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Atherogenic Indices and HDL Particle Size as Laboratory Parameters to Evaluate Cardiovascular Risk in the Presence of Dyslipidemia

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Journal of Biophysical Chemistry 2014年第2期5卷 24-32页

作者： Ana Paula C.Santos Marcos S.Vieira Debora F.Deus rogerio jorge bde oliveira Aleksandra T.Morikawa Roque Aras Ajax M.Atta Fabio D.Couto Raul C.Maranhao Ricardo D.Couto Clinical Biochemistry Laboratory Department of Clinical and Toxicological AnalysisFaculty of PharmacyFederal University of Bahia/UFBASalvadorBrazil Naval Hospital of Salvador Brazilian Marine ForcesSalvadorBrazil Lipid Metabolism Laboratory of the Heart Institute(InCor-Clinical Hospital of Medical School) Faculty of PharmacyUniversity of Sao Paulo/USPSao PauloBrazil Ana Neri Hospital SESAB and Federal University of Bahia/UFBA Faculty of MedicineSalvadorBrazil Laboratory of Research in Immunology(LAPIM) Department of Clinical and Toxicological AnalysisFaculty of PharmacyFederal University of Bahia/UFBASalvadorBrazil Laboratory of Molecular Biology and Genetics at Center of Agricultural Environmental and Biological Sciences(CCAAB-UFRB)Cruz das AlmasBrazil Faculty of Pharmaceutical Sciences Clinical Chemistry DepartmentUniversity of Sao Paulo/USPSao PauloBrazil Central Clinical Laboratory of Professor Edgar Santos University Hospital Federal University of Bahia/UFBASalvadorBrazil

Dyslipidemia may influence enzymes and transfer proteins needed to the lipoprotein particle remodeling. Calculated indices and evaluation of lipoprotein particle size have widely been used to predict cardiovascular risk. The aim of this study was to evaluate HDL particle size and LDL particle size estimate based on TG/HDL-C as well as apoB/apoA-I ratio as possible marker and atherogenic indices, respectively, of cardiovascular disease risk in the presence of dyslipidemia. We evaluated 100 individuals of both gender, without treatment with lipid-lowering drugs, 27 normolipidemic and 73 dyslipidemic, such as isolated hypercholesterolemia (n = 16), isolated hypertriglyceridemia (n = 17), low HDL-C (n = 26) and mixed dyslipidemia (n = 14). The HDL particle size did not differ between groups. The TG/HDL-C ratio was higher in groups with isolated hypertriglyceridemia (4.2 ± 1.5), low HDL-C (5.2 ± 3.1) and mixed dyslipidemia (5.3 ± 1.6). The apoB/apoA-I ratio was increased in all groups of dyslipidemia (apoB/apoA-I > 0.5) when compared to normolipidemic (apoB/apoA-I = 0.5, p < 0.001). There was a positive linear correlation between the TG/HDL-C ratio and the apoB/apoA-I ratio in low HDL-C group (r = 0.507, p = 0.008, Spearman). The results suggest that the evaluations of lipoproteins particles remodeling markers and the use of calculated indices may contribute to the evaluation of cardiovascular disease risk when dyslipidemia take place.

关键词： Dyslipidemia Atherogenic Indices Cardiovascular Risk

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Vertical stratification of bat assemblages in flooded and unflooded Amazonian forests

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Current Zoology 2010年第4期56卷 469-478页

作者： Maria Joo Ramos PEREIRA Joo Tiago MARQUES jorge M.PALMEIRIM Centro de Biologia Ambiental Departamento de Biologia Animal Faculdade de Ciências da Universidade de Lisboa Instituto de Desenvolvimento Sustentvel Mamirau

Tropical rainforests usually have multiple strata that results in a vertical stratification of ecological opportunities foranimals. We investigated if this stratification influences the way bats use the vertical space in flooded and unflooded forests of theCentral Amazon. Using mist-nets set in the canopy (17 to 35 m high) and in the understorey (0 to 3 m high) we sampled four sitesin upland unflooded forests (terra firme), three in forests seasonally flooded by nutrient-rich water (varzea), and three in forestsseasonally flooded by nutrient-poor water (igapo). Using rarefaction curves we found that species richness in the understorey andcanopy were very similar. An ordination analysis clearly separated the bat assemblages of the canopy from those of the understorey inboth flooded and unflooded habitats. Gleaning carnivores were clearly associated with the understorey, whereas frugivores wereabundant in both strata. Of the frugivores, Carollinae and some Stenodermatinae were understorey specialists, but several Stenodermatinaemostly used the canopy. The first group mainly includes species that, in general, feed on fruits of understorey shrubs,whereas the second group feed on figs and other canopy fruits. We conclude that vertical stratification in bat communities occurseven within forests with lower canopy heights, such as Amazonian seasonally flooded forests, and that the vertical distribution ofbat species is closely related to their diet and foraging behaviour.

关键词： Amazon Bats Chiroptera Vertical stratification Floodplain

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