This study compared the pathological and haematological effects of neosolaniol monoacetate in male Wistar rats with those of diacetoxyscirpenol, a highly toxic trichothecene mycotoxin. Both toxins caused statistically significant decreases in erythrocyte counts and increased the proportion of larger platelets compared to controls when dosed at 1 mg/kg body weight three times/wk for up to 5 wk. Lesions caused by treatment with either toxin at this dosage level were mild and were seen--mainly after 2-4 wk--in the actively dividing cells of the thymus, spleen, lymph nodes and bone marrow. Reduced severity or disappearance of the lesions was noted towards the end of the treatment period. The type and severity of the toxic effects of neosolaniol monoacetate appeared to be similar to those of diacetoxyscirpenol.
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http://dx.doi.org/10.1016/0278-6915(87)90232-8 | DOI Listing |
Molecules
November 2013
Department of Systems Biology, Technical University of Denmark, Søltofts Plads, Building 221, Kgs. Lyngby DK-2800, Denmark.
The purpose of this study was to identify and characterize fungal natural products (NPs) with in vitro bioactivity towards leukemia cells. We based our screening on a combined analytical and bio-guided approach of LC-DAD-HRMS dereplication, explorative solid-phase extraction (E-SPE), and a co-culture platform of CLL and stromal cells. A total of 289 fungal extracts were screened and we tracked the activity to single compounds in seven of the most active extracts.
View Article and Find Full Text PDFJ AOAC Int
January 1997
Programme on Mycotoxins and Experimental Carcinogenesis, Tygerberg, South Africa.
Fusarium toxins are a major group of secondary metabolites, produced by several species, that may contaminate food cereals and animal feeds. We describe results of a study in which a number of physicochemical constants for 12 Important Fusarium mycotoxins (zearalenone, diacetoxyscirpenol, T-2 toxin, neosolaniol monoacetate, deoxynivalenol, nivalenol, fumonisin B1, fumonisin B2, moniliformin, fusarenon-X, HT-2 toxin, and beta-zearalenol) were determined. Nuclear magnetic resonance, mass spectrometric, UV spectral, molar absorption coefficients, fluorescence spectra, melting points, and specific rotation data are presented.
View Article and Find Full Text PDFMycotoxin Res
March 1989
Research Institute for Nutritional Diseases, South African Medical Research Council, PO Box 70, 7505, Tygerberg, South Africa.
Cultures of 12 South African isolates of an undescribedFusarium species resembling but distinct fromF camptoceras were analysed for the presence of diacetoxyscirpenol (DAS), neosolaniol monoacetate (NMA), and T-2 toxin, by capillary gas chromatography utilizing electron capture detection. No DAS or T-2 toxin could be detected in any of the cultures of the isolates. NMA was, however, detected in 10 of the 12 isolates at levels ranging from 310 to 2060 ng/g.
View Article and Find Full Text PDFFood Chem Toxicol
October 1987
Research Institute for Nutritional Diseases, South African Medical Research Council, Tygerberg.
This study compared the pathological and haematological effects of neosolaniol monoacetate in male Wistar rats with those of diacetoxyscirpenol, a highly toxic trichothecene mycotoxin. Both toxins caused statistically significant decreases in erythrocyte counts and increased the proportion of larger platelets compared to controls when dosed at 1 mg/kg body weight three times/wk for up to 5 wk. Lesions caused by treatment with either toxin at this dosage level were mild and were seen--mainly after 2-4 wk--in the actively dividing cells of the thymus, spleen, lymph nodes and bone marrow.
View Article and Find Full Text PDFFood Addit Contam
November 1987
Research Institute for Nutritional Diseases, South African Medical Research Council, Tygerberg.
A method for the quantitative determination of the toxic fungal products diacetoxyscirpenol and T-2 toxin is described. Initially intended for the screening of fungal cultures grown on maize, it has subsequently been used successfully for the analysis of maize and oat grain samples. The method involves extraction with aqueous methanol followed by a two-stage clean-up procedure utilizing a commercial kieselguhr column and a silica gel cartridge.
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