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대한내분비학회> Endocrinology and Metabolism(구 대한내분비학회지)> Exercise/Resistance Training and Muscle Stem Cells

KCI등재SCISCOUPUS

Exercise/Resistance Training and Muscle Stem Cells

So-ichiro Fukada , Ayasa Nakamura
  • : 대한내분비학회
  • : Endocrinology and Metabolism(구 대한내분비학회지) 36권4호
  • : 연속간행물
  • : 2021년 08월
  • : 737-744(8pages)
Endocrinology and Metabolism(구 대한내분비학회지)

DOI


목차

INTRODUCTION
MUSCLE STEM CELLS
CRITICAL ROLES OF MYONUCLEI NUMBER FOR SIZE OF MYOFIBERS
CONCLUSIONS
CONFLICTS OF INTEREST
ACKNOWLEDGMENTS
ORCID
REFERENCES

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초록 보기

Skeletal muscle has attracted attention as endocrine organ, because exercise-dependent cytokines called myokines/exerkines are released from skeletal muscle and are involved in systemic functions. While, local mechanical loading to skeletal muscle by exercise or resistance training alters myofiber type and size and myonuclear number. Skeletal muscle-resident stem cells, known as muscle satellite cells (MuSCs), are responsible for the increased number of myonuclei. Under steady conditions, MuSCs are maintained in a mitotically quiescent state but exit from that state and start to proliferate in response to high physical activity. Alterations in MuSC behavior occur when myofibers are damaged, but the lethal damage to myofibers does not seem to evoke mechanical loading-dependent MuSC activation and proliferation. Given that MuSCs proliferate without damage, it is unclear how the different behaviors of MuSCs are controlled by different physical activities. Recent studies demonstrated that myonuclear number reflects the size of myofibers; hence, it is crucial to know the properties of MuSCs and the mechanism of myonuclear accretion by MuSCs. In addition, the elucidation of mechanical load-dependent changes in muscle resident cells, including MuSCs, will be necessary for the discovery of new myokines/exerkines and understating skeletal muscle diseases.

UCI(KEPA)

간행물정보

  • : 의약학분야  > 내과학
  • : KCI등재
  • : SCI,SCOPUS
  • : 격월
  • : 2093-596X
  • : 2093-5978
  • : 학술지
  • : 연속간행물
  • : 1986-2021
  • : 2532


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KCI등재 SCI SCOPUS

1The Role of Thyroid Hormone in the Regulation of Cerebellar Development

저자 : Sumiyasu Ishii , Izuki Amano , Noriyuki Koibuchi

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 703-716 (14 pages)

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The proper organized expression of specific genes in time and space is responsible for the organogenesis of the central nervous system including the cerebellum. The epigenetic regulation of gene expression is tightly regulated by an intrinsic intracellular genetic program, local stimuli such as synaptic inputs and trophic factors, and peripheral stimuli from outside of the brain including hormones. Some hormone receptors are expressed in the cerebellum. Thyroid hormones (THs), among numerous circulating hormones, are well-known major regulators of cerebellar development. In both rodents and human, hypothyroidism during the postnatal developmental period results in abnormal morphogenesis or altered function. THs bind to the thyroid hormone receptors (TRs) in the nuclei and with the help of transcriptional cofactors regulate the transcription of target genes. Gene regulation by TR induces cell proliferation, migration, and differentiation, which are necessary for brain development and plasticity. Thus, the lack of TH action mediators may directly cause aberrant cerebellar development. Various kinds of animal models have been established in a bid to study the mechanism of TH action in the cerebellum. Interestingly, the phenotypes differ greatly depending on the models. Herein we summarize the actions of TH and TR particularly in the developing cerebellum.

KCI등재 SCI SCOPUS

2Active Surveillance as an Effective Management Option for Low-Risk Papillary Thyroid Microcarcinoma

저자 : Min Ji Jeon , Won Gu Kim , Tae Yong Kim , Young Kee Shong , Won Bae Kim

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 717-724 (8 pages)

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Active surveillance (AS) for low-risk papillary thyroid microcarcinoma (PTMC) has been accepted worldwide as safe and effective. Despite the growing acceptance of AS in the management of low-risk PTMCs, there are barriers to AS in real clinical settings, and it is important to understand and establish appropriate AS protocol from initial evaluation to follow-up. PTMC management strategies should be decided upon after careful consideration of patient and tumor characteristics by a multidisciplinary team of thyroid cancer specialists. Patients should understand the risks and benefits of AS, participate in decision-making and follow structured monitoring strategies. In this review, we discuss clinical outcomes of AS from previous studies, optimal indications and follow-up strategies for AS, and unresolved questions about AS.

