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Ohno Y, Taura D, Okamoto K, Fujita H, Honda-Kohmo K, Matsuo K, Sone M. Nicotine reduces ROS and enhances cell proliferation via the α4 nicotinic acetylcholine receptor subunit in human induced pluripotent stem cells. Stem Cells Dev 2023; 32:237-245. [PMID: 36860198 DOI: 10.1089/scd.2022.0258] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
The effects of smoking on fetal development and stem cell differentiation are not fully understood. Although nicotinic acetylcholine receptors (nAChRs) are expressed in many organs of the human body, their significance in human induced pluripotent stem cells (hiPSCs) remains unclear. After expression levels of nAChR subunits in hiPSCs were determined, the effects of the nAChR agonist, nicotine, on undifferentiated hiPSCs were evaluated using a Clariom S Array. We also determined the effect of nicotine alone and with a nAChR subunit antagonist on hiPSC cells. NAChR α4, α7, and β4 subunits were strongly expressed in hiPSCs. cDNA microarray, gene ontology, and enrichment analyses showed that exposing hiPSCs to nicotine altered expression of genes associated with immune responses, neurological system, carcinogenesis, cell differentiation, and cell proliferation. Particularly affected was metallothionein, which acts to decrease reactive oxygen species (ROS). The nicotine-induced reduction of ROS in hiPSCs was canceled by an α4 subunit or nonselective nAChR antagonist. HiPSC proliferation was increased by nicotine, and this effect, too, was canceled by an α4 antagonist. In conclusion, nicotine reduces ROS and enhances cell proliferation via the α4 nAChR subunit in hiPSCs. These findings provide new insight into the significance of nAChRs on human stem cells and fertilized human ova.
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Affiliation(s)
- Youichi Ohno
- Kyoto University Graduate School of Medicine, Department of Diabetes, Endocrinology and Nutrition, Kyoto, Japan;
| | - Daisuke Taura
- Kyoto University Graduate School of Medicine, Department of Diabetes, Endocrinology and Nutrition, Kyoto, Japan;
| | - Kentaro Okamoto
- Kyoto University Graduate School of Medicine, Department of Diabetes, Endocrinology and Nutrition, Kyoto, Japan;
| | - Haruka Fujita
- Kyoto University Graduate School of Medicine, Department of Diabetes, Endocrinology and Nutrition, Kyoto, Kyoto, Japan;
| | - Kyoko Honda-Kohmo
- National Cerebral and Cardiovascular Center, 13875, Division of Preventive Healthcare, Suita, Osaka, Japan;
| | - Koji Matsuo
- Kyoto University Graduate School of Medicine, Department of Diabetes, Endocrinology and Nutrition, Kyoto, Japan;
| | - Masakatsu Sone
- St Marianna University School of Medicine, 12927, Division of Metabolism and Endocrinology, Department of Internal Medicine, Kawasaki, Kanagawa, Japan;
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Remes SM, Leijon H, Vesterinen T, Louhimo J, Pulkkinen V, Ezer S, Kere J, Haglund C, Arola J. PCSK2 expression in neuroendocrine tumors points to a midgut, pulmonary, or pheochromocytoma-paraganglioma origin. APMIS 2020; 128:563-572. [PMID: 32794589 PMCID: PMC7702075 DOI: 10.1111/apm.13071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/29/2020] [Indexed: 02/06/2023]
Abstract
Neuroendocrine tumors (NETs) are often diagnosed from the metastases of an unknown primary tumor. Specific immunohistochemical (IHC) markers indicating the location of a primary tumor are needed. The proprotein convertase subtilisin/kexin type 2 (PCSK2) is found in normal neural and neuroendocrine cells, and known to express in NETs. We investigated the tissue microarray (TMA) of 86 primary tumors from 13 different organs and 9 metastatic NETs, including primary tumor‐metastasis pairs, for PCSK2 expression with polymer‐based IHC. PCSK2 was strongly positive in all small intestine and appendiceal NETs, the so‐called midgut NETs, in most pheochromocytomas and paragangliomas, and in some of the typical and atypical pulmonary carcinoid tumors. NETs showing strong positivity were re‐evaluated in larger tumor cohorts confirming the primary observation. In the metastases, the expression of PCSK2 mirrored that of the corresponding primary tumors. We found negative or weak staining in NETs from the thymus, gastric mucosa, pancreas, rectum, thyroid, and parathyroid. PCSK2 expression did not correlate with Ki‐67 in well‐differentiated NETs. Our data suggest that PCSK2 positivity can indicate the location of the primary tumor. Thus, PCSK2 could function in the IHC panel determined from screening metastatic NET biopsies of unknown primary origins.
