scholarly journals Dyslipidemia, Insulin Resistance, Ectopic Lipid Accumulation, and Vascular Function in Resistance to Thyroid Hormone β

2021 ◽  
Author(s):  
Carla Moran ◽  
Carmel M McEniery ◽  
Nadia Schoenmakers ◽  
Catherine Mitchell ◽  
Alison Sleigh ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Thyroid Hormone ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Model Assessment ◽  
Nonesterified Fatty Acids ◽  
Resistance To Thyroid Hormone ◽  
Control Subjects ◽  
Flow Mediated Dilatation ◽  
Intrahepatic Lipid

Abstract Purpose In resistance to thyroid hormone due to mutations in thyroid hormone receptor β, peripheral tissues are variably refractory to the action of circulating thyroid hormones. We evaluated parameters contributing to atherosclerotic risk in this disorder. Methods We measured low-density lipoprotein cholesterol (LDL-C), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), nonesterified fatty acids (NEFA), intrahepatic lipid (IHL) and intramyocellular lipid (IMCL), Homeostasis-model assessment of insulin resistance (HOMA-IR), augmentation index (AIx) and pulse wave velocity (PWV), flow-mediated dilatation, and carotid intima-media thickness (cIMT) in an unselected, genetically confirmed cohort of adult RTHβ patients (n = 27-77) and compared these with measurements in healthy subjects (up to n = 100) and thyrotoxic patients (n = 40). Results Resistance to thyroid hormone beta (RTHβ) patients exhibited higher LDL-C (P = 0.008) and TG (P = 0.002) and lower HDL-C concentrations (P = 0.015 × 10–2) than control subjects, with LDL-C being higher than in thyrotoxic patients with comparable hyperthyroxinemia. Proprotein convertase subtilisin/kexin 9 (P = 0.002) and apolipoprotein B (P = 0.0009) levels were reduced in thyrotoxic patients but not lower in RTHβ patients or control subjects. Intrahepatic lipid (P = 0.02 × 10–4), IMCL (P = 0.002), HOMA-IR (P = 0.01 × 10–2), and NEFA (P = 0.04 × 10–6) were significantly higher in RTHβ patients than control subjects. Flow-mediated dilatation was increased (P = 0.04) but cIMT (P = 0.71), PWV P = 0.81), and AIx (P = 0.95) were unaltered in RTHβ patients. Conclusions We have documented mixed dyslipidemia with hepatic and IMCL accumulation in RTHβ, suggesting that surveillance for these metabolic abnormalities is warranted. How they combine with enhanced endothelial function and unaltered vessel wall thickness and compliance to determine overall cardiometabolic risk in this disorder remains to be defined.

scholarly journals Influences of Recreational Tennis-Playing Exercise Time on Cardiometabolic Health Parameters in Healthy Elderly: The ExAMIN AGE Study

2021 ◽  
Vol 18 (3) ◽  
pp. 1255
Author(s):  
Hsiao-Han Chao ◽  
Yi-Hung Liao ◽  
Chun-Chung Chou
Keyword(s):  
Insulin Resistance ◽  
Arterial Stiffness ◽  
Ankle Brachial Index ◽  
Density Lipoprotein ◽  
Activity Level ◽  
Lipoprotein Cholesterol ◽  
Cardiometabolic Health ◽  
Model Assessment ◽  
Healthy Elderly ◽  
Metabolic Biomarkers

Background: Aging and chronic degeneration are the primary threats to cardiometabolic health in elderly populations. Regular appropriate exercise would benefit the advanced aging population. Purpose: This study investigates whether the degree of weekly tennis participation exhibits differences in primary cardiometabolic parameters, including arterial stiffness, inflammation, and metabolic biomarkers in elderly tennis players. Methods: One hundred thirty-five long-term participants in elder tennis (>50 years old) were initially screened. Twenty-six eligible and voluntary subjects were divided into high tennis time group (HT) (14 ± 1.3 h/week) and low tennis time group (LT) (4.5 ± 0.7 h/week) by stratification analysis based on the amount of tennis playing activity time. The brachial-ankle pulse wave velocity (baPWV), blood pressure, ankle-brachial index (ABI), blood metabolic biomarkers, and insulin resistance were measured to compare the difference between HT and LT groups. Results: The baPWV was significantly lower in the HT group than that in the LT group (1283.92 ± 37.01 vs. 1403.69 ± 53.71 cm/s, p < 0.05). We also found that the HT insulin-resistant homeostasis model assessment (HOMA-IR) was significantly lower than that of LT (1.41 ± 0.11 vs. 2.27 ± 0.48 μIU/mL, p < 0.05). However, the blood lipid biomarkers (glucose, cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglyceride) were not statistical different between HT and LT groups (p > 0.05). Conclusion: We demonstrated that under the condition of similar daily physical activity level, elderly with a higher time of tennis-playing (HT group) exhibited relatively lower arterial stiffness (lower PWV) and lower insulin resistance compared to those with lower time tennis-playing (LT).

