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Erschienen in: International Journal of Colorectal Disease 6/2007

01.06.2007 | Original Article

Matrix metalloproteinases in rectal mucosa, tumour and plasma: response after preoperative irradiation

verfasst von: Eva Angenete, Marcus Langenskiöld, Peter Falk, Marie-Louise Ivarsson

Erschienen in: International Journal of Colorectal Disease | Ausgabe 6/2007

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Abstract

Background

In rectal cancer treatment, preoperative radiotherapy has led to reduction of local recurrence, but it is associated with morbidity and increased risk for secondary tumours. Matrix metalloproteinases (MMPs) are associated with tumour progression through tissue remodeling. The aim of this study was to investigate tissue remodeling after preoperative radiotherapy and to explore possible correlations with clinical outcome.

Materials and methods

Ninety-one patients scheduled for rectal cancer surgery were included; 49% received preoperative radiotherapy three-field treatment, 5 × 5 Gy. Blood samples and biopsies from tumour and adjacent mucosa were taken during surgery. Biopsies and plasma were assayed with ELISA for MMP-1, MMP-2 and MMP-9. Clinical outcome was reviewed focusing on infections, perineal healing, fistula formation, anastomotic dehiscence, small bowel obstruction, local recurrence and distant metastases.

Results

Compared to non-irradiated mucosa, MMP-2 (p < 0.0001), MMP-1 (p = 0.03) and MMP-9 (p = 0.04) were significantly higher in irradiated normal mucosa. Tumour tissue had higher levels of MMP-2 if irradiated (p < 0.0001). A correlation between MMP-2 levels and wound infection (p = 0.02) as well as fistula formation (p = 0.04) was found. MMP-1 in mucosa (p = 0.02) and tumour (p = 0.04) were higher in patients developing distant metastases. Plasma levels were not influenced by irradiation, but MMP-2 was higher in patients who were later developing distant metastases (p = 0.007).

Conclusions

Extracellular matrix remodeling after radiotherapy seems to be correlated to postoperative morbidity; MMP-2 is associated with both wound infections and fistula formation. High levels of MMP-1 in tumour and mucosa as well as MMP-2 in plasma may be correlated to risk of developing distant metastases.
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Metadaten
Titel
Matrix metalloproteinases in rectal mucosa, tumour and plasma: response after preoperative irradiation
verfasst von
Eva Angenete
Marcus Langenskiöld
Peter Falk
Marie-Louise Ivarsson
Publikationsdatum
01.06.2007
Verlag
Springer-Verlag
Erschienen in
International Journal of Colorectal Disease / Ausgabe 6/2007
Print ISSN: 0179-1958
Elektronische ISSN: 1432-1262
DOI
https://doi.org/10.1007/s00384-006-0225-3

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