KCI등재 SCI SCOPUS

3The Concept of Economic Evaluation and Its Application in Thyroid Cancer Research

저자 : Kyungsik Kim , Mijin Kim , Woojin Lim , Bo Hyun Kim , Sue K. Park

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 725-736 (12 pages)

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Economic evaluation is a type of comparative analysis between interventions in terms of both their resource use and health outcomes. Due to the good prognosis of thyroid cancer (TC), the socioeconomic burden of TC patients post-diagnosis is increasing. Therefore, economic evaluation studies focusing on TC are recommended. This study aimed to describe the concept and methods of economic evaluation and reviewed previous TC studies. Several previous studies compared the costs of interventions or evaluated recurrence, complications, or quality of life as measures of their effectiveness. Regarding costs, most studies focused on direct costs and applied hypothetical models. Cost-minimization analysis should be distinguished from simple cost analysis. Furthermore, due to the universality of the term “cost-effectiveness analysis” (CEA), several studies have not distinguished CEA from cost-utility analysis; this point needs to be considered in future research. Cost-benefit analyses have not been conducted in previous TC research. Since TC has a high survival rate and good prognosis, the need for economic evaluations has recently been pointed out. Therefore, correct concepts and methods are needed to obtain clear economic evaluation results. On this basis, it will be possible to provide appropriate guidelines for TC treatment and management in the future.

KCI등재 SCI SCOPUS

4Exercise/Resistance Training and Muscle Stem Cells

저자 : So-ichiro Fukada , Ayasa Nakamura

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 737-744 (8 pages)

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Skeletal muscle has attracted attention as endocrine organ, because exercise-dependent cytokines called myokines/exerkines are released from skeletal muscle and are involved in systemic functions. While, local mechanical loading to skeletal muscle by exercise or resistance training alters myofiber type and size and myonuclear number. Skeletal muscle-resident stem cells, known as muscle satellite cells (MuSCs), are responsible for the increased number of myonuclei. Under steady conditions, MuSCs are maintained in a mitotically quiescent state but exit from that state and start to proliferate in response to high physical activity. Alterations in MuSC behavior occur when myofibers are damaged, but the lethal damage to myofibers does not seem to evoke mechanical loading-dependent MuSC activation and proliferation. Given that MuSCs proliferate without damage, it is unclear how the different behaviors of MuSCs are controlled by different physical activities. Recent studies demonstrated that myonuclear number reflects the size of myofibers; hence, it is crucial to know the properties of MuSCs and the mechanism of myonuclear accretion by MuSCs. In addition, the elucidation of mechanical load-dependent changes in muscle resident cells, including MuSCs, will be necessary for the discovery of new myokines/exerkines and understating skeletal muscle diseases.

KCI등재 SCI SCOPUS

5Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones

저자 : Bo Hye Kim , Yena Joo , Min-seon Kim , Han Kyoung Choe , Qingchun Tong , Obin Kwon

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 745-756 (12 pages)

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Intermittent fasting has become an increasingly popular strategy in losing weight and associated reduction in obesity-related medical complications. Overwhelming studies support metabolic improvements from intermittent fasting in blood glucose levels, cardiac and brain function, and other health benefits, in addition to weight loss. However, concerns have also been raised on side effects including muscle loss, ketosis, and electrolyte imbalance. Of particular concern, the effect of intermittent fasting on hormonal circadian rhythms has received little attention. Given the known importance of circadian hormonal changes to normal physiology, potential detrimental effects by dysregulation of hormonal changes deserve careful discussions. In this review, we describe the changes in circadian rhythms of hormones caused by intermittent fasting. We covered major hormones commonly pathophysiologically involved in clinical endocrinology, including insulin, thyroid hormones, and glucocorticoids. Given that intermittent fasting could alter both the level and frequency of hormone secretion, decisions on practicing intermittent fasting should take more considerations on potential detrimental consequences versus beneficial effects pertaining to individual health conditions.

