Date: 26 November 2013
Secondary metabolites, structure diagram: Trivial name – aflatoxin M1
Copyright: n/a
Notes:
Species: A. flavus, A. parasiticusSystematic name: Cyclopenta[c]furo[3′,2′:4,5]furo[2,3-h][1]benzopyran-1,11-dione, 2,3,6a,9a-tetrahydro-9a-hydroxy-4-methoxy-, (6aR-cis)-Molecular formulae: C17H12O7Molecular weight: 328.28Chemical abstracts number: 6795-23-9Selected references: Nakazato, Mitsuo; Morozumi, Satoshi; Saito, Kazuo; Fujinuma, Kenji; Nishima, Taichiro; Kasai, Nobuhiko (Dep. Food Hyg. and Nutr., Tokyo Metrop. Res. Lab. Public Health, Tokyo 169, Japan). Eisei Kagaku, 37(2), 107-16 (English) 1991.Toxicity: Slightly less toxic than aflatoxin B1 with an oral LD50 for the one day-old duckling 0.46 mg/kg body-weight. Significantly less carcinogenic than aflatoxin B1.
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Mr RM is 80 and an ex-coal miner.He developed pneumoconiosis from exposure to coal dust. He also developed rheumatoid arthritis and the combination of this disease and pneumoconiosis is called Caplan’s syndrome.
His chest Xray in early 2015 shows extensive bilateral pulmonary shadowing with solid looking nodules superimposed on abnormal lung fields, contraction of his left lung with an elevated diaphragm and a large left upper lobe aspergilloma, displaying a classic air crescent. His CT scan from mid 2014 demonstrates a large aspergilloma in a cavity on the left, with marked pleural thickening around it, which is partially ‘calcified’ towards its base. Inferiorly on other images,remarkable pleural thickening and fibrotic irregular and spiculated nodules are seen, most partially calcified.
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