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Ahn CH, Lee YB, Kim JH, Oh YL, Kim JH, Jung KC. Correlation of Histopathologic Subtypes of Primary Aldosteronism with Clinical Phenotypes and Postsurgical Outcomes. J Clin Endocrinol Metab 2023:dgad747. [PMID: 38127970 DOI: 10.1210/clinem/dgad747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/28/2023] [Accepted: 12/18/2023] [Indexed: 12/23/2023]
Abstract
CONTEXT Clinical implications of unilateral primary aldosteronism (PA) histopathology remain to be determined in various ethnic populations. OBJECTIVE We examined the histopathology of unilateral PA using CYP11B2 immunostaining in relation to clinical phenotypes and postsurgical outcomes. METHODS Patients consecutively operated for unilateral PA from 2010 to 2020 at three tertiary hospitals in South Korea were retrospectively enrolled. Adrenals with solitary aldosterone-producing adenomas and/or dominant aldosterone-producing nodules were classified as the classical and the others as the nonclassical groups. The classical group was subdivided into mixed or solitary group according to whether other aldosterone-producing lesions coexist or not. RESULTS Of the 240 cases, 124 were solitary, 86 mixed, and 30 nonclassical. Baseline serum potassium concentration was lower in the solitary group than the mixed or nonclassical group. Plasma aldosterone concentration after saline loading was the highest in the solitary group (median 31.65 ng/dl), followed by the mixed group (median 25.40 ng/dl), and the lowest in the nonclassical group (median 14.20 ng/dl). Solitary and mixed groups showed higher lateralization indices and lower contralateral indices than the nonclassical group. The contralateral index was lower in the solitary group than the mixed group. At 6-12 months after adrenalectomy, fewer antihypertensive medications were required for the solitary and mixed groups than the nonclassical group. CONCLUSIONS The solitary group, followed by the mixed group, was associated with more severe hyperaldosteronism and more suppressed aldosterone production from the contralateral side than the nonclassical group. Histopathologic phenotypes were related to the clinical manifestations and may suggest postoperative prognosis.
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Affiliation(s)
- Chang Ho Ahn
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - You-Bin Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae Hyeon Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Young Lyun Oh
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jung Hee Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyeong Cheon Jung
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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Yamazaki Y, Omata K, Tezuka Y, Ono Y, Morimoto R, Adachi Y, Ise K, Nakamura Y, Gomez-Sanchez CE, Shibahara Y, Kitamoto T, Nishikawa T, Ito S, Satoh F, Sasano H. Tumor Cell Subtypes Based on the Intracellular Hormonal Activity in KCNJ5-Mutated Aldosterone-Producing Adenoma. Hypertension 2019; 72:632-640. [PMID: 30354756 DOI: 10.1161/hypertensionaha.118.10907] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aldosterone-producing adenomas (APAs) harbor marked intratumoral heterogeneity in terms of morphology, steroidogenesis, and genetics. However, an association of biological significance of morphologically identified tumor cell subtypes and genotypes is virtually unknown. KCNJ5 mutation is most frequently detected and generally considered a curable phenotype by adrenalectomy. Therefore, to explore the biological significance of KCNJ5 mutation in APA based on intracellular hormonal activities, 35 consecutively selected APAs (n=18; KCNJ5 mutated, n=17; wild type) were quantitatively examined in the whole tumor areas by newly developed digital image analysis incorporating their histological and ultrastructural features (14 cells from 2 KCNJ5-mutated APAs and 15 cells from 1 wild type) and CYP11B2 immunoreactivity. Results demonstrated that KCNJ5-mutated APAs had significantly lower nuclear/cytoplasm ratio and more abundant clear cells than wild type. CYP11B2 immunoreactivity was not significantly different between these genotypes, but a significant correlation was detected between the proportion of clear cells and CYP11B2 immunoreactivity in all of the APAs examined. CYP11B2 was predominantly immunolocalized in clear cells in KCNJ5-mutated APAs. Quantitative ultrastructural analysis revealed that KCNJ5-mutated APAs had significantly more abundant and smaller-sized mitochondria with well-developed cristae than wild type, whereas wild type had more abundant lipid droplets per unit area despite the small number of the cases examined. Our results did provide the novel insights into the morphological features of APA based on their biological significance. KCNJ5-mutated APAs were characterized by predominance of enlarged lipid-rich clear cells possibly resulting in increased neoplastic aldosterone biosynthesis.
