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Rubí S, Bibiloni P, Villar M, Brell M, Valiente M, Galmés M, Toscano M, Matheu G, Chinchilla JL, Molina J, Luis Valera J, Ríos Á, López M, Peña C. Full kinetic modeling analysis of [ 18F]fluorocholine Positron Emission Tomography (PET) at initial diagnosis of high-grade glioma. Neuroimage Clin 2024; 42:103616. [PMID: 38763039 PMCID: PMC11126967 DOI: 10.1016/j.nicl.2024.103616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 04/25/2024] [Accepted: 05/05/2024] [Indexed: 05/21/2024]
Abstract
PURPOSE The main objective was to characterize the tracer uptake kinetics of [18F]fluoromethylcholine ([18F]F-CHO) in high-grade gliomas (HGG) through a full PET kinetic modeling approach. Secondarily, we aimed to explore the relationship between the PET uptake measures and the HGG molecular features. MATERIALS AND METHODS Twenty-four patients with a suspected diagnosis of HGG were prospectively included. They underwent a dynamic brain [18F]F-CHO-PET/CT, from which a tumoral time-activity curve was extracted. The plasma input function was obtained through arterial blood sampling with metabolite correction. These data were fitted to 1- and 2-tissue-compartment models, the best of which was selected through the Akaike information criterion. We assessed the correlation between the kinetic parameters and the conventional static PET metrics (SUVmax, SUVmean and tumor-to-background ratio TBR). We explored the association between the [18F]F-CHO-PET quantitative parameters and relevant molecular biomarkers in HGG. RESULTS Tumoral time-activity curves in all patients showed a rapid rise of [18F]F-CHO uptake followed by a plateau-like shape. Best fits were obtained with near-irreversible 2-tissue-compartment models. The perfusion-transport constant K1 and the net influx rate Ki showed strong correlation with SUVmax (r = 0.808-0.861), SUVmean (r = 0.794-0.851) and TBR (r = 0.643-0.784), p < 0.002. HGG was confirmed in 21 patients, of which those with methylation of the O-6-methylguanine-DNA methyltransferase (MGMT) gene promoter showed higher mean Ki (p = 0.020), K1 (p = 0.025) and TBR (p = 0.001) than the unmethylated ones. CONCLUSION [18F]F-CHO uptake kinetics in HGG is best explained by a 2-tissue-compartment model. The conventional static [18F]F-CHO-PET measures have been validated against the perfusion-transport constant (K1) and the net influx rate (Ki) derived from kinetic modeling. A relationship between [18F]F-CHO uptake rate and MGMT methylation is suggested but needs further confirmation.
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Affiliation(s)
- Sebastià Rubí
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain; Department of Medicine, University of the Balearic Islands, E-07122 Palma, Spain; Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain.
| | - Pedro Bibiloni
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain; SCOPIA Research Group, University of the Balearic Islands, E-07122 Palma, Spain
| | - Marina Villar
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Marta Brell
- Department of Medicine, University of the Balearic Islands, E-07122 Palma, Spain; Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain; Department of Neurosurgery, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Manuel Valiente
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Margalida Galmés
- Department of Nuclear Medicine, Hospital Quironsalud Palmaplanas, 07010 Palma, Spain
| | - María Toscano
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Gabriel Matheu
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain; Department of Pathology, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - José Luis Chinchilla
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Jesús Molina
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - José Luis Valera
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain; Department of Pulmonology, Hospital Universitari Son Espases, 07010 Palma, Spain
| | - Ángel Ríos
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
| | - Meritxell López
- Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
| | - Cristina Peña
- Department of Nuclear Medicine, Hospital Universitari Son Espases, 07010 Palma, Spain; Health Research Institute of the Balearic Islands (IdISBa), 07010 Palma, Spain
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2
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Majeed A, Tahir Ul Qamar M, Maryam A, Mirza MU, Alhussain L, Al Otaibi SO, Almatroudi A, Allemailem KS, Alrumaihi F, Aloliqi AA, Alshehri FF. Structural insights into the mechanism of resistance to bicalutamide by the clinical mutations in androgen receptor in chemo-treatment resistant prostate cancer. J Biomol Struct Dyn 2024; 42:1181-1190. [PMID: 37144757 DOI: 10.1080/07391102.2023.2208203] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/28/2023] [Indexed: 05/06/2023]
Abstract
Despite advanced diagnosis and detection technologies, prostate cancer (PCa) is the most prevalent neoplasms in males. Dysregulation of the androgen receptor (AR) is centrally involved in the tumorigenesis of PCa cells. Acquisition of drug resistance due to modifications in AR leads to therapeutic failure and relapse in PCa. An overhaul of comprehensive catalogues of cancer-causing mutations and their juxta positioning on 3D protein can help in guiding the exploration of small drug molecules. Among several well-studied PCa-specific mutations, T877A, T877S and H874Y are the most common substitutions in the ligand-binding domain (LBD) of the AR. In this study, we combined structure as well as dynamics-based in silico approaches to infer the mechanistic effect of amino acid substitutions on the structural stability of LBD. Molecular dynamics simulations allowed us to unveil a possible drug resistance mechanism that acts through structural alteration and changes in the molecular motions of LBD. Our findings suggest that the resistance to bicalutamide is partially due to increased flexibility in the H12 helix, which disturbs the compactness, thereby reducing the affinity for bicalutamide. In conclusion, the current study helps in understanding the structural changes caused by mutations and could assist in the drug development process.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Abdul Majeed
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Muhammad Tahir Ul Qamar
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Arooma Maryam
- Department of Biochemistry and Molecular Biotechnology, UMass Chan Medical School, Worcester, MA, USA
| | - Muhammad Usman Mirza
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada
| | - Laila Alhussain
- Department of Biology, College of Science, Qassim University, Buraydah, Saudi Arabia
| | - Seham Obaid Al Otaibi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Ahmad Almatroudi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Khaled S Allemailem
