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Sergi D, Sanz JM, Trentini A, Bonaccorsi G, Angelini S, Castaldo F, Morrone S, Spaggiari R, Cervellati C, Passaro A. HDL-Cholesterol Subfraction Dimensional Distribution Is Associated with Cardiovascular Disease Risk and Is Predicted by Visceral Adiposity and Dietary Lipid Intake in Women. Nutrients 2024; 16:1525. [PMID: 38794763 PMCID: PMC11124017 DOI: 10.3390/nu16101525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
HDL-cholesterol quality, including cholesterol distribution in HDL subfractions, is emerging as a key discriminant in dictating the effects of these lipoproteins on cardiovascular health. This study aims at elucidating the relationship between cholesterol distribution in HDL subfractions and CVD risk factors as well as diet quality and energy density in a population of pre- and postmenopausal women. Seventy-two women aged 52 ± 6 years were characterized metabolically and anthropometrically. Serum HDL-C subfractions were quantified using the Lipoprint HDL System. Cholesterol distribution in large HDL subfractions was lower in overweight individuals and study participants with moderate to high estimated CVD risk, hypertension, or insulin resistance. Cholesterol distribution in large, as opposed to small, HDL subfractions correlated negatively with insulin resistance, circulating triglycerides, and visceral adipose tissue (VAT). VAT was an independent positive and negative predictor of cholesterol distribution in large and small HDL subfractions, respectively. Furthermore, an increase in energy intake could predict a decrease in cholesterol levels in large HDL subfractions while lipid intake positively predicted cholesterol levels in small HDL subfractions. Cholesterol distribution in HDL subfractions may represent an additional player in shaping CVD risk and a novel potential mediator of the effect of diet on cardiovascular health.
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Affiliation(s)
- Domenico Sergi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Juana Maria Sanz
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Alessandro Trentini
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy;
| | - Gloria Bonaccorsi
- Department of Translational Medicine, Menopause and Osteoporosis Center, University Center for Studies on Gender Medicine, 44121 Ferrara, Italy;
| | - Sharon Angelini
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Fabiola Castaldo
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Sara Morrone
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Riccardo Spaggiari
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Carlo Cervellati
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
| | - Angelina Passaro
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (D.S.); (S.A.); (F.C.); (S.M.); (R.S.); (C.C.); (A.P.)
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Wang H, Wang J, Liu T, Leng Y, Yang W. Stem cell-derived exosomal MicroRNAs: Potential therapies in diabetic kidney disease. Biomed Pharmacother 2023; 164:114961. [PMID: 37257230 DOI: 10.1016/j.biopha.2023.114961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/23/2023] [Accepted: 05/27/2023] [Indexed: 06/02/2023] Open
Abstract
The diabetic kidney disease (DKD) is chronic kidney disease caused by diabetes and one of the most common comorbidities. It is often more difficult to treat end-stage renal disease once it develops because of its complex metabolic disorders, so early prevention and treatment are important. However, currently available DKD therapies are not ideal, and novel therapeutic strategies are urgently needed. The potential of stem cell therapies partly depends on their ability to secrete exosomes. More and more studies have shown that stem cell-derived exosomes take part in the DKD pathophysiological process, which may offer an effective therapy for DKD treatment. Herein, we mainly review potential therapies of stem cell-derived exosomes mainly stem cell-derived exosomal microRNAs in DKD, including their protective effects on mesangial cells, podocytes and renal tubular epithelial cells. Using this secretome as possible therapeutic drugs without potential carcinogenicity should be the focus of further research.