Correlation of P-wave dispersion with insulin sensitivity in obese adolescents

2016 ◽  
Vol 27 (2) ◽  
pp. 229-235 ◽  
Author(s):  
Ahmet Sert ◽  
Eyup Aslan ◽  
Muammer Buyukınan ◽  
Ozgur Pirgon
Keyword(s):  
Insulin Resistance ◽  
Regression Analysis ◽  
Left Atrial ◽  
Density Lipoprotein ◽  
Wave Dispersion ◽  
P Wave ◽  
Lipoprotein Cholesterol ◽  
Model Assessment ◽  
P Wave Dispersion ◽  
Obese Adolescents

AbstractBackgroundP-wave dispersion is a new and simple electrocardiographic marker that has been reported to be associated with inhomogeneous and discontinuous propagation of sinus impulses. In the present study, we evaluated P-wave dispersion in obese adolescents and investigated the relationship between P-wave dispersion, cardiovascular risk factors, and echocardiographic parameters.MethodsWe carried out a case–control study comparing 150 obese adolescents and 50 healthy controls. Maximum and minimum P-wave durations were measured using a 12-lead surface electrocardiogram, and P-wave dispersion was calculated as the difference between these two measures. Echocardiographic examination was also performed for each subject. Multivariate linear regression analysis with stepwise variable selection was used to evaluate parameters associated with increased P-wave dispersion in obese subjects.ResultsMaximum P-wave duration and P-wave dispersion were significantly higher in obese adolescents than control subjects (143±19 ms versus 117±20 ms and 49±15 ms versus 29±9 ms, p<0.0001 for both). P-wave dispersion was positively correlated with body mass index, waist and hip circumferences, systolic and diastolic blood pressures, total cholesterol, serum levels of low-density lipoprotein cholesterol, triglycerides, glucose, and insulin, homoeostasis model assessment for insulin resistance score, left ventricular mass, and left atrial dimension. P-wave dispersion was negatively correlated with high-density lipoprotein cholesterol levels. By multiple stepwise regression analysis, left atrial dimension (β: 0.252, p=0.008) and homoeostasis model assessment for insulin resistance (β: 0.205; p=0.009) were independently associated with increased P-wave dispersion in obese adolescents.ConclusionsInsulin resistance is a significant, independent predictor of P-wave dispersion in obese adolescents.

LLF580, an FGF21 Analog, Reduces Triglycerides and Hepatic Fat in Obese Adults With Modest Hypertriglyceridemia

2021 ◽  
Author(s):  
Daniel J Rader ◽  
Eleftheria Maratos-Flier ◽  
Amanda Nguyen ◽  
Doug Hom ◽  
Michael Ferriere ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Substantial Reduction ◽  
Density Lipoprotein ◽  
The United States ◽  
Lipoprotein Cholesterol ◽  
Liver Fat ◽  
Fibroblast Growth Factor 21 ◽  
Type Iii Collagen ◽  
Model Assessment ◽  
Hepatic Fat

Abstract Purpose To evaluate the safety and potential efficacy of LLF580, a genetically engineered variant of human fibroblast growth factor-21, for triglyceride lowering, weight loss, and hepatic fat reduction. Methods A multicenter, double-blind, parallel design trial in obese, mildly hypertriglyceridemic adults randomized (1:1) to LLF580 300 mg or placebo subcutaneously every 4 weeks for 3 doses. Results Of 64 randomized study participants, 61 (mean ± SD: age 45 ± 11 years, 49% male, 80/15/5% Caucasian/African American/other, body mass index 36.1 ± 3.8 kg/m2) received LLF580 (n = 30) or placebo (n = 31) at 7 research sites in the United States. LLF580 lowered serum triglycerides by 54% (least square mean placebo adjusted change from baseline), total cholesterol 7%, low-density lipoprotein cholesterol 12%, and increased high-density lipoprotein cholesterol 36% compared with placebo (all P &lt; 0.001) over 12 weeks. Substantial reduction of liver fat of 52% over placebo (P &lt; 0.001) was also demonstrated in the setting of improved liver function tests including alanine aminotransferase, aspartate aminotransferase, and alkaline phosphatase, the composite enhanced liver fibrosis score, and N-terminal type III collagen propeptide (all P &lt; 0.05). Insulin and C-peptide levels and insulin resistance by homeostatic model assessment for insulin resistance were all lower, and adiponectin higher with LLF580 treatment compared with placebo, whereas fasting glucose and glycated hemoglobin were unchanged. Reductions in biomarkers of bone formation without differences in markers of bone resorption were observed. LLF580 was generally safe and well tolerated, except for higher incidence of generally mild to moderate gastrointestinal adverse effects. Conclusions In obese, mildly hypertriglyceridemic adults, LLF580 was generally safe and demonstrated beneficial effects on serum lipids, liver fat, and biomarkers of liver injury, suggesting it may be effective for treatment of select metabolic disorders including hypertriglyceridemia and nonalcoholic fatty liver disease. Assessments of longer term safety and efficacy are warranted. ClinicalTrials.gov Identifier NCT03466203

