RT Journal Article
T1 Adipose Tissue LPL Methylation is Associated with Triglyceride Concentrations in the Metabolic Syndrome.
A1 Castellano-Castillo, Daniel
A1 Moreno-Indias, Isabel
A1 Fernández-García, José Carlos
A1 Alcaide-Torres, Juan
A1 Moreno-Santos, Inmaculada
A1 Ocaña, Luis
A1 Gluckman, Enrique
A1 Tinahones, Francisco
A1 Queipo-Ortuño, María Isabel
A1 Cardona, Fernando
AB DNA methylation is one of the epigenetic mechanisms that regulate gene expression. DNA methylation may be modified by environmental and nutritional factors. Thus, epigenetics could potentially provide a mechanism to explain the etiology of metabolic disorders, such as metabolic syndrome (MetS). The aim of this study was to analyze the level of DNA methylation of several lipoprotein lipase (LPL)-promoter-CpG dinucleotides in a CpG island region and relate this to the gene and protein expression levels in human visceral adipose tissue (VAT) from individuals with and without MetS. VAT samples were collected from laparoscopic surgical patients without and with MetS, and levels of LPL mRNA, LPL protein, and LPL DNA methylation were measured by qPCR, western blot, and pyrosequencing. Biochemical and anthropometric variables were analyzed. Individuals included in a subset underwent a dietary fat challenge test, and levels of postprandial triglycerides were determined. We found higher levels of DNA methylation in MetS patients but lower gene expression and protein levels. There was a negative association between LPL methylation and LPL gene expression. We found a positive association between LPL methylation status and abnormalities of the metabolic profile and basal and postprandial triglycerides, whereas LPL gene expression was negatively associated with these abnormalities. We demonstrate that LPL methylation may be influenced by the degree of metabolic disturbances and could be involved in triglyceride metabolism, promoting hypertriglyceridemia and subsequent associated disorders, such as MetS.
YR 2017
FD 2017-10-18
LK http://hdl.handle.net/10668/11696
UL http://hdl.handle.net/10668/11696
LA en
DS RISalud
RD Apr 8, 2025