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Kalaba P, Sanchez de la Rosa C, Möller A, Alewood PF, Muttenthaler M. Targeting the Oxytocin Receptor for Breast Cancer Management: A Niche for Peptide Tracers. J Med Chem 2024; 67:1625-1640. [PMID: 38235665 PMCID: PMC10859963 DOI: 10.1021/acs.jmedchem.3c01089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 12/07/2023] [Accepted: 12/20/2023] [Indexed: 01/19/2024]
Abstract
Breast cancer is a leading cause of death in women, and its management highly depends on early disease diagnosis and monitoring. This remains challenging due to breast cancer's heterogeneity and a scarcity of specific biomarkers that could predict responses to therapy and enable personalized treatment. This Perspective describes the diagnostic landscape for breast cancer management, molecular strategies targeting receptors overexpressed in tumors, the theranostic potential of the oxytocin receptor (OTR) as an emerging breast cancer target, and the development of OTR-specific optical and nuclear tracers to study, visualize, and treat tumors. A special focus is on the chemistry and pharmacology underpinning OTR tracer development, preclinical in vitro and in vivo studies, challenges, and future directions. The use of peptide-based tracers targeting upregulated receptors in cancer is a highly promising strategy complementing current diagnostics and therapies and providing new opportunities to improve cancer management and patient survival.
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Affiliation(s)
- Predrag Kalaba
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | | | - Andreas Möller
- QIMR
Berghofer Medical Research Institute, Brisbane, Queensland 4006, Australia
- The
Chinese University of Hong Kong, Hong Kong SAR 999077, China
| | - Paul F. Alewood
- Institute
for Molecular Bioscience, The University
of Queensland, Brisbane, Queensland 4072, Australia
| | - Markus Muttenthaler
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
- Institute
for Molecular Bioscience, The University
of Queensland, Brisbane, Queensland 4072, Australia
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2
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A novel stereotactic frame for real PET-guided biopsies: A preclinical proof-of-concept. Phys Med 2017; 41:124-128. [DOI: 10.1016/j.ejmp.2017.05.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 12/25/2022] Open
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Caliskan C, Karaca C, Ozsoy M, Akgun E, Korkut MA. Unexpected Benefit of the Positron Emission Tomography/Computed Tomography Using 18F-Fluorodeoxyglucose: Report of a Case. Indian J Surg 2016; 78:348-350. [PMID: 27994328 DOI: 10.1007/s12262-016-1477-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Accepted: 03/07/2010] [Indexed: 11/29/2022] Open
Abstract
The positron emission tomography/computed tomography (PET/CT) has been a new tool utilized in the diagnosis and staging of various cancers. However, common worldwide utilization of the PET/CT includes some economic, legal, and ethic controversies. Although PET/CT scanning can detect colorectal premalignant lesions in an early treatable stage, most governments' health care system does not pay for it as a screening test because of its economic burden. Thus, people are forced to make vital decisions about their health because of health policies of their governments. Here, we present an unusual case and discuss the utilization of PET/CT for detection of incidental neoplasms.
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Affiliation(s)
- Cemil Caliskan
- Department of General Surgery, Division of Proctology, Ege University School of Medicine, 35100 Bornova, Izmir, Turkey
| | - Can Karaca
- Department of General Surgery, Ege University School of Medicine, Izmir, Turkey
| | - Mustafa Ozsoy
- Department of General Surgery, Ege University School of Medicine, Izmir, Turkey
| | - Erhan Akgun
- Department of General Surgery, Division of Proctology, Ege University School of Medicine, 35100 Bornova, Izmir, Turkey
| | - Mustafa A Korkut
- Department of General Surgery, Division of Proctology, Ege University School of Medicine, 35100 Bornova, Izmir, Turkey
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4
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Vandenbroucke A, Foudray AMK, Olcott PD, Levin CS. Performance characterization of a new high resolution PET scintillation detector. Phys Med Biol 2010; 55:5895-911. [PMID: 20844332 DOI: 10.1088/0031-9155/55/19/018] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Performance of a new high resolution PET detection concept is presented. In this new concept, annihilation radiation enters the scintillator detectors edge-on. Each detector module comprises two 8 × 8 LYSO scintillator arrays of 0.91 × 0.91 × 1 mm(3) crystals coupled to two position-sensitive avalanche photodiodes (PSAPDs) mounted on a flex circuit. Appropriate crystal segmentation allows the recording of all three spatial coordinates of the interaction(s) simultaneously with submillimeter resolution. We report an average energy resolution of 14.6 ± 1.7% for 511 keV photons at FWHM. Coincident time resolution was determined to be 2.98 ± 0.13 ns FWHM on average. The coincidence point spread function (PSF) has an average FWHM of 0.837 ± 0.049 mm (using a 500 μm spherical source) and is uniform across the arrays. Both PSF and coincident time resolution degrade when Compton interactions are included in the data. Different blurring factors were evaluated theoretically, resulting in a calculated PSF of 0.793 mm, in good agreement with the measured value.
