1
|
Song YH, Lei HX, Yu D, Zhu H, Hao MZ, Cui RH, Meng XS, Sheng XH, Zhang L. Endogenous chemicals guard health through inhibiting ferroptotic cell death. Biofactors 2024; 50:266-293. [PMID: 38059412 DOI: 10.1002/biof.2015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 10/17/2023] [Indexed: 12/08/2023]
Abstract
Ferroptosis is a new form of regulated cell death caused by iron-dependent accumulation of lethal polyunsaturated phospholipids peroxidation. It has received considerable attention owing to its putative involvement in a wide range of pathophysiological processes such as organ injury, cardiac ischemia/reperfusion, degenerative disease and its prevalence in plants, invertebrates, yeasts, bacteria, and archaea. To counter ferroptosis, living organisms have evolved a myriad of intrinsic efficient defense systems, such as cyst(e)ine-glutathione-glutathione peroxidase 4 system (cyst(e)ine-GPX4 system), guanosine triphosphate cyclohydrolase 1/tetrahydrobiopterin (BH4) system (GCH1/BH4 system), ferroptosis suppressor protein 1/coenzyme Q10 system (FSP1/CoQ10 system), and so forth. Among these, GPX4 serves as the only enzymatic protection system through the reduction of lipid hydroperoxides, while other defense systems ultimately rely on small compounds to scavenge lipid radicals and prevent ferroptotic cell death. In this article, we systematically summarize the chemical biology of lipid radical trapping process by endogenous chemicals, such as coenzyme Q10 (CoQ10), BH4, hydropersulfides, vitamin K, vitamin E, 7-dehydrocholesterol, with the aim of guiding the discovery of novel ferroptosis inhibitors.
Collapse
Affiliation(s)
- Yuan-Hao Song
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Hong-Xu Lei
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
- Department of Chemistry, University of Chinese Academy of Sciences, Beijing, China
| | - Dou Yu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Hao Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Meng-Zhu Hao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Rong-Hua Cui
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Xiang-Shuai Meng
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Xie-Huang Sheng
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan, China
| | - Lei Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Tissue Engineering Laboratory, Jinan, China
- Department of Radiology, Shandong First Medical University, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan, China
| |
Collapse
|
2
|
Townsend JR, Kirby TO, Marshall TM, Church DD, Jajtner AR, Esposito R. Foundational Nutrition: Implications for Human Health. Nutrients 2023; 15:2837. [PMID: 37447166 DOI: 10.3390/nu15132837] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Human nutrition, and what can be considered "ideal" nutrition, is a complex, multi-faceted topic which many researchers and practitioners deliberate. While some attest that basic human nutrition is relatively understood, it is undeniable that a global nutritional problem persists. Many countries struggle with malnutrition or caloric deficits, while others encounter difficulties with caloric overconsumption and micronutrient deficiencies. A multitude of factors contribute to this global problem. Limitations to the current scope of the recommended daily allowances (RDAs) and dietary reference intakes (DRIs), changes in soil quality, and reductions in nutrient density are just a few of these factors. In this article, we propose a new, working approach towards human nutrition designated "Foundational Nutrition". This nutritional lens combines a whole food approach in conjunction with micronutrients and other nutrients critical for optimal human health with special consideration given to the human gut microbiome and overall gut health. Together, this a synergistic approach which addresses vital components in nutrition that enhances the bioavailability of nutrients and to potentiate a bioactive effect.