KCI등재 SCI SCOPUS

6COVID-19 Vaccination for Endocrine Patients: A Position Statement from the Korean Endocrine Society

저자 : Cheol Ryong Ku , Kyong Yeun Jung , Chang Ho Ahn , Jun Sung Moon , Ju Hee Lee , Eun Heui Kim , Hyemi Kwon , Hee Kyung Kim , Sunghwan Suh , Sangmo Hong , Jeonghoon Ha , Eun Roh , Jin Hwa Kim , Mi-kyung Ki

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 757-765 (9 pages)

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Since the first outbreak of coronavirus disease 2019 (COVID-19), ongoing efforts have been made to discover an efficacious vaccine against COVID-19 to combat the pandemic. In most countries, both mRNA and DNA vaccines have been administered, and their side effects have also been reported. The clinical course of COVID-19 and the effects of vaccination against COVID-19 are both influenced by patients' health status and involve a systemic physiological response. In view of the systemic function of endocrine hormones, endocrine disorders themselves and the therapeutics used to treat them can influence the outcomes of vaccination for COVID-19. However, there are very limited data to support the development of clinical guidelines for patients with specific medical backgrounds based on large clinical trials. In the current severe circumstances of the COVID-19 pandemic, position statements made by clinical specialists are essential to provide appropriate recommendations based on both medical evidence and clinical experiences. As endocrinologists, we would like to present the medical background of COVID-19 vaccination, as well as precautions to prevent the side effects of COVID-19 vaccination in patients with specific endocrine disorders, including adrenal insufficiency, diabetes mellitus, osteoporosis, autoimmune thyroid disease, hypogonadism, and pituitary disorders.

KCI등재 SCI SCOPUS

7Higher Weight Variability Could Bring You a Fatty Liver

저자 : Yeoree Yang , Jae-hyoung Cho

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 766-768 (3 pages)

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KCI등재 SCI SCOPUS

8Thyroid Hormone Profile and Its Prognostic Impact on the Coronavirus Disease 2019 in Korean Patients

저자 : Jiyeon Ahn , Min Kyung Lee , Jae Hyuk Lee , Seo Young Sohn

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 769-777 (9 pages)

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Background: Data on the association between coronavirus disease 2019 (COVID-19) and thyroid have been reported, including overt thyrotoxicosis and suppression of thyroid function. We aimed to evaluate the thyroid hormone profile and its association with the prognosis of COVID-19 in Korean patients.
Methods: The clinical data of 119 patients with COVID-19, admitted in the Myongji Hospital, Goyang, South Korea, were retrospectively evaluated. The thyroid hormone profiles were analyzed and compared based on disease severity (non-severe disease vs. severe to critical disease). Clinical outcomes were analyzed according to the tertiles of thyroid hormones.
Results: Of the 119 patients, 76 (63.9%) were euthyroid, and none presented with overt thyroid dysfunction. Non-thyroidal illness syndrome was the most common manifestation (18.5%), followed by subclinical thyrotoxicosis (14.3%) among patients with thyroid dysfunction. Thyroid stimulating hormone (TSH) and triiodothyronine (T3) levels were significantly lower in patients with severe to critical disease than in those with non-severe disease (P<0.05). Patients in the lowest T3 tertile (< 0.77 ng/mL) had higher rates of mechanical ventilation, intensive care unit admission, and death than those in the middle and highest ( >1.00 ng/mL) T3 tertiles (P<0.05). COVID-19 patients in the lowest T3 tertile were independently associated with mortality (hazard ratio, 5.27; 95% confidence interval, 1.09 to 25.32; P=0.038) compared with those in the highest T3 tertile.
Conclusion: Thyroid dysfunction is common in COVID-19 patients. Changes in serum TSH and T3 levels may be important markers of disease severity in COVID-19. Decreased T3 levels may have a prognostic significance in COVID-19 related outcome.

KCI등재 SCI SCOPUS

9The Positive Association between Subclinical Hypothyroidism and Newly-Diagnosed Hypertension Is More Explicit in Female Individuals Younger than 65

저자 : Xichang Wang , Haoyu Wang , Li Yan , Lihui Yang , Yuanming Xue , Jing Yang , Yongli Yao , Xulei Tang , Nanwei Tong , Guixia Wang , Jinan Zhang , Youmin Wang , Jianming Ba , Bing Chen , Jianling Du

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 778-789 (12 pages)

