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Timmers HJLM, Taïeb D, Pacak K, Lenders JWM. Imaging of Pheochromocytomas and Paragangliomas. Endocr Rev 2024; 45:414-434. [PMID: 38206185 PMCID: PMC11074798 DOI: 10.1210/endrev/bnae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 12/11/2023] [Accepted: 01/10/2024] [Indexed: 01/12/2024]
Abstract
Pheochromocytomas/paragangliomas are unique in their highly variable molecular landscape driven by genetic alterations, either germline or somatic. These mutations translate into different clusters with distinct tumor locations, biochemical/metabolomic features, tumor cell characteristics (eg, receptors, transporters), and disease course. Such tumor heterogeneity calls for different imaging strategies in order to provide proper diagnosis and follow-up. This also warrants selection of the most appropriate and locally available imaging modalities tailored to an individual patient based on consideration of many relevant factors including age, (anticipated) tumor location(s), size, and multifocality, underlying genotype, biochemical phenotype, chance of metastases, as well as the patient's personal preference and treatment goals. Anatomical imaging using computed tomography and magnetic resonance imaging and functional imaging using positron emission tomography and single photon emission computed tomography are currently a cornerstone in the evaluation of patients with pheochromocytomas/paragangliomas. In modern nuclear medicine practice, a multitude of radionuclides with relevance to diagnostic work-up and treatment planning (theranostics) is available, including radiolabeled metaiodobenzylguanidine, fluorodeoxyglucose, fluorodihydroxyphenylalanine, and somatostatin analogues. This review amalgamates up-to-date imaging guidelines, expert opinions, and recent discoveries. Based on the rich toolbox for anatomical and functional imaging that is currently available, we aim to define a customized approach in patients with (suspected) pheochromocytomas/paragangliomas from a practical clinical perspective. We provide imaging algorithms for different starting points for initial diagnostic work-up and course of the disease, including adrenal incidentaloma, established biochemical diagnosis, postsurgical follow-up, tumor screening in pathogenic variant carriers, staging and restaging of metastatic disease, theranostics, and response monitoring.
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Affiliation(s)
- Henri J L M Timmers
- Department of Internal Medicine, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
| | - David Taïeb
- Department of Nuclear Medicine, La Timone University Hospital, Aix-Marseille University, Marseille, France and European Center for Research in Medical Imaging, Aix-Marseille University, 13005 Marseille, France
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892-1583, USA
| | - Jacques W M Lenders
- Department of Internal Medicine, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
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Md Nor MN, Healy K, Feeney J, Garrahy A. Brown Adipose Tissue Activation on 18-F-FDG-PET/CT Manifesting as Cachexia in a Patient With Pheochromocytoma. JCEM CASE REPORTS 2024; 2:luae082. [PMID: 38746052 PMCID: PMC11091736 DOI: 10.1210/jcemcr/luae082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Indexed: 05/16/2024]
Affiliation(s)
- Muhammad Najmi Md Nor
- Robert Graves Institute of Endocrinology, Tallaght University Hospital, D24 NR0A Dublin, Ireland
| | - Kate Healy
- Department of Radiology, Tallaght University Hospital, D24 NR0A Dublin, Ireland
| | - John Feeney
- Department of Radiology, Tallaght University Hospital, D24 NR0A Dublin, Ireland
| | - Aoife Garrahy
- Robert Graves Institute of Endocrinology, Tallaght University Hospital, D24 NR0A Dublin, Ireland
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3
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Yang Y, Zhou T, Zhao X, Cai Y, Xu Y, Gang X, Wang G. Main mechanisms and clinical implications of alterations in energy expenditure state among patients with pheochromocytoma and paraganglioma: A review. Medicine (Baltimore) 2024; 103:e37916. [PMID: 38669419 PMCID: PMC11049756 DOI: 10.1097/md.0000000000037916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
Pheochromocytoma and paraganglioma (PPGL) are rare neuroendocrine tumors with diverse clinical presentations. Alterations in energy expenditure state are commonly observed in patients with PPGL. However, the reported prevalence of hypermetabolism varies significantly and the underlying mechanisms and implications of this presentation have not been well elucidated. This review discusses and analyzes the factors that contribute to energy consumption. Elevated catecholamine levels in patients can significantly affect substance and energy metabolism. Additionally, changes in the activation of brown adipose tissue (BAT), inflammation, and the inherent energy demands of the tumor can contribute to increased resting energy expenditure (REE) and other energy metabolism indicators. The PPGL biomarker, chromogranin A (CgA), and its fragments also influence energy metabolism. Chronic hypermetabolic states may be detrimental to these patients, with surgical tumor removal remaining the primary therapeutic intervention. The high energy expenditure of PPGL has not received the attention it deserves, and an accurate assessment of energy metabolism is the cornerstone for an adequate understanding and treatment of the disease.
