1
|
Su Y, Yu Y, Quan J, Zhang J, Xu Y. Alcohol exposure during pregnancy induces cardiac mitochondrial damage in offspring mice. Birth Defects Res 2024; 116:e2369. [PMID: 38877673 DOI: 10.1002/bdr2.2369] [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: 01/29/2024] [Revised: 05/15/2024] [Accepted: 05/23/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Prenatal alcohol exposure (PAE) has been linked to congenital heart disease and fetal alcohol syndrome. The heart primarily relies on mitochondria to generate energy, so impaired mitochondrial function due to alcohol exposure can significantly affect cardiac development and function. Our study aimed to investigate the impact of PAE on myocardial and mitochondrial functions in offspring mice. METHODS We administered 30% alcohol (3 g/kg) to pregnant C57BL/6 mice during the second trimester. We assessed cardiac function by transthoracic echocardiography, observed myocardial structure and fibrosis through staining tests and electron transmission microscopy, and detected cardiomyocyte apoptosis with dUTP nick end labeling assay and real-time quantitative PCR. Additionally, we measured the reactive oxygen species content, ATP level, and mitochondrial DNA copy number in myocardial mitochondria. Mitochondrial damage was evaluated by assessing the level of mitochondrial membrane potential and the opening degree of mitochondrial permeability transition pores. RESULTS Our findings revealed that PAE caused cardiac systolic dysfunction, ventricular enlargement, thinned ventricular wall, cardiac fibrosis in the myocardium, scattered loss of cardiomyocytes, and disordered arrangement of myocardial myotomes in the offspring. Furthermore, we observed a significant increase in mitochondrial reactive oxygen species content, a decrease in mitochondrial membrane potential, ATP level, and mitochondrial DNA copy number, and sustained opening of mitochondrial permeability transition pores in the heart tissues of the offspring. CONCLUSIONS These results indicated that PAE had adverse effects on the cardiac structure and function of the newborn mice and could trigger oxidative stress in their myocardia and contribute to mitochondrial dysfunction.
Collapse
Affiliation(s)
- Yujuan Su
- Department of Anesthesiology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yujuan Yu
- Department of Anesthesiology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Junjun Quan
- Department of Anesthesiology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Junjie Zhang
- Department of Anesthesiology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ying Xu
- Department of Anesthesiology, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| |
Collapse
|
2
|
Sahebnasagh A, Avan R, Monajati M, Hashemi J, Habtemariam S, Negintaji S, Saghafi F. L-carnitine: Searching for New Therapeutic Strategy for Sepsis Management. Curr Med Chem 2021; 29:3300-3323. [PMID: 34789120 DOI: 10.2174/0929867328666211117092345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 11/22/2022]
Abstract
In this review, we discussed the biological targets of carnitine, its effects on immune function, and how L-carnitine supplementation may help critically ill patients. L-carnitine is a potent antioxidant. L-carnitine depletion has been observed in prolonged intensive care unit (ICU) stays, while L-carnitine supplementation has beneficial effects in health promotion and regulation of immunity. It is essential for the uptake of fatty acids into mitochondria. By inhibiting the ubiquitin-proteasome system, down-regulation of apelin receptor in cardiac tissue, and reducing β-oxidation of fatty acid, carnitine may decrease vasopressor requirement in septic shock and improve clinical outcomes of this group of patients. We also have an overview of animal and clinical studies that have been recruited for evaluating the beneficial effects of L-carnitine in the management of sepsis/ septic shock. Additional clinical data are required to evaluate the optimal daily dose and duration of L-carnitine supplementation.
