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Aspergillus ustus
(Bainer) Thom & Church (1926)
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Colonies on potato dextrose agar at 25°C are white to yellow to drab gray to brown, but never green. Gray is the most common color. Reverse yellow to brown with a yellow diffusing pigment. Exudate, when present, is clear to yellow to purplish-brown. Rapid growth. Texture is woolly to cottony to somewhat granular.
Hyphae are septate and hyaline. Conidial heads are radiate to loosely columnar and biseriate. Conidiophores 30-350 µm, smooth-walled, and brown. Vesicles are globose to subglobose, 7-16 µm in diameter. Metulae and phialides cover the upper portion of the vesicle. Conidia are globose, 3-4.5 µm, with very rough walls. Hülle cells, irregular to elongate in shape, should be searched for, and may be light dependent[531, 1215, 1875, 2202].
This species has been reported as an agent of fungal endocarditis on a prosthetic valve[387], primary cutaneous disease in immunosuppressed patients [819], [1612], [1919], [2167], and invasive disseminated disease,[148] , [1105], [2317], and[2394]. Strains have been differentiated by random amplification of polymorphic DNA [1876].
| AMB |
CAS |
ITRA |
VORI |
| 0.5 µg/ml=1 |
2.0 µg/ml=1 |
1.0 µg/ml=1 |
2.0 µg/ml=1 |
| 2.0 µg/ml=3 |
16 µg/ml=2 |
2.0 µg/ml=2 |
4.0 µg/ml=2 |
| 4.0 µg/ml=2 |
32 µg/ml=3 |
|
8.0 µg/ml=3 |
| Drug/N |
AMB/6 |
CAS/6 |
ITRA/3 |
VORI/6 |
| MIC Range |
0.5-4.0 |
2.0-32 |
1.0-2.0 |
2.0-8.0 |
| MIC50 |
2.0 |
16 |
- |
4.0 |
* Fungus Testing Laboratory unpublished data (NCCLS M38-A)
PubMed
GenBank
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References
148. Azzola, A., J. R. Passweg, J. M. Habicht, L. Bubendorf, M. Tamm, A. Gratwohl, and G. Eich. 2004. Use of lung resection and voriconazole for successful treatment of invasive pulmonary Aspergillus ustus infection. J Clin Microbiol. 42:4805-4808.
387. Carrizosa, J., M. E. Levison, T. Lawrence, and D. Kaye. 1974. Cure of Aspergillus ustus endocarditis on a prosthetic valve. Arch Intern Med. 133:486-90.
531. de Hoog, G. S., J. Guarro, J. Gene, and M. J. Figueras. 2000. Atlas of Clinical Fungi, 2nd ed, vol. 1. Centraalbureau voor Schimmelcultures, Utrecht, The Netherlands.
819. Gene, J., A. Azon-Masoliver, J. Guarro, G. De Febrer, A. Martinez, C. Grau, M. Ortoneda, and F. Ballester. 2001. Cutaneous infection caused by Aspergillus ustus, an emerging opportunistic fungus in immunosuppressed patients. J Clin Microbiol. 39:1134-1136.
1105. Iwen, P. C., M. E. Rupp, M. R. Bishop, M. G. Rinaldi, D. A. Sutton, S. Tarantolo, and S. H. Hinrichs. 1998. Disseminated aspergillosis caused by Aspergillus ustus in a patient following allogeneic peripheral stem cell transplantation. J Clin Microbiol. 36:3713-3717.
1215. Klich, M. A., and J. I. Pitt. 1988. A Laboratory Guide to Common Aspergillus Species and their Teleomorphs. Commonwealth Scientific and Industrial Research Organization, North Ryde, New South Wales, Australia.
1612. Nakai, K., Y. Kanda, S. Mineishi, A. Hori, A. Chizuka, H. Niiya, T. Tanimoto, M. Ohnishi, M. Kami, A. Makimoto, R. Tanosaki, Y. Matsuno, N. Yamazaki, K. Tobinai, and Y. Takaue. 2002. Primary cutaneous aspergillosis caused by Aspergillus ustus following reduced-intensity stem cell transplantation. Ann. Hematol. 81:593-6. Epub 2002 Sep 24.
1875. Raper, K. B., and D. I. Fennell. 1965. The genus Aspergillus. Williams & Wilkins, Baltimore.
1876. Rath, P. M., K. Petermeier, P. E. Verweij, and R. Ansorg. 2002. Differentiation of Aspergillus ustus strains by random amplification of polymorphic DNA. J Clin Microbiol. 40:2231-2233.
1919. Ricci, R. M., J. S. Evans, J. J. Meffert, L. Kaufman, and L. C. Sadkowski. 1998. Primary cutaneous Aspergillus ustus infection: second reported case. J Am Acad Dermatol. 38:797-8.
2167. Stiller, M. J., L. Teperman, S. A. Rosenthal, A. Riordan, J. Potter, J. L. Shupack, and M. A. Gordon. 1994. Primary cutaneous infection by Aspergillus ustus in a 62-year-old liver transplant recipient. J Am Acad Dermatol. 31:344-7.
2202. Sutton, D. A., A. W. Fothergill, and M. G. Rinaldi (ed.). 1998. Guide to Clinically Significant Fungi, 1st ed. Williams & Wilkins, Baltimore.
2317. Verweij, P. E., M. F. Q. van den Berth, P. M. Rath, B. E. de Pauw, A. Voss, and J. Meis. 1999. Invasive aspergillosis caused by Aspergillus ustus: Case report and review. J Clin Microbiol. 37:1606-1609.
2394. Weiss, L. M., and W. A. Thiemke. 1983. Disseminated Aspergillus ustus infection following cardiac surgery. Am J Clin Pathol. 80:408-11.
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