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Qin X, Liu P, Jin L, Zhu K, Yang Y, Hou Z, Zhang H, Zheng Q. Exerkine β-aminoisobutyric acid protects against atrial structural remodeling and atrial fibrillation in obesity via activating AMPK signaling and improving insulin sensitivity. Biomed Pharmacother 2024; 171:116137. [PMID: 38219388 DOI: 10.1016/j.biopha.2024.116137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/24/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024] Open
Abstract
Moderate exercise decreases the risk for atrial fibrillation (AF), an effect which is probably mediated via exercise-stimulated release of exerkines. β-Aminoisobutyric acid (BAIBA), a novel exerkine, has been reported to provide protective benefits against many cardiovascular diseases, yet its role in AF remains elusive. Herein, using a mouse model of obesity-related AF through high-fat diet (HFD) feeding, we found that 12-week drinking administration of BAIBA (170 mg/kg/day) decreased AF susceptibility in obese mice. Atrial remodeling assessment showed that BAIBA attenuated obesity-induced atrial hypertrophy and interstitial fibrosis, thereby ablating the substrate for AF. Of note, to our knowledge, this is the first report of the direct association of BAIBA and hypertrophy. BAIBA has been reported to be a key regulator of glucose and lipid metabolism, and we found that BAIBA alleviated insulin resistance in obese mice. Transcriptional analysis of metabolism-related genes showed that BAIBA increased the transcription of fatty acids metabolism-related genes in the atria of lean mice but not in that of obese mice. Mechanistic investigation showed that BAIBA stimulated AMP-activated protein kinase (AMPK) signaling in the atria of obese mice and palmitic acid (PA)-treated neonatal rat cardiomyocytes (NRCM), whereas inhibition of AMPK via Compound C attenuated BAIBA-conferred cardioprotection against hypertrophy and insulin resistance in PA-treated NRCM. Collectively, BAIBA attenuates AF susceptibility in obese mice via activated AMPK signaling and resultant improvement of insulin sensitivity, thereby providing perspectives on the potential therapeutic role of BAIBA in AF treatment.
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Affiliation(s)
- Xinghua Qin
- Xi'an Key Laboratory of Special Medicine and Health Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China.
| | - Peng Liu
- Department of Cardiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Lingyan Jin
- Department of Cardiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Ke Zhu
- Xi'an Key Laboratory of Special Medicine and Health Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Yuanqing Yang
- Xi'an Key Laboratory of Special Medicine and Health Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
| | - Zuoxu Hou
- Department of Orthopedics, Shenzhen Hospital of Southern Medical University, Shenzhen 518000, China
| | - Huiliang Zhang
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Qiangsun Zheng
- Department of Cardiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
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Panghal A, Kumar V, Jena G. Melphalan induced germ cell toxicity and dose-dependent effects of β-aminoisobutyric acid in experimental rat model: Role of oxidative stress, inflammation and apoptosis. J Biochem Mol Toxicol 2023; 37:e23374. [PMID: 37086025 DOI: 10.1002/jbt.23374] [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: 08/22/2022] [Revised: 02/28/2023] [Accepted: 04/14/2023] [Indexed: 04/23/2023]
Abstract
The success of chemotherapy regimens has led to an increase in cancer survival rate over the last decades. Melphalan has been widely used for the treatment of several types of cancers despite its gonadotoxic effects. Due to its ability to cause mutations in the spermatogonial stem cells and spermatids, melphalan can exert a negative impact on male reproductive health in young cancer survivors. β-aminoisobutyric acid (BAIBA), a myokine released by skeletal muscles, has been reported to have beneficial effects in diabetic nephropathy, cardiomyopathy and hepatic toxicity. However, the exact role of BAIBA in chemotherapy-induced germ cell toxicity is still unexplored. The present study aims to determine the dose-dependent (25, 50, and 100 mg/kg) effects of BAIBA on melphalan-induced (1.5 mg/kg) germ cell toxicity in sprague-dawley (SD) rats. The evaluation parameters included quantification of oxidative stress biomarkers, sperm count, sperm motility and head morphology, sperm and testicular DNA damage, sperm mitochondrial membrane potential, ultrastructural changes in sperms, histological and protein expression studies in testes. Melphalan treatment significantly altered all the above-mentioned parameters and the high dose (100 mg/kg) of BAIBA restored melphalan-induced toxicity in a significant manner by exerting antioxidant, anti-inflammatory and antiapoptotic effects. However, the medium dose (50 mg/kg) of BAIBA decreased the toxicity of melphalan and the low dose (25 mg/kg) of BAIBA failed to counteract the melphalan-induced male germ cell toxicity as well as the peripheral blood micronucleus induction. The antioxidant, anti-inflammatory and antiapoptotic role of BAIBA in melphalan-induced gonadal damage is a novel finding in an experimental rat model.
