The aim of this prospective, follow-up study was to examine the influence of overt hypothyroidism (OHP) and subclinical (SHP), before and during thyroxine (T4) treatment, on lipoprotein(a) [Lp(a)], other lipoproteins, and apolipoproteins. Twenty-four patients (17 females, 7 males) with OHP, aged 54 +/- 11.1 years (group A) and 23 patients (females) with SHP aged 50.1 +/- 13.2 years (group B) were evaluated and compared to 34 and 38 controls, respectively. All patients received T4 therapy in a stepwise fashion until euthyroidism was reached. Thyrotropin (TSH), free thyroxine (FT4), and total triiodothyronine (TT3) levels were measured before T4 therapy and repeatedly every 4 weeks after the initiation of treatment until the euthyroid state was reached. Levels of Lp(a), total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDLc), high-density lipoprotein cholesterol (HDLc), apolipoprotein A1 (apoA1) and apolipoprotein B (apoB) were measured before and 4 months after the achievement of euthyroidism. Additionally, body mass index (BMI) was also evaluated. We found that in OHP patients, levels of TC, LDLc, and apoB were elevated before treatment and decreased significantly after the return to the euthyroid state. BMI and levels of triglycerides also decreased significantly; Lp(a) was higher in OHP patients in comparison with controls and decreased significantly by 14.56% (25.29% in men and 10.34% in women) during T4 treatment. In SHP patients, levels of all common lipoproteins, apolipoproteins, and Lp(a) did not differ significantly from controls before treatment and did not change after the euthyroid stage was reached. It is concluded that in overt hypothyroidism, Lp(a) levels and most of the lipoproteins were elevated before treatment and decreased significantly. In subclinical hypothyroidism, lipoproteins and Lp(a) levels were normal at baseline and did not change during treatment.
ObJEctIVE: the aim of this study was to evaluate the levels of adipose tissue related hormones, cytokines, and antioxidative substances in obese women before and after intervention with diet alone or with diet plus an inhibitor of gastrointestinental lipase-orlistat. DEsIGN: seventy-one obese women of childbearing age were included in the study and were randomly assigned into two groups according to the type of intervention: group A1 (n=35) included women who received orlistat as well as a hypocaloric diet, and group A2 (n=36) included women who were only on hypocaloric diet. the intervention period lasted 6 months. Anthropometric parameters, such as body Weight (bW), body Mass Index (bMI), Waist circumference (Wc), and %body fat (bF) were recorded. Insulin, leptin, resistin, interleukin-6 (IL-6), insulin like growth factor 1 (IGF-1), tumor necrosis factor α (TNFα), adiponectin, hsC-reactive protein (CRP), glutathione peroxidase, and isoprostane were determined by appropriate methodology prior to and following the 6-month intervention period. Insulin resistance was measured using the homeostasis model assessment index (HOMA-Ir). All participants had normal glucose tolerance. rEsULts: In both groups bMI values were lower after intervention and all measured parameters were ameliorated. A statistically significant difference was found between group A1 (orlistat plus diet) and group A2 (diet only) with regard to the levels of triglycerides, CRP, TNF-α, IGF-1, and isoprostane, even after correcting for weight loss. cONcLUsION: Hypocaloric diet plus orlistat in obese women is superior to diet alone with regard to the changes observed in adipokines, CRP, TNFα, triglycerides, IGF-1, and oxidative stress following intervention.
OBJECTIVE: To evaluate the levels of Interleukin-6 (IL-6), glutathione peroxidase and isoprostane in obese women and their association with markers of cardiovascular risk factors before and after weight loss. DESIGN: 36 healthy obese women of reproductive age (group A: age (mean ±SD) 35.4 ± 9.2 years, Body Mass Index (BMI) 38.5±7 kg/m 2 ) and 30 healthy, normal weight women (group B: age mean ±SD 34.9±7.4y., BMI 24±1.1 kg/m 2 ) were included in the study. Glucose tolerance was normal in all participating women. Il-6, glutathione peroxidase and isoprostane, C-Reactive Protein (CRP), insulin, fasting plasma glucose, HOMA-IR as well as the lipid profile were evaluated. Body weight, BMI, Waist to Hip ratio (W/H) ratio, Waist Circumference (WC), %free fat mass and the %fat mass were also measured. A hypocaloric diet was prescribed for the obese women and all participants were re-examined after six months. RESULTS: In obese women after weight loss, anthropometric obesity markers (BMI, W/H ratio), %fat, lipid profile, insulin levels and inflamation indices such as IL-6 and CRP, the oxidative stress index isoprostane, as well as glutathione peroxidase were significantly ameliorated. The levels of serum glutathione peroxidase activity were negatively correlated with IL-6 levels and were significantly increased after weight reduction. In obese women there was an association between IL-6 levels and the values of %fat, %free fat mass, insulin and HOMA-IR before and after weight loss. CONCLUSIONS: Weight loss is related to reduction of oxidative stress and inflammation; this beneficial effect could possibly be translated into reduction of cardiovascular risk in obese individuals.
The aim of this study was to investigate the prevalence of overweight, obesity and body mass index (BMI) distribution in people living in large territories of Greece, Serbia and Turkey. A cross-sectional multi-national epidemiological survey was designed on the basis of self-reported information on height and weight using the formula kg/m2. Overall, 20,329 individuals, aged 20-68 yrs, 8,973 males and 11,356 females, participated in the study. Of these, 4,032 were selected from northern Greece, 10,069 from southwest Turkey and 6,228 from central Serbia. More specifically, participants from northern Greece were recruited from central Macedonia, from Southwest Turkey from the Kayseri region and from central Serbia from the greater Belgrade area. Our results showed that 12.4% of the population studied was obese and 31.3% overweight. The corresponding figures for participants from Greece were 19.9% and 35.4%, from Turkey 12.0% and 30.9% and from Serbia 8.2% and 29.4%, respectively. Overall, male participants had a higher mean BMI than females. However, Greek females were more obese in comparison with males. The opposite was true of the other two countries. Finally, in both males and females mean BMI tended to increase with age up to 50-59 years, and declined slightly thereafter. In conclusion, the overall prevalence of obesity and overweight in the Balkan peninsula does not differ from that reported in other European countries. However, BMI values between different countries of the Balkan peninsula are fairly variable, Greece leading in the prevalence of obesity with Serbia having the lowest prevalence of obesity. The data from this survey underline the need for health intervention aimed at preventing obesity, especially in Greece.
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