scholarly journals The effect of certolizumab treatment on insulin resistance, lipid parameters and cardiovascular risk in patients with ankylosing spondylitis

2021 ◽  
Author(s):  
hasan göğebakan ◽  
gözde yıldırım cetin
Keyword(s):  
Insulin Resistance ◽  
Ankylosing Spondylitis ◽  
Insulin Sensitivity ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Atherogenic Index ◽  
Model Assessment ◽  
Framingham Risk ◽  
Significant Change ◽  
Lipid Parameters

Aims: To evaluate the effects of certolizumab treatment on insulin resistance (IR), lipid parameters, and cardiovascular (CV) risk in patients with ankylosing spondylitis (AS). Methods: This prospective study included 80 consecutive patients with AS (52 males, 28 females) and 74 control subjects (48 males, 26 feemales). The AS patients and control group were compared in respect of basal values. All AS patients with active disease were treated with certolizumab. Biochemical profiles were obtained before and after 24 weeks of certolizumab treatment. Homeostatic model assessment-insulin resistance (HOMA-IR) was used to measure IR and the quantitative insulin sensitivity control index (QUICKI) was used to measure insulin sensitivity. The Framingham equation was used to evaluate CV risk factors. Results: A statistically significant increase was determined in total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and triglyceride (TG) values after 24 weeks of certolizumab treatment. No statistically significant change was determined in the plasma atherogenic index (PAI) and low-density lipoprotein cholesterol (LDL-C) values. A statistically significant decrease was determined in HOMA-IR and an increase in QUICKI. When the Framingham risk scoring was compared with the baseline values, a statistically significant decrease in risk was found at week 24. Conclusions: Certolizumab therapy was associated with a significant increase in HDL-C, TC, and TG levels without any significant change in PAI and LDL-C, and was determined to increase insulin sensitivity and lower insulin resistance. There was also a significant reduction in SBP and 10-year Framingham risk scores at 24 weeks after the start of certolizumab therapy.

scholarly journals Circulating Omentin-1, Insulin Resistance and Lipid Profile Responses Following an Eight-week Aerobic Training Intervention Among Male Smokers 

2020 ◽  
Author(s):  
Seyed Maysam Mousavi ◽  
Ali Heidarianpour ◽  
Hassan Tavassoli
Keyword(s):  
Insulin Resistance ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Lipid Profile ◽  
Density Lipoprotein ◽  
Normal Weight ◽  
Aerobic Exercise Training ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Model Assessment

Abstract Background: Omentin-1 is a recently discovered circulating adipokine that plays a crucial role in modulating insulin resistance and diabetes. We investigated the effect of eight weeks of aerobic exercise training on serum omentin-1, insulin resistance and lipid profile in the smokers and non-smokers with normal weight. Methods: Nineteen male healthy and twenty male smokers were randomly assigned into healthy control group (C), healthy exercise group (E), control smoker group (CS) and exercise smoker group (ES). Exercise groups participated in an eight-week aerobic exercise training program (three times a week, 20-35 min per session at 55%-70% of maximum heart rate). Serum omentin-1 and insulin values were determined by ELISA and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR), glucose and lipid profile was measured before and after the intervention. Paired samples t-test, one-way analysis of variance (One-way ANOVA) and post-hoc Tukey test were applied to analyze the data (p<0.05).Results: Aerobic exercise improved both serum omentin-1 and high lipoprotein cholesterol (HDL-C) in the exercise groups (p<0.05). Also, Exercise training reduced insulin, blood sugar, HOMA-IR, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) levels (p<0.05). Omentin-1 was significantly correlated with insulin (r=-0.40, P=0.01), HOMA-IR (r=-0.38, P=0.04), TG (r=-0.40, P=0.01), TC (r=-0.49, P=0.02), LDL-C (r=-0.70, P=0.02) and HDL-C (r=0.55, P=0.03).Conclusion: The findings suggest that aerobic exercise-induced changes in omentin-1 in exercise trained smokers may be associated with the beneficial effects of exercise on reduced insulin resistance and lipid profile.

