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PubMed · 3815639

[Structural changes demonstrable by optic and electron microscopy in cellular and support components of nevi in the phase of neoplastic transformation and their therapeutic treatment].

G Fabiano·A Falzea·C Fabiano·E Corvaia·A D'Andrea·T Gumina·G Gurrieri·G Labruto
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Abstract

The mole can transform itself in melanoma. The transformation is caused in some's opinion by congenital cells, in some's opinion by external elements (metabolic, physical, caustic, etc.). The authors lean to external causes metabolic, physical caustic) and they consider useful the chirurgical and radiant treatment.

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Cell Transformation, NeoplasticHumansMelanomaMicroscopy, ElectronNevusSkin NeoplasmsEnglish AbstractJournal Article

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G Fabiano, A Falzea, C Fabiano, E Corvaia, A D'Andrea, T Gumina, G Gurrieri, G Labruto. 1986. [Structural changes demonstrable by optic and electron microscopy in cellular and support components of nevi in the phase of neoplastic transformation and their therapeutic treatment].. https://pubmed.ncbi.nlm.nih.gov/3815639/

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PubMed1992

Jumping translocations originate clonal rearrangements in SV40-transformed human fibroblasts.

A comparative study of chromosomal rearrangements occurring in 4 independent clones obtained from SV40-transformed cornea and skin human fibroblasts was performed. Rearrangements principally affect some constitutive heterochromatin and, to a lesser degree, telomeric regions. This results in multiple exchanges between a limited number of chromosome structures, i.e., in jumping translocations. Such rearrangements occur even at early passages and some of them give rise to clonal rearrangements that accumulate at late passages. This process is responsible for progressive modification of the karyotypes, principally characterized by deletion of a number of chromosome segments. Thus, clonal rearrangements are selected among many others not occurring at random. The selective pressure retaining clonal rearrangement seems to be similar for the 4 independent clones, since selection of the derivative chromosomes leads to the same imbalances, whatever the origin of the clone. This sequence of events recalls that of human solid tumors, since jumping rearrangements are generally observed in pre-malignant conditions or in low-grade malignancies, whereas clonal rearrangements leading to typical imbalances are detected in more advanced malignant tumors.

Cell Transformation, Neoplastic↗