Novel Findings in Fatty Acids and Inflammation

A special issue of Biology (ISSN 2079-7737).

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 6145

Special Issue Editors


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Guest Editor
School of Medicine, Faculty of Health Sciences, University of Eastern Finland, FI-70211 Kuopio, Finland
Interests: fatty acids; inflammatory disease; lipid mediators

E-Mail Website
Guest Editor
School of Medicine, Faculty of Health Sciences, University of Eastern Finland, FI-70211 Kuopio, Finland
Interests: fatty acids; inflammatory disease; lipid mediators

Special Issue Information

Dear colleagues,

The role of fatty acids (FA) in inflammation is complex, with many unresolved issues regarding nutrition, synthesis of lipid mediators from FA, and the pro- or anti-inflammatory roles of particular FA. Traditionally, n-3 polyunsaturated FA (PUFA) have been classified as beneficial and n-6 PUFA as pro-inflammatory, and while arachidonic acid (20:4n-6) is the precursor of pro-inflammatory mediators, its increased intake per se can fail to increase the concentrations of inflammatory markers, but may still inhibit the pro-resolving effects of n-3 PUFA. While theoretically beneficial, n-3 PUFA consumption at feasible levels does not necessarily initiate anti-inflammatory effects in humans. In overt inflammation, such as rheumatoid arthritis, the balance of inflammatory to anti-inflammatory FA and their derivatives shows both local and systemic changes. Moreover, low-grade inflammatory diseases that could entail obesity have received well-deserved attention. Among the hypotheses behind the inflammatory effects of obesity is that the fat-overloaded adipocytes could directly activate the immune pathogen-sensors that cause chronic inflammation. Emerging research on extracellular vesicles suggests that there might be one signal from the adipocytes to other organ systems. In this Special Issue, we welcome contributions associated with these fields of FA research, including dietetics, therapeutic interventions, genetics, and studies in molecular biology.

Prof. Petteri Nieminen
Dr. Anne Mari Mustonen
Guest Editors

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Keywords

  • extracellular vesicles
  • fatty acids
  • inflammatory disease
  • lipid mediators
  • MUFA
  • PUFA
  • SFA
  • SPM

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Published Papers (2 papers)

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Research

12 pages, 303 KiB  
Article
Association of IFNA16 and TNFRSF19 Polymorphisms with Intramuscular Fat Content and Fatty Acid Composition in Pigs
by Supamit Mekchay, Nanthana Pothakam, Worrarak Norseeda, Pantaporn Supakankul, Tawatchai Teltathum, Guisheng Liu, Watcharapong Naraballobh, Trisadee Khamlor, Korawan Sringarm and Patcharin Krutmuang
Biology 2022, 11(1), 109; https://doi.org/10.3390/biology11010109 - 10 Jan 2022
Cited by 3 | Viewed by 2476
Abstract
Interferon-alpha-16 (IFNA16) and tumor necrosis factor receptor superfamily member 19 (TNFRSF19) are cytokines that may play a role in adipogenesis and fatness. Single nucleotide polymorphisms (SNPs) of the porcine IFNA16 and TNFRSF19 genes were verified and their association with intramuscular fat (IMF) content [...] Read more.
Interferon-alpha-16 (IFNA16) and tumor necrosis factor receptor superfamily member 19 (TNFRSF19) are cytokines that may play a role in adipogenesis and fatness. Single nucleotide polymorphisms (SNPs) of the porcine IFNA16 and TNFRSF19 genes were verified and their association with intramuscular fat (IMF) content and fatty acid (FA) composition were evaluated in commercial crossbred pigs. Two non-synonymous SNPs of the porcine IFNA16 c.413G > A and TNFRSF19 c.860G > C loci were detected in commercial crossbred pigs. The porcine IFNA16 c.413G >A polymorphism was significantly associated with stearic acid, total saturated FAs (SFAs), and the ratio of monounsaturated FAs (MUFAs) to SFAs (p < 0.05). Furthermore, the porcine TNFRSF19 c.860G > C polymorphism was found to be significantly associated with IMF content and arachidic acid levels (p < 0.05). The results revealed that porcine IFNA16 and TNFRSF19 polymorphisms are related to IMF content and/or FA composition and affirmed the importance of these cytokine genes as potential candidate genes for lipid deposition and FA composition in the muscle tissue of pigs. Full article
(This article belongs to the Special Issue Novel Findings in Fatty Acids and Inflammation)
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12 pages, 1833 KiB  
Article
Synovial Fluid Fatty Acid Profiles Are Differently Altered by Inflammatory Joint Pathologies in the Shoulder and Knee Joints
by Anne-Mari Mustonen, Reijo Käkelä, Antti Joukainen, Petri Lehenkari, Antti Jaroma, Tommi Kääriäinen, Heikki Kröger, Tommi Paakkonen, Sanna P. Sihvo and Petteri Nieminen
Biology 2021, 10(5), 401; https://doi.org/10.3390/biology10050401 - 4 May 2021
Cited by 13 | Viewed by 2925
Abstract
Anomalies of fatty acid (FA) metabolism characterize osteoarthritis (OA) and rheumatoid arthritis (RA) in the knee joint. No previous study has investigated the synovial fluid (SF) FA manifestations in these aging-related inflammatory diseases in the shoulder. The present experiment compared the FA alterations [...] Read more.
Anomalies of fatty acid (FA) metabolism characterize osteoarthritis (OA) and rheumatoid arthritis (RA) in the knee joint. No previous study has investigated the synovial fluid (SF) FA manifestations in these aging-related inflammatory diseases in the shoulder. The present experiment compared the FA alterations between the shoulder and knee joints in patients with end-stage OA or end-stage RA. SF samples were collected during glenohumeral or knee joint surgery from trauma controls and from OA and RA patients (n = 42). The FA composition of SF total lipids was analyzed by gas chromatography with flame ionization and mass spectrometric detection and compared across cohorts. The FA signatures of trauma controls were mostly uniform in both anatomical locations. RA shoulders were characterized by elevated percentages of 20:4n-6 and 22:6n-3 and with reduced proportions of 18:1n-9. The FA profiles of OA and RA knees were relatively uniform and displayed lower proportions of 18:2n-6, 22:6n-3 and total n-6 polyunsaturated FAs (PUFAs). The results indicate location- and disease-dependent differences in the SF FA composition. These alterations in FA profiles and their potential implications for the production of PUFA-derived lipid mediators may affect joint lubrication, synovial inflammation and pannus formation as well as cartilage and bone degradation and contribute to the pathogeneses of inflammatory joint diseases. Full article
(This article belongs to the Special Issue Novel Findings in Fatty Acids and Inflammation)
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