Collapse
Affiliation(s)
- Jeremy R Townsend
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA
- Department of Kinesiology, Lipscomb University, Nashville, TN 37204, USA
| | - Trevor O Kirby
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA
| | - Tess M Marshall
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA
| | - David D Church
- Department of Geriatrics, Center for Translational Research in Aging & Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Adam R Jajtner
- Exercise Science and Exercise Physiology, Kent State University, Kent, OH 44240, USA
| | - Ralph Esposito
- Research, Nutrition, and Innovation, Athletic Greens International, Carson City, NV 89701, USA
- Department of Nutrition, Food Studies, and Public Health, New York University-Steinhardt, New York, NY 10003, USA
| |
Collapse
|
3
|
Fakhrolmobasheri M, Hosseini MS, Shahrokh SG, Mohammadi Z, Kahlani MJ, Majidi SE, Zeinalian M. Coenzyme Q10 and Its Therapeutic Potencies Against COVID-19 and Other Similar Infections: A Molecular Review. Adv Pharm Bull 2023; 13:233-243. [PMID: 37342382 PMCID: PMC10278218 DOI: 10.34172/apb.2023.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 10/09/2021] [Accepted: 11/06/2021] [Indexed: 08/25/2023] Open
Abstract
Purpose: New lethal coronavirus disease 2019 (COVID-19), currently, has been converted to a disastrous pandemic worldwide. As there has been found no definitive treatment for the infection in this review we focused on molecular aspects of coenzyme Q10 (CoQ10) and possible therapeutic potencies of CoQ10 against COVID-19 and similar infections. Methods: This is a narrative review in which we used some authentic resources including PubMed, ISI, Scopus, Science Direct, Cochrane, and some preprint databases, the molecular aspects of CoQ10 effects, regarding to the COVID-19 pathogenesis, have been analyzed and discussed. Results: CoQ10 is an essential cofactor in the electron transport chain of the phosphorylative oxidation system. It is a powerful lipophilic antioxidant, anti-apoptotic, immunomodulatory and anti-inflammatory supplement which has been tested for the management and prevention of a variety of diseases particularly diseases with inflammatory pathogenesis. CoQ10 is a strong anti-inflammatory agent which can reduce tumor necrosis factor-α (TNF-α), interleukin (IL)- 6, C-reactive protein (CRP), and other inflammatory cytokines. The cardio-protective role of CoQ10 in improving viral myocarditis and drug induced cardiotoxicity has been determined in different studies. CoQ10 could also improve the interference in the RAS system caused by COVID-19 through exerting anti-Angiotensin II effects and decreasing oxidative stress. CoQ10 passes easily through blood-brain barrier (BBB). As a neuroprotective agent CoQ10 can reduce oxidative stress and modulate the immunologic reactions. These properties may help to reduce CNS inflammation and prevent BBB damage and neuronal apoptosis in COVID-19 patients. Conclusion: CoQ10 supplementation may prevent the COVID-19-induced morbidities with a potential protective role against the deleterious consequences of the disease, further clinical evaluations are encouraged.
Collapse
Affiliation(s)
- Mohammad Fakhrolmobasheri
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical sciences, Isfahan, Iran
| | - Mahnaz-Sadat Hosseini
- School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyedeh-Ghazal Shahrokh
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical sciences, Isfahan, Iran
| | - Zahra Mohammadi
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad-Javad Kahlani
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Sciences and Technologies, University of Isfahan, Isfahan, Iran
| | - Seyed-Erfan Majidi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical sciences, Isfahan, Iran
| | - Mehrdad Zeinalian
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical sciences, Isfahan, Iran
- Pediatric Inherited Disease Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
- Iranians Cancer Control Charity Institute (MACSA), Isfahan, Iran
| |
Collapse
|
4
|
Gherardi G, Corbioli G, Ruzza F, Rizzuto R. CoQ 10 and Resveratrol Effects to Ameliorate Aged-Related Mitochondrial Dysfunctions. Nutrients 2022; 14:4326. [PMID: 36297010 PMCID: PMC9611139 DOI: 10.3390/nu14204326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Mitochondria participate in the maintenance of cellular homeostasis. Firstly, mitochondria regulate energy metabolism through oxidative phosphorylation. In addition, they are involved in cell fate decisions by activating the apoptotic intrinsic pathway. Finally, they work as intracellular signaling hubs as a result of their tight regulation of ion and metabolite concentrations and other critical signaling molecules such as ROS. Aging is a multifactorial process triggered by impairments in different cellular components. Among the various molecular pathways involved, mitochondria are key regulators of longevity. Indeed, mitochondrial deterioration is a critical signature of the aging process. In this scenario, we will focus specifically on the age-related decrease in CoQ levels, an essential component of the electron transport chain (ETC) and an antioxidant, and how CoQ supplementation could benefit the aging process. Generally, any treatment that improves and sustains mitochondrial functionality is a good candidate to counteract age-related mitochondrial dysfunctions. In recent years, heightened attention has been given to natural compounds that modulate mitochondrial function. One of the most famous is resveratrol due to its ability to increase mitochondrial biogenesis and work as an antioxidant agent. This review will discuss recent clinical trials and meta-analyses based on resveratrol and CoQ supplementation, focusing on how these compounds could improve mitochondrial functionality during aging.
