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Lower epicardial adipose tissue adiponectin in patients with metabolic syndrome. 2011

E Teijeira-Fernandez, and S Eiras, and L Grigorian Shamagian, and A Salgado Somoza, and C Delgado, and J R Gonzalez-Juanatey
Department of Cardiology, Hospital Clínico Universitario, Santiago de Compostela, Spain. elvis.teijeira.fernandez@sergas.es

BACKGROUND Adiponectin is an anti-atherogenic insulin-sensitizer hormone whose plasma concentration is lower in patients with metabolic syndrome (MS). Visceral adiposity, including epicardial adipose tissue (EAT), is closely related to the development of MS and coronary artery disease (CAD). We sought to study whether EAT and subcutaneous adipose tissue (SAT) adiponectin mRNA levels are similar in patients with and without MS. METHODS EAT, SAT and blood samples were collected from patients undergoing elective cardiac surgery, for revascularization (n=19) or other procedures (n=27). Plasma adiponectin was measured using ELISA. mRNA was purified and adiponectin mRNA quantified by real time RT-PCR. RESULTS Mean (SD) age was 71.6 (9.6) years. Patients who met Adult Treatment Panel III MS criteria (n=29) presented lower plasma adiponectin concentrations (11.2 (7.4) vs. 19.6 (8.4) mg/l, P=0.004), lower EAT adiponectin mRNA (12.7 (3.0) vs. 15.1 (3.7) a.u., P=0.029) and similar SAT adiponectin mRNA levels (13.7 (4.2) vs. 15.6 (5.7) a.u., P=0.25) than those without MS. After adjusting for age, sex, CAD and heart failure, the association with MS remained statistically significant for plasma adiponectin (OR 0.862 (0.762-0.974)), was of borderline significance for EAT adiponectin mRNA (OR 0.796 (0.630-1.005)) and not significant for SAT adiponectin mRNA (OR 0.958 (0.818-1.122)). Patients in the lower quartiles of EAT adiponectin mRNA and plasma adiponectin presented a higher mean of components of the MS. CONCLUSIONS Subjects with MS present lower EAT adiponectin mRNA levels than those without MS, whereas SAT adiponectin mRNA levels do not seem to differ between both groups. EAT might be the link between MS and its atherothrombotic cardiac complications.

UI MeSH Term Description Entries
D008297 Male Males
D010496 Pericardium A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers. Epicardium,Fibrous Pericardium,Parietal Pericardium,Pericardial Cavity,Pericardial Space,Serous Pericardium,Visceral Pericardium,Cavities, Pericardial,Cavity, Pericardial,Pericardial Cavities,Pericardial Spaces,Pericardium, Fibrous,Pericardium, Parietal,Pericardium, Serous,Pericardium, Visceral,Pericardiums, Fibrous,Pericardiums, Serous,Serous Pericardiums,Space, Pericardial,Spaces, Pericardial
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000273 Adipose Tissue Specialized connective tissue composed of fat cells (ADIPOCYTES). It is the site of stored FATS, usually in the form of TRIGLYCERIDES. In mammals, there are two types of adipose tissue, the WHITE FAT and the BROWN FAT. Their relative distributions vary in different species with most adipose tissue being white. Fatty Tissue,Body Fat,Fat Pad,Fat Pads,Pad, Fat,Pads, Fat,Tissue, Adipose,Tissue, Fatty
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated
D052242 Adiponectin A 30-kDa COMPLEMENT C1Q-related protein, the most abundant gene product secreted by FAT CELLS of the white ADIPOSE TISSUE. Adiponectin modulates several physiological processes, such as metabolism of GLUCOSE and FATTY ACIDS, and immune responses. Decreased plasma adiponectin levels are associated with INSULIN RESISTANCE; TYPE 2 DIABETES MELLITUS; OBESITY; and ATHEROSCLEROSIS. ACRP30 Protein,Adipocyte Complement-Related Protein 30-kDa,Adipocyte, C1q and Collagen Domain Containing Protein,Adipose Most Abundant Gene Transcript 1,apM-1 Protein,Adipocyte Complement Related Protein 30 kDa,apM 1 Protein
D020133 Reverse Transcriptase Polymerase Chain Reaction A variation of the PCR technique in which cDNA is made from RNA via reverse transcription. The resultant cDNA is then amplified using standard PCR protocols. Polymerase Chain Reaction, Reverse Transcriptase,Reverse Transcriptase PCR,PCR, Reverse Transcriptase,Transcriptase PCR, Reverse

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