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Type: Journal article
Title: Inflammatory markers in human follicular fluid correlate with lipid levels and Body Mass Index
Author: Bermudez Gonzalez, M.
Lane, M.
Knight, E.
Robker, R.
Citation: Journal of Reproductive Immunology, 2018; 130:25-29
Publisher: Elsevier
Issue Date: 2018
ISSN: 0165-0378
Statement of
Macarena B. Gonzalez, Michelle Lane, Emma J. Knight, Rebecca L. Robker
Abstract: The detrimental consequences of obesity on female fertility are well known, but the functional changes that occur in the ovary in response to elevated BMI are not clear. Obesity induces multiple components of a systemic inflammatory state that is a key pathway by which it initiates tissue dysfunction in adipose, liver and muscle; however whether obesity induces similar inflammatory changes in the ovary has not been fully investigated. This is important to understand because it is increasingly clear that obesity at conception impacts not only pregnancy rates but also influences pre-implantation embryo development. To further understand the characteristics of inflammation in the ovaries of obese women we analysed a panel of cytokines (IL6, IL10 and TNFα), adipokines (adiponectin, leptin and monocyte chemotactic factor 1 (MCP-1)) and acute phase proteins (C-Reactive Protein (CRP) and sICAM-1) in the ovarian follicular fluid obtained at oocyte aspiration from women (n = 48) who were lean, overweight or obese. We hypothesised that adipokines and pro-inflammatory cytokines would be correlated with and/or dysregulated by increasing Body Mass Index (BMI). Surprisingly however, the majority were not related to BMI but instead were positively correlated with lipid levels in follicular fluid, namely triglycerides and free fatty acids. Further, as is typical of metabolic inflammation, the inflammatory markers that were associated with intra-follicular lipids included both pro-inflammatory (CRP, IL6, TNFα) and anti-inflammatory (adiponectin, IL10) mediators. The direct consequences of an ovarian microenvironment containing high levels of lipids and inflammatory mediators are not known but could impact luteinisation, ovulation and/or oocyte developmental competence.
Keywords: Obesity; inflammation; triglyceride; free fatty acids; cytokine; adipokine
Rights: © 2018 Elsevier B.V. All rights reserved.
DOI: 10.1016/j.jri.2018.08.005
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