scholarly journals Association between triglyceride-glucose index and thyroid function in euthyroid adults: The Korea National Health and Nutritional Examination Survey 2015

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254630
Author(s):  
Wonsuk Choi ◽  
Ji Yong Park ◽  
A. Ram Hong ◽  
Jee Hee Yoon ◽  
Hee Kyung Kim ◽  
...  
Keyword(s):  
Thyroid Function ◽  
National Health ◽  
Surrogate Marker ◽  
Cross Sectional Study ◽  
Model Assessment ◽  
Cross Sectional ◽  
Tyg Index ◽  
Normal Thyroid Function ◽  
Relationship Of ◽  
Nutritional Examination Survey

Objectives Low-normal thyroid function is associated with numerous metabolic risk factors including insulin resistance (IR). Triglyceride-glucose (TyG) index is a new surrogate marker of IR calculated by fasting triglyceride and glucose levels. Here, we investigated the association between thyroid function and TyG index in non-diabetic euthyroid adults. Methods This cross-sectional study was based on data from the Korean National Health and Nutritional Examination Survey 2015 including 1482 individuals (741 men and 741 women). Serum thyrotropin (TSH) and free thyroxine (fT4) levels were measured. Results After adjusting for confounders, there was an inverse relationship of TyG index with fT4 in men (β = –0.094, P = 0.009) and a positive relationship of TyG index with TSH in women (β = 0.078, P = 0.018). The lowest fT4 tertile in men (P = 0.001) and the highest TSH tertile in women (P = 0.010) exhibited increased TyG index after adjusting for confounders. The lowest fT4 tertile also showed increased homeostatic model assessment for IR (HOMA-IR) only in men (P = 0.006). Odds ratios (ORs) for the high TyG index, which was defined as the highest TyG quartile decreased in the highest and second highest tertile of fT4 in men (OR = 0.41 and OR = 0.45, respectively; P < 0.001) and increased in highest tertile of TSH in women (OR = 1.81, P = 0.031) after adjusting for confounders. The OR for high HOMA-IR defined as the highest HOMA-IR quartile was also lower in the highest and second highest fT4 tertiles in men (both OR = 0.47; P = 0.003). Conclusions This is the first study to suggest that TyG index is a good surrogate marker of IR in evaluating its relationship with thyroid function.

scholarly journals Mediation Effect of Obesity on the Association Between Triglyceride-glucose Index and Hyperuricemia in Chinese Hypertension Adults.

2021 ◽  
Author(s):  
Jin Sun ◽  
Yongkang Su ◽  
Man Li ◽  
Shouyuan Ma ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Fasting Blood Glucose ◽  
Surrogate Marker ◽  
Cross Sectional Study ◽  
Han Chinese ◽  
Mediation Effect ◽  
Cross Sectional ◽  
Tyg Index ◽  
Triglyceride Glucose Index ◽  
Relationship Of

Abstract Background: The triglyceride glucose (TyG) index was regarded as a simple surrogate marker of insulin resistance (IR). It is confirmed that IR was significantly associated with hyperuricemia, and obesity was the risk factor for IR and hyperuricemia. However, the relationship of TyG index and hyperuricemia and the potential role of obesity in Han Chinese hypertension are not entirely elucidated.Method：A community-based cross-sectional study was conducted in 4551 hypertension patients aged 40-75 years with clinical and biochemical data. The TyG index was calculated as ln [fasting triglyceride (mg/dl) × fasting blood glucose (mg/dl)/2]. Hyperuricemia was determined as serum uric acid ≥357μmol/L (6 mg/dl) for females and ≥417μmol/L (7 mg/dl) for males. Body mass index (BMI), waist (WC) and hip circumference (HC) were regarded as obesity indexes, to evaluate the mediation effect of the association between TyG index and hyperuricemia.Result：The TyG index was higher in patients with hyperuricemia than in those without (8.99±0.61, 8.70±0.59, P<0.001). The prevalence of hyperuricemia in patients with the lowest (≤8.32), second (8.33-8.66), the third (8.67-9.07) and the highest quartile (≥9.08) of TyG index was 6.0%, 10.4%, 15.4%, 21.4%, respectively. Logistic regression analysis suggested that the higher quartile of TyG index were associated with increased hyperuricemia risk whether in crude or adjusted models (P<0.05). Mediation analysis showed that all of our obesity indexes partially mediated the association between TyG index and hyperuricemia to some extent.Conclusion：TyG index is significantly associated with hyperuricemia in hypertension patients among Han Chinese, obesity plays a partial mediation role in this relationship.

scholarly journals Mediation effect of obesity on the association between triglyceride-glucose index and hyperuricemia in Chinese hypertension adults.

