Journal of Lipid Research最新文献

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The adipocyte apolipoprotein M is negatively associated with inflammation. 脂肪细胞载脂蛋白 M 与炎症呈负相关。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-10-01 Epub Date: 2024-09-19 DOI: 10.1016/j.jlr.2024.100648
Laurie Frances, Mikael Croyal, Soline Pittet, Léa Da Costa Fernandes, Milan Boulaire, Laurent Monbrun, Ellen E Blaak, Christina Christoffersen, Cédric Moro, Geneviève Tavernier, Nathalie Viguerie
{"title":"The adipocyte apolipoprotein M is negatively associated with inflammation.","authors":"Laurie Frances, Mikael Croyal, Soline Pittet, Léa Da Costa Fernandes, Milan Boulaire, Laurent Monbrun, Ellen E Blaak, Christina Christoffersen, Cédric Moro, Geneviève Tavernier, Nathalie Viguerie","doi":"10.1016/j.jlr.2024.100648","DOIUrl":"10.1016/j.jlr.2024.100648","url":null,"abstract":"<p><p>Obesity is associated with the development of local adipose tissue (AT) and systemic inflammation. Most adipokines are upregulated with obesity and have pro-inflammatory properties. Few are downregulated and possess beneficial anti-inflammatory effects. The apolipoprotein M (APOM) is an adipokine whose expression is low during obesity and associated with a metabolically healthy AT. Here, the role of adipose-derived APOM on obesity-associated AT inflammation was investigated by measuring the expression of pro-inflammatory genes in human and mouse models. In 300 individuals with obesity, AT APOM mRNA level was negatively associated with plasma hs-CRP. The inflammatory profile was assessed in Apom<sup>-/-</sup> and WT mice fed a normal chow diet (NCD), or a high-fat diet (HFD) to induce AT inflammation. After HFD, mice had a higher inflammatory profile in AT and liver, and a 50% lower Apom gene expression compared with NCD-fed mice. Apom deficiency was associated with a higher inflammatory signature in AT compared with WT mice but not in the liver. Adeno-associated viruses encoding human APOM were used to induce APOM overexpression: in vivo, in WT mice AT prior to HFD; in vitro, in human adipocytes which conditioned media was applied to ThP-1 macrophages. The murine AT overexpressing APOM gene had a reduced inflammatory profile. The macrophages treated with APOM-enriched media from adipocytes exhibited lower IL6 and MCP1 gene expression compared with macrophages treated with control media, independently of S1P. Our study highlights the protective role of adipocyte APOM against obesity-induced AT inflammation.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100648"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11513530/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142289303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Setting the curve: the biophysical properties of lipids in mitochondrial form and function. 设定曲线:线粒体形态和功能中脂类的生物物理特性。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-10-01 Epub Date: 2024-09-18 DOI: 10.1016/j.jlr.2024.100643
Kailash Venkatraman, Christopher T Lee, Itay Budin
{"title":"Setting the curve: the biophysical properties of lipids in mitochondrial form and function.","authors":"Kailash Venkatraman, Christopher T Lee, Itay Budin","doi":"10.1016/j.jlr.2024.100643","DOIUrl":"10.1016/j.jlr.2024.100643","url":null,"abstract":"<p><p>Mitochondrial membranes are defined by their diverse functions, complex geometries, and unique lipidomes. In the inner mitochondrial membrane, highly curved membrane folds known as cristae house the electron transport chain and are the primary sites of cellular energy production. The outer mitochondrial membrane is flat by contrast, but is critical for the initiation and mediation of processes key to mitochondrial physiology: mitophagy, interorganelle contacts, fission and fusion dynamics, and metabolite transport. While the lipid composition of both the inner mitochondrial membrane and outer mitochondrial membrane have been characterized across a variety of cell types, a mechanistic understanding for how individual lipid classes contribute to mitochondrial structure