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Affiliation(s)
- Yuqi Yang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Tong Zhou
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Xue Zhao
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Yunjia Cai
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Yao Xu
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Xiaokun Gang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Guixia Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
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Moustaki M, Paschou SA, Vakali E, Xekouki P, Ntali G, Kassi E, Peppa M, Psaltopoulou T, Tzanela M, Vryonidou A. Secondary diabetes mellitus in pheochromocytomas and paragangliomas. Endocrine 2023; 82:467-479. [PMID: 37731140 PMCID: PMC10618385 DOI: 10.1007/s12020-023-03492-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/10/2023] [Indexed: 09/22/2023]
Abstract
Secondary diabetes mellitus (DM) in secretory pheochromocytomas and paragangliomas (PPGLs) is encountered in up to 50% of cases, with its presentation ranging from mild, insulin resistant forms to profound insulin deficiency states, such as diabetic ketoacidosis and hyperglycemic hyperosmolar state. PPGLs represent hypermetabolic states, in which adrenaline and noradrenaline induce insulin resistance in target tissues characterized by aerobic glycolysis, excessive lipolysis, altered adipokine expression, subclinical inflammation, as well as enhanced gluconeogenesis and glucogenolysis. These effects are mediated both directly, upon adrenergic receptor stimulation, and indirectly, via increased glucagon secretion. Impaired insulin secretion is the principal pathogenetic mechanism of secondary DM in this setting; yet, this is relevant for tumors with adrenergic phenotype, arising from direct inhibitory actions in beta pancreatic cells and incretin effect impairment. In contrast, insulin secretion might be enhanced in tumors with noradrenergic phenotype. This dimorphic effect might correspond to two distinct glycemic phenotypes, with predominant insulin resistance and insulin deficiency respectively. Secondary DM improves substantially post-surgery, with up to 80% remission rate. The fact that surgical treatment of PPGLs restores insulin sensitivity and secretion at greater extent compared to alpha and beta blockade, implies the existence of further, non-adrenergic mechanisms, possibly involving other hormonal co-secretion by these tumors. DM management in PPGLs is scarcely studied. The efficacy and safety of newer anti-diabetic medications, such as glucagon-like peptide 1 receptor agonists and sodium glucose cotransporter 2 inhibitors (SGLT2is), as well as potential disease-modifying roles of metformin and SGLT2is warrant further investigation in future studies.
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Affiliation(s)
- Melpomeni Moustaki
- Department of Endocrinology and Diabetes Center, Hellenic Red Cross Hospital, Athens, Greece
| | - Stavroula A Paschou
- Endocrine Unit and Diabetes Center, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
| | - Elena Vakali
- Department of Endocrinology and Diabetes Center, Hellenic Red Cross Hospital, Athens, Greece
| | - Paraskevi Xekouki
- Department of Endocrinology and Diabetes, University General Hospital of Heraklion, School of Medicine, University of Crete, Heraklion, Greece
| | - Georgia Ntali
- Department of Endocrinology and Diabetes Center, Endo ERN Center, Evaggelismos Hospital, Athens, Greece
| | - Evanthia Kassi
- Endocrine Unit, First Department of Propaedeutic and Internal Medicine, Laiko Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Melpomeni Peppa
- Endocrine Unit and Diabetes Center, Second Department of Internal Medicine, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Theodora Psaltopoulou
- Endocrine Unit and Diabetes Center, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Marinella Tzanela
- Department of Endocrinology and Diabetes Center, Endo ERN Center, Evaggelismos Hospital, Athens, Greece
| | - Andromachi Vryonidou
- Department of Endocrinology and Diabetes Center, Hellenic Red Cross Hospital, Athens, Greece
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Carvalho JG, Gho JMIH, Budde RPJ, Hofland J, Hirsch A. Multimodality Imaging of Cardiac Paragangliomas. Radiol Cardiothorac Imaging 2023; 5:e230049. [PMID: 37693206 PMCID: PMC10483254 DOI: 10.1148/ryct.230049] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 07/01/2023] [Accepted: 07/07/2023] [Indexed: 09/12/2023]
Abstract
Paragangliomas are rare neuroendocrine tumors of extra-adrenal autonomic paraganglia origin. Paragangliomas rarely involve the heart, and they account for less than 1% of primary cardiac tumors. Most cardiac paragangliomas are incidentally detected at echocardiography or CT or during the workup of symptomatic patients with high catecholamine levels. Paragangliomas are typically located around the great vessels, coronary arteries (atrioventricular groove), or the atria, which can be explained by the tumor origin from the paraganglia and the distribution of the cardiac plexus. At MRI, cardiac paragangliomas typically have low to intermediate signal on T1-weighted images and high signal on T2-weighted images. The tumors are strongly vascularized, with high uptake on first-pass perfusion images and a heterogeneous pattern on late gadolinium enhancement images. Functional imaging is indicated for diagnostic confirmation and to screen for additional tumor locations or metastatic disease. Surgical excision is the only curative treatment. Cardiac CT angiography or invasive angiography should be performed preoperatively to precisely delineate tumor vascularization. In particular, its relation with the coronary arteries should be determined, as paragangliomas can be perfused by the coronary arteries, posing additional surgical challenges and the need for coronary revascularization. This imaging essay reviews the characteristics of paragangliomas and the use of multimodality imaging for diagnosis and treatment. Keywords: CT Angiography, Molecular Imaging, MR Imaging, PET/CT, Cardiac, Heart, Neoplasms-Primary © RSNA, 2023.
