1
|
Yu Y, Tong D, Yu Y, Tian D, Zhou W, Zhang X, Shi W, Liu G. Toxic effects of four emerging pollutants on cardiac performance and associated physiological parameters of the thick-shell mussel (Mytilus coruscus). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122244. [PMID: 37482340 DOI: 10.1016/j.envpol.2023.122244] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/01/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
Robust cardiac performance is critical for the health and even survival of an animal; however, it is sensitive to environmental stressors. At present, little is known about the cardiotoxicity of emerging pollutants to bivalve mollusks. Thus, in this study, the cardiotoxic effects of four emergent pollutants, carbamazepine (CBZ), bisphenol A (BPA), tetrabromobisphenol A (TBBPA), and tris(2-chloroethyl) phosphate (TCEP), on the thick-shell mussel, Mytilus coruscus, were evaluated by heartbeat monitoring and histological examinations. In addition, the impacts of these pollutants on parameters that closely related to cardiac function including neurotransmitters, calcium homeostasis, energy supply, and oxidative status were assessed. Our results demonstrated that 28-day exposure of the thick-shell mussel to these pollutants resulted in evident heart tissue lesions (indicated by hemocyte infiltration and myocardial fibrosis) and disruptions of cardiac performance (characterized by bradyrhythmia and arrhythmia). In addition to obstructing neurotransmitters and calcium homeostasis, exposure to pollutants also led to constrained energy supply and induced oxidative stress in mussel hearts. These findings indicate that although do differ somehow in their effects, these four pollutants may exert cardiotoxic impacts on mussels, which could pose severe threats to this important species and therefore deserves more attention.
Collapse
Affiliation(s)
- Yingying Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Difei Tong
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Yihan Yu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Dandan Tian
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Xunyi Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
| |
Collapse
|
2
|
Persad KL, Lopaschuk GD. Energy Metabolism on Mitochondrial Maturation and Its Effects on Cardiomyocyte Cell Fate. Front Cell Dev Biol 2022; 10:886393. [PMID: 35865630 PMCID: PMC9294643 DOI: 10.3389/fcell.2022.886393] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 05/20/2022] [Indexed: 12/12/2022] Open
Abstract
Alterations in energy metabolism play a major role in the lineage of cardiomyocytes, such as the dramatic changes that occur in the transition from neonate to newborn. As cardiomyocytes mature, they shift from a primarily glycolytic state to a mitochondrial oxidative metabolic state. Metabolic intermediates and metabolites may have epigenetic and transcriptional roles in controlling cell fate by increasing mitochondrial biogenesis. In the maturing cardiomyocyte, such as in the postnatal heart, fatty acid oxidation increases in conjunction with increased mitochondrial biogenesis driven by the transcriptional coregulator PGC1-α. PGC1-α is necessary for mitochondrial biogenesis in the heart at birth, with deficiencies leading to postnatal cardiomyopathy. While stem cell therapy as a treatment for heart failure requires further investigation, studies suggest that adult stem cells may secrete cardioprotective factors which may regulate cardiomyocyte differentiation and survival. This review will discuss how metabolism influences mitochondrial biogenesis and how mitochondrial biogenesis influences cell fate, particularly in the context of the developing cardiomyocyte. The implications of energy metabolism on stem cell differentiation into cardiomyocytes and how this may be utilized as a therapy against heart failure and cardiovascular disease will also be discussed.
Collapse
|
3
|
Wang L, Cai Y, Jian L, Cheung CW, Zhang L, Xia Z. Impact of peroxisome proliferator-activated receptor-α on diabetic cardiomyopathy. Cardiovasc Diabetol 2021; 20:2. [PMID: 33397369 PMCID: PMC7783984 DOI: 10.1186/s12933-020-01188-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 12/02/2020] [Indexed: 12/21/2022] Open
Abstract
The prevalence of cardiomyopathy is higher in diabetic patients than those without diabetes. Diabetic cardiomyopathy (DCM) is defined as a clinical condition of abnormal myocardial structure and performance in diabetic patients without other cardiac risk factors, such as coronary artery disease, hypertension, and significant valvular disease. Multiple molecular events contribute to the development of DCM, which include the alterations in energy metabolism (fatty acid, glucose, ketone and branched chain amino acids) and the abnormalities of subcellular components in the heart, such as impaired insulin signaling, increased oxidative stress, calcium mishandling and inflammation. There are no specific drugs in treating DCM despite of decades of basic and clinical investigations. This is, in part, due to the lack of our understanding as to how heart failure initiates and develops, especially in diabetic patients without an underlying ischemic cause. Some of the traditional anti-diabetic or lipid-lowering agents aimed at shifting the balance of cardiac metabolism from utilizing fat to glucose have been shown inadequately targeting multiple aspects of the conditions. Peroxisome proliferator-activated receptor α (PPARα), a transcription factor, plays an important role in mediating DCM-related molecular events. Pharmacological targeting of PPARα activation has been demonstrated to be one of the important strategies for patients with diabetes, metabolic syndrome, and atherosclerotic cardiovascular diseases. The aim of this review is to provide a contemporary view of PPARα in association with the underlying pathophysiological changes in DCM. We discuss the PPARα-related drugs in clinical applications and facts related to the drugs that may be considered as risky (such as fenofibrate, bezafibrate, clofibrate) or safe (pemafibrate, metformin and glucagon-like peptide 1-receptor agonists) or having the potential (sodium-glucose co-transporter 2 inhibitor) in treating DCM.
