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Cho CH, Sreenivasa G, Plotkin M, Pietsch H, Wust P, Lüdemann L. Tumour perfusion assessment during regional hyperthermia treatment: Comparison of temperature probe measurement with H215O-PET perfusion. Int J Hyperthermia 2010; 26:404-11. [DOI: 10.3109/02656731003605662] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Chi-Hee Cho
- Department of Radiation Therapy, CVK, Charité, Universititätsmedizin Berlin
| | - Geetha Sreenivasa
- Department of Radiation Therapy, CVK, Charité, Universititätsmedizin Berlin
| | - Michail Plotkin
- Department of Nuclear Medicine, CVK, Charité, Universititätsmedizin Berlin
| | - Hubertus Pietsch
- TRG Diagnostic Imaging, Bayer Schering Pharma AG, Berlin, Germany
| | - Peter Wust
- Department of Radiation Therapy, CVK, Charité, Universititätsmedizin Berlin
| | - Lutz Lüdemann
- Department of Radiation Therapy, CVK, Charité, Universititätsmedizin Berlin
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Salomir R, Rata M, Cadis D, Petrusca L, Auboiroux V, Cotton F. Endocavitary thermal therapy by MRI-guided phased-array contact ultrasound: experimental and numerical studies on the multi-input single-output PID temperature controller's convergence and stability. Med Phys 2010; 36:4726-41. [PMID: 19928104 DOI: 10.1118/1.3215534] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Endocavitary high intensity contact ultrasound (HICU) may offer interesting therapeutic potential for fighting localized cancer in esophageal or rectal wall. On-line MR guidance of the thermotherapy permits both excellent targeting of the pathological volume and accurate preoperatory monitoring of the temperature elevation. In this article, the authors address the issue of the automatic temperature control for endocavitary phased-array HICU and propose a tailor-made thermal model for this specific application. The convergence and stability of the feedback loop were investigated against tuning errors in the controller's parameters and against input noise, through ex vivo experimental studies and through numerical simulations in which nonlinear response of tissue was considered as expected in vivo. METHODS An MR-compatible, 64-element, cooled-tip, endorectal cylindrical phased-array applicator of contact ultrasound was integrated with fast MR thermometry to provide automatic feedback control of the temperature evolution. An appropriate phase law was applied per set of eight adjacent transducers to generate a quasiplanar wave, or a slightly convergent one (over the circular dimension). A 2D physical model, compatible with on-line numerical implementation, took into account (1) the ultrasound-mediated energy deposition, (2) the heat diffusion in tissue, and (3) the heat sink effect in the tissue adjacent to the tip-cooling balloon. This linear model was coupled to a PID compensation algorithm to obtain a multi-input single-output static-tuning temperature controller. Either the temperature at one static point in space (situated on the symmetry axis of the beam) or the maximum temperature in a user-defined ROI was tracked according to a predefined target curve. The convergence domain in the space of controller's parameters was experimentally explored ex vivo. The behavior of the static-tuning PID controller was numerically simulated based on a discrete-time iterative solution of the bioheat transfer equation in 3D and considering temperature-dependent ultrasound absorption and blood perfusion. RESULTS The intrinsic accuracy of the implemented controller was approximately 1% in ex vivo trials when providing correct estimates for energy deposition and heat diffusivity. Moreover, the feedback loop demonstrated excellent convergence and stability over a wide range of the controller's parameters, deliberately set to erroneous values. In the extreme case of strong underestimation of the ultrasound energy deposition in tissue, the temperature tracking curve alone, at the initial stage of the MR-controlled HICU treatment, was not a sufficient indicator for a globally stable behavior of the feedback loop. Our simulations predicted that the controller would be able to compensate for tissue perfusion and for temperature-dependent ultrasound absorption, although these effects were not included in the controller's equation. The explicit pattern of acoustic field was not required as input information for the controller, avoiding time-consuming numerical operations. CONCLUSIONS The study demonstrated the potential advantages of PID-based automatic temperature control adapted to phased-array MR-guided HICU therapy. Further studies will address the integration of this ultrasound device with a miniature RF coil for high resolution MRI and, subsequently, the experimental behavior of the controller in vivo.
