Endocrinology and Metabolism

Man Ho Choi

4 Articles

Adrenal Gland
Clinical and Technical Aspects in Free Cortisol Measurement: Man Ho Choi; Endocrinol Metab. 2022;37(4):599-607. Published online August 19, 2022; DOI: https://doi.org/10.3803/EnM.2022.1549

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Accurate measurement of cortisol is critical in adrenal insufficiency as it reduces the risk associated with misdiagnosis and supports the optimization of stress dose. Comprehensive assays have been developed to determine the levels of bioactive free cortisol and their clinical and analytical efficacies have been extensively discussed because the level of total cortisol is affected by changes in the structure or circulating levels of corticoid-binding globulin and albumin, which are the main reservoirs of cortisol in the human body. Antibody-based immunoassays are routinely used in clinical laboratories; however, the lack of molecular specificity in cortisol assessment limits their applicability to characterize adrenocortical function. Improved specificity and sensitivity can be achieved by mass spectrometry coupled with chromatographic separation methods, which is a cutting-edge technology to measure individual as well as a panel of steroids in a single analytical run. The purpose of this review is to introduce recent advances in free cortisol measurement from the perspectives of clinical specimens and issues associated with prospective analytical technologies.

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Corticotropin-stimulated steroid profiles to predict shock development and mortality in sepsis: From the HYPRESS study
Josef Briegel, Patrick Möhnle, Didier Keh, Johanna M. Lindner, Anna C. Vetter, Holger Bogatsch, Dorothea Lange, Sandra Frank, Ludwig C. Hinske, Djillali Annane, Michael Vogeser, Michael Bauer, Thorsten Brenner, Patrick Meybohm, Markus Weigand, Matthias Gr
Critical Care.2022;[Epub] CrossRef

Adrenal Gland
Adrenal Morphology as an Indicator of Long-Term Disease Control in Adults with Classic 21-Hydroxylase Deficiency: Taek Min Kim, Jung Hee Kim, Han Na Jang, Man Ho Choi, Jeong Yeon Cho, Sang Youn Kim; Endocrinol Metab. 2022;37(1):124-137. Published online February 8, 2022; DOI: https://doi.org/10.3803/EnM.2021.1278

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Background
Monitoring adults with classical 21-hydroxylase deficiency (21OHD) is challenging due to variation in clinical and laboratory settings. Moreover, guidelines for adrenal imaging in 21OHD are not yet available. We evaluated the relationship between adrenal morphology and disease control status in classical 21OHD.
Methods
This retrospective, cross-sectional study included 90 adult 21OHD patients and 270 age- and sex-matched healthy controls. We assessed adrenal volume, width, and tumor presence using abdominal computed tomography and evaluated correlations of adrenal volume and width with hormonal status. We investigated the diagnostic performance of adrenal volume and width for identifying well-controlled status in 21OHD patients (17α-hydroxyprogesterone [17-OHP] <10 ng/mL).
Results
The adrenal morphology of 21OHD patients showed hypertrophy (45.6%), normal size (42.2%), and hypotrophy (12.2%). Adrenal tumors were detected in 12 patients (13.3%). The adrenal volume and width of 21OHD patients were significantly larger than those of controls (18.2±12.2 mL vs. 7.1±2.0 mL, 4.7±1.9 mm vs. 3.3±0.5 mm, P<0.001 for both). The 17-OHP and androstenedione levels were highest in patients with adrenal hypertrophy, followed by those with normal adrenal glands and adrenal hypotrophy (P<0.05 for both). Adrenal volume and width correlated positively with adrenocorticotropic hormone, 17-OHP, 11β-hydroxytestosterone, progesterone sulfate, and dehydroepiandrosterone sulfate in both sexes (r=0.33–0.95, P<0.05 for all). For identifying well-controlled patients, the optimal cut-off values of adrenal volume and width were 10.7 mL and 4 mm, respectively (area under the curve, 0.82–0.88; P<0.001 for both).
Conclusion
Adrenal volume and width may be reliable quantitative parameters for monitoring patients with classical 21OHD.

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Long-Term Outcomes of Congenital Adrenal Hyperplasia
Anna Nordenström, Svetlana Lajic, Henrik Falhammar
Endocrinology and Metabolism.2022; 37(4): 587. CrossRef
Congenital adrenal hyperplasia in patients with adrenal tumors: a population-based case–control study
F. Sahlander, J. Patrova, B. Mannheimer, J. D. Lindh, H. Falhammar
Journal of Endocrinological Investigation.2022; 46(3): 559. CrossRef
Fully automatic volume measurement of the adrenal gland on CT using deep learning to classify adrenal hyperplasia
Taek Min Kim, Seung Jae Choi, Ji Yeon Ko, Sungwan Kim, Chang Wook Jeong, Jeong Yeon Cho, Sang Youn Kim, Young-Gon Kim
European Radiology.2022;[Epub] CrossRef

Adrenal Gland
Metabolic Subtyping of Adrenal Tumors: Prospective Multi-Center Cohort Study in Korea: Eu Jeong Ku, Chaelin Lee, Jaeyoon Shim, Sihoon Lee, Kyoung-Ah Kim, Sang Wan Kim, Yumie Rhee, Hyo-Jeong Kim, Jung Soo Lim, Choon Hee Chung, Sung Wan Chun, Soon-Jib Yoo, Ohk-Hyun Ryu, Ho Chan Cho, A Ram Hong, Chang Ho Ahn, Jung Hee Kim, Man Ho Choi; Endocrinol Metab. 2021;36(5):1131-1141. Published online October 21, 2021; DOI: https://doi.org/10.3803/EnM.2021.1149

