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Su R, Wu Y, Huang Q, Huang S, Li Y, Chen C, Xie W, Li Y. Effects of Blood Collection Tubes on the Quantification of Catecholamines and Their O-Methylated Metabolites by Liquid Chromatography Coupled With Tandem Mass Spectrometry. J Clin Lab Anal 2024:e25107. [PMID: 39345045 DOI: 10.1002/jcla.25107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 06/28/2024] [Accepted: 09/15/2024] [Indexed: 10/01/2024] Open
Abstract
BACKGROUND Catecholamines (epinephrine; norepinephrine; and dopamine) and their O-methylated metabolites (metanephrine; normetanephrine; and 3-methoxytyramine) are biomarkers for pheochromocytoma and paraganglioma. Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) was recommended by Endocrine Society for detecting these compounds. The influence of blood collection tubes on the analysis of the six analytes by LC-MS/MS was not thoroughly investigated, which we want to clarify in our study. METHODS Blood samples of healthy individuals were collected into serum, lithium heparin, and K2EDTA plasma tubes separately. Samples were subjected to solid phase extraction and then analyzed by LC-MS/MS. The retention behavior and assay performance of the six analytes were assessed for samples from different collection containers. The impacts of potassium and sodium as the counter ions of EDTA on the retention time and matrix effect were also studied. RESULTS Compared with O-methylated metabolites, the results for catecholamines were more affected by the collection tubes, especially for norepinephrine, which displayed severely suppressed signal and very low extraction efficiency in K2EDTA plasma. Changing the counter ion of EDTA from potassium to sodium dramatically changed the retention behavior and matrix effect of norepinephrine. CONCLUSIONS It is necessary to evaluate blood collection tubes for catecholamines and their O-methylated metabolites analyzed by LC-MS/MS. In addition, attention should also be paid when the anticoagulant counter ion was changed.
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Affiliation(s)
- Rong Su
- FoShan Hospital of Traditional Chinese Medicine, FoShan, China
| | - Yanjie Wu
- Guang Dong Bio-Healtech Advanced Co., Ltd., Foshan, China
| | - Qiuyi Huang
- Guang Dong Bio-Healtech Advanced Co., Ltd., Foshan, China
| | - Shengchun Huang
- FoShan Hospital of Traditional Chinese Medicine, FoShan, China
| | - Yao Li
- FoShan Hospital of Traditional Chinese Medicine, FoShan, China
| | - Caifeng Chen
- Guang Dong Bio-Healtech Advanced Co., Ltd., Foshan, China
| | - Wenchun Xie
- Guang Dong Bio-Healtech Advanced Co., Ltd., Foshan, China
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yan Li
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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Casey RT, Hendriks E, Deal C, Waguespack SG, Wiegering V, Redlich A, Akker S, Prasad R, Fassnacht M, Clifton-Bligh R, Amar L, Bornstein S, Canu L, Charmandari E, Chrisoulidou A, Freixes MC, de Krijger R, de Sanctis L, Fojo A, Ghia AJ, Huebner A, Kosmoliaptsis V, Kuhlen M, Raffaelli M, Lussey-Lepoutre C, Marks SD, Nilubol N, Parasiliti-Caprino M, Timmers HHJLM, Zietlow AL, Robledo M, Gimenez-Roqueplo AP, Grossman AB, Taïeb D, Maher ER, Lenders JWM, Eisenhofer G, Jimenez C, Pacak K, Pamporaki C. International consensus statement on the diagnosis and management of phaeochromocytoma and paraganglioma in children and adolescents. Nat Rev Endocrinol 2024:10.1038/s41574-024-01024-5. [PMID: 39147856 DOI: 10.1038/s41574-024-01024-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/17/2024] [Indexed: 08/17/2024]
Abstract
Phaeochromocytomas and paragangliomas (PPGL) are rare neuroendocrine tumours that arise not only in adulthood but also in childhood and adolescence. Up to 70-80% of childhood PPGL are hereditary, accounting for a higher incidence of metastatic and/or multifocal PPGL in paediatric patients than in adult patients. Key differences in the tumour biology and management, together with rare disease incidence and therapeutic challenges in paediatric compared with adult patients, mandate close expert cross-disciplinary teamwork. Teams should ideally include adult and paediatric endocrinologists, oncologists, cardiologists, surgeons, geneticists, pathologists, radiologists, clinical psychologists and nuclear medicine physicians. Provision of an international Consensus Statement should improve care and outcomes for children and adolescents with these tumours.
