ABSTRACT
Aim: Methylation of LDLR, PCSK9 and LDLRAP1 CpG sites was assessed in patients with familial hypercholesterolemia (FH). Methods: DNA methylation of was analyzed by pyrosequencing in 131 FH patients and 23 normolipidemic (NL) subjects. Results: LDLR, PCSK9 and LDLRP1 methylation was similar between FH patients positive (MD) and negative (non-MD) for pathogenic variants in FH-related genes. LDLR and PCSK9 methylation was higher in MD and non-MD groups than NL subjects (p < 0.05). LDLR, PCSK9 and LDLRAP1 methylation profiles were associated with clinical manifestations and cardiovascular events in FH patients (p < 0.05). Conclusion: Differential methylation of LDLR, PCSK9 and LDLRAP1 is associated with hypercholesterolemia and cardiovascular events. This methylation profile maybe useful as a biomarker and contribute to the management of FH.
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ABSTRACT
Objective: To evaluate the association of genetic polymorphisms of vitamin D transporter protein (DBPrs4588 and DBP-rs7041) and cytochrome P450-24A1 (CYP24A1-rs6013897) in patients with cirrhosis with or without hepatocellular carcinoma (HCC), including demographic/clinical/biochemical profiles. Methods: A total of 383 individuals were studied, considering the total group (TotalG) of patients with cirrhosis (TotalG: N = 158) with or without HCC, distributed into Group 1 (G1): cirrhosis and HCC; Group 2 (G2): isolated cirrhosis; and 225 individuals without hepatopathies (G3). Polymorphisms were analysed by real-time polymerase chain reaction. An alpha error of 5% was admitted. Results: CYP24A1-rs6013897 predominated the genotype with at least one polymorphic allele (_/T) in G1 (98.3%) versus G2 (88.8%; p = 0.0309). There was a moderate positive correlation between vitamin D and parathyroid hormone in patients (TotalG: R 2 = 0.3273). Smoking, alcoholism and diabetes mellitus (DM) stood out as independent factors for cirrhosis, as well as for cirrhosis with HCC, except for smoking, adding, in this case, advanced age, male gender, polymorphic allele of CYP24A1-rs6013897, viral hepatitis and high levels of serum gamma-glutamyl transferase (GGT), alpha-fetoprotein (AFP) and creatinine. An increase in survival was observed in the presence of the polymorphic allele of DBP-rs7041 (p = 0.0282). Conclusion: CYP24A1-rs6013897 is associated with cirrhosis and HCC as a predictor, while DBP-rs4588 is associated with reduced vitamin D, and DBP-rs7041 provides increased survival, suggesting a protective characteristic. Advanced age, alcoholism, DM, viral hepatitis and high levels of GGT, AFP and creatinine are also confirmed as predictors of HCC and cirrhosis, while smoking, alcoholism and DM for isolated cirrhosis only.
ABSTRACT
Our study aimed to associate IL-1ß and IL-1RN polymorphisms with AD disease in comparison with elderly control group from São Paulo - Brazil. We genotyped 199 Alzheimer's disease (AD) patients, 165 elderly control and 122 young control samples, concerning VNTR (IL-1RN) and -511C>T and -31T>C (IL-1ß) polymorphisms. Our findings revealed that -511C/-31T/2-repetitions VNTR haplotype had a protective effect for AD when compared to EC (p=0.005), whereas -511C/-31C/1-repetition VNTR haplotype was associated as a risk factor for AD (p=0.021). Taken together, we may suggest that there is a relevant role of IL-1 genes cluster in AD pathogenesis in this Brazilian population.
Subject(s)
Alzheimer Disease/genetics , Genetic Predisposition to Disease , Haplotypes/genetics , Interleukin 1 Receptor Antagonist Protein/genetics , Interleukin-1beta/genetics , Polymorphism, Genetic/genetics , Aged , Aged, 80 and over , Brazil , Female , Humans , Male , Middle Aged , Minisatellite Repeats/geneticsABSTRACT
Foram estudados 15 casos de mixomas cadíacos (nove mulheres e seis homens) com faixa etária variando entre 20 e 67 anos de idade. A localizacao de tal entidade, en 12 dos pacientes, foi no átrio esquerdo, dois no átrio direito e um na válvula aórtica. Foram analisados os achados anatomopatológicos. Todos os 15 casos foram obtidos através de procedimientos cirúrgicos e um deles apresentou recidiva.