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Affiliation(s)
| | - Johannes M. I. H. Gho
- From the Department of Radiology and Nuclear Medicine (J.G.C.,
J.M.I.H.G., R.P.J.B., A.H.) and Department of Cardiology (J.M.I.H.G., R.P.J.B.,
A.H.), Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40,
3015 GD Rotterdam, the Netherlands; and Department of Internal Medicine, Sector
Endocrinology, Erasmus MC Cancer Institute, University Medical Center Rotterdam,
Rotterdam, the Netherlands (J.H.)
| | - Ricardo P. J. Budde
- From the Department of Radiology and Nuclear Medicine (J.G.C.,
J.M.I.H.G., R.P.J.B., A.H.) and Department of Cardiology (J.M.I.H.G., R.P.J.B.,
A.H.), Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40,
3015 GD Rotterdam, the Netherlands; and Department of Internal Medicine, Sector
Endocrinology, Erasmus MC Cancer Institute, University Medical Center Rotterdam,
Rotterdam, the Netherlands (J.H.)
| | - Johannes Hofland
- From the Department of Radiology and Nuclear Medicine (J.G.C.,
J.M.I.H.G., R.P.J.B., A.H.) and Department of Cardiology (J.M.I.H.G., R.P.J.B.,
A.H.), Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40,
3015 GD Rotterdam, the Netherlands; and Department of Internal Medicine, Sector
Endocrinology, Erasmus MC Cancer Institute, University Medical Center Rotterdam,
Rotterdam, the Netherlands (J.H.)
| | - Alexander Hirsch
- From the Department of Radiology and Nuclear Medicine (J.G.C.,
J.M.I.H.G., R.P.J.B., A.H.) and Department of Cardiology (J.M.I.H.G., R.P.J.B.,
A.H.), Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40,
3015 GD Rotterdam, the Netherlands; and Department of Internal Medicine, Sector
Endocrinology, Erasmus MC Cancer Institute, University Medical Center Rotterdam,
Rotterdam, the Netherlands (J.H.)
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Ricci M, De Feo MS, Granese GM, Frantellizzi V, Carabellese B, Lubrano E, Cimini A. 18F-FDG PET/CT technology for the assessment of brown adipose tissue: an updated review. Expert Rev Med Devices 2023; 20:1143-1156. [PMID: 37965719 DOI: 10.1080/17434440.2023.2283618] [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: 05/30/2023] [Accepted: 11/10/2023] [Indexed: 11/16/2023]
Abstract
INTRODUCTION This review provides an update of 18 F-fluorodeoxyglucose ([18F] FDG) for Brown adipose tissue (BAT) activity quantification, whose role is not completely understood. AREAS COVERED We conducted an unstructured search of the literature for any studies employing the [18F] FDG PET in BAT assessment. We explored BAT quantification both in healthy individuals and in different pathologies, after cold exposure and as a metabolic biomarker. The assessment of possible BAT modulators by using [18F] FDG PET is shown. Further PET tracers and novel developments for BAT assessments are also described. EXPERT OPINION Further PET tracers and imaging modalities are under investigation, but the [18F] FDG PET is currently the method of choice for the evaluation of BAT and further multicentric trials are needed for a better understanding of the BAT physiopathology, also after cold stimuli. The modulation of BAT activity, assessed by [18F] FDG PET imaging, seems a promising tool for the management of conditions such as obesity and type 2 diabetes. Moreover, an interesting possible correlation of BAT activation with prognostic [18F] FDG PET indices in cancer patients should be assessed with further multicentric trials.