Collapse
Affiliation(s)
- Lin Wang
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China
| | - Yin Cai
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, SAR, China
| | - Liguo Jian
- Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chi Wai Cheung
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China
| | - Liangqing Zhang
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
| | - Zhengyuan Xia
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, SAR, China.
| |
Collapse
|
4
|
Brown SM, Larsen NK, Thankam FG, Agrawal DK. Fetal cardiomyocyte phenotype, ketone body metabolism, and mitochondrial dysfunction in the pathology of atrial fibrillation. Mol Cell Biochem 2020; 476:1165-1178. [PMID: 33188453 DOI: 10.1007/s11010-020-03980-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/06/2020] [Indexed: 10/23/2022]
Abstract
Atrial fibrillation (AF) is the most common cardiac arrhythmia diagnosed in clinical practice. Even though hypertension, congestive heart failure, pulmonary disease, and coronary artery disease are the potential risk factors for AF, the underlying molecular pathology is largely unknown. The reversion of the mature cardiomyocytes to fetal phenotype, impaired ketone body metabolism, mitochondrial dysfunction, and the cellular effect of reactive oxygen species (ROS) are the major underlying biochemical events associated with the molecular pathology of AF. On this background, the present manuscript sheds light into these biochemical events in regard to the metabolic derangements in cardiomyocyte leading to AF, especially with respect to structural, contractile, and electrophysiological properties. In addition, the article critically reviews the current understanding, potential demerits, and translational strategies in the management of AF.
Collapse
Affiliation(s)
- Sean M Brown
- Creighton University School of Medicine, Omaha, NE, 68178, USA
| | | | - Finosh G Thankam
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766, USA
| | - Devendra K Agrawal
- Department of Translational Research, Western University of Health Sciences, 309 E. Second Street, Pomona, CA, 91766, USA.
| |
Collapse
|
5
|
van der Pol A, Hoes MF, de Boer RA, van der Meer P. Cardiac foetal reprogramming: a tool to exploit novel treatment targets for the failing heart. J Intern Med 2020; 288:491-506. [PMID: 32557939 PMCID: PMC7687159 DOI: 10.1111/joim.13094] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/26/2020] [Accepted: 04/14/2020] [Indexed: 12/11/2022]
Abstract
As the heart matures during embryogenesis from its foetal stages, several structural and functional modifications take place to form the adult heart. This process of maturation is in large part due to an increased volume and work load of the heart to maintain proper circulation throughout the growing body. In recent years, it has been observed that these changes are reversed to some extent as a result of cardiac disease. The process by which this occurs has been characterized as cardiac foetal reprogramming and is defined as the suppression of adult and re-activation of a foetal genes profile in the diseased myocardium. The reasons as to why this process occurs in the diseased myocardium are unknown; however, it has been suggested to be an adaptive process to counteract deleterious events taking place during cardiac remodelling. Although still in its infancy, several studies have demonstrated that targeting foetal reprogramming in heart failure can lead to substantial improvement in cardiac functionality. This is highlighted by a recent study which found that by modulating the expression of 5-oxoprolinase (OPLAH, a novel cardiac foetal gene), cardiac function can be significantly improved in mice exposed to cardiac injury. Additionally, the utilization of angiotensin receptor neprilysin inhibitors (ARNI) has demonstrated clear benefits, providing important clinical proof that drugs that increase natriuretic peptide levels (part of the foetal gene programme) indeed improve heart failure outcomes. In this review, we will highlight the most important aspects of cardiac foetal reprogramming and will discuss whether this process is a cause or consequence of heart failure. Based on this, we will also explain how a deeper understanding of this process may result in the development of novel therapeutic strategies in heart failure.
Collapse
Affiliation(s)
- A van der Pol
- From the, Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Perioperative Inflammation and Infection Group, Department of Medicine, Faculty of Medicine and Health Sciences, University of Oldenburg, Oldenburg, Germany
| | - M F Hoes
- From the, Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - R A de Boer
- From the, Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - P van der Meer
- From the, Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| |
Collapse
|
6
|
Chen Y, Gall MG, Zhang H, Keane FM, McCaughan GW, Yu DMT, Gorrell MD. Dipeptidyl peptidase 9 enzymatic activity influences the expression of neonatal metabolic genes. Exp Cell Res 2016; 342:72-82. [PMID: 26930324 DOI: 10.1016/j.yexcr.2016.02.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 02/25/2016] [Accepted: 02/26/2016] [Indexed: 02/07/2023]
Abstract
The success of dipeptidyl peptidase 4 (DPP4) inhibition as a type 2 diabetes therapy has encouraged deeper examination of the post-proline DPP enzymes. DPP9 has been implicated in immunoregulation, disease pathogenesis and metabolism. The DPP9 enzyme-inactive (Dpp9 gene knock-in; Dpp9 gki) mouse displays neonatal lethality, suggesting that DPP9 enzyme activity is essential in neonatal development. Here we present gene expression patterns in these Dpp9 gki neonatal mice. Taqman PCR arrays and sequential qPCR assays on neonatal liver and gut revealed differential expression of genes involved in cell growth, innate immunity and metabolic pathways including long-chain-fatty-acid uptake and esterification, long-chain fatty acyl-CoA binding, trafficking and transport into mitochondria, lipoprotein metabolism, adipokine transport and gluconeogenesis in the Dpp9 gki mice compared to wild type. In a liver cell line, Dpp9 knockdown increased AMP-activated protein kinase phosphorylation, which suggests a potential mechanism. DPP9 protein levels in liver cells were altered by treatment with EGF, HGF, insulin or palmitate, suggesting potential natural DPP9 regulators. These gene expression analyses of a mouse strain deficient in DPP9 enzyme activity show, for the first time, that DPP9 enzyme activity regulates metabolic pathways in neonatal liver and gut.