Collapse
Affiliation(s)
- Adeleh Sahebnasagh
- Clinical Research Center, Department of Internal Medicine, North Khorasan University of Medical Sciences, Bojnurd. Iran
| | - Razieh Avan
- Department of Clinical Pharmacy, Medical Toxicology and Drug Abuse Research Center (MTDRC), Faculty of Pharmacy, Birjand University of Medical Sciences, Birjand. Iran
| | - Mahila Monajati
- Department of Internal Medicine, Golestan University of Medical Sciences, Gorgan. Iran
| | - Javad Hashemi
- Department of Pathobiology and Laboratory Sciences, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd. Iran
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories and Herbal Analysis Services, School of Science, University of Greenwich, Central Avenue, Chatham-Maritime, Kent ME4 4TB. United Kingdom
| | - Sina Negintaji
- Student Research Committee, School of Pharmacy, Shahid Sadoughi University of Medical Sciences, Yazd. Iran
| | - Fatemeh Saghafi
- Department of Clinical Pharmacy, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Shahid Sadoughi University of Medical Sciences, Yazd. Iran
| |
Collapse
|
3
|
Popova TA, Kustova MV, Khusainova GK, Perfilova VN, Prokofiev II, Smolnyakova YA, Borodkina LE, Tyurenkov IN, Ostrovskiy OV, Vasil’eva OS. Changes in the respiratory function of the heart and brain mitochondria of animals after chronic alcohol intoxication affected by a new GABA derivative. RESEARCH RESULTS IN PHARMACOLOGY 2021. [DOI: 10.3897/rrpharmacology.7.60469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: Chronic ethanol consumption leads to significant functional and structural changes in the mitochondria of the heart and brain, increasing generation of reactive oxygen species. Therefore, the search for substances, which improve the functional state of the mitochondria and, meantime, reduce the oxidative stress, is relevant.
Materials and methods: 10-months-old Wistar female rats were used in the experiments. Chronic alcohol intoxication (CAI) was modelled by replacing drinking water with a 10% ethanol solution containing sucrose (50 g/L) for 24 weeks. Four groups were formed: 1 – intact animals; 2 – animals after chronic alcohol consumption; 3 – rats after CAI which were administered RSPU-260 (25 mg/kg); 4 – rats after CAI which were administered the reference drug Mildronate (50 mg/kg). The intensity of lipid peroxidation (LPO) and the rate of oxygen consumption in various metabolic states were determined.
Results and discussion: Administration of the compound RSPU-260 to the animals exposed to alcohol over a long period of time resulted in an increase in both the rate of oxygen consumption (state 3) and the respiratory control ratio (RCR) of the mitochondria of heart and brain cells. The use of a GABA derivative promoted a decrease in malonic dialdehyde in the mitochondria of the heart and brain. Total SOD activity in the mitochondria of heart cells was significantly increased in the groups of rats treated with RSPU-260. In terms of efficiency, the compound RSPU-260 was comparable to the reference drug Mildronate.
Conclusions: The compound RSPU-260, and the reference drug Mildronate improve mitochondrial oxidative phosphorylation in heart and brain cells, the functioning of antioxidant enzymes in animals after CAI, and can be used to correct alcoholic damage to these organs.
Collapse
|
4
|
Sherif NA, El-Banna AS, ElBourini MM, Khalil NO. Efficacy of L-carnitine and propranolol in the management of acute theophylline toxicity. Toxicol Res (Camb) 2020; 9:45-54. [PMID: 32440337 DOI: 10.1093/toxres/tfaa002] [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: 12/06/2019] [Revised: 12/06/2019] [Accepted: 01/31/2020] [Indexed: 11/13/2022] Open
Abstract
Theophylline toxicity results in substantial morbidity and mortality particularly due to its narrow therapeutic index. The development of new treatments for acute theophylline toxicity is a point of research interest. The aim of the present work was to assess the efficacy of L-carnitine (LC) and propranolol in the management of patients with acute theophylline toxicity. The study was conducted on 60 patients with acute theophylline toxicity admitted to the Poison Control Center or Intensive Care Unit at Alexandria Main University Hospital. The studied patients were equally classified into four groups (GPs, 15 patients each): the first group was the control group who received standard treatment protocol for theophylline toxicity. The other three GPs also received standard treatment protocol for theophylline toxicity in addition. The second group (LC group) received LC with a loading dose of 100 mg/kg IV over 30-60 min (maximum 6 g) and the maintenance dose was 50 mg/kg IV every 8 h. The third group (propranolol group) received propranolol, administered slowly intravenous 0.5-1 mg over 1 min; it may be repeated if necessary up to a total maximum dose of 0.1 mg/kg. The fourth group (propranolol and LC) received both IV propranolol and LC in the same doses as previous. Treatment with LC alone or in combination with propranolol resulted in a significant improvement of both clinical and laboratory findings. Although combined therapy yields the best results and outcome, LC can serve as an antidote for acute theophylline toxicity if there is any contraindication to propranolol administration.
