Emestrin, a New Mycotoxin, Introduced Injuries in Various Organs of Mice

  • Kiyoshi Terao
  • Emiko Ito


Emestrin (EMS) is an epidithiodioxopiperazine mycotoxin first described as a metabolite of Emericella striata 6 (Fig. 1). EQ-1 named by Maebayashi et al.3 for a toxic metabolite of E. quadrilineata and E. paravathecia was identified as EMS by Seya et al.6 Species of the genus Emericella are disibuted widely throughout tropical and subtropical countries. EMS-producing species have been isolated from various speices imported into Japan from several counries in Asia.7 In contrast to chemical studies and surveillance of food-born EMS-producing fungi, only limited information is available regarding the biological activities of EMS. In an in vitro system, K. Ishizaki and K. Kawai2 observed potent suppressive effects of EMS on the respiratory system in mitochondria. In an in vivo system, however, no precise toxicological studies have been reported regarding the target organs of experimental animals after administration of EMS. Our present study was undertaken to investigate the morphological changes in the target organs of mice after the administration of EMS.


Rough Endoplasmic Reticulum Cortical Layer Light Micrograph Massive Necrosis Hepatocyte Nucleus 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • Kiyoshi Terao
    • 1
  • Emiko Ito
    • 1
  1. 1.Research Institute for Pathologic Fungi and Microbial ToxicosesChiba UniversityChibaJapan

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