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Affiliation(s)
- Satu Maria Remes
- Department of Pathology, Helsinki University Hospital and HUSLAB, University of Helsinki, Helsinki, Finland
| | - Helena Leijon
- Department of Pathology, Helsinki University Hospital and HUSLAB, University of Helsinki, Helsinki, Finland
| | - Tiina Vesterinen
- Department of Pathology, Helsinki University Hospital and HUSLAB, University of Helsinki, Helsinki, Finland.,Institute for Molecular Medicine Finland, Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Johanna Louhimo
- Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ville Pulkkinen
- Heart and Lung Center, Division of Pulmonary Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Sini Ezer
- Research Programs Unit, Program for Molecular Neurology, University of Helsinki, Helsinki, Finland
| | - Juha Kere
- Research Programs Unit, Program for Molecular Neurology, University of Helsinki, Helsinki, Finland.,Folkhälsan Institute of Genetics, Helsinki, Finland.,Department of Biosciences and Nutrition, Karolinska Institutet, Novum, Stockholm, Sweden
| | - Caj Haglund
- Department of Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Translational Cancer Medicine, Research Program Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Johanna Arola
- Department of Pathology, Helsinki University Hospital and HUSLAB, University of Helsinki, Helsinki, Finland
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Stenman A, Zedenius J, Juhlin CC. Retrospective application of the pathologic tumor-node-metastasis classification system for pheochromocytoma and abdominal paraganglioma in a well characterized cohort with long-term follow-up. Surgery 2019; 166:901-906. [PMID: 31239074 DOI: 10.1016/j.surg.2019.04.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/09/2019] [Accepted: 04/29/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND A pathologic tumor-node-metastasis staging algorithm for pheochromocytoma and sympathetic paraganglioma was introduced recently in the 8th Edition of the cancer staging manual of the American Joint Committee on Cancer. There is no information, however, as to how this staging correlates to well-established clinical cohorts of pheochromocytoma and sympathetic paraganglioma with extensive follow-up. METHODS We applied the pathologic tumor-node-metastasis staging retrospectively to a cohort of 118 patients with pheochromocytoma and sympathetic paraganglioma, in which the majority has been characterized for susceptibility gene mutations and global mRNA expressional patterns as well as histologic risk criteria using the pheochromocytoma of the adrenal gland scaled score (PASS). RESULTS The overall tumor stage correlated with the presence of metastases, disease-related death, and PASS scores as well as established mutational and expressional clusters. CONCLUSION Stage III to IV pheochromocytomas and sympathetic paragangliomas are associated with increased mortality, increased PASS scores, and mutational and expressional aberrancies in the pseudo-hypoxia pathway cluster. These findings validate the stratification proposed by the American Joint Committee on Cancer staging manual by linking malignancy-associated pheno- and genotypes to more advanced stages. Moreover, because few pheochromocytomas and sympathetic paragangliomas are metastatic at the time of the original presentation, the staging relies heavily on identifying histologic signs of extra-adrenal invasion.
