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4 "Hong-Kyu Kim"
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Original Article
Mineral, Bone & Muscle
Carnitine Metabolite as a Potential Circulating Biomarker for Sarcopenia in Men
Je Hyun Seo, Jung-Min Koh, Han Jin Cho, Hanjun Kim, Young‑Sun Lee, Su Jung Kim, Pil Whan Yoon, Won Kim, Sung Jin Bae, Hong-Kyu Kim, Hyun Ju Yoo, Seung Hun Lee
Endocrinol Metab. 2025;40(1):93-102.   Published online November 28, 2024
DOI: https://doi.org/10.3803/EnM.2024.2117
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  • 72 Download
AbstractAbstract PDFSupplementary MaterialPubReader   ePub   
Background
Sarcopenia, a multifactorial disorder involving metabolic disturbance, suggests potential for metabolite biomarkers. Carnitine (CN), essential for skeletal muscle energy metabolism, may be a candidate biomarker. We investigated whether CN metabolites are biomarkers for sarcopenia.
Methods
Associations between the CN metabolites identified from an animal model of sarcopenia and muscle cells and sarcopenia status were evaluated in men from an age-matched discovery (72 cases, 72 controls) and a validation (21 cases, 47 controls) cohort.
Results
An association between CN metabolites and sarcopenia showed in mouse and cell studies. In the discovery cohort, plasma C5-CN levels were lower in sarcopenic men (P=0.005). C5-CN levels in men tended to be associated with handgrip strength (HGS) (P=0.098) and were significantly associated with skeletal muscle mass (P=0.003). Each standard deviation increase in C5-CN levels reduced the odds of low muscle mass (odd ratio, 0.61; 95% confidence interval [CI], 0.42 to 0.89). The area under the receiver operating characteristic curve (AUROC) of CN score using a regression equation of C5-CN levels, for sarcopenia was 0.635 (95% CI, 0.544 to 0.726). In the discovery cohort, addition of CN score to HGS significantly improved AUROC from 0.646 (95% CI, 0.575 to 0.717; HGS only) to 0.727 (95% CI, 0.643 to 0.810; P=0.006; HGS+CN score). The improvement was confirmed in the validation cohort (AUROC=0.563; 95% CI, 0.470 to 0.656 for HGS; and AUROC=0.712; 95% CI, 0.569 to 0.855 for HGS+CN score; P=0.027).
Conclusion
C5-CN, indicative of low muscle mass, is a potential circulating biomarker for sarcopenia in men. Further studies are required to confirm these results and explore sarcopenia-related metabolomic changes.
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Review Article
Miscellaneous
Quality Matters as Much as Quantity of Skeletal Muscle: Clinical Implications of Myosteatosis in Cardiometabolic Health
Hong-Kyu Kim, Chul-Hee Kim
Endocrinol Metab. 2021;36(6):1161-1174.   Published online December 28, 2021
DOI: https://doi.org/10.3803/EnM.2021.1348
  • 12,244 View
  • 454 Download
  • 44 Web of Science
  • 44 Crossref
AbstractAbstract PDFPubReader   ePub   
Although age-related changes in skeletal muscles are closely associated with decreases in muscle strength and functional decline, their associations with cardiometabolic diseases in the literature are inconsistent. Such inconsistency could be explained by the fact that muscle quality—which is closely associated with fatty infiltration of the muscle (i.e., myosteatosis)—is as important as muscle quantity in cardiometabolic health. However, muscle quality has been less explored compared with muscle mass. Moreover, the standard definition of myosteatosis and its assessment methods have not been established yet. Recently, some techniques using single axial computed tomography (CT) images have been introduced and utilized in many studies, as the mass and quality of abdominal muscles could be measured opportunistically on abdominal CT scans obtained during routine clinical care. Yet, the mechanisms by which myosteatosis affect metabolic and cardiovascular health remain largely unknown. In this review, we explore the recent advances in the assessment of myosteatosis and its changes associated with aging. We also review the recent literature on the clinical implication of myosteatosis by focusing on metabolic and cardiovascular diseases. Finally, we discuss the challenges and unanswered questions that need addressing to set myosteatosis as a therapeutic target for the prevention or treatment of cardiometabolic diseases.