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Affiliation(s)
- Archna Panghal
- Dept. of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Punjab, India
| | - Vinod Kumar
- Dept. of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Punjab, India
- Dept. of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Punjab, India
| | - Gopabandhu Jena
- Dept. of Pharmacology and Toxicology, Facility for Risk Assessment and Intervention Studies, National Institute of Pharmaceutical Education and Research, S.A.S Nagar, Punjab, India
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3
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Yi X, Yang Y, Li T, Li M, Yao T, Hu G, Wan G, Chang B. Signaling metabolite β-aminoisobutyric acid as a metabolic regulator, biomarker, and potential exercise pill. Front Endocrinol (Lausanne) 2023; 14:1192458. [PMID: 37313446 PMCID: PMC10258315 DOI: 10.3389/fendo.2023.1192458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/15/2023] [Indexed: 06/15/2023] Open
Abstract
Signaling metabolites can effectively regulate the biological functions of many tissues and organs. β-Aminoisobutyric acid (BAIBA), a product of valine and thymine catabolism in skeletal muscle, has been reported to participate in the regulation of lipid, glucose, and bone metabolism, as well as in inflammation and oxidative stress. BAIBA is produced during exercise and is involved in the exercise response. No side effect has been observed in human and rat studies, suggesting that BAIBA can be developed as a pill that confers the benefits of exercise to subjects who, for some reason, are unable to do so. Further, BAIBA has been confirmed to participate in the diagnosis and prevention of diseases as an important biological marker of disease. The current review aimed to discuss the roles of BAIBA in multiple physiological processes and the possible pathways of its action, and assess the progress toward the development of BAIBA as an exercise mimic and biomarker with relevance to multiple disease states, in order to provide new ideas and strategies for basic research and disease prevention in related fields.
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4
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Krieger JM, Hagele AM, Orr LS, Walden KE, Gross KN, Mumford PW, Kerksick CM. Dose-Response Absorption Kinetics of Oral L-Beta-Aminoisobutyric Acid (L-BAIBA) Supplementation in Healthy Men and Women. J Diet Suppl 2022; 20:832-849. [PMID: 36184601 DOI: 10.1080/19390211.2022.2128141] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
L-Beta-amino isobutyric acid (L-BAIBA) is a myokine produced in skeletal muscle during exercise and has been shown to impact carbohydrate and fat metabolism in both animals and humans. This study was designed to determine the rate and extent to which L-BAIBA appeared in human plasma after oral ingestion. In a randomized, double-blind, placebo-controlled, crossover fashion, six males and 6 females (N = 12; 24 ± 5 yrs; 173.6 ± 12.0 cm; 72.3 ± 11.3 kg; 21.0 ± 7.0 body fat %) completed a single-dose supplementation protocol of placebo (PLA), L-BAIBA at 250 mg (B250), 500 mg (B500), 1,500mg (B1500), and 1,500mg of valine (V1500). Participants fasted overnight (8-10 h) and consumed their dose with 8-12 fluid ounces of cold water. Venous blood samples were collected 0, 30, 60, 90, 120, 180, 240 and 300 min after ingestion and analyzed for L-BAIBA. Complete blood counts and comprehensive metabolic panels were analyzed 0 and 300 min after ingestion. Peak concentration (CMax) and area under the curve (AUC) were calculated for all variables. Baseline L-BAIBA levels were not different between conditions (p = 0.46). The observed AUC for B1500 (30,513 ± 9190 µM•300 min) was significantly higher than B500 (11,087 ± 3378 µM•300 min, p < 0.001), B250 (7081 ± 2535 µM•300 min, p < 0.001), V1500 (2837 ± 2107 µM•300 min, p < 0.001), and PLA (2836 ± 2061 µM•300 min, p < 0.001). Similarly, L-BAIBA CMax for B1500 (278.1 ± 52.1 µM) was significantly higher than all other supplement conditions: B500 (95.4 ± 33.5 µM, p < 0.001), B250 (63.3 ± 61.1 µM, p < 0.001), V1500 (10.1 ± 7.2 µM, p < 0.001), PLA (11.0 ± 7.1 µM, p = 0.001). AUC and CMax for