Collapse
Affiliation(s)
- Yiqian Chen
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Margaret G Gall
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Hui Zhang
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Fiona M Keane
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Geoffrey W McCaughan
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Denise M T Yu
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Mark D Gorrell
- Centenary Institute and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.
| |
Collapse
|
7
|
Hirata-Koizumi M, Ise R, Kato H, Matsuyama T, Nishimaki-Mogami T, Takahashi M, Ono A, Ema M, Hirose A. Transcriptome analyses demonstrate that Peroxisome Proliferator-Activated Receptor α (PPARα) activity of an ultraviolet absorber, 2-(2’-hydroxy-3’,5’-di-tert-butylphenyl)benzotriazole, as possible mechanism of their toxicity and the gender differences. J Toxicol Sci 2016; 41:693-700. [DOI: 10.2131/jts.41.693] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Mutsuko Hirata-Koizumi
- Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences
| | - Ryota Ise
- Shin Nippon Biomedical Laboratories, Ltd. (SNBL)
| | - Hirohito Kato
- Drug Safety Research Laboratories, Shin Nippon Biomedical Laboratories, Ltd. (SNBL)
| | | | | | - Mika Takahashi
- Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences
| | - Atsushi Ono
- Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences
| | - Makoto Ema
- Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Akihiko Hirose
- Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences
| |
Collapse
|
8
|
Lam VH, Zhang L, Huqi A, Fukushima A, Tanner BA, Onay-Besikci A, Keung W, Kantor PF, Jaswal JS, Rebeyka IM, Lopaschuk GD. Activating PPARα prevents post-ischemic contractile dysfunction in hypertrophied neonatal hearts. Circ Res 2015; 117:41-51. [PMID: 25977309 DOI: 10.1161/circresaha.117.306585] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 05/14/2015] [Indexed: 11/16/2022]
Abstract
RATIONALE Post-ischemic contractile dysfunction is a contributor to morbidity and mortality after the surgical correction of congenital heart defects in neonatal patients. Pre-existing hypertrophy in the newborn heart can exacerbate these ischemic injuries, which may partly be due to a decreased energy supply to the heart resulting from low fatty acid β-oxidation rates. OBJECTIVE We determined whether stimulating fatty acid β-oxidation with GW7647, a peroxisome proliferator-activated receptor-α (PPARα) activator, would improve cardiac energy production and post-ischemic functional recovery in neonatal rabbit hearts subjected to volume overload-induced cardiac hypertrophy. METHODS AND RESULTS Volume-overload cardiac hypertrophy was produced in 7-day-old rabbits via an aorto-caval shunt, after which, the rabbits were treated with or without GW7647 (3 mg/kg per day) for 14 days. Biventricular working hearts were subjected to 35 minutes of aerobic perfusion, 25 minutes of global no-flow ischemia, and 30 minutes of aerobic reperfusion. GW7647 treatment did not prevent the development of cardiac hypertrophy, but did prevent the decline in left ventricular ejection fraction in vivo. GW7647 treatment increased cardiac fatty acid β-oxidation rates before and after ischemia, which resulted in a significant increase in overall ATP production and an improved in vitro post-ischemic functional recovery. A decrease in post-ischemic proton production and endoplasmic reticulum stress, as well as an activation of sarcoplasmic reticulum calcium ATPase isoform 2 and citrate synthase, was evident in GW7647-treated hearts. CONCLUSIONS Stimulating fatty acid β-oxidation in neonatal hearts may present a novel cardioprotective intervention to limit post-ischemic contractile dysfunction.
Collapse
Affiliation(s)
- Victoria H Lam
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Liyan Zhang
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Alda Huqi
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Arata Fukushima
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Brandon A Tanner
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Arzu Onay-Besikci
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Wendy Keung
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Paul F Kantor
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Jagdip S Jaswal
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Ivan M Rebeyka
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.)
| | - Gary D Lopaschuk
- From the Cardiovascular Translational Science Institute (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.) and Department of Pediatrics (V.H.L., L.Z., A.H., A.F., B.A.T., W.K., P.F.K., J.S.J., I.M.R., G.D.L.), University of Alberta, Edmonton, Canada; and Department of Medical Pharmacology, Ankara University, Ankara, Turkey (A.O.-B.).