and function remains nebulous. In this review, we address the biophysical properties of mitochondrial lipids and their related functional roles. We highlight the intrinsic curvature of the bulk mitochondrial phospholipid pool, with an emphasis on the nuances surrounding the mitochondrially-synthesized cardiolipin. We also outline emerging questions about other lipid classes - ether lipids, and sterols - with potential roles in mitochondrial physiology. We propose that further investigation is warranted to elucidate the specific properties of these lipids and their influence on mitochondrial architecture and function.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100643"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11513603/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142289302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel odd-chain cyclopropane fatty acids: detection in a mammalian lipidome and uptake by hepatosplanchnic tissues. 新型奇链环丙烷脂肪酸:在哺乳动物脂质体中的检测和肝组织的吸收。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-10-01 Epub Date: 2024-08-27 DOI: 10.1016/j.jlr.2024.100632
Hany F Sobhi, Kelly E Mercer, Renny S Lan, Laxmi Yeruva, Gabriella A M Ten Have, Nicolaas E P Deutz, Brian D Piccolo, Jean Debédat, Lindsay M Pack, Sean H Adams
{"title":"Novel odd-chain cyclopropane fatty acids: detection in a mammalian lipidome and uptake by hepatosplanchnic tissues.","authors":"Hany F Sobhi, Kelly E Mercer, Renny S Lan, Laxmi Yeruva, Gabriella A M Ten Have, Nicolaas E P Deutz, Brian D Piccolo, Jean Debédat, Lindsay M Pack, Sean H Adams","doi":"10.1016/j.jlr.2024.100632","DOIUrl":"10.1016/j.jlr.2024.100632","url":null,"abstract":"<p><p>Microbe-produced molecules (xenometabolites) found in foods or produced by gut microbiota are increasingly implicated in microbe-microbe and microbe-host communication. Xenolipids, in particular, are a class of metabolites for which the full catalog remains to be elaborated in mammalian systems. We and others have observed that cis-3,4-methylene-heptanoylcarnitine is a lipid derivative that is one of the most abundant medium-chain acylcarnitines in human blood, hypothesized to be a product of incomplete β-oxidation of one or more \"odd-chain\" long-chain cyclopropane fatty acids (CpFAs). We deduced two possible candidates, cis-11,12-methylene-pentadecanoic acid (cis-11,12-MPD) and cis-13,14-methylene-heptadecanoic acid (cis-13,14-MHD). Authentic standards were synthesized: cis-11-pentadecenoic acid and cis-13-heptadecenoic acid were generated (using Jones reagent) from cis-11-pentadecene-1-ol and cis-13-heptadecene-1-ol, respectively, and these were converted to CpFAs via a reaction involving diiodomethane. Using these standards in mass spectrometry analyses, we determined the presence/absence of cis-11,12-MPD and cis-13,14-MHD in archived piglet biospecimens. Both CpFAs were detected in rectal contents of sow and soy-fed piglets. Archived mass spectra were analyzed post hoc from a second independent study that used tissue-specific catheterization to monitor net metabolite flux in growing pigs. This confirmed the presence of both CpFAs in plasma and revealed a significant net uptake of the odd-chain CpFAs across the splanchnic tissue bed and liver. The results confirm that the novel xenolipids cis-11,12-MPD and cis-13,14-MHD can be components of the mammalian lipidome and are viable candidate precursors of cis-3,4-methylene-heptanoylcarnitine produced from partial β-oxidation in liver or other tissues.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100632"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11439845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142055757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modification in mitochondrial function is associated with the FADS1 variant and its interaction with alpha-linolenic acid-enriched diet-An exploratory study. 线粒体功能的改变与 FADS1 变异及其与富含α-亚麻酸饮食的相互作用有关--一项探索性研究。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-10-01 Epub Date: 2024-08-31 DOI: 10.1016/j.jlr.2024.100638