2021 ◽  
Author(s):  
Jin Sun ◽  
Yongkang Su ◽  
Man Li ◽  
Shouyuan Ma ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Fasting Blood Glucose ◽  
Surrogate Marker ◽  
Cross Sectional Study ◽  
Han Chinese ◽  
Mediation Effect ◽  
Cross Sectional ◽  
Tyg Index ◽  
Triglyceride Glucose Index ◽  
The Relationship

Abstract Background and Aims: The triglyceride glucose (TyG) index was regarded as a simple surrogate marker of insulin resistance (IR). It is confirmed that IR was significantly associated with hyperuricemia, and obesity was the risk factor for IR and hyperuricemia. However, the relationship between the TyG index and hyperuricemia and the potential role of obesity in Han Chinese hypertension are not entirely elucidated.Methods and Results： A community-based cross-sectional study was conducted in 4551 hypertension patients aged 40-75 years with clinical and biochemical data. The TyG index was calculated as ln [fasting triglyceride (mg/dl) × fasting blood glucose (mg/dl)/2]. Hyperuricemia was determined as serum uric acid ≥357μmol/L (6 mg/dl) for females and ≥417μmol/L (7 mg/dl) for males. The TyG index was higher in patients with hyperuricemia than in those without (8.99±0.61, 8.70±0.59, P<0.001). The prevalence of hyperuricemia in patients with the lowest (≤8.32), second (8.33-8.66), third (8.67-9.07) and the highest quartile (≥9.08) of the TyG index was 6.0%, 10.4%, 15.4%, 21.4%, respectively. Logistic regression analysis suggested that the higher quartile of TyG index was associated with increased hyperuricemia risk whether in crude or adjusted models (P<0.05). Mediation analysis showed that all of our obesity indexes partially mediated the association between the TyG index and hyperuricemia to some extent.Conclusion：TyG index is significantly associated with hyperuricemia in hypertension patients among Han Chinese, obesity plays a partial mediation role in this relationship.

scholarly journals Risk of Liver Fibrosis According to TSH Levels in Euthyroid Subjects

2021 ◽  
Vol 10 (7) ◽  
pp. 1350
Author(s):  
Alba Martínez-Escudé ◽  
Guillem Pera ◽  
Lluís Rodríguez ◽  
Ingrid Arteaga ◽  
Carmen Expósito-Martínez ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
General Population ◽  
Thyroid Function ◽  
Liver Stiffness ◽  
Cross Sectional Study ◽  
Blood Analysis ◽  
Cross Sectional ◽  
Alcoholic Fatty Liver ◽  
Normal Thyroid ◽  
Normal Thyroid Function

Alterations in thyroid function may contribute to the development of liver fibrosis especially in subjects with non-alcoholic fatty liver disease. This study aimed to investigate the risk of liver fibrosis according to low-normal thyroid function in the general population. We performed a descriptive cross-sectional study in subjects from 18–75 years randomly selected from 16 primary health care centers from 2017–2019. Each subject underwent clinical evaluation, physical examination, blood analysis and transient hepatic elastography. Descriptive and multivariate logistic regression analyses were used to identify factors associated with fibrosis. We included 1096 subjects (60 ± 11 years; 61% women); 70% had strict-normal thyroid function and 30% had low-normal thyroid function. Low-normal thyroid function was associated with a higher liver stiffness (LS) values: 5.2 vs. 4.8 kPa (p = 0.001) and a greater prevalence of fibrosis: 6.1 vs. 3% (p = 0.016) and 4.3 vs. 2.1% (p = 0.044) for the cut-off points of ≥8.0 kPa and ≥9.2 kPa, respectively. After adjustment for potential confounding factors, the risk of fibrosis in subjects with low-normal thyroid function was OR 1.54 (p = 0.213). In conclusion, low-normal thyroid function is associated with higher LS values and a greater risk of liver fibrosis in the general population, being dependent on other metabolic factors.