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Affiliation(s)
- Maria Ricci
- Nuclear Medicine Unit, Cardarelli Hospital, Campobasso, Italy
| | - Maria Silvia De Feo
- Department of Radiological Sciences Oncology and Anatomo-Pathology, Sapienza University of Rome, Rome, Italy
| | - Giorgia Maria Granese
- Department of Radiological Sciences Oncology and Anatomo-Pathology, Sapienza University of Rome, Rome, Italy
| | - Viviana Frantellizzi
- Department of Radiological Sciences Oncology and Anatomo-Pathology, Sapienza University of Rome, Rome, Italy
| | | | - Ennio Lubrano
- Dipartimento di Medicina e Scienze della Salute, Università degli Studi del Molise, Italy
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | - Andrea Cimini
- Nuclear Medicine Unit, St. Salvatore Hospital, L'Aquila, Italy
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Marcus C, Subramaniam RM. Paragangliomas and Pheochromocytomas: Positron Emission Tomography/Computed Tomography Diagnosis and Therapy. PET Clin 2023; 18:233-242. [PMID: 36585340 DOI: 10.1016/j.cpet.2022.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Molecular imaging evaluation of pheochromocytomas and paragangliomas depends on multiple factors, such as localized versus metastatic disease, the genetic, and biochemical profile of tumors. Positron emission tomography/computed tomography (PET/CT) imaging of these tumors outperforms Meta-Iodo-Benzyl-Guanidine (MIBG) scintigraphy in most cases. A few PET radiotracers have been studied in evaluating these patients with somatostatin receptor PET imaging and have shown superior performance compared with other agents in most of these patients. 18F-fluorodeoxyglucose PET/CT imaging is useful in select patients, such as those with succinate dehydrogenase complex subunit B-associated disease. Treatment strategy depends on multiple factors and necessitates a multidisciplinary approach.
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Affiliation(s)
- Charles Marcus
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology and Radiological Sciences, Emory University School of Medicine, 1364 Clifton Road Northeast, 1st Floor #E163, Atlanta, GA 30322, USA.
| | - Rathan M Subramaniam
- Department of Medicine, Otago Medical School, University of Otago, 1st Floor, Dunedin Hospital, 201 Great King Street, Dunedin 9016, New Zealand; Duke University Medical Center, Department of Radiology, 2301 Erwin Road, Box 3808, Durham, NC 27710, USA
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Nkodo A, Wu I, Hobgood S, Celi FS. Unexplained Cachexia as a Presenting Symptom of Pheochromocytoma in a Geriatric Patient. JCEM CASE REPORTS 2023; 1:luad037. [PMID: 37908484 PMCID: PMC10580407 DOI: 10.1210/jcemcr/luad037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Indexed: 11/02/2023]
Abstract
Pheochromocytomas are rare neuroendocrine tumors that may secrete catecholamines, resulting in a wide array of clinical symptoms. While patients classically present with hypertension, headache, diaphoresis, and flushing, these symptoms are present in only 40% of cases. Here, we describe a 70-year-old woman whose predominant symptom was unexplained severe weight loss over a 12-month period associated with fatigue, anxiety, and palpitations at her endocrinologist and geriatrician visits. Diagnostic imaging was performed to assess for malignancy and demonstrated a 2.0 cm × 2.0 cm left adrenal mass. The diagnosis of pheochromocytoma was confirmed by elevated plasma normetanephrine levels. After a 2-week alpha blockade with doxazosin, the patient underwent robotic left adrenalectomy. Following surgery, the patient regained weight, and her hypertension also improved significantly. We hope this uncommon clinical presentation in an older adult characterized by weight loss and frailty will increase the awareness of atypical pheochromocytoma symptomatology, particularly in older individuals.
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Affiliation(s)
- Amélie Nkodo
- Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Iris Wu
- Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Sarah Hobgood
- Department of Internal Medicine, Division of Geriatrics, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA
| | - Francesco S Celi
- Department of Medicine, Division of Endocrinology and Metabolism, UConn Health, Farmington, CT 06030, USA
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Pacak K. New Biology of Pheochromocytoma and Paraganglioma. Endocr Pract 2022; 28:1253-1269. [PMID: 36150627 PMCID: PMC9982632 DOI: 10.1016/j.eprac.2022.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 12/13/2022]
Abstract
Pheochromocytomas and paragangliomas continue to be defined by significant morbidity and mortality despite their several recent advances in diagnosis, localization, and management. These adverse outcomes are largely related to mass effect as well as catecholamine-induced hypertension, tachyarrhythmias and consequent target organ damage, acute coronary syndromes, and strokes (ischemic and hemorrhagic stroke). Thus, a proper understanding of the physiology and pathophysiology of these tumors and recent advances are essential to affording optimal care. These major developments largely include a redefinition of metastatic behavior, a novel clinical categorization of these tumors into 3 genetic clusters, and an enhanced understanding of catecholamine metabolism and consequent specific biochemical phenotypes. Current advances in imaging of these tumors are shifting the paradigm from poorly specific anatomical modalities to more precise characterization of these tumors using the advent and development of functional imaging modalities. Furthermore, recent advances have revealed new molecular events in these tumors that are linked to their genetic landscape and, therefore, provide new therapeutic platforms. A few of these prospective therapies translated into new clinical trials, especially for patients with metastatic or inoperable tumors. Finally, outcomes are ever-improving as patients are cared for at centers with cumulative experience and well-established multidisciplinary tumor boards. In parallel, these centers have supported national and international collaborative efforts and worldwide clinical trials. These concerted efforts have led to improved guidelines collaboratively developed by healthcare professionals with a growing expertise in these tumors and consequently improving detection, prevention, and identification of genetic susceptibility genes in these patients.