| |
Collapse
|
9
|
Peroxisome proliferator-activated receptor alpha1 in yellow catfish Pelteobagrus fulvidraco: Molecular characterization, mRNA tissue expression and transcriptional regulation by insulin in vivo and in vitro. Comp Biochem Physiol B Biochem Mol Biol 2015; 183:58-66. [DOI: 10.1016/j.cbpb.2015.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/22/2015] [Accepted: 01/23/2015] [Indexed: 11/18/2022]
|
10
|
Renaud HJ, Cui YJ, Lu H, Zhong XB, Klaassen CD. Ontogeny of hepatic energy metabolism genes in mice as revealed by RNA-sequencing. PLoS One 2014; 9:e104560. [PMID: 25102070 PMCID: PMC4125194 DOI: 10.1371/journal.pone.0104560] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 07/14/2014] [Indexed: 12/18/2022] Open
Abstract
The liver plays a central role in metabolic homeostasis by coordinating synthesis, storage, breakdown, and redistribution of nutrients. Hepatic energy metabolism is dynamically regulated throughout different life stages due to different demands for energy during growth and development. However, changes in gene expression patterns throughout ontogeny for factors important in hepatic energy metabolism are not well understood. We performed detailed transcript analysis of energy metabolism genes during various stages of liver development in mice. Livers from male C57BL/6J mice were collected at twelve ages, including perinatal and postnatal time points (n = 3/age). The mRNA was quantified by RNA-Sequencing, with transcript abundance estimated by Cufflinks. One thousand sixty energy metabolism genes were examined; 794 were above detection, of which 627 were significantly changed during at least one developmental age compared to adult liver. Two-way hierarchical clustering revealed three major clusters dependent on age: GD17.5–Day 5 (perinatal-enriched), Day 10–Day 20 (pre-weaning-enriched), and Day 25–Day 60 (adolescence/adulthood-enriched). Clustering analysis of cumulative mRNA expression values for individual pathways of energy metabolism revealed three patterns of enrichment: glycolysis, ketogenesis, and glycogenesis were all perinatally-enriched; glycogenolysis was the only pathway enriched during pre-weaning ages; whereas lipid droplet metabolism, cholesterol and bile acid metabolism, gluconeogenesis, and lipid metabolism were all enriched in adolescence/adulthood. This study reveals novel findings such as the divergent expression of the fatty acid β-oxidation enzymes Acyl-CoA oxidase 1 and Carnitine palmitoyltransferase 1a, indicating a switch from mitochondrial to peroxisomal β-oxidation after weaning; as well as the dynamic ontogeny of genes implicated in obesity such as Stearoyl-CoA desaturase 1 and Elongation of very long chain fatty acids-like 3. These data shed new light on the ontogeny of homeostatic regulation of hepatic energy metabolism, which could ultimately provide new therapeutic targets for metabolic diseases.
Collapse
Affiliation(s)
- Helen J. Renaud
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Yue Julia Cui
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Hong Lu
- Department of Pharmacology, SUNY Upstate Medical University, Syracuse, New York, United States of America
| | - Xiao-bo Zhong
- Department of Pharmaceutical Sciences, University of Connecticut School of Pharmacy, Storrs, Connecticut, United States of America
| | - Curtis D. Klaassen
- College of Medicine, University of Kansas, Kansas City, Kansas, United States of America
- * E-mail:
| |
Collapse
|
11
|
Murray TV, Ahmad A, Brewer AC. Reactive oxygen at the heart of metabolism. Trends Cardiovasc Med 2014; 24:113-20. [DOI: 10.1016/j.tcm.2013.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/11/2013] [Accepted: 09/12/2013] [Indexed: 02/04/2023]
|
12
|
Abbott BD, Wood CR, Watkins AM, Tatum-Gibbs K, Das KP, Lau C. Effects of perfluorooctanoic acid (PFOA) on expression of peroxisome proliferator-activated receptors (PPAR) and nuclear receptor-regulated genes in fetal and postnatal CD-1 mouse tissues. Reprod Toxicol 2012; 33:491-505. [DOI: 10.1016/j.reprotox.2011.11.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/27/2011] [Accepted: 11/16/2011] [Indexed: 12/31/2022]
|
13
|
Energy Metabolic Phenotype of the Cardiomyocyte During Development, Differentiation, and Postnatal Maturation. J Cardiovasc Pharmacol 2010; 56:130-40. [DOI: 10.1097/fjc.0b013e3181e74a14] [Citation(s) in RCA: 410] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
14
|
Hirata-Koizumi M, Matsuyama T, Imai T, Hirose A, Kamata E, Ema M. Disappearance of gender-related difference in the toxicity of benzotriazole ultraviolet absorber in juvenile rats. Congenit Anom (Kyoto) 2009; 49:247-52. [PMID: 20021483 DOI: 10.1111/j.1741-4520.2009.00248.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole (HDBB) is an ultraviolet absorber used in plastic resin products, such as building materials and automobile components. In oral repeated dose toxicity studies using 5- or 6-week-old rats, this chemical induced hepatic histopathological changes, such as hypertrophy accompanied with eosinophilic granular changes and focal necrosis of hepatocytes, and male rats showed nearly 25 times higher susceptibility to the toxic effects than females. Castration at approximately 4 weeks of age markedly reduced the sex-related variation in HDBB toxicity, but some difference, less than five times, remained between male and female castrated rats. Following oral HDBB administration to male and female juvenile rats from postnatal days 4-21, such gender-related difference in toxic susceptibility was not detected; therefore, it is speculated that the determinants of susceptibility to HDBB toxicity are differentiated between sexes after weaning. In young rats given HDBB, there was no gender-related difference in plasma HDBB concentration, and no metabolites were detected in the plasma of either sex. HDBB induced lauric acid 12-hydroxylase activity in the liver and this change was more pronounced in males than in females. These findings indicate that HDBB could show hepatic peroxisome proliferation activity, and the difference in the susceptibility of male and female rats to this effect might lead to marked gender-related differences in toxicity.