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Affiliation(s)
- Rares Salomir
- Inserm, U556, Lyon F-69003, France and Université de Lyon, Lyon F-69003, France.
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No Sustained Improvement in Tumor Oxygenation After Localized Mild Hyperthermia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 662:393-8. [DOI: 10.1007/978-1-4419-1241-1_57] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Horsman MR. Angiogenesis and vascular targeting: Relevance for hyperthermia. Int J Hyperthermia 2009; 24:57-65. [DOI: 10.1080/02656730701829710] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Lüdemann >L, Wust P, Gellermann J. Perfusion measurement using DCE-MRI: Implications for hyperthermia. Int J Hyperthermia 2009; 24:91-6. [DOI: 10.1080/02656730701836954] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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56
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Moyer HR, Delman KA. The role of hyperthermia in optimizing tumor response to regional therapy. Int J Hyperthermia 2009; 24:251-61. [DOI: 10.1080/02656730701772480] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Borkamo ED, Dahl O, Bruland O, Fluge Ø. Global gene expression analyses reveal changes in biological processes after hyperthermia in a rat glioma model. Int J Hyperthermia 2009; 24:425-41. [DOI: 10.1080/02656730802081997] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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58
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MR Characterization of Mild Hyperthermia-Induced Gadodiamide Release From Thermosensitive Liposomes in Solid Tumors. Invest Radiol 2008; 43:877-92. [DOI: 10.1097/rli.0b013e31818768cd] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Mermut O, Noiseux I, Bouchard JP, Cormier JF, Desroches P, Fortin M, Gallant P, Leclair S, Vernon ML, Diamond KR, Patterson MS. Effect of liposomal confinement on photothermal and photo-oximetric fluorescence lifetimes of photosensitizers with varying hydrophilicity. JOURNAL OF BIOMEDICAL OPTICS 2008; 13:041314. [PMID: 19021322 DOI: 10.1117/1.2952298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The time-resolved fluorescence of photosensitizers (PSs) of varying hydrophobicities, di-and tetrasulfonated Al phthalocyanines (Al-2 and Al-4), and Photochlor (HPPH), was investigated in liposomes used as cell-mimetic models. Using frequency-and time-domain apparatus, the fluorescence lifetime, tau(fluo), was compared for PSs free in aqueous solution and in a liposome-associated state at varied temperatures (25 to 78 degrees C) and oxygen concentrations (0-190 microM). The analysis of tau(fluo) revealed different decay behaviors for the free-solution and liposome-confined PSs, most significantly for the lipophilic HPPH. Hydrophilic PS drugs (Al-4, Al-2) were less affected by the liposomal confinement, depending on the relative hydrophilicity of the compound and the consequent localization in liposomes. Changes in the emission decay due to confinement were detected as differences in the lifetime between the bulk solution and the liposome-localized PS in response to heating and deoxygenation. Specifically, hydrophilic Al-4 produced an identical lifetime trend as a function of temperature both in solu and in a liposome-confined state. Hydrophobic HPPH exhibited a fundamental transformation in its fluorescence decay kinetics, transitioning from a multiexponential (in free solution) to single-exponential (in liposome) decay. Deoxygenation resulted in a ubiquitous tau(fluo) increase for all PSs in free solution, while the opposite, a tau(fluo) decrease, occurred in all liposomal PSs.
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Affiliation(s)
- Ozzy Mermut
- National Optics Institute, Department of Biophotonics, 2740 Einstein St., Quebec, QC, Canada, G1P 4S4.