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Affiliation(s)
- Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland.
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Gomes de Farias LDP, Teles GBDS, Baptista LDPS, de Albuquerque AS. Intrapericardial Paraganglioma. Radiol Cardiothorac Imaging 2022; 4:e220100. [PMID: 36059382 PMCID: PMC9434980 DOI: 10.1148/ryct.220100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/13/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
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Pinto YO, Festuccia WTL, Magdalon J. The involvement of the adrenergic nervous system in activating human brown adipose tissue and browning. Hormones (Athens) 2022; 21:195-208. [PMID: 35247188 DOI: 10.1007/s42000-022-00361-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/24/2022] [Indexed: 11/04/2022]
Abstract
Obesity is a chronic condition of multifactorial etiology characterized by excessive body fat due to a calorie intake higher than energy expenditure. Given the intrinsic limitations of surgical interventions and the difficulties associated with lifestyle changes, pharmacological manipulation is currently one of the main therapies for metabolic diseases. Approaches aiming to promote energy expenditure through induction of thermogenesis have been explored and, in this context, brown adipose tissue (BAT) activation and browning have been shown to be promising strategies. Although such processes are physiologically stimulated by the sympathetic nervous system, not all situations that are known to increase adrenergic signaling promote a concomitant increase in BAT activation or browning in humans. Thus, a better understanding of factors involved in the thermogenesis attributed to these tissues is needed to enable the development of future therapies against obesity. Herein we carry out a critical review of original articles in humans under conditions previously known to trigger adrenergic responses-namely, cold, catecholamine-secreting tumor (pheochromocytoma and paraganglioma), burn injury, and adrenergic agonists-and discuss which of them are associated with increased BAT activation and browning. BAT is clearly stimulated in individuals exposed to cold or treated with high doses of the β3-adrenergic agonist mirabegron, whereas browning is certainly induced in patients after burn injury or with pheochromocytoma, as well as in individuals treated with β3-adrenergic agonist mirabegron for at least 10 weeks. Given the potential effect of increasing energy expenditure, adrenergic stimuli are promising strategies in the treatment of metabolic diseases.
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Affiliation(s)
- Yolanda Oliveira Pinto
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, Sao Paulo, SP, Brazil
| | | | - Juliana Magdalon
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, Sao Paulo, SP, Brazil.
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Klímová J, Mráz M, Kratochvílová H, Lacinová Z, Novák K, Michalský D, Kvasnička J, Holaj R, Haluzíková D, Doležalová RP, Zítek M, Krátká Z, Todorovová V, Widimský J, Haluzík M, Zelinka T, Petrák O. Gene Profile of Adipose Tissue of Patients with Pheochromocytoma/Paraganglioma. Biomedicines 2022; 10:biomedicines10030586. [PMID: 35327387 PMCID: PMC8945850 DOI: 10.3390/biomedicines10030586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/23/2022] [Accepted: 02/27/2022] [Indexed: 02/07/2023] Open
Abstract
Background: Brown adipose tissue (BAT) is a therapeutic target to combat obesity and related disorders. Pheochromocytoma and functional paraganglioma (PPGL) are associated with activated BAT due to catecholamine excess. Our aim was to evaluate BAT activity by gene profile and assess its relation to clinical characteristics and overproduced catecholamine. Methods: mRNA expression of 15 genes in subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) was measured via RT-PCR in 25 patients with PPGL and 14 controls undergoing cholecystectomy. Results: We found in VAT of PPGL higher expression of UCP1 (p < 0.001), CEBPB, PPARGC1A (both p < 0.001), PRDM16 (p = 0.069) and DIO2 (p = 0.005). UCP1 expression correlated only with norepinephrine levels and its metabolite. UCP1 expression, among others, correlated negatively with BMI, age and positively with HDLc levels. Dominance of BAT or BeAT markers was not assessed in PPGL. In SAT of PPGL, we found higher expression of ADRB3, CIDEA (both p < 0.05), and PPARGC1A (p = 0.001), but not UCP1. Conclusion: We demonstrate signs of UCP1-dependent norepinephrine-induced thermogenesis connected with higher expression of DIO2, PPARGC1A, CEBPB and PRDM16 in retroperitoneal VAT of PPGL and its relations to circulating HDLc and triglycerides levels. However, no direct relationship with increased basal energy metabolism measured by calorimetry was found.