Maija Vaittinen, Mariana Ilha, Ratika Sehgal, Maria A Lankinen, Jyrki Ågren, Pirjo Käkelä, Kirsi A Virtanen, Markku Laakso, Ursula Schwab, Jussi Pihlajamäki
{"title":"Modification in mitochondrial function is associated with the FADS1 variant and its interaction with alpha-linolenic acid-enriched diet-An exploratory study.","authors":"Maija Vaittinen, Mariana Ilha, Ratika Sehgal, Maria A Lankinen, Jyrki Ågren, Pirjo Käkelä, Kirsi A Virtanen, Markku Laakso, Ursula Schwab, Jussi Pihlajamäki","doi":"10.1016/j.jlr.2024.100638","DOIUrl":"10.1016/j.jlr.2024.100638","url":null,"abstract":"<p><p>Fatty acid desaturase (FADS1) variant-rs174550 strongly regulates polyunsaturated fatty acid (PUFA) biosynthesis. Additionally, the FADS1 is related to mitochondrial function. Thus, we investigated whether changes in mitochondrial function are associated with the genetic variation in FADS1 (rs174550) in human adipocytes isolated from individuals consuming diets enriched with either dietary alpha-linolenic (ALA) or linoleic acid (LA). Two cohorts of men homozygous for the genotype of FADS1 (rs174550) were studied: FADSDIET2 dietary intervention study with ALA- and LA-enriched diets and Kuopio Obesity Surgery study (KOBS), respectively. We could demonstrate that differentiated human adipose-derived stromal cells from subjects with the TT genotype had higher mitochondrial metabolism compared with subjects with the CC genotype of FADS1-rs174550 in the FADSDIET2. Responses to PUFA-enriched diets differed between the genotypes of FADS1-rs174550, showing that ALA, but not LA, -enriched diet stimulated mitochondrial metabolism more in subjects with the CC genotype when compared with subjects with the TT genotype. ALA, but not LA, proportion in plasma phospholipid fraction correlated positively with adipose tissue mitochondrial-DNA amount in subjects with the CC genotype of FADS1-rs174550 in the KOBS. These findings demonstrate that the FADS1-rs174550 is associated with modification in mitochondrial function in human adipocytes. Additionally, subjects with the CC genotype, when compared with the TT genotype, benefit more from the ALA-enriched diet, leading to enhanced energy metabolism in human adipocytes. Altogether, the FADS1-rs174550 could be a genetic marker to identify subjects who are most suitable to receive dietary PUFA supplementation, establishing also a personalized therapeutic strategy to improve mitochondrial function in metabolic diseases.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100638"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11459653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142108203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Etomoxir: an old dog with new tricks. Etomoxir:老狗出新招
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-08-02 DOI: 10.1016/j.jlr.2024.100604
Reagan M McGuffee, Kyle S McCommis, David A Ford
{"title":"Etomoxir: an old dog with new tricks.","authors":"Reagan M McGuffee, Kyle S McCommis, David A Ford","doi":"10.1016/j.jlr.2024.100604","DOIUrl":"10.1016/j.jlr.2024.100604","url":null,"abstract":"","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100604"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11395757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141878859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lipidomic and metabolomic changes in community-acquired and COVID-19 pneumonia. 社区获得性肺炎和 COVID-19 肺炎的脂质体和代谢组变化
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-08-21 DOI: 10.1016/j.jlr.2024.100622
Mireia Saballs, Sandra Parra, Neus Martínez, Nuria Amigo, Lydia Cabau, Simona Iftimie, Raul Pavon, Xavi Gabaldó, Xavier Correig, Silvia Paredes, Josep Maria Vallvé, Antoni Castro
