Title |
Expression of annexin A1 in Leishmania-infected skin and its correlation with histopathological features
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Published in |
Revista da Sociedade Brasileira de Medicina Tropical, October 2015
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DOI | 10.1590/0037-8682-0183-2015 |
Pubmed ID | |
Authors |
Helen Aguiar Lemes da Silva, Gabriel Silva de Lima, Mariana Côrtes Boité, Renato Porrozzi, Marcia Hueb, Amilcar Sabino Damazo |
Abstract |
The aim of this study was quantify annexin A1 expression in macrophages and cluster of differentiation 4 (CD4) + and cluster of differentiation 8 (CD8)+ T cells from the skin of patients with cutaneous leishmaniasis (n=55) and correlate with histopathological aspects. Infecting species were identified by polymerase chain reaction-restriction fragment length polymorphism, and expression of annexin A1 was analyzed by immunofluorescence. All patients (n = 55) were infected with Leishmania braziliensis . Annexin A1 was expressed more abundantly in CD163 + macrophages in infected skin (p < 0.0001) than in uninfected skin. In addition, macrophages in necrotic exudative reaction lesions expressed annexin A1 at higher levels than those observed in granulomatous (p < 0.01) and cellular lesions p < 0.05). This difference might be due to the need to clear both parasites and necrotic tissue from necrotic lesions. CD4 + cells in cellular lesions expressed annexin A1 more abundantly than did those in necrotic (p < 0.05) and granulomatous lesions (p < 0.01). Expression in CD8 + T cells followed the same trend. These differences might be due to the pervasiveness of lymphohistiocytic and plasmacytic infiltrate in cellular lesions. Annexin A1 is differentially expressed in CD163 + macrophages and T cells depending on the histopathological features of Leishmania -infected skin, which might affect cell activation. |
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 24 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 5 | 21% |
Student > Master | 5 | 21% |
Student > Ph. D. Student | 3 | 13% |
Student > Bachelor | 1 | 4% |
Student > Doctoral Student | 1 | 4% |
Other | 1 | 4% |
Unknown | 8 | 33% |
Readers by discipline | Count | As % |
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Immunology and Microbiology | 4 | 17% |
Agricultural and Biological Sciences | 3 | 13% |
Veterinary Science and Veterinary Medicine | 2 | 8% |
Social Sciences | 2 | 8% |
Chemical Engineering | 1 | 4% |
Other | 2 | 8% |
Unknown | 10 | 42% |