Collapse
Affiliation(s)
- Mutsuko Hirata-Koizumi
- Division of Risk Assessment, Biological Safety Research Center, National Institute of Health Sciences, Tokyo, Japan.
| | | | | | | | | | | |
Collapse
|
15
|
Hirata-Koizumi M, Matsuno K, Kawabata M, Yajima K, Matsuyama T, Hirose A, Kamata E, Ema M. Gender-related difference in the toxicity of 2-(2′-hydroxy-3′,5′-di-tert-butylphenyl)benzotriazole in rats: Relationship to the plasma concentration,in vitrohepatic metabolism, and effects on hepatic metabolizing enzyme activity. Drug Chem Toxicol 2009; 32:204-14. [DOI: 10.1080/01480540902862244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Abbott BD, Wolf CJ, Das KP, Zehr RD, Schmid JE, Lindstrom AB, Strynar MJ, Lau C. Developmental toxicity of perfluorooctane sulfonate (PFOS) is not dependent on expression of peroxisome proliferator activated receptor-alpha (PPARα) in the mouse. Reprod Toxicol 2009; 27:258-265. [DOI: 10.1016/j.reprotox.2008.05.061] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Revised: 05/12/2008] [Accepted: 05/16/2008] [Indexed: 10/22/2022]
|
17
|
Isabel Panadero M, González MDC, Herrera E, Bocos C. Modulación del PPARα por agentes farmacológicos y naturales y sus implicaciones metabólicas. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2008. [DOI: 10.1016/s0214-9168(08)75789-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
18
|
Abbott BD. Review of the expression of peroxisome proliferator-activated receptors alpha (PPAR alpha), beta (PPAR beta), and gamma (PPAR gamma) in rodent and human development. Reprod Toxicol 2008; 27:246-257. [PMID: 18996469 DOI: 10.1016/j.reprotox.2008.10.001] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 09/17/2008] [Accepted: 10/01/2008] [Indexed: 12/20/2022]
Abstract
The peroxisome proliferator-activated receptors (PPAR) belong to the nuclear hormone receptor superfamily and there are three primary subtypes, PPARalpha, beta, and gamma. These receptors regulate important physiological processes that impact lipid homeostasis, inflammation, adipogenesis, reproduction, wound healing, and carcinogenesis. These nuclear receptors have important roles in reproduction and development and their expression may influence the responses of an embryo exposed to PPAR agonists. PPARs are relevant to the study of the biological effects of the perfluorinated alkyl acids as these compounds, including perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), activate PPARalpha. Exposure of the rodent to PFOA or PFOS during gestation results in neonatal deaths, developmental delay and growth deficits. Studies in PPARalpha knockout mice demonstrate that the developmental effects of PFOA, but not PFOS, depend on expression of PPARalpha. This review provides an overview of PPARalpha, beta, and gamma protein and mRNA expression during mouse, rat, and human development. The review presents the results from many published studies and the information is organized by organ system and collated to show patterns of expression at comparable developmental stages for human, mouse, and rat. The features of the PPAR nuclear receptor family are introduced and what is known or inferred about their roles in development is discussed relative to insights from genetically modified mice and studies in the adult.
Collapse
Affiliation(s)
- Barbara D Abbott
- Reproductive Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, US Environmental Protection Agency, Research Triangle Park, NC 27711, United States.
| |
Collapse
|
19
|
Administration of ciprofibrate to lactating mothers induces PPARalpha-signaling pathway in the liver and kidney of suckling rats. ACTA ACUST UNITED AC 2008; 60:33-41. [PMID: 18434116 DOI: 10.1016/j.etp.2007.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2007] [Accepted: 12/28/2007] [Indexed: 11/22/2022]
Abstract
It is well known that the hypolipidemic drug ciprofibrate induces peroxisome proliferation in rodent liver, which in turn leads to the oxidative stress, and modifies some parameters related to cell proliferation and apoptosis. The administration of ciprofibrate to rats during the lactating period determined in their pups significant modifications in hepatic peroxisome enzyme activities, induction of the PPARalpha-target gene, Cyp4a10, and perturbation in cell proliferation and apoptosis, which affected the size of the liver. Moreover, this modification was associated to about two-fold induction of mRNA-PPARalpha. On the contrary, in the kidney, although a similar two-fold up-regulation of PPARalpha was detected, the induction of both peroxisomal enzyme activities and Cyp4a10 were weak, and no alterations were detected, neither in cell cycle nor in the size of the tissue. Our results indicate that the response to ciprofibrate is stronger in the liver than in the kidney of newborn rats.
