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Unsihuay D, Hu H, Qiu J, Latorre-Palomino A, Yang M, Yue F, Yin R, Kuang S, Laskin J. Multimodal high-resolution nano-DESI MSI and immunofluorescence imaging reveal molecular signatures of skeletal muscle fiber types. Chem Sci 2023; 14:4070-4082. [PMID: 37063787 PMCID: PMC10094364 DOI: 10.1039/d2sc06020e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 03/22/2023] [Indexed: 03/31/2023] Open
Abstract
The skeletal muscle is a highly heterogeneous tissue comprised of different fiber types with varying contractile and metabolic properties. The complexity in the analysis of skeletal muscle fibers associated with their small size (30-50 μm) and mosaic-like distribution across the tissue tnecessitates the use of high-resolution imaging to differentiate between fiber types. Herein, we use a multimodal approach to characterize the chemical composition of skeletal fibers in a limb muscle, the gastrocnemius. Specifically, we combine high-resolution nanospray desorption electrospray ionization (nano-DESI) mass spectrometry imaging (MSI) with immunofluorescence (IF)-based fiber type identification. Computational image registration and segmentation approaches are used to integrate the information obtained with both techniques. Our results indicate that the transition between oxidative and glycolytic fibers is associated with shallow chemical gradients (<2.5 fold change in signals). Interestingly, we did not find any fiber type-specific molecule. We hypothesize that these findings might be linked to muscle plasticity thereby facilitating a switch in the metabolic properties of fibers in response to different conditions such as exercise and diet, among others. Despite the shallow chemical gradients, cardiolipins (CLs), acylcarnitines (CAR), monoglycerides (MGs), fatty acids, highly polyunsaturated phospholipids, and oxidized phospholipids, were identified as molecular signatures of oxidative metabolism. In contrast, histidine-related compounds were found as molecular signatures of glycolytic fibers. Additionally, the presence of highly polyunsaturated acyl chains in phospholipids was found in oxidative fibers whereas more saturated acyl chains in phospholipids were found in glycolytic fibers which suggests an effect of the membrane fluidity on the metabolic properties of skeletal myofibers.
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Affiliation(s)
- Daisy Unsihuay
- Department of Chemistry, Purdue University West Lafayette IN 47907 USA
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Philadelphia PA 19104 USA
| | - Hang Hu
- Department of Chemistry, Purdue University West Lafayette IN 47907 USA
| | - Jiamin Qiu
- Department of Animal Sciences, Purdue University West Lafayette IN 47907 USA
| | | | - Manxi Yang
- Department of Chemistry, Purdue University West Lafayette IN 47907 USA
| | - Feng Yue
- Department of Animal Sciences, Purdue University West Lafayette IN 47907 USA
| | - Ruichuan Yin
- Department of Chemistry, Purdue University West Lafayette IN 47907 USA
| | - Shihuan Kuang
- Department of Animal Sciences, Purdue University West Lafayette IN 47907 USA
| | - Julia Laskin
- Department of Chemistry, Purdue University West Lafayette IN 47907 USA
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Furuichi Y, Goto-Inoue N, Uchida S, Masuda S, Manabe Y, Fujii NL. Stable isotope-labeled carnitine reveals its rapid transport into muscle cells and acetylation during contraction. Heliyon 2023; 9:e15281. [PMID: 37096007 PMCID: PMC10122011 DOI: 10.1016/j.heliyon.2023.e15281] [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: 07/14/2022] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/26/2023] Open
Abstract
Carnitine plays multiple roles in skeletal muscle metabolism, including fatty acid transport and buffering of excess acetyl-CoA in the mitochondria. The skeletal muscle cannot synthesize carnitine; therefore, carnitine must be taken up from the blood into the cytoplasm. Carnitine metabolism, its uptake into cells, and the subsequent reactions of carnitine are accelerated by muscle contraction. Isotope tracing enables the marking of target molecules and monitoring of tissue distribution. In this study, stable isotope-labeled carnitine tracing was combined with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) imaging to determine carnitine distribution in mouse skeletal muscle tissues. Deuterium-labeled carnitine (d3-carnitine) was intravenously injected into the mice and diffused to the skeletal muscles for 30 and 60 min. To examine whether muscle contraction changes the distribution of carnitine and its derivatives, unilateral in situ muscle contraction was performed; 60 min muscle contraction showed increased d3-carnitine and its derivative d3-acetylcarnitine in the muscle, indicating that carnitine uptake in cells is promptly converted to acetylcarnitine, consequently, buffering accumulated acetyl-CoA. While the endogenous carnitine was localized in the slow type fibers rather than fast type, the contraction-induced distributions of d3-carnitine and acetylcarnitine were not necessarily associated with muscle fiber type. In conclusion, the combination of isotope tracing and MALDI-MS imaging can reveal carnitine flux during muscle contraction and show the significance of carnitine in skeletal muscles.