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Affiliation(s)
- Adam Stenman
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, CCK, Stockholm, Sweden; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Breast, Endocrine Tumours and Sarcoma, Karolinska University Hospital, Stockholm, Sweden.
| | - Jan Zedenius
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Department of Breast, Endocrine Tumours and Sarcoma, Karolinska University Hospital, Stockholm, Sweden
| | - Carl Christofer Juhlin
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, CCK, Stockholm, Sweden; Department of Pathology and Cytology, Karolinska University Hospital, Stockholm, Sweden
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Harno E, Gali Ramamoorthy T, Coll AP, White A. POMC: The Physiological Power of Hormone Processing. Physiol Rev 2019; 98:2381-2430. [PMID: 30156493 DOI: 10.1152/physrev.00024.2017] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Pro-opiomelanocortin (POMC) is the archetypal polypeptide precursor of hormones and neuropeptides. In this review, we examine the variability in the individual peptides produced in different tissues and the impact of the simultaneous presence of their precursors or fragments. We also discuss the problems inherent in accurately measuring which of the precursors and their derived peptides are present in biological samples. We address how not being able to measure all the combinations of precursors and fragments quantitatively has affected our understanding of the pathophysiology associated with POMC processing. To understand how different ratios of peptides arise, we describe the role of the pro-hormone convertases (PCs) and their tissue specificities and consider the cellular processing pathways which enable regulated secretion of different peptides that play crucial roles in integrating a range of vital physiological functions. In the pituitary, correct processing of POMC peptides is essential to maintain the hypothalamic-pituitary-adrenal axis, and this processing can be disrupted in POMC-expressing tumors. In hypothalamic neurons expressing POMC, abnormalities in processing critically impact on the regulation of appetite, energy homeostasis, and body composition. More work is needed to understand whether expression of the POMC gene in a tissue equates to release of bioactive peptides. We suggest that this comprehensive view of POMC processing, with a focus on gaining a better understanding of the combination of peptides produced and their relative bioactivity, is a necessity for all involved in studying this fascinating physiological regulatory phenomenon.
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Affiliation(s)
- Erika Harno
- Division of Diabetes, Endocrinology and Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester , United Kingdom ; and MRC Metabolic Diseases Unit, Wellcome Trust-MRC Institute of Metabolic Science , Cambridge , United Kingdom
| | - Thanuja Gali Ramamoorthy
- Division of Diabetes, Endocrinology and Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester , United Kingdom ; and MRC Metabolic Diseases Unit, Wellcome Trust-MRC Institute of Metabolic Science , Cambridge , United Kingdom
| | - Anthony P Coll
- Division of Diabetes, Endocrinology and Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester , United Kingdom ; and MRC Metabolic Diseases Unit, Wellcome Trust-MRC Institute of Metabolic Science , Cambridge , United Kingdom
| | - Anne White
- Division of Diabetes, Endocrinology and Gastrointestinal Sciences, Faculty of Biology, Medicine and Health, University of Manchester , Manchester , United Kingdom ; and MRC Metabolic Diseases Unit, Wellcome Trust-MRC Institute of Metabolic Science , Cambridge , United Kingdom
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Lau D, Rutledge C, Aghi MK. Cushing's disease: current medical therapies and molecular insights guiding future therapies. Neurosurg Focus 2015; 38:E11. [PMID: 25639313 DOI: 10.3171/2014.10.focus14700] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Cushing's disease (CD) can lead to significant morbidity secondary to hormonal sequelae or mass effect from the pituitary tumor. A transsphenoidal approach to resection of the adrenocorticotropic hormone (ACTH)-secreting pituitary adenoma is the first-line treatment. However, in the setting in which patients are unable to undergo surgery, have acute hypercortisolism, or have recurrent disease, medical therapy can play an important role. The authors performed a systematic review to highlight the efficacy of medical treatment of CD and discuss novel molecular insights that could guide the development of future medical treatments of CD. METHODS A search