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Faris Alrumaihi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Abdulaziz A Aloliqi
- Department of Medical Biotechnology, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Faez Falah Alshehri
- Department of Medical Laboratories, College of Applied Medical Sciences, Shaqra University, Aldawadmi, Saudi Arabia
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3
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Sardaro A, Mammucci P, Pisani AR, Rubini D, Nappi AG, Bardoscia L, Rubini G. Intracranial Solitary Fibrous Tumor: A "New" Challenge for PET Radiopharmaceuticals. J Clin Med 2022; 11:jcm11164746. [PMID: 36012988 PMCID: PMC9410498 DOI: 10.3390/jcm11164746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Solitary fibrous tumor (SFT) of the central nervous system, previously named and classified with the term hemangiopericytoma (HPC), is rare and accounts for less than 1% of all intracranial tumors. Despite its benign nature, it has a malignant behavior due to the high rate of recurrence and distant metastasis, occurring in up to 50% of cases. Surgical resection of the tumor is the treatment of choice. Radiotherapy represents the gold standard in the case of post-surgery residual disease, relapse, and distant metastases. In this context, imaging plays a crucial role in identifying the personalized therapeutic decision for each patient. Although the referring imaging approach in SFT is morphologic, an emerging role of positron emission tomography (PET) has been reported in the literature. However, there is still a debate on which radiotracers have the best accuracy for studying these uncommon tumors because of the histological or biological heterogeneity of SFT.
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Affiliation(s)
- Angela Sardaro
- Section of Radiology and Radiation Oncology, Interdisciplinary Department of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Paolo Mammucci
- Section of Nuclear Medicine, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Antonio Rosario Pisani
- Section of Nuclear Medicine, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
- Correspondence: ; Tel.: +39-080-5594388
| | - Dino Rubini
- Section of Nuclear Medicine, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Anna Giulia Nappi
- Section of Nuclear Medicine, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Lilia Bardoscia
- Radiation Oncology Unit, S. Luca Hospital, Healthcare Company Tuscany Nord Ovest, 55100 Lucca, Italy
| | - Giuseppe Rubini
- Section of Nuclear Medicine, Interdisciplinary Department of Medicine, University of Bari Aldo Moro, Piazza Giulio Cesare 11, 70124 Bari, Italy
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4
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PET imaging in renal and bladder cancers. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00139-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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5
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Licitra F, Giovannelli P, Di Donato M, Monaco A, Galasso G, Migliaccio A, Castoria G. New Insights and Emerging Therapeutic Approaches in Prostate Cancer. Front Endocrinol (Lausanne) 2022; 13:840787. [PMID: 35222290 PMCID: PMC8873523 DOI: 10.3389/fendo.2022.840787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Prostate cancer is the second most frequently diagnosed cancer in men and several therapeutic approaches are currently available for patient's care. Although the androgen receptor status represents a good predictor of response to androgen deprivation therapy, prostate cancer frequently becomes resistant to this approach and spreads. The molecular mechanisms that contribute to progression and drug-resistance of this cancer remain still debated. However, few therapeutic options are available for patient's management, at this stage. Recent years have seen a great expansion of the studies concerning the role of stromal-epithelial interactions and tumor microenvironment in prostate cancer progression. The findings so far collected have provided new insights into diagnostic and clinical management of prostate cancer patients. Further, new fascinating aspects concerning the intersection of the androgen receptor with survival factors as well as calcium channels have been reported in cultured prostate cancer cells and mouse models. The results of these researches have opened the way for a better understanding of the basic mechanisms involved in prostate cancer invasion and drug-resistance. They have also significantly expanded the list of new biomarkers and druggable targets in prostate cancer. The primary aim of this manuscript is to provide an update of these issues, together with their translational aspects. Exploiting the power of novel promising therapeutics would increase the success rate in the diagnostic path and clinical management of patients with advanced disease.
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6
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ChoK-Full of Potential: Choline Kinase in B Cell and T Cell Malignancies. Pharmaceutics 2021; 13:pharmaceutics13060911. [PMID: 34202989 PMCID: PMC8234087 DOI: 10.3390/pharmaceutics13060911] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/09/2021] [Accepted: 06/17/2021] [Indexed: 12/20/2022] Open
Abstract
Aberrant choline metabolism, characterized by an increase in total choline-containing compounds, phosphocholine and phosphatidylcholine (PC), is a metabolic hallmark of carcinogenesis and tumor progression. This aberration arises from alterations in metabolic enzymes that control PC biosynthesis and catabolism. Among these enzymes, choline kinase α (CHKα) exhibits the most frequent alterations and is commonly overexpressed in human cancers. CHKα catalyzes the phosphorylation of choline to generate phosphocholine, the first step in de novo PC biosynthesis. CHKα overexpression is associated with the malignant phenotype, metastatic capability and drug resistance in human cancers, and thus has been recognized as a robust biomarker and therapeutic target of cancer. Of clinical importance, increased choline metabolism and CHKα activity can be detected by non-invasive magnetic resonance spectroscopy (MRS) or positron emission tomography/computed tomography (PET/CT) imaging with radiolabeled choline analogs for diagnosis and treatment monitoring of cancer patients. Both choline-based MRS and PET/CT imaging have also been clinically applied for lymphoid malignancies, including non-Hodgkin lymphoma, multiple myeloma and central nervous system lymphoma. However, information on how choline kinase is dysregulated in lymphoid malignancies is very limited and has just begun to be unraveled. In this review, we provide an overview of the current understanding of choline kinase in B cell and T cell malignancies with the goal of promoting future investigation in this area.