Citations

Citations to this article as recorded by  
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    Alice Sabatino, Antonio C. Cordeiro, Carla M. Prado, Bengt Lindholm, Peter Stenvinkel, Carla Maria Avesani
    European Journal of Clinical Nutrition.2025;[Epub]     CrossRef
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    Journal of Cachexia, Sarcopenia and Muscle.2025;[Epub]     CrossRef
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    G. Geng, Z. Li, T. Yuan, G.-M. Quan
    Clinical Radiology.2025; 83: 106840.     CrossRef
  • Impact of Muscle Quality on Muscle Strength and Physical Performance Beyond Muscle Mass or Diabetes Status
    Jung A Kim, Chol Shin, Inha Jung, So Young Park, Da Young Lee, Ji Hee Yu, Hyunjoo Cho, Seung Ku Lee, Kyoung Jin Kim, Eyun Song, Kyeong Jin Kim, Nam Hoon Kim, Hye Jin Yoo, Sin Gon Kim, Kyung Mook Choi, Nan Hee Kim, Ji A Seo
    Journal of Cachexia, Sarcopenia and Muscle.2025;[Epub]     CrossRef
  • Relationship between myostatin, musclin, nutritional status, and functionality in older Colombian community-dwelling adults: a cross-sectional study
    Nancy Marulanda-Díaz, Alejandro Estrada-Restrepo, Andrés F. Milán, Raul Narvaez-Sanchez, Juan C. Calderón, Nubia A. Giraldo-Giraldo
    Nutrition.2025; 135: 112767.     CrossRef
  • Myosteatosis predicts the prognosis of patients with ST-elevation myocardial infarction who undergo emergency percutaneous coronary intervention
    Junqian Wang, Lingshan Zhou, Yuan Yang, Yiqing Wang, Yan Liang, Tong Wang, Jinkui Li, Ming Bai
    Frontiers in Endocrinology.2025;[Epub]     CrossRef
  • Association between visceral fat area to skeletal muscle mass ratio and hyperuricemia among non-elderly US adults
    Zhaoxiang Wang, Menghuan Wu, Qichao Yang
    Nutrition, Metabolism and Cardiovascular Diseases.2025; : 104106.     CrossRef
  • Age- and sex-specific reference values for CT-based low skeletal muscle quantity and quality in healthy living kidney donors
    David Martin, Paola Dolce, Martin Hübner, Tobias Zingg, David Fuks, Jean-Pierre Venetz, Damien Maier, Maurice Matter, Fabio Becce
    Frontiers in Physiology.2025;[Epub]     CrossRef
  • A CT-based Deep Learning Model for Predicting Subsequent Fracture Risk in Patients with Hip Fracture
    Yisak Kim, Young-Gon Kim, Jung-Wee Park, Byung Woo Kim, Youmin Shin, Sung Hye Kong, Jung Hee Kim, Young-Kyun Lee, Sang Wan Kim, Chan Soo Shin
    Radiology.2024;[Epub]     CrossRef
  • Myosteatosis is associated with poor survival after kidney transplantation: a large retrospective cohort validation
    Jie Chen, Yue Li, Chengjie Li, Turun Song
    Abdominal Radiology.2024; 49(4): 1210.     CrossRef
  • Fatty infiltration of gastrocnemius–soleus muscle complex: Considerations for myosteatosis rehabilitation
    Catherine Hatzantonis, Lalith Satkunam, Karyne N. Rabey, Jennifer C. Hocking, Anne M. R. Agur
    Journal of Anatomy.2024; 245(1): 50.     CrossRef
  • Muscle attenuation, not skeletal muscle index, is an independent prognostic factor for survival in gastric cancer patients with overweight and obesity
    Cheng-Le Zhuang, Hao-Fan Wu, Hao-Jie Jiang, Feng-Min Zhang, Han-Ping Shi, Zhen Yu, Xian Shen, Xiao-Lei Chen, Su-Lin Wang
    Nutrition.2024; 122: 112391.     CrossRef
  • Myosteatosis is associated with coronary artery calcification in patients with type 2 diabetes
    Fu-Peng Liu, Mu-Jie Guo, Qing Yang, Yan-Ying Li, Yan-Gang Wang, Mei Zhang
    World Journal of Diabetes.2024; 15(3): 429.     CrossRef
  • Unlocking liver health: Can tackling myosteatosis spark remission in metabolic dysfunction‐associated steatotic liver disease?