B500 was significantly higher than B250 (p < 0.001), V1500 (p < 0.001), and PLA (p < 0.001). BAIBA AUC for B250 was significantly higher than V1500 (p < 0.001) and PLA (p < 0.001). No clinically significant changes in blood-based markers of health or adverse events were observed across the study protocol. L-BAIBA doses of 250 mg, 500 mg, and 1500 mg produced significantly greater concentrations of plasma L-BAIBA across a five-hour measurement window when compared to a 1500 mg dose of valine or a placebo. Follow-up efficacy studies on resting and exercise metabolism should be completed to assess the impact of L-BAIBA supplementation in normal weight and overweight individuals. Retrospectively registered on April 22, 2022 at ClinicalTrials.gov as NCT05328271.
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Affiliation(s)
- Joesi M Krieger
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Anthony M Hagele
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Logan S Orr
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Kylie E Walden
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Kristen N Gross
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Petey W Mumford
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
| | - Chad M Kerksick
- Exercise and Performance Nutrition Laboratory, College of Science, Technology, and Health, Lindenwood University, St. Charles, MO, USA
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Shanmugasundaram D, Fan Q, Wang M, Yi R, Wang O. Safety Assessment of L-β-Aminoisobutyric Acid (L-BAIBA): Subchronic Toxicity Study in Sprague Dawley Rats. Int J Toxicol 2022; 41:329-346. [PMID: 35549583 DOI: 10.1177/10915818221094487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
L-3-Aminoisobutyric acid (L-BAIBA) is an endogenous compound in human metabolism when thymine and valine undergo catabolism. L-BAIBA represents one of the two isomers of BAIBA in biological systems. BAIBA has been shown to reduce body fat percentage via an increase in fatty acid oxidation and a decrease in hepatic lipogenesis. However, no toxicological effects of L-BAIBA in animals or humans have been established. The present study was designed to evaluate the safety and toxic potentials of this compound, where L-BAIBA was administered orally to Sprague Dawley rats at 100, 300, and 900 mg/kg/day for 90 days. No treatment-related adverse effects were observed in any of the treatment groups. Based on the results, the No-Observed-Adverse-Effect Level (NOAEL) of L-BAIBA was 900 mg/kg/day.
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Affiliation(s)
| | - Qiru Fan
- Nanjing Nutrabuilding Bio-tech Co., Ltd, Nanjing, China
| | - Mingru Wang
- Nanjing Nutrabuilding Bio-tech Co., Ltd, Nanjing, China
| | - Ronghua Yi
- Nanjing Nutrabuilding Bio-tech Co., Ltd, Nanjing, China
| | - Ou Wang
- Nanjing Nutrabuilding Bio-tech Co., Ltd, Nanjing, China
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6
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Dietary GABA and its combination with vigabatrin mimic calorie restriction and induce antiobesity-like effects in lean mice. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104367] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Abstract
PURPOSE OF REVIEW The purpose of this review is to describe the current state of our thinking regarding bone-muscle interactions beyond the mechanical perspective. RECENT FINDINGS Recent and prior evidence has begun to dissect many of the molecular mechanisms that bone and muscle use to communicate with each other and to modify each other's function. Several signaling factors produced by muscle and bone have emerged as potential mediators of these biochemical/molecular interactions. These include muscle factors such as myostatin, Irisin, BAIBA, IL-6, and the IGF family and the bone factors FGF-23, Wnt1 and Wnt3a, PGE2, FGF9, RANKL, osteocalcin, and sclerostin. The identification of these signaling molecules and their underlying mechanisms offers the very real and exciting possibility that new pharmaceutical approaches can be developed that will permit the simultaneous treatments of diseases that often occur in combination, such as osteoporosis and sarcopenia.
