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Erschienen in: European Radiology 9/2018

29.03.2018 | Oncology

In vivo study of enhanced chemotherapy combined with ultrasound image-guided focused ultrasound (USgFUS) treatment for pancreatic cancer in a xenograft mouse model

verfasst von: Eun-Joo Park, Yun Deok Ahn, Jae Young Lee

Erschienen in: European Radiology | Ausgabe 9/2018

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Abstract

Objectives

This study was designed to investigate whether focused ultrasound (FUS) treatment with a higher mechanical index (MI) can enhance the effects of combined chemotherapy more than with a lower MI, and to evaluate the feasibility of the chemotherapy combined with FUS at a higher MI as an alternative treatment protocol.

Methods

Mice in the first study were divided into six groups: control, chemotherapy only (GEM), two groups treated with FUS only at two different MIs, and two groups treated with chemotherapy and FUS (GEM + FUS). Mice were treated with a single-session treatment; one session consisted of three weekly treatments and 1 week of follow-up monitoring. In the second study, mice were assigned to two groups (GEM, GEM + FUS) and treated with four treatment sessions.

Results

In the single-session treatment, tumor growth was most effectively suppressed in GEM + FUS group with a higher MI. Tumor growth rate was significantly lower in GEM + FUS group than in GEM group for multiple-session treatment. Specifically, three of ten mice in GEM + FUS group showed complete remission.

Conclusions

This study demonstrated that FUS at a higher MI can enhance chemotherapy outcomes more than at a lower MI and demonstrated the potential of FUS in combination with chemotherapy as a new cancer treatment protocol.

Key points

• Combined treatment of chemotherapy and focused ultrasound can effectively suppress tumor growth.
• For the focused ultrasound treatment conditions used in this study, focused ultrasound with relatively higher mechanical index shows more enhanced therapeutic outcomes than with the lower mechanical index.
• Combination therapy shows the possibility as a new cancer treatment protocol.
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Metadaten
Titel
In vivo study of enhanced chemotherapy combined with ultrasound image-guided focused ultrasound (USgFUS) treatment for pancreatic cancer in a xenograft mouse model
verfasst von
Eun-Joo Park
Yun Deok Ahn
Jae Young Lee
Publikationsdatum
29.03.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 9/2018
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-018-5355-9

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