Association between skin surface pH, temperature and Staphylococcus pseudintermedius in dogs with immunomodulatory-responsive lymphocytic-plasmacytic pododermatitis

Secondary bacterial infection is a frequent complication in lesional skin of dogs with immunomodulatory‐responsive lymphocytic–plasmacytic pododermatitis (ImR‐LPP). However, the influence of skin pH and temperature in determining the composition of the cutaneous microflora at lesional sites has not...

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Published in:Veterinary dermatology 2011-08, Vol.22 (4), p.312-318
Main Authors: Breathnach, Rory M., Quinn, Patrick J., Baker, Kenneth P., McGeady, Thomas, Strobl, Eric, Abbott, Yvonne, Jones, Boyd R.
Format: Article
Language:English
Subjects:
Animals
Case-Control Studies
Dermatitis - complications
Dermatitis - veterinary
Dog Diseases - microbiology
Dog Diseases - pathology
Dogs
Female
Foot Dermatoses - complications
Foot Dermatoses - microbiology
Foot Dermatoses - veterinary
Hydrogen-Ion Concentration
Male
Skin Temperature
Staphylococcus
Staphylococcus - classification
Staphylococcus - isolation & purification
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Summary:Secondary bacterial infection is a frequent complication in lesional skin of dogs with immunomodulatory‐responsive lymphocytic–plasmacytic pododermatitis (ImR‐LPP). However, the influence of skin pH and temperature in determining the composition of the cutaneous microflora at lesional sites has not been investigated. The association between ImR‐LPP and pedal skin temperature, pH and Staphylococcus pseudintermedius isolates was thus evaluated. Temperature and pH were measured in 20 dogs with ImR‐LPP and in 30 clinically healthy control dogs, and S. pseudintermedius was cultured from interdigital and palmoplantar swabs in both groups and scored semi‐quantitatively for bacterial growth. In the ImR‐LPP group, mean skin pH was slightly, but significantly, higher at both interdigital and palmoplantar sites. Staphylococcus pseudintermedius was isolated more frequently, and scores for bacterial growth were also significantly higher. However, mean skin temperatures were not significantly different from those in the control group. The isolation of S. pseudintermedius was significantly associated with ImR‐LPP, with the single exception of isolates on Columbia blood agar from the palmoplantar region. However, pH and temperature were not significantly associated with the disease, and were not associated with the isolation of S. pseudintermedius at most sites sampled. Staphylococcus pseudintermedius was not isolated from all feet sampled in dogs with ImR‐LPP. Taken together, these data would suggest that S. pseudintermedius infection is most likely to be a secondary phenomenon in dogs with ImR‐LPP, and that changes in skin pH and temperature are not significant risk factors for this disease. Re´sume´ Une infection bactérienne secondaire est une complication fréquente chez les chiens atteints de pododermatite lymphoplasmocytaire répondant aux immunomodulateurs (ImR‐LPP). Cependant, l’influence du pH et de la température de la peau dans la composition de la microflore cutanée aux sites lésionnels n’a pas étéétudiée. Les associations entre ImR‐LPP et la température cutanée podale, le pH et les souches de Staphylococcus pseudintermedius présentes ont étéévaluées. La température et le pH ont été mesurés sur 20 chiens atteints de ImR‐LPP et 30 chiens contrôles cliniquement sains. S. pseudintermedius a été cultivéà partir d’écouvillons interdigités et palmoplantaires dans les deux groupes, la croissance bactérienne étant évaluée semi‐quantitativement. Dans le groupe ImR‐LPP, l
ISSN:0959-4493
1365-3164
DOI:10.1111/j.1365-3164.2010.00946.x