Collapse
|
20
|
Burdge GC, Slater-Jefferies J, Torrens C, Phillips ES, Hanson MA, Lillycrop KA. Dietary protein restriction of pregnant rats in the F0 generation induces altered methylation of hepatic gene promoters in the adult male offspring in the F1 and F2 generations. Br J Nutr 2007; 97:435-9. [PMID: 17313703 PMCID: PMC2211514 DOI: 10.1017/s0007114507352392] [Citation(s) in RCA: 351] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Epidemiological studies and experimental models show that maternal nutritional constraint during pregnancy alters the metabolic phenotype of the offspring and that this can be passed to subsequent generations. In the rat, induction of an altered metabolic phenotype in the liver of the F1 generation by feeding a protein-restricted diet (PRD) during pregnancy involves the altered methylation of specific gene promoters. We therefore investigated whether the altered methylation of PPARalpha and glucocorticoid receptor (GR) promoters was passed to the F2 generation. Females rats (F0) were fed a reference diet (180 g/kg protein) or PRD (90 g/kg protein) throughout gestation, and AIN-76A during lactation. The F1 offspring were weaned onto AIN-76A. F1 females were mated and fed AIN-76A throughout pregnancy and lactation. F1 and F2 males were killed on postnatal day 80. Hepatic PPARalpha and GR promoter methylation was significantly (P<0 x 05) lower in the PRD group in the F1 (PPARalpha 8 %, GR 10 %) and F2 (PPARalpha 11 %, GR 8 %) generations. There were trends (P<0 x 1) towards a higher expression of PPARalpha, GR, acyl-CoA oxidase and phosphoenolpyruvate carboxykinase (PEPCK) in the F1 and F2 males, although this was significant only for PEPCK. These data show for the first time that the altered methylation of gene promoters induced in the F1 generation by maternal protein restriction during pregnancy is transmitted to the F2 generation. This may represent a mechanism for the transmission of induced phenotypes between generations
Collapse
Affiliation(s)
- Graham C Burdge
- Developmental Origins of Health and Disease Division, University of Southampton, Southampton, UK.
| | | | | | | | | | | |
Collapse
|
21
|
Panadero M, Bocos C, Herrera E. Relationship between lipoprotein lipase and peroxisome proliferator-activated receptor-α expression in rat liver during development. J Physiol Biochem 2006; 62:189-98. [PMID: 17451160 DOI: 10.1007/bf03168468] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The present study was addressed to determine whether the high expression of peroxisome proliferator-activated receptor-alpha (PPAR-alpha) in rat liver during the perinatal stage plays a role in the induction of liver lipoprotein lipase (LPL) expression and activity. Parallel increases in liver mRNA PPAR-alpha and LPL activity were found in newborn rats, and after a slight decline, values remained elevated until weaning. Anticipated weaning for 3 days caused a decline in those two variables as well as in the mRNA LPL level, and a similar change was also found in liver triacylglycerol concentration. Force-feeding with Intralipid in 10-day-old rats or animals kept fasted for 5 h showed high mRNA-PPARalpha and -LPL levels as well as LPL activity with low plasma insulin and high FFA levels, whereas glucose and a combination of glucose and Intralipid produced low mRNA-PPARalpha and -LPL levels as well as LPL activity. Under these latter conditions, plasma insulin and FFA levels were high in those rats receiving the combination of glucose and Intralipid, whereas plasma FFA levels were low in those force-fed with glucose. It is proposed that the hormonal and nutritional induction of liver PPAR-alpha expression around birth and its maintained elevated level throughout suckling is responsible for the induction of liver LPL-expression and activity during suckling.
Collapse
Affiliation(s)
- M Panadero
- Facultad de Farmacia, Universidad San Pablo-CEU, E-28668 Boadilla del Monte, Madrid, Spain
| | | | | |
Collapse
|
22
|
Panadero M, Herrera E, Bocos C. Different sensitivity of PPARalpha gene expression to nutritional changes in liver of suckling and adult rats. Life Sci 2005; 76:1061-72. [PMID: 15607334 DOI: 10.1016/j.lfs.2004.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2004] [Accepted: 10/14/2004] [Indexed: 10/26/2022]
Abstract
The amount of peroxisome proliferator-activated receptor-alpha (PPARalpha) protein was markedly augmented in the liver of suckling rats compared to adult rats. This different PPARalpha abundance was used to study the sensitivity to nutritional changes in the expression and activity of this receptor. Thus, 10-day-old and adult rats were orally given either glucose, Intralipid or a combination of both diets, and liver mRNA levels of PPARalpha and the PPAR related genes, acyl-CoA oxidase (ACO) and phosphoenolpyruvate carboxykinase (PEPCK), and plasma metabolites were measured. In neonates, the expression of PPARalpha and ACO was seen to increase when the level of FFA in plasma was also high, unless an elevated level of insulin was also present. However, this fatty acid-induced effect was not detected in adult rats. On the contrary, the hepatic expression of PEPCK was modulated by the nutritional changes similarly in both neonates and adult rats. Thus, it may be concluded that the expression of the PPARalpha gene in adult rats seems to be less sensitive to nutritional changes than in neonates.