Collapse
Affiliation(s)
- Naima A Sherif
- Department of Forensic Medicine& Clinical Toxicology-Faculty of Medicine, Alexandria University, Egypt
| | - Asmaa S El-Banna
- Department of Forensic Medicine& Clinical Toxicology-Faculty of Medicine, Alexandria University, Egypt
| | - Marwan M ElBourini
- Critical Care Medicine, Faculty of Medicine, Alexandria University, Egypt
| | - Nancy O Khalil
- Department of Forensic Medicine& Clinical Toxicology-Faculty of Medicine, Alexandria University, Egypt
| |
Collapse
|
5
|
Zhang DM, Guo ZX, Zhao YL, Wang QJ, Gao YS, Yu T, Chen YK, Chen XM, Wang GQ. L-carnitine regulated Nrf2/Keap1 activation in vitro and in vivo and protected oxidized fish oil-induced inflammation response by inhibiting the NF-κB signaling pathway in Rhynchocypris lagowski Dybowski. FISH & SHELLFISH IMMUNOLOGY 2019; 93:1100-1110. [PMID: 31422179 DOI: 10.1016/j.fsi.2019.08.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/10/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
Nrf2/Keap1 pathway is associated with oxidative stress. l-carnitine is currently under preclinical evaluation as a antioxidant, but the use of l-carnitine in aquaculture has been poorly evaluated and so far no mechanism has been demonstrated. Here, we explored the effects of l-carnitine in vitro and in vivo and discussed the possible molecular mechanisms involved. Firstly, Nrf2-siRNA significantly knocked down the mRNA level of Nrf2 in FHM cells. Thus, the activities of antioxidant enzymes (T-SOD, CAT, GSH-PX) and the level of antioxidant substance (GSH) and the level of MDA showed that Nrf2-siRNA pretreatment weakened the protective effect of l-carnitine. Moreover, the mRNA levels of Keap1, Nrf2, Maf and HO-1 indicated that l-carnitine regulated Nrf2/Keap1 activation. Furthermore, oxidized fish oil remarkably suppressed growth in Rhynchocypris lagowski Dybowski, and the lower antioxidant capacity was also observed in liver. According to the results of immune related indexes (the levels of IL-1β, TNF-α, LZM, AKP) in serum and the mRNA levels of immune related genes (NF-κB, IL-1β, TNF-α, IL-8, IL-10 and TGF-β) in liver, oxidized fish oil also induced inflammatory response in fish. Also, l-carnitine supplementation can relieve this bad condition. In conclusion, l-carnitine regulated Nrf2/Keap1 activation in vitro and in vivo and protected oxidized fish oil-induced inflammation response by inhibiting the NF-κB signaling pathway in Rhynchocypris lagowski Dybowski.
Collapse
Affiliation(s)
- Dong-Ming Zhang
- College of Life Science, Tonghua Normal University, Tonghua, Jilin, 134001, China; College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Zhi-Xin Guo
- College of Life Science, Tonghua Normal University, Tonghua, Jilin, 134001, China
| | - Yun-Long Zhao
- College of Life Science, Tonghua Normal University, Tonghua, Jilin, 134001, China
| | - Qiu-Ju Wang
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Yong-Sheng Gao
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Ting Yu
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Yu-Ke Chen
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Xiu-Mei Chen
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China.