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Affiliation(s)
- Han Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China
| | - Jiajia Wang
- Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China
| | - Tiejun Liu
- Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China
| | - Yan Leng
- Affiliated Hospital of Changchun University of Chinese Medicine, Changchun 130021, China
| | - Weipeng Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Bordoni L, Zec M, Naumovski N, Sergi D. Editorial: The role of dietary fatty acids in metabolic health. Front Physiol 2023; 14:1211151. [PMID: 37288432 PMCID: PMC10242416 DOI: 10.3389/fphys.2023.1211151] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/16/2023] [Indexed: 06/09/2023] Open
Affiliation(s)
- Laura Bordoni
- Unit of Molecular Biology and Nutrigenomics, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Manja Zec
- School of Nutritional Sciences and Wellness, University of Arizona, Tucson, AZ, United States
| | - Nenad Naumovski
- Discipline of Nutrition and Dietetics, Faculty of Health, University of Canberra, Canberra, ACT, Australia
| | - Domenico Sergi
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
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Sergi D, Sanz JM, Lazzer S, Brombo G, Zuliani G, Biolo G, Šimunič B, Pišot R, Dalla Nora E, Passaro A. Interleukin-18 Is a Potential Biomarker Linking Dietary Fatty Acid Quality and Insulin Resistance: Results from a Cross-Sectional Study in Northern Italy. Nutrients 2023; 15:nu15071782. [PMID: 37049621 PMCID: PMC10097292 DOI: 10.3390/nu15071782] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 04/08/2023] Open
Abstract
Dietary lipids are pivotal in modulating metabolic inflammation. Among the inflammatory mediators characterizing metabolic inflammation, interleukin 18 (IL-18) has been consistently associated with obesity and insulin resistance. This study aims to evaluate whether the quality of lipid intake impacts upon IL-18 plasma levels and the implications on insulin resistance computed by the homeostatic model assessment for insulin resistance (HOMA-IR). Using a cross-sectional design, this study confirmed that IL-18 correlated positively with insulin resistance and individuals with a HOMA-IR ≥ 2.5 displayed higher circulating IL-18 levels compared with their insulin-sensitive counterparts. In terms of the effect of the quality of dietary lipids on IL-18 circulating levels, the ratio between monounsaturated, omega-3, polyunsaturated and saturated fatty acids as well as the intake of eicosapentaenoic and docosahexaenoic acids correlated negatively with IL-18. Despite this, IL-18 circulating levels, but not dietary fatty acid quality, predicted insulin resistance. Nevertheless, the ratio between omega 3 and saturated fatty acids was a predictor of IL-18 plasma levels. Thus, the downregulation of IL-18 may underpin, at least partially, the beneficial metabolic effects of substituting omega 3 for saturated fatty acids with this cytokine potentially representing a biomarker linking dietary lipids and metabolic outcomes.
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Affiliation(s)
- Domenico Sergi
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy
| | - Juana Maria Sanz
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy
| | - Stefano Lazzer
- Department of Medicine, University of Udine, Piazzale M. Kolbe 4, I-33100 Udine, Italy
| | - Gloria Brombo
- Medical Department, University Hospital of Ferrara Arcispedale Sant’Anna, Via A. Moro 8, I-44124 Ferrara, Italy
| | - Giovanni Zuliani
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy
- Medical Department, University Hospital of Ferrara Arcispedale Sant’Anna, Via A. Moro 8, I-44124 Ferrara, Italy
| | - Gianni Biolo
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Strada di Fiume, 447, I-34149 Trieste, Italy
| | - Boštjan Šimunič
- Institute for Kinesiology Research, Science and Research Centre of Koper, Garibaldijeva 1, SI-6000 Koper, Slovenia
| | - Rado Pišot
- Institute for Kinesiology Research, Science and Research Centre of Koper, Garibaldijeva 1, SI-6000 Koper, Slovenia
| | - Edoardo Dalla Nora
- Medical Department, University Hospital of Ferrara Arcispedale Sant’Anna, Via A. Moro 8, I-44124 Ferrara, Italy