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Affiliation(s)
- Yasuro Furuichi
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
- Corresponding author.
| | - Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, Kameino 1866, Fujisawa, Kanagawa, 252-0880, Japan
| | - Saki Uchida
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Shun Masuda
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Yasuko Manabe
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Nobuharu L. Fujii
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
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Goto-Inoue N, Morisasa M, Kimura K, Mori T, Furuichi Y, Manabe Y, Fujii NL. Mass spectrometry imaging reveals local metabolic changes in skeletal muscle due to chronic training. Biosci Biotechnol Biochem 2022; 86:730-738. [PMID: 35285857 DOI: 10.1093/bbb/zbac037] [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: 11/19/2021] [Accepted: 03/09/2022] [Indexed: 11/13/2022]
Abstract
Muscle atrophy is a major health problem that needs effective prevention and treatment approaches. Chronic exercise, an effective treatment strategy for atrophy, promotes muscle hypertrophy, which leads to dynamic metabolic changes; however, the metabolic changes vary among myofiber types. To investigate local metabolic changes due to chronic exercise, we utilized comprehensive proteome and mass spectrometry (MS) imaging analyses. Our training model exhibited hypertrophic features only in glycolytic myofibers. The proteome analyses demonstrated that exercise promoted anabolic pathways, such as protein synthesis, and significant changes in lipid metabolism, but not in glucose metabolism. Furthermore, the fundamental energy sources, glycogen, neutral lipids, and ATP, were sensitive to exercise, and the changes in these sources differed between glycolytic and oxidative myofibers. MS imaging revealed that the lipid composition differs among myofibers; arachidonic acid might be an effective target for promoting lipid metabolism during muscle hypertrophy in oxidative myofibers.
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Affiliation(s)
- Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Mizuki Morisasa
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Keisuke Kimura
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Tsukasa Mori
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, Japan
| | - Yasuro Furuichi
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
| | - Yasuko Manabe
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
| | - Nobuharu L Fujii
- Health Promotion Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa Hachioji, Tokyo, Japan
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Ohmura H, Mukai K, Takahashi Y, Takahashi T. Metabolomic analysis of skeletal muscle before and after strenuous exercise to fatigue. Sci Rep 2021; 11:11261. [PMID: 34045613 PMCID: PMC8160181 DOI: 10.1038/s41598-021-90834-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 05/17/2021] [Indexed: 11/23/2022] Open
Abstract
Thoroughbreds have high maximal oxygen consumption and show hypoxemia and hypercapnia during intense exercise, suggesting that the peripheral environment in skeletal muscle may be severe. Changes in metabolites following extreme alterations in the muscle environment in horses after exercise may provide useful evidence. We compared the muscle metabolites before and after supramaximal exercise to fatigue in horses. Six well-trained horses ran until exhaustion in incremental exercise tests. Biopsy samples were obtained from the gluteus medius muscle before and immediately after exercise for capillary electrophoresis–mass spectrometry analysis. In the incremental exercise test, the total running time and speed of the last step were 10.4 ± 1.3 (mean ± standard deviation) min and 12.7 ± 0.5 m/s, respectively. Of 73 metabolites, 18 and 11 were significantly increased and decreased after exercise, respectively. The heat map of the hierarchical cluster analysis of muscle metabolites showed that changes in metabolites were clearly distinguishable before and after exercise. Strenuous exercise increased many metabolites in the glycolytic pathway and the tricarboxylic acid cycle in skeletal muscle. Targeted metabolomic analysis of skeletal muscle may clarify the intramuscular environment caused by exercise and explain the response of working muscles to strenuous exercise that induces hypoxemia and hypercapnia in Thoroughbred horses.