| | - Gui-Qin Wang
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
| |
Collapse
|
6
|
Popova TA, Prokofiev II, Khusainova GK, Perfilova VN, Kustova MV, Tyurenkov IN, Bagmetova VV, Ostrovsky OV, Dudchenko GP. Age-Related Changes in the Functional Indices of Cardiac Mitochondria in Chronic Alcohol Intoxication in Rats. ADVANCES IN GERONTOLOGY 2019. [DOI: 10.1134/s2079057019030123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
7
|
Steiner JL, Lang CH. Etiology of alcoholic cardiomyopathy: Mitochondria, oxidative stress and apoptosis. Int J Biochem Cell Biol 2017; 89:125-135. [PMID: 28606389 DOI: 10.1016/j.biocel.2017.06.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/16/2022]
Abstract
Putative mechanisms leading to the development of alcoholic cardiomyopathy (ACM) include the interrelated cellular processes of mitochondria metabolism, oxidative stress and apoptosis. As mitochondria fuel the constant energy demands of this continually contracting tissue, it is not surprising that alcohol-induced molecular changes in this organelle contribute to cardiac dysfunction and ACM. As the causal relationship of these processes with ACM has already been established, the primary objective of this review is to provide an update of the experimental findings to more completely understand the aforementioned mechanisms. Accordingly, recent data indicate that alcohol impairs mitochondria function assessed by membrane potential and respiratory chain activity. Indictors of oxidative stress including superoxide dismutase, glutathione metabolites and malondialdehyde are also adversely affected by alcohol oftentimes in a sex-dependent manner. Additionally, myocardial apoptosis is increased based on assessment of TUNEL staining and caspase activity. Recent work has also emerged linking alcohol-induced oxidative stress with apoptosis providing new insight on the codependence of these interrelated mechanisms in ACM. Attention is also given to methodological differences including the dose of alcohol, experimental model system and the use of males versus females to highlight inconsistencies and areas that would benefit from establishment of a consistent model.
Collapse
Affiliation(s)
- Jennifer L Steiner
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, United States.
| | - Charles H Lang
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, United States.
| |
Collapse
|
8
|
Mashimo K, Arthur PG, Ohno Y. Ethanol Dose- and Time-dependently Increases α and β Subunits of Mitochondrial ATP Synthase of Cultured Neonatal Rat Cardiomyocytes. J NIPPON MED SCH 2016; 82:237-45. [PMID: 26568390 DOI: 10.1272/jnms.82.237] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Mitochondria are target subcellular organelles of ethanol. In this study, the effects of ethanol on protein composition was examined with 2-dimensional electrophoresis of protein extracts from cultured neonatal rat cardiomyocytes exposed to 100 mM ethanol for 24 hours. A putative β subunit of mitochondrial ATP synthase was increased, which was confirmed by Western blot. The cellular protein abundances in the α and β subunits of ATP synthase increased in dose (0, 10, 50, and 100 mM) - and time (0.5 hour and 24 hours) -dependent manners. The DNA microarray analysis of total RNA extract demonstrated that gene expression of the corresponding messenger RNAs of these subunit proteins did not significantly alter due to 24-hour ethanol exposure. Therefore, protein expression of these nuclear-encoded mitochondrial proteins may be regulated at the translational, rather than the transcriptional, level. Alternatively, degradation of these subunit proteins might be decreased. Additionally, cellular ATP content of cardiomyocytes scarcely decreased following 24-hour exposure to any examined concentrations of ethanol. Previous studies, together with this study, have demonstrated that protein abundance of the α subunit or β subunit or both subunits of ATP synthase after ethanol exposure or dysfunctional conditions might differ according to tissue: significant increases in heart but decreases in liver and brain. Thus, it is suggested that the abundance of subunit proteins of mitochondrial ATP synthase in the ethanol-exposed heart, being different from that in the liver and brain, should increase dose-dependently through either translational upregulation or decreased degradation or both to maintain ATP production, as the heart requires much more energy than other tissues for continuing sustained contractions.
