pustules, superficial folliculitis, and furuncles. There was no difference in plasma lysine concentrations between groups (p = 0.064). Histopathologic characterization of facial skin lesions suspected to be associated with lysine deficiency in kittens were not consistent with other dermatological diseases, and were not associated with decreased plasma lysine concentrations.

AB - Processing substantially reduces the bioavailability of lysine in pet foods, and certain populations of cats may be at risk for deficiency. A previous study reported that kittens consuming lysine deficient diets developed facial skin lesions; however these were not characterized with histopathology. The hypothesis of this study was that kittens with lysine deficiency develop histopathologically distinct skin lesions. Twelve, male, 7-to-9 week old, healthy kittens were fed diets either replete (16 g/kg) or deficient in lysine (4 g/kg) in a prospective, controlled feeding trial for 1 week. Standard skin biopsies were examined in a blinded fashion. Plasma was analyzed for amino acid concentrations. The median average daily gain of the control and test group kittens was 37.8 g (range 23.8 to 40.3) and 0.8 g (range -12.7 to 7; p < 0.05), respectively. Five kittens in the test group (5/8; 62.5%) and one in the control group (1/4; 25%) developed facial lesions with dark adherent crusting near the dorsal nasal planum, chin, and/or adjacent to the philtrum. Histopathologic examination revealed superficial and deep perivascular pleocellular dermatitis with mild acanthosis, hyperkeratosis, intra-epidermal pustules, superficial folliculitis, and furuncles. There was no difference in plasma lysine concentrations between groups (p = 0.064). Histopathologic characterization of facial skin lesions suspected to be associated with lysine deficiency in kittens were not consistent with other dermatological diseases, and were not associated with decreased plasma lysine concentrations.

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