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Background
Conventional diagnostic approaches for adrenal tumors require multi-step processes, including imaging studies and dynamic hormone tests. Therefore, this study aimed to discriminate adrenal tumors from a single blood sample based on the combination of liquid chromatography-mass spectrometry (LC-MS) and machine learning algorithms in serum profiling of adrenal steroids.
Methods
The LC-MS-based steroid profiling was applied to serum samples obtained from patients with nonfunctioning adenoma (NFA, n=73), Cushing’s syndrome (CS, n=30), and primary aldosteronism (PA, n=40) in a prospective multicenter study of adrenal disease. The decision tree (DT), random forest (RF), and extreme gradient boost (XGBoost) were performed to categorize the subtypes of adrenal tumors.
Results
The CS group showed higher serum levels of 11-deoxycortisol than the NFA group, and increased levels of tetrahydrocortisone (THE), 20α-dihydrocortisol, and 6β-hydroxycortisol were found in the PA group. However, the CS group showed lower levels of dehydroepiandrosterone (DHEA) and its sulfate derivative (DHEA-S) than both the NFA and PA groups. Patients with PA expressed higher serum 18-hydroxycortisol and DHEA but lower THE than NFA patients. The balanced accuracies of DT, RF, and XGBoost for classifying each type were 78%, 96%, and 97%, respectively. In receiver operating characteristics (ROC) analysis for CS, XGBoost, and RF showed a significantly greater diagnostic power than the DT. However, in ROC analysis for PA, only RF exhibited better diagnostic performance than DT.
Conclusion
The combination of LC-MS-based steroid profiling with machine learning algorithms could be a promising one-step diagnostic approach for the classification of adrenal tumor subtypes.

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Serum and hair steroid profiles in patients with nonfunctioning pituitary adenoma undergoing surgery: A prospective observational study
Seung Shin Park, Yong Hwy Kim, Ho Kang, Chang Ho Ahn, Dong Jun Byun, Man Ho Choi, Jung Hee Kim
The Journal of Steroid Biochemistry and Molecular Biology.2023; 230: 106276. CrossRef
Prevalence and Characteristics of Adrenal Tumors in an Unselected Screening Population
Ying Jing, Jinbo Hu, Rong Luo, Yun Mao, Zhixiao Luo, Mingjun Zhang, Jun Yang, Ying Song, Zhengping Feng, Zhihong Wang, Qingfeng Cheng, Linqiang Ma, Yi Yang, Li Zhong, Zhipeng Du, Yue Wang, Ting Luo, Wenwen He, Yue Sun, Fajin Lv, Qifu Li, Shumin Yang
Annals of Internal Medicine.2022; 175(10): 1383. CrossRef

Embryonic Development and Adult Regeneration of the Adrenal Gland: Ji-Hoon Kim, Man Ho Choi; Endocrinol Metab. 2020;35(4):765-773. Published online December 23, 2020; DOI: https://doi.org/10.3803/EnM.2020.403

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Abstract PDF PubReader ePub Crossref - TDM

The adrenal gland plays a pivotal role in an organism’s health span by controlling the endocrine system. Decades of research on the adrenal gland have provided multiscale insights into the development and maintenance of this essential organ. A particularly interesting finding is that founder stem/progenitor cells participate in adrenocortical development and enable the adult adrenal cortex to regenerate itself in response to hormonal stress and injury. Since major advances have been made in understanding the dynamics of the developmental process and the remarkable regenerative capacity of the adrenal gland, understanding the mechanisms underlying adrenal development, maintenance, and regeneration will be of interest to basic and clinical researchers. Here, we introduce the developmental processes of the adrenal gland and discuss current knowledge regarding stem/progenitor cells that regulate adrenal cortex remodeling and regeneration. This review will provide insights into the fascinating ongoing research on the development and regeneration of the adrenal cortex.

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Adrenal Dysfunction in Mitochondrial Diseases
Madeleine Corkery-Hayward, Louise A. Metherell
International Journal of Molecular Sciences.2023; 24(2): 1126. CrossRef
An Update on Genetics of Adrenal Gland and Associated Disorders
Chester Gauss, Dustin Rowland, Berrin Ergun-Longmire
Endocrines.2022; 3(2): 187. CrossRef
Immune dysfunction after spinal cord injury – A review of autonomic and neuroendocrine mechanisms
Kyleigh A. Rodgers, Kristina A. Kigerl, Jan M. Schwab, Phillip G. Popovich
Current Opinion in Pharmacology.2022; 64: 102230. CrossRef
Clinical and Technical Aspects in Free Cortisol Measurement
Man Ho Choi
Endocrinology and Metabolism.2022; 37(4): 599. CrossRef
Surrénalectomies
Isabelle Valin, Dan Rosenberg
Le Nouveau Praticien Vétérinaire canine & féline.2022; 19(82): 50. CrossRef
Adrenal medulla development and medullary-cortical interactions
Nicole Bechmann, Ilona Berger, Stefan R. Bornstein, Charlotte Steenblock
Molecular and Cellular Endocrinology.2021; 528: 111258. CrossRef
Theory: Treatments for Prolonged ICU Patients May Provide New Therapeutic Avenues for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)
Dominic Stanculescu, Lars Larsson, Jonas Bergquist
Frontiers in Medicine.2021;[Epub] CrossRef
Unravelling Polycystic Ovary Syndrome and Its Comorbidities
Kyung-Wook Kim
Journal of Obesity & Metabolic Syndrome.2021; 30(3): 209. CrossRef

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