Collapse
|
9
|
Aydin A, Halici Z, Albayrak A, Polat B, Karakus E, Yildirim OS, Bayir Y, Cadirci E, Ayan AK, Aksakal AM. Treatment with Carnitine Enhances Bone Fracture Healing under Osteoporotic and/or Inflammatory Conditions. Basic Clin Pharmacol Toxicol 2015; 117:173-9. [PMID: 25625309 DOI: 10.1111/bcpt.12384] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/12/2015] [Indexed: 01/20/2023]
Abstract
The aim of this study was to examine the effects of carnitine on bone healing in ovariectomy (OVX) and inflammation (INF)-induced osteoporotic rats. The rats were randomly divided into nine groups (n = 8 animals per group): sham-operated (Group 1: SHAM); sham + magnesium silicate (Mg-silicate) (Group 2: SHAM + INF); ovariectomy (Group 3: OVX); ovariectomy + femoral fracture (Group 4: OVX + FRC); ovariectomy + femoral fracture + Mg-silicate (Group 5: OVX + FRC + INF); ovariectomy + femoral fracture + carnitine 50 mg/kg (Group 6: OVX + FRC + CAR50); ovariectomy + femoral fracture + carnitine 100 mg/kg (Group 7: OVX + FRC + CAR100); ovariectomy + femoral fracture + Mg-silicate + carnitine 50 mg/kg (Group 8: OVX + FRC + INF + CAR50); and ovariectomy + femoral fracture + Mg-silicate + carnitine 100 mg/kg (Group 9: OVX + FRC + INF + CAR100). Eight weeks after OVX, which allowed for osteoporosis to develop, INF was induced with subcutaneous Mg-silicate. On day 80, all of the rats in groups 4-9 underwent fracture operation on the right femur. Bone mineral density (BMD) showed statistically significant improvements in the treatment groups. The serum markers of bone turnover (osteocalcin and osteopontin) and pro-inflammatory cytokines (tumour necrosis factor α, interleukin 1β and interleukin 6) were decreased in the treatment group. The X-ray images showed significantly increased callus formation and fracture healing in the groups treated with carnitine. The present results show that in a rat model with osteoporosis induced by ovariectomy and Mg-silicate, treatment with carnitine improves the healing of femur fractures.
Collapse
Affiliation(s)
- Ali Aydin
- Department of Orthopedics and Traumatology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Zekai Halici
- Department of Pharmacology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Abdulmecit Albayrak
- Department of Pharmacology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Beyzagul Polat
- Department of Pharmacology, Ataturk University Faculty of Pharmacy, Erzurum, Turkey
| | - Emre Karakus
- Department of Pharmacology, Ataturk University Faculty of Veterinary Medicine, Erzurum, Turkey
| | - Omer Selim Yildirim
- Department of Orthopedics and Traumatology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Yasin Bayir
- Department of Biochemistry, Ataturk University Faculty of Pharmacy, Erzurum, Turkey
| | - Elif Cadirci
- Department of Pharmacology, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Arif Kursad Ayan
- Department of Nuclear Medicine, Ataturk University Faculty of Medicine, Erzurum, Turkey
| | - Ahmet Murat Aksakal
- Department of Orthopedics and Traumatology, Sevket Yilmaz Education and Research Hospital, Bursa, Turkey
| |
Collapse
|
10
|
Ribas GS, Vargas CR, Wajner M. L-carnitine supplementation as a potential antioxidant therapy for inherited neurometabolic disorders. Gene 2013; 533:469-76. [PMID: 24148561 DOI: 10.1016/j.gene.2013.10.017] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/02/2013] [Accepted: 10/09/2013] [Indexed: 01/11/2023]
Abstract
In recent years increasing evidence has emerged suggesting that oxidative stress is involved in the pathophysiology of a number of inherited metabolic disorders. However the clinical use of classical antioxidants in these diseases has been poorly evaluated and so far no benefit has been demonstrated. l-Carnitine is an endogenous substance that acts as a carrier for fatty acids across the inner mitochondrial membrane necessary for subsequent beta-oxidation and ATP production. Besides its important role in the metabolism of lipids, l-carnitine is also a potent antioxidant (free radical scavenger) and thus may protect tissues from oxidative damage. This review addresses recent findings obtained from patients with some inherited neurometabolic diseases showing that l-carnitine may be involved in the reduction of oxidative damage observed in these disorders. For some of these diseases, reduced concentrations of l-carnitine may occur due to the combination of this compound to the accumulating toxic metabolites, especially organic acids, or as a result of protein restricted diets. Thus, l-carnitine supplementation may be useful not only to prevent tissue deficiency of this element, but also to avoid oxidative damage secondary to increased production of reactive species in these diseases. Considering the ability of l-carnitine to easily cross the blood-brain barrier, l-carnitine supplementation may also be beneficial in preventing neurological damage derived from oxidative injury. However further studies are required to better explore this potential.
