RRC ID |
991
|
著者 |
Sharmin S, Kishi F, Sano A, Kamei K, Nishimura K, Miyaji M.
|
タイトル |
Direct invasion of bones by highly pathogenic fungi in an in vitro model and its ecological significance.
|
ジャーナル |
Nihon Ishinkin Gakkai Zasshi
|
Abstract |
Animal bones after being devitalized at death are strongly resistant to wear and tear and remain in the soil or environment much longer than other organic components from dead animals. Yet over the course of time they seem to disappear and thus our ecological surroundings are not cluttered with bone remnants. Mechanical factors creating compression or friction and chemical factors like pH of the soil and surroundings must together have provided concerted degrading effects. Microorganisms in the soil also help in this process by utilizing the organic components of devitalized bones. Certain highly pathogenic fungi that have been collected from soil from time to time and many other environmental fungi may take part in the degrading of the bone remnants. In this study, several strains from the highly pathogenic dimorphic fungi Coccidioides immitis, Blastomyces dermatitidis, Histoplasma spp., Paracoccidioides brasiliensis and also some strains of dematiaceous fungi (Exophiala spp. and Foncecaea pedrosoi) were inoculated to dissected and devitalized murine long bones that had been placed on solidified water agar plates to see if they would survive, grow and invade the bones. After being kept for 12 weeks at 25 degrees C all the parts of the histological sections of these bones showed invasion by most of the strains used in this study, although the cortical component of the bony architecture seemed to be comparatively resistant to invasion. Their ability to grow and sporulate in the aforementioned nutrient-limiting condition hinted at a possible role of these fungi in the degradation of devitalized bones.
|
巻・号 |
44(1)
|
ページ |
17-23
|
公開日 |
2003-1-1
|
DOI |
10.3314/jjmm.44.17
|
PMID |
12590255
|
MeSH |
Animals
Biodegradation, Environmental
Bone and Bones / anatomy & histology
Bone and Bones / metabolism*
Bone and Bones / microbiology*
Culture Media
Ecosystem
Fungi / growth & development
Fungi / physiology*
In Vitro Techniques
Male
Mice
Mice, Inbred Strains
Models, Theoretical
|
リソース情報 |
病原微生物 |
IFM 4827
IFM 4935
IFM 4945
IFM 5396
IFM 5416
IFM 5417
IFM 5418
IFM 41314
IFM 41315
IFM 41316
IFM 41317
IFM 41318
IFM 41329
IFM 41332
IFM 41333
IFM 41334
IFM 41335
IFM 41505
IFM 41598
IFM 41620
IFM 41621
IFM 41624
IFM 41625
IFM 41626
IFM 41628
IFM 41630
IFM 41632
IFM 41633
IFM 45809
IFM 45810
IFM 45811
IFM 45812
IFM 45813
IFM 45815
IFM 45816
IFM 45817
IFM 45868
IFM 46215
IFM 46463
IFM 46927
IFM 47060
IFM 47068
IFM 47069
IFM 47183
IFM 47195
IFM 47207
IFM 47217
IFM 47750
IFM 49109
IFM 49627
IFM 49721
IFM 50225
IFM 50545
IFM 50954
IFM 50992
IFM 50993
IFM 50994
IFM 50995
IFM 41612? |