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Affiliation(s)
- Judita Klímová
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Miloš Mráz
- Center for Experimental Medicine and Diabetes Center, Institute for Clinical and Experimental Medicine, 140 00 Prague, Czech Republic; (M.M.); (Z.L.); (M.H.)
| | - Helena Kratochvílová
- Institute for Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic;
| | - Zdeňka Lacinová
- Center for Experimental Medicine and Diabetes Center, Institute for Clinical and Experimental Medicine, 140 00 Prague, Czech Republic; (M.M.); (Z.L.); (M.H.)
| | - Květoslav Novák
- Department of Urology, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic;
| | - David Michalský
- First Department of Surgery, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic;
| | - Jan Kvasnička
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Robert Holaj
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Denisa Haluzíková
- Institute of Sport Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (D.H.); (R.P.D.)
| | - Radka Petráková Doležalová
- Institute of Sport Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (D.H.); (R.P.D.)
| | - Matěj Zítek
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Zuzana Krátká
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Veronika Todorovová
- Laboratory of Endocrinology and Metabolism, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic;
| | - Jiří Widimský
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Martin Haluzík
- Center for Experimental Medicine and Diabetes Center, Institute for Clinical and Experimental Medicine, 140 00 Prague, Czech Republic; (M.M.); (Z.L.); (M.H.)
| | - Tomáš Zelinka
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
| | - Ondřej Petrák
- Center of Hypertension, 3rd Department of Medicine, First Faculty of Medicine and General Faculty Hospital, Charles University, 128 00 Prague, Czech Republic; (J.K.); (J.K.); (R.H.); (M.Z.); (Z.K.); (J.W.J.); (T.Z.)
- Correspondence: ; Tel.: +420-224-963073
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13
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Laks S, van Leeuwaarde R, Patel D, Keutgen XM, Hammel P, Nilubol N, Links TP, Halfdanarson TR, Daniels AB, Tirosh A. Management recommendations for pancreatic manifestations of von Hippel-Lindau disease. Cancer 2021; 128:435-446. [PMID: 34735022 DOI: 10.1002/cncr.33978] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/26/2022]
Abstract
Von Hippel-Lindau disease (VHL) is a multineoplasm inherited disease manifesting with hemangioblastoma of the central nervous system and retina, adrenal pheochromocytoma, renal cell carcinoma, pancreatic neuroendocrine tumors and cysts, and neoplasms/cysts of the ear, broad ligament, and testicles. During 2018-2020, the VHL Alliance gathered several committees of experts in the various clinical manifestations of VHL to review the literature, gather the available evidence on VHL, and develop recommendations for patient management. The current report details the results of the discussion of a group of experts in the pancreatic manifestations of VHL along with their proposed recommendations for the clinical surveillance and management of patients with VHL. The recommendations subcommittee performed a comprehensive systematic review of the literature and conducted panel discussions to reach the current recommendations. The level of evidence was defined according to the Shekelle variation of the Grading of Recommendations, Assessment, Development, and Evaluation grading system. The National Comprehensive Cancer Network Categories of Evidence and Consensus defined the committee members' interpretation of the evidence and degree of consensus. The recommendations encompass the main aspects of VHL-related pancreatic manifestations and their clinical management. They are presented in a clinical orientation, including general planning of screening and surveillance for pancreatic neuroendocrine tumors, utility of biochemical biomarkers, the optimal choice for imaging modality, indirect risk stratification, indications for tissue sampling of VHL-related pancreatic neuroendocrine tumors, and interventions. These recommendations are designed to serve as the reference for all aspects of the screening, surveillance, and management of VHL-related pancreatic manifestations.
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Affiliation(s)
- Shachar Laks
- Surgery C, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Rachel van Leeuwaarde
- Department of Endocrine Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Dhaval Patel
- National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Xavier M Keutgen
- Division of Endocrine Surgery, Department of Surgery, University of Chicago Medical Center, Chicago, Illinois
| | - Pascal Hammel
- Department of Digestive and Medical Oncology, Paul Brousse Hospital, Villejuif, France
| | - Naris Nilubol
- National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Thera P Links
- Division of Endocrinology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Anthony B Daniels
- Division of Ocular Oncology and Pathology, Department of Ophthalmology and Visual Sciences, Vanderbilt Eye Institute and Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Amit Tirosh
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Neuroendocrine Tumors Service, VHL Clinical Care Center, Endocrine Oncology Genomics Laboratory, Chaim Sheba Medical Center, Tel Hashomer, Israel
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14
