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Journal of Clinical Microbiology, 07 1996, 1831-1833, Vol 34, No. 7
JM Costa, R Durand, M Deniau, D Rivollet, M Izri, R Houin, M Vidaud and S Bretagne
A PCR enzyme-linked immunosorbent assay (ELISA) involving the use of bone
marrow aspirates (BMA) and blood samples (BS) for the diagnosis of visceral
leishmaniasis (VL) in human immunodeficiency virus-infected patients was
developed with primers selected from the sequence of the small-subunit rRNA
gene and compared with direct examination and in vitro cultivation. The PCR
was optimized for routine diagnosis: processing of samples with lysis of
erythrocytes without isolation of leukocytes, enzymatic prevention of
contamination, internal control of the reaction, and ELISA testing in a
microtitration plate hybridization. Of 79 samples (33 BMA and 46 BS) from
77 patients without VL, all the results were negative. Fifty-three samples
(9 BMA and 44 BS) were obtained from 13 patients with VL: 6 samples drawn
during anti-Leishmania treatment were negative whatever the technique used,
and 47 samples (9 BMA and 38 BS) were positive with at least one technique.
The sensitivities were 51% (24 of 47), 81% (38 of 47), and 98% (46 of 47)
for direct examination, culture, and PCR, respectively. Thus, PCR ELISA is
reliable for diagnosing VL in human immunodeficiency virus-infected
patients, and blood sampling should be sufficient for the follow-up.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
PCR enzyme-linked immunosorbent assay for diagnosis of leishmaniasis in human immunodeficiency virus-infected patients
Laboratoire de Biologie Moleculaire Marcel Dassault, Hopital americain de Paris, Neuilly sur Seine, France.
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