Collapse
Affiliation(s)
- Gaia Gherardi
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| | - Giovanni Corbioli
- Solgar Italia Multinutrient Spa, Via Prima Strada 23/3, 35129 Padova, Italy
| | - Filippo Ruzza
- Solgar Italia Multinutrient Spa, Via Prima Strada 23/3, 35129 Padova, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy
| |
Collapse
|
5
|
Coenzyme Q at the Hinge of Health and Metabolic Diseases. Antioxidants (Basel) 2021; 10:antiox10111785. [PMID: 34829656 PMCID: PMC8615162 DOI: 10.3390/antiox10111785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022] Open
Abstract
Coenzyme Q is a unique lipidic molecule highly conserved in evolution and essential to maintaining aerobic metabolism. It is endogenously synthesized in all cells by a very complex pathway involving a group of nuclear genes that share high homology among species. This pathway is tightly regulated at transcription and translation, but also by environment and energy requirements. Here, we review how coenzyme Q reacts within mitochondria to promote ATP synthesis and also integrates a plethora of metabolic pathways and regulates mitochondrial oxidative stress. Coenzyme Q is also located in all cellular membranes and plasma lipoproteins in which it exerts antioxidant function, and its reaction with different extramitochondrial oxidoreductases contributes to regulate the cellular redox homeostasis and cytosolic oxidative stress, providing a key factor in controlling various apoptosis mechanisms. Coenzyme Q levels can be decreased in humans by defects in the biosynthesis pathway or by mitochondrial or cytosolic dysfunctions, leading to a highly heterogeneous group of mitochondrial diseases included in the coenzyme Q deficiency syndrome. We also review the importance of coenzyme Q levels and its reactions involved in aging and age-associated metabolic disorders, and how the strategy of its supplementation has had benefits for combating these diseases and for physical performance in aging.
Collapse
|
6
|
Phenolic compositions and antioxidant properties of leaves of eight persimmon varieties harvested in different periods. Food Chem 2019; 289:74-83. [PMID: 30955675 DOI: 10.1016/j.foodchem.2019.03.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/10/2019] [Accepted: 03/10/2019] [Indexed: 11/23/2022]
Abstract
The compositions and contents of antioxidant components and antioxidant attributes (scavenging DPPH radicals, TEAC, ferric reducing power and inhibiting Cu2+-induced human LDL oxidation) for the leaves of eight persimmon varieties harvested from Sep. to Nov. were determined. Harvest time and variety were important factors affecting the compositions and contents of phenolic compounds in persimmon leaves; moreover, phenolic contents (polyphenol, flavonoid, condensed tannin and phenolic acid) of the leaves were significantly correlated with their antioxidant activities. For each variety, the leaves harvested in months with higher temperature, solar radiation and sunshine duration had higher phenolic contents contributing to better antioxidant properties (ranking: Sep. > Oct. > Nov.). In addition, the compositions and contents of phenolic components and antioxidant capacities for the leaves from various persimmon varieties were also different. The leaves of persimmon varieties belonging to pollination constant and astringent (PCA) had higher phenolic contents and also presented better antioxidant effects.