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Background: Subclinical hypothyroidism (SCH) is the most common thyroid dysfunction, and its relationship with blood pressure (BP) has been controversial. The aim of the study was to analyze the association between SCH and newly-diagnosed hypertension.
Methods: Based on data from the Thyroid disease, Iodine nutrition and Diabetes Epidemiology (TIDE) study, 49,433 euthyroid individuals and 7,719 SCH patients aged ≥18 years were enrolled. Patients with a history of hypertension or thyroid disease were excluded. SCH was determined by manufacturer reference range. Overall hypertension and stage 1 and 2 hypertension were diagnosed according to the guidelines issued by the American College of Cardiology/American Heart Association in 2017.
Results: The prevalence of overall hypertension (48.7%), including stage 1 (28.9%) and 2 (19.8%) hypertension, increased significantly in SCH patients compared with euthyroid subjects. With elevated serum thyroid stimulating hormone (TSH) level, the hyper-tension prevalence also increased significantly from the euthyroid to different SCH subgroups, which was more profound in females or subjects aged <65 years. The age- and sex-specific regression analysis further demonstrated the same trends in the general population and in the 1:1 propensity matched population. Similarly, several BP components (i.e., systolic, diastolic, and mean arterial BP) were positively associated with TSH elevation, and regression analysis also confirmed that all BP components were closely related with SCH in female subjects aged <65 years.
Conclusion: The prevalence of hypertension increases for patients with SCH. SCH tends to be associated with hypertension and BP components in females younger than 65 years.

KCI등재 SCI SCOPUS

10Association between Iodine Intake, Thyroid Function, and Papillary Thyroid Cancer: A Case-Control Study

저자 : Kyungsik Kim , Sun Wook Cho , Young Joo Park , Kyu Eun Lee , Dong-wook Lee , Sue K. Park

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 790-799 (10 pages)

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Background: This study aimed to assess the effects of iodine intake, thyroid function, and their combined effect on the risk of papillary thyroid cancer (PTC) and papillary thyroid microcarcinoma (PTMC).
Methods: A case-control study was conducted including 500 community-based controls who had undergone a health check-up, and 446 overall PTC cases (209 PTC and 237 PTMC) from the Thyroid Cancer Longitudinal Study. Urinary iodine concentration (UIC), was used as an indicator of iodine intake, and serum for thyroid function. The risk of PTC and PTMC was estimated using unconditional logistic regression.
Results: Excessive iodine intake (UIC ≥220 μg/gCr) was associated with both PTC (odds ratio [OR], 18.13 95% confidence inter-val [CI], 8.87 to 37.04) and PTMC (OR, 8.02; 95% CI, 4.64 to 13.87), compared to adequate iodine intake (UIC, 85 to 219 μg/gCr). Free thyroxine (T4) levels ≥1.25 ng/dL were associated with PTC (OR, 1.97; 95% CI, 1.36 to 2.87) and PTMC (OR, 2.98; 95% CI, 2.01 to 4.41), compared to free T4 levels of 0.7 to 1.24 ng/dL. Individuals with excessive iodine intake and high free T4 levels had a greatly increased OR of PTC (OR, 43.48; 95% CI, 12.63 to 149.62), and PTMC (OR, 26.96; 95% CI, 10.26 to 70.89), compared to individuals with adequate iodine intake and low free T4 levels.
Conclusion: Excessive iodine intake using creatinine-adjusted UIC and high free T4 levels may have a synergistic effect on PTC and PTMC. Considering both iodine intake and thyroid function is important to assess PTC and PTMC risk.

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KCI등재SCISCOUPUS

1The Role of Thyroid Hormone in the Regulation of Cerebellar Development

저자 : Sumiyasu Ishii , Izuki Amano , Noriyuki Koibuchi

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 703-716 (14 pages)

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The proper organized expression of specific genes in time and space is responsible for the organogenesis of the central nervous system including the cerebellum. The epigenetic regulation of gene expression is tightly regulated by an intrinsic intracellular genetic program, local stimuli such as synaptic inputs and trophic factors, and peripheral stimuli from outside of the brain including hormones. Some hormone receptors are expressed in the cerebellum. Thyroid hormones (THs), among numerous circulating hormones, are well-known major regulators of cerebellar development. In both rodents and human, hypothyroidism during the postnatal developmental period results in abnormal morphogenesis or altered function. THs bind to the thyroid hormone receptors (TRs) in the nuclei and with the help of transcriptional cofactors regulate the transcription of target genes. Gene regulation by TR induces cell proliferation, migration, and differentiation, which are necessary for brain development and plasticity. Thus, the lack of TH action mediators may directly cause aberrant cerebellar development. Various kinds of animal models have been established in a bid to study the mechanism of TH action in the cerebellum. Interestingly, the phenotypes differ greatly depending on the models. Herein we summarize the actions of TH and TR particularly in the developing cerebellum.