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Affiliation(s)
- Nuria Lara-Castillo
- Department of Oral and Craniofacial Sciences, UMKC School of Dentistry, 650 East 25th Street, Kansas City, MO, 64108, USA
| | - Mark L Johnson
- Department of Oral and Craniofacial Sciences, UMKC School of Dentistry, 650 East 25th Street, Kansas City, MO, 64108, USA.
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Sawada M, Yamamoto H, Ogasahara A, Tanaka Y, Kihara S. β-aminoisobutyric acid protects against vascular inflammation through PGC-1β-induced antioxidative properties. Biochem Biophys Res Commun 2019; 516:963-968. [PMID: 31277947 DOI: 10.1016/j.bbrc.2019.06.141] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 06/25/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUD Among various myocyte-derived bioactive molecules (myokines), β-aminoisobutyric acid (BAIBA) is a unique myokine that attenuates skeletal muscle insulin resistance and inflammation, increases browning of white adipose tissue, and enhances hepatic fatty acid oxidation, resulting in upregulated energy expenditure of the whole body. In the present study, we investigated the effects of BAIBA on the vascular endothelial cell function. METHODS The mRNA levels of proinflammatory molecules, antioxidants, and their related transcription regulators were examined by quantitative RT-PCR in BAIBA-treated human aortic or umbilical vein endothelial cells (HAEC or HUVEC, respectively), with or without tumor necrosis factor (TNF)-α stimulation. The protein expression and phosphorylation of AMP-activated protein kinase (AMPK) and endothelial nitric oxide synthase (eNOS) were determined by Western blot analysis. RESULTS BAIBA pretreatment significantly suppressed the mRNA levels of the adhesion molecules in the TNF-α-stimulated HAEC and HUVEC. BAIBA treatment significantly increased the mRNA levels of antioxidant molecules, catalase, superoxide dismutases, thioredoxin, and gamma-glutamylcysteine ligases, together with mitochondrial biogenesis-related molecules, nuclear respiratory factor 1, and mitochondrial transcription factor A. In addition, BAIBA treatment significantly increased the transcription factors that regulated these genes [i.e., peroxisome proliferator-activated receptor (PPAR)-δ, PPAR-γ, estrogen-related receptor α (ERRα), and peroxisome proliferator-activated receptor gamma coactivator (PGC)-1β]. Adenovirus-mediated PGC-1β overexpression significantly increased the mRNA levels of all antioxidant molecules. The phosphorylation levels of AMPK and eNOS were unaltered by BAIBA. CONCLUSIONS In vascular endothelial cells, BAIBA had antiatherogenic effects through the PGC-1β-ERRα/PPAR-δ and PPAR-γ pathway. This can explain the beneficial effects of exercise on vascular endothelial function.
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Affiliation(s)
- Miho Sawada
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroyasu Yamamoto
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan.
| | - Ayako Ogasahara
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuya Tanaka
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shinji Kihara
- Department of Biomedical Informatics, Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
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Tanianskii DA, Jarzebska N, Birkenfeld AL, O'Sullivan JF, Rodionov RN. Beta-Aminoisobutyric Acid as a Novel Regulator of Carbohydrate and Lipid Metabolism. Nutrients 2019; 11:E524. [PMID: 30823446 PMCID: PMC6470580 DOI: 10.3390/nu11030524] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 01/04/2023] Open
Abstract
The prevalence and incidence of metabolic syndrome is reaching pandemic proportions worldwide, thus warranting an intensive search for novel preventive and treatment strategies. Recent studies have identified a number of soluble factors secreted by adipocytes and myocytes (adipo-/myokines), which link sedentary life style, abdominal obesity, and impairments in carbohydrate and lipid metabolism. In this review, we discuss the metabolic roles of the recently discovered myokine β-aminoisobutyric acid (BAIBA), which is produced by skeletal muscle during physical activity. In addition to physical activity, the circulating levels of BAIBA are controlled by the mitochondrial enzyme alanine: glyoxylate aminotransferase 2 (AGXT2), which is primarily expressed in the liver and kidneys. Recent studies have shown that BAIBA can protect from diet-induced obesity in animal models. It induces transition of white adipose tissue to a "beige" phenotype, which induces fatty acids oxidation and increases insulin sensitivity. While the exact mechanisms of BAIBA-induced metabolic effects are still not well understood, we discuss some of the proposed pathways. The reviewed data provide new insights into the connection between physical activity and energy metabolism and suggest that BAIBA might be a potential novel drug for treatment of the metabolic syndrome and its cardiovascular complications.
