Secondary metabolites, structure diagram: Trivial name - aflatoxin M2

Date: 26 November 2013

Secondary metabolites, structure diagram: Trivial name – aflatoxin M2

Notes:

Species: A. flavusSystematic name: Cyclopenta[c]furo[3′,2′:4,5]furo[2,3-h][1]benzopyran-1,11-dione, 2,3,6a,8,9,9a-hexahydro-9a-hydroxy-4-methoxy-Molecular formulae: C17H14O7Molecular weight: 330Chemical abstracts number: 6885-57-0Selected 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.

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Aspergillus fumigatus Fresen

Aspergillus fumigatus Fresen
Aspergillus flavus

Aspergillus flavus
Aspergillus flavus

Aspergillus flavus
Aspergillus flavus Link. A colonies after 1 weekB,C conidial heads x 920D Conidia x920 E Conidial head x920

Aspergillus flavus Link. A colonies after 1 weekB,C conidial heads x 920D Conidia x920 E Conidial head x920
Aspergillus cretensis

Conidia
Aspergillus cretensis

Seven-day-old cultures on CYA
Aspergillus cretensis

Conidiophores
Aspergillus clavatus

A colour enhanced image.
Cerebral aspergillosis – CT scans, CLL patient DS.

Patient diagnosed with Stage C Chronic Lymphocytic Leukaemia, treated in the MRC CLL4 study, with prednisolone for 4 weeks followed by oral chlorambucil for 7 days. Patient developed severe pneumonia due to pseudomonas and staphylococcus. Following treatment with broad spectrum antibiotics and 1 week of Abelcet, patient was readmitted with headache, disorientation and fever. CT brain scans showed 3 ring enhancing lesions, aspirated material showed neutrophils but grew aspergillus. Patient now improved on Abelcet (4 mg/kg) and oral itrconazole suspension 200mg b.d.

Thanks to Richard Chasty, Consultant Haematologist, North Staffordsire Hospital, UK.

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