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Affiliation(s)
- A Vandenbroucke
- Molecular Imaging Program at Stanford, Department of Radiology, Stanford, CA, USA.
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Vidal-Sicart S, Aukema T, Vogel W, Hoefnagel C, Valdés-Olmos R. Valor añadido de la técnica en decúbito prono para el estudio con tomografía por emisión de positrones-tomografía computarizada en las pacientes con cáncer de mama. ACTA ACUST UNITED AC 2010; 29:230-5. [DOI: 10.1016/j.remn.2010.05.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 05/07/2010] [Accepted: 05/10/2010] [Indexed: 10/19/2022]
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Peng H, Levin CS. Design study of a high-resolution breast-dedicated PET system built from cadmium zinc telluride detectors. Phys Med Biol 2010; 55:2761-88. [PMID: 20400807 DOI: 10.1088/0031-9155/55/9/022] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We studied the performance of a dual-panel positron emission tomography (PET) camera dedicated to breast cancer imaging using Monte Carlo simulation. The proposed system consists of two 4 cm thick 12 x 15 cm(2) area cadmium zinc telluride (CZT) panels with adjustable separation, which can be put in close proximity to the breast and/or axillary nodes. Unique characteristics distinguishing the proposed system from previous efforts in breast-dedicated PET instrumentation are the deployment of CZT detectors with superior spatial and energy resolution, using a cross-strip electrode readout scheme to enable 3D positioning of individual photon interaction coordinates in the CZT, which includes directly measured photon depth-of-interaction (DOI), and arranging the detector slabs edge-on with respect to incoming 511 keV photons for high photon sensitivity. The simulation results show that the proposed CZT dual-panel PET system is able to achieve superior performance in terms of photon sensitivity, noise equivalent count rate, spatial resolution and lesion visualization. The proposed system is expected to achieve approximately 32% photon sensitivity for a point source at the center and a 4 cm panel separation. For a simplified breast phantom adjacent to heart and torso compartments, the peak noise equivalent count (NEC) rate is predicted to be approximately 94.2 kcts s(-1) (breast volume: 720 cm(3) and activity concentration: 3.7 kBq cm(-3)) for a approximately 10% energy window around 511 keV and approximately 8 ns coincidence time window. The system achieves 1 mm intrinsic spatial resolution anywhere between the two panels with a 4 cm panel separation if the detectors have DOI resolution less than 2 mm. For a 3 mm DOI resolution, the system exhibits excellent sphere resolution uniformity (sigma(rms)/mean) < or = 10%) across a 4 cm width FOV. Simulation results indicate that the system exhibits superior hot sphere visualization and is expected to visualize 2 mm diameter spheres with a 5:1 activity concentration ratio within roughly 7 min imaging time. Furthermore, we observe that the degree of spatial resolution degradation along the direction orthogonal to the two panels that is typical of a limited angle tomography configuration is mitigated by having high-resolution DOI capabilities that enable more accurate positioning of oblique response lines.
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Affiliation(s)
- Hao Peng
- Department of Radiology, Molecular Imaging Program, Stanford University School of Medicine, Stanford, CA 94305, USA.
