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Background: There is a need for simple surrogate estimates of insulin sensitivity in epidemiological studies of obese youth because the hyperinsulinemic-euglycemic clamp is not feasible on a large scale.
Objective: (i) To examine the triglyceride glucose (TyG) index (Ln[fasting triglycerides (mg/dL) × fasting glucose (mg/dL)/2]) and its relationship to in vivo insulin sensitivity in obese adolescents (OB) along the spectrum of glucose tolerance and (ii) to compare TyG index with triglyceride/high-density lipoprotein TG/HDL and 1/fasting insulin (1/IF ), other surrogates of insulin sensitivity.
Patients And Design: Cross-sectional data in 225 OB with normal glucose tolerance (NGT), prediabetes (preDM), and type 2 diabetes (T2DM) who had a 3-h hyperinsulinemic-euglycemic clamp and fasting lipid measurement.
Results: Insulin-stimulated glucose disposal (Rd) declined significantly across the glycemic groups from OB-NGT to OB-preDM to OB-T2DM with a corresponding increase in TyG index (8.3 ± 0.5, 8.6 ± 0.5, 8.9 ± 0.6, p < 0.0001). The correlation of TyG index to Rd was -0.419 (p < 0.0001). The optimal TyG index for diagnosis of insulin resistance was 8.52 [receiver operating characteristic-area under the ROC curves (ROC-AUC) 0.750, p < 0.0001]. The ROC-AUC for 1/IF was 0.836. In multiple regression analysis, 64.8% of the variance in Rd was explained by TyG index, 1/IF , body mass index (BMI) z-score, glycemic group, and sex.
Conclusion: The TyG index affords an easily and widely available simple laboratory method as a surrogate estimate of insulin sensitivity that could be used repeatedly in large-scale observational and/or interventional cohorts of OB. Although not superior to 1/IF , TyG index offers the advantage of having a standardized method of measuring triglyceride and glucose, which is not the case for insulin assays.
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http://dx.doi.org/10.1111/pedi.12303 | DOI Listing |
Menopause
September 2025
Department of Anesthesiology and Perioperative Medicine, Medical College of Georgia at Augusta University, Augusta, GA.
Objective: To evaluate depression in postmenopausal women and to explore the relationship between age at menopause, hormone therapy, and depression, while also identifying potential mediators that may explain these associations.
Methods: This cross-sectional study analyzed data from National Health and Nutrition Examination Survey (NHANES) (2005-2020) for women older than 60 years who completed the Patient Health Questionnaire 9 (PHQ-9) depression questionnaire (n=7,027). Exposures included age at menopause and self-reported hormone therapy; the outcome was depression severity (PHQ-9 ≥10).
PLoS One
September 2025
Internal Medicine Department, Tlemcen University Hospital, Tlemcen, Algeria.
Background: Visceral adipose tissue (VAT) is associated with several cardiometabolic risk factors, particularly metabolic syndrome and insulin resistance. Reference values for VAT vary across populations, genders, and ages. Data on visceral fat in the Algerian population are lacking.
View Article and Find Full Text PDFPLoS One
September 2025
Neck-Shoulder and Lumbocrural Pain Hospital of Shandong First Medical University, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.
Background: Metabolic syndrome (MetS) and sarcopenia are major global public health problems, and their coexistence significantly increases the risk of death. In recent years, this trend has become increasingly prominent in younger populations, posing a major public health challenge. Numerous studies have regarded reduced muscle mass as a reliable indicator for identifying pre-sarcopenia.
View Article and Find Full Text PDFJ Int Assoc Provid AIDS Care
September 2025
Department of Internal medicine, School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
BackgroundDolutegravir (DTG)-based antiretroviral treatment is now the recommended regimen because of its high efficacy and fewer adverse effects. Nonetheless, hyperglycemia as adverse effect of DTG was reported in few clinical observations.MethodsA case-control study was carried out among DTG-based antiretroviral therapy (ART) users during the study period.
View Article and Find Full Text PDFXenobiotica
September 2025
Department of Pharmacy, Binhai County People's Hospital, Yancheng 224500, China.
To study the effects of calycosin on palmitic acid-induced HepG2 cells, as well as the potential mechanisms of action. Potential targets of calycosin for the alleviation of insulin resistance were predicted by network pharmacology. Glucose concentration in the culture medium was determined by the GOD-POD method.
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