Mycopathologia et mycologia applicata

, Volume 40, Issue 2, pp 183–191 | Cite as

Particularites de l'infestation adiaspiromycosique par Emmonsia crescens Emmons et Jellison, 1960 chez Pitymys subterraneus (De Selys-Longchamps 1836) et Mustela nivalis nivalis L. 1766

  • M. T. Boisseau-Lebreuil
Article

Résumé

Nous avons observé dans les poumons de 15Pitymys subterraneus et de 1Mustela nivalis nivalis des adiaspores relativement petites de 85 µ de diamètre en moyenne. Nous pensons cependant que ce sont des adiaspores d'Emmonsia crescensEmmons &Jellison, (1960) car:
  1. 1)

    elles germent en émettant de nombreux tubes mycéliens.

     
  2. 2)

    les caractères morphologiques macroscopiques et microscopiques de leur phase mycélienne sont identiques à ceux de plusieurs souches d'E. crescens.

     
  3. 3)

    la phase mycélienne se reconvertit totalement en phase levure, a 37°, sur “Brain Heart Agar” Difco.

     
  4. 4)

    la souche isolée d'unP. subterraneus, inoculée à des souris blanches, à des campagnols roussâtres et agreste donne, dans leurs poumons respectifs, de grosses adiaspores, typiques d'E. crescens.

     
  5. 5)

    d'un point de vue épidémiologique, il est difficile de concevoir une cohabitation aussi étroite de deux espèces, classiquement non spécifiques, chacune ayant ses hôtes propres.

     

Abstract

From the observation of some hundred lungs of small wild mammals in France, we have found two types of parasitism byEmmonsia crescensEmmons &Jellison, (1960). In most species, for example inApodemus sylvaticus andClethrionomys glareolus, the adiaspores ranged from 200 to 475 µ in diameter, their cell walls are 28 µ in average thickness and they cause a weak histological reaction in the parenchyma of the lungs. InPitymys subterraneus, the adiaspores are always much smaller, about 85 µ. They have a thin cell wall, 4 µ, and are surrounded by a strong histological reaction, the thickness of which ranges from 130 to 140 µ. The adiaspores observed inMustela nivalis nivalis are still smaller, about 70 µ, and they provoke a pulmonary reaction a hundred µ thick.

However, we think that these small adiaspores belong to the speciesEmmonsia crescensEmmons &Jellison, (1960):
  1. 1)

    they germinate springing many mycelian tubes.

     
  2. 2)

    the macroscopic and microscopic morphological characteristics of the mycelian phase are identical to those of several strains ofEmmonsia crescens.

     
  3. 3)

    the mycelian phase completely turns into the yeast phase at 37° C on “Brain Heart Agar” Difco.

     
  4. 4)

    a strain isolated from aP. subterraneus, inoculated to a white mice, a bank vole or a field vole gives big adiaspores typical ofE. crescens in their respective lungs.

     
  5. 5)

    from an epidemiologic point of view, it is difficult to imagine such a narrow cohabitation of two species of so non specific germ having each its own host.

     

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Bibliographie

  1. Ashburn, L. L. &Emmons, C. W. (1945) ExperimentalHaplosporangium infection.Arch. of Path., 39:3.Google Scholar
  2. Chevrel, M. L., Souquet, R., Ferrand, B., Richier, J. L., Doby, J. M., Doby-Dubois, M., Louvet, L. (1964) Polyparasitisme pulmonaire mycosique. Premier cas humain d'adiaspiromycose associée à une aspergillose.Ann. Ana. Path., (Paris), 9:463.Google Scholar
  3. Doby, J.M., Boisseau-Lebreuil, M. T. &Rault, B. (1969) L'adiaspiromycose parEmmonsia crescens ches les petits mammifères sauvages en France. Journées de la Société française de Mycologie médicale, Nantes, 23 et 24 Mai 1969.Google Scholar
  4. Emmons, C. W. &Jellison, W. L. (1960)Emmonsia crescens sp. n. and adiaspiromycosis in mammals.Ann. N. Y. Acad. Sci., 89:91.PubMedGoogle Scholar
  5. Jellison, W. L. &Lord, R. D. (1964) Adiaspiromycosis in Argentine mammals.Mycologia, 56:374.Google Scholar
  6. Taylor, R. L., Cavanaugh, D. C. &Hunter, D. H. (1968) Adiaspiromycosis in small mammals of Viet-Nam.Mycologia, 60:450.PubMedGoogle Scholar

Copyright information

© Dr. W. Junk N.V. 1970

Authors and Affiliations

  • M. T. Boisseau-Lebreuil
    • 1
  1. 1.Laboratoire de Parasitologie de la Faculté de Médecine et PharmacieRennes

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