Insulin resistance associated with dyslipidemia enhances cardiovascular risk. Several atherogenic indexes have been suggested to give more precise information about the risk. The aim of our study was to estimate, which atherogenic index correlates better with parameters of insulin resistance. Furthermore, we compared the parameters of lipid metabolism and insulin resistance between smokers and non-smokers. In our cross-sectional study we enrolled 729 patients with dyslipidemia which were divided into two groups - non-smokers (586) and smokers (143). We measured lipid profile, parameters of insulin resistance (fasting glycemia, insulin, HOMA-IR, C-peptide, proinsulin) and calculated atherogenic indexes - atherogenic index of plasma (log (TAG/HDL-C), AIP), ApoB/ApoA1 index and nonHDL-C. AIP was found out to show stronger correlations with parameters of insulin resistance (p<0.001, correlation coefficients ranging between 0.457 and 0.243) than other indexes (ApoB/ApoA1 or nonHDL cholesterol). AIP correlated with parameters of insulin resistance both in smokers and nonsmokers, but after adjustment (for age, body mass index, waist circumference) persisting only in non-smokers. Smokers had a wider waist circumference and a proatherogenic lipid profile. Smoking increases the risk of developing metabolic syndrome. AIP can be used in daily praxis for predicting insulin resistance in patients with dyslipidemia, predominantly in non-smokers., L'. Cibičková, D. Karásek, K. Langová, H. Vaverková, J. Orság, J. Lukeš, D. Novotný., and Obsahuje bibliografii
Cíl: Gen pro adiponektin bývá označován jako kandidátní gen inzulinové rezistence (IR). V naší práci byl sledován možný vztah mezi jednonukleotidovým polymorfi smem (SNP) +276 G > T a markery inzulinové rezistence včetně lipidového a lipoproteinového profi lu u 355 dyslipidemických pacientů lipidové ambulance III. interní kliniky Fakultní nemocnice Olomouc a jejich prvostupňových příbuzných. Metody: SNP genu pro adiponektin byl detekován metodou polymerázové řetězové reakce v reálném čase s hybridizačními fl uorescenčními sondami. Rozdíly mezi genotypy ve spojitých proměnných byly analyzovány metodou ANOVA (upraveno na věk, pohlaví a obvod pasu). Výsledky: Nosiči genotypu GG měli významně vyšší hladiny celkového cholesterolu (GG: 6,54 ± 1,74 mmol/l, GT: 6,18 ± 1,45 mmol/l, TT: 6,25 ± 1,64 mmol/l, p < 0,05) a LDL cholesterolu (GG: 4,12 ± 1,49 mmol/l, GT: 3,78 ± 1,31 mmol/l, TT: 3,70 ± 1,34 mmol/l, p < 0,05) než jedinci s alelou T. Přítomnost alely T na pozici 276 byla u heterozygotů naopak spojena s vyšší koncentrací inhibitoru aktivátoru plasminogenu 1 (PAI-1) (GG: 71,50 ± 41,0 μg/l, GT: 81,0 ± 38,7 μg/l, TT: 70,14 ± 44,4 μg/l, p < 0,05). Závěr: Ve studii byla zjištěna slabá asociace heterozygotů-nosičů T alely polymorfi smu +276 G > T genu pro adiponektin a jedním markerem inzulinové rezistence, avšak nebyl nalezen vztah k sérovému adiponektinu, inzulinu, body mass indexu a dyslipidemickým fenotypům., Aim: The adiponectin gene has been proposed as a potential candidate gene for IR. We analysed possible relationship between +276 G > T SNP and IR markers together with lipid and lipoprotein profi les in 355 Czech dyslipidemic patients of Lipid Center, University Hospital Olomouc, and their fi rst degree relatives. Methods: The +276 G > T SNP of adiponectin gene was detected by real time PCR method with hybridization fl uorescence probes in LightCycler. Between-genotype differences in continuous variables were analyzed by ANOVA after adjustment for age, sex and waist circumference. Results: Subjects with GG genotype were associated with higher total cholesterol (GG: 6.54 ± 1.74 mmol/l, GT: 6.18 ± 1.45 mmol/l, TT: 6.25 ± 1.64 mmol/l, p < 0.05) and LDL cholesterol (GG: 4.12 ± 1.49 mmol/l, GT: 3.78 ± 1.31 mmol/l, TT: 3.70 ± 1.34 mmol/l, p < 0.05) in comparison with T allele carriers. On the contrary, the presence of T allele in position 276 in heterozygotes was associated with higher levels of plasma inhibitor of activator of plasminogen 1 (PAI-1) (GG: 71.50 ± 41.0 μg/l, GT: 81.0 ± 38.7 μg/l, TT: 70.14 ± 44.4 μg/l, p < 0.05). Conclusion: In this study, the poor association between carriers- heterozygotes of T alelle of +276 G > T polymorphism of gene for adiponectin and one marker of insulin resistance was found. However, no relationship was detected with plasma adiponectin, insulin, body mass index and dyslipidemic phenotypes., Novotný Dalibor, Vaverková H., Karásek D., Halenka M., Lukeš J., Slavík L., Bartková M., Schneiderka P., and Lit.: 11