Endocrinology and Metabolism

Volume 38(1); February 2023

Namgok Lecture 2022

Diabetes, Obesity and Metabolism
Incretin and Pancreatic β-Cell Function in Patients with Type 2 Diabetes: Chang Ho Ahn, Tae Jung Oh, Se Hee Min, Young Min Cho; Endocrinol Metab. 2023;38(1):1-9. Published online February 13, 2023; DOI: https://doi.org/10.3803/EnM.2023.103

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Abstract PDF PubReader ePub Crossref - TDM: To maintain normal glucose homeostasis after a meal, it is essential to secrete an adequate amount of insulin from pancreatic β-cells. However, if pancreatic β-cells solely depended on the blood glucose level for insulin secretion, a surge in blood glucose levels would be inevitable after the ingestion of a large amount of carbohydrates. To avoid a deluge of glucose in the bloodstream after a large carbohydrate- rich meal, enteroendocrine cells detect the amount of nutrient absorption from the gut lumen and secrete incretin hormones at scale. Since insulin secretion in response to incretin hormones occurs only in a hyperglycemic milieu, pancreatic β-cells can secrete a “Goldilocks” amount of insulin (i.e., not too much and not too little) to keep the blood glucose level in the normal range. In this regard, pancreatic β-cell sensitivity to glucose and incretin hormones is crucial for maintaining normal glucose homeostasis. In this Namgok lecture 2022, we review the effects of current anti-diabetic medications on pancreatic β-cell sensitivity to glucose and incretin hormones.

Review Articles

Diabetes, Obesity and Metabolism Big Data Articles (National Health Insurance Service Database)
Big Data Research in the Field of Endocrine Diseases Using the Korean National Health Information Database: Sun Wook Cho, Jung Hee Kim, Han Seok Choi, Hwa Young Ahn, Mee Kyoung Kim, Eun Jung Rhee; Endocrinol Metab. 2023;38(1):10-24. Published online February 9, 2023; DOI: https://doi.org/10.3803/EnM.2023.102

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Abstract PDF Supplementary Material PubReader ePub Crossref - TDM

The Korean National Health Information Database (NHID) contains big data combining information obtained from the National Health Insurance Service and health examinations. Data are provided in the form of a cohort, and the NHID can be used to conduct longitudinal studies and research on rare diseases. Moreover, data on the cause and date of death are provided by Statistics Korea. Research and publications based on the NHID have increased explosively in the field of endocrine disorders. However, because the data were not collected for research purposes, studies using the NHID have limitations, particularly the need for the operational definition of diseases. In this review, we describe the characteristics of the Korean NHID, operational definitions of endocrine diseases used for research, and an overview of recent studies in endocrinology using the Korean NHID.

Citations

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Diabetes severity is strongly associated with the risk of active tuberculosis in people with type 2 diabetes: a nationwide cohort study with a 6-year follow-up
Ji Young Kang, Kyungdo Han, Seung-Hwan Lee, Mee Kyoung Kim
Respiratory Research.2023;[Epub] CrossRef
Research on obesity using the National Health Information Database: recent trends
Eun-Jung Rhee
Cardiovascular Prevention and Pharmacotherapy.2023; 5(2): 35. CrossRef

Diabetes, Obesity and Metabolism
Glucagon-Like Peptide 1 Therapy: From Discovery to Type 2 Diabetes and Beyond: Adie Viljoen, Stephen C. Bain; Endocrinol Metab. 2023;38(1):25-33. Published online February 6, 2023; DOI: https://doi.org/10.3803/EnM.2022.1642

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Abstract PDF PubReader ePub Crossref - TDM

The therapeutic benefits of the incretin hormone, glucagon-like peptide 1 (GLP1), for people with type 2 diabetes and/or obesity, are now firmly established. The evidence-base arising from head-to-head comparative effectiveness studies in people with type 2 diabetes, as well as the recommendations by professional guidelines suggest that GLP1 receptor agonists should replace more traditional treatment options such as sulfonylureas and dipeptidyl-peptidase 4 (DPP4) inhibitors. Furthermore, their benefits in reducing cardiovascular events in people with type 2 diabetes beyond improvements in glycaemic control has led to numerous clinical trials seeking to translate this benefit beyond type 2 diabetes. Following early trial results their therapeutic benefit is currently being tested in other conditions including fatty liver disease, kidney disease, and Alzheimer’s disease.