    Guillaume Henin, Audrey Loumaye, Louise Deldicque, Isabelle A. Leclercq, Nicolas Lanthier
    Liver International.2024; 44(8): 1781.     CrossRef
  • Skeletal muscle mass obtained by anthropometric equation and presence of sarcopenia in postmenopausal women
    Thaís Loureiro Felipe, Patrícia Paula da Fonseca Grili, Camila Vilarinho Vidigal, Ben-Hur Albergaria, Geise Ferreira da Cruz, José Luiz Marques-Rocha, Valdete Regina Guandalini
    Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics.2024;[Epub]     CrossRef
  • Skeletal Muscle Injury in Chronic Kidney Disease—From Histologic Changes to Molecular Mechanisms and to Novel Therapies
    Kylie Heitman, Matthew S. Alexander, Christian Faul
    International Journal of Molecular Sciences.2024; 25(10): 5117.     CrossRef
  • Myosteatosis and not low muscle mass is associated with lower survival in kidney transplant recipients
    Kristoffer N.D. Huitfeldt Sola, Helena M. Genberg, Carla M. Avesani, Torkel B. Brismar
    JCSM Communications.2024; 7(2): 91.     CrossRef
  • A Computed Tomography–Based Fracture Prediction Model With Images of Vertebral Bones and Muscles by Employing Deep Learning: Development and Validation Study
    Sung Hye Kong, Wonwoo Cho, Sung Bae Park, Jaegul Choo, Jung Hee Kim, Sang Wan Kim, Chan Soo Shin
    Journal of Medical Internet Research.2024; 26: e48535.     CrossRef
  • Association between atherogenic dyslipidemia and muscle quality defined by myosteatosis
    Hwi Seung Kim, Yun Kyung Cho, Myung Jin Kim, Eun Hee Kim, Min Jung Lee, Woo Je Lee, Hong-Kyu Kim, Chang Hee Jung
    Frontiers in Endocrinology.2024;[Epub]     CrossRef
  • The Correlation Between Visceral Fat Area to Skeletal Muscle Mass Ratio and Multiorgan Insulin Resistance in Chinese Population With Obesity
    Yanju Zhang, Meiyang Du, Zhouhuiling Li, Xincheng Wang, Mingxin Leng, Yaping Huang, Libin Li, Shi Zhang, Chunjun Li, Faustino R. Perez-Lopez
    International Journal of Endocrinology.2024;[Epub]     CrossRef
  • Comparative analysis of body composition using torso CT from PET/CT with bioelectrical impedance and muscle strength in healthy adults
    Dong Yun Lee, Jungsu S. Oh, Jeong Won Kim, Jae Seung Kim, Minyoung Oh, Yong-il Kim, Duk Han Ko, Sung-Jin Bae, Hong-Kyu Kim, Jin-Sook Ryu
    Scientific Reports.2024;[Epub]     CrossRef
  • Association of serum gamma-glutamyl transferase with myosteatosis assessed by muscle quality mapping using abdominal computed tomography
    Han Na Jung, Yun Kyung Cho, Hwi Seung Kim, Eun Hee Kim, Min Jung Lee, Joong-Yeol Park, Woo Je Lee, Hong-Kyu Kim, Chang Hee Jung
    Clinical Imaging.2023; 93: 4.     CrossRef
  • Increased visceral fat area to skeletal muscle mass ratio is positively associated with the risk of cardiometabolic diseases in a Chinese natural population: A cross‐sectional study
    Shi Zhang, Yaping Huang, Jing Li, Xincheng Wang, Xiaohe Wang, Minying Zhang, Yanju Zhang, Meiyang Du, Jingna Lin, Chunjun Li
    Diabetes/Metabolism Research and Reviews.2023;[Epub]     CrossRef
  • Association between hypertension and myosteatosis evaluated by abdominal computed tomography
    Han Na Jung, Yun Kyung Cho, Hwi Seung Kim, Eun Hee Kim, Min Jung Lee, Woo Je Lee, Hong-Kyu Kim, Chang Hee Jung
    Hypertension Research.2023; 46(4): 845.     CrossRef
  • Epidemiological, mechanistic, and practical bases for assessment of cardiorespiratory fitness and muscle status in adults in healthcare settings
    Jaime A. Gallo-Villegas, Juan C. Calderón
    European Journal of Applied Physiology.2023; 123(5): 945.     CrossRef
  • Muscle fat infiltration in chronic kidney disease: a marker related to muscle quality, muscle strength and sarcopenia