on current medical therapies for CD was performed. After individual medical therapeutic agents for CD were identified, each agent underwent a formal systematic search. The phrase "(name of agent) and Cushing's" was used as a search term in PubMed for all years up to 2014. The abstract of each article was reviewed for studies that evaluated the efficacy of medical treatment of CD. Only studies that enrolled at least 20 patients were included in the review. RESULTS A total of 11 articles on 6 individual agents were included in this review. Specific medical therapies were categorized based on the level of action: pituitary directed (cabergoline and pasireotide), adrenal/steroidogenesis directed (ketoconazole, metyrapone, and mitotane), and end-tissue directed/cortisol receptors (mifepristone). The studies identified consisted of a mix of retrospective reviews and small clinical trials. Only pasireotide and mifepristone have undergone Phase III clinical trials, from which they garnered FDA approval for the treatment of patients with CD. Overall, agents targeting ACTH secretion and steroidogenesis were found to be quite effective in reducing urine free cortisol (UFC) to levels near normal. A significant reduction in UFC was observed in 45%-100% of patients and a majority of patients gained clinical improvement. Similarly, inhibition at the end-tissue level led to clinical improvement in 87% of patients. However, side-effect rates associated with these drugs are high (up to 88%). Ketoconazole has been shown to enhance tumor appearance on MRI to facilitate pituitary resection. Promising molecular targets have been identified, including epidermal growth factor receptor, retinoic acid receptors, and cyclin dependent kinases. These pathways have been linked to the regulation of pro-opiomelanocortin expression, ACTH secretion, and tumor growth. CONCLUSIONS Despite encouraging Phase III clinical trials leading to FDA approval of 2 agents for treatment of patients with CD, no agent has yet produced results comparable to resection. As a result, the molecular insights gained into CD pathogenesis will need to continue to be expanded until they can lead to the development of medical therapies for CD with a favorable side-effect profile and efficacy comparable to resection. Ideally these agents should also reduce tumor size, which could potentially permit their eventual discontinuation.
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Affiliation(s)
- Darryl Lau
- Department of Neurological Surgery, University of California, San Francisco, California
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van Rijn SJ, Pouwer MG, Tryfonidou MA, Grinwis GCM, van der Bend JEE, Beukers PEPF, Vastenhout N, Drouin J, Penning LC, Meij BP. Expression and clinical relevance of paired box protein 7 and sex determining region Y-box 2 in canine corticotroph pituitary adenomas. Vet J 2015; 204:315-21. [PMID: 25956343 DOI: 10.1016/j.tvjl.2015.04.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 04/05/2015] [Accepted: 04/11/2015] [Indexed: 01/09/2023]
Abstract
Pituitary-dependent hypercortisolism is a common endocrinopathy in dogs, caused by an adrenocorticotrophic hormone secreting pituitary tumour of the anterior or intermediate lobe. The prognosis of intermediate lobe adenomas is worse than that of anterior lobe adenomas, indicating the possible usefulness of melanotropic markers as prognosticators. Another possible origin of pituitary adenomas is found in cancer stem cells. The aim of the present study was to investigate the expression of melanotroph specific transcription factor paired box protein 7 (Pax7) and stem cell marker and reprogramming factor sex determining region Y-box 2 (Sox2) and to relate their expression to clinical parameters. The mean ± SD of labelling index (LI) for Pax7 was 8.6% ± 21.7% in the adenomas; 1/6 controls had positive staining (LI, 15.2%). For Sox2, the LI in the adenomas was 16.9% ± 15.2% and 19.5% ± 11.6% in the controls. Pax7 expression was significantly higher in enlarged pituitaries, compared to non-enlarged pituitaries (P = 0.05), but Pax7 or Sox2 immunopositivity did not correlate to other clinical parameters such as histological diagnosis, survival time or disease-free interval. Gene expression of Pax7 target genes, such as proconvertase 2 (PC2), pro-opiomelanocortin (POMC), and dopamine D2 receptor (DRD2), was significantly lower in the adenoma samples compared to normal tissue, indicating that Pax7 signalling was not activated in adenomas. It was suggested that Pax7 and Sox2 remain interesting targets for molecular investigations into their role in pituitary tumorigenesis, but were unsuitable as clinical prognosticators in dogs.