{"title":"Lipidomic and metabolomic changes in community-acquired and COVID-19 pneumonia.","authors":"Mireia Saballs, Sandra Parra, Neus Martínez, Nuria Amigo, Lydia Cabau, Simona Iftimie, Raul Pavon, Xavi Gabaldó, Xavier Correig, Silvia Paredes, Josep Maria Vallvé, Antoni Castro","doi":"10.1016/j.jlr.2024.100622","DOIUrl":"10.1016/j.jlr.2024.100622","url":null,"abstract":"<p><p>This prospective observational study compared the 1H NMR blood lipidomes and metabolomes of 71 patients with community-acquired pneumonia (CAP), 75 patients with COVID-19 pneumonia, and 75 healthy controls (matched by age and sex) to identify potential biomarkers and pathways associated with respiratory infections. Both pneumonia groups had comparable severity indices, including mortality, invasive mechanical ventilation, and intensive care unit admission rates. Patients with COVID-19 pneumonia exhibited more pronounced hypolipidemia, with significantly lower levels of total cholesterol and LDL-c compared to patients with CAP. Atherogenic lipoprotein subclasses (VLDL-cholesterol, IDL-cholesterol, IDL-triglyceride, and LDL-triglyceride/LDL-cholesterol) were significantly increased in severe cases of both pneumonia types, while lower HDL-c and small, dense HDL particles were associated with more severe illness. Both infected groups showed decreased esterified cholesterol and increased triglycerides, along with reduced phosphatidylcholine, lysophosphatidylcholine, PUFA, omega-3 fatty acids, and DHA. Additionally, infected patients had elevated levels of glucose, lactate, 3-hydroxybutyrate, and acetone, which are linked to inflammation, hypoxemia, and sepsis. Increased levels of branched-chain amino acids, alanine, glycine, and creatine, which are involved in energy metabolism and protein catabolism, were also observed. Neurotransmitter synthesis metabolites like histidine and glutamate were higher in infected patients, especially those with COVID-19. Notably, severe infections showed a significant decrease in glutamine, essential for lymphocyte and macrophage energy. The severity of COVID-19 pneumonia was also associated with elevated glycoprotein levels (glycoprotein A, glycoprotein B, and glycoprotein F), indicating an inflammatory state. These findings suggest that metabolomic and lipidomic changes in pneumonia are connected to bioenergetic pathways regulating the immune response.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100622"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11422144/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142000045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polyunsaturated fatty acids stimulate immunity and eicosanoid production in Drosophila melanogaster. 多不饱和脂肪酸刺激黑腹果蝇的免疫力和类二十酸的产生。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-07-26 DOI: 10.1016/j.jlr.2024.100608
Pakeeza Azizpor, Ogadinma K Okakpu, Sophia C Parks, Diego Chavez, Fayez Eyabi, Stephanie Martinez-Beltran, Susan Nguyen, Adler R Dillman
{"title":"Polyunsaturated fatty acids stimulate immunity and eicosanoid production in Drosophila melanogaster.","authors":"Pakeeza Azizpor, Ogadinma K Okakpu, Sophia C Parks, Diego Chavez, Fayez Eyabi, Stephanie Martinez-Beltran, Susan Nguyen, Adler R Dillman","doi":"10.1016/j.jlr.2024.100608","DOIUrl":"10.1016/j.jlr.2024.100608","url":null,"abstract":"<p><p>Eicosanoids are a class of molecules derived from C20 polyunsaturated fatty acids (PUFAs) that play a vital role in mammalian and insect biological systems, including development, reproduction, and immunity. Recent research has shown that insects have significant but lower levels of C20 PUFAs in circulation in comparison to C18 PUFAs. It has been previously hypothesized in insects that eicosanoids are synthesized from C18 precursors, such as linoleic acid (LA), to produce downstream eicosanoids. In this study, we show that introduction of arachidonic acid (AA) stimulates production of cyclooxygenase, lipoxygenase, and cytochrome P450-derived eicosanoids. Downstream immune readouts showed that LA stimulates phagocytosis by hemocytes, while both LA and AA stimulate increased antimicrobial peptide production when D. melanogaster is exposed to a heat-killed bacterial pathogen. In totality, this work identifies PUFAs that are involved in insect immunity and adds evidence to the notion that Drosophila utilizes immunostimulatory lipid signaling to mitigate bacterial infections. Our understanding of immune signaling in the fly and its analogies to mammalian systems will increase the power and value of Drosophila as a model organism in immune studies.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100608"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11386307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pioglitazone alleviates lacrimal gland impairments induced by high-fat diet by suppressing M1 polarization. 吡格列酮通过抑制 M1 极化减轻高脂饮食引起的泪腺损伤。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-07-26 DOI: 10.1016/j.jlr.2024.100606