    Carla Maria Avesani, Aline Miroski de Abreu, Heitor S. Ribeiro, Torkel B. Brismar, Peter Stenvinkel, Alice Sabatino, Bengt Lindholm
    Journal of Nephrology.2023; 36(3): 895.     CrossRef
  • IDF2022-1139 Association Between Dyslipidemia And Myosteatosis Using Visual Muscular Quality Map In Computed Tomography
    H.S. Kim, H.N. Jung, Y.K. Cho, E.H. Kim, M.J. Lee, W.J. Lee, J.Y. Park, H.K. Kim, C.H. Jung
    Diabetes Research and Clinical Practice.2023; 197: 110467.     CrossRef
  • The role of skeletal muscle mass on cardiovascular disease risk: an emerging role on modulating lipid profile
    Evangelia Damigou, Matina Kouvari, Demosthenes Panagiotakos
    Current Opinion in Cardiology.2023; 38(4): 352.     CrossRef
  • Reference values for low muscle mass and myosteatosis using tomographic muscle measurements in living kidney donors
    Lisa B. Westenberg, Marcel Zorgdrager, Tim D. A. Swaab, Marco van Londen, Stephan J. L. Bakker, Henri G. D. Leuvenink, Alain R. Viddeleer, Robert A. Pol
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  • Association between sarcopenic obesity and poor muscle quality based on muscle quality map and abdominal computed tomography
    Yun Kyung Cho, Han Na Jung, Eun Hee Kim, Min Jung Lee, Joong‐Yeol Park, Woo Je Lee, Hong‐Kyu Kim, Chang Hee Jung
    Obesity.2023; 31(6): 1547.     CrossRef
  • Increase in skeletal muscular adiposity and cognitive decline in a biracial cohort of older men and women
    Caterina Rosano, Anne Newman, Adam Santanasto, Xiaonan Zhu, Bret Goodpaster, Iva Miljkovic
    Journal of the American Geriatrics Society.2023; 71(9): 2759.     CrossRef
  • Evaluation of Paraspinal Muscle Degeneration on Pain Relief after Percutaneous Epidural Adhesiolysis in Patients with Degenerative Lumbar Spinal Disease
    Misun Kang, Shin Hyung Kim, Minju Jo, Hyun Eom Jung, Jungbin Bae, Hee Jung Kim
    Medicina.2023; 59(6): 1118.     CrossRef
  • Sarcopenic obesity and its relation with muscle quality and mortality in patients on chronic hemodialysis
    Alice Sabatino, Carla Maria Avesani, Giuseppe Regolisti, Marianna Adinolfi, Giuseppe Benigno, Marco Delsante, Enrico Fiaccadori, Ilaria Gandolfini
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  • Association between computed tomography‐assessed sarcopenia and mortality in patients with anti‐neutrophil cytoplasmic antibody‐associated vasculitis
    Sung Soo Ahn, Yong‐Beom Park, Sang‐Won Lee
    International Journal of Rheumatic Diseases.2023; 26(9): 1704.     CrossRef
  • Association Between Insulin Resistance and Myosteatosis Measured by Abdominal Computed Tomography
    Myung Jin Kim, Yun Kyung Cho, Han Na Jung, Eun Hee Kim, Min Jung Lee, Chang Hee Jung, Joong-Yeol Park, Hong-Kyu Kim, Woo Je Lee
    The Journal of Clinical Endocrinology & Metabolism.2023; 108(12): 3100.     CrossRef
  • Association of Visceral Fat Obesity, Sarcopenia, and Myosteatosis with Non-Alcoholic Fatty Liver Disease without Obesity
    Hong-Kyu Kim, Sung-Jin Bae, Min Jung Lee, Eun Hee Kim, Hana Park, Hwi Seung Kim, Yun Kyung Cho, Chang Hee Jung, Woo Je Lee, Jaewon Choe
    Clinical and Molecular Hepatology.2023; 29(4): 987.     CrossRef
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    Bo Kyung Koo
    Journal of Obesity & Metabolic Syndrome.2022; 31(1): 9.     CrossRef
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    Hee Jung Kim, Miribi Rho, Kyung Bong Yoon, Minju Jo, Dong Woo Lee, Shin Hyung Kim
    Pain Practice.2022; 22(7): 621.     CrossRef
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    Marika Murawiak, Roma Krzymińska-Siemaszko, Aleksandra Kaluźniak-Szymanowska, Marta Lewandowicz, Sławomir Tobis, Katarzyna Wieczorowska-Tobis, Ewa Deskur-Śmielecka
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Original Articles