Serum uric acid is associated with metabolic risk factors for cardiovascular disease in the Uygur population

2009 ◽  
Vol 34 (6) ◽  
pp. 1032-1039 ◽  
Author(s):  
Nan F. Li ◽  
Hong M. Wang ◽  
Jin Yang ◽  
Ling Zhou ◽  
Xiao G. Yao ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Blood Pressure ◽  
Uric Acid ◽  
Serum Uric Acid ◽  
Fasting Blood Glucose ◽  
Density Lipoprotein ◽  
Resistance Index ◽  
Lipoprotein Cholesterol ◽  
Model Assessment

The prevalence of hyperuricemia is low in Uygurs, who have a high prevalence of cardiovascular risk factors such as hypertension, overweight–obesity, dyslipidemia, hyperglycemia, and insulin resistance (IR). This study sought to investigate the relationships between serum uric acid (UA) and these risk factors in this population. A cross-sectional study was conducted in Uygurs (859 males, 1268 females) aged 20 to 70 years. Demographic data, systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index (BMI), and fasting and postprandial blood were obtained, and biological measurements were determined. The mean of BMI, SBP, DBP, total cholesterol, high-density lipoprotein cholesterol (HDL-c), low-density lipoprotein cholesterol (LDL-c), triglycerides, fasting blood glucose, fasting insulin, and homeostasis model assessment insulin resistance index (HOMA-IR), and the prevalence of hypertension, IR, hyperglycemia, overweight–obesity, hypercholesteremia, hyper-LDL-c, and hypertriglyceridemia increased with UA but the prevalence of hypo-HDL-c decreased (p < 0.05). Logistic regression analysis showed that the odds ratios for IR, overweight–obesity, hypercholesteremia, hyper-LDL-c, and hypertriglyceridemia against the lowest UA group increased but decreased for hypo-HDL-c (p < 0.05). The UA in the hypo-HDL-c group was lower than that of the controls; the prevalence of hypo-HDL-c in hyperuricemia subjects was lower than in those with normal UA (p < 0.05). But the opposite results were observed between overweight–obesity, hyperglycemia, IR, hypercholesteremia, hypertriglyceridemia, and hyper-LDL-c and correspondence controls, respectively (p < 0.05). In Uygur, elevated UA is associated with overweight–obesity, hypercholesteremia, hyper-LDL-c, hypertriglyceridemia, hyperglycemia, and IR. The HDL-c level significantly increases with UA, whereas the prevalence of hypo-HDL-c decreases. Further studies are needed to clarify why UA is positively correlated to HDL-c.

scholarly journals Influence of Biochemical and Anthropometric Factors on the Presence of Insulin Resistance in Adolescents

2016 ◽  
Vol 18 (5) ◽  
pp. 541-548 ◽  
Author(s):  
Emilio González-Jiménez ◽  
Jacqueline Schmidt-RioValle ◽  
Miguel A. Montero-Alonso ◽  
Cristina Padez ◽  
Carmen J. García-García ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Body Fat ◽  
Glycosylated Hemoglobin ◽  
Multivariate Logistic Regression Analysis ◽  
Density Lipoprotein ◽  
Fat Content ◽  
Model Assessment ◽  
Cross Sectional ◽  
Nonesterified Fatty Acids ◽  
Body Fat Content

Background:Insulin resistance plays a determinant role in the development of metabolic syndrome in adolescents. The objective of the present study was to determine the influence of factors commonly associated with insulin resistance in a sample of adolescents.Methods:This cross-sectional study included 976 adolescents from southeast Spain. Anthropometric and biochemical measurements were performed, and insulin resistance was assessed using the homeostasis model assessment–insulin resistance (HOMA-IR).Results:Subjects with abnormal HOMA-IR values had significantly higher body mass index (BMI), body fat content, waist circumference, and systolic blood pressure (BP) than those with normal values. Furthermore, levels of glucose, insulin, glycosylated hemoglobin, total cholesterol, triglycerides, low-density lipoprotein-cholesterol, homocysteine, nonesterified fatty acids, and ceruloplasmin were higher in subjects with abnormal HOMA-IR values. Multivariate logistic regression analysis showed the highest odds ratio ( OR) for BMI and that combinations of BMI with body fat content or systolic BP can increase the risk of insulin resistance 7-fold.Discussion:Anthropometric indicators have different levels of influence on the risk of insulin resistance in adolescents, and a combination of two of these indicators is enough to increase the risk 7-fold. Since the highest OR was observed for BMI, the greatest effort should be directed to reducing this parameter in adolescents. An adequate understanding by nursing personnel of factors associated with insulin resistance is a key factor in the prevention of this pathophysiological condition and its complications in adolescents.