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7
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Stop Breast Cancer Now! Imagining Imaging Pathways Toward Search, Destroy, Cure, and Watchful Waiting of Premetastasis Breast Cancer. Breast Cancer 2010. [DOI: 10.1007/978-1-84996-314-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Caprio MG, Cangiano A, Imbriaco M, Soscia F, Di Martino G, Farina A, Avitabile G, Pace L, Forestieri P, Salvatore M. Dual-time-point [18F]-FDG PET/CT in the diagnostic evaluation of suspicious breast lesions. Radiol Med 2009; 115:215-24. [PMID: 20017002 DOI: 10.1007/s11547-009-0491-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2008] [Accepted: 05/04/2009] [Indexed: 11/30/2022]
Abstract
PURPOSE The authors sought to evaluate whether the reacquisition of images 3 h after administration of radiotracer improves the sensitivity of fluorine-18 fluorodeoxyglucose positron emission tomography computed tomography ([(18)F]-FDG PET/CT) in patients with suspicious breast lesions. MATERIALS AND METHODS Forty-eight patients with 59 breast lesions underwent an [(18)F]-FDG PET/CT study in the prone position with a dual-time-point acquisition performed in the early phase 1 h after FDG administration (PET-1) and in the delayed phase 3 h after FDG administration (PET-2). Both examinations were evaluated qualitatively and semiquantitatively with calculation of the mean percentage variation of the standard uptake values (Delta% SUV(max)) between PET-1 and PET-2. All lesions with an SUV(max) >or=2.5 at PET-1 or a reduction in SUV between PET-1 and PET-2 were considered benign. The definitive histopathological diagnosis was available for all patients included in the study. RESULTS The dual-time-point acquisition of [(18)F]-FDG PET/CT displayed an accuracy of 85% for lesions with an SUV(max) >or=2.5 and/or positive Delta% SUV(max), with sensitivity and specificity values of 81% and 100% compared with 69%, 63% (both p<0.001) and 100% (p=n.s.), respectively, for the single-time-point acquisition. Malignant lesions showed an increase in FDG uptake between PET-1 and PET-2, with a Delta% SUV(max) of 10+/-7 (p<0.04). In contrast, benign lesions showed a decrease in SUV between PET-1 and PET-2, with a Delta% SUV(max) of -21+/-7 (p<0.001). CONCLUSIONS The delayed repeat acquisition of PET images improves the accuracy of [(18)F]-FDG PET/CT in patients with suspicious breast lesions with respect to the single-time-point acquisition. In addition, malignant breast lesions displayed an increase in FDG uptake over time, whereas benign lesions showed a reduction. These variations in FDG uptake between PET-1 and PET-2 are a reliable parameter that can be used for differentiating between benign and malignant breast lesions.
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Affiliation(s)
- M G Caprio
- Fondazione S. D. N., Istituto di Ricerca Diagnostica e Nucleare, Via Pansini 5, 80131, Napoli, Italy
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Abstract
CT arthrography and MR arthrography are accurate methods for the study of surface cartilage lesions and cartilage loss. They also provide information on subchondral bone and marrow changes, and ligaments and meniscal lesions that can be associated with osteoarthritis. Nuclear medicine also offers new insights in the assessment of the disease. This article discusses the strengths and limitations of CT arthrography and MR arthrography. It also highlights nuclear medicine methods that may be relevant to the study of osteoarthritis in research and clinical practice.
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Abstract
The care of patients with breast cancer has become increasingly complex with advancements in diagnostic modalities, surgical approaches, and adjuvant treatments. A multidisciplinary approach to breast cancer care is essential to the successful integration of available therapies. This article addresses the key components of multidisciplinary breast cancer care, with a special emphasis on new and emerging approaches over the past 10 years in the fields of diagnostics, surgery, radiation, medical oncology, and plastic surgery.
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Oliveira N, Matela N, Bugalho R, Ferreira N, Almeida P. Optimization of 2D image reconstruction for positron emission mammography using IDL. Comput Biol Med 2009; 39:119-29. [PMID: 19162262 DOI: 10.1016/j.compbiomed.2008.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Revised: 09/24/2008] [Accepted: 11/23/2008] [Indexed: 11/27/2022]
Abstract
The Clear-PEM system is a prototype machine for Positron Emission Mammography (PEM) under development within the Portuguese PET-Mammography consortium. We have embedded 2D image reconstruction algorithms implemented in IDL within the prototype's image analysis package. The IDL implementation of these algorithms proved to be accurate and computationally efficient. In this paper, we present the implementation of the MLEM, OSEM and ART 2D iterative image reconstruction algorithms for PEM using IDL. C and IDL implementations are compared using realistic Monte Carlo simulated data. We show that IDL can be used for the easy implementation of image reconstruction algorithms for emission tomography.
