Restricted water diffusion in diffusion-weighted magnetic resonance imaging in pancreatic cancer is associated with tumor hypoxia
Hypoxia is a hallmark of pancreatic cancer (PDAC) due to its compact and extensive fibrotic tumor stroma. Hypoxia contributes to high lethality of this disease, by inducing a more malignant phenotype and resistance to radiation and chemotherapy. Thus, non-invasive methods to quantify hypoxia could b...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2021
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| In: |
Cancers
Year: 2021, Volume: 13, Issue: 1, Pages: 1-16 |
| ISSN: | 2072-6694 |
| DOI: | 10.3390/cancers13010089 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/cancers13010089 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2072-6694/13/1/89 
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| Author Notes: | Philipp Mayer, Anne Kraft, Hagen R. Witzel, Nicole Marnet, Nina Hörner, Wilfried Roth, Stefan Heinrich, Thilo Hackert, Frank Bergmann, Hans-Ulrich Kauczor, Miriam Klauss and Matthias M. Gaida |
MARC
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| 245 | 1 | 0 | |a Restricted water diffusion in diffusion-weighted magnetic resonance imaging in pancreatic cancer is associated with tumor hypoxia |c Philipp Mayer, Anne Kraft, Hagen R. Witzel, Nicole Marnet, Nina Hörner, Wilfried Roth, Stefan Heinrich, Thilo Hackert, Frank Bergmann, Hans-Ulrich Kauczor, Miriam Klauss and Matthias M. Gaida |
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| 520 | |a Hypoxia is a hallmark of pancreatic cancer (PDAC) due to its compact and extensive fibrotic tumor stroma. Hypoxia contributes to high lethality of this disease, by inducing a more malignant phenotype and resistance to radiation and chemotherapy. Thus, non-invasive methods to quantify hypoxia could be helpful for treatment decisions, for monitoring, especially in non-resectable tumors, or to optimize personalized therapy. In the present study, we investigated whether tumor hypoxia in PDAC is reflected by diffusion-weighted magnetic resonance imaging (DW-MRI), a functional imaging technique, frequently used in clinical practice for identification and characterization of pancreatic lesions. DW-MRI assesses the tissue microarchitecture by measuring the diffusion of water molecules, which is more restricted in highly compact tissues. As reliable surrogate markers for hypoxia, we determined Blimp-1 (B-lymphocyte induced maturation protein), a transcription factor, as well as vascular endothelial growth factor (VEGF), which are up-regulated in response to hypoxia. In 42 PDAC patients, we observed a close association between restricted water diffusion in DW-MRI and tumor hypoxia in matched samples, as expressed by high levels of Blimp-1 and VEGF in tissue samples of the respective patients. In summary, our data show that DW-MRI is well suited for the evaluation of tumor hypoxia in PDAC and could potentially be used for the identification of lesions with a high hypoxic fraction, which are at high risk for failure of radiochemotherapy. | ||
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