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Affiliation(s)
- Dmitrii A Tanianskii
- Department of Biochemistry, Institute of Experimental Medicine, Acad. Pavlov St., 12, 197376 St. Petersburg, Russia.
- Department of Fundamental Medicine and Medical Technology, St.Petersburg State University, 8 liter A, 21st Line V.O., 199034 St. Petersburg, Russia.
| | - Natalia Jarzebska
- University Center for Vascular Medicine, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
| | - Andreas L Birkenfeld
- Medical Clinic III, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
| | - John F O'Sullivan
- Medical Clinic III, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
- Charles Perkins Centre and Heart Research Institute, The University of Sydney, 7 Eliza St, Newtown NSW, Sydney 2042, Australia.
| | - Roman N Rodionov
- University Center for Vascular Medicine, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
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Steinhauser ML, Olenchock BA, O'Keefe J, Lun M, Pierce KA, Lee H, Pantano L, Klibanski A, Shulman GI, Clish CB, Fazeli PK. The circulating metabolome of human starvation. JCI Insight 2018; 3:121434. [PMID: 30135314 DOI: 10.1172/jci.insight.121434] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/10/2018] [Indexed: 12/17/2022] Open
Abstract
The human adaptive starvation response allows for survival during long-term caloric deprivation. Whether the physiology of starvation is adaptive or maladaptive is context dependent: activation of pathways by caloric restriction may promote longevity, yet in the context of caloric excess, the same pathways may contribute to obesity. Here, we performed plasma metabolite profiling of longitudinally collected samples during a 10-day, 0-calorie fast in humans. We identify classical milestones in adaptive starvation, including the early consumption of gluconeogenic amino acids and the subsequent surge in plasma nonesterified fatty acids that marks the shift from carbohydrate to lipid metabolism, and demonstrate findings, including (a) the preferential release of unsaturated fatty acids and an associated shift in plasma lipid species with high degrees of unsaturation and (b) evidence that acute, starvation-mediated hypoleptinemia may be a driver of the transition from glucose to lipid metabolism in humans.