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Affiliation(s)
- N Oliveira
- Universidade de Lisboa, Instituto de Biofísica e Engenharia Biomédica, Portugal
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Imbriaco M, Caprio MG, Limite G, Pace L, De Falco T, Capuano E, Salvatore M. Dual-Time-Point 18F-FDG PET/CT Versus Dynamic Breast MRI of Suspicious Breast Lesions. AJR Am J Roentgenol 2008; 191:1323-1330. [DOI: 10.2214/ajr.07.3439] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- Massimo Imbriaco
- Dipartimento di Scienze Biomorfologiche e Funzionali, Università degli Studi di Napoli Federico II, Via Posillipo 196, 80123, Naples, Italy
| | - Maria Grazia Caprio
- National Research Council Napoli, Institute of Bio-structure and Bio-imaging, SDN Foundation, Naples, Italy
| | - Gennaro Limite
- Dipartimento di Chirurgia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - Leonardo Pace
- Dipartimento di Scienze Biomorfologiche e Funzionali, Università degli Studi di Napoli Federico II, Via Posillipo 196, 80123, Naples, Italy
- National Research Council Napoli, Institute of Bio-structure and Bio-imaging, SDN Foundation, Naples, Italy
| | - Teresa De Falco
- National Research Council Napoli, Institute of Bio-structure and Bio-imaging, SDN Foundation, Naples, Italy
| | - Ermanno Capuano
- Dipartimento di Scienze Biomorfologiche e Funzionali, Università degli Studi di Napoli Federico II, Via Posillipo 196, 80123, Naples, Italy
| | - Marco Salvatore
- Dipartimento di Scienze Biomorfologiche e Funzionali, Università degli Studi di Napoli Federico II, Via Posillipo 196, 80123, Naples, Italy
- National Research Council Napoli, Institute of Bio-structure and Bio-imaging, SDN Foundation, Naples, Italy
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Lavayssière R, Cabée AE, Filmont JE. Positron Emission Tomography (PET) and breast cancer in clinical practice. Eur J Radiol 2008; 69:50-8. [PMID: 18814983 DOI: 10.1016/j.ejrad.2008.07.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2008] [Accepted: 07/28/2008] [Indexed: 10/21/2022]
Abstract
The landscape of oncologic practice has changed deeply during the past few years and there is now a need, through a multidisciplinary approach, for imaging to provide accurate evaluation of morphology and function and to guide treatment (Image Guided Therapy). Increasing emphasis has been put on Position Emission Tomography (PET) role in various cancers among clinicians [Juweid ME, Cheson BD. Positron-emission tomography and assessment of cancer therapy. N Engl J Med 2006;354:496-507; Koh DM, Cook GJR, Husband JE. New horizons in oncologic imaging. N Engl J Med 2003;348:25; Tafra L, positron emission tomography (PET) and mammography (PEM) for breast cancer: importance to surgeons. Ann Surg Oncol 2006;14(1):3-13] and patients despite a general context of healthcare expenditure limitation. Positron Emission Tomography has currently a limited role in breast cancer, but also general radiologists and specialists should be aware of these indications, especially when staging aggressive cancers and looking for recurrence. Currently, the hybrid systems associating PET and Computed Tomography (CT) and in the same device [Rohren EM, Turkington TG, Coleman RE. Clinical applications of PET in oncology. Radiology 2004;231:305-32; Blodgett TM, Meltzer CM, Townsend DW. PET/CT: form and function. Radiology 2007;242:360-85; von Schulthess GK, Steinert HC, Hany TF. Integrated PET/CT: current applications and futures directions. Radiology 2006;238(2):405-22], or PET-CT, are more commonly used and the two techniques are adding their potentialities. Other techniques, MRI in particular, may also compete with PET in some instance and as far as ionizing radiations dose limitation is considered, some breast cancers becoming some form of a chronic disease. Breast cancer is a very complex, non-uniform, disease and molecular imaging at large may contribute to a better knowledge and to new drugs development. Ongoing research, Positron Emission Mammography (PEM) and new tracers, are likely to bring improvements in patient care [Kelloff GJ, Hoffman JM, Johnson B, et al. Progress and promise of FDG-PET Imaging for cancer patient management and oncologic drug development. Clin Cancer Res 2005;1(April (8)): 2005].
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Affiliation(s)
- Robert Lavayssière
- Centre d'Imagerie Paris-Nord, 1, avenue Charles Péguy, 95200 Sarcelles, France.
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Marulanda GA, Mont MA, Lucci A, Letson GD, Khakpour N. Orthopedic surgery implications of breast cancer. Expert Rev Anticancer Ther 2008; 8:949-56. [PMID: 18533804 DOI: 10.1586/14737140.8.6.949] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Breast cancer is the most common malignancy and the second leading cause of death in women. The metastatic involvement of bone denotes disease progression and decreased survival. Controversy exists regarding the exact pathophysiologic mechanism of metastasis and the different pathways that determine an osteoblastic versus osteoclastic bone compromise. Several breakthrough advances in imaging techniques aid in the detection, staging and follow-up of bone metastases. Although usually responsive to hormonal therapy and pharmacologic interventions, skeletal metastases often require some type of surgical intervention. Orthopedic surgeons should establish an active role in the multidisciplinary treatment of patients with breast cancer.
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Affiliation(s)
- German A Marulanda
- Department of Orthopedics & Sports Medicine, University of South Florida, 3500 E. Fletcher Avenue, Suite 511, MDC106. Tampa, FL 33613, USA.
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