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Herring roe oil supplementation alters microglial cell gene expression and reduces peripheral inflammation after immune activation in a neonatal piglet model
Journal article   Open access   Peer reviewed

Herring roe oil supplementation alters microglial cell gene expression and reduces peripheral inflammation after immune activation in a neonatal piglet model

Megan P. Caputo, Emily C. Radlowski, Marcus A. Lawson, Adrienne M. Antonson, Josephine E. Watson, Stephanie M. Matt, Brian J. Leyshon, Aditi Das and Rodney W. Johnson
Brain, behavior, and immunity, v 81, pp 455-469
Oct 2019
PMID: 31271868
url
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6754775View
Accepted (AM)Open Access (License Unspecified) Open

Abstract

Brain Cytokine Endocannabinoids Gene expression Herring roe oil Inflammation Lipopolysaccharide Microglia Piglet Polyunsaturated fatty acids
•Dietary herring roe oil increased DHA in the piglet occipital lobe.•Herring roe oil decreased arachidonic acid metabolites in the occipital lobe.•Herring roe oil decreased circulating neutrophils.•Herring roe oil did not affect ex vivo microglial pro-inflammatory cytokine production.•Genes CXCL16, TGFBR1, C1QA were upregulated by herring roe oil in microglial cells. Neonatal brain development can be disrupted by infection that results in microglial cell activation and neuroinflammation. Studies indicate that polyunsaturated fatty acids (PUFAs) and their metabolites can resolve inflammation. It is not known if dietary PUFA increases lipid metabolites in brain or reduces neuroinflammation in neonates. We hypothesized that dietary PUFAs might suppress neuroinflammation by inhibiting pro-inflammatory cytokine over-production and promoting inflammatory resolution in the periphery and brain. Piglets were obtained on postnatal day (PD) 2 and randomly assigned to herring roe oil (HRO) or control (CON) diet. HRO was included at 2 g/kg powdered diet. HRO increased DHA levels in occipital lobe and the DHA to arachidonic acid (ARA) ratio in hippocampal tissue. HRO decreased ARA metabolites in occipital lobe. HRO failed to attenuate microglial pro-inflammatory cytokine production ex vivo. HRO did not affect fever or circulating resolvin D1 levels. HRO decreased circulating neutrophils and liver inflammatory gene expression, but increased resolution marker gene expression in liver post LPS. HRO upregulated CXCL16, TGFBR1, and C1QA in microglial cells. HRO supplementation exerted beneficial effects on inflammation in the periphery, but further studies are needed to evaluate the specific effects of omega-3 supplementation on microglial cell physiology in the neonate.

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Collaboration types
Domestic collaboration
Web of Science research areas
Immunology
Neurosciences
Psychiatry
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