Date: 26 November 2013
Secondary metabolites, 3D structure: Trivial name – viomellein
Copyright: n/a
Notes:
Species: A. melleus, A. ochraceusSystematic name: (8,8′-BI-1H-NAPHTHO(2,3-c)PYRAN)-1,1′,6,9-TETRONE, 3,3′,4,4′-TETRAHYDRO-7,7′-DIM (8,8′-Bi-1H-naphtho(2,3-c)pyran)-1,1′,6,9-tetrone, 3,3′,4,4′-tetrahydro-7,7′-dimethoxy-3,3′-dimethyl-9′,10,10′-trihydroxy-, (R-(R*,R*))-Molecular formulae: C30H24O11Molecular weight: 560.505Chemical abstracts number: 55625-78-0Selected references: Stack ME, Mislivec PB. Production of xanthomegnin and viomellein by isolates of Aspergillus ochraceus, Penicillium cyclopium, and Penicillium viridicatum. Appl Environ Microbiol. 1978 Oct;36(4):552-4. Filtenborg O, Frisvad JC, Svendsen JA. Simple screening method for molds producing intracellular mycotoxins in pure cultures. Appl Environ Microbiol. 1983 Feb;45(2):581-5. Robbers JE, Hong S, Tuite J, Carlton WW. Production of xanthomegnin and viomellein by species of Aspergillus correlated with mycotoxicosis produced in mice. Appl Environ Microbiol. 1978 Dec;36(6):819-23.Toxicity: Causes hepatic and renal damage in animals and associated with porcine nephropathy together with ochratoxins
Images library
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4 Total obstruction of the sinuses due to inflamed mucosa. (Patient 04)
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1 Axial computed tomography (CT) scans of the frontal sinus.
A: due to the long lasting pressure of mucus, the bone of the anterior wall of frontal sinus is thinned out and elevated anteriorly, forming a bulge. B: same situation as depicted in fig A: the posterior bony wall of frontal sinus is thinned out and extremely elevated posteriorly towards the frontal lobe of the brain. As depicted on the scan, a thin bony layer covering the dura could be recognized intraoperatively
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2 Same patient as 1 and 3, frontal CT
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D. 6 months later, tenacious yellow secretions in L basal bronchial division
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C. After suction the material was seen to extend distally – obstructing the right basal stem bronchus
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B. After suction the material was seen to extend distally – obstructing the right basal stem bronchus