| | - Angelina Passaro
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy
- Medical Department, University Hospital of Ferrara Arcispedale Sant’Anna, Via A. Moro 8, I-44124 Ferrara, Italy
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Sergi D, Zauli E, Tisato V, Secchiero P, Zauli G, Cervellati C. Lipids at the Nexus between Cerebrovascular Disease and Vascular Dementia: The Impact of HDL-Cholesterol and Ceramides. Int J Mol Sci 2023; 24:ijms24054403. [PMID: 36901834 PMCID: PMC10002119 DOI: 10.3390/ijms24054403] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
Cerebrovascular diseases and the subsequent brain hypoperfusion are at the basis of vascular dementia. Dyslipidemia, marked by an increase in circulating levels of triglycerides and LDL-cholesterol and a parallel decrease in HDL-cholesterol, in turn, is pivotal in promoting atherosclerosis which represents a common feature of cardiovascular and cerebrovascular diseases. In this regard, HDL-cholesterol has traditionally been considered as being protective from a cardiovascular and a cerebrovascular prospective. However, emerging evidence suggests that their quality and functionality play a more prominent role than their circulating levels in shaping cardiovascular health and possibly cognitive function. Furthermore, the quality of lipids embedded in circulating lipoproteins represents another key discriminant in modulating cardiovascular disease, with ceramides being proposed as a novel risk factor for atherosclerosis. This review highlights the role of HDL lipoprotein and ceramides in cerebrovascular diseases and the repercussion on vascular dementia. Additionally, the manuscript provides an up-to-date picture of the impact of saturated and omega-3 fatty acids on HDL circulating levels, functionality and ceramide metabolism.
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Affiliation(s)
- Domenico Sergi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
- Correspondence:
| | - Enrico Zauli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Veronica Tisato
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
| | - Paola Secchiero
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
| | - Giorgio Zauli
- King Khaled Eye Specialistic Hospital, Riyadh 11462, Saudi Arabia
| | - Carlo Cervellati
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
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Sergi D, Zauli E, Casciano F, Secchiero P, Zauli G, Fields M, Melloni E. Palmitic Acid Induced a Long-Lasting Lipotoxic Insult in Human Retinal Pigment Epithelial Cells, which Is Partially Counteracted by TRAIL. Antioxidants (Basel) 2022; 11:antiox11122340. [PMID: 36552548 PMCID: PMC9774631 DOI: 10.3390/antiox11122340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/15/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Hyperglycaemia and increased circulating saturated fatty acids are key metabolic features of type 2 diabetes mellitus (T2DM) that contribute to diabetic retinopathy pathogenesis. Contrarily, tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) has been shown to improve or prevent T2DM. This study aimed at investigating the effect of TRAIL in an in vitro model of human retinal pigment epithelium: the ARPE-19 cell line, treated with palmitic acid (PA) in the presence of high glucose concentration. PA caused a drop in cellular metabolic activity and cell viability as well as an increase in apoptosis rates, which were paralleled by an upregulation of reactive oxygen species (ROS) generation as well as mitochondrial fragmentation. Despite ARPE-19 cells expressing TRAIL-R2 at the cell surface, TRAIL failed to counteract the cytotoxic effects of PA. However, when TRAIL was used alongside PA and then removed or used alone following PA challenge, it partially attenuated PA-induced lipotoxicity. This effect of TRAIL appeared to rely upon the modulation of inflammation and ROS production. Thus, TRAIL exerted a trophic effect on ARPE-19 cells, which became evident only when the lipotoxic insult was removed. Nevertheless, whether recombinant TRAIL might have a therapeutic potential for the treatment of diabetic retinopathy requires further investigation.
