Chlamydia infection and lymphomas: association beyond ocular adnexal lymphomas highlighted by multiple detection methods.
Clin Cancer Res
; 14(18): 5794-800, 2008 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-18794089
ABSTRACT
PURPOSE:
Chlamydia psittaci (Cp) has been associated to ocular adnexal lymphomas (OAL) with variable geographic distribution. Herein, we used multiple Chlamydia detection tools to identify Cp elementary bodies-containing cell and to assess Cp prevalence in both nodal and extranodal lymphomas. EXPERIMENTALDESIGN:
TETR-PCR, immunohistochemistry, immunofluorescence, electron microscopy, and laser-capture microdissection were done in 35 OALs to define their effect in Chlamydia detection and, moreover, to identify the Cp cellular carrier. Cp prevalence was screened by TETR-PCR in 205 extraorbital lymphomas and 135 nonneoplastic controls.RESULTS:
Twenty-six (74%) OALs were associated with Cp infection immunohistochemistry, immunofluorescence, and laser-capture microdissection-assisted PCR showed that monocytes/macrophages were the Cp carriers; electron microscopy showed the presence of intact Cp elementary bodies into these cells. Immunohistochemistry and TETR-PCR showed a 70% concordance rate (P = 0.001). Cp DNA was equally prevalent in non-OAL, nodal, and extranodal lymphomas among the latter, it was more common in diffuse large B-cell lymphomas of the skin (P = 0.03) and Waldeyer's ring.CONCLUSIONS:
This multiparametric approach shows, for the first time, that monocytes/macrophages are the carriers of Cp, Cp seems preferentially associated with lymphomas arising in organs primarily exposed to antigens. The clinical implications of these findings deserve to be prospectively investigated.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Infecciones por Chlamydia
/
Neoplasias del Ojo
/
Linfoma
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
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Risk_factors_studies
Límite:
Humans
Idioma:
En
Año:
2008
Tipo del documento:
Article