scholarly journals Research on Clinical, Subclinical Characteristic of Incidental Thyroid Nodules

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A870-A870
Author(s):  
Bay Quang Nguyen
Keyword(s):  
Thyroid Cancer ◽  
Thyroid Carcinoma ◽  
Thyroid Function ◽  
Thyroid Nodules ◽  
Needle Aspiration ◽  
Cross Sectional Study ◽  
Thyroid Function Tests ◽  
Cross Sectional ◽  
Normal Thyroid ◽  
Normal Thyroid Function

Abstract Background: Incidental thyroid nodules has become more prevalent in recent years due to applying diagnostic imaging tests. Many studies show that the rate of thyroid cancer in this group of patients is relatively high. Objective: To assess patients with incidentally detected thyroid nodules, including those who were diagnosed with thyroid cancer. Materials and Methods: A cross-sectional study, which involved 208 patients with 389 thyroid nodules detected by thyroid ultrasound. All patients have thyroid function tests. 272 nodules were performed fine-needle aspiration. Patients with thyroid cancer were assessed histopathology after removal. Results: The participants’ mean age was 47.22 ± 12.02. The female / male ratio is 6.7/1. No patients had history of head and neck irradiation or living in epidemiological areas with high prevalence of goiter. TSH level: 96.2% normal, 2.4% low, 1.4% high. In thyroid cancer group: 100% of patients had normal thyroid function. Nodule characteristics on ultrasound: Majority of thyroid nodules had diameters less than 1.5 cm (85.6%), multi-nodularity(52.9%). The largest carcinoma nodule was 2.35 cm, 22.2% of patients with thyroid cancer had ≥ 3 nodules. The malignancy rate of TIRADS 5 was 70.6%. FNA results of 272 thyroid nodules: the majority were Bethesda II (74,2%); the incidence of carcinoma (Bethesda V, VI) is 17.4%. 36 patients account for 17,3%, with 42 nodules were performed surgery, the results of histopathology were 100% of papillary thyroid carcinoma, which was consistent with cytological results. Conclusion: Thyroid nodules are common in women patients at the age of 31-60 with normal thyroid function. Most of them are &lt;1.5 cm in size. There are 17.3% of patients were thyroid carcinoma.

scholarly journals Morphological and Functional Assessment of Thyroid in Individuals with Down Syndrome

2021 ◽  
Author(s):  
Celia Neder Kalil Mangabeira ◽  
Rafael Kalil Mangabeira ◽  
Luis Jesuino de Oliveira Andrade
Keyword(s):  
Down Syndrome ◽  
Thyroid Function ◽  
Autoimmune Thyroiditis ◽  
Thyroid Dysfunction ◽  
Cross Sectional Study ◽  
Free T4 ◽  
Cross Sectional ◽  
Key Words Down Syndrome ◽  
Normal Thyroid Function ◽  
Increased Risk

Individuals with Down syndrome (DS) present increased risk for thyroid dysfunction, especially hypothyroidism, due in increased expression of the DYRK1A gene. Objective: The aim of this study was to make a morphological functional thyroid assessment in individuals with DS. Materials and Methods: This is a descriptive cross-sectional study, consisting of 29 individuals with DS, with a mean age of 12,3 (0.66 / 36.00) years, 16 women (55.2%) and 13 men (44.8%), with a morphological/functional thyroid assessment being made comprising hormonal dose (Free T4, TSH), antithyroid antibody (TPOAb and TgAb) and ultrasonography of the thyroid. Results: Twenty-three (79.3%) individuals presented normal thyroid function while 6 (20.7%) presented with thyroid dysfunction, 4 with hypothyroidism and 2 with hyperthyroidism. Autoimmune thyroiditis and goiter were present in 27.6% of the individuals. Conclusion: Thyroid function should be assessed periodically in individuals with DS, in view of the high prevalence of thyroid dysfunction, especially autoimmune thyroiditis with consequent hypothyroidism. Key Words: Down Syndrome, thyroid, ultrasonography, thyroid dysfunction.