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60
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Aarts F, Hendriks T, Boerman OC, Oyen WJ, Bleichrodt RP. Hyperthermia and Fibrinolytic Therapy Do Not Improve the Beneficial Effect of Radioimmunotherapy Following Cytoreductive Surgery in Rats with Peritoneal Carcinomatosis of Colorectal Origin. Cancer Biother Radiopharm 2008; 23:301-9. [DOI: 10.1089/cbr.2007.0455] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Frits Aarts
- Department of Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Thijs Hendriks
- Department of Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Otto C. Boerman
- Department of Nuclear Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Wim J.G. Oyen
- Department of Nuclear Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Robert P. Bleichrodt
- Department of Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Hokland SL, Horsman MR. The new vascular disrupting agent combretastatin-A1-disodium-phosphate (OXi4503) enhances tumour response to mild hyperthermia and thermoradiosensitization. Int J Hyperthermia 2008; 23:599-606. [PMID: 18038290 DOI: 10.1080/02656730701739554] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
PURPOSE The aim of this study was to investigate the anti-cancer effect of the novel vascular disrupting agent (VDA), combretastatin-A1-disodium-phosphate (OXi4503), when combined with mild hyperthermia and/or radiation. MATERIALS AND METHODS A C3H mammary carcinoma was grown subcutaneously in the rear right foot of female CDF1 mice, and treated when a volume of 200 mm(3) was reached. OXi4503 was administered intra-peritoneally at variable doses. Hyperthermia was administered locally to the tumour-bearing foot using a thermostat-controlled water bath. Radiation treatment was performed locally using a conventional X-ray machine. Tumour response was assessed with either a tumour growth time or a tumour control assay. RESULTS The optimal delay between administration of 50 mg/kg of OXi4503 and hyperthermia was found to be 3 hours. The linear relationship between tumour growth time (TGT) and heating time at a specific temperature resulted in slope values between -0.003 days/min and 0.09 days/min at temperatures between 40 degrees C and 42.5 degrees C. When combined with OXi4503 this was significantly increased to 0.008 days/min and 0.03 days/min at temperatures between 39.5 degrees C and 41 degrees C, respectively. Above 41 degrees C, combined treatment did not result in significantly greater slope values. The radiation dose required to control 50% of the tumours (TCD50) was 52 Gy. Combining radiation with either heat treatment at 41.5 degrees C for 1 hour or OXi4503 reduced the TCD50 to 47 Gy and 41 Gy, respectively. Combining radiation with heat and OXi4503 further reduced the TCD50 to 37 Gy. CONCLUSIONS OXi4503 is a highly potent VDA, which is capable of significantly enhancing the anti-cancer effect of mild hyperthermia. Mild temperature thermoradiosensitization was also enhanced.
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Affiliation(s)
- S L Hokland
- Department of Experimental Clinical Oncology, Aarhus University Hospital NBG, Aarhus, Denmark.
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Dahl O, Borkamo ED, Fluge O. Current status of antivascular therapy and targeted treatment in the clinic. Int J Hyperthermia 2008; 24:97-110. [PMID: 18214773 DOI: 10.1080/02656730701824406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Antivascular and targeted therapy are now an integrated part of the treatment of myelogenous leukemias, GIST tumours, B-cell lymphomas and breast cancer. In various malignancies improved responses and prolongation of survival for several months is regularly reported. The progress in this field is relevant for hyperthermia. Heat has among other effects documented antivascular effects, and can be considered as one of the established methods in the field based on several randomised phase III studies. Hyperthermia should be considered for combination with other antiangiogenic agents.
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Affiliation(s)
- Olav Dahl
- Institute of Medicine, University of Bergen Section of Oncology, Bergen, Norway.
