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The Relationship of Endocannabinoidome Lipid Mediators With Pain and Psychological Stress in Women With Fibromyalgia: A Case-Control Study

Artikel i vetenskaplig tidskrift
Författare N. Stensson
N. Ghafouri
M. Ernberg
Kaisa Mannerkorpi
E. Kosek
B. Gerdle
B. Ghafouri
Publicerad i Journal of Pain
Volym 19
Nummer/häfte 11
Sidor 1318-1328
ISSN 1526-5900
Publiceringsår 2018
Publicerad vid Institutionen för neurovetenskap och fysiologi, sektionen för hälsa och rehabilitering
Centrum för personcentrerad vård vid Göteborgs universitet (GPCC)
Sidor 1318-1328
Språk en
Länkar dx.doi.org/10.1016/j.jpain.2018.05....
Ämnesord Fibromyalgia, chronic, widespread pain, anxiety, depression, endocannabinoidome, 2-, chronic widespread pain, of-rheumatology 1990, osteoarthritis pain, n-acylethanolamine, trapezius muscle, peripheral pain, system, palmitoylethanolamide, anandamide, anxiety, Neurosciences & Neurology
Ämneskategorier Neurologi

Sammanfattning

Characterized by chronic widespread pain, generalized hyperalgesia, and psychological stress, fibromyalgia (FM) is difficult to diagnose and lacks effective treatments. Endocannabinoids arachidonoylethanolamide (AEA), 2-arachidonoylglycerol (2-AG), and the related oleoylethanolamide (OEA), palmitoylethanolamide (PEA), and stearoylethanolamide (SEA) are endogenous lipid mediators with analgesic and anti-inflammatory characteristics, in company with psychological modulating properties (eg, stress and anxiety), and are included in a new emerging "ome," the endocannabinoidome. This case-control study compared the concentration differences of AEA, OEA, PEA, SEA, and 2 AG in 104 women with FM and 116 healthy control subjects. All participants rated their pain, anxiety, depression, and current health status. The relationships between the lipid concentrations and the clinical assessments were investigated using powerful multivariate data analysis and traditional bivariate statistics. The concentrations of OEA, PEA, SEA, and 2-AG were significantly higher in women with FM than in healthy control subjects; significance remained for OEA and SEA after controlling for body mass index and age. 2-AG correlated positively with FM duration and body mass index, and to some extent negatively with pain, anxiety, depression, and health status. In FM, AEA correlated positively with depression ratings. The elevated circulating levels of endocannabinoidome lipids suggest that these lipids play a role in the complex pathophysiology of FM and might be signs of ongoing low-grade inflammation in FM. Although the investigated lipids are significantly altered in FM, their biological roles are uncertain with respect to the clinical manifestations of FM. Thus plasma lipids alone are not good biomarkers for FM. Perspective: This study reports about elevated plasma levels of endocannabinoidome lipid mediators in FM. The lipids' suitability to work as biomarkers for FM in the clinic were low; however, their altered levels indicate that a metabolic asymmetry is ongoing in FM, which could serve as a baseline during explorative FM pain management. (C) 2018 by the American Pain Society

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