Citations

Citations to this article as recorded by

Glucagon-like peptide 1 receptor agonists: cardiovascular benefits and mechanisms of action
John R. Ussher, Daniel J. Drucker
Nature Reviews Cardiology.2023;[Epub] CrossRef

Diabetes, Obesity and Metabolism
Overcoming Therapeutic Inertia as the Achilles’ Heel for Improving Suboptimal Diabetes Care: An Integrative Review: Boon-How Chew, Barakatun-Nisak Mohd-Yusof, Pauline Siew Mei Lai, Kamlesh Khunti; Endocrinol Metab. 2023;38(1):34-42. Published online February 16, 2023; DOI: https://doi.org/10.3803/EnM.2022.1649

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Abstract PDF PubReader ePub Crossref - TDM: The ultimate purpose of diabetes care is achieving the outcomes that patients regard as important throughout the life course. Despite advances in pharmaceuticals, nutraceuticals, psychoeducational programs, information technologies, and digital health, the levels of treatment target achievement in people with diabetes mellitus (DM) have remained suboptimal. This clinical care of people with DM is highly challenging, complex, costly, and confounded for patients, physicians, and healthcare systems. One key underlying problem is clinical inertia in general and therapeutic inertia (TI) in particular. TI refers to healthcare providers’ failure to modify therapy appropriately when treatment goals are not met. TI therefore relates to the prescribing decisions made by healthcare professionals, such as doctors, nurses, and pharmacists. The known causes of TI include factors at the level of the physician (50%), patient (30%), and health system (20%). Although TI is often multifactorial, the literature suggests that 28% of strategies are targeted at multiple levels of causes, 38% at the patient level, 26% at the healthcare professional level, and only 8% at the healthcare system level. The most effective interventions against TI are shorter intervals until revisit appointments and empowering nurses, diabetes educators, and pharmacists to review treatments and modify prescriptions.

Diabetes, Obesity and Metabolism
Renal Protection of Mineralocorticoid Receptor Antagonist, Finerenone, in Diabetic Kidney Disease: Dong-Lim Kim, Seung-Eun Lee, Nan Hee Kim; Endocrinol Metab. 2023;38(1):43-55. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2022.1629

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Abstract PDF PubReader ePub Crossref - TDM: Chronic kidney disease (CKD) is the most common cause of end-stage renal disease in patients with type 2 diabetes mellitus (T2DM). CKD increases the risk of cardiovascular diseases; therefore, its prevention and treatment are important. The prevention of diabetic kidney disease (DKD) can be achieved through intensive glycemic control and blood pressure management. Additionally, DKD treatment aims to reduce albuminuria and improve kidney function. In patients with T2DM, renin-angiotensin-aldosterone system inhibitors, sodium glucose cotransporter 2 inhibitors, and glucagon-like peptide-1 receptor agonists can delay the progression of DKD. Hence, there is a need for novel treatments that can effectively suppress DKD progression. Finerenone is a first-in-class nonsteroidal mineralocorticoid receptor antagonist with clinically proven efficacy in improving albuminuria, estimated glomerular filtration rate, and risk of cardiovascular events in early and advanced DKD. Therefore, finerenone is a promising treatment option to delay DKD progression. This article reviews the mechanism of renal effects and major clinical outcomes of finerenone in DKD.

