title: Postprandial lipemia as a risk factor for cardiovascular disease in patients with hypothyroidism.
abstract: Postprandial lipoprotein metabolism is suggested to play a role in the pathogenesis of atherosclerosis. In this study, we investigated postprandial lipemia and its relationship to cardiovascular risk factors in patients with overt and subclinical hypothyroidism. Twenty-nine female patients with TSH levels greater than 5 microIU/mL and 12 euthyroid control female subjects were included in the study. Fifteen patients had subclinical hypothyroidism and 14 had overt hypothyroidism. All subjects underwent an oral lipid tolerance test. If triglyceride levels increased by 80% or more, subjects were considered postprandial lipemia positive. Control, overt hypothyroid, and subclinical hypothyroid groups were not statistically different with respect to anthropometric measurements, fasting blood C-reactive protein, uric acid, homocysteine, glucose, insulin, lipoprotein (a), apolipoprotein B levels, and homeostasis model assessment index. Fasting triglyceride levels correlated positively with TSH levels. Postprandial lipemia frequency was higher in overt hypothyroid subjects than in the control group. The subclinical hypothyroid group did not differ from the hypothyroid group with respect to postprandial lipemia frequency. In subjects with TSH levels higher than 5 microIU/mL, PPL risk was increased sevenfold. The results of this study show that postprandial triglyceride metabolism is affected in hypothyroidism.
authors.affiliation: Department of Endocrinology and Metabolic Diseases, Baskent University Faculty of Medicine, Turkey.
authors.forename: Nedret
authors.initials: N
authors.lastname: Tanaci
authors.forename: Derun Taner
authors.initials: DT
authors.lastname: Ertugrul
authors.forename: Mustafa
authors.initials: M
authors.lastname: Sahin
authors.forename: Muammer
authors.initials: M
authors.lastname: Yucel
authors.forename: Irem
authors.initials: I
authors.lastname: Olcay
authors.forename: Nilgun Guvener
authors.initials: NG
authors.lastname: Demirag
authors.forename: Alptekin
authors.initials: A
authors.lastname: Gursoy
mesh_terms: D001786:Blood Glucose / Q000032:analysis; D015992:Body Mass Index; D002097:C-Reactive Protein / Q000032:analysis; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000209:etiology*; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015243:Cholesterol, VLDL / Q000097:blood; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006710:Homocysteine / Q000097:blood; D006801:Humans; D007037:Hypothyroidism / Q000097:blood* / Q000150:complications*; D007328:Insulin / Q000097:blood; D008055:Lipids / Q000097:blood*; D008875:Middle Aged; D019518:Postprandial Period; D012307:Risk Factors; D013972:Thyrotropin / Q000097:blood; D014280:Triglycerides / Q000097:blood; D014527:Uric Acid / Q000097:blood
chemical_list: D001786:Blood Glucose; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D015243:Cholesterol, VLDL; D007328:Insulin; D008055:Lipids; D014280:Triglycerides; D006710:Homocysteine; D014527:Uric Acid; D013972:Thyrotropin; D002097:C-Reactive Protein; D002784:Cholesterol