毒理性
虹鳟鱼喂食含有200 ppm浓度的桐酸和马瓦酸,这些物质能显著增加鳟鱼肝细胞对黄曲霉毒素B1致癌作用的敏感性。4周后,肝细胞质中出现了一种奇特的类似裂隙的条纹。随着持续喂食这种饲料,这些改变变得越来越频繁和明显。在8周和12周时,糙面内质网中含有许多平行排列和螺旋形的膜材料。肝脏中的葡萄糖-6-磷酸酶活性显著降低。
RAINBOW TROUT FED A DIET CONTAINING 200 PPM OF STERCULIC ACID & MALVALIC ACID, SUBSTANCES THAT GREATLY INCR THE SENSITIVITY OF TROUT LIVER CELLS TO CARCINOGENIC EFFECTS OF AFLATOXIN B1. AFTER 4 WK, PECULIAR CLEFT-LIKE STRIATIONS APPEARED IN CYTOPLASM OF HEPATOCYTES. THESE ALTERATIONS BECAME PROGRESSIVELY MORE FREQUENT & MARKED WITH CONTINUED FEEDING OF DIET. AT 8 & 12 WK, ROUGH-SURFACED ENDOPLASMIC RETICULUM CONTAINED MANY PARALLEL ARRAYS & WHORLED PROFILES OF MEMBRANE MATERIAL. GLUCOSE-6-PHOSPHATASE ACTIVITY IN LIVER WAS SIGNIFICANTLY DECREASED.
来源:Hazardous Substances Data Bank (HSDB)