Calcium & bone metabolism
Cardiovascular Impact of Calcium and Vitamin D Supplements: A Narrative Review: Fatima Zarzour, Ahmad Didi, Mohammed Almohaya, David Kendler; Endocrinol Metab. 2023;38(1):56-68. Published online February 16, 2023; DOI: https://doi.org/10.3803/EnM.2022.1644

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Abstract PDF PubReader ePub Crossref - TDM: Calcium and vitamin D play an important role in mineral homeostasis and the maintenance of skeletal health. Calcium and vitamin D supplements have been widely used for fracture prevention in elderly populations. Many trials have studied the effectiveness and cardiovascular safety of calcium and vitamin D supplementation, with disparate results. In this review, we summarize the most important trials and systematic reviews. There is significant heterogeneity in clinical trial design, differences in the nature of trial outcomes (self-reported vs. verified), prior calcium intake, and trial size. Inconsistent results have been reported concerning the effects of calcium and vitamin D supplementation on cardiovascular outcomes. Most current guidelines recommend calcium intake of up to 1,200 mg daily, preferably from the diet, without concern for cardiovascular risk. Recommendations regarding vitamin D supplementation vary widely. There is compelling evidence from well-conducted randomized trials that modest vitamin D supplementation is safe but does not confer cardiovascular benefit or cardiovascular harm.

Editorials

Thyroid Thyroid Cancer Screening
To Screen or Not to Screen?: Do Joon Park; Endocrinol Metab. 2023;38(1):69-71. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.104

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Thyroid Thyroid Cancer Screening
The 2017 United States Preventive Services Task Force Recommendation for Thyroid Cancer Screening Is No Longer the Gold Standard: Ka Hee Yi; Endocrinol Metab. 2023;38(1):72-74. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.106

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Thyroid Thyroid Cancer Screening
Thyroid Cancer Screening: How to Maximize Its Benefits and Minimize Its Harms: Jung Hwan Baek; Endocrinol Metab. 2023;38(1):75-77. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.105

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Diabetes, Obesity and Metabolism
All That Glitters Is Not Gold: The Same Sleep Time, but Different Diabetogenic Outcomes: Bohye Kim, Obin Kwon; Endocrinol Metab. 2023;38(1):78-80. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.107

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Original Articles

Thyroid Thyroid Cancer Screening
Survival Comparison of Incidentally Found versus Clinically Detected Thyroid Cancers: An Analysis of a Nationwide Cohort Study: Shinje Moon, Eun Kyung Lee, Hoonsung Choi, Sue K. Park, Young Joo Park; Endocrinol Metab. 2023;38(1):81-92. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.1668

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Abstract PDF PubReader ePub Crossref - TDM

Background
The true benefit of thyroid cancer screening is incompletely understood. This study investigated the impact of ultrasound screening on thyroid cancer outcomes through a comparison with symptomatic thyroid cancer using data from a nationwide cohort study in Korea.
Methods
Cox regression analysis was performed to assess the hazard ratios (HRs) for all-cause and thyroid cancer-specific mortality. Considering the possible bias arising from age, sex, year of thyroid cancer registration, and confounding factors for mortality (including smoking/drinking status, diabetes, and hypertension), all analyses were conducted with stabilized inverse probability of treatment weighting (IPTW) according to the route of detection.
Results
Of 5,796 patients with thyroid cancer, 4,145 were included and 1,651 were excluded due to insufficient data. In comparison with the screening group, the clinical suspicion group was associated with large tumors (17.2±14.6 mm vs. 10.4±7.9 mm), advanced T stage (3–4) (odds ratio [OR], 1.24; 95% confidence interval [CI], 1.09 to 1.41), extrathyroidal extension (OR, 1.16; 95% CI, 1.02 to 1.32), and advanced stage (III–IV) (OR, 1.16; 95% CI, 1.00 to 1.35). In IPTW-adjusted Cox regression analysis, the clinical suspicion group had significantly higher risks of all-cause mortality (HR, 1.43; 95% CI, 1.14 to 1.80) and thyroid cancer-specific mortality (HR, 3.07; 95% CI, 1.77 to 5.29). Mediation analysis showed that the presence of thyroid-specific symptoms was directly associated with a higher risk of cancer-specific mortality. Thyroid-specific symptoms also indirectly affected thyroid cancer-specific mortality, mediated by tumor size and advanced clinicopathologic status.
Conclusion
Our findings provide important evidence for the survival benefit of early detection of thyroid cancer compared to symptomatic thyroid cancer.

