Omega-3 (n-3) and omega-6 (n-6) polyunsaturated fatty acids (PUFAs) are thought to have anti- and pro-inflammatory roles, respectively, and influence the risk of various chronic diseases. However, it is unclear whether these associations are causal.MethodsWe examined the associations of dietary polyunsaturated FAs with biomarkers of systemic inflammation: C-reactive protein (CRP), glycoprotein acetyls (GlycA), and interleukin… Continue reading The relationship between #polyunsaturated #fatty acids and #inflammation: evidence from cohort and Mendelian randomization analyses
Tag: fatty acids
Vitamin #D and Marine n-3 #Fatty Acids for #Autoimmune Disease Prevention: Outcomes at Two Years after VITAL Trial Completion
ObjectiveIn the 5.3 year randomized, 2 x 2 factorial, double-blind, placebo-controlled VITamin D and OmegA-3 TriaL (VITAL), vitamin D supplementationreduced autoimmune disease (AD) incidence (hazard ratio [HR] 0.78, 95% confidence interval 0.61-0.99). Omega-3(n-3) fatty acid supplementation showed a statistically non-significant reduction (HR 0.85, 0.67-1.08). We aimed to confirm further AD cases arising during and after randomization and… Continue reading Vitamin #D and Marine n-3 #Fatty Acids for #Autoimmune Disease Prevention: Outcomes at Two Years after VITAL Trial Completion
FGF1 and insulin control lipolysis by convergent pathways
Highlights•FGF1-FGFR1 signaling suppresses adipose lipolysis to curb hepatic glucose production•FGF1 suppresses lipolysis by inhibiting cAMP/PKA axis via PDE4D-S44 phosphorylation•Overexpression of PDE4D in the adipose tissue of diabetic mice corrects hyperglycemia•FGF1/PDE4D antilipolytic pathway is responsive to fed/fast states SummaryInexorable increases in insulin resistance, lipolysis, and hepatic glucose production (HGP) are hallmarks of type 2 diabetes. Previously,… Continue reading FGF1 and insulin control lipolysis by convergent pathways
Free fatty-acid transport via CD36 drives β-oxidation-mediated hematopoietic stem cell response to infection
Acute infection is known to induce rapid expansion of hematopoietic stem cells (HSCs), but the mechanisms supporting this expansion remain incomplete. Using mouse models, we show that inducible CD36 is required for free fatty acid uptake by HSCs during acute infection, allowing the metabolic transition from glycolysis towards β-oxidation. Mechanistically, high CD36 levels promote FFA… Continue reading Free fatty-acid transport via CD36 drives β-oxidation-mediated hematopoietic stem cell response to infection
Serum Nonesterified #Fatty Acids and Incident #Stroke: The CHS
Significant associations between total nonesterified fatty acid (NEFA) concentrations and incident stroke have been reported in some prospective cohort studies. We evaluated the associations between incident stroke and serum concentrations of nonesterified saturated, monounsaturated, polyunsaturated, and trans fatty acids. Methods and ResultsCHS (Cardiovascular Health Study) participants (N=2028) who were free of stroke at baseline (1996–1997)… Continue reading Serum Nonesterified #Fatty Acids and Incident #Stroke: The CHS
Influence of Free #Fatty Acid Concentrations and #Weight Loss on Adipose Tissue Direct Free Fatty Acid Storage Rates
The factors that determine the recycling of free fatty acids (FFA) back into different adipose tissue depots via the direct storage pathway are not completely understood. ObjectiveTo assess the interactions between adipocyte factors and plasma FFA concentrations that determine regional FFA storage rates. DesignWe measured direct adipose tissue FFA storage rates before and after weight… Continue reading Influence of Free #Fatty Acid Concentrations and #Weight Loss on Adipose Tissue Direct Free Fatty Acid Storage Rates
#Adipose saturation reduces #lipotoxic systemic inflammation and explains the #obesity paradox
Obesity sometimes seems protective in disease. This obesity paradox is predominantly described in reports from the Western Hemisphere during acute illnesses. Since adipose triglyceride composition corresponds to long-term dietary patterns, we performed a meta-analysis modeling the effect of obesity on severity of acute pancreatitis, in the context of dietary patterns of the countries from which… Continue reading #Adipose saturation reduces #lipotoxic systemic inflammation and explains the #obesity paradox
#EPA and #DHA differentially modulate monocyte #inflammatory response in subjects with chronic inflammation in part via plasma specialized pro-resolving lipid mediators: A randomized, double-blind, crossover study
The independent effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on chronic inflammation through their downstream lipid mediators, including the specialized pro-resolving lipid mediators (SPM), remain unstudied. Therefore, we compared the effects of EPA and DHA supplementation on monocyte inflammatory response and plasma polyunsaturated fatty acids (PUFA) SPM lipidome.. After a 4-week lead-in phase… Continue reading #EPA and #DHA differentially modulate monocyte #inflammatory response in subjects with chronic inflammation in part via plasma specialized pro-resolving lipid mediators: A randomized, double-blind, crossover study
Dietary Lipids Induce Ferroptosis in Caenorhabditis elegans and Human Cancer Cells
Dietary lipids impact development, homeostasis, and disease, but links between specific dietary fats and cell fates are poorly understood. Ferroptosis is an iron-dependent form of nonapoptotic cell death associated with oxidized polyunsaturated phospholipids. Here, we show that dietary ingestion of the polyunsaturated fatty acid (PUFA) dihomogamma-linolenic acid (DGLA; 20:3n-6) can trigger germ-cell ferroptosis and sterility… Continue reading Dietary Lipids Induce Ferroptosis in Caenorhabditis elegans and Human Cancer Cells
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