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Affiliation(s)
- Matthew L Steinhauser
- Department of Medicine, Division of Genetics, and.,Department of Medicine, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Benjamin A Olenchock
- Department of Medicine, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA.,Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - John O'Keefe
- Department of Medicine, Division of Genetics, and
| | - Mingyue Lun
- Department of Medicine, Division of Genetics, and
| | - Kerry A Pierce
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Hang Lee
- Harvard Medical School, Boston, Massachusetts, USA.,MGH Biostatistics Center, Boston, Massachusetts, USA
| | - Lorena Pantano
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Anne Klibanski
- Harvard Medical School, Boston, Massachusetts, USA.,Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Gerald I Shulman
- Departments of Internal Medicine and Cellular and Molecular Physiology and Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Clary B Clish
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - Pouneh K Fazeli
- Harvard Medical School, Boston, Massachusetts, USA.,Neuroendocrine Unit, Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
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11
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The role of exercise-induced myokines in regulating metabolism. Arch Pharm Res 2017; 41:14-29. [DOI: 10.1007/s12272-017-0994-y] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 11/21/2017] [Indexed: 12/25/2022]
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12
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Rodríguez A, Becerril S, Ezquerro S, Méndez-Giménez L, Frühbeck G. Crosstalk between adipokines and myokines in fat browning. Acta Physiol (Oxf) 2017; 219:362-381. [PMID: 27040995 DOI: 10.1111/apha.12686] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/21/2016] [Accepted: 04/01/2016] [Indexed: 12/20/2022]
Abstract
Skeletal muscle is the largest organ determining whole-body insulin sensitivity and metabolic homoeostasis. Adaptive changes of skeletal muscle in response to physical activity include adjustments in the production and secretion of muscle-derived bioactive factors, known as myokines, such as myostatin, IL-4, IL-6, IL-7 and IL-15, myonectin, follistatin-like 1 or leukaemia inhibitory factor. These myokines not only act locally in the muscle in an autocrine/paracrine manner, but also are released to the bloodstream as endocrine factors to regulate physiological processes in other tissues. Irisin, derived from the cleavage of FNDC5 protein, constitutes a myokine that induces myogenesis and fat browning (switch of white adipocytes to brown fat-like cells) together with a concomitant increase in energy expenditure. Besides being a target for irisin actions, the adipose tissue also constitutes a production site of FNDC5. Interestingly, irisin secretion from subcutaneous and visceral fat depots is decreased by long-term exercise training and fasting, suggesting a discordant regulation of FNDC5/irisin in skeletal muscle and adipose tissue. Accordingly, our group has recently reported that the adipokine leptin differentially regulates FNDC5/irisin expression in skeletal muscle and fat, confirming the crosstalk between both tissues. Moreover, irisin secretion and function are regulated by other myokines, such as follistatin or myostatin, as well as by other adipokines, including fibroblast growth factor 21 and leptin. Taken together, myokines have emerged as novel molecular mediators of fat browning and their activity can be modulated by adipokines, confirming the crosstalk between skeletal muscle and adipose tissue to regulate thermogenesis and energy expenditure.
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Affiliation(s)
- A. Rodríguez
- Metabolic Research Laboratory; Clínica Universidad de Navarra; Pamplona Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Instituto de Salud Carlos III; Madrid Spain
- Obesity & Adipobiology Group; Instituto de Investigación Sanitaria de Navarra (IdiSNA); Pamplona Spain
| | - S. Becerril
- Metabolic Research Laboratory; Clínica Universidad de Navarra; Pamplona Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Instituto de Salud Carlos III; Madrid Spain
- Obesity & Adipobiology Group; Instituto de Investigación Sanitaria de Navarra (IdiSNA); Pamplona Spain
| | - S. Ezquerro
- Metabolic Research Laboratory; Clínica Universidad de Navarra; Pamplona Spain
| | - L. Méndez-Giménez
- Metabolic Research Laboratory; Clínica Universidad de Navarra; Pamplona Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Instituto de Salud Carlos III; Madrid Spain
- Obesity & Adipobiology Group; Instituto de Investigación Sanitaria de Navarra (IdiSNA); Pamplona Spain
| | - G. Frühbeck
- Metabolic Research Laboratory; Clínica Universidad de Navarra; Pamplona Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN); Instituto de Salud Carlos III; Madrid Spain
- Obesity & Adipobiology Group; Instituto de Investigación Sanitaria de Navarra (IdiSNA); Pamplona Spain
- Department of Endocrinology & Nutrition; Clínica Universidad de Navarra; Pamplona Spain
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Vemula H, Kitase Y, Ayon NJ, Bonewald L, Gutheil WG. Gaussian and linear deconvolution of LC-MS/MS chromatograms of the eight aminobutyric acid isomers. Anal Biochem 2016; 516:75-85. [PMID: 27771391 DOI: 10.1016/j.ab.2016.10.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 10/18/2016] [Indexed: 10/20/2022]
Abstract
Isomeric molecules present a challenge for analytical resolution and quantification, even with MS-based detection. The eight aminobutyric acid (ABA) isomers are of interest for their various biological activities, particularly γ-aminobutyric acid (GABA) and the d- and l-isomers of β-aminoisobutyric acid (β-AIBA; BAIBA). This study aimed to investigate LC-MS/MS-based resolution of these ABA isomers as their Marfey's (Mar) reagent derivatives. HPLC was able to separate three Mar-ABA isomers l-β-ABA (l-BABA), and l- and d-α-ABA (AABA) completely, with three isomers (GABA, and d/l-BAIBA) in one chromatographic cluster, and two isomers (α-AIBA (AAIBA) and d-BABA) in a second cluster. Partially separated cluster components were deconvoluted using Gaussian peak fitting except for GABA and d-BAIBA. MS/MS detection of Marfey's derivatized ABA isomers provided six MS/MS fragments, with substantially different intensity profiles between structural isomers. This allowed linear deconvolution of ABA isomer peaks. Combining HPLC separation with linear and Gaussian deconvolution allowed resolution of all eight ABA isomers. Application to human serum found a substantial level of l-AABA (13 μM), an intermediate level of l-BAIBA (0.8 μM), and low but detectable levels (<0.2 μM) of GABA, l-BABA, AAIBA, d-BAIBA, and d-AABA. This approach should be useful for LC-MS/MS deconvolution of other challenging groups of isomeric molecules.