Collapse
|
7
|
Hernández-Camacho JD, Bernier M, López-Lluch G, Navas P. Coenzyme Q 10 Supplementation in Aging and Disease. Front Physiol 2018; 9:44. [PMID: 29459830 PMCID: PMC5807419 DOI: 10.3389/fphys.2018.00044] [Citation(s) in RCA: 216] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 01/12/2018] [Indexed: 12/21/2022] Open
Abstract
Coenzyme Q (CoQ) is an essential component of the mitochondrial electron transport chain and an antioxidant in plasma membranes and lipoproteins. It is endogenously produced in all cells by a highly regulated pathway that involves a mitochondrial multiprotein complex. Defects in either the structural and/or regulatory components of CoQ complex or in non-CoQ biosynthetic mitochondrial proteins can result in a decrease in CoQ concentration and/or an increase in oxidative stress. Besides CoQ10 deficiency syndrome and aging, there are chronic diseases in which lower levels of CoQ10 are detected in tissues and organs providing the hypothesis that CoQ10 supplementation could alleviate aging symptoms and/or retard the onset of these diseases. Here, we review the current knowledge of CoQ10 biosynthesis and primary CoQ10 deficiency syndrome, and have collected published results from clinical trials based on CoQ10 supplementation. There is evidence that supplementation positively affects mitochondrial deficiency syndrome and the symptoms of aging based mainly on improvements in bioenergetics. Cardiovascular disease and inflammation are alleviated by the antioxidant effect of CoQ10. There is a need for further studies and clinical trials involving a greater number of participants undergoing longer treatments in order to assess the benefits of CoQ10 treatment in metabolic syndrome and diabetes, neurodegenerative disorders, kidney diseases, and human fertility.
Collapse
Affiliation(s)
- Juan D Hernández-Camacho
- Centro Andaluz de Biología del Desarrollo and CIBERER, Instituto de Salud Carlos III, Universidad Pablo de Olavide-CSIC-JA, Sevilla, Spain
| | - Michel Bernier
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, United States
| | - Guillermo López-Lluch
- Centro Andaluz de Biología del Desarrollo and CIBERER, Instituto de Salud Carlos III, Universidad Pablo de Olavide-CSIC-JA, Sevilla, Spain
| | - Plácido Navas
- Centro Andaluz de Biología del Desarrollo and CIBERER, Instituto de Salud Carlos III, Universidad Pablo de Olavide-CSIC-JA, Sevilla, Spain
| |
Collapse
|
8
|
Liu SC, Lin JT, Hu CC, Shen BY, Chen TY, Chang YL, Shih CH, Yang DJ. Phenolic compositions and antioxidant attributes of leaves and stems from three inbred varieties of Lycium chinense Miller harvested at various times. Food Chem 2017; 215:284-91. [DOI: 10.1016/j.foodchem.2016.06.072] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 06/20/2016] [Accepted: 06/21/2016] [Indexed: 10/21/2022]
|
9
|
Abstract
Orchid phytochemicals that have been studied include alkaloids, bibenzyls, phenanthrenes, stilbenoids, phenols, flavonoids, anthocyanins and polysaccharides. Many of these compounds exhibit antioxidant, anti-inflammatory, antimicrobial, antihelminthic, anticoagulant, antidiabetic and lipid-lowering properties. Some compounds are cytotoxic, prevent angiogenesis and tumour spread and promote programmed cell death of cancer cells. Some compounds protect nerve cells against chemicals and oxygen deprivation (stroke), promote nerve cell regeneration, protect the skin from ultraviolet damage, protect the liver against poisons such as carbon tetrachloride, prevent calcium loss from bone and enhance foetal lung maturation. This chapter provides a short account of the characteristics of the various groups of compounds, including their properties.