Collapse
Affiliation(s)
- Graziela S Ribas
- Federal University of Rio Grande do Sul, Brazil; Serviço de Genética Médica, HCPA, Ramiro Barcelos 2350, Porto Alegre, RS 90035-903, Brazil
| | | | | |
Collapse
|
11
|
Strilakou AA, Lazaris AC, Perelas AI, Mourouzis IS, Douzis IC, Karkalousos PL, Stylianaki AT, Pantos CI, Liapi CA. Heart dysfunction induced by choline-deficiency in adult rats: The protective role of l-carnitine. Eur J Pharmacol 2013; 709:20-7. [DOI: 10.1016/j.ejphar.2013.03.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 03/06/2013] [Accepted: 03/07/2013] [Indexed: 11/16/2022]
|
12
|
The renoprotective effect of l-carnitine in hypertensive rats is mediated by modulation of oxidative stress-related gene expression. Eur J Nutr 2012; 52:1649-59. [DOI: 10.1007/s00394-012-0470-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 11/16/2012] [Indexed: 02/07/2023]
|
13
|
Current World Literature. Curr Opin Nephrol Hypertens 2012; 21:106-18. [DOI: 10.1097/mnh.0b013e32834ee42b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
14
|
Zhang Y, Ren J. ALDH2 in alcoholic heart diseases: molecular mechanism and clinical implications. Pharmacol Ther 2011; 132:86-95. [PMID: 21664374 DOI: 10.1016/j.pharmthera.2011.05.008] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 05/13/2011] [Indexed: 01/12/2023]
Abstract
Alcoholic cardiomyopathy is manifested as cardiac hypertrophy, disrupted contractile function and myofibrillary architecture. An ample amount of clinical and experimental evidence has depicted a pivotal role for alcohol metabolism especially the main alcohol metabolic product acetaldehyde, in the pathogenesis of this myopathic state. Findings from our group and others have revealed that the mitochondrial isoform of aldehyde dehydrogenase (ALDH2), which metabolizes acetaldehyde, governs the detoxification of acetaldehyde formed following alcohol consumption and the ultimate elimination of alcohol from the body. The ALDH2 enzymatic cascade may evolve as a unique detoxification mechanism for environmental alcohols and aldehydes to alleviate the undesired cardiac anomalies in ischemia-reperfusion and alcoholism. Polymorphic variants of the ALDH2 gene encode enzymes with altered pharmacokinetic properties and a significantly higher prevalence of cardiovascular diseases associated with alcoholism. The pathophysiological effects of ALDH2 polymorphism may be mediated by accumulation of acetaldehyde and other reactive aldehydes. Inheritance of the inactive ALDH2*2 gene product is associated with a decreased risk of alcoholism but an increased risk of alcoholic complications. This association is influenced by gene-environment interactions such as those associated with religion and national origin. The purpose of this review is to recapitulate the pathogenesis of alcoholic cardiomyopathy with a special focus on ALDH2 enzymatic metabolism. It will be important to dissect the links between ALDH2 polymorphism and prevalence of alcoholic cardiomyopathy, in order to determine the mechanisms underlying such associations. The therapeutic value of ALDH2 as both target and tool in the management of alcoholic tissue damage will be discussed.
Collapse
Affiliation(s)
- Yingmei Zhang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | | |
Collapse
|