KCI등재SCISCOUPUS

2Active Surveillance as an Effective Management Option for Low-Risk Papillary Thyroid Microcarcinoma

저자 : Min Ji Jeon , Won Gu Kim , Tae Yong Kim , Young Kee Shong , Won Bae Kim

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 717-724 (8 pages)

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Active surveillance (AS) for low-risk papillary thyroid microcarcinoma (PTMC) has been accepted worldwide as safe and effective. Despite the growing acceptance of AS in the management of low-risk PTMCs, there are barriers to AS in real clinical settings, and it is important to understand and establish appropriate AS protocol from initial evaluation to follow-up. PTMC management strategies should be decided upon after careful consideration of patient and tumor characteristics by a multidisciplinary team of thyroid cancer specialists. Patients should understand the risks and benefits of AS, participate in decision-making and follow structured monitoring strategies. In this review, we discuss clinical outcomes of AS from previous studies, optimal indications and follow-up strategies for AS, and unresolved questions about AS.

KCI등재SCISCOUPUS

3The Concept of Economic Evaluation and Its Application in Thyroid Cancer Research

저자 : Kyungsik Kim , Mijin Kim , Woojin Lim , Bo Hyun Kim , Sue K. Park

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 725-736 (12 pages)

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Economic evaluation is a type of comparative analysis between interventions in terms of both their resource use and health outcomes. Due to the good prognosis of thyroid cancer (TC), the socioeconomic burden of TC patients post-diagnosis is increasing. Therefore, economic evaluation studies focusing on TC are recommended. This study aimed to describe the concept and methods of economic evaluation and reviewed previous TC studies. Several previous studies compared the costs of interventions or evaluated recurrence, complications, or quality of life as measures of their effectiveness. Regarding costs, most studies focused on direct costs and applied hypothetical models. Cost-minimization analysis should be distinguished from simple cost analysis. Furthermore, due to the universality of the term “cost-effectiveness analysis” (CEA), several studies have not distinguished CEA from cost-utility analysis; this point needs to be considered in future research. Cost-benefit analyses have not been conducted in previous TC research. Since TC has a high survival rate and good prognosis, the need for economic evaluations has recently been pointed out. Therefore, correct concepts and methods are needed to obtain clear economic evaluation results. On this basis, it will be possible to provide appropriate guidelines for TC treatment and management in the future.

KCI등재SCISCOUPUS

4Exercise/Resistance Training and Muscle Stem Cells

저자 : So-ichiro Fukada , Ayasa Nakamura

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 737-744 (8 pages)

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Skeletal muscle has attracted attention as endocrine organ, because exercise-dependent cytokines called myokines/exerkines are released from skeletal muscle and are involved in systemic functions. While, local mechanical loading to skeletal muscle by exercise or resistance training alters myofiber type and size and myonuclear number. Skeletal muscle-resident stem cells, known as muscle satellite cells (MuSCs), are responsible for the increased number of myonuclei. Under steady conditions, MuSCs are maintained in a mitotically quiescent state but exit from that state and start to proliferate in response to high physical activity. Alterations in MuSC behavior occur when myofibers are damaged, but the lethal damage to myofibers does not seem to evoke mechanical loading-dependent MuSC activation and proliferation. Given that MuSCs proliferate without damage, it is unclear how the different behaviors of MuSCs are controlled by different physical activities. Recent studies demonstrated that myonuclear number reflects the size of myofibers; hence, it is crucial to know the properties of MuSCs and the mechanism of myonuclear accretion by MuSCs. In addition, the elucidation of mechanical load-dependent changes in muscle resident cells, including MuSCs, will be necessary for the discovery of new myokines/exerkines and understating skeletal muscle diseases.

