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Microglial and neural differentiation in human teratomas

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Summary

Ten human teratomas arising outside the central nervous system (CNS) were studied using a panel of immunohistochemical, and lectin histochemical stains to determine the relationship of the presence of microglia to markers of neural maturity or differentiation. Microglia, identified by silver carbonate,Ricinus communis agglutinin-1 (RCA-1), or both were found in eight out of ten cases. They were common in mature areas which also had S-100, glial fibrillary acidic protein, vimentin, neurofilament, and synaptophysin immunostaining. Microglia were distinguished from macrophages in necrotic foci. Cells which were RCA-1 positive and silver carbonate positive were found in immature neural tissues but these lacked all typical features of microglia. These observations indicate that true microglia are frequent in nonCNS teratomas and that they are found in association with other indicators of neural maturation. The presence of possible precursors in immature areas suggests that microglia undergo maturation concurrent with neural differentiation in these tumors.

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Author notes

  1. T. Sangruchi

    Present address: Department of Pathology, Siriraj Hospital, Mahidol University, 10700, Bangkok, Thailand

Authors and Affiliations

  1. Department of Pathology, Immunopathology Unit, Cox 5, Massachusetts, General Hospital, 02114, Boston, MA, USA

    T. Sangruchi & R. A. Sobel

  2. Department of Pathology, Harvard Medical School, Boston, Mass, USA

    R. A. Sobel

Authors
  1. T. Sangruchi
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  2. R. A. Sobel
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Additional information

Supported by National Institutes of Health NS 00858, and NS 26773 and National Multiple Sclerosis Society RG 1792

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Sangruchi, T., Sobel, R.A. Microglial and neural differentiation in human teratomas. Acta Neuropathol 78, 258–263 (1989). https://doi.org/10.1007/BF00687755

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  • DOI: https://doi.org/10.1007/BF00687755

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