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Livers containing Mallory bodies (MBs, hyalin degenerative cytoplasmic inclusions) were examined using Heuser's and Van Harreveld's cryo-techniques. The tissues were collected from 1) a patient suffering from alcoholic hepatitis and 2) mice treated with griseofulvin (GF, an anti-mitotic drug). Normal mouse liver and isolated MBs from GF-treated mice were also analyzed by the same methods. Our results suggest that under the toxic influence of alcohol or GF on microtubular elements, MBs are generated by entanglement of elements of 10 nm filaments with microtubule elements. This in turn inhibits cellular transport processes. The reticular net of the ER-element which is usually observable in the normal tissue is changed into numerous small vesicles in the pathological and experimental tissues. The diameters of hepatocytes containing these vesicles were 1.5 to 2 times larger than control diameters. MBs have previously been described in thin sections as filamentous tangles. On replicas we found that they appear to be composed of pairs of filaments twisted in a roughly helical manner, each having a diameter less than 10 nm. The paired helical nature of the MB-filaments is reminiscent of other inclusion bodies, which are also composed of elements of 10 nm filaments, observable in various neurological diseases.

On the three-dimensional structure of quick-frozen hepatic mallory bodies with special reference to the appearance of cytoplasmic vesicles.