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Affiliation(s)
- Ruth T Casey
- Department of Medical Genetics, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge, UK.
- Department of Endocrinology, Cambridge Cancer Centre and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.
| | - Emile Hendriks
- Department of Paediatric Diabetes and Endocrinology, Cambridge Cancer Centre and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Cheri Deal
- Endocrine and Diabetes Service, CHU Sainte-Justine and University of Montreal, Montreal, Québec, Canada
| | - Steven G Waguespack
- Department of Endocrine Neoplasia and Hormonal Disorders, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Verena Wiegering
- University Children's Hospital, Department of Paediatric Hematology, Oncology and Stem Cell Transplantation, University of Würzburg, Würzburg, Germany
| | - Antje Redlich
- Paediatric Oncology Department, Otto von Guericke University Children's Hospital, Magdeburg, Germany
| | - Scott Akker
- St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Rathi Prasad
- Centre for Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Martin Fassnacht
- Department of Medicine, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, Würzburg, Germany
| | - Roderick Clifton-Bligh
- Department of Diabetes and Endocrinology, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Laurence Amar
- Université de Paris, Paris, France
- Hypertension Unit, Hôpital Européen Georges Pompidou, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - Stefan Bornstein
- Department of Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Letizia Canu
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, Azienda Ospedaliera Universitaria (AOU) Careggi, Florence, Italy
| | - Evangelia Charmandari
- Division of Endocrinology, Metabolism and Diabetes, First Department of Paediatrics, National and Kapodistrian University of Athens Medical School, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | | | - Maria Currás Freixes
- Hereditary Endocrine Cancer Group, Spanish National Cancer Research Centre (CNIO) and Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - Ronald de Krijger
- Princess Maxima Center for Paediatric Oncology, Utrecht, Netherlands
- Department of Pathology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Luisa de Sanctis
- Department of Public Health and Paediatric Sciences, University of Turin, Turin, Italy
| | - Antonio Fojo
- Division of Hematology/Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, USA
| | - Amol J Ghia
- Department of Radiation Oncology, University Hospital of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Angela Huebner
- Department of Paediatrics, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Vasilis Kosmoliaptsis
- Department of Surgery, University of Cambridge and National Institute for Health Research Cambridge Biomedical Research Centre, Addenbrooke's Hospital, Cambridge, UK
- Blood and Transplant Research Unit in Organ Donation and Transplantation, National Institute for Health Research, University of Cambridge, Cambridge, UK
| | - Michaela Kuhlen
- Paediatrics and Adolescent Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
| | - Marco Raffaelli
- U.O.C. Chirurgia Endocrina e Metabolica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Istituto di Semeiotica Chirurgica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Charlotte Lussey-Lepoutre
- Service de médecine nucléaire, Inserm U970, Sorbonne université, Groupe hospitalier Pitié-Salpétrière, Paris, France
| | - Stephen D Marks
- Department of Paediatric Nephrology, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR GOSH Biomedical Research Centre, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Naris Nilubol
- Surgical Oncology Program, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Mirko Parasiliti-Caprino
