Full text
| |
| Author(s): |
Marina Maintinguer Norde
Total Authors: 1
|
| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Saúde Pública (FSP/CIR) |
| Defense date: | 2015-06-23 |
| Examining board members: |
Marcelo Macedo Rogero;
Sandra Mara Ferreira Villares;
Marco Aurelio Ramirez Vinolo
|
| Advisor: | Marcelo Macedo Rogero |
| Abstract | |
Introduction: Experimental, epidemiological and clinical evidences point to a pathogenic role of inflammation on metabolic disorders development, and to the relationship between this inflammatory response and the quantity and quality of dietary fatty acids. Single Nucleotide Polymorphisms (SNP) can modulate the relationship between fatty acids and plasma inflammatory biomarkers levels. Objective: To verify the association between SNP in the genes of adiponectin, TLR- 4, IL-1 and IL-6 and dietary fatty acids and their effects to a systemic inflammatory pattern at a population-based study ISA-Capital. Methods: This study sample was composed by adults (20 to 59 years), participants of the population-based study ISAcapital 2008-2010 (n=302). Dietary data was collected using two 24 hours dietary recall. Plasma concentration of adiponectin, C reactive protein, IL-1, IL-6, IL-8, IL- 10, tumor necrosis factor-alfa, IL-12p70, Chemokine C-C motif ligand (CCL) 2, soluble intercellular adhesion molecule (sICAM)-1 and soluble vascular cell adhesion molecule (sVCAM)-1 was determined by multiplex immunoassay. Plasma FA profile was determined by gas chromatography. SNP from adiponectin (rs266729, rs17300539, rs16861209, rs1501299 e rs2241766), TLR4 (rs4986790, rs4686791, rs5030728, rs11536889), IL-1 (rs1143623, rs16944, rs1143627, rs1143634 e rs1143643) and IL-6 (rs1800795, rs1800796, rs1800797) gene were genotyped by Taqman Open Array system. A Cluster multivariate analysis (k-means) was conducted to separate individual into inflammatory group (INF), n=93, and noninflammatory group (NINF), n=169, according to eleven inflammatory biomarkers plasma levels. Results: All the SNP were in Hardy-Weinberg equilibrium (n=301). INF had statistically higher age, waist circumference, blood pressure and plasma tryglicerides concentration than NINF. INF presented statistically higher plasma palmitic acid (C16:0) levels, saturated fatty acid (SFA)/omega-6 fatty acid (n-6) ratio and SFA/polyunsaturated fatty acid (PUFA) ratio and estimated stearoil CoA 10 desaturase activity, and statistically lower plasma PUFA, n-6 and arachidonic acid e (AA) and estimate delta-5-desaturase (D5D) activity in comparison to NINF. Statistically significant SNP-plasma fatty acid interactions were found between SNP +6054 G>A (rs1143643) of IL-1 gene and stearic acid, AA and PUFA and estimate delta-6-desaturase (D6D) activity; between SNP +3725 G>C (rs11536889) of TLR-4 gene and AA/eicosapentaenoic acid (EPA) ratio; between SNP +45 T>G (rs2241766) of adiponectin gene and omega-3 fatty acid (n-3); between SNP -7734 C>A (rs16861209) of adiponectin gene and AA; and between SNP -11391 G>A (rs17300539) of adiponectin gene and SFA. In conclusion, some plasma fatty acid subfractions can modulate inflammation and SNP of adiponectin, TLR-4, IL-1 and IL-6 genes can interact with plasma fatty acids to modulate the chance to develop systemic inflammation. (AU) | |
| FAPESP's process: | 13/01740-8 - Association between single nucleotide polymorphism related to adiponectin, Toll like receptor 4, IL-1² and IL-6 genes and fatty acids intake and their effects on systemic inflammatory pattern in a population based study - ISA capital. |
| Grantee: | Marina Maintinguer Norde |
| Support Opportunities: | Scholarships in Brazil - Master |