Diabetes, Obesity and Metabolism
Prognostic Value of Triglyceride and Glucose Index for Incident Type 2 Diabetes beyond Metabolic Health and Obesity
Hwi Seung Kim, Jiwoo Lee, Yun Kyung Cho, Eun Hee Kim, Min Jung Lee, Hong-Kyu Kim, Joong-Yeol Park, Woo Je Lee, Chang Hee Jung
Endocrinol Metab. 2021;36(5):1042-1054.   Published online October 21, 2021
DOI: https://doi.org/10.3803/EnM.2021.1184
  • 7,529 View
  • 151 Download
  • 3 Web of Science
  • 3 Crossref
AbstractAbstract PDFSupplementary MaterialPubReader   ePub   
Background
Metabolically healthy obese (MHO) phenotype is metabolically heterogeneous in terms of type 2 diabetes (T2D). Previously, the triglyceride and glucose (TyG) index has been considered for identifying metabolic health and future risk of T2D. This study aimed to evaluate the risk of incident T2D according to obesity status and metabolic health, categorized by four different criteria and the TyG index.
Methods
The study included 39,418 Koreans without T2D at baseline. The risk of T2D was evaluated based on four different definitions of metabolic health and obesity status and according to the baseline TyG index within each metabolic health and obesity group.
Results
During the median follow-up at 38.1 months, 726 individuals developed T2D. Compared with the metabolically healthy non-obese (MHNO) group with low TyG index, the MHO group with high TyG index showed increased risk of T2D in all four definitions of metabolic health with multivariate-adjusted hazard ratios of 2.57 (95% confidence interval [CI], 1.76 to 3.75), 3.72 (95% CI, 2.15 to 6.43), 4.13 (95% CI, 2.67 to 6.38), and 3.05 (95% CI, 2.24 to 4.15), when defined by Adult Treatment Panel III, Wildman, Karelis, and homeostasis model assessment (HOMA) criteria, respectively.
Conclusion
MHO subjects with high TyG index were at an increased risk of developing T2D compared with MHNO subjects, regardless of the definition of metabolic health. TyG index may serve as an additional factor for predicting the individual risk of incident T2D in MHO subjects.

Citations

Citations to this article as recorded by  
  • Association between triglyceride-glucose index and depression in patients with type 2 diabetes: A cross-sectional study from NHANES
    Jiaju Ren, Cheng Lv, Jia Wang
    Medicine.2024; 103(32): e39258.     CrossRef
  • Ling-gui-zhu-gan promotes adipocytes browning via targeting the miR-27b/PRDM16 pathway in 3T3-L1 cells
    Zimengwei Ye, Yi Zhao, Yanjing Cui, Bingrui Xu, Fan Wang, Dandan Zhao, Guangtong Dong, Zhufeng Wang, Rui Wu
    Frontiers in Pharmacology.2024;[Epub]     CrossRef
  • Insight into the Predictive Power of Surrogate Diagnostic Indices for Identifying Individuals with Metabolic Syndrome
    Shaghayegh Hosseinkhani, Katayoon Forouzanfar, Nastaran Hadizadeh, Farideh Razi, Somayeh Darzi, Fatemeh Bandarian
    Endocrine, Metabolic & Immune Disorders - Drug Targets.2024; 24(11): 1291.     CrossRef
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Clinical Study
Gender-Dependent Reference Range of Serum Calcitonin Levels in Healthy Korean Adults
Eyun Song, Min Ji Jeon, Hye Jin Yoo, Sung Jin Bae, Tae Yong Kim, Won Bae Kim, Young Kee Shong, Hong-Kyu Kim, Won Gu Kim
Endocrinol Metab. 2021;36(2):365-373.   Published online April 7, 2021
DOI: https://doi.org/10.3803/EnM.2020.939
  • 7,119 View
  • 168 Download
  • 5 Web of Science
  • 6 Crossref
AbstractAbstract PDFSupplementary MaterialPubReader   ePub   
Background
Serum calcitonin measurement contains various clinical and methodological aspects. Its reference level is wide and unclear despite sensitive calcitonin kits are available. This study aimed to identify the specific reference range in the healthy Korean adults.