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7
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The Role of Molecular Imaging in a Muscle-Invasive Bladder Cancer Patient: A Narrative Review in the Era of Multimodality Treatment. Diagnostics (Basel) 2021; 11:diagnostics11050863. [PMID: 34064755 PMCID: PMC8151158 DOI: 10.3390/diagnostics11050863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/04/2021] [Accepted: 05/08/2021] [Indexed: 11/30/2022] Open
Abstract
Diagnostic imaging in bladder cancer plays an important role since it is needed from pretreatment staging to follow-up, but a morphological evaluation performed with both CT and MRI showed low sensitivities and specificities in detecting pathologic lymph nodes, due to the occurrence of false positive results. Implementation of functional information provided by PET/CT could be a determinant in the management of patients with muscle-invasive bladder cancer. A focus on the role of 18F-FDG PET/CT and alternative tracers in patients with muscle-invasive bladder cancer is provided in this analysis in order to outline its potential applications in staging settings and response evaluation after neoadjuvant chemotherapy.
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8
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Chen J, Huang Y, Tang Z, Li M, Ling X, Liao J, Zhou X, Fang S, Zhao H, Zhong W, Yuan X. Genome-Scale CRISPR-Cas9 Transcriptional Activation Screening in Metformin Resistance Related Gene of Prostate Cancer. Front Cell Dev Biol 2021; 8:616332. [PMID: 33575255 PMCID: PMC7870801 DOI: 10.3389/fcell.2020.616332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/09/2020] [Indexed: 01/01/2023] Open
Abstract
Metformin is a classic type II diabetes drug which possesses anti-tumor properties for various cancers. However, different cancers do not respond to metformin with the same effectiveness or acquire resistance. Thus, searching for vulnerabilities of metformin-resistant prostate cancer is a promising strategy to improve the therapeutic efficiency of the drug. A genome-scale CRISPR-Cas9 activation library search targeting 23,430 genes was conducted to identify the genes that confer resistance to metformin in prostate cancer cells. Candidate genes were selected by total reads of sgRNA and sgRNA diversity, and then a CCK8 assay was used to verify their resistance to metformin. Interestingly, we discovered that the activation of ECE1, ABCA12, BPY2, EEF1A1, RAD9A, and NIPSNAP1 contributed to in vitro resistance to metformin in DU145 and PC3 cell lines. Notably, a high level of RAD9A, with poor prognosis in PCa, was the most significant gene in the CCK8 assay. Furthermore, we discerned the tumor immune microenvironment with RAD9A expression by CIBERSORT. These results suggested that a high level of RAD9A may upregulate regulatory T cells to counterbalance metformin in the tumor immune microenvironment.
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Affiliation(s)
- Jiahong Chen
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Yaqiang Huang
- Department of Urology, Zhongshan City People's Hospital, Zhongshan, China
| | - Zhenfeng Tang
- Guangdong Key Laboratory of Urology, Department of Urology, Minimally Invasive Surgery Center, Guangzhou Urology Research Institute, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Maozhang Li
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Xiaohui Ling
- Reproductive Medicine Centre, Huizhou Central People's Hospital, Guangdong Medical University, Huizhou, China
| | - Jinxian Liao
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Xiaobo Zhou
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Shumin Fang
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
| | - Haibo Zhao
- Guangdong Provincial Institute of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Urology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Weide Zhong
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China.,Guangdong Key Laboratory of Clinical Molecular Medicine and Diagnostics, Department of Urology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xia Yuan
- Department of Urology, Huizhou Municipal Central Hospital, Huizhou, China
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Abstract
Focal nodular fat sparing of the liver may show, on PET/CT imaging, prominent tracer uptake over a background of less metabolic features of steatosis. This finding, already reported with F-FDG, may mimic primary or secondary neoplasms of the liver. The authors present an additional case of nodular fat-sparing hepatic parenchyma exhibiting C-choline avidity during PET/CT assessment for biochemical recurrence of prostate cancer.
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10
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Briganti V, Cuccurullo V, Berti V, Di Stasio GD, Linguanti F, Mungai F, Mansi L. 99mTc-EDDA/HYNIC-TOC is a New Opportunity in Neuroendocrine Tumors of the Lung (and in other Malignant and Benign Pulmonary Diseases). Curr Radiopharm 2020; 13:166-176. [PMID: 31886756 PMCID: PMC8193811 DOI: 10.2174/1874471013666191230143610] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/11/2019] [Accepted: 11/11/2019] [Indexed: 12/25/2022]
Abstract
Neuroendocrine tumors (NETs) consist of a relatively rare spectrum of malignancies that can arise from neuroendocrine cells; lung NETs (L-NETs) represent about 25% of primary lung neoplasm and 10% of all carcinoid tumors. Diagnostic algorithm usually takes into consideration chest Xray, contrast-enhanced CT and MRI. Nuclear medicine plays a crucial role in the detection and correct assessment of neoplastic functional status as it provides in vivo metabolic data related to the overexpression of Somatostatin Receptors (SSTRs) and also predicting response to peptide receptor radionuclide therapy (PRRT). 111In-Pentreotide (Octreoscan®) is commercially available for imaging of neuroendocrine tumors, their metastases and the management of patients with NETs. More recently, 99mTc-EDDA/HYNIC-TOC(Tektrotyd®) was introduced into the market and its use has been approved for imaging of patients with L-NETs and other SSTR-positive tumors. 99mTc-EDDA/HYNIC-TOC could also represent a good alternative to 68Ga-DOTA-peptides (DOTA-TOC, DOTA-NOC, DOTATATE) in hospitals or centers where PET/CT or 68Ge/68Ga generators are not available. When compared to 111In-Pentetreotide, Tektrotyd® showed slightly higher sensitivity, in the presence of higher imaging quality and lower radiation exposure for patients. Interesting perspectives depending on the kinetic analysis allowed by Tektrotyd® may be obtained in differential diagnosis of non-small cells lung cancer (NSCLC) versus small cells lung cancer (SCLC) and NETs. An interesting perspective could be also associated with a surgery radio-guided by Tektrotyd® in operable lung tumors, including either NETs and NSCLC.