scholarly journals Association Between the Triglyceride Glucose Index and Alanine Aminotransferase Levels: a Cross-sectional Study

2021 ◽  
Author(s):  
Yu Hua ◽  
Haiyue Yu ◽  
Shuang Chen ◽  
Xueyao Zhang ◽  
Xingang Zhang ◽  
...  
Keyword(s):  
Alanine Aminotransferase ◽  
Cardiovascular Health ◽  
Surrogate Marker ◽  
Cross Sectional Study ◽  
Health Study ◽  
Cardiovascular Health Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Tyg Index ◽  
Triglyceride Glucose Index

Abstract Background: The triglyceride glucose index (TyG) has been proposed as a marker of insulin resistance or type 2 diabetes mellitus (T2DM). Risk of serum alanine aminotransferase (ALT) levels is increased in T2DM patients. We aimed to evaluate the association between TyG index and elevated ALT. Methods: A multicenter, cross-sectional study was conducted in China from Northeast China Rural Cardiovascular Health Study (NCRCHS), and 11,573 adults with complete data were included in our final analysis.Results: TyG index was positively associated with the prevalence of elevated ALT. Frequency of elevated ALT increased from the lowest to the top quartile of TyG in both sexes (p for trend <0.001). Compared with the participants in the lowest quartile of TyG, the adjusted odds ratio and 95% CIs for elevated ALT were 1.71 (1.32-2.21) and 2.46 (1.90-3.19) for those in the third and the fourth quartile of TyG (p<0.001). Compared with the first quartile of TyG, participants in the top quartile of TyG had more than 2 times risk for elevated ALT (2.38-times for men and 2.22-times for women, respectively, p<0.001). According to the ROC analysis, the optimal cut-off point of TyG for elevated ALT was 8.69 and 8.96 for men and women, respectively. Conclusions: TyG index is effective to identify individuals at risk for elevated ALT. TyG thresholds of 8.69 for men and 8.96 for women was highly sensitive for detecting elevated ALT subjects. Findings from this study underscore that TyG index may be suitable as a surrogate marker for abnormal liver enzymes in Chinese adults.

scholarly journals HbA1c is inversely associated with thyroid cysts in a euthyroid population: A cross-sectional study

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0253841
Author(s):  
Yuji Shimizu ◽  
Shin-Ya Kawashiri ◽  
Yuko Noguchi ◽  
Yasuhiro Nagata ◽  
Takahiro Maeda ◽  
...  
Keyword(s):  
Thyroid Function ◽  
Cross Sectional Study ◽  
Thyroid Stimulating Hormone ◽  
Thyroid Peroxidase ◽  
Sectional Study ◽  
Normal Range ◽  
Free Triiodothyronine ◽  
Free T4 ◽  
Cross Sectional ◽  
Normal Thyroid Function

Anti-thyroid peroxidase antibody (TPO-Ab) is revealed to be inversely associated with thyroid cysts among euthyroid population. TPO-Ab causes autoimmune thyroiditis by bolstering thyroid inflammation. Therefore, at least partly, absence of thyroid cysts could indicate latent thyroid damage. Since participants with subclinical hypothyroidism are reported to have higher HbA1c than normal healthy controls, HbA1c could be inversely associated with thyroid cysts through a mechanism reflecting latent thyroid damage. To investigate the association between HbA1c and thyroid cysts among a euthyroid population, a cross-sectional study was conducted on 1,724 Japanese individuals who were within the normal range of thyroid function [i.e., normal range of free triiodothyronine (T3) and free thyroxine (T4)] and aged 40–74 years. Among this study population, 564 were diagnosed with thyroid cysts. Independently of thyroid related hormones [thyroid stimulating hormone (TSH), free T3, and free T4] and known cardiovascular risk factors, HbA1c was found to be significantly inversely associated with the presence of thyroid cysts. This association remained significant even after this analysis was limited to participants within a normal range of TSH. The fully adjusted odds ratios (ORs) of thyroid cysts for 1 standard deviation (SD) increment of HbA1c were 0.84 (0.74, 0.95) for total participants and 0.80 (0.70, 0.92) for participants within a normal range of TSH. Among participants with normal thyroid function, HbA1c was inversely associated with the presence of thyroid cysts. The absence of thyroid cysts and higher levels of HbA1c could indicate the latent functional damage of the thyroid.