Association between the triglyceride to high-density lipoprotein cholesterol ratio and insulin resistance in Korean adolescents: a nationwide population-based study

2016 ◽  
Vol 0 (0) ◽  
Author(s):  
Jae-Min Park ◽  
Jee-Yon Lee ◽  
Jae June Dong ◽  
Duk-Chul Lee ◽  
Yong-Jae Lee
Keyword(s):  
Insulin Resistance ◽  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Surrogate Marker ◽  
Density Lipoprotein ◽  
High Density ◽  
Lipoprotein Cholesterol ◽  
Model Assessment ◽  
Cholesterol Ratio ◽  
Korean Adolescents

AbstractBackground:Studies have suggested the triglyceride to high-density lipoprotein cholesterol ratio (TG/HDL-C) as a surrogate marker of insulin resistance. However, few studies have examined the association between TG/HDL-C and insulin resistance in the general adolescent population. This study aimed to examine the association between TG/HDL-C and insulin resistance in a nationally representative sample of Korean adolescents.Methods:A total of 2649 participants aged 12–18 years were selected from the 2007 to 2010 Korean National Health and Nutrition Examination Survey (KNHANES). Insulin resistance was defined as the homeostatic model assessment of insulin resistance (HOMA-IR) values greater than the 80th percentile.Results:The mean values of most cardiometabolic variables increased proportionally with TG/HDL-C quartiles. Compared to individuals in the lowest TG/HDL-C quartile, the odds ratio for insulin resistance for individuals in the highest quartile was 2.91 in boys and 2.38 in girls after adjusting for confounding variables.Conclusions:This study suggests that TG/HDL-C could be a convenient marker for identifying Korean adolescents with insulin resistance.

scholarly journals Aerobic Exercise Training Effects on Omentin-1, Insulin Resistance and Lipid Profile Among Male Smokers

2020 ◽  
Author(s):  
Seyed Maysam Mousavi ◽  
Ali Heidarianpour ◽  
Hassan Tavassoli
Keyword(s):  
Insulin Resistance ◽  
Exercise Training ◽  
Aerobic Exercise ◽  
Lipid Profile ◽  
Density Lipoprotein ◽  
Normal Weight ◽  
Aerobic Exercise Training ◽  
Lipoprotein Cholesterol ◽  
Control Group ◽  
Model Assessment

Abstract Background: Omentin-1 is a recently discovered circulating adipokine that plays a crucial role in modulating insulin resistance and diabetes. We investigated the effect of eight weeks of aerobic exercise training on serum omentin-1, insulin resistance and lipid profile in the smokers and non-smokers with normal weight. Methods: Nineteen male healthy and twenty male smokers were randomly assigned into healthy control group (C), healthy exercise group (E), control smoker group (CS) and exercise smoker group (ES). Exercise groups participated in an eight-week aerobic exercise training program (three times a week, 20-35 min per session at 55%-70% of maximum heart rate). Serum omentin-1 and insulin values were determined by ELISA and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR), glucose and lipid profile was measured before and after the intervention. Paired samples t-test, one-way analysis of variance (One-way ANOVA) and post-hoc Tukey test were applied to analyze the data (p<0.05).Results: Aerobic exercise improved both serum omentin-1 and high lipoprotein cholesterol (HDL-C) in the exercise groups (p<0.05). Also, Exercise training reduced insulin, blood sugar, HOMA-IR, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) levels (p<0.05). Omentin-1 was significantly correlated with insulin (r=-0.40, P=0.01), HOMA-IR (r=-0.38, P=0.04), TG (r=-0.40, P=0.01), TC (r=-0.49, P=0.02), LDL-C (r=-0.70, P=0.02) and HDL-C (r=0.55, P=0.03).Conclusion: The findings suggest that aerobic exercise-induced changes in omentin-1 in exercise trained smokers may be associated with the beneficial effects of exercise on reduced insulin resistance and lipid profile.

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