- Endocrinology, Diabetes and Metabolism, Department of Medical Sciences, University of Turin, Corso Dogliotti, Turin, Italy
| | - Henri H J L M Timmers
- Department of Internal Medicine, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Anna Lena Zietlow
- Clinical Child and Adolescent Psychology, Institute of Clinical Psychology and Psychotherapy, Department of Psychology, TU Dresden, Dresden, Germany
| | - Mercedes Robledo
- Hereditary Endocrine Cancer Group, Spanish National Cancer Research Centre (CNIO) and Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - Anne-Paule Gimenez-Roqueplo
- Université Paris Cité, PARCC, INSERM, Paris, France
- Service de Génétique, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Paris, France
| | - Ashley B Grossman
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
- Centre for Endocrinology, Barts and the London School of Medicine, London, UK
- ENETS Centre of Excellence, Royal Free Hospital, London, UK
| | - David Taïeb
- Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, Marseille, France
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge, UK
| | - Jacques W M Lenders
- Department of Internal Medicine, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Graeme Eisenhofer
- Department of Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Camilo Jimenez
- Department of Endocrine Neoplasia and Hormonal Disorders, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Rockville, MD, USA
| | - Christina Pamporaki
- Department of Medicine III, University Hospital Carl Gustav Carus, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
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Harahap Y, Salsabila S, Saputri FA. Development and validation of ivermectin quantification method in volumetric absorptive microsampling using liquid chromatography-tandem mass spectrometry. Heliyon 2024; 10:e29606. [PMID: 38665567 PMCID: PMC11044035 DOI: 10.1016/j.heliyon.2024.e29606] [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: 10/29/2023] [Revised: 03/14/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Background Ivermectin is a broad-spectrum anthelmintic used to control onchocerciasis from nematode parasites. As an anthelmintic, ivermectin is designed to have high levels in the gastrointestinal tract, so that the systemic intake is relatively low. Due to the very small concentration of ivermectin, a selective and sensitive approach is needed for the analysis of ivermectin in blood. Several methods have been developed using plasma and Dried Blood Spots, but there are still shortcomings due to hematocrit effects. Therefore, this study was conducted to establish a validated ivermectin analysis method with doramectin as the internal standard in using Ultra High-Performance Liquid Chromatography-Tandem Mass Spectrometry. Methods Mass spectrometry equipped with triple quadrupole and positive electrospray ionization mode was used to conduct the analysis. For the biological matrix, whole blood was used by Volumetric Absorptive Microsampling and extracted using a protein precipitation technique with a combination of acetonitrile and methanol (1:1). VAMS has some advantages such as not being affected by hematocrit, requires a small and fixed volume of sample, also a more efficient sampling process. Results The optimum conditions were achieved with an Acquity® UPLC BEH C18 column (1,7 μm; 2.1 × 100 mm); extracted-flow rate was 0,2 mL/min; mobile phase was 5 mM ammonium formate pH 3.00 and acetonitrile (10:90) with isocratic elution. Multiple Reaction Monitoring (MRM) detection by m/z values was 892.41 > 569.5 for ivermectin and 916,41 > 331,35 for doramectin. Conclusion The method has been appropriately validated in compliance with the 2018 guidelines laid out by the US Food and Drug Administration. Resulting the minimum detection (LLOQ) was 1 ng/mL with a linear concentration range spanning from 1 to 150 ng/mL.