Collapse
Affiliation(s)
- Maribel Panadero
- Facultad de Ciencias Experimentales y de la Salud, Universidad San Pablo-CEU, Montepríncipe, Ctra. Boadilla del Monte Km. 5,300, 28668 Boadilla del Monte, Madrid, Spain
| | | | | |
Collapse
|
23
|
Balaguer SA, Pershing RA, Rodriguez-Sallaberry C, Thatcher WW, Badinga L. Effects of Bovine Somatotropin on Uterine Genes Related to the Prostaglandin Cascade in Lactating Dairy Cows. J Dairy Sci 2005; 88:543-52. [PMID: 15653519 DOI: 10.3168/jds.s0022-0302(05)72716-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Multiparous Holstein cows, averaging 80 d in milk, were used to examine the effect of exogenous bovine somatotropin (bST) on uterine expression of estrogen receptor alpha (ERalpha), prostaglandin endoperoxide synthase-2 (PGHS-2), and peroxisome proliferator-activated receptor delta (PPARdelta). About 12 h before expected ovulation in a synchronization protocol, cows were assigned to receive bST (500 mg, n = 11) or serve as untreated controls (n = 10). Cows that ovulated (n = 9 bST, 8 control) were divided within treatment to be killed on d 3 or 7 postovulation. Samples of intercaruncular endometrial tissue from uterine horns ipsilateral to the corpus luteum were collected and stored at -80 degrees C for subsequent mRNA analyses. Endometrial concentrations of ERalpha and PGHS-2 mRNA transcripts were greater on d 7 than on d 3 of the estrous cycle, but did not differ between treatments. Compared with untreated cows, short-term bST treatment decreased PGHS-2 protein expression at d 7 of the estrous cycle. Concentration of PPARdelta mRNA transcript in the uterus decreased between d 3 and 7 of the estrous cycle and was negatively correlated with ERalpha and PGHS-2 mRNA concentrations. Short-term administration of bST to lactating dairy cows had minimal effects on uterine genes encoding ERalpha, PGHS-2, and PPARdelta at d 3 and 7 of the estrous cycle but there may be an inverse relationship between PPARdelta and uterine expression of ERalpha and PGHS-2 genes.
Collapse
Affiliation(s)
- S A Balaguer
- Department of Animal Sciences, University of Florida, Gainesville 32611, USA
| | | | | | | | | |
Collapse
|
24
|
Ibabe A, Bilbao E, Cajaraville MP. Expression of peroxisome proliferator-activated receptors in zebrafish (Danio rerio) depending on gender and developmental stage. Histochem Cell Biol 2004; 123:75-87. [PMID: 15616845 DOI: 10.1007/s00418-004-0737-2] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2004] [Indexed: 01/09/2023]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are members of the superfamily of nuclear hormone receptors involved in embryo development and differentiation of several tissues in mammals. The aim of the present study was to investigate the possible differential expression of the three PPAR subtypes (PPARalpha, PPARbeta, and PPARgamma) in relation to gender and developmental stage in zebrafish. For this purpose PPAR expression was assessed by immunohistochemistry in 7-day-old larvae, 1-month-old juveniles, and 1-year-old adults. Additionally, the activity of peroxisomal acyl-CoA oxidase (AOX), a gene regulated by PPARs, and the volume density of catalase-immunolabeled liver peroxisomes (V(VP)) was examined. No significant gender-related differences were detected in the tissue distribution of the three PPAR subtypes or in peroxisomal AOX activity and V(VP). The percentage of PPARbeta-positive hepatocytes was significantly higher in females than in males suggesting a specific regulatory role of this subtype in female zebrafish. The three PPAR subtypes were already expressed at the larval stage, with a similar tissue distribution pattern to that found in adults. For all stages, PPARalpha and PPARgamma were expressed at higher levels than PPARbeta, and PPARbeta immunolabeling was stronger in juveniles than in larval or adult stages. The percentages of hepatocyte nuclei immunolabeled for PPARs was higher in early developmental stages than in adults, similarly to AOX activity and V(VP). In conclusion, our results indicate that PPAR expression, the activity of its target gene AOX, and peroxisomal biogenesis are developmentally modulated in zebrafish.
Collapse
Affiliation(s)
- Arantza Ibabe
- Biologia Zelularra eta Histologia Laborategia, Zoologia eta Animali Biologia Zelularra Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea/Universidad del País Vasco, 644 PK, 48080 Bilbo, Spain.
| | | | | |
Collapse
|
25
|
Yubero P, Hondares E, Carmona MC, Rossell M, Gonzalez FJ, Iglesias R, Giralt M, Villarroya F. The developmental regulation of peroxisome proliferator-activated receptor-gamma coactivator-1alpha expression in the liver is partially dissociated from the control of gluconeogenesis and lipid catabolism. Endocrinology 2004; 145:4268-77. [PMID: 15178647 DOI: 10.1210/en.2004-0099] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The developmental regulation of peroxisome proliferator-activated receptor-gamma coactivator-1alpha (PGC-1alpha) gene expression was studied in mice and compared with that of marker genes of liver energy metabolism. The PGC-1alpha gene was highly expressed in fetal liver compared with that in adults and remained high in neonatal liver. The regulation of PGC-1alpha gene expression during the fetal and early neonatal periods was dissociated from that of gluconeogenic genes, i.e. the phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) genes. Only under the effects of starvation was PGC-1alpha gene expression induced in parallel to phosphoenolpyruvate carboxykinase and G6Pase mRNAs during the perinatal period. Furthermore, the PGC-1alpha gene was not regulated as part of the developmental program of gene expression associated with the maturation of hepatic gluconeogenesis, as revealed by the impaired PEPCK and G6Pase gene expression but unaltered PGC-1alpha mRNA levels in CCAAT/enhancer-binding protein-alpha-null fetus and neonates. Regulation of the PGC-1alpha gene and that of mitochondrial 3-hydroxy-3-methyl-glutaryl-coenzyme A synthase, acyl-coenzyme A oxidase, and long-chain acyl-coenzyme dehydrogenase, marker genes of lipid catabolism, were dissociated in fetuses and neonates. The expression of lipid catabolism genes was down-regulated in fasted neonates, whereas PGC-1alpha was oppositely regulated. The independent regulation of PGC-1alpha and lipid catabolism genes was also found in peroxisome proliferator-activated receptor-alpha-null neonates, in which PGC-1alpha mRNA levels were unaffected whereas gene expression for 3-hydroxy-3-methyl-glutaryl-coenzyme A synthase and acyl-coenzyme A oxidase was impaired. Thus, regulation of the PGC-1alpha gene is partially dissociated from the patterns of regulation of hepatic genes encoding enzymes involved in gluconeogenesis and lipid catabolism during fetal ontogeny and in response to the initiation of lactation.