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Affiliation(s)
| | - Vincenzo Cuccurullo
- Address correspondence to this author at the Medicina Nucleare, Università della Campania “Luigi Vanvitelli”, P.zza Miraglia 2, 80138 Napoli, Italy; E-mail:
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11
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Gokhale S, Lu W, Zhu S, Liu Y, Hart RP, Rabinowitz JD, Xie P. Elevated Choline Kinase α-Mediated Choline Metabolism Supports the Prolonged Survival of TRAF3-Deficient B Lymphocytes. THE JOURNAL OF IMMUNOLOGY 2019; 204:459-471. [PMID: 31826940 DOI: 10.4049/jimmunol.1900658] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 11/13/2019] [Indexed: 12/27/2022]
Abstract
Specific deletion of the tumor suppressor TRAF3 from B lymphocytes in mice leads to the prolonged survival of mature B cells and expanded B cell compartments in secondary lymphoid organs. In the current study, we investigated the metabolic basis of TRAF3-mediated regulation of B cell survival by employing metabolomic, lipidomic, and transcriptomic analyses. We compared the polar metabolites, lipids, and metabolic enzymes of resting splenic B cells purified from young adult B cell-specific Traf3 -/- and littermate control mice. We found that multiple metabolites, lipids, and enzymes regulated by TRAF3 in B cells are clustered in the choline metabolic pathway. Using stable isotope labeling, we demonstrated that phosphocholine and phosphatidylcholine biosynthesis was markedly elevated in Traf3 -/- mouse B cells and decreased in TRAF3-reconstituted human multiple myeloma cells. Furthermore, pharmacological inhibition of choline kinase α, an enzyme that catalyzes phosphocholine synthesis and was strikingly increased in Traf3 -/- B cells, substantially reversed the survival phenotype of Traf3 -/- B cells both in vitro and in vivo. Taken together, our results indicate that enhanced phosphocholine and phosphatidylcholine synthesis supports the prolonged survival of Traf3 -/- B lymphocytes. Our findings suggest that TRAF3-regulated choline metabolism has diagnostic and therapeutic value for B cell malignancies with TRAF3 deletions or relevant mutations.
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Affiliation(s)
- Samantha Gokhale
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, NJ 08854
| | - Wenyun Lu
- Department of Chemistry, Princeton University, Princeton, NJ 08544.,Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544.,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901; and
| | - Sining Zhu
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854.,Graduate Program in Cellular and Molecular Pharmacology, Rutgers University, Piscataway, NJ 08854
| | - Yingying Liu
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854
| | - Ronald P Hart
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854.,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901; and.,W.M. Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, NJ 08854
| | - Joshua D Rabinowitz
- Department of Chemistry, Princeton University, Princeton, NJ 08544.,Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544.,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901; and
| | - Ping Xie
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ 08854; .,Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901; and
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The Molecular Effects of Ionizing Radiations on Brain Cells: Radiation Necrosis vs. Tumor Recurrence. Diagnostics (Basel) 2019; 9:diagnostics9040127. [PMID: 31554255 PMCID: PMC6963489 DOI: 10.3390/diagnostics9040127] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/13/2019] [Accepted: 09/20/2019] [Indexed: 12/12/2022] Open
Abstract
The central nervous system (CNS) is generally resistant to the effects of radiation, but higher doses, such as those related to radiation therapy, can cause both acute and long-term brain damage. The most important results is a decline in cognitive function that follows, in most cases, cerebral radionecrosis. The essence of radio-induced brain damage is multifactorial, being linked to total administered dose, dose per fraction, tumor volume, duration of irradiation and dependent on complex interactions between multiple brain cell types. Cognitive impairment has been described following brain radiotherapy, but the mechanisms leading to this adverse event remain mostly unknown. In the event of a brain tumor, on follow-up radiological imaging often cannot clearly distinguish between recurrence and necrosis, while, especially in patients that underwent radiation therapy (RT) post-surgery, positron emission tomography (PET) functional imaging, is able to differentiate tumors from reactive phenomena. More recently, efforts have been done to combine both morphological and functional data in a single exam and acquisition thanks to the co-registration of PET/MRI. The future of PET imaging to differentiate between radionecrosis and tumor recurrence could be represented by a third-generation PET tracer already used to reveal the spatial extent of brain inflammation. The aim of the following review is to analyze the effect of ionizing radiations on CNS with specific regard to effect of radiotherapy, focusing the attention on the mechanism underling the radionecrosis and the brain damage, and show the role of nuclear medicine techniques to distinguish necrosis from recurrence and to early detect of cognitive decline after treatment.