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Affiliation(s)
- Domenico Sergi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Enrico Zauli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Fabio Casciano
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
- Interdepartmental Research Center for the Study of Multiple Sclerosis and Inflammatory and Degenerative Diseases of the Nervous System, University of Ferrara, 44121 Ferrara, Italy
- Correspondence:
| | - Paola Secchiero
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
| | - Giorgio Zauli
- King Khaled Eye Specialistic Hospital, Riyadh 11462, Saudi Arabia
| | - Matteo Fields
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Elisabetta Melloni
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
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PPARγ Gene as a Possible Link between Acquired and Congenital Lipodystrophy and its Modulation by Dietary Fatty Acids. Nutrients 2022; 14:nu14224742. [PMID: 36432429 PMCID: PMC9693235 DOI: 10.3390/nu14224742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
Lipodystrophy syndromes are rare diseases that could be of genetic or acquired origin. The main complication of lipodystrophy is the dysfunction of adipose tissue, which leads to an ectopic accumulation of triglycerides in tissues such as the liver, pancreas and skeletal muscle. This abnormal fat distribution is associated with hypertriglyceridemia, insulin resistance, liver steatosis, cardiomyopathies and chronic inflammation. Although the origin of acquired lipodystrophies remains unclear, patients show alterations in genes related to genetic lipodystrophy, suggesting that this disease could be improved or aggravated by orchestrating gene activity, for example by diet. Nowadays, the main reason for adipose tissue dysfunction is an imbalance in metabolism, caused in other pathologies associated with adipose tissue dysfunction by high-fat diets. However, not all dietary fats have the same health implications. Therefore, this article aims to summarize the main genes involved in the pathophysiology of lipodystrophy, identify connections between them and provide a systematic review of studies published between January 2017 and January 2022 of the dietary fats that can modulate the development of lipodystrophy through transcriptional regulation or the regulation of protein expression in adipocytes.
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Suriano F, Nyström EEL, Sergi D, Gustafsson JK. Diet, microbiota, and the mucus layer: The guardians of our health. Front Immunol 2022; 13:953196. [PMID: 36177011 PMCID: PMC9513540 DOI: 10.3389/fimmu.2022.953196] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/19/2022] [Indexed: 12/12/2022] Open
Abstract
The intestinal tract is an ecosystem in which the resident microbiota lives in symbiosis with its host. This symbiotic relationship is key to maintaining overall health, with dietary habits of the host representing one of the main external factors shaping the microbiome-host relationship. Diets high in fiber and low in fat and sugars, as opposed to Western and high-fat diets, have been shown to have a beneficial effect on intestinal health by promoting the growth of beneficial bacteria, improve mucus barrier function and immune tolerance, while inhibiting pro-inflammatory responses and their downstream effects. On the contrary, diets low in fiber and high in fat and sugars have been associated with alterations in microbiota composition/functionality and the subsequent development of chronic diseases such as food allergies, inflammatory bowel disease, and metabolic disease. In this review, we provided an updated overview of the current understanding of the connection between diet, microbiota, and health, with a special focus on the role of Western and high-fat diets in shaping intestinal homeostasis by modulating the gut microbiota.
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Affiliation(s)
- Francesco Suriano
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
| | - Elisabeth E. L. Nyström
- Unit for Degradomics of the Protease Web, Institute of Biochemistry, Kiel University, Kiel, Germany
| | - Domenico Sergi
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
| | - Jenny K. Gustafsson
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden
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Shi P, Liao K, Xu J, Wang Y, Xu S, Yan X. Eicosapentaenoic acid mitigates palmitic acid-induced heat shock response, inflammation and repair processes in fish intestine. FISH & SHELLFISH IMMUNOLOGY 2022; 124:362-371. [PMID: 35421576 DOI: 10.1016/j.fsi.2022.04.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Understanding the metabolic effects of fatty acids on fish intestine is critical to the substitution of fish oil with vegetable oils in aquaculture. In this study, the effects of eicosapentaenoic acid (EPA) and palmitic acid (PA) on fish intestine were evaluated in vitro and in vivo. As the first step for in vitro study, an intestinal cell line (SPIF) was established from silver pomfret (Pampus argenteus). Thereafter, the effects of EPA and PA on cell viability, prostaglandin E2 (PGE2) production, and the expression of genes related to heat shock response, inflammation, extracellular matrix (ECM) formation and degradation were examined in SPIF cells. Finally, these metabolic effects of EPA and PA on the intestine were examined in zebrafish (Danio rerio) larvae. Results showed that all tested fatty acids (PA, oleic acid, linoleic acid, α-linolenic acid, arachidonic acid, and docosahexaenoic acid) except EPA reduced SPIF viability to distinct degrees at the same concentrations. PA decreased SPIF viability accompanied by an increase in PGE2 level. Meanwhile, PA increased the expression of genes related to heat shock response (grp78, grp94, hsp70, and hsp90) and inflammation (nf-κb, il-1β, and cox2). Furthermore, PA reduced the expression of collagen type I (col1a1a and col1a1b) and extracellular matrix (ECM) degradation-related gene mmp2, while up-regulating timp2 mRNA expression. In vivo, PA also increased hsp70, il-1β, and cox2 mRNA levels and limited the expression of collagen type I in the larval zebrafish intestine. Interestingly, the combination of EPA and PA partially recovered the PA-induced changes in cell viability, PGE2 production, and mRNA expression in vitro and in vivo. These results suggest that PA may result in heat shock and inflammatory responses, as well as alter ECM formation and degradation in fish intestine, while EPA could at least partially mitigate these negative effects caused by PA.