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Severi S, Bongiovanni A, Ferrara M, Nicolini S, Di Mauro F, Sansovini M, Lolli I, Tardelli E, Cittanti C, Di Iorio V, Mezzenga E, Scarpi E, Ibrahim T, Paganelli G, Zovato S. Peptide receptor radionuclide therapy in patients with metastatic progressive pheochromocytoma and paraganglioma: long-term toxicity, efficacy and prognostic biomarker data of phase II clinical trials. ESMO Open 2021; 6:100171. [PMID: 34139487 PMCID: PMC8219772 DOI: 10.1016/j.esmoop.2021.100171] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/22/2021] [Accepted: 05/08/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Pheochromocytoma and paraganglioma (PPGL) have currently only limited treatment options available for patients in the metastatic phase (mPPGL) in either post-surgery or inoperable settings. However, these rare tumors overexpress somatostatin receptors and can thus be treated with peptide receptor radionuclide therapy (PRRT). We present data about our 10-year experience treating 46 consecutive mPPGL patients with 90Y-DOTATOC or 177Lu-DOTATATE. PATIENTS AND METHODS All patients (20 men and 26 women, median age 52 years) showed positive scintigraphic imaging at 111In-octreotide or 68Ga-DOTATOC positron emission tomography/computed tomography (PET/CT). 90Y-DOTATOC was administered in 12 patients, with cumulative dosages ranging from 7.4 to 11 GBq, while 34 patients received 18.5 or 27.5GBq of 177Lu-DOTATATE. We used Southwest Oncology Group Response Evaluation Criteria in Solid Tumors criteria to evaluate treatment efficacy and Common Terminology Criteria for Adverse Events criteria to assess toxicity. The prognostic role of primary tumor site, hormone secretion, succinate dehydrogenase (SDHx) mutation, and metastatic involvement was also evaluated. RESULTS Both 90Y-DOTATOC and 177Lu-DOTATATE PRRT were well tolerated by patients without significant renal or bone marrow toxicity. The median follow-up was 73 months (range 5-146 months). The overall disease control rate (DCR) was 80% [95% confidence interval (CI) 68.9% to 91.9%] with a mean five cycles of therapy. However, 177Lu-DOTATATE patients showed a longer median overall survival (mOS) than those receiving 90Y-Dotatoc and a better DCR when higher dosages were administered, even if a direct comparison was not carried out. Syndromic patients had a poorer mOS. SDHx mutations did not interfere with treatment efficacy. CONCLUSIONS PRRT is safe and effective for the treatment of patients with progressive mPPGL, especially at higher dosages. The longer mOS of 177Lu-DOTATATE-treated patients in our protocols indicates the former radiopharmaceutical as the better candidate for further clinical application.
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Affiliation(s)
- S Severi
- Nuclear Medicine Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) 'Dino Amadori', Meldola, Italy
| | - A Bongiovanni
- Osteoncology and Rare Tumors Center (CDO-TR), IRCCS IRST 'Dino Amadori', Meldola, Italy
| | - M Ferrara
- Familial Cancer Clinic, Istituto Oncologico Veneto (IOV) IRCCS, Padua, Italy
| | - S Nicolini
- Nuclear Medicine Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) 'Dino Amadori', Meldola, Italy
| | - F Di Mauro
- Nuclear Medicine, Ospedale 'M. Bufalini', Cesena, Italy
| | - M Sansovini
- Nuclear Medicine Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) 'Dino Amadori', Meldola, Italy
| | - I Lolli
- Medical Oncology, Ospedale IRCCS 'S. De Bellis', Castellana Grotte, Italy
| | - E Tardelli
- Nuclear Medicine Unit, Department of Diagnostic Imaging, Ospedale 'San Luca', Lucca, Italy
| | - C Cittanti
- Nuclear Medicine Unit, University of Ferrara, Ferrara, Italy
| | - V Di Iorio
- Oncology Pharmacy, IRCCS IRST 'Dino Amadori', Meldola, Italy
| | - E Mezzenga
- Medical Physics Unit, IRCCS IRST 'Dino Amadori', Meldola, Italy
| | - E Scarpi
- Unit of Biostatistics and Clinical Trials, IRCCS IRST 'Dino Amadori', Meldola, Italy
| | - T Ibrahim
- Familial Cancer Clinic, Istituto Oncologico Veneto (IOV) IRCCS, Padua, Italy
| | - G Paganelli
- Nuclear Medicine Unit, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) 'Dino Amadori', Meldola, Italy.
| | - S Zovato
- Familial Cancer Clinic, Istituto Oncologico Veneto (IOV) IRCCS, Padua, Italy
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15
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Sundin A, Hindié E, Avram AM, Tabarin A, Pacak K, Taïeb D. A Clinical Challenge: Endocrine and Imaging Investigations of Adrenal Masses. J Nucl Med 2021; 62:26S-33S. [PMID: 34230070 DOI: 10.2967/jnumed.120.246066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 10/26/2020] [Indexed: 11/16/2022] Open
Abstract
Incidentalomas are reported in 3%-4% of patients who undergo abdominal anatomic imaging, making adrenal mass evaluation a common occurrence. An adrenal mass can be caused by a variety of pathologies, such as benign cortical and medullary tumors, malignant tumors (primary or secondary), cysts, hyperplasia, hemorrhage, or more rarely infection/inflammation processes. Functioning tumors usually have increased hormonal production but they are less common. Regardless of their functional status, some tumors have the potential to behave aggressively. Anatomic and functional imaging together with biologic evaluation play a vital role in adrenal pathology subtyping. Most patients are initially evaluated by CT or MRI, which allows for tumor characterization (to a certain extent) and can rule out malignant behavior based on the absence of tumor growth during longitudinal follow-up. In the remaining patients for whom CT or MRI fail to characterize the pathogenesis of adrenal tumors, the use of specialized molecular imaging techniques should be performed after hormonal screening. This review emphasizes well-established and emerging nuclear medicine imaging modalities and describes their use across various clinical scenarios.