Citations

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Clinical Characteristics, Diagnostic Approach and Outcome of Thyroid Incidental Findings vs. Clinically Overt Thyroid Nodules: An Observational Single-Centre Study
Tom Jansen, Nike Stikkelbroeck, Annenienke van de Ven, Ilse van Engen-van Grunsven, Marcel Janssen, Han Bonenkamp, Martin Gotthardt, Romana T. Netea-Maier
Cancers.2023; 15(8): 2350. CrossRef
Lower Thyroid Cancer Mortality in Patients Detected by Screening: A Meta-Analysis
Shinje Moon, Young Shin Song, Kyong Yeun Jung, Eun Kyung Lee, Young Joo Park
Endocrinology and Metabolism.2023; 38(1): 93. CrossRef
To Screen or Not to Screen?
Do Joon Park
Endocrinology and Metabolism.2023; 38(1): 69. CrossRef
The 2017 United States Preventive Services Task Force Recommendation for Thyroid Cancer Screening Is No Longer the Gold Standard
Ka Hee Yi
Endocrinology and Metabolism.2023; 38(1): 72. CrossRef
Thyroid Cancer Screening: How to Maximize Its Benefits and Minimize Its Harms
Jung Hwan Baek
Endocrinology and Metabolism.2023; 38(1): 75. CrossRef

Thyroid Thyroid Cancer Screening
Lower Thyroid Cancer Mortality in Patients Detected by Screening: A Meta-Analysis: Shinje Moon, Young Shin Song, Kyong Yeun Jung, Eun Kyung Lee, Young Joo Park; Endocrinol Metab. 2023;38(1):93-103. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.1667

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Abstract PDF Supplementary Material PubReader ePub Crossref - TDM

Background
Thyroid cancer screening has contributed to the skyrocketing prevalence of thyroid cancer. However, the true benefit of thyroid cancer screening is not fully understood. This study aimed to evaluate the impact of screening on the clinical outcomes of thyroid cancer by comparing incidental thyroid cancer (ITC) with non-incidental thyroid cancer (NITC) through a meta-analysis.
Methods
PubMed and Embase were searched from inception to September 2022. We estimated and compared the prevalence of high-risk features (aggressive histology of thyroid cancer, extrathyroidal extension, metastasis to regional lymph nodes or distant organs, and advanced tumor-node-metastasis [TNM] stage), thyroid cancer-specific death, and recurrence in the ITC and NITC groups. We also calculated pooled risks and 95% confidence intervals (CIs) of the outcomes derived from these two groups.
Results
From 1,078 studies screened, 14 were included. In comparison to NITC, the ITC group had a lower incidence of aggressive histology (odds ratio [OR], 0.46; 95% CI, 0.31 to 0.7), smaller tumors (mean difference, −7.9 mm; 95% CI, −10.2 to −5.6), lymph node metastasis (OR, 0.64; 95% CI, 0.48 to 0.86), and distant metastasis (OR, 0.42; 95% CI, 0.23 to 0.77). The risks of recurrence and thyroid cancer-specific mortality were also lower in the ITC group (OR, 0.42; 95% CI, 0.25 to 0.71 and OR, 0.46; 95% CI, 0.28 to 0.74) than in the NITC group.
Conclusion
Our findings provide important evidence of a survival benefit from the early detection of thyroid cancer compared to symptomatic thyroid cancer.