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Affiliation(s)
- Harika Vemula
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
| | - Yukiko Kitase
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
| | - Navid J Ayon
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
| | - Lynda Bonewald
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA
| | - William G Gutheil
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, Kansas City, MO 64108, USA.
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Raghu R, Jesudas B, Bhavani G, Ezhilarasan D, Karthikeyan S. Silibinin mitigates zidovudine-induced hepatocellular degenerative changes, oxidative stress and hyperlipidaemia in rats. Hum Exp Toxicol 2015; 34:1031-42. [DOI: 10.1177/0960327114567765] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Prolonged zidovudine (AZT) treatment in HIV-infected and AIDS patients is shown to induce liver toxicity leading to complications. Therapeutic regimen that could encounter this adverse effect is unavailable and management of toxicity is often symptomatic or is limited to withdrawal of therapy. In the present investigation, we evaluated the alleviating properties of silibinin (SBN), a flavanolignan obtained from Silybum marianum against subacute AZT-induced hepatotoxicity and oxidative stress in rats. AZT treatment (50 mg/kg body weight (b.w.) periorally (p.o.), daily for 45 days) caused highly significant increases in alanine transaminase, alkaline phosphatase, argininosuccinic acid lyase and bilirubin in serum. Oxidative stress is shown by a highly significant increase in lipid peroxidase and total carbonyl content and decrease in catalase and protein thiols in the liver tissue. Hyperlipidaemia is indicated by highly significant increase in total lipids and free fatty acid in serum. Evaluation of liver by haematoxylin and eosin staining shows parenchymal cell enlargement, inflammatory changes and increase in sinusoidal spaces. Simultaneous treatment of SBN (100 mg/kg b.w. p.o., daily for 45 days) significantly protected the liver against hepatotoxicity, oxidative stress and hyperlipidaemia induced by AZT, and this alleviating property is attributed to hepatoprotective, membrane-stabilizing, antioxidant and free radical scavenging properties of SBN.
