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Chest, Vol 105, 1342-1346, Copyright © 1994 by American College of Chest Physicians

ARTICLES

Ultrastructural observation of Pneumocystis carinii in bronchoalveolar lavage fluid from non-AIDS patients with P carinii pneumonia

T Ishida, Y Matsui, Y Matsumura and M Furutani
Department of Internal Medicine, Kurashiki Central Hospital, Okayama, Japan.

To investigate the morphology of Pneumocystis carinii in vivo, we studied the ultrastructure of P carinii in bronchoalveolar lavage fluid (BALF) obtained from four non-AIDS patients with P carinii pneumonia (PCP), and observed the morphologic changes after treatment in one patient. Every form recognized in the normal life cycle of P carinii, ie, thick-walled cysts, crescent-shaped cysts, and trophozoites, was detected in the pretreatment BALF specimens. In the posttreatment BALF, P carinii revealed marked ultrastructural changes such as the elongation of thick-walled cysts, the degeneration of intracystic bodies, and the disappearance of trophozoites. Massive debris derived from P carinii was still found in the BALF even after the treatment. Examination of P carinii in BALF, including ultrastructural observations, might help us to evaluate the disease status and the effect of treatment in patients with PCP.


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A. NAHIMANA, D. S. BLANC, P. FRANCIOLI, J. BILLE, and P. M. HAUSER
Typing of Pneumocystis carinii f. sp. hominis by PCR-SSCP to indicate a high frequency of co-infections
J. Med. Microbiol., August 1, 2000; 49(8): 753 - 758.
[Abstract] [Full Text] [PDF]


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Copyright © 1994 by the American College of Chest Physicians.