Citations

Citations to this article as recorded by

To Screen or Not to Screen?
Do Joon Park
Endocrinology and Metabolism.2023; 38(1): 69. CrossRef
The 2017 United States Preventive Services Task Force Recommendation for Thyroid Cancer Screening Is No Longer the Gold Standard
Ka Hee Yi
Endocrinology and Metabolism.2023; 38(1): 72. CrossRef
Thyroid Cancer Screening: How to Maximize Its Benefits and Minimize Its Harms
Jung Hwan Baek
Endocrinology and Metabolism.2023; 38(1): 75. CrossRef
Delayed Surgery for and Outcomes of Papillary Thyroid Cancer: Is the Pendulum Still Swinging?
Giorgio Grani
Clinical Thyroidology.2023; 35(5): 192. CrossRef

Thyroid Thyroid Cancer Screening
A Comprehensive Assessment of the Harms of Fine-Needle Aspiration Biopsy for Thyroid Nodules: A Systematic Review: Ji Yong Park, Wonsuk Choi, A Ram Hong, Jee Hee Yoon, Hee Kyung Kim, Ho-Cheol Kang; Endocrinol Metab. 2023;38(1):104-116. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.1669

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Abstract PDF Supplementary Material PubReader ePub Crossref - TDM

Background
There have concerns related with the potential harms of fine-needle aspiration biopsy (FNAB). We aimed to summarize the clinical complications and evaluate the safety of FNAB.
Methods
Studies related with the harms of FNAB were searched on MEDLINE, Embase, Cochrane library, and KoreaMed from 2012 to 2022. Also, studies reviewed in the previous systematic reviews were evaluated. Included clinical complications were postprocedural pain, bleeding events, neurological symptoms, tracheal puncture, infections, post-FNAB thyrotoxicosis, and needle tract implantation of thyroid cancers.
Results
Twenty-three cohort studies were included in this review. Nine studies which were related with FNAB-related pain showed that most of the subjects had no or mild discomfort. The 0% to 6.4% of the patients had hematoma or hemorrhage after FNAB, according to 15 studies. Vasovagal reaction, vocal cord palsy, and tracheal puncture have rarely described in the included studies. Needle tract implantation of thyroid malignancies was described in three studies reporting 0.02% to 0.19% of the incidence rate.
Conclusion
FNAB is considered to be a safe diagnostic procedure with rare complications, which are mainly minor events. Thorough assessement of the patients’ medical condition when deciding to perform FNABs would be advisable to lower potential complications.

Citations

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To Screen or Not to Screen?
Do Joon Park
Endocrinology and Metabolism.2023; 38(1): 69. CrossRef
Thyroid Cancer Screening: How to Maximize Its Benefits and Minimize Its Harms
Jung Hwan Baek
Endocrinology and Metabolism.2023; 38(1): 75. CrossRef

Thyroid Thyroid Cancer Screening
Diagnostic Performance of Ultrasound-Based Risk Stratification Systems for Thyroid Nodules: A Systematic Review and Meta-Analysis: Leehi Joo, Min Kyoung Lee, Ji Ye Lee, Eun Ju Ha, Dong Gyu Na; Endocrinol Metab. 2023;38(1):117-128. Published online February 27, 2023; DOI: https://doi.org/10.3803/EnM.2023.1670

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Abstract PDF PubReader ePub Crossref - TDM

Background
This study investigated the diagnostic performance of biopsy criteria in four society ultrasonography risk stratification systems (RSSs) for thyroid nodules, including the 2021 Korean (K)-Thyroid Imaging Reporting and Data System (TIRADS).
Methods
The Ovid-MEDLINE, Embase, Cochrane, and KoreaMed databases were searched and a manual search was conducted to identify original articles investigating the diagnostic performance of biopsy criteria for thyroid nodules (≥1 cm) in four widely used society RSSs.
Results
Eleven articles were included. The pooled sensitivity and specificity were 82% (95% confidence interval [CI], 74% to 87%) and 60% (95% CI, 52% to 67%) for the American College of Radiology (ACR)-TIRADS, 89% (95% CI, 85% to 93%) and 34% (95% CI, 26% to 42%) for the American Thyroid Association (ATA) system, 88% (95% CI, 81% to 92%) and 42% (95% CI, 22% to 67%) for the European (EU)-TIRADS, and 96% (95% CI, 94% to 97%) and 21% (95% CI, 17% to 25%) for the 2016 K-TIRADS. The sensitivity and specificity were 76% (95% CI, 74% to 79%) and 50% (95% CI, 49% to 52%) for the 2021 K-TIRADS_1.5 (1.5-cm size cut-off for intermediate-suspicion nodules). The pooled unnecessary biopsy rates of the ACR-TIRADS, ATA system, EU-TIRADS, and 2016 K-TIRADS were 41% (95% CI, 32% to 49%), 65% (95% CI, 56% to 74%), 68% (95% CI, 60% to 75%), and 79% (95% CI, 74% to 83%), respectively. The unnecessary biopsy rate was 50% (95% CI, 47% to 53%) for the 2021 K-TIRADS_1.5.
Conclusion
The unnecessary biopsy rate of the 2021 K-TIRADS_1.5 was substantially lower than that of the 2016 K-TIRADS and comparable to that of the ACR-TIRADS. The 2021 K-TIRADS may help reduce potential harm due to unnecessary biopsies.