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Affiliation(s)
- Yahdiana Harahap
- Faculty of Pharmacy, Universitas Indonesia, Depok, Indonesia
- Faculty of Military Pharmacy, Republic of Indonesia Defense University, Bogor, Indonesia
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Sastry S, March CA, McPhaul MJ, Garibaldi LR. Very elevated serum copeptin concentrations occur in a subset of healthy children in the minutes after phlebotomy. J Pediatr Endocrinol Metab 2024; 37:8-14. [PMID: 37991411 PMCID: PMC10919260 DOI: 10.1515/jpem-2023-0390] [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: 08/23/2023] [Accepted: 11/08/2023] [Indexed: 11/23/2023]
Abstract
OBJECTIVES Although AVP and its surrogate, copeptin, are mainly regulated by osmotic and volume stimuli, their secretion is also elicited by stress and growth hormone (GH) stimulating agents. The aim of this report is to describe unusual patterns of copeptin response in a subset of children undergoing GH stimulation tests (GH-ST). METHODS We conducted a secondary analysis of a cohort of 93 healthy short children with no polydipsia, polyuria or fluid/electrolyte abnormalities, undergoing GH-ST with intravenous arginine, insulin, oral clonidine, or L-Dopa/carbidopa in various combinations. Serum copeptin concentrations were measured 1-3 min after phlebotomy (0 min) and at 60, 90, 120 min during GH-ST. RESULTS In 85 subjects (normal response group, NRG) serum copeptin concentrations increased from a 0 min median of 9 pmol/L (IQR 6, 11.5) (all values ≤21) to a median peak between 60 and 120 min of 22 (IQR15, 38) pmol/L, which varied depending on the stimulating agent. Conversely, in the eight outliers, copeptin concentrations decreased gradually from a median of 154 (IQR 61, 439) pmol/L (all ≥40 pmol/L) to values as low as 14 % of the basal value, by 120 min. Test-associated anxiety was described in 17 subjects in the NRG (20 %) and five of the outliers (63 %). CONCLUSIONS A distinctive pattern of very elevated serum copeptin concentrations occurred in 9 % of children undergoing GH-ST, similar to reports in previous pediatric studies. Etiology may include pain or stress of phlebotomy. This phenomenon should be recognized for proper interpretation of copeptin values in children.
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Affiliation(s)
- Shruti Sastry
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Pediatric Endocrinology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Christine A March
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Pediatric Endocrinology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | | | - Luigi R Garibaldi
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Pediatric Endocrinology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
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5
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Eisenhofer G, Pamporaki C, Lenders JWM. Biochemical Assessment of Pheochromocytoma and Paraganglioma. Endocr Rev 2023; 44:862-909. [PMID: 36996131 DOI: 10.1210/endrev/bnad011] [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: 09/28/2022] [Revised: 01/24/2023] [Accepted: 03/29/2023] [Indexed: 03/31/2023]
Abstract
Pheochromocytoma and paraganglioma (PPGL) require prompt consideration and efficient diagnosis and treatment to minimize associated morbidity and mortality. Once considered, appropriate biochemical testing is key to diagnosis. Advances in understanding catecholamine metabolism have clarified why measurements of the O-methylated catecholamine metabolites rather than the catecholamines themselves are important for effective diagnosis. These metabolites, normetanephrine and metanephrine, produced respectively from norepinephrine and epinephrine, can be measured in plasma or urine, with choice according to available methods or presentation of patients. For patients with signs and symptoms of catecholamine excess, either test will invariably establish the diagnosis, whereas the plasma test provides higher sensitivity than urinary metanephrines for patients screened due to an incidentaloma or genetic predisposition, particularly for small tumors or in patients with an asymptomatic presentation. Additional measurements of plasma methoxytyramine can be important for some tumors, such as paragangliomas, and for surveillance of patients at risk of metastatic disease. Avoidance of false-positive test results is best achieved by plasma measurements with appropriate reference intervals and preanalytical precautions, including sampling blood in the fully supine position. Follow-up of positive results, including optimization of preanalytics for repeat tests or whether to proceed directly to anatomic imaging or confirmatory clonidine tests, depends on the test results, which can also suggest likely size, adrenal vs extra-adrenal location, underlying biology, or even metastatic involvement of a suspected tumor. Modern biochemical testing now makes diagnosis of PPGL relatively simple. Integration of artificial intelligence into the process should make it possible to fine-tune these advances.
