Laprie C, Duboy J, Malik R, Fyfe J.

Feline cutaneous mycobacteriosis: a review of clinical, pathological and molecular characterization of one case of Mycobacterium microti skin infection and nine cases of feline leprosy syndrome from France and New Caledonia.

Vet Dermatol. 2013 Sep 2. doi: 10.1111/vde.12066.
BACKGROUND: Ten cats with skin lesions characteristic of cutaneous mycobacteriosis were included in this retrospective clinical, pathological and molecular study.

HYPOTHESIS/OBJECTIVES: The aim of this study was to identify the causative agent and to compare the clinicopathological features of these cases with those of previous studies.
METHODS: Cats were from the south east of France (eight cases), central France (one case) and New Caledonia (South Pacific; one case). Criteria for inclusion were histological evidence of granulomatous dermatitis and/or panniculitis, with acid-fast bacilli within macrophages or extracellularly in regions of tissue necrosis. PCR targeting the 16S-23S internal transcribed spacer region and sequence analysis were performed using DNA extracted from formalin-fixed, paraffin-embedded tissues from all cases.
RESULTS: All cats were presented with a history of alopecic to ulcerated nodules. Most cases had limited disease, with one to few nodules, while others (three cats) showed a more aggressive clinical course. Lesions from eight cats yielded a sequence consistent with Mycobacterium lepraemurium, while Mycobacterium microti was identified postmortem from the cutaneous lesion in the cat originating from central France and euthanized for its debilitating condition. No PCR product could be amplified from the remaining specimen.
CONCLUSIONS AND CLINICAL IMPORTANCE: Based on this geographically restricted case series, feline leprosy in southern France is most likely to be caused by M. lepraemurium and presents as a generally self-limiting disease. Molecular testing is essential to assess zoonotic potential, because M. microti-induced cutaneous mycobacteriosis can resemble feline leprosy syndrome.


C. Lapriea, J. Duboya et J. Martinezb

Coronavirose systémique chez le furet (Mustela putorius) : intérêt de l’analyse histologique et immunohistochimique. À propos de trois cas.

Pratique Médicale et Chirurgicale de l'Animal de Compagnie Volume 44, Issue 4, Octobre-Decembre 2009, Pages 111-115 


aLaboratoire Vet-Histo, 11 bis, boulevard Miremonts, 13008 Marseille, France

bHistologia I Anatomia Patologica, Facultat de Veterinaria, Universitat Autonoma de Barcelona, Bellaterra, 08193 Barcelona, Espagne 


Contexte : Une nouvelle coronavirose a été décrite chez le furet, notamment en Espagne et aux États-Unis, induite par un Coronavirus du groupe 1, proche du Coronavirus responsable de l’entérite catarrhale enzootique et à l’origine de lésions histologiques similaires à celle de la péritonite infectieuse féline (PIF) dans l’espèce féline.

Objectif : Démontrer l’origine virale de lésions pyogranulomateuses sévères au sein de tissus lymphoïdes ou viscéraux de trois furets.

Méthodes : Analyse histologique et immunohistochimique de lésions reçues au laboratoire suite à des autopsies ou des laparotomies exploratrices pratiquées par des vétérinaires.

Résultats : L’analyse histologique révèle une inflammation pyogranulomateuse multicentrique, touchant préférentiellement les nœuds lymphatiques abdominaux et différents organes abdominaux. L’analyse immunohistochimique permet la mise en évidence d’antigènes viraux de Coronavirus en position intramacrophagique au sein de lésions pyogranulomateuses ganglionnaires.

Conclusion : Ces trois cas d’inflammation pyogranulomateuse multicentrique sont dus à une coronavirose qui présente de nombreux points de ressemblance avec la PIF.


Rivierre C, Laprie C, Guiard-Marigny O, Bergeaud P, Berthelemy M, Guillot J.

Pythiosis in Africa.

Emerg Infect Dis. 2005 Mar;11(3):479-81.

We report the first case of pythiosis from Africa in an 8-month-old dog with a chronic and ulcerative cutaneous lesion. The etiologic agent belonged to the genus Pythium. Phylogenetic analysis placed the isolate in a sister group to the other P. insidiosum strains. However, the isolate may belong to a new Pythium species.

Laprie C, Abadie J, Amardeilh MF, Net JL, Lagadic M, Delverdier M.



MIB-1 immunoreactivity correlates with biologic behaviour in canine cutaneous melanoma.


Vet Dermatol. 2001 Jun;12(3):139-47.


The growth fraction of 68 canine cutaneous melanomas was determined by immunostaining with MIB-1, a monoclonal antibody to a Ki-67 epitope that recognizes all proliferating cells. Fifty tumours were classified histologically as benign and 18 as malignant. The Ki-67 proliferative index (percentage of positive cells over 500 neoplastic cells) was low (< 15%) in 55 cases and high (> or = 15%) in 13 cases. High Ki-67 proliferative index and histological malignancy were both associated with significantly poorer 2-year survival (P < 0.0001). However, the predictive value of the Ki-67 proliferative index (97%) was higher than the predictive value of classical histology (91%). The evaluation of the growth fraction by the Ki-67 proliferative index is highly predictive of the biological behaviour of canine cutaneous melanoma. 
Réalisé et hébergé par avec  Zizaoo