Dietary patterns and single nucleotide polymorphism in the genes of adiponectin, Toll-like receptor 4, IL-1β, IL-6, IL-10, TNF-α, CCL-2 e C-reactive protein and its association with a systemic inflammation score in a population-based study - HS-SP

Author(s)

Marina Maintinguer Norde

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Faculdade de Saúde Pública (FSP/CIR)
• Defense date: 2020-02-11

Examining board members

Marcelo Macedo Rogero; Marilisa Berti de Azevedo Barros; Michelle Alessandra de Castro; Maria Aderuza Horst

• Advisor: Marcelo Macedo Rogero

Abstract

Introduction: Chronic and systemic low-grade inflammation, for which diet is an important risk factor, is present in the pathophysiology of chronic non-communicable diseases that are among the main causes of death worldwide. Besides diet, the interaction between dietary patterns and the genome can explain variations in the inflammatory response across individuals. Objective: To verify the association of dietary patterns and single nucleotide polymorphism in the genes of adiponectin, Toll-like receptor (TLR)-4, interleukin (IL)-1β, IL-6, IL-10, tumor necrosis factor (TNF)-α, C-C motif chemokine ligand (CCL)-2 and C-reactive protein (PCR) with a systemic inflammation score. Methods: Secondary data of 269 adults (20 to 59 y.o.) and 172 elderly (60 to 75 y.o.) from the population-based study Health Survey of Sao Paulo (HS-SP), 2008 edition, and 284 adults and 217 elderly individuals from HS-SP 2015 edition were used in the present study. Dietary assessment was done through two 24-hour recalls and one validated food frequency questionnaire. From the blood, plasma concentration of adiponectin, CRP, IL-1β, IL-6, IL-8, IL-10, TNF-α, IL-12p70, CCL-2, soluble intercellular adhesion molecule (sICAM)-1 and soluble vascular cell adhesion molecule (sVCAM)-1 were determined, all of which composed the systemic inflammation score. From extracted DNA, 31 SNPs in ADIPOQ, TLR4, IL1B, IL6, IL10, TNFA, CCL2 e CRP genes were genotypes using the Taqman Open Array system. The two analyzed dietary patterns were the Brazilian Health Eating Index-revised (IQD-R) and the Empirical Dietary Inflammatory Pattern (EDIP), which was further adapted to be used in the Sao Paulo population (EDIP-SP). Results: The systemic inflammation score was associated with blood lipid levels, glycemia and blood pressure. The systemic inflammatory score independently associated factors were: having higher BMI; being in the highest category of age (> 50 years); doing less than 150min/week of commuting physical; having lower IQD-R and higher EDIP-SP, being GG homozygous for SNP TLR4 rs5030728 G>A e and SNP ADIPOQ rs1501299 G>T, even after adjustments for medication use, misreporting of energy intake and smoking status. EDIP-SP, composed of \"processed meat\", \"fruits and vegetables\" and \"rice and beans\" groups, was replicated only in men. No interaction was observed between SNP TLR4 rs5030728 G>A and ADIPOQ rs1501299 G>T and the dietary patterns, IQD-R and EDIP-SP. Conclusion: Higher score for IQD-R, and a lower score for EDIP-SP, were inversely associated with systemic low-grade inflammation, independently of confounders, in the Sao Paulo population. The GG genotype for SNP TLR4 rs5030728 G>A and for ADIPOQ rs1501299 G>T predispose this population to systemic low-grade inflammation. Neither the dietary patterns nor the SNP modify the effect of one another on inflammation. (AU)

• FAPESP's process: 16/03803-5 - Association of dietary patterns and single nucleotide plymorphisms in the genes of adiponectin, Toll like receptor-4, IL-1², IL-6, IL-10, TNF-±, CCL-2 and C reactive protein with a systemic inflammatory pattern at a population-based study - ISA-Capital
• Grantee: Marina Maintinguer Norde
• Support Opportunities: Scholarships in Brazil - Doctorate