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Affiliation(s)
- Graeme Eisenhofer
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Christina Pamporaki
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Jacques W M Lenders
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Department of Internal Medicine, Radboud University Medical Centre, 6500 HB Nijmegen, The Netherlands
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6
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Tsiomidou S, Pamporaki C, Geroula A, Van Baal L, Weber F, Dralle H, Schmid KW, Führer D, Unger N. Clonidine suppression test for a reliable diagnosis of pheochromocytoma: When to use. Clin Endocrinol (Oxf) 2022; 97:541-550. [PMID: 35274752 DOI: 10.1111/cen.14724] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE In clinical practice, false-positive results in biochemical testing for suspected pheochromocytoma/paraganglioma (PPGL) are not infrequent and may lead to unnecessary examinations. We aimed to evaluate the role of the clonidine suppression test (CST) in the era of analyses of plasma-free metanephrines for the diagnosis or exclusion of PPGL in patients with adrenal tumours and/or arterial hypertension. DESIGN AND METHODS This single-centre, prospective trial investigated the use of CST in 60 patients with suspected PPGL associated with out-patient elevations of plasma normetanephrine (NMN) and/or metanephrine (MN), in most cases accompanied with hypertension or an adrenal mass. Measurements of plasma catecholamines and free metanephrines were performed by liquid chromatography with electrochemical detection and tandem mass spectrometry, respectively. RESULTS Forty-six patients entered final analysis (n = 20 with PPGL and n = 26 with a nonfunctional adrenal mass and/or hypertension). CST reliably excluded false-positive baseline NMN results with a specificity of 100%. The sensitivity of CST improved from 85% to 94% when tumours with isolated MN increase (n = 3) were not considered. In patients with elevated baseline NMN (n = 24), CST correctly identified all patients without PPGL. Patients with falsely elevated baseline NMN results (n = 7, 26.9%) exhibited increases of baseline NMN up to 1.7-fold above the upper reference limit. CONCLUSION CST qualifies as a useful diagnostic tool for differential diagnosis of borderline elevated plasma-free NMN in patients with suspected PPGL. In this context, CST helps to correctly identify all false-positive NMN screening results.
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Affiliation(s)
- Spyridoula Tsiomidou
- Department of Endocrinology, Diabetes and Metabolism, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Christina Pamporaki
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Aikaterini Geroula
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lukas Van Baal
- Department of Endocrinology, Diabetes and Metabolism, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Frank Weber
- Division of Endocrine Surgery, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Henning Dralle
- Division of Endocrine Surgery, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Kurt W Schmid
- Institute of Pathology, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Dagmar Führer
- Department of Endocrinology, Diabetes and Metabolism, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Nicole Unger
- Department of Endocrinology, Diabetes and Metabolism, Endocrine Tumour Centre at WTZ and Member of ENDO-ERN, University Hospital Essen, University Duisburg-Essen, Essen, Germany
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7
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Pommer G, Pamporaki C, Peitzsch M, Remde H, Deutschbein T, Nölting S, Müller LM, Braun L, Gruber S, Pecori A, Hampson S, Davies E, Stell A, Rossi GP, Lenzini L, Ceccato F, Timmers HJLM, Deinum J, Amar L, Blanchard A, Baron S, Fassnacht M, Dobrowolski P, Januszewicz A, Zennaro MC, Prejbisz A, Eisenhofer G. Preanalytical Considerations and Outpatient Versus Inpatient Tests of Plasma Metanephrines to Diagnose Pheochromocytoma. J Clin Endocrinol Metab 2022; 107:e3689-e3698. [PMID: 35767279 DOI: 10.1210/clinem/dgac390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 11/19/2022]
Abstract
CONTEXT Sampling of blood in the supine position for diagnosis of pheochromocytoma and paraganglioma (PPGL) results in lower rates of false positives for plasma normetanephrine than seated sampling. It is unclear how inpatient vs outpatient testing and other preanalytical factors impact false positives. OBJECTIVE We aimed to identify preanalytical precautions to minimize false-positive results for plasma metanephrines. METHODS Impacts of different blood sampling conditions on plasma metanephrines were evaluated, including outpatient vs inpatient testing, sampling of blood in semi- vs fully recumbent positions, use of cannulae vs direct venipuncture, and differences in outside temperature. A total of 3147 patients at 10 tertiary referral centers were tested for PPGL, including 278 with and 2869 without tumors. Rates of false-positive results were analyzed. RESULTS Outpatient rather than inpatient sampling resulted in 44% higher plasma concentrations and a 3.4-fold increase in false-positive results for normetanephrine. Low temperature, a semi-recumbent position, and direct venipuncture also resulted in significantly higher plasma concentrations and rates of false-positive results for plasma normetanephrine than alternative sampling conditions, although with less impact than outpatient sampling. Higher concentrations and rates of false-positive results for plasma normetanephrine with low compared with warm temperatures were only apparent for outpatient sampling. Preanalytical factors were without impact on plasma metanephrines in patients with PPGL. CONCLUSION Although inpatient blood sampling is largely impractical for screening patients with suspected PPGL, other preanalytical precautions (eg, cannulae, warm testing conditions) may be useful. Inpatient sampling may be reserved for follow-up of patients with difficult to distinguish true- from false-positive results.