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Affiliation(s)
- Hajime Ohmura
- Sports Science Division, Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke-shi, Tochigi, 329-0412, Japan.
| | - Kazutaka Mukai
- Sports Science Division, Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke-shi, Tochigi, 329-0412, Japan
| | - Yuji Takahashi
- Sports Science Division, Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke-shi, Tochigi, 329-0412, Japan
| | - Toshiyuki Takahashi
- Sports Science Division, Equine Research Institute, Japan Racing Association, 1400-4 Shiba, Shimotsuke-shi, Tochigi, 329-0412, Japan
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Goto-Inoue N, Sato T, Morisasa M, Igarashi Y, Mori T. Characterization of Metabolite Compositions in Wild and Farmed Red Sea Bream ( Pagrus major) Using Mass Spectrometry Imaging. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7197-7203. [PMID: 31240934 DOI: 10.1021/acs.jafc.9b03205] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nutritional profiles and consumer preferences differ between wild and farmed fish, and identification of fish sources can be difficult. We analyzed the metabolite molecules of wild and farmed red sea bream ( Pagrus major) to identify specific metabolic differences. The total lipid content and molecular composition of wild and farmed red sea bream muscles were analyzed using thin-layer chromatography and mass spectrometry imaging. Triacylglycerol levels were significantly higher in farmed fish. Wild fish contained saturated-fatty-acid-containing triacylglycerols as a major molecular species, while docosahexaenoic-acid-containing triacylglycerol levels were significantly higher in farmed fish than in wild fish. The localization of each muscle-fiber-type-specific marker demonstrated that wild fish exhibit myosin heavy chain (MHC)-type-IIb-specific phospholipids, while farmed fish exhibit MHC-type-IIa-specific phospholipids in their white muscle. Sodium dodecyl sulfate polyacrylamide gel electrophoresis analyses separated the identified myosins and revealed that farmed fish possess additional myosin isoforms when compared to wild fish. In addition, we found a farmed-fish-specific distribution of anserine in their white muscle. These molecules can be used as new molecular markers for determining the geographic origins of wild versus farmed red sea bream.
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Affiliation(s)
- Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences , Nihon University , 1866 Kameino , Fujisawa , Kanagawa 252-0880 , Japan
| | - Tomohiko Sato
- Department of Marine Science and Resources, College of Bioresource Sciences , Nihon University , 1866 Kameino , Fujisawa , Kanagawa 252-0880 , Japan
| | - Mizuki Morisasa
- Department of Marine Science and Resources, College of Bioresource Sciences , Nihon University , 1866 Kameino , Fujisawa , Kanagawa 252-0880 , Japan
| | - Yuika Igarashi
- Department of Marine Science and Resources, College of Bioresource Sciences , Nihon University , 1866 Kameino , Fujisawa , Kanagawa 252-0880 , Japan
| | - Tsukasa Mori
- Department of Marine Science and Resources, College of Bioresource Sciences , Nihon University , 1866 Kameino , Fujisawa , Kanagawa 252-0880 , Japan
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6
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Goto-Inoue N, Morisasa M, Machida K, Furuichi Y, Fujii NL, Miura S, Mori T. Characterization of myofiber-type-specific molecules using mass spectrometry imaging. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2019; 33:185-192. [PMID: 30367536 DOI: 10.1002/rcm.8319] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/10/2018] [Accepted: 10/19/2018] [Indexed: 05/18/2023]
Abstract
RATIONALE In skeletal muscles, there are four myofiber types, Types I, IIa, IIx, and IIb, which show different contraction characteristics and have different metabolic statuses. To understand muscle function, it is necessary to analyze myofiber-specific metabolic changes. However, these fibers are heterogeneous and are hard to discriminate by conventional analyses using tissue extracts. In this study, we found myofiber-specific molecules and molecular markers of other cells such as smooth muscle cells, fat cells, and motor neurons, and visualized them within muscle sections. METHODS We used three different muscle tissues, namely extensor digitorum longus, soleus, and gastrocnemius tissues, from ICR mice. After the muscles had been harvested, cross-sections were prepared using a cryostat and analyzed using matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI), and conventional immunofluorescence imaging. RESULTS By comparing the MALDI MSI results with the immunofluorescence imaging results, we were able to identify each fiber and cell-specific ion. It was especially important that we could find Type IIa and IIb specific ions, because these were difficult to distinguish. CONCLUSIONS Through MSI analyses, we performed a comprehensive survey to identify cell- and myofiber-specific molecular markers. In conclusion, we assigned muscle fiber Type I, IIa, and IIb-specific molecular ions at m/z 856.6, 872.6, and 683.8, respectively. These molecular markers might be useful for verifying changes that occur due to exercise and/or disease.