scholarly journals Lipid indices as simple and clinically useful surrogate markers for insulin resistance in the U.S. population

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Juncheol Lee ◽  
Bongyoung Kim ◽  
Wonhee Kim ◽  
Chiwon Ahn ◽  
Hyun Young Choi ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
The United States ◽  
Cross Sectional Study ◽  
Visceral Adiposity Index ◽  
Model Assessment ◽  
Cross Sectional ◽  
Resistance Risk ◽  
Tyg Index ◽  
Health And Nutrition ◽  
Cutoff Values

AbstractThis study aimed to compare the accuracy of novel lipid indices, including the visceral adiposity index (VAI), lipid accumulation product (LAP), triglycerides and glucose (TyG) index, TyG-body mass index (TyG-BMI), and TyG-waist circumference (TyG-WC), in identifying insulin resistance and establish valid cutoff values. This cross-sectional study used the data of 11,378 adults, derived from the United States National Health and Nutrition Examination Survey (1999–2016). Insulin resistance was defined as a homeostasis model assessment-insulin resistance value above the 75th percentile for each sex and race/ethnicities. The area under the curves (AUCs) were as follows: VAI, 0.735; LAP, 0.796; TyG index, 0.723; TyG-BMI, 0.823, and; TyG-WC, 0.822. The AUCs for TyG-BMI and TyG-WC were significantly higher than those for VAI, LAP, and TyG index (vs. TyG-BMI, p < 0.001; vs. TyG-WC, p < 0.001). The cutoff values were as follows: VAI: men 1.65, women 1.65; LAP: men 42.5, women 42.5; TyG index: men 4.665, women 4.575; TyG-BMI: men 135.5, women 135.5; and TyG-WC: men 461.5, women 440.5. Given that lipid indices can be easily calculated with routine laboratory tests, these values may be useful markers for insulin resistance risk assessments in clinical settings.

scholarly journals Association between Frequency of Breakfast Consumption and Insulin Resistance Using Triglyceride-Glucose Index: A Cross-Sectional Study of the Korea National Health and Nutrition Examination Survey (2016–2018)

2020 ◽  
Vol 17 (9) ◽  
pp. 3322
Author(s):  
Hye Jin Joo ◽  
Gyu Ri Kim ◽  
Eun-Cheol Park ◽  
Sung-In Jang
Keyword(s):  
Insulin Resistance ◽  
National Health ◽  
Cross Sectional Study ◽  
Nutrition Examination Survey ◽  
Cross Sectional ◽  
Breakfast Consumption ◽  
Social Burden ◽  
Tyg Index ◽  
Health And Nutrition ◽  
Important Message

Diabetes mellitus is an important chronic disease causing economic and social burden. Insulin resistance is a determinant of diabetes, and regular eating patterns are an important factor in blood sugar control. This study investigated the association between breakfast frequency and the risk of increased insulin resistance in Koreans. Data for 12,856 participants without diabetes in the 2016–2018 Korea National Health and Nutrition Examination Survey were analyzed. Insulin resistance was assessed using the triglyceride-glucose (TyG) index, while the median TyG index value was used to define higher (≥8.5) vs. lower (<8.5) insulin resistance. Association between breakfast frequency and risk of increased insulin resistance was investigated using multiple logistic regression. Compared with those who had regular breakfast 5–7 times per week, the odds ratios (95% confidence intervals) of individuals who did not eat breakfast were the highest at 1.42 (95% CI = 1.24–1.64, p ≤ 0.0001). Those who had breakfast 1–4 times per week had an odds ratio of 1.17 (95% CI = 1.03–1.32, p = 0.0153). We found that a lower weekly breakfast consumption was associated with a higher risk of insulin resistance in Koreans. Promoting the benefits of breakfast can be an important message to improve the health of the population.

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