MMP7 modulation by short- and long-term radiotherapy in patients with rectal cancer

Autor: Alexander Gaber, Diya Adawi, Karin Jirström, Bianca Ottochian, Nicola Avenia, Andrea Polistena, Björn Nodin, Louis Banka Johnson, Christina Stene
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Male
Genetics and Molecular Biology (all)
Cancer Research
medicine.medical_specialty
Time Factors
Colorectal cancer
medicine.medical_treatment
Urology
Inflammation
Matrix metalloproteinase
MMP7
Biochemistry
General Biochemistry
Genetics and Molecular Biology
03 medical and health sciences
0302 clinical medicine
Transforming Growth Factor beta
Humans
Medicine
Matrilysin
Rectal cancer
Aged
Pharmacology
Tissue microarray
biology
Radiotherapy
Rectal Neoplasms
business.industry
Rectum
Matrix metalloproteinases
Dose-Response Relationship
Radiation
Transforming growth factor beta
medicine.disease
Immunohistochemistry
Neoadjuvant Therapy
Radiation therapy
Tissue Array Analysis
Matrix Metalloproteinase 7
030220 oncology & carcinogenesis
biology.protein
Female
Radiotherapy
Adjuvant
030211 gastroenterology & hepatology
medicine.symptom
business
Research Article
Popis: Background/Aim: Matrix metalloproteinase 7 (MMP7) expression is highly associated with colorectal cancer and modulates tumour growth and invasion. Radiation injury induces inflammation with increases in MMP7 and in transforming growth factor beta (TGFβ). The aim of this study was to investigate the effect on MMP7 and TGFβ. expression in patients with rectal cancer undergoing different regimens of neoadjuvant radiotherapy (RT). Patients and Methods: We studied 53 patients in three RT treatment groups receiving RT of 25 Gy, long-term RT 50 Gy and controls receiving no RT. Three biopsies were obtained from each patient during the treatments: before RT, after RT and after surgery. Tissue samples were formalin fixed, paraffin embedded and tissue microarrays were constructed and stained for MMP7 and TGFβ. Mann–Whitney U-tests and Wilcoxon Z-tests were used to determine differences between patients before and after RT, and after surgery, as well as between the RT groups. Results: In all three patient groups, increases of MMP7 and TGFβ expression were observed after surgery. MMP7 expression was significantly increased in patients receiving short-term RT but TGFβ expression was not affected by RT. Conclusion: 50 Gy Irradiation of rectal cancer gives less tumour activation of MMP7, whilst it is up-regulated by 25 Gy and surgery regardless of RT. (Less)
Databáze: OpenAIRE
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