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13
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Estrogen Receptors in Epithelial-Mesenchymal Transition of Prostate Cancer. Cancers (Basel) 2019; 11:cancers11101418. [PMID: 31548498 PMCID: PMC6826537 DOI: 10.3390/cancers11101418] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 01/02/2023] Open
Abstract
Prostate cancer (PC) remains a widespread malignancy in men. Since the androgen/androgen receptor (AR) axis is associated with the pathogenesis of prostate cancer, suppression of AR-dependent signaling by androgen deprivation therapy (ADT) still represents the primary intervention for this disease. Despite the initial response, prostate cancer frequently develops resistance to ADT and progresses. As such, the disease becomes metastatic and few therapeutic options are available at this stage. Although the majority of studies are focused on the role of AR signaling, compelling evidence has shown that estrogens and their receptors control prostate cancer initiation and progression through a still debated mechanism. Epithelial versus mesenchymal transition (EMT) is involved in metastatic spread as well as drug-resistance of human cancers, and many studies on the role of this process in prostate cancer progression have been reported. We discuss here the findings on the role of estrogen/estrogen receptor (ER) axis in epithelial versus mesenchymal transition of prostate cancer cells. The pending questions concerning this issue are presented, together with the impact of the available data in clinical management of prostate cancer patients.
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Cuccurullo V, Di Stasio GD, Mansi L. Physiopathological Premises to Nuclear Medicine Imaging of Pancreatic Neuroendocrine Tumours. Curr Radiopharm 2019; 12:98-106. [DOI: 10.2174/1874471012666190206094555] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 02/19/2018] [Accepted: 10/29/2018] [Indexed: 02/07/2023]
Abstract
Background:
Pancreatic Neuroendocrine Tumors (P-NETs) are a challenge in terms of both
diagnosis and therapy; morphological studies need to be frequently implemented with nonstandard
techniques such as Endoscopic Ultrasounds, Dynamic CT, and functional Magnetic Resonance.
Discussion:
The role of nuclear medicine, being scarcely sensitive F-18 Fluorodeoxyglucose, is mainly
based on the over-expression of Somatostatin Receptors (SSTR) on neuroendocrine tumor cells surface.
Therefore, SSTR can be used as a target for both diagnosis, using radiotracers labeled with gamma or
positron emitters, and therapy. SSTRs subtypes are capable of homo and heterodimerization in specific
combinations that alter both the response to ligand activation and receptor internalization.
Conclusion:
Although agonists usually provide efficient internalization, also somatostatin antagonists
(SS-ANTs) could be used for imaging and therapy. Peptide Receptor Radionuclide Therapy (PRRT)
represents the most successful option for targeted therapy. The theranostic model based on SSTR does
not work in insulinoma, in which different radiotracers such as F-18 FluoroDOPA or tracers for the
glucagon-like peptide-1 receptor have to be preferred.
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Affiliation(s)
- Vincenzo Cuccurullo
- Nuclear Medicine Unit, Department of Clinical and Experimental Medicine "F.Magrassi, A.Lanzara" – Universita della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Giuseppe Danilo Di Stasio
- Nuclear Medicine Unit, Department of Clinical and Experimental Medicine "F.Magrassi, A.Lanzara" – Universita della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Luigi Mansi
- Nuclear Medicine Unit, Department of Clinical and Experimental Medicine "F.Magrassi, A.Lanzara" – Universita della Campania "Luigi Vanvitelli", Napoli, Italy
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15
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Di Donato M, Cernera G, Migliaccio A, Castoria G. Nerve Growth Factor Induces Proliferation and Aggressiveness In Prostate Cancer Cells. Cancers (Basel) 2019; 11:E784. [PMID: 31174415 PMCID: PMC6627659 DOI: 10.3390/cancers11060784] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/05/2019] [Accepted: 06/06/2019] [Indexed: 12/20/2022] Open
Abstract
Resistance to hormone therapy and disease progression is the major challenge in clinical management of prostate cancer (PC). Drugs currently used in PC therapy initially show a potent antitumor effects, but PC gradually develops resistance, relapses and spreads. Most patients who fail primary therapy and have recurrences eventually develop castration-resistant prostate cancer (CRPC), which is almost incurable. The nerve growth factor (NGF) acts on a variety of non-neuronal cells by activating the NGF tyrosine-kinase receptor, tropomyosin receptor kinase A (TrkA). NGF signaling is deregulated in PC. In androgen-dependent PC cells, TrkA mediates the proliferative action of NGF through its crosstalk with the androgen receptor (AR). Epithelial PC cells, however, acquire the ability to express NGF and TrkA, as the disease progresses, indicating a role for NGF/TrkA axis in PC progression and androgen-resistance. We here report that once activated by NGF, TrkA mediates proliferation, invasiveness and epithelial-mesenchymal transition (EMT) in various CRPC cells. NGF promotes organoid growth in 3D models of CRPC cells, and specific inhibition of TrkA impairs all these responses. Thus TrkA represents a new biomarker to target in CRPC.
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Affiliation(s)
- Marzia Di Donato
- Department of Precision Medicine-University of Campania 'L. Vanvitelli'-via L. De Crecchio, 7-80138 Naples, Italy.
| | - Gustavo Cernera
- Department of Precision Medicine-University of Campania 'L. Vanvitelli'-via L. De Crecchio, 7-80138 Naples, Italy.
| | - Antimo Migliaccio
- Department of Precision Medicine-University of Campania 'L. Vanvitelli'-via L. De Crecchio, 7-80138 Naples, Italy.
| | - Gabriella Castoria
- Department of Precision Medicine-University of Campania 'L. Vanvitelli'-via L. De Crecchio, 7-80138 Naples, Italy.
