Claw histopathology and parasitic load in natural cases of canine leishmaniosis associated with Leishmania infantum

被引:10
|
作者
Koutinas, Alexander F. [1 ]
Carlotti, Didier N. [2 ]
Koutinas, Christos [1 ]
Papadogiannakis, Emmanouil I. [3 ]
Spanakos, Gregory K. [4 ]
Saridomichelakis, Manolis N. [5 ]
机构
[1] Aristotles Univ Thessaloniki, Dept Clin Studies, Fac Vet Med, GR-54627 Thessaloniki, Greece
[2] Vet Dermatol Clin, Bordeaux, France
[3] Natl Sch Publ Hlth, Dept Vet Publ Hlth, Athens, Greece
[4] Natl Sch Publ Hlth, Dept Parasitol Entomol & Trop Dis, Athens, Greece
[5] Univ Thessaly, Med Clin, Sch Vet Med, Kardhitsa, Greece
关键词
SYMMETRICAL LUPOID ONYCHODYSTROPHY; DOGS; DIAGNOSIS; DISEASE;
D O I
10.1111/j.1365-3164.2009.00863.x
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Histological lesions and the presence of Leishmania spp. amastigotes in claw tissues were investigated in 40 dogs with leishmaniosis, with (16/40 - group A) or without (24/40 - group B) generalized onychogryphosis. Following euthanasia, the entire third phalanx with intact claw was amputated, formalin fixed, decalcified in a formic acid solution, embedded in paraffin, sectioned longitudinally and stained with haematoxylin and eosin, and acid orcein-Giemsa. Nested polymerase chain reaction (PCR) was used for the detection of Leishmania amastigotes. Lichenoid mononuclear infiltration (all dogs in group A, 21 of 24 dogs in group B), basal keratinocyte vacuolation (nine of 16 dogs in group A, 15 of 24 dogs in group B) and dermoepidermal clefting (13 of 16 dogs in group A, 18 of 24 dogs in group B) were the most prominent histopathological findings. There was no difference in the frequency and severity of these lesions between the two groups. Leishmania amastigotes could not be visualized in the dermis of any of the H&E sections, but their presence was demonstrated by nested PCR in three of 16 dogs in group A and two of 24 dogs in group B. However, the frequency of positive nested PCRs was not significantly different between the two groups. In conclusion, claw histopathology in symptomatic dogs with leishmaniosis, either with or without onychogryphosis is mainly characterized by mononuclear lichenoid dermatitis with or without interface dermatitis and dermoepidermal clefting, and is not accompanied by substantial local parasitism.
引用
收藏
页码:572 / 577
页数:6
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