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Affiliation(s)
- Sarah J van Rijn
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands.
| | - Marianne G Pouwer
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Marianna A Tryfonidou
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Guy C M Grinwis
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.514, 3508 TD Utrecht, The Netherlands
| | - Joanne E E van der Bend
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Pauline E P F Beukers
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Nadie Vastenhout
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Jacques Drouin
- Molecular Genetics Research Unit, Institut de recherches cliniques de Montréal, 110 avenue des Pins Ouest, Montréal, Quebec H2W 1R7, Canada
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
| | - Björn P Meij
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.154, 3508 TD Utrecht, The Netherlands
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Robbins HL, Hague A. The PI3K/Akt Pathway in Tumors of Endocrine Tissues. Front Endocrinol (Lausanne) 2015; 6:188. [PMID: 26793165 PMCID: PMC4707207 DOI: 10.3389/fendo.2015.00188] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/07/2015] [Indexed: 12/29/2022] Open
Abstract
The phosphatidylinositol 3-kinase (PI3K)/Akt pathway is a key driver in carcinogenesis. Defects in this pathway in human cancer syndromes such as Cowden's disease and Multiple Endocrine Neoplasia result in tumors of endocrine tissues, highlighting its importance in these cancer types. This review explores the growing evidence from multiple animal and in vitro models and from analysis of human tumors for the involvement of this pathway in the following: thyroid carcinoma subtypes, parathyroid carcinoma, pituitary tumors, adrenocortical carcinoma, phaeochromocytoma, neuroblastoma, and gastroenteropancreatic neuroendocrine tumors. While data are not always consistent, immunohistochemistry performed on human tumor tissue has been used alongside other techniques to demonstrate Akt overactivation. We review active Akt as a potential prognostic marker and the PI3K pathway as a therapeutic target in endocrine neoplasia.
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Affiliation(s)
- Helen Louise Robbins
- Department of General Surgery, University Hospital Coventry and Warwickshire, Coventry, UK
| | - Angela Hague
- School of Oral and Dental Sciences, School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
- *Correspondence: Angela Hague,
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Abstract
Cushing's disease (CD) is characterized by an ACTH-producing anterior corticotrope pituitary adenoma. If hypothalamus-pituitary-adrenal (HPA) axis physiology is disrupted, ACTH secretion increases, which in turn stimulates adrenocortical steroidogenesis and cortisol production. Medical treatment plays an important role for patients with persistent disease after surgery, for those in whom surgery is not feasible, or while awaiting effects of radiation. Multiple drugs, with different mechanisms of action and variable efficacy and tolerability for controlling the deleterious effects of chronic glucocorticoid excess, are available. The molecular basis and clinical data for centrally acting drugs, adrenal steroidogenesis inhibitors, and glucocorticoid receptor antagonists are reviewed, as are potential novel molecules and future possible targets for CD treatment. Although progress has been made in the understanding of specific corticotrope adenoma receptor physiology and recent clinical studies have detected improved effects with a combined medical therapy approach, there is a clear need for a more efficacious and better-tolerated medical therapy for patients with CD. A better understanding of the molecular mechanisms in CD and of HPA axis physiology should advance the development of new drugs in the future.
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Affiliation(s)
- Daniel Cuevas-Ramos
- Department of MedicinePituitary Center, Cedars-Sinai Medical Center, Los Angeles, California, USANeuroendocrinology ClinicDepartment of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, MexicoDepartments of Medicine and Neurological Surgeryand Northwest Pituitary Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Road (BTE 472), Portland, Oregon 97239, USA Department of MedicinePituitary Center, Cedars-Sinai Medical Center, Los Angeles, California, USANeuroendocrinology ClinicDepartment of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, MexicoDepartments of Medicine and Neurological Surgeryand Northwest Pituitary Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Road (BTE 472), Portland, Oregon 97239, USA
| | - Maria Fleseriu
- Department of MedicinePituitary Center, Cedars-Sinai Medical Center, Los Angeles, California, USANeuroendocrinology ClinicDepartment of Endocrinology and Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, MexicoDepartments of Medicine and Neurological Surgeryand Northwest Pituitary Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Road (BTE 472), Portland, Oregon 97239, USA
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