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16
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Bergeret S, Charbit J, Ansquer C, Bera G, Chanson P, Lussey-Lepoutre C. Novel PET tracers: added value for endocrine disorders. Endocrine 2019; 64:14-30. [PMID: 30875057 DOI: 10.1007/s12020-019-01895-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 03/05/2019] [Indexed: 02/07/2023]
Abstract
Nuclear medicine has been implicated in the diagnosis and treatment of endocrine disorders for several decades. With recent development of PET tracers, functional imaging now plays a major role in endocrine tumors enabling with high performance to their localization, characterization, and staging. Besides 18F-FDG, which may be used in the management and follow-up of endocrine tumors, new tracers have emerged, such as 18F-DOPA for neuroendocrine tumors (NETs) (medullary thyroid carcinoma, pheochromocytomas and paragangliomas and well-differentiated NETs originating from the midgut) and 18F-Choline in the field of primary hyperparathyroidism. Moreover, some peptides such as somatostatin analogs can also be used for peptide receptor radionuclide therapy. In this context, Gallium-68 labeled somatostatin analogs (68Ga-SSA) can help to tailor therapeutic choices and follow the response to treatment in the so-called "theranostic" approach. This review emphasizes the usefulness of these three novel PET tracers (18F-Choline, 18F-FDOPA, and 68Ga-SSA) for primary hyperparathyroidism and neuroendocrine tumors.
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Affiliation(s)
- Sébastien Bergeret
- Sorbonne University, Nuclear Medicine Department, Pitié-Salpêtrière Hospital, 47-83 Bd de l'Hôpital, 75013, Paris, France
| | - Judith Charbit
- Sorbonne University, Nuclear Medicine Department, Pitié-Salpêtrière Hospital, 47-83 Bd de l'Hôpital, 75013, Paris, France
| | - Catherine Ansquer
- Nuclear Medicine Department, CHU-Hôtel Dieu, 1 Place Alexis Ricordeau, 44093, Nantes Cedex1, France
- CIRCINA INSERM, Angers University, 8 quai Moncousu, 44000, Nantes, France
| | - Géraldine Bera
- Sorbonne University, Nuclear Medicine Department, Pitié-Salpêtrière Hospital, 47-83 Bd de l'Hôpital, 75013, Paris, France
- INSERM U1146, Laboratoire d'imagerie Biomedicale (LIB), Sorbonne University, Paris, France
| | - Philippe Chanson
- Assistance Publique-Hôpitaux de Paris, Hôpital de Bicêtre, Service d'Endocrinologie et des Maladies de la Reproduction, Centre de Référence des Maladies Rares de l'Hypophyse, Le Kremlin Bicêtre, F-94275, France
- INSERM UMR S1185, Fac Med Paris Sud, Univ Paris-Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, F-94276, France
| | - Charlotte Lussey-Lepoutre
- Sorbonne University, Nuclear Medicine Department, Pitié-Salpêtrière Hospital, 47-83 Bd de l'Hôpital, 75013, Paris, France.
- INSERM U970, Georges Pompidou European Hospital Cardiovascular Research Center, 56 rue Leblanc, 75015, Paris, France.
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17
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Rayn KN, Elnabawi YA, Sheth N. Clinical implications of PET/CT in prostate cancer management. Transl Androl Urol 2018; 7:844-854. [PMID: 30456187 PMCID: PMC6212623 DOI: 10.21037/tau.2018.08.26] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Several imaging modalities exist for the investigation of prostate cancer (PCa). From ultrasound to computed tomography (CT) and magnetic resonance imaging (MRI), the role of imaging in detecting lesion foci, staging, and localizing disease after biochemical recurrence (BCR) is expanding. However, many of the conventional imaging modalities are suboptimal, particularly in the detection of metastasis. Positron emission tomography (PET) has recently emerged as a promising tool in PCa management. The ability to develop radiolabeled tracers for functional imaging based on characteristics of PCa cells can potentially provide more insight into management by utilizing key features of those cells, such as metabolic activity, increased proliferation, and receptor expression. 18-flurodeoxyglucose (FDG) is one of the earliest tracers used in PET imaging that takes advantage of increased metabolism of glucose. Its role in PCa has been somewhat limited due to poor resolution and confounders including noise resulting from the proximity of the prostate to the bladder. Choline, a precursor molecule for a major component of the cell membrane, phosphatidylcholine, shows increased uptake in cells with rapid proliferation. When compared to metabolic based imaging techniques with FDG, choline PET/CT was superior. Nevertheless, choline PET/CT was not equivocal to MRI in detection of local disease, but was superior to conventional imaging in localizing metastasis and lymph node metastasis (LNM). Fluciclovine is another novel marker that utilizes the increased proliferation seen in tumor cells. Studies have shown it to be superior to choline PET/CT in PCa management, particularly in patients with BCR. As with choline PET/CT, studies that have assessed the impact of fluciclovine on clinical practice have highlighted the impact of these new tracers on clinical decision making. Most recently, the newest molecular probe targeting prostate specific membrane antigen (PSMA) was developed. It offers higher detection rates compared to choline PET/CT and conventional imaging modalities and has shown promise in LNM and BCR. With the wide range of available PET tracers, this review aims to highlight the role of each in lesion foci detection, primary staging, disease recurrence and explore the potential clinical impact.