Collapse
|
10
|
Abstract
Adjuvant Nutritional Intervention in Cancer (ANICA) was a clinical study carried out in Denmark in the 1990s with 32 typical patients with breast cancer, aged 32-81 yr and classified high risk because of tumor spread to the lymph nodes. The patients received standard therapy for their breast cancer, but got from the start additionally an adjuvant therapy in form of a cocktail consisting of vitamin C (2,850 mg/day), vitamin E (2,500 IU/day), beta-carotene (32.5 IU/day), selenium (Se; 387 micrograms/day), various other vitamins and essential trace elements, essential fatty acids (1.2 g gamma-linolenic acid/day and 3.5 g omega-3 PUFAs/day), and coenzyme Q10 (CoQ10, 90 mg/day). The protocol was later changed, with reduction of the Se intake and more coenzyme Q10 than when the study was started. The average survival of high-risk breast patients in the study was 50% after 5 yr, whereas for low-risk breast cancer patients (without metastases in the axilla when treatment was started), the average survival was 90% after ten years. The main investigator died, and the final report from the ANICA study was therefore never written. However, the published preliminary results from the trial were very promising; it seems, therefore, important to follow-up this study.
Collapse
Affiliation(s)
- Geir Bjørklund
- a Council for Nutritional and Environmental Medicine , Mo i Rana , Norway
| |
Collapse
|
11
|
Bozkurt M, Oktayoglu P, Em S, Çaglayan M, Yuksel H, Uçar D, Batmaz İ, Sarıyıldız MA, Karatoprak S, Nas K. Serum Coenzyme Q10 Levels and Oxidative Status in Patients with Fibromyalgia Syndrome. ACTA ACUST UNITED AC 2014. [DOI: 10.3109/10582452.2014.883040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
12
|
Kinetic modeling of low density lipoprotein oxidation in arterial wall and its application in atherosclerotic lesions prediction. Chem Phys Lipids 2013; 175-176:1-8. [PMID: 23920081 DOI: 10.1016/j.chemphyslip.2013.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 07/24/2013] [Accepted: 07/25/2013] [Indexed: 12/14/2022]
Abstract
Oxidation of low-density lipoprotein (LDL) is one of the major factors in atherogenic process. Trapped oxidized LDL (Ox-LDL) in the subendothelial matrix is taken up by macrophage and leads to foam cell generation creating the first step in atherosclerosis development. Many researchers have studied LDL oxidation using in vitro cell-induced LDL oxidation model. The present study provides a kinetic model for LDL oxidation in intima layer that can be used in modeling of atherosclerotic lesions development. This is accomplished by considering lipid peroxidation kinetic in LDL through a system of elementary reactions. In comparison, characteristics of our proposed kinetic model are consistent with the results of previous experimental models from other researches. Furthermore, our proposed LDL oxidation model is added to the mass transfer equation in order to predict the LDL concentration distribution in intima layer which is usually difficult to measure experimentally. According to the results, LDL oxidation kinetic constant is an important parameter that affects LDL concentration in intima layer so that existence of antioxidants that is responsible for the reduction of initiating rates and prevention of radical formations, have increased the concentration of LDL in intima by reducing the LDL oxidation rate.
Collapse
|
13
|
Sohet FM, Delzenne NM. Is there a place for coenzyme Q in the management of metabolic disorders associated with obesity? Nutr Rev 2012; 70:631-41. [PMID: 23110642 DOI: 10.1111/j.1753-4887.2012.00526.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Coenzyme Q (CoQ), a lipophilic cofactor of the electron transport chain in the mitochondria, can be synthesized endogenously or provided by food. The aim of this review is to summarize the in vitro cell culture studies, the in vivo animal studies, and the human studies investigating the impact of CoQ supplementation on the occurrence of obesity and related disorders (diabetes, hypertension, lipemia, and atherosclerosis). The antioxidative properties of CoQ have been observed in different experimental models of atherosclerosis, obesity, and diabetes. The recent discovery of the anti-inflammatory effect of CoQ, mostly described in vitro, has generated increased interest in CoQ supplementation, but it needs to be confirmed in vivo in pathological situations. CoQ intervention studies in humans failed to show reproducible effects on body weight, fat mass, or glycemia, but CoQ supplementation does seem to have an antihypertensive effect. The molecular mechanism to explain this effect has only recently been discovered.