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Affiliation(s)
- Georg Pommer
- Institute of Clinical Genetics, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Christina Pamporaki
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Mirko Peitzsch
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Hanna Remde
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97082 Würzburg, Germany
| | - Timo Deutschbein
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97082 Würzburg, Germany
- Medicover Oldenburg MVZ, 26122 Oldenburg, Germany
| | - Svenja Nölting
- Department of Medicine IV, University Hospital, Ludwig Maximilian University of Munich, 80336 Munich, Germany
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich and University of Zurich, CH-8091Zurich, Switzerland
| | - Lisa Marie Müller
- Department of Medicine IV, University Hospital, Ludwig Maximilian University of Munich, 80336 Munich, Germany
| | - Leah Braun
- Department of Medicine IV, University Hospital, Ludwig Maximilian University of Munich, 80336 Munich, Germany
| | - Sven Gruber
- Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich and University of Zurich, CH-8091Zurich, Switzerland
| | - Alessio Pecori
- Department of Medical Sciences, University of Torino, 10126 Turin, Italy
| | - Stephanie Hampson
- Institute of Cardiovascular & Medical Sciences, University of Glasgow, G12 8TA Glasgow, UK
| | - Eleanor Davies
- Institute of Cardiovascular & Medical Sciences, University of Glasgow, G12 8TA Glasgow, UK
| | - Anthony Stell
- School of Computing and Information Systems, University of Melbourne, Melbourne, 3052 Victoria, Australia
| | - Gian Paolo Rossi
- Department of Medicine-DIMED, University of Padua, 35128 Padua, Italy
| | - Livia Lenzini
- Department of Medicine-DIMED, University of Padua, 35128 Padua, Italy
| | - Filippo Ceccato
- Department of Medicine-DIMED, University of Padua, 35128 Padua, Italy
| | - Henri J L M Timmers
- Department of Internal Medicine, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
| | - Jaap Deinum
- Department of Internal Medicine, Radboud University Medical Centre, 6525 GA Nijmegen, The Netherlands
| | - Laurence Amar
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
- Unité Hypertension artérielle - Centre de Reference en Maladies Rares des Surrénales, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Anne Blanchard
- Centre d'Investigations Cliniques, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Stephanie Baron
- Service de Physiologie, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Martin Fassnacht
- Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital, University of Würzburg, 97082 Würzburg, Germany
| | - Piotr Dobrowolski
- Department of Hypertension, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Andrzej Januszewicz
- Department of Hypertension, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Maria-Christina Zennaro
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
- Service de Génétique, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, 75015 Paris, France
| | - Aleksander Prejbisz
- Department of Hypertension, National Institute of Cardiology, 04-628 Warsaw, Poland
| | - Graeme Eisenhofer
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
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8
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Eisenhofer G, Peitzsch M, Bechmann N, Huebner A. Biochemical Diagnosis of Catecholamine-Producing Tumors of Childhood: Neuroblastoma, Pheochromocytoma and Paraganglioma. Front Endocrinol (Lausanne) 2022; 13:901760. [PMID: 35957826 PMCID: PMC9360409 DOI: 10.3389/fendo.2022.901760] [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: 03/22/2022] [Accepted: 06/09/2022] [Indexed: 11/13/2022] Open
Abstract
