Endocrinology and Metabolism

Hee-Won Jung

2 Articles

Calcium & Bone Metabolism
Decreased Serum Level of Sclerostin in Older Adults with Sarcopenia: Seong Hee Ahn, Hee-Won Jung, Eunju Lee, Ji Yeon Baek, Il-Young Jang, So Jeong Park, Jin Young Lee, Eunah Choi, Yun Sun Lee, Seongbin Hong, Beom-Jun Kim; Endocrinol Metab. 2022;37(3):487-496. Published online May 27, 2022; DOI: https://doi.org/10.3803/EnM.2022.1428

1,620 View
103 Download
2 Citations

Abstract PDF PubReader ePub Crossref - TDM

Background
Although muscles and bones interact with each other through various secretory factors, the role of sclerostin, an osteocyte-secreted factor, on muscle metabolism has not been well studied. We investigated the levels of serum sclerostin in Korean older adults with sarcopenia.
Methods
Blood samples were collected from 129 participants who underwent evaluation of muscle mass and function in an outpatient geriatric clinic of a teaching hospital. Sarcopenia and related parameters were determined using cutoff values for the Asian population. Serum sclerostin levels were measured using an enzyme-linked immunosorbent assay.
Results
The mean age of the participants was 69.6 years, and 20 participants (15.5%) were classified as having sarcopenia. After adjusting for age, sex, and body mass index, serum sclerostin levels were significantly lower in participants with sarcopenia, low muscle mass, or weak muscle strength (P=0.003 to 0.045). Serum sclerostin levels were positively associated with skeletal muscle index and grip strength after adjusting for confounders (P=0.001 and P=0.003), whereas sarcopenic phenotype score showed a negative association (P=0.006). These increases in muscle mass and strength were also dose dependent as serum sclerostin levels increased (P for trends=0.003 and P for trends=0.015). Higher serum sclerostin levels were associated with lower odds ratio (ORs) for sarcopenia, low muscle mass, and weak muscle strength after adjusting for confounders (OR, 0.27 to 0.50; P<0.001 to 0.025).
Conclusion
Higher serum sclerostin levels were associated with a lower risk of sarcopenia, low muscle mass, and weak muscle strength in Korean older adults.

Citations

Citations to this article as recorded by

Sclerostin as a Putative Myokine in Sarcopenia
Hyon-Seung Yi
Endocrinology and Metabolism.2022; 37(3): 430. CrossRef
Organokines, Sarcopenia, and Metabolic Repercussions: The Vicious Cycle and the Interplay with Exercise
Giulia Minniti, Letícia Maria Pescinini-Salzedas, Guilherme Almeida dos Santos Minniti, Lucas Fornari Laurindo, Sandra Maria Barbalho, Renata Vargas Sinatora, Lance Alan Sloan, Rafael Santos de Argollo Haber, Adriano Cressoni Araújo, Karina Quesada, Jesse
International Journal of Molecular Sciences.2022; 23(21): 13452. CrossRef

Endocrine Research
Effect of CCL11 on In Vitro Myogenesis and Its Clinical Relevance for Sarcopenia in Older Adults: Da Ae Kim, So Jeong Park, Jin Young Lee, Jeoung Hee Kim, Seungjoo Lee, Eunju Lee, Il-Young Jang, Hee-Won Jung, Jin Hoon Park, Beom-Jun Kim; Endocrinol Metab. 2021;36(2):455-465. Published online April 14, 2021; DOI: https://doi.org/10.3803/EnM.2020.942

3,345 View
124 Download
2 Citations

Abstract PDF Supplementary Material PubReader ePub Crossref - TDM

Background
The C-C motif chemokine ligand 11 (CCL11) has been receiving attention as a potential pro-aging factor. Accordingly, it may be involved in muscle metabolism and sarcopenia, a key component of aging phenotypes. To clarify this potential, we investigated the effects of CCL11 on in vitro muscle biology and its clinical relevance for sarcopenia parameters in older adults.
Methods
Myogenesis was induced in mouse C2C12 myoblasts with 2% horse serum. Human blood samples were collected from 79 participants who underwent a functional assessment. Thereafter, CCL11 level was measured using a quantikine ELISA kit. Sarcopenia was defined using the Asian-specific guideline.
Results
Recombinant CCL11 treatment significantly stimulated myogenesis in a dose-dependent manner, and consistently increased the expression of myogenic differentiation markers. Among the C-C chemokine receptors (CCRs), CCR5, not CCR2 and CCR3, was predominantly expressed in muscle cells. Further, the CCR5 inhibitor blocked recombinant CCL11-stimulated myogenesis. In a clinical study, serum CCL11 level was not significantly different according to the status of sarcopenia, low muscle mass, weak muscle strength, and poor physical performance, and was not associated with skeletal muscle index, grip strength, short physical performance battery score, gait speed, and time to complete 5 chair stands, after adjusting for sex, age, and body mass index.
Conclusion
Contrary to expectations, CCL11 exerted beneficial effects on muscle metabolism at least in vitro system. However, its impact on human muscle health was not evident, suggesting that circulating CCL11 may not be a useful biomarker for sarcopenia risk assessment in older adults.

Citations

Citations to this article as recorded by

Lumican Inhibits Osteoclastogenesis and Bone Resorption by Suppressing Akt Activity
Jin-Young Lee, Da-Ae Kim, Eun-Young Kim, Eun-Ju Chang, So-Jeong Park, Beom-Jun Kim
International Journal of Molecular Sciences.2021; 22(9): 4717. CrossRef
Aldosterone Inhibits In Vitro Myogenesis by Increasing Intracellular Oxidative Stress via Mineralocorticoid Receptor
Jin Young Lee, Da Ae Kim, Eunah Choi, Yun Sun Lee, So Jeong Park, Beom-Jun Kim
Endocrinology and Metabolism.2021; 36(4): 865. CrossRef

Author index