Dietary fumonisins disrupt sphingolipid metabolism in mink and increase the free sphinganine to sphingosine ratio in urine but not in hair.
This study was conducted to investigate the effects of dietary Fusarium moniliforme culture material (M-1325) containing known concentrations of fumonisins B1, B2 and B3 on sphingolipids in urine and hair of mink (Mustela vison) for use as potential, non-invasive biomarkers of exposure to fumonisins in this species. Feeding mink diets containing 86, 22, and 7 ppm or 200, 42, and 12 ppm of fumonisins B1, B2 and B3, respectively, yielded marked increases in urinary free sphinganine (Sa) and free sphingosine (So) concentrations, and free Sa/free So ratios (2 to 11-fold) within 7 d, compared to controls. Free Sa and free So concentrations and Sa/So ratios in hair samples from mink fed the control or high dose fumonisin diets for 100 days were similar and were not apparently altered by exposure to these mycotoxins. These results suggest that Sa/So ratios in urine, but not in hair of mink can serve as an early indicator of exposure to fumonisins in this species.
Morgan
M K
MK
Department of Animal Science, Michigan State University, East Lansing 48824, USA.
Schroeder
J J
JJ
Rottinghaus
G E
GE
Powell
D C
DC
Bursian
S J
SJ
Aulerich
R J
RJ
D000818:Animals; D002264:Carboxylic Acids / Q000633:toxicity*; D005260:Female; D037341:Fumonisins; D006197:Hair / Q000378:metabolism*; D008297:Male; D008907:Mink; D013107:Sphingolipids / Q000378:metabolism*; D013110:Sphingosine / Q000031:analogs & derivatives* / Q000378:metabolism*
D002264:Carboxylic Acids; D037341:Fumonisins; D013107:Sphingolipids; C056934:fumonisin B2; C073063:fumonisin B3; C056933:fumonisin B1; D013110:Sphingosine; C005682:safingol