Methods
Subjects were ≥20 years with available calcitonin (measured by a two-site immunoradiometric assay) data by a routine health checkup. Three groups were defined as all eligible subjects (group 1, n=10,566); subjects without self or family history of thyroid disease (group 2, n=5,152); and subjects without chronic kidney disease, autoimmune thyroid disease, medication of proton pump inhibitor/H2 blocker/steroid, or other malignancies (group 3, n=4,638).
Results
This study included 6,341 male and 4,225 female subjects. Males had higher mean calcitonin than females (2.3 pg/mL vs. 1.9 pg/mL, P<0.001) in group 1. This gender difference remained similar in groups 2 and 3. Calcitonin according to age or body mass index was not significant in both genders. Higher calcitonin in smoking than nonsmoking men was observed but not in women. Sixty-nine subjects had calcitonin higher than the upper reference limit (10 pg/mL) and 64 of them had factors associated with hypercalcitoninemia besides medullary thyroid cancer. Our study suggests the reference intervals for men who were non, ex-, current smokers, and women (irrespective of smoking status) as <5.7, <7.1, <7.9, and <3.6 pg/mL, respectively.
Conclusion
Specific calcitonin reference range should be provided considering for sex and smoking status. Taking account for several factors known to induce hypercalcitoninemia can help interpret the gray zone of moderately elevated calcitonin.

Citations

Citations to this article as recorded by  
  • Determinants of circulating calcitonin value: analysis of thyroid features, demographic data, anthropometric characteristics, comorbidities, medications, and smoking habits in a population with histological full exclusion of medullary thyroid carcinoma
    Pierpaolo Trimboli, Giuseppe Peloni, Dorotea Confalonieri, Elena Gamarra, Tommaso Piticchio, Francesco Frasca, Petra Makovac, Arnoldo Piccardo, Lorenzo Ruinelli
    Frontiers in Oncology.2024;[Epub]     CrossRef
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    Katarina Tausanović, Marina Stojanović, Milan Jovanović, Boban Stepanović, Jovan Ilić, Sara Ivaniš, Vladan Živaljević
    Medicinska istrazivanja.2024; 57(1): 121.     CrossRef
  • Impact of dietary, lifestyle and sociodemographic factors on calcitonin levels in a healthy population
    Ivana Gunjača, Mirjana Babić Leko, Nikolina Pleić, Ante Jurić, Dubravka Brdar, Vesela Torlak, Marko Vuletić, Ante Punda, Ozren Polašek, Caroline Hayward, Tatijana Zemunik
    Bone.2024; 187: 117214.     CrossRef
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    Hosam M. Ahmad, Zaki M. Zaki, Asmaa S. Mohamed, Amr E. Ahmed
    BMC Research Notes.2023;[Epub]     CrossRef
  • Presence or severity of Hashimoto’s thyroiditis does not influence basal calcitonin levels: observations from CROHT biobank
    M. Cvek, A. Punda, M. Brekalo, M. Plosnić, A. Barić, D. Kaličanin, L. Brčić, M. Vuletić, I. Gunjača, V. Torlak Lovrić, V. Škrabić, V. Boraska Perica
    Journal of Endocrinological Investigation.2022; 45(3): 597.     CrossRef
  • Environmental Factors That Affect Parathyroid Hormone and Calcitonin Levels
    Mirjana Babić Leko, Nikolina Pleić, Ivana Gunjača, Tatijana Zemunik
    International Journal of Molecular Sciences.2021; 23(1): 44.     CrossRef
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