| Title: |
Immunohistochemical Detection of Aflatoxin in Lesions of Aflatoxin-producing Aspergillus flavus Infection. |
| Authors: |
Takeshi Mori1 mtlemonade753@yahoo.co.jp, Hiroshi Abe2, Mitsutaka Yoshida3, Yutaka Tsukune1, Yuriko Yahata1, Tomoiku Takaku1, Jun Ando1, Miki Ando1, Shinichi Torii4, Makoto Sasaki1 |
| Source: |
Medical Mycology Journal. 2021, Vol. 62 Issue 3, p47-52. 6p. |
| Subject Terms: |
*ASPERGILLOSIS, *ASPERGILLUS flavus, *AFLATOXINS, *THYROID gland, *IMMUNE system, *HEPATOCELLULAR carcinoma, *SOLID-state fermentation |
| Abstract: |
Aflatoxin produced by Aspergillus flavus is known to be strongly related to liver injury (hepatocellular carcinoma)and immune system damage involving leukocytes. This toxin suppresses both the cell-mediated immune system and macrophage function, and decreases the production of complement and interferon molecules. Purpose: To evaluate the presence of aflatoxin in infectious lesions as well as how the toxin is taken up by leukocytes. Method: Pathological specimens from a patient who died from aspergillosis caused by aflatoxin-producing A. flavus were used. Anti-aflatoxin B1 antibody was reacted with paraffin-embedded lesion specimens from the heart, kidney, and thyroid gland of the patient and observed microscopically. Result: Positive reactions were detected in fungal elements and leukocytes (neutrophils and macrophages)in inflammatory lesions. Conclusion: Within the patient's body, A. flavus likely produced aflatoxin, which then was taken up by neutrophils and macrophages. These results suggest that leukocyte function and the immune mechanism are locally suppressed by aflatoxin. [ABSTRACT FROM AUTHOR] |
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| Database: |
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