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Affiliation(s)
- Anders Sundin
- Section of Radiology & Molecular Imaging, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Elif Hindié
- Department of Nuclear Medicine, University Hospital of Bordeaux, Bordeaux, France
| | - Anca M Avram
- Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Antoine Tabarin
- Department of Endocrinology, University Hospital of Bordeaux, Bordeaux, France
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD), National Institutes of Health, Bethesda, Maryland; and
| | - David Taïeb
- Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, France
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16
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Imperiale A, Meuter L, Pacak K, Taïeb D. Variants and Pitfalls of PET/CT in Neuroendocrine Tumors. Semin Nucl Med 2021; 51:519-528. [PMID: 33838874 DOI: 10.1053/j.semnuclmed.2021.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Management of patients with neuroendocrine neoplasms (NEN) is complex and warrants referral of these patients to high volume centers with appropriate expertise to ensure favorable outcomes. PET/CT becomes increasingly important in every step of their management and outcome. The choice of radiopharmaceutical heavily depends on tumor origin, which is intimately interconnected to embryology, grade and clinical presentation (eg, diagnostic vs theranostic settings). The aim of this review is to describe the role of SSTR, 18F-FDOPA, and 18F-FDG-PET imaging in the evaluation of NEN patients. There is emphasis on the main variants, caveats, and pitfalls that can be observed within these modalities. Nuclear physicians must be equipped with the skills to handle potential variants, caveats, and pitfalls that are commonly encountered in NEN imaging, and they should understand the expected imaging features that are encountered across various types of NENs.
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Affiliation(s)
- Alessio Imperiale
- Department of Nuclear Medicine and Molecular Imaging - Institut de Cancérologie de Strasbourg Europe (ICANS), IPHC, UMR 7178, CNRS/University of Strasbourg, Strasbourg, France.
| | - Leah Meuter
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - David Taïeb
- Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, France.
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17
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Kim J, Kim SH, Kang H, Lee S, Park SY, Cho Y, Lim YM, Ahn JW, Kim YH, Chung S, Choi CS, Jang YJ, Park HS, Heo Y, Kim KH, Lee MS. TFEB-GDF15 axis protects against obesity and insulin resistance as a lysosomal stress response. Nat Metab 2021; 3:410-427. [PMID: 33758420 DOI: 10.1038/s42255-021-00368-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/18/2021] [Indexed: 01/01/2023]
Abstract
TFEB, a key regulator of lysosomal biogenesis and autophagy, is induced not only by nutritional deficiency but also by organelle stress. Here, we find that Tfeb and its downstream genes are upregulated together with lipofuscin accumulation in adipose tissue macrophages (ATMs) of obese mice or humans, suggestive of obesity-associated lysosomal dysfunction/stress in ATMs. Macrophage-specific TFEB-overexpressing mice display complete abrogation of diet-induced obesity, adipose tissue inflammation and insulin resistance, which is independent of autophagy, but dependent on TFEB-induced GDF15 expression. Palmitic acid induces Gdf15 expression through lysosomal Ca2+-mediated TFEB nuclear translocation in response to lysosomal stress. In contrast, mice fed a high-fat diet with macrophage-specific Tfeb deletion show aggravated adipose tissue inflammation and insulin resistance, accompanied by reduced GDF15 level. Finally, we observe activation of TFEB-GDF15 in ATMs of obese humans as a consequence of lysosomal stress. These findings highlight the importance of the TFEB-GDF15 axis as a lysosomal stress response in obesity or metabolic syndrome and as a promising therapeutic target for treatment of these conditions.
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Affiliation(s)
- Jinyoung Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seong Hun Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
- Discovery 1 team, GI Innovation, Seoul, Korea
| | - Hyereen Kang
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Soyeon Lee
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Shi-Young Park
- Korea Mouse Metabolic Phenotyping Center, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Korea
| | - Yoonil Cho
- Korea Mouse Metabolic Phenotyping Center, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Korea
| | - Yu-Mi Lim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Ji Woong Ahn
- Brain Korea 21 Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - Young-Hwan Kim
- Brain Korea 21 Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - Seungsoo Chung
- Brain Korea 21 Project for Medical Science, Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - Cheol Soo Choi
- Korea Mouse Metabolic Phenotyping Center, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Korea
- Endocrinology, Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Yeon Jin Jang
- Department of Physiology, University of Ulsan College of Medicine, Seoul, Korea
| | - Hye Soon Park
- Department of Family Medicine, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoonseok Heo
- Department of General Surgery, Inha University, College of Medicine, Incheon, Korea
| | - Kook Hwan Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.
- Discovery 1 team, GI Innovation, Seoul, Korea.
| | - Myung-Shik Lee
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea.
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
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