Collapse
Affiliation(s)
- Pilar Yubero
- Departament de Bioquímica i Biología Molecular, Universitat de Barcelona, Avda Diagonal 645, 08028 Barcelona, Spain
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Effect of reduced maternal protein consumption during pregnancy in the rat on plasma lipid concentrations and expression of peroxisomal proliferator–activated receptors in the liver and adipose tissue of the offspring. Nutr Res 2004. [DOI: 10.1016/j.nutres.2003.12.009] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
27
|
Jalouli M, Carlsson L, Améen C, Lindén D, Ljungberg A, Michalik L, Edén S, Wahli W, Oscarsson J. Sex difference in hepatic peroxisome proliferator-activated receptor alpha expression: influence of pituitary and gonadal hormones. Endocrinology 2003; 144:101-9. [PMID: 12488335 DOI: 10.1210/en.2002-220630] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Peroxisome proliferator-activated receptor (PPAR) alpha is a nuclear receptor that is mainly expressed in tissues with a high degree of fatty acid oxidation such as liver, heart, and skeletal muscle. Unsaturated fatty acids, their derivatives, and fibrates activate PPARalpha. Male rats are more responsive to fibrates than female rats. We therefore wanted to investigate if there is a sex difference in PPARalpha expression. Male rats had higher levels of hepatic PPARalpha mRNA and protein than female rats. Fasting increased hepatic PPARalpha mRNA levels to a similar degree in both sexes. Gonadectomy of male rats decreased PPARalpha mRNA expression to similar levels as in intact and gonadectomized female rats. Hypophysectomy increased hepatic PPARalpha mRNA and protein levels. The increase in PPARalpha mRNA after hypophysectomy was more pronounced in females than in males. GH treatment decreased PPARalpha mRNA and protein levels, but the sex-differentiated secretory pattern of GH does not determine the sex-differentiated expression of PPARalpha. The expression of PPARalpha mRNA in heart or soleus muscle was not influenced by gender, gonadectomy, hypophysectomy, or GH treatment. In summary, pituitary-dependent hormones specifically regulate hepatic PPARalpha expression. Sex hormones regulate the sex difference in hepatic PPARalpha levels, but not via the sexually dimorphic GH secretory pattern.
Collapse
Affiliation(s)
- Masoumeh Jalouli
- Department of Physiology and Pharmacology, Göteborg University, Göteborg S-405 30, Sweden
| | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Panadero M, Vidal H, Herrera E, Bocos C. Nutritionally induced changes in the peroxisome proliferator-activated receptor-alpha gene expression in liver of suckling rats are dependent on insulinaemia. Arch Biochem Biophys 2001; 394:182-8. [PMID: 11594732 DOI: 10.1006/abbi.2001.2508] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
It was previously found that the expression of peroxisome proliferator-activated receptor-alpha (PPARalpha) was markedly augmented in the liver of suckling rats, in comparison to the fetuses and most notably to adult rats and it paralleled similar changes in hepatic lipid concentration. To determine whether these changes could be related to the high lipid content of the maternal milk and/or to hormonal status, the role of changes in nutrient availability and in plasma insulin concentration on liver expression during the perinatal stage in vivo in the rat was studied. When suckling rats were weaned on day 17, instead of on day 20, the level of hepatic PPARalpha mRNA decreased earlier than in rats weaned later. When 10-day-old rats were force-fed with either glucose or Intralipid or a combination of both diets, it was found that, at similar low levels of plasma insulin, a high level of FFA stimulated PPARalpha expression, whereas, at similar high plasma FFA concentrations, an elevated insulin level attenuated the increase in PPARalpha expression. It is proposed that both the high lipid intake and decreased plasma insulin level are responsible for the high PPARalpha expression detected in rat neonates.
Collapse
MESH Headings
- Acyl-CoA Oxidase
- Administration, Oral
- Aging/metabolism
- Animal Nutritional Physiological Phenomena
- Animals
- Animals, Suckling
- Diet
- Fat Emulsions, Intravenous/administration & dosage
- Fat Emulsions, Intravenous/metabolism
- Fatty Acids, Nonesterified/blood
- Female
- Gene Expression Regulation
- Glucose/administration & dosage
- Glucose/metabolism
- Insulin/blood
- Lipid Metabolism
- Lipids/analysis
- Liver/chemistry
- Liver/metabolism
- Oxidoreductases/genetics
- Oxidoreductases/metabolism
- RNA, Messenger/analysis
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Weaning
Collapse
Affiliation(s)
- M Panadero
- Facultad de Ciencias Experimentales y Técnicas, Universidad San Pablo-CEU, Madrid, Spain
| | | | | | | |
Collapse
|