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MESH Headings
- Animals
- Biomarkers/analysis
- Biomarkers/metabolism
- Chromatography, Thin Layer
- Diglycerides/analysis
- Diglycerides/metabolism
- Image Processing, Computer-Assisted
- Lipids/analysis
- Male
- Mice, Inbred ICR
- Muscle Fibers, Skeletal/chemistry
- Muscle Fibers, Skeletal/metabolism
- Muscle, Skeletal/chemistry
- Muscle, Skeletal/metabolism
- Muscle, Smooth/chemistry
- Muscle, Smooth/metabolism
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods
- Tandem Mass Spectrometry
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Affiliation(s)
- Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan
| | - Mizuki Morisasa
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan
| | - Kazumasa Machida
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan
| | - Yasuro Furuichi
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Nobuharu L Fujii
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1, Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan
| | - Shinji Miura
- Laboratories of Nutritional Biochemistry, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Suruga-ku, Shizuoka, 422-8526, Japan
| | - Tsukasa Mori
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan
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7
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Davison G, Vinaixa M, McGovern R, Beltran A, Novials A, Correig X, McClean C. Metabolomic Response to Acute Hypoxic Exercise and Recovery in Adult Males. Front Physiol 2018; 9:1682. [PMID: 30534085 PMCID: PMC6275205 DOI: 10.3389/fphys.2018.01682] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 11/08/2018] [Indexed: 12/28/2022] Open
Abstract
Metabolomics is a relatively new “omics” approach used to characterize metabolites in a biological system at baseline and following a diversity of stimuli. However, the metabolomic response to exercise in hypoxia currently remains unknown. To examine this, 24 male participants completed 1 h of exercise at a workload corresponding to 75% of pre-determined O2max in hypoxia (Fio2 = 0.16%), and repeated in normoxia (Fio2 = 0.21%), while pre- and post-exercise and 3 h post-exercise metabolites were analyzed using a LC ESI-qTOF-MS untargeted metabolomics approach in serum samples. Exercise in hypoxia and in normoxia independently increased metabolism as shown by a change in a combination of twenty-two metabolites associated with lipid metabolism (p < 0.05, pre vs. post-exercise), though hypoxia per se did not induce a greater metabolic change when compared with normoxia (p > 0.05). Recovery from exercise in hypoxia independently decreased seventeen metabolites associated with lipid metabolism (p < 0.05, post vs. 3 h post-exercise), compared with twenty-two metabolites in normoxia (p < 0.05, post vs. 3 h post-exercise). Twenty-six metabolites were identified as responders to exercise and recovery (pooled hypoxia and normoxia pre vs. recovery, p < 0.05), including metabolites associated with purine metabolism (adenine, adenosine and hypoxanthine), the amino acid phenylalanine, and several acylcarnitine molecules. Our novel data provides preliminary evidence of subtle metabolic differences to exercise and recovery in hypoxia and normoxia. Specifically, exercise in hypoxia activates metabolic pathways aligned to purine and lipid metabolism, but this effect is not selectively different from exercise in normoxia. We also show that exercise per se can activate pathways associated with lipid, protein and purine nucleotide metabolism.