KCI등재SCISCOUPUS

5Effects of Intermittent Fasting on the Circulating Levels and Circadian Rhythms of Hormones

저자 : Bo Hye Kim , Yena Joo , Min-seon Kim , Han Kyoung Choe , Qingchun Tong , Obin Kwon

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 745-756 (12 pages)

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Intermittent fasting has become an increasingly popular strategy in losing weight and associated reduction in obesity-related medical complications. Overwhelming studies support metabolic improvements from intermittent fasting in blood glucose levels, cardiac and brain function, and other health benefits, in addition to weight loss. However, concerns have also been raised on side effects including muscle loss, ketosis, and electrolyte imbalance. Of particular concern, the effect of intermittent fasting on hormonal circadian rhythms has received little attention. Given the known importance of circadian hormonal changes to normal physiology, potential detrimental effects by dysregulation of hormonal changes deserve careful discussions. In this review, we describe the changes in circadian rhythms of hormones caused by intermittent fasting. We covered major hormones commonly pathophysiologically involved in clinical endocrinology, including insulin, thyroid hormones, and glucocorticoids. Given that intermittent fasting could alter both the level and frequency of hormone secretion, decisions on practicing intermittent fasting should take more considerations on potential detrimental consequences versus beneficial effects pertaining to individual health conditions.

KCI등재SCISCOUPUS

6COVID-19 Vaccination for Endocrine Patients: A Position Statement from the Korean Endocrine Society

저자 : Cheol Ryong Ku , Kyong Yeun Jung , Chang Ho Ahn , Jun Sung Moon , Ju Hee Lee , Eun Heui Kim , Hyemi Kwon , Hee Kyung Kim , Sunghwan Suh , Sangmo Hong , Jeonghoon Ha , Eun Roh , Jin Hwa Kim , Mi-kyung Ki

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 757-765 (9 pages)

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Since the first outbreak of coronavirus disease 2019 (COVID-19), ongoing efforts have been made to discover an efficacious vaccine against COVID-19 to combat the pandemic. In most countries, both mRNA and DNA vaccines have been administered, and their side effects have also been reported. The clinical course of COVID-19 and the effects of vaccination against COVID-19 are both influenced by patients' health status and involve a systemic physiological response. In view of the systemic function of endocrine hormones, endocrine disorders themselves and the therapeutics used to treat them can influence the outcomes of vaccination for COVID-19. However, there are very limited data to support the development of clinical guidelines for patients with specific medical backgrounds based on large clinical trials. In the current severe circumstances of the COVID-19 pandemic, position statements made by clinical specialists are essential to provide appropriate recommendations based on both medical evidence and clinical experiences. As endocrinologists, we would like to present the medical background of COVID-19 vaccination, as well as precautions to prevent the side effects of COVID-19 vaccination in patients with specific endocrine disorders, including adrenal insufficiency, diabetes mellitus, osteoporosis, autoimmune thyroid disease, hypogonadism, and pituitary disorders.

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7Higher Weight Variability Could Bring You a Fatty Liver

저자 : Yeoree Yang , Jae-hyoung Cho

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 766-768 (3 pages)

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8Thyroid Hormone Profile and Its Prognostic Impact on the Coronavirus Disease 2019 in Korean Patients

저자 : Jiyeon Ahn , Min Kyung Lee , Jae Hyuk Lee , Seo Young Sohn

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 769-777 (9 pages)

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Background: Data on the association between coronavirus disease 2019 (COVID-19) and thyroid have been reported, including overt thyrotoxicosis and suppression of thyroid function. We aimed to evaluate the thyroid hormone profile and its association with the prognosis of COVID-19 in Korean patients.
Methods: The clinical data of 119 patients with COVID-19, admitted in the Myongji Hospital, Goyang, South Korea, were retrospectively evaluated. The thyroid hormone profiles were analyzed and compared based on disease severity (non-severe disease vs. severe to critical disease). Clinical outcomes were analyzed according to the tertiles of thyroid hormones.
Results: Of the 119 patients, 76 (63.9%) were euthyroid, and none presented with overt thyroid dysfunction. Non-thyroidal illness syndrome was the most common manifestation (18.5%), followed by subclinical thyrotoxicosis (14.3%) among patients with thyroid dysfunction. Thyroid stimulating hormone (TSH) and triiodothyronine (T3) levels were significantly lower in patients with severe to critical disease than in those with non-severe disease (P<0.05). Patients in the lowest T3 tertile (< 0.77 ng/mL) had higher rates of mechanical ventilation, intensive care unit admission, and death than those in the middle and highest ( >1.00 ng/mL) T3 tertiles (P<0.05). COVID-19 patients in the lowest T3 tertile were independently associated with mortality (hazard ratio, 5.27; 95% confidence interval, 1.09 to 25.32; P=0.038) compared with those in the highest T3 tertile.
Conclusion: Thyroid dysfunction is common in COVID-19 patients. Changes in serum TSH and T3 levels may be important markers of disease severity in COVID-19. Decreased T3 levels may have a prognostic significance in COVID-19 related outcome.