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Affiliation(s)
- R Raghu
- Food and Hepatotoxicology Laboratory, Department of Pharmacology and Environmental Toxicology, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, Tamil Nadu, India
| | - B Jesudas
- Food and Hepatotoxicology Laboratory, Department of Pharmacology and Environmental Toxicology, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, Tamil Nadu, India
| | - G Bhavani
- Food and Hepatotoxicology Laboratory, Department of Pharmacology and Environmental Toxicology, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, Tamil Nadu, India
| | - D Ezhilarasan
- Food and Hepatotoxicology Laboratory, Department of Pharmacology and Environmental Toxicology, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, Tamil Nadu, India
| | - S Karthikeyan
- Food and Hepatotoxicology Laboratory, Department of Pharmacology and Environmental Toxicology, Dr. A.L.M. Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, Tamil Nadu, India
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15
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Igoudjil A, Abbey-Toby A, Begriche K, Grodet A, Chataigner K, Peytavin G, Maachi M, Colin M, Robin MA, Lettéron P, Feldmann G, Pessayre D, Fromenty B. High Doses of Stavudine Induce Fat Wasting and Mild Liver Damage without Impairing Mitochondrial Respiration in Mice. Antivir Ther 2007. [DOI: 10.1177/135965350701200314] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective Stavudine (d4T), a nucleoside reverse-transcriptase inhibitor (NRTI), can induce lipoatrophy, fatty liver, hyperlactataemia and abnormal liver tests. NRTI toxicity is usually ascribed to mitochondrial DNA (mtDNA) depletion and impaired mitochondrial respiration. However, NRTIs could have effects unrelated to mtDNA. Recently, we reported that 100 mg/kg/day of d4T stimulated fatty acid oxidation (FAO) in mouse liver, and reduced body fatness without depleting white adipose tissue (WAT) mtDNA. We hypothesized that higher d4T doses could further reduce adiposity, while inhibiting hepatic FAO. Methods Mice were treated for 2 weeks with d4T (500 mg/kg/day), L-carnitine (200 mg/kg/day) or both drugs concomitantly. Body fatness was assessed by dual energy X-ray absorptiometry, and investigations were performed in plasma, liver, muscle and WAT. Results D4T reduced the gain of body adiposity, WAT leptin, whole body FAO and plasma ketone bodies, and increased liver triglycerides and plasma aminotransferases with mild ultrastructural abnormalities in hepatocytes. Plasma lactate and respiratory chain activities in tissues were unchanged. Stearoyl-CoA desaturase (SCD-1), an enzyme negatively regulated by leptin, was overexpressed in liver. High doses of β-aminoisobutyric acid (BAIBA), a d4T catabolite, increased plasma ketone bodies. Although L-carnitine did not correct body adiposity, it prevented d4T-induced impairment of FAO and liver abnormalities. Conclusions D4T overdosage triggers fat wasting, leptin insufficiency and mild liver damage, without causing respiratory chain dysfunction. Overexpression of SCD-1 reduces fatty acid oxidation and overcomes the stimulating effect of BAIBA on hepatic FAO. L-carnitine does not correct leptin insufficiency but prevents d4T-induced impairment of FAO and liver damage.
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Affiliation(s)
- Anissa Igoudjil
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Adjé Abbey-Toby
- Service Central d'Anatomie et de Cytologie Pathologiques, Hôpital Beaujon, Clichy, France
| | - Karima Begriche
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Alain Grodet
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Karine Chataigner
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | | | - Mustapha Maachi
- INSERM, U680, Faculté de Médecine Saint-Antoine et Service de Biochimie et Hormonologie, AH-HP, Hôpital Tenon, Paris, France
| | - Marion Colin
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Marie-Anne Robin
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Philippe Lettéron
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Gérard Feldmann
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Dominique Pessayre
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
| | - Bernard Fromenty
- INSERM, U773, Centre de Recherche Biomédicale Bichat Beaujon CRB3, Paris, France
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Côté HCF. Possible Ways Nucleoside Analogues Can Affect Mitochondrial Dna Content and Gene Expression during HIV Therapy. Antivir Ther 2005. [DOI: 10.1177/135965350501002s02] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In recent years, research into nucleoside reverse transcriptase inhibitor (NRTI)-related mitochondrial (mt) toxicity in HIV therapy has led to conflicting results and many unanswered questions regarding the molecular mechanisms that lead to such toxicity. From the early hypothesis that inhibition of the human mt polymerase γ by NRTIs was responsible for the drugs’ mt toxicity, an increasingly complex picture is emerging that probably involves multiple mt pathways. Results have been presented suggesting that NRTIs affect not only mtDNA but also mtRNA, nucleotide phosphorylation and the mt respiratory chain. Based on the current level of knowledge, this overview addresses some of the potential mechanisms through which NRTIs could affect mitochondria and ultimately cause the toxicity symptoms observed in HIV patients receiving NRTI-containing antiretroviral therapy.
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Affiliation(s)
- Hélène CF Côté
- British Columbia Centre for Excellence in HIV/AIDS, Department of Pathology & Laboratory Medicine/University of British Columbia, Vancouver, BC, Canada
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