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Affiliation(s)
- Gareth Davison
- Sport and Exercise Science Research Institute, Ulster University, Antrim, United Kingdom
| | - Maria Vinaixa
- Metabolomics Platform of the Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders, IISPV - Rovira i Virgili University, Tarragona, Spain
| | - Rose McGovern
- Sport and Exercise Science Research Institute, Ulster University, Antrim, United Kingdom
| | - Antoni Beltran
- Metabolomics Platform of the Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders, IISPV - Rovira i Virgili University, Tarragona, Spain
| | - Anna Novials
- Department of Endocrinology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic de Barcelona, Barcelona, Spain
| | - Xavier Correig
- Metabolomics Platform of the Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders, IISPV - Rovira i Virgili University, Tarragona, Spain
| | - Conor McClean
- Sport and Exercise Science Research Institute, Ulster University, Antrim, United Kingdom
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8
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The relationship between muscle fiber characteristics and some meat quality parameters in Turkish native sheep breeds. Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2017.03.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Mandai S, Furukawa S, Kodaka M, Hata Y, Mori T, Nomura N, Ando F, Mori Y, Takahashi D, Yoshizaki Y, Kasagi Y, Arai Y, Sasaki E, Yoshida S, Furuichi Y, Fujii NL, Sohara E, Rai T, Uchida S. Loop diuretics affect skeletal myoblast differentiation and exercise-induced muscle hypertrophy. Sci Rep 2017; 7:46369. [PMID: 28417963 PMCID: PMC5394462 DOI: 10.1038/srep46369] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/15/2017] [Indexed: 12/21/2022] Open
Abstract
Muscle wasting or sarcopenia contributes to morbidity and mortality in patients with cancer, renal failure, or heart failure, and in elderly individuals. Na+-K+-2Cl− cotransporter 1 (NKCC1) is highly expressed in mammalian skeletal muscle, where it contributes to the generation of membrane ion currents and potential. However, the physiologic function of NKCC1 in myogenesis is unclear. We investigated this issue using the NKCC1 inhibitors bumetanide and furosemide, which are commonly used loop diuretics. NKCC1 protein levels increased during C2C12 murine skeletal myoblast differentiation, similarly to those of the myogenic markers myogenin and myosin heavy chain (MHC). NKCC1 inhibitors markedly suppressed myoblast fusion into myotubes and the expression of myogenin and MHC. Furthermore, phosphorylated and total NKCC1 levels were elevated in mouse skeletal muscles after 6 weeks’ voluntary wheel running. Immunofluorescence analyses of myofiber cross-sections revealed more large myofibers after exercise, but this was impaired by daily intraperitoneal bumetanide injections (0.2 or 10 mg/kg/day). NKCC1 plays an essential role in myogenesis and exercise-induced skeletal muscle hypertrophy, and sarcopenia in patients with renal or heart failure may be attributable to treatment with loop diuretics.
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Affiliation(s)
- Shintaro Mandai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Susumu Furukawa
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Manami Kodaka
- Department of Medical Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yutaka Hata
- Department of Medical Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Takayasu Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Naohiro Nomura
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Fumiaki Ando
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yutaro Mori
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Daiei Takahashi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yuki Yoshizaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yuri Kasagi
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yohei Arai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Emi Sasaki
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Sayaka Yoshida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Yasuro Furuichi
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji City, Tokyo 192-0397, Tokyo, Japan
| | - Nobuharu L Fujii
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji City, Tokyo 192-0397, Tokyo, Japan
| | - Eisei Sohara
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Tatemitsu Rai
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
| | - Shinichi Uchida
- Department of Nephrology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8519, Japan
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10
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Imaging mass spectrometry for the precise design of antibody-drug conjugates. Sci Rep 2016; 6:24954. [PMID: 27098163 PMCID: PMC4838941 DOI: 10.1038/srep24954] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 04/07/2016] [Indexed: 01/25/2023] Open
Abstract
Antibody-drug conjugates (ADCs) are a class of immunotherapeutic agents that enable the delivery of cytotoxic drugs to target malignant cells. Because various cancers and tumour vascular endothelia strongly express anti-human tissue factor (TF), we prepared ADCs consisting of a TF-specific monoclonal antibody (mAb) linked to the anticancer agent (ACA) monomethyl auristatin E (MMAE) via a valine-citrulline (Val-Cit) linker (human TF ADC). Identifying the most efficient drug design in advance is difficult because ADCs have complicated structures. The best method of assessing ADCs is to examine their selectivity and efficiency in releasing and distributing the ACA within tumour tissue. Matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) can be used to directly detect the distributions of native molecules within tumour tissues. Here, MALDI-IMS enabled the identification of the intratumour distribution of MMAE released from the ADC. In conclusion, MALDI-IMS is a useful tool to assess ADCs and facilitate the optimization of ADC design.