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9The Positive Association between Subclinical Hypothyroidism and Newly-Diagnosed Hypertension Is More Explicit in Female Individuals Younger than 65

저자 : Xichang Wang , Haoyu Wang , Li Yan , Lihui Yang , Yuanming Xue , Jing Yang , Yongli Yao , Xulei Tang , Nanwei Tong , Guixia Wang , Jinan Zhang , Youmin Wang , Jianming Ba , Bing Chen , Jianling Du

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 778-789 (12 pages)

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Background: Subclinical hypothyroidism (SCH) is the most common thyroid dysfunction, and its relationship with blood pressure (BP) has been controversial. The aim of the study was to analyze the association between SCH and newly-diagnosed hypertension.
Methods: Based on data from the Thyroid disease, Iodine nutrition and Diabetes Epidemiology (TIDE) study, 49,433 euthyroid individuals and 7,719 SCH patients aged ≥18 years were enrolled. Patients with a history of hypertension or thyroid disease were excluded. SCH was determined by manufacturer reference range. Overall hypertension and stage 1 and 2 hypertension were diagnosed according to the guidelines issued by the American College of Cardiology/American Heart Association in 2017.
Results: The prevalence of overall hypertension (48.7%), including stage 1 (28.9%) and 2 (19.8%) hypertension, increased significantly in SCH patients compared with euthyroid subjects. With elevated serum thyroid stimulating hormone (TSH) level, the hyper-tension prevalence also increased significantly from the euthyroid to different SCH subgroups, which was more profound in females or subjects aged <65 years. The age- and sex-specific regression analysis further demonstrated the same trends in the general population and in the 1:1 propensity matched population. Similarly, several BP components (i.e., systolic, diastolic, and mean arterial BP) were positively associated with TSH elevation, and regression analysis also confirmed that all BP components were closely related with SCH in female subjects aged <65 years.
Conclusion: The prevalence of hypertension increases for patients with SCH. SCH tends to be associated with hypertension and BP components in females younger than 65 years.

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10Association between Iodine Intake, Thyroid Function, and Papillary Thyroid Cancer: A Case-Control Study

저자 : Kyungsik Kim , Sun Wook Cho , Young Joo Park , Kyu Eun Lee , Dong-wook Lee , Sue K. Park

발행기관 : 대한내분비학회 간행물 : Endocrinology and Metabolism(구 대한내분비학회지) 36권 4호 발행 연도 : 2021 페이지 : pp. 790-799 (10 pages)

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Background: This study aimed to assess the effects of iodine intake, thyroid function, and their combined effect on the risk of papillary thyroid cancer (PTC) and papillary thyroid microcarcinoma (PTMC).
Methods: A case-control study was conducted including 500 community-based controls who had undergone a health check-up, and 446 overall PTC cases (209 PTC and 237 PTMC) from the Thyroid Cancer Longitudinal Study. Urinary iodine concentration (UIC), was used as an indicator of iodine intake, and serum for thyroid function. The risk of PTC and PTMC was estimated using unconditional logistic regression.
Results: Excessive iodine intake (UIC ≥220 μg/gCr) was associated with both PTC (odds ratio [OR], 18.13 95% confidence inter-val [CI], 8.87 to 37.04) and PTMC (OR, 8.02; 95% CI, 4.64 to 13.87), compared to adequate iodine intake (UIC, 85 to 219 μg/gCr). Free thyroxine (T4) levels ≥1.25 ng/dL were associated with PTC (OR, 1.97; 95% CI, 1.36 to 2.87) and PTMC (OR, 2.98; 95% CI, 2.01 to 4.41), compared to free T4 levels of 0.7 to 1.24 ng/dL. Individuals with excessive iodine intake and high free T4 levels had a greatly increased OR of PTC (OR, 43.48; 95% CI, 12.63 to 149.62), and PTMC (OR, 26.96; 95% CI, 10.26 to 70.89), compared to individuals with adequate iodine intake and low free T4 levels.
Conclusion: Excessive iodine intake using creatinine-adjusted UIC and high free T4 levels may have a synergistic effect on PTC and PTMC. Considering both iodine intake and thyroid function is important to assess PTC and PTMC risk.

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