Yu-Qing Chen, Yu-Chao Shao, Rui-Li Wei
{"title":"Pioglitazone alleviates lacrimal gland impairments induced by high-fat diet by suppressing M1 polarization.","authors":"Yu-Qing Chen, Yu-Chao Shao, Rui-Li Wei","doi":"10.1016/j.jlr.2024.100606","DOIUrl":"10.1016/j.jlr.2024.100606","url":null,"abstract":"<p><p>A high-fat diet (HFD) contributes to the pathogenesis of various inflammatory and metabolic diseases. Previous research confirms that under HFD conditions, the extraorbital lacrimal glands (ELGs) can be impaired, with significant infiltration of pro-inflammatory macrophages (Mps). However, the relationship between HFD and Mps polarization in the ELGs remains unexplored. We first identified and validated the differential expression of PPAR-γ in murine ELGs fed ND and HFD through RNA sequencing. Tear secretion was measured using the Schirmer test. Lipid droplet deposition within the ELGs was observed through Oil Red O staining and transmission electron microscopy. Mps phenotypes were determined through quantitative RT-PCR, immunofluorescence, and flow cytometric analysis. An in vitro high-fat culture system for Mps was established using palmitic acid (PA), with supernatants collected for co-culture with lacrimal gland acinar cells. Gene expression was determined through ELISA, immunofluorescence, immunohistochemistry, quantitative RT-PCR, and Western blot analysis. Pioglitazone reduced M1-predominant infiltration induced by HFD by increasing PPAR-γ levels in ELGs, thereby alleviating lipid deposition and enhancing tear secretion. In vitro tests indicated that PPAR-γ agonist shifted Mps from M1-predominant to M2-predominant phenotype in PA-induced Mps, reducing lipid synthesis in LGACs and promoting lipid catabolism, thus alleviating lipid metabolic disorders within ELGs. Conversely, the PPAR-γ antagonist induced opposite effects. In summary, the lacrimal gland is highly sensitive to high-fat and lipid metabolic disorders. Downregulation of PPAR-γ expression in ELGs induces Mps polarization toward predominantly M1 phenotype, leading to lipid metabolic disorder and inflammatory responses via the NF-κb/ERK/JNK/P38 pathway.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100606"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11386124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SCD4 deficiency decreases cardiac steatosis and prevents cardiac remodeling in mice fed a high-fat diet. 缺乏 SCD4 会减轻高脂饮食小鼠的心脏脂肪变性并防止心脏重塑。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-07-31 DOI: 10.1016/j.jlr.2024.100612
Marcin Wolosiewicz, Volodymyr V Balatskyi, Monika K Duda, Anna Filip, James M Ntambi, Viktor O Navrulin, Pawel Dobrzyn
{"title":"SCD4 deficiency decreases cardiac steatosis and prevents cardiac remodeling in mice fed a high-fat diet.","authors":"Marcin Wolosiewicz, Volodymyr V Balatskyi, Monika K Duda, Anna Filip, James M Ntambi, Viktor O Navrulin, Pawel Dobrzyn","doi":"10.1016/j.jlr.2024.100612","DOIUrl":"10.1016/j.jlr.2024.100612","url":null,"abstract":"<p><p>Stearoyl-CoA desaturase (SCD) is a lipogenic enzyme that catalyzes formation of the first double bond in the carbon chain of saturated fatty acids. Four isoforms of SCD have been identified in mice, the most poorly characterized of which is SCD4, which is cardiac-specific. In the present study, we investigated the role of SCD4 in systemic and cardiac metabolism. We used WT and global SCD4 KO mice that were fed standard laboratory chow or a high-fat diet (HFD). SCD4 deficiency reduced body adiposity and decreased hyperinsulinemia and hypercholesterolemia in HFD-fed mice. The loss of SCD4 preserved heart morphology in the HFD condition. Lipid accumulation decreased in the myocardium in SCD4-deficient mice and in HL-1 cardiomyocytes with knocked out Scd4 expression. This was associated with an increase in the rate of lipolysis and, more specifically, adipose triglyceride lipase (ATGL) activity. Possible mechanisms of ATGL activation by SCD4 deficiency include lower protein levels of the ATGL inhibitor G0/G1 switch protein 2 and greater activation by protein kinase A under lipid overload conditions. Moreover, we observed higher intracellular Ca<sup>2+</sup> levels in HL-1 cells with silenced Scd4 expression. This may explain the activation of protein kinase A in response to higher Ca<sup>2+</sup> levels. Additionally, the loss of SCD4 inhibited mitochondrial enlargement, NADH overactivation, and reactive oxygen species overproduction in the heart in HFD-fed mice. In conclusion, SCD4 deficiency activated lipolysis, resulting in a reduction of cardiac steatosis, prevented the induction of left ventricular hypertrophy, and reduced reactive oxygen species levels in the heart in HFD-fed mice.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100612"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11402454/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141878861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The lipidomics reporting checklist a framework for transparency of lipidomic experiments and repurposing resource data. 脂质组学报告核对表 脂质组学实验透明度和资源数据再利用的框架。
IF 5 2区 医学
Journal of Lipid Research Pub Date : 2024-09-01 Epub Date: 2024-08-14 DOI: 10.1016/j.jlr.2024.100621
Dominik Kopczynski, Christer S Ejsing, Jeffrey G McDonald, Takeshi Bamba, Erin S Baker, Justine Bertrand-Michel, Britta Brügger, Cristina Coman, Shane R Ellis, Timothy J Garrett, William J Griffiths, Xue Li Guan, Xianlin Han, Marcus Höring, Michal Holčapek, Nils Hoffmann, Kevin Huynh, Rainer Lehmann, Jace W Jones, Rima Kaddurah-Daouk, Harald C Köfeler, Peter J Meikle, Thomas O Metz, Valerie B O'Donnell, Daisuke Saigusa, Dominik Schwudke, Andrej Shevchenko, Federico Torta, Juan Antonio Vizcaíno, Ruth Welti, Markus R Wenk, Denise Wolrab, Yu Xia, Kim Ekroos, Robert Ahrends, Gerhard Liebisch
{"title":"The lipidomics reporting checklist a framework for transparency of lipidomic experiments and repurposing resource data.","authors":"Dominik Kopczynski, Christer S Ejsing, Jeffrey G McDonald, Takeshi Bamba, Erin S Baker, Justine Bertrand-Michel, Britta Brügger, Cristina Coman, Shane R Ellis, Timothy J Garrett, William J Griffiths, Xue Li Guan, Xianlin Han, Marcus Höring, Michal Holčapek, Nils Hoffmann, Kevin Huynh, Rainer Lehmann, Jace W Jones, Rima Kaddurah-Daouk, Harald C Köfeler, Peter J Meikle, Thomas O Metz, Valerie B O'Donnell, Daisuke Saigusa, Dominik Schwudke, Andrej Shevchenko, Federico Torta, Juan Antonio Vizcaíno, Ruth Welti, Markus R Wenk, Denise Wolrab, Yu Xia, Kim Ekroos, Robert Ahrends, Gerhard Liebisch","doi":"10.1016/j.jlr.2024.100621","DOIUrl":"10.1016/j.jlr.2024.100621","url":null,"abstract":"<p><p>The rapid increase in lipidomic studies has led to a collaborative effort within the community to establish standards and criteria for producing, documenting, and disseminating data. Creating a dynamic easy-to-use checklist that condenses key information about lipidomic experiments into common terminology will enhance the field's consistency, comparability, and repeatability. Here, we describe the structure and rationale of the established Lipidomics Minimal Reporting Checklist to increase transparency in lipidomics research.</p>","PeriodicalId":16209,"journal":{"name":"Journal of Lipid Research","volume":" ","pages":"100621"},"PeriodicalIF":5.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11417233/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141995865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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