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Affiliation(s)
- Yuto Yamazaki
- From the Department of Pathology (Y.Y., K.I., Y.N., H.S.)
| | - Kei Omata
- Division of Clinical Hypertension, Endocrinology and Metabolism (K.O., Y.T., F.S.), Tohoku University Graduate School of Medicine, Sendai, Japan.,Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.).,Department of Pathology, University of Michigan Medical School, Ann Arbor (K.O.)
| | - Yuta Tezuka
- Division of Clinical Hypertension, Endocrinology and Metabolism (K.O., Y.T., F.S.), Tohoku University Graduate School of Medicine, Sendai, Japan.,Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.)
| | - Yoshikiyo Ono
- Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.).,Division of Metabolism, Endocrinology and Diabetes, Department of Internal Medicine, University of Michigan, Ann Arbor (Y.O.)
| | - Ryo Morimoto
- Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.)
| | - Yuzu Adachi
- Department of Pathology (Y.A.), Tohoku University Hospital, Sendai, Japan
| | - Kazue Ise
- From the Department of Pathology (Y.Y., K.I., Y.N., H.S.).,Division of Pathology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan (K.I., Y.N.)
| | - Yasuhiro Nakamura
- From the Department of Pathology (Y.Y., K.I., Y.N., H.S.).,Division of Pathology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan (K.I., Y.N.)
| | - Celso E Gomez-Sanchez
- Division of Endocrinology, Department of Medicine, The University of Mississippi Medical Center, Jackson (C.E.G.-S.).,Research and Medicine Services, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S.)
| | | | - Takumi Kitamoto
- Endocrinology and Diabetes Center (T.K., T.N.), Yokohama Rosai Hospital, Japan.,Division of Endocrinology, Department of Medicine, Columbia University, New York, NY (T.K.)
| | - Tetsuo Nishikawa
- Endocrinology and Diabetes Center (T.K., T.N.), Yokohama Rosai Hospital, Japan
| | - Sadayoshi Ito
- Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.)
| | - Fumitoshi Satoh
- Division of Clinical Hypertension, Endocrinology and Metabolism (K.O., Y.T., F.S.), Tohoku University Graduate School of Medicine, Sendai, Japan.,Division of Nephrology, Endocrinology, and Vascular Medicine (K.O., Y.T., Y.O., R.M., S.I., F.S.)
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Abstract
BACKGROUND Both aging and inappropriate secretion of aldosterone increase the risk for developing cardiovascular disease; however, the influence of aging on aldosterone secretion and physiology is not well understood. METHODS The relationship between age and adrenal aldosterone synthase (CYP11B2) expression was evaluated in 127 normal adrenal glands from deceased kidney donors (age, 9 months to 68 years). Following immunohistochemistry, CYP11B2-expressing area and areas of abnormal foci of CYP11B2-expressing cells, called aldosterone-producing cell clusters, were analyzed. In a separate ancillary clinical study of 677 participants without primary aldosteronism, who were studied on both high and restricted sodium diets (age, 18-71 years), we used multivariable linear regression to assess the independent associations between age and renin-angiotensin-aldosterone system physiology. RESULTS In adrenal tissue, the total CYP11B2-expressing area was negatively correlated with age (r=-0.431, P<0.0001), whereas the total aldosterone-producing cell cluster area was positively correlated with age (r=0.390, P<0.0001). The integrated ratio of aldosterone-producing cell cluster to CYP11B2-expressing area was most strongly and positively correlated with age (r=0.587, P<0.0001). When participants in the clinical study were maintained on a high sodium balance, renin activity progressively declined with older age, whereas serum and urinary aldosterone did not significantly decline. Correspondingly, the aldosterone-to-renin ratio was positively and independently associated with older age (adjusted β=+5.54 ng/dL per ng/mL per hour per 10 years, P<0.001). In contrast, when participants were assessed under sodium-restricted conditions, physiological stimulation of aldosterone was blunted with older age (β=-4.6 ng/dL per 10 years, P<0.0001). CONCLUSIONS Aging is associated with a pattern of decreased normal zona glomerulosa CYP11B2 expression and increased aldosterone-producing cell cluster expression. This histopathologic finding parallels an age-related autonomous aldosteronism and abnormal aldosterone physiology that provides 1 potential explanation for age-related cardiovascular risk.
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Affiliation(s)
- Kazutaka Nanba
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.)
| | - Anand Vaidya
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.)
| | - Gordon H Williams
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.)
| | - Isabel Zheng
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.)
| | - Tobias Else
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.)
| | - William E Rainey
- From Departments of Molecular and Integrative Physiology & Internal Medicine, University of Michigan, Ann Arbor (K.N., I.Z., W.E.R.); Center for Adrenal Disorders, Division of Endocrinology, Diabetes, and Hypertension, Brigham and Women's Hospital and Harvard Medical School, Boston, MA (A.V., G.H.W.); and Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor (T.E., W.E.R.).
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