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11
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Hoene M, Li J, Li Y, Runge H, Zhao X, Häring HU, Lehmann R, Xu G, Weigert C. Muscle and liver-specific alterations in lipid and acylcarnitine metabolism after a single bout of exercise in mice. Sci Rep 2016; 6:22218. [PMID: 26916151 PMCID: PMC4768182 DOI: 10.1038/srep22218] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/04/2016] [Indexed: 12/26/2022] Open
Abstract
Intracellular lipid pools are highly dynamic and tissue-specific. Physical exercise is a strong physiologic modulator of lipid metabolism, but most studies focus on changes induced by long-term training. To assess the acute effects of endurance exercise, mice were subjected to one hour of treadmill running, and (13)C16-palmitate was applied to trace fatty acid incorporation in soleus and gastrocnemius muscle and liver. The amounts of carnitine, FFA, lysophospholipids and diacylglycerol and the post-exercise increase in acetylcarnitine were pronouncedly higher in soleus than in gastrocnemius. In the liver, exercise increased the content of lysophospholipids, plasmalogens and carnitine as well as transcript levels of the carnitine transporter. (13)C16-palmitate was detectable in several lipid and acylcarnitine species, with pronounced levels of tracer-derived palmitoylcarnitine in both muscles and a strikingly high incorporation into triacylglycerol and phosphatidylcholine in the liver. These data illustrate the high lipid storing activity of the liver immediately after exercise whereas in muscle, fatty acids are directed towards oxidation. The observed muscle-specific differences accentuate the need for single-muscle analyses as well as careful consideration of the particular muscle employed when studying lipid metabolism in mice. In addition, our results reveal that lysophospholipids and plasmalogens, potential lipid signalling molecules, are acutely regulated by physical exercise.
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Affiliation(s)
- Miriam Hoene
- Division of Clinical Chemistry and Pathobiochemistry, Department of Diagnostic Laboratory Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | - Jia Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yanjie Li
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Heike Runge
- Division of Clinical Chemistry and Pathobiochemistry, Department of Diagnostic Laboratory Medicine, University Hospital Tuebingen, Tuebingen, Germany
| | - Xinjie Zhao
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Hans-Ulrich Häring
- Division of Clinical Chemistry and Pathobiochemistry, Department of Diagnostic Laboratory Medicine, University Hospital Tuebingen, Tuebingen, Germany.,Department of Molecular Diabetology, Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Centre Munich at the University of Tuebingen, Tuebingen, Germany.,German Center for Diabetes Research (DZD), Tuebingen, Germany
| | - Rainer Lehmann
- Division of Clinical Chemistry and Pathobiochemistry, Department of Diagnostic Laboratory Medicine, University Hospital Tuebingen, Tuebingen, Germany.,Department of Molecular Diabetology, Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Centre Munich at the University of Tuebingen, Tuebingen, Germany.,German Center for Diabetes Research (DZD), Tuebingen, Germany
| | - Guowang Xu
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Cora Weigert
- Division of Clinical Chemistry and Pathobiochemistry, Department of Diagnostic Laboratory Medicine, University Hospital Tuebingen, Tuebingen, Germany.,Department of Molecular Diabetology, Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Centre Munich at the University of Tuebingen, Tuebingen, Germany.,German Center for Diabetes Research (DZD), Tuebingen, Germany
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12
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Manabe Y, Fujii NL. Experimental research models for skeletal muscle contraction. ACTA ACUST UNITED AC 2016. [DOI: 10.7600/jpfsm.5.373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Yasuko Manabe
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University
| | - Nobuharu L. Fujii
- Department of Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University
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13