Catecholamine-producing tumors of childhood include most notably neuroblastoma, but also pheochromocytoma and paraganglioma (PPGL). Diagnosis of the former depends largely on biopsy-dependent histopathology, but this is contraindicated in PPGL where diagnosis depends crucially on biochemical tests of catecholamine excess. Such tests retain some importance in neuroblastoma though continue to largely rely on measurements of homovanillic acid (HVA) and vanillylmandelic acid (VMA), which are no longer recommended for PPGL. For PPGL, urinary or plasma metanephrines are the recommended most accurate tests. Addition of methoxytyramine to the plasma panel is particularly useful to identify dopamine-producing tumors and combined with normetanephrine also shows superior diagnostic performance over HVA and VMA for neuroblastoma. While use of metanephrines and methoxytyramine for diagnosis of PPGL in adults is established, there are numerous pitfalls for use of these tests in children. The establishment of pediatric reference intervals is particularly difficult and complicated by dynamic changes in metabolites during childhood, especially in infants for both plasma and urinary measurements, and extending to adolescence for urinary measurements. Interpretation of test results is further complicated in children by difficulties in following recommended preanalytical precautions. Due to this, the slow growing nature of PPGL and neglected consideration of the tumors in childhood the true pediatric prevalence of PPGL is likely underappreciated. Earlier identification of disease, as facilitated by surveillance programs, may uncover the true prevalence and improve therapeutic outcomes of childhood PPGL. For neuroblastoma there remain considerable obstacles in moving from entrenched to more accurate tests of catecholamine excess.
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Affiliation(s)
- Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
- Department of Internal Medicine III, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
- *Correspondence: Graeme Eisenhofer,
| | - Mirko Peitzsch
- Institute of Clinical Chemistry and Laboratory Medicine, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Nicole Bechmann
- Institute of Clinical Chemistry and Laboratory Medicine, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Angela Huebner
- Department of Pediatrics, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
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9
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Kline GA, Boyd J, Polzin B, Harvey A, Pasieka JL, Sadrzadeh HSM, Leung AA. Properly Collected Plasma Metanephrines Excludes PPGL After False-Positive Screening Tests. J Clin Endocrinol Metab 2021; 106:e2900-e2906. [PMID: 33846745 DOI: 10.1210/clinem/dgab241] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT False-positive results are common for pheochromocytoma/paraganglioma (PPGL) real-world screening. OBJECTIVE Determine the correlation between screening urine and seated plasma metanephrines in outpatients where PPGL was absent, compared to meticulously prepared and supine-collected plasma metanephrines with age-adjusted references. DESIGN Retrospective cohort study. SETTING Databases from a single-provider provincial laboratory (2012-2018), a validated PPGL registry, and a manual chart review from a specialized endocrine testing unit. PATIENTS PPGL registry data excluded known PPGL cases from the laboratory database. Outpatients having both urine and plasma metanephrines <90 days apart. METHODS The correlation between urine and seated plasma measures along with the total positivity rate. All cases of plasma metanephrines drawn in the endocrine unit were reviewed for test indication and test positivity rate. RESULTS There were 810 non-PPGL pairs of urine and plasma metanephrines in the laboratory database; 46.1% of urine metanephrines were reported high. Of seated outpatient plasma metanephrines drawn a median of 5.9 days later, 19.2% were also high (r = 0.33 and 0.50 for normetanephrine and metanephrine, respectively). In contrast, the meticulously prepared and supine collected patients (n = 139, 51% prior high urine metanephrines) had <3% rate of abnormal high results in patients without known PPGL/adrenal mass. CONCLUSIONS There was a poor-to-moderate correlation between urine and seated plasma metanephrines. Up to 20% of those with high urine measures also had high seated plasma metanephrines in the absence of PPGL. Properly prepared and collected supine plasma metanephrines had a false-positive rate of <3% in the absence of known PPGL/adrenal mass.