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Affiliation(s)
- Kareem N Rayn
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Niki Sheth
- Department of Radiation Oncology, SUNY Downstate Medical Center, Brooklyn, NY, USA
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18
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de Almeida Schirmer BG, de Araujo MR, Silveira MB, Pereira JM, Vieira LC, Alves CG, Mbolela WT, Ferreira AV, Silva-Cunha A, Fialho SL, da Silva JB, Malamut C. Comparison of [ 18F]Fluorocholine and [ 18F]Fluordesoxyglucose for assessment of progression, lung metastasis detection and therapy response in murine 4T1 breast tumor model. Appl Radiat Isot 2018; 140:278-288. [PMID: 30081351 DOI: 10.1016/j.apradiso.2018.07.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 05/23/2018] [Accepted: 07/25/2018] [Indexed: 10/28/2022]
Abstract
The [18F]Fluorocholine ([18F]FCH) tracer for PET imaging has been proven to be effective for several malignances. However, there are only a few studies related to its breast tumor applicability and they are still limited. The aim of this study was investigate the efficacy of [18F]FCH/PET compared to [18F]FDG/PET in a murine 4T1 mammary carcinoma model treated and nontreated. [18F]FCH/PET showed its applicability for primary tumor and lung metastasis detection and their use for response monitoring of breast cancer therapeutics at earlier stages.
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Affiliation(s)
| | - Marina Rios de Araujo
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Marina Bicalho Silveira
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Jousie Michel Pereira
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Lorena Carla Vieira
- Faculdade de Farmácia - Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil; Fundação Ezequiel Dias (FUNED), Belo Horizonte, Brazil
| | - Clarice Gregório Alves
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - William Tshisuaka Mbolela
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Andrea Vidal Ferreira
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Armando Silva-Cunha
- Faculdade de Farmácia - Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | | | - Juliana Batista da Silva
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Carlos Malamut
- Unidade de Pesquisa e Produção de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil.
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19
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Schweighofer-Zwink G, Hehenwarter L, Rendl G, Rettenbacher L, Langsteger W, Beheshti M, Pirich C. [Imaging of parathyroid adenomas with F‑18 choline PET-CT]. Wien Med Wochenschr 2018; 169:15-24. [PMID: 30264384 DOI: 10.1007/s10354-018-0660-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 08/27/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Ultrasound and sestamibi scintigraphy are the recommended standard procedures for initial diagnosis in primary hyperparathyroidism (pHPT). Recently, F‑18 choline positron emission tomography computed tomography (choline PET/CT) has been shown promising results for the diagnostic work up of primary hyperparathyroidism (pHPT) suggesting superiority over conventional scintigraphy using Tc99m sestamibi based protocols using planar dual-phase imaging, SPECT or SPECT/CT. METHODS This review presents the results of F‑18 choline PET/CT on the basis of a literature search using the keywords "primary hyperparathyroidism and choline", "primary hyperparathyroidism and PET", "parathyroid adenoma and choline" und "parathyroid adenoma and PET". RESULTS 6 studies were identified dealing with the diagnostic impact of choline PET/CT. The studies included 5 to 151 patients. Localization of single gland adenomas can be achieved with choline PET/CT in 80 up to 96% of cases. A high sensitivity and accuracy of choline PET/CT imaging is documented even in cases of repeated surgery for recurrent pHPT, in coexistant nodular goiter or in the detection of adenoma in atypical localization. CONCLUSIONS Using choline PET/CT parathyroid adenoma and probably parathyroid hyperplasia can be exactly localized in most patients with pHPT. Thus, a minimal-invasive surgical procedure is feasible with decreased risk of complications but high success rate in terms of biochemical cure. The diagnostic accuracy in multiglandular disease remains to be established.
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Affiliation(s)
- Gregor Schweighofer-Zwink
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich.
| | - Lukas Hehenwarter
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - Gundula Rendl
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - Lukas Rettenbacher
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
| | - Werner Langsteger
- Abteilung für Nuklearmedizin und Endokrinologie, Ordensklinikum Linz, Seilerstätte 4, 4010, Linz, Österreich
| | - Mohsen Beheshti
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich.,Abteilung für Nuklearmedizin und Endokrinologie, Ordensklinikum Linz, Seilerstätte 4, 4010, Linz, Österreich
| | - Christian Pirich
- UK für Nuklearmedizin und Endokrinologie, Universitätsklinikum Salzburg der Paracelus Medizinischen Privatuniversität, Müllner Hauptstraße 48, 5020, Salzburg, Österreich
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20
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Cuccurullo V, Di Stasio GD, Evangelista L, Ciarmiello A, Mansi L. Will 68 Ga PSMA-radioligands be the only choice for nuclear medicine in prostate cancer in the near future? A clinical update. Rev Esp Med Nucl Imagen Mol 2018. [DOI: 10.1016/j.remnie.2017.10.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Will 68Ga PSMA-radioligands be the only choice for nuclear medicine in prostate cancer in the near future? A clinical update. Rev Esp Med Nucl Imagen Mol 2018; 37:103-109. [PMID: 29422356 DOI: 10.1016/j.remn.2017.10.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 10/19/2017] [Accepted: 10/20/2017] [Indexed: 01/10/2023]
Abstract
Prostate Cancer (PCa) represents the most common malignant tumor in men but according to the European Association of Urology (EAU) guidelines, a mass screening for PCa diagnosis should not be performed due to over-diagnosis and over-treatment related problems. An early clinical diagnosis is possible, mainly based on digital rectal examination and Prostatic Specific Agent (PSA) testing. However, the only mandatory test to define the presence of PCa is ultrasound guided-biopsy, obtained on multiple samples, which has also a high prognostic value. In this context, diagnostic imaging plays an important role as confirmed by EAU that in a 2016 update of their guidelines on PCa stated the importance of Positron Emission Tomography (PET) with 11C- or 18F-choline combined with computed tomography (CT) to identify local relapse, lymph node involvement and metastatic spread at all stages. Consequently, in 2017, the European Association of Nuclear Medicine (EANM) together with the Society of Nuclear Medicine and Molecular Imaging (SNMMI) published new guidelines for 68Ga-Prostate Specific Membrane Antigen (PSMA) PET/CT to help physicians in the recommendation, execution and interpretation of PET/CT scans in patients with PCa. Thus, the aim of this 'evidence paper' is to define the current diagnostic algorithm in PCa in order to increase the general level of confidence in approaching such a crucial topic.