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He J, Quintana MT, Sullivan J, L Parry T, J Grevengoed T, Schisler JC, Hill JA, Yates CC, Mapanga RF, Essop MF, Stansfield WE, Bain JR, Newgard CB, Muehlbauer MJ, Han Y, Clarke BA, Willis MS. MuRF2 regulates PPARγ1 activity to protect against diabetic cardiomyopathy and enhance weight gain induced by a high fat diet. Cardiovasc Diabetol 2015; 14:97. [PMID: 26242235 PMCID: PMC4526192 DOI: 10.1186/s12933-015-0252-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 06/30/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND In diabetes mellitus the morbidity and mortality of cardiovascular disease is increased and represents an important independent mechanism by which heart disease is exacerbated. The pathogenesis of diabetic cardiomyopathy involves the enhanced activation of PPAR transcription factors, including PPARα, and to a lesser degree PPARβ and PPARγ1. How these transcription factors are regulated in the heart is largely unknown. Recent studies have described post-translational ubiquitination of PPARs as ways in which PPAR activity is inhibited in cancer. However, specific mechanisms in the heart have not previously been described. Recent studies have implicated the muscle-specific ubiquitin ligase muscle ring finger-2 (MuRF2) in inhibiting the nuclear transcription factor SRF. Initial studies of MuRF2-/- hearts revealed enhanced PPAR activity, leading to the hypothesis that MuRF2 regulates PPAR activity by post-translational ubiquitination. METHODS MuRF2-/- mice were challenged with a 26-week 60% fat diet designed to simulate obesity-mediated insulin resistance and diabetic cardiomyopathy. Mice were followed by conscious echocardiography, blood glucose, tissue triglyceride, glycogen levels, immunoblot analysis of intracellular signaling, heart and skeletal muscle morphometrics, and PPARα, PPARβ, and PPARγ1-regulated mRNA expression. RESULTS MuRF2 protein levels increase ~20% during the development of diabetic cardiomyopathy induced by high fat diet. Compared to littermate wildtype hearts, MuRF2-/- hearts exhibit an exaggerated diabetic cardiomyopathy, characterized by an early onset systolic dysfunction, larger left ventricular mass, and higher heart weight. MuRF2-/- hearts had significantly increased PPARα- and PPARγ1-regulated gene expression by RT-qPCR, consistent with MuRF2's regulation of these transcription factors in vivo. Mechanistically, MuRF2 mono-ubiquitinated PPARα and PPARγ1 in vitro, consistent with its non-degradatory role in diabetic cardiomyopathy. However, increasing MuRF2:PPARγ1 (>5:1) beyond physiological levels drove poly-ubiquitin-mediated degradation of PPARγ1 in vitro, indicating large MuRF2 increases may lead to PPAR degradation if found in other disease states. CONCLUSIONS Mutations in MuRF2 have been described to contribute to the severity of familial hypertrophic cardiomyopathy. The present study suggests that the lack of MuRF2, as found in these patients, can result in an exaggerated diabetic cardiomyopathy. These studies also identify MuRF2 as the first ubiquitin ligase to regulate cardiac PPARα and PPARγ1 activities in vivo via post-translational modification without degradation.
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Affiliation(s)
- Jun He
- Department of Pathology and Laboratory Medicine, University of North Carolina, 111 Mason Farm Road, MBRB 2340B, Chapel Hill, NC, USA. .,General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China.
| | - Megan T Quintana
- Department of Surgery, University of North Carolina, Chapel Hill, NC, USA.
| | - Jenyth Sullivan
- Department of Biology, University of North Carolina, Chapel Hill, NC, USA.
| | - Traci L Parry
- McAllister Heart Institute, University of North Carolina, 111 Mason Farm Road, MBRB 2340B, Chapel Hill, NC, USA.
| | - Trisha J Grevengoed
- Department of Nutrition, University of North Carolina, Chapel Hill, NC, USA.
| | - Jonathan C Schisler
- McAllister Heart Institute, University of North Carolina, 111 Mason Farm Road, MBRB 2340B, Chapel Hill, NC, USA. .,Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA.
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Cecelia C Yates
- Department of Health Promotions and Development, School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA.
| | - Rudo F Mapanga
- Cardio-Metabolic Research Group (CMRG), Department of Physiological Sciences, Stellenbosch University, Stellenbosch, 7600, South Africa.
| | - M Faadiel Essop
- Cardio-Metabolic Research Group (CMRG), Department of Physiological Sciences, Stellenbosch University, Stellenbosch, 7600, South Africa.
| | | | - James R Bain
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA. .,Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
| | - Christopher B Newgard
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA. .,Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
| | - Michael J Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA.
| | - Yipin Han
- East Chapel Hill High School, Chapel Hill, NC, USA.
| | - Brian A Clarke
- Novartis, Novartis Institutes for BioMedical Research, Inc., 400 Technology Square, Boston, MA, 601-4214, USA.
| | - Monte S Willis
- Department of Pathology and Laboratory Medicine, University of North Carolina, 111 Mason Farm Road, MBRB 2340B, Chapel Hill, NC, USA. .,McAllister Heart Institute, University of North Carolina, 111 Mason Farm Road, MBRB 2340B, Chapel Hill, NC, USA.