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Kokura S, Adachi S, Manabe E, Mizushima K, Hattori T, Okuda T, Nakabe N, Handa O, Takagi T, Naito Y, Yoshida N, Yoshikawa T. Whole body hyperthermia improves obesity-induced insulin resistance in diabetic mice. Int J Hyperthermia 2007; 23:259-65. [PMID: 17523018 DOI: 10.1080/02656730601176824] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
AIM In this study, we examined the efficacy of whole body hyperthermia (WBH) on obesity-induced insulin resistance in diabetic mice. METHODS Male db/db mice were treated with WBH 3 times per week for 12 weeks. The rectal temperature of mice reached 38.0 degrees C 5 min after heating, and was kept at 38.0 degrees C for 30 min. At the end of each week, tail snip glucose levels were determined under fasting conditions. The GLUT-4 gene expression of muscle tissue was analyzed by real-time PCR. RESULTS (1) WBH-treated db/db mice showed a significant decrease in fasting blood glucose level as compared with untreated db/db mice (p < 0.01). (2) Plasma insulin levels in untreated db/db mice at the age of 10 weeks were significantly increased compared with those of db/+ mice (p < 0.0001). On the other hand, the reduction (31%) in insulin levels in WBH-treated mice indicated improved insulin sensitivity. (3) The ability of WBH to increase insulin sensitivity was further established in glucose tolerance tests and insulin tolerance tests. (4) Urine albumin of db/db mice significantly increased compared with those of db/+ mice at 18 weeks of age (p < 0.001). This increase in urinary albumin was significantly inhibited by WBH (p < 0.01). (5) WBH up-regulated the expression of GLUT4 mRNA in skeletal muscle. CONCLUSION Although the mechanisms have not yet been completely investigated, WBH may provide a new therapeutic or preventive modality against obesity-related diseases such as T2DM and metabolic or insulin resistance syndrome.
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MESH Headings
- Albuminuria/physiopathology
- Animals
- Blood Glucose/metabolism
- Diabetes Mellitus, Type 2/physiopathology
- Diabetes Mellitus, Type 2/therapy
- Disease Models, Animal
- Fatty Acids, Nonesterified/blood
- Gene Expression Regulation
- Glucose Transporter Type 4/genetics
- Glucose Transporter Type 4/metabolism
- Hyperthermia, Induced
- Insulin/blood
- Insulin Resistance/physiology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred Strains
- Muscle, Skeletal/metabolism
- Obesity/physiopathology
- Obesity/therapy
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Triglycerides/blood
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Affiliation(s)
- Satoshi Kokura
- Biomedical Safety Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.
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Rofstad EK, Galappathi K, Mathiesen B, Ruud EBM. Fluctuating and Diffusion-Limited Hypoxia in Hypoxia-Induced Metastasis. Clin Cancer Res 2007; 13:1971-8. [PMID: 17360973 DOI: 10.1158/1078-0432.ccr-06-1967] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Most tumors develop regions with hypoxic cells during growth, owing to permanent limitations in oxygen diffusion (chronic or diffusion-limited hypoxia) and/or transient limitations in blood perfusion (acute or fluctuating hypoxia). The aim of this study was to investigate the relative significance of chronic and acute hypoxia in the development of metastatic disease. EXPERIMENTAL DESIGN D-12 and R-18 human melanoma xenografts were used as models of human cancer. D-12 tumors metastasize to the lungs, whereas R-18 tumors develop lymph node metastases. Fraction of radiobiologically hypoxic cells (HF(Rad)) was measured in individual primary tumors by using a radiobiological assay based on the paired survival curve method. Fraction of immunohistochemically hypoxic cells (HF(Imm)) was assessed in the same tumors by using a pimonidazole-based immunohistochemical assay optimized with respect to achieving selective staining of chronically hypoxic cells. HF(Imm) and the difference between HF(Rad) and HF(Imm), HF(Rad) - HF(Imm), were verified to be adequate variables for fraction of chronically hypoxic cells and fraction of acutely hypoxic cells, respectively. RESULTS Chronic as well as acute hypoxia were found to promote spontaneous metastasis of D-12 and R-18 tumors. Acute hypoxia influenced metastasis to a greater extent than chronic hypoxia, partly because the fraction of acutely hypoxic cells was larger than the fraction of chronically hypoxic cells in most tumors and partly because acutely hypoxic cells showed a higher metastatic potential than chronically hypoxic cells. CONCLUSIONS It may be beneficial to focus on fluctuating hypoxia rather than diffusion-limited hypoxia when searching for hypoxia-related prognostic variables and predictive assays.
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Affiliation(s)
- Einar K Rofstad
- Group of Radiation Biology and Tumor Physiology, Department of Radiation Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo, Norway.
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