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Affiliation(s)
- Gregory A Kline
- Cumming School of Medicine, Department of Medicine, University of Calgary, Calgary, Canada
| | - Jessica Boyd
- Department of Clinical Pathology and Laboratory Medicine, University of Calgary, Calgary, Canada
- Alberta Precision Laboratories, Calgary, Canada
| | | | - Adrian Harvey
- Cumming School of Medicine, Department of Surgery, University of Calgary, Calgary, Canada
| | - Janice L Pasieka
- Cumming School of Medicine, Department of Surgery, University of Calgary, Calgary, Canada
| | - Hossein S M Sadrzadeh
- Department of Clinical Pathology and Laboratory Medicine, University of Calgary, Calgary, Canada
- Alberta Precision Laboratories, Calgary, Canada
| | - Alexander A Leung
- Cumming School of Medicine, Department of Medicine, University of Calgary, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
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10
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Eijkelenkamp K, Osinga TE, van Faassen M, Kema IP, Kerstens MN, Pacak K, Sluiter WJ, Links TP, van der Horst-Schrivers ANA. Diagnostic Accuracy of Salivary Metanephrines in Pheochromocytomas and Paragangliomas. Clin Chem 2021; 67:1090-1097. [PMID: 34096581 DOI: 10.1093/clinchem/hvab064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 03/24/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND Measurements of plasma free metanephrines are recommended for diagnosing pheochromocytomas and paragangliomas (PPGL). Metanephrines can be detected in saliva with LC-MS/MS with sufficient analytical sensitivity and precision. Because collecting saliva is noninvasive and less cumbersome than plasma or urine sampling, we assessed the diagnostic accuracy of salivary metanephrines in diagnosing PPGL. METHODS This 2-center study included 118 healthy participants (44 men; mean age: 33 years (range: 19--74 years)), 44 patients with PPGL, and 54 patients suspected of PPGL. Metanephrines were quantified in plasma and saliva using LC-MS/MS. Diagnostic accuracy; correlation between plasma and salivary metanephrines; and potential factors influencing salivary metanephrines, including age, sex, and posture during sampling, were assessed. RESULTS Salivary metanephrines were significantly higher in patients with PPGL compared with healthy participants (metanephrine (MN): 0.19 vs 0.09 nmol/L, P < 0.001; normetanephrine (NMN): 2.90 vs 0.49 nmol/L, P < 0.001). The diagnostic sensitivity and specificity of salivary metanephrines were 89% and 87%, respectively. Diagnostic accuracy of salivary metanephrines was 88%, with an area under the ROC curve of 0.880. We found a significant correlation between plasma and salivary metanephrines (Pearson correlation coefficient: MN, 0.86, P < 0.001; NMN, 0.83, P < 0.001). Salivary NMN concentrations were higher when collected in a seated position compared with supine (P < 0.001) and increased with age (P < 0.001). CONCLUSIONS Salivary metanephrines are a promising tool in the biochemical diagnosis of PPGL. Salivary metanephrines correlate with plasma free metanephrines and are increased in patients with PPGL. At this time, however, salivary metanephrines cannot replace measurement of plasma free metanephrines.
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Affiliation(s)
- Karin Eijkelenkamp
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Thamara E Osinga
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Martijn van Faassen
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Ido P Kema
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Michiel N Kerstens
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Karel Pacak
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Wim J Sluiter
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Thera P Links
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Anouk N A van der Horst-Schrivers
- Department of Endocrinology and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Department of Internal Medicine, Division of Endocrinology, Maastricht University Medical Center, Maastricht, the Netherlands
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11
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Eisenhofer G, Pamporaki C. Blood sampling for metanephrines: to stick or stick and wait? Clin Chem Lab Med 2020; 58:1609-1610. [PMID: 32286244 DOI: 10.1515/cclm-2020-0326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine and the Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307 Dresden, Germany
- Department of Internal Medicine III, Technische Universität Dresden, Dresden, Germany
| | - Christina Pamporaki
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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