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14
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Quintana MT, He J, Sullivan J, Grevengoed T, Schisler J, Han Y, Hill JA, Yates CC, Stansfield WE, Mapanga RF, Essop MF, Muehlbauer MJ, Newgard CB, Bain JR, Willis MS. Muscle ring finger-3 protects against diabetic cardiomyopathy induced by a high fat diet. BMC Endocr Disord 2015; 15:36. [PMID: 26215257 PMCID: PMC4515942 DOI: 10.1186/s12902-015-0028-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The pathogenesis of diabetic cardiomyopathy (DCM) involves the enhanced activation of peroxisome proliferator activating receptor (PPAR) transcription factors, including the most prominent isoform in the heart, PPARα. In cancer cells and adipocytes, post-translational modification of PPARs have been identified, including ligand-dependent degradation of PPARs by specific ubiquitin ligases. However, the regulation of PPARs in cardiomyocytes and heart have not previously been identified. We recently identified that muscle ring finger-1 (MuRF1) and MuRF2 differentially inhibit PPAR activities by mono-ubiquitination, leading to the hypothesis that MuRF3 may regulate PPAR activity in vivo to regulate DCM. METHODS MuRF3-/- mice were challenged with 26 weeks 60% high fat diet to induce insulin resistance and DCM. Conscious echocardiography, blood glucose, tissue triglyceride, glycogen levels, immunoblot analysis of intracellular signaling, heart and skeletal muscle morphometrics, and PPARα, PPARβ, and PPARγ1 activities were assayed. RESULTS MuRF3-/- mice exhibited a premature systolic heart failure by 6 weeks high fat diet (vs. 12 weeks in MuRF3+/+). MuRF3-/- mice weighed significantly less than sibling-matched wildtype mice after 26 weeks HFD. These differences may be largely due to resistance to fat accumulation, as MRI analysis revealed MuRF3-/- mice had significantly less fat mass, but not lean body mass. In vitro ubiquitination assays identified MuRF3 mono-ubiquitinated PPARα and PPARγ1, but not PPARβ. CONCLUSIONS These findings suggest that MuRF3 helps stabilize cardiac PPARα and PPARγ1 in vivo to support resistance to the development of DCM. MuRF3 also plays an unexpected role in regulating fat storage despite being found only in striated muscle.
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Affiliation(s)
- Megan T Quintana
- Department of Surgery, University of North Carolina, Chapel Hill, NC, USA.
| | - Jun He
- Department of Pathology & Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA.
- General Hospital of Ningxia Medical University, Yinchuan, Ningxia, People's Republic of China.
| | - Jenyth Sullivan
- Department of Biology, University of North Carolina, Chapel Hill, NC, USA.
| | - Trisha Grevengoed
- Department of Nutrition, University of North Carolina, Chapel Hill, NC, USA.
| | - Jonathan Schisler
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC, USA.
| | - Yipin Han
- North Carolina State University, Department of Engineering, Raleigh, NC, USA.
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Cecelia C Yates
- Department of Health Promotions and Development, School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA.
| | | | - Rudo F Mapanga
- Cardio-Metabolic Research Group (CMRG), Department of Physiological Sciences, Stellenbosch University, Stellenbosch, 7600, South Africa.
| | - M Faadiel Essop
- Cardio-Metabolic Research Group (CMRG), Department of Physiological Sciences, Stellenbosch University, Stellenbosch, 7600, South Africa.
| | - Michael J Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA.
| | - Christopher B Newgard
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA.
- Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
| | - James R Bain
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC, USA.
- Division of Endocrinology, Metabolism, and Nutrition, Department of Medicine, Duke University Medical Center, Durham, NC, USA.
| | - Monte S Willis
- Department of Pathology & Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA.
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA.
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