Citations

Citations to this article as recorded by

To Screen or Not to Screen?
Do Joon Park
Endocrinology and Metabolism.2023; 38(1): 69. CrossRef
The 2017 United States Preventive Services Task Force Recommendation for Thyroid Cancer Screening Is No Longer the Gold Standard
Ka Hee Yi
Endocrinology and Metabolism.2023; 38(1): 72. CrossRef
Thyroid Cancer Screening: How to Maximize Its Benefits and Minimize Its Harms
Jung Hwan Baek
Endocrinology and Metabolism.2023; 38(1): 75. CrossRef

Diabetes, Obesity and Metabolism Big Data Articles (National Health Insurance Service Database)
Predicting the Risk of Insulin-Requiring Gestational Diabetes before Pregnancy: A Model Generated from a Nationwide Population-Based Cohort Study in Korea: Seung-Hwan Lee, Jin Yu, Kyungdo Han, Seung Woo Lee, Sang Youn You, Hun-Sung Kim, Jae-Hyoung Cho, Kun-Ho Yoon, Mee Kyoung Kim; Endocrinol Metab. 2023;38(1):129-138. Published online January 27, 2023; DOI: https://doi.org/10.3803/EnM.2022.1609

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Abstract PDF PubReader ePub Crossref - TDM

Background
The severity of gestational diabetes mellitus (GDM) is associated with adverse pregnancy outcomes. We aimed to generate a risk model for predicting insulin-requiring GDM before pregnancy in Korean women.
Methods
A total of 417,210 women who received a health examination within 52 weeks before pregnancy and delivered between 2011 and 2015 were recruited from the Korean National Health Insurance database. The risk prediction model was created using a sample of 70% of the participants, while the remaining 30% were used for internal validation. Risk scores were assigned based on the hazard ratios for each risk factor in the multivariable Cox proportional hazards regression model. Six risk variables were selected, and a risk nomogram was created to estimate the risk of insulin-requiring GDM.
Results
A total of 2,891 (0.69%) women developed insulin-requiring GDM. Age, body mass index (BMI), current smoking, fasting blood glucose (FBG), total cholesterol, and γ-glutamyl transferase were significant risk factors for insulin-requiring GDM and were incorporated into the risk model. Among the variables, old age, high BMI, and high FBG level were the main contributors to an increased risk of insulin-requiring GDM. The concordance index of the risk model for predicting insulin-requiring GDM was 0.783 (95% confidence interval, 0.766 to 0.799). The validation cohort’s incidence rates for insulin-requiring GDM were consistent with the risk model’s predictions.
Conclusion
A novel risk engine was generated to predict insulin-requiring GDM among Korean women. This model may provide helpful information for identifying high-risk women and enhancing prepregnancy care.

Citations

Citations to this article as recorded by

Establishment and validation of a nomogram to predict the neck contracture after skin grafting in burn patients: A multicentre cohort study
Rui Li, Yangyang Zheng, Xijuan Fan, Zilong Cao, Qiang Yue, Jincai Fan, Cheng Gan, Hu Jiao, Liqiang Liu
International Wound Journal.2023;[Epub] CrossRef

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