4
Views
2
CrossRef citations to date
0
Altmetric
Original Article

Estudio sobre el valor diagnostico de la inmunofluorescencia indirecta en la aspergillosis pulmonar

, &
Pages 195-200 | Published online: 09 Jul 2009
 

Summary

A comparative study between indirect immunofluorescence technique (I.F.T.), complement fixation test (C.F.T.), agar gel immunodiffusion (I.D.) and agarose immunoelectrophoresis (I.E.P.), was carried out in 66 sera from mycologically and serologically proved cases of aspergillosis produced by Aspergillus fumigatus, 60 sera from normal individual, 14 from cases of paracoccidioidomycosis, 11 from histoplasmosis, 10 from systemic candidiasis, 10 from tuberculosis, 6 from cases of fibrosis of the lung, 4 from coccidioidomycosis and 2 from pulmonary aspergillosis produced by Aspergillus flavus.

Ninety-six per cent positive results (64/66) were obtained with the I.F.T. in the cases of aspergillosis (titers ranging from 1/20 to 1/640) and seventy-one per cent (47/66) gave positive results with the serum dilution of 1/80 or above. No correlation between titers registered with I.F.T. and those of the C.F.T. was proved. The 60 sera from normal individuals gave negative results with C.F.T., I.D. and I.E.P., 15% of non-specific positive results were obtained with the I.F.T. False positive reactions were observed with I.F.T. in 38 per cent of sera from patients with other pulmonary diseases or deep mycoses, including 2 cases of Aspergillosis of the lung due to A. flavus. The I.D., C.F.T. and I.E.P., showed high degree of sensitivity (97% or more) in the proved cases of aspergillosis and they did not give positive results in the control groups.

It seems that I.F.T. does not offer any advantage upon the other serological tests employed in aspergillosis since it is less specific and it is not more sensitive than the others. No difference between the serological pattern of intracavitary and allergic aspergillosis was noticed with the employed techniques.

Abstract

Se realizó un estudio serológico comparativo entre las reacciones de inmunofluorescencia indirecta (IFI), fijación de complemento (PFC), inmunodifusión en gel de agar (I.D.) e inmunoelectroforesis en gel de agarosa (I.E.F.), empleando 66 sueros de enfermos con aspergillosis pulmonar confirmada por Aspergillus fumigatus, 60 de sujetos clínicamente sanos, 14 con paracoccidioidomicosis, 11 con histoplasmosis, 10 con candidiasis sistémicas, 10 con tuberculosis, 6 de fibrosis pulmonares, 4 con coccidioidomicosis y 2 con aspergillosis producidas por A. flavus.—La IFI dió resultados positivos en el 96% de los pacientes con aspergillosis pulmonar confirmada (con títulos de 1/20 a 1/640) y el 71% de ellos presentaron títulos iguales o superiores a 1/80. No pudo establecerse correlación entre los títulos de la IFI y los obtenidos por la P.F.C.—La IFI proporcionó 15% de reacciones positivas inespecíficas en el grupo de personas normales y 38% en el de los pacientes afectados por otras micosis profundas o afecciones pulmonares, incluyendo los 2 casos de aspergillosis debida a A. flavus. Las reacciones de ID, PFC e IEF mostraron una alta sensibilidad, 97% o más de resultados positivos y no se observaron reacciones positivas falsas en ninguno de los grupos controles. Al parecer la IFI no ofrece mayores ventajas como elemento serológico de diagnóstico, pues es menos específica y no es más sensible que las restantes reacciones. No pudo establecerse ninguna diferencia en el comportamiento serológico entre los casos de aspergillosis intracavitaria y broncopulmonar alérgica.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.