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Affiliation(s)
- Peng Shi
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, PR China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China
| | - Kai Liao
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, PR China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China.
| | - Jilin Xu
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, PR China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China
| | - Yajun Wang
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, PR China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China
| | - Shanliang Xu
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang, 315211, PR China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China
| | - Xiaojun Yan
- Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education of China, Ningbo, Zhejiang, 315211, PR China
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Sergi D, Luscombe-Marsh N, Naumovski N, Abeywardena M, O'Callaghan N. Palmitic Acid, but Not Lauric Acid, Induces Metabolic Inflammation, Mitochondrial Fragmentation, and a Drop in Mitochondrial Membrane Potential in Human Primary Myotubes. Front Nutr 2021; 8:663838. [PMID: 34136519 PMCID: PMC8200524 DOI: 10.3389/fnut.2021.663838] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/22/2021] [Indexed: 12/21/2022] Open
Abstract
The chain length of saturated fatty acids may dictate their impact on inflammation and mitochondrial dysfunction, two pivotal players in the pathogenesis of insulin resistance. However, these paradigms have only been investigated in animal models and cell lines so far. Thus, the aim of this study was to compare the effect of palmitic (PA) (16:0) and lauric (LA) (12:0) acid on human primary myotubes mitochondrial health and metabolic inflammation. Human primary myotubes were challenged with either PA or LA (500 μM). After 24 h, the expression of interleukin 6 (IL-6) was assessed by quantitative polymerase chain reaction (PCR), whereas Western blot was used to quantify the abundance of the inhibitor of nuclear factor κB (IκBα), electron transport chain complex proteins and mitofusin-2 (MFN-2). Mitochondrial membrane potential and dynamics were evaluated using tetraethylbenzimidazolylcarbocyanine iodide (JC-1) and immunocytochemistry, respectively. PA, contrarily to LA, triggered an inflammatory response marked by the upregulation of IL-6 mRNA (11-fold; P < 0.01) and a decrease in IκBα (32%; P < 0.05). Furthermore, whereas PA and LA did not differently modulate the levels of mitochondrial electron transport chain complex proteins, PA induced mitochondrial fragmentation (37%; P < 0.001), decreased MFN-2 (38%; P < 0.05), and caused a drop in mitochondrial membrane potential (11%; P < 0.01) compared to control, with this effect being absent in LA-treated cells. Thus, LA, as opposed to PA, did not trigger pathogenetic mechanisms proposed to be linked with insulin resistance and therefore represents a healthier saturated fatty acid choice to potentially preserve skeletal muscle metabolic health.
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Affiliation(s)
- Domenico Sergi
- Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation, Adelaide, SA, Australia.,Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | | | - Nenad Naumovski
- Faculty of Health, University of Canberra, Canberra, ACT, Australia.,Functional Foods and Nutrition Research Laboratory, University of Canberra, Bruce, ACT, Australia
| | - Mahinda Abeywardena
- Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation, Adelaide, SA, Australia
| | - Nathan O'Callaghan
- Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation, Adelaide, SA, Australia
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