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22
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Ouattara A, de Oliveira TR, Holz S, Van den Bossche H, Strybol D, Assenmacher C, Everaerts W, De Meerleer G, Joniau S. Incidental Detection of Occult Thyroid Carcinoma with 11C-Choline PET/CT for High Risk Prostate Cancer. Curr Urol 2017; 10:217-220. [PMID: 29234267 DOI: 10.1159/000447184] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 01/24/2017] [Indexed: 12/12/2022] Open
Abstract
We report a case of a 65-year-old male patient with high-risk prostate cancer, re-staged with 11C-choline positron emission tomography/computed tomography (PET/CT) for prostate specific antigen recurrences 3 years after radical prostatectomy and adjuvant radiation therapy. In addition to 2 suspicious presacral lymph nodes which were resected and proven to be metastatic, PET/CT revealed a very high uptake in a calcified thyroid nodule. Evaluation with fine needle aspiration was suspicious for thyroid carcinoma and the patient underwent total thyroidectomy, confirming a non-metastatic encapsulated follicular variant of papillary thyroid carcinoma. To our knowledge, this is the first report of a thyroid cancer diagnosed with 11C-choline PET/CT for prostate cancer staging.
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Affiliation(s)
- Adama Ouattara
- Department of Urology, University Hospitals Leuven, Belgium
| | | | - Serge Holz
- Department of Urology, University Hospitals Leuven, Belgium
| | | | - David Strybol
- Department of Pathology, University Hospitals Leuven, Belgium
| | - Christophe Assenmacher
- Department of Medicine Teaching Programmes, Katholieke Universiteit Leuven, Leuven, Belgium
| | | | - Gert De Meerleer
- Department of Radiation Oncology, University Hospitals Leuven, Belgium
| | - Steven Joniau
- Department of Urology, University Hospitals Leuven, Belgium
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23
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Calabria F, Chiaravalloti A, Cicciò C, Gangemi V, Gullà D, Rocca F, Gallo G, Cascini GL, Schillaci O. PET/CT with 18 F–choline: Physiological whole bio-distribution in male and female subjects and diagnostic pitfalls on 1000 prostate cancer patients. Nucl Med Biol 2017; 51:40-54. [DOI: 10.1016/j.nucmedbio.2017.04.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 03/07/2017] [Accepted: 04/10/2017] [Indexed: 12/24/2022]
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Abstract
As the field of PET has expanded and an ever-increasing number and variety of compounds have been radiolabeled as potential in vivo tracers of biochemistry, transporters have become important primary targets or facilitators of radiotracer uptake and distribution. A transporter can be the primary target through the development of a specific high-affinity radioligand: examples are the multiple high-affinity radioligands for the neuronal membrane neurotransmitter or vesicular transporters, used to image nerve terminals in the brain. The goal of a radiotracer might be to study the function of a transporter through the use of a radiolabeled substrate, such as the application of 3-O-[11C]methyl]glucose to measure rates of glucose transport through the blood-brain barrier. In many cases, transporters are required for radiotracer distributions, but the targeted biochemistries might be unrelated: an example is the use of 2-deoxy-2-[18F]FDG for imaging glucose metabolism, where initial passage of the radiotracer through cell membranes requires the action of specific glucose transporters. Finally, there are transporters such as p-glycoprotein that function to extrude small molecules from tissues, and can effectively work against successful uptake of radiotracers. The diversity of structures and functions of transporters, their importance in human health and disease, and their role in therapeutic drug disposition suggest that in vivo imaging of transporter location and function will continue to be a point of emphasis in PET radiopharmaceutical development. In this review, the variety of transporters and their importance for in vivo PET radiotracer development and application are discussed. Transporters have thus joined the other major protein targets such as G-protein coupled receptors, ligand-gated ion channels, enzymes, and aggregated proteins as of high interest for understanding human health and disease.
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Affiliation(s)
- Michael R Kilbourn
- Department of Radiology, University of Michigan Medical School, Ann Arbor, MI.
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25
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Ramamonjisoa N, Ackerstaff E. Characterization of the Tumor Microenvironment and Tumor-Stroma Interaction by Non-invasive Preclinical Imaging. Front Oncol 2017; 7:3. [PMID: 28197395 PMCID: PMC5281579 DOI: 10.3389/fonc.2017.00003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/05/2017] [Indexed: 12/13/2022] Open
Abstract
Tumors are often characterized by hypoxia, vascular abnormalities, low extracellular pH, increased interstitial fluid pressure, altered choline-phospholipid metabolism, and aerobic glycolysis (Warburg effect). The impact of these tumor characteristics has been investigated extensively in the context of tumor development, progression, and treatment response, resulting in a number of non-invasive imaging biomarkers. More recent evidence suggests that cancer cells undergo metabolic reprograming, beyond aerobic glycolysis, in the course of tumor development and progression. The resulting altered metabolic content in tumors has the ability to affect cell signaling and block cellular differentiation. Additional emerging evidence reveals that the interaction between tumor and stroma cells can alter tumor metabolism (leading to metabolic reprograming) as well as tumor growth and vascular features. This review will summarize previous and current preclinical, non-invasive, multimodal imaging efforts to characterize the tumor microenvironment, including its stromal components and understand tumor-stroma interaction in cancer development, progression, and treatment response.
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Affiliation(s)
- Nirilanto Ramamonjisoa
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ellen Ackerstaff
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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