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Expression of MMP-2 and MMP-9 in odontogenic myxoma in a child: report of a clinical case

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Abstract

Background

Odontogenic myxoma (OM) is a benign, locally invasive, non-metastasizing neoplasm of the jaw bones. Despite the benign nature of these lesions, there is a high rate of recurrence and the current recommended therapy, depending on the size and behaviour of the lesion, can vary from curettage with peripheral ostectomy, segmental resection up to radical resections for more aggressive lesions. OM is a rare tumour which occurs predominantly in the third decade of life and it is rare in children. Matrix metalloproteinases (MMPs) are a family of extracellular endopeptidases responsible for the degradation and remodelling of extracellular matrix, they are known to be involved in the progression and invasiveness of many types of tumour. MMPs have been studied in OM because of their well-known role in extracellular matrix degradation, tumour invasion and recurrence.

Clinical case report

We report a case of OM in a 6-year-old boy. A conservative excision was accomplished. The mass was excised without affecting the mandibular bone and the inferior alveolar nerve. Curettage and removal of the first right inferior molar were performed. After 6-month follow-up, no evidence of recurrence was found.

Experimental data

We investigated the expression of MMP-2 and MMP-9 in this case of OM in a child. RT-PCR showed the expression of both MMP-2 and MMP-9 mRNAs. Immunohistochemistry showed a weak MMP-2 protein expression while MMP-9 protein was not detected.

Conclusion

In this case of OM in a child, we report lack of recurrence after excision associated with low MMP-2 protein expression and absence of MMP-9. We believe it is worthy to deeply investigate the relationship between MMPs expression and OM behaviour with the aim to use MMPs as prognostic and/or therapeutic markers in OM.

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Authors and Affiliations

  1. BioNeC, Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche, Sezione di Istologia ed Embriologia “Arcangelo Pasqualino di Marineo”, Facoltà di Medicina e Chirurgia, Università degli Studi di Palermo, Via del Vespro 129, 90127, Palermo, Italy

    Annamaria Mauro, Luana Lipari, Angelo Leone, Aldo Gerbino & Maria Buscemi

  2. Dipartimento di Chirurgia Orale e Maxillo-Facciale, Facoltà di Medicina e Chirurgia, Università degli Studi di Palermo, Via del Vespro 129, 90127, Palermo, Italy

    Silvia Tortorici

Authors
  1. Annamaria Mauro
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  2. Luana Lipari
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  3. Silvia Tortorici
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  4. Angelo Leone
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  5. Aldo Gerbino
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  6. Maria Buscemi
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Corresponding author

Correspondence to Annamaria Mauro.

Additional information

A. Mauro and L. Lipari contributed equally to the work.

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Mauro, A., Lipari, L., Tortorici, S. et al. Expression of MMP-2 and MMP-9 in odontogenic myxoma in a child: report of a clinical case. Odontology 101, 233–238 (2013). https://doi.org/10.1007/s10266-011-0056-8

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  • DOI: https://doi.org/10.1007/s10266-011-0056-8

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