Collapse
Affiliation(s)
- Florence M Sohet
- Louvain Drug Research Institute, Metabolism and Nutrition Research Group, Université catholique de Louvain, Brussels, Belgium
| | | |
Collapse
|
14
|
Effects of Coenzyme Q10 on Arterial Stiffness, Metabolic Parameters, and Fatigue in Obese Subjects: A Double-Blind Randomized Controlled Study. J Med Food 2011; 14:386-90. [DOI: 10.1089/jmf.2010.1202] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
15
|
Agarwal A, Sekhon LH. The role of antioxidant therapy in the treatment of male infertility. HUM FERTIL 2011; 13:217-25. [PMID: 21117931 DOI: 10.3109/14647273.2010.532279] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Oxidative stress contributes to defective spermatogenesis leading to male factor infertility. The aim of this study was to review the current literature on the effects of various antioxidants to improve fertilisation and pregnancy rates. The sources of literature were Pubmed and the Cochrane data base. Reviewing the current literature revealed that Carnitines and vitamin C and E have been clearly shown to be effective by many well-conducted studies and may be considered as a first line treatment. The efficacy of antioxidants, such as glutathione, selenium and coenzyme Q10 has been demonstrated by few, but well-performed studies, and may be considered second line treatment. There is, however, a need for further investigation with randomised controlled studies to confirm the efficacy and safety of antioxidant supplementation in the medical treatment of idiopathic male infertility as well as the need to determine the ideal dose of each compound to improve semen parameters, fertilisation rates and pregnancy outcomes.
Collapse
Affiliation(s)
- Ashok Agarwal
- Center for Reproductive Medicine, Glickman Urological & Kidney Institute and Ob/Gyn & Women's Health Institute, Cleveland Clinic, Cleveland, Ohio, USA.
| | | |
Collapse
|
16
|
Datta U, Chandra Sekar M, Hembram ML, Dasgupta R. Development of a new method to preserve caprine cauda epididymal spermatozoa in-situ at -10 degrees C with electrolyte free medium. J Assist Reprod Genet 2009; 26:467-73. [PMID: 19760167 PMCID: PMC2767490 DOI: 10.1007/s10815-009-9344-4] [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: 06/29/2009] [Accepted: 08/31/2009] [Indexed: 10/20/2022] Open
Abstract
PURPOSE In-situ preservation of cauda epididymal spermatozoa at -10 degrees C with electrolyte free media for obtaining maximum functional gametes than preservation at 5 degrees C. METHODS Electrolyte free media prepared with soybean lecithin-glycerol, Coenzyme Q10 - glycerol and soybean lecithin - Coenzyme Q10- glycerol were inoculated separately into ligated cauda epididymides, equilibrated 2 h at 5 degrees C, wrapped with aluminium foil and freezed at - 10 degrees C. Spermatozoan characters were evaluated 7 and 21 days after thawing at 38.5 degrees C in a water bath for 5 min. RESULTS Spermatozoan characteristics were diminished gradually and significantly (p < 0.001, p < 0.05) between the media and observation days. Soybean lecithin-CoenzymeQ10-glycerol effectively protected spermatozoa against cold shock where spermatozoan progressive motility, viability, hypo-osmotic swelling positivity were 30.2 +/- 0.62; 45.2 +/- 0.82 and 41.6 +/- 0.79 percent respectively on day 21. CONCLUSION This method can be adopted in field conditions for transportation of frozen epididymides and re-utilization of maximum functional gametes to conserve valuable animals after postmortem / slaughter.
Collapse
Affiliation(s)
- Uttam Datta
- Department of Veterinary Gynaecology & Obstetrics, Faculty of Veterinary and Animal Sciences West Bengal University of ANIMAL and Fishery Sciences, 37and 68, Kshudiram Bose Sarani, Belgachia, Kolkata, 700037 West Bengal India
| | - M. Chandra Sekar
- Department of Veterinary Gynaecology & Obstetrics, Faculty of Veterinary and Animal Sciences West Bengal University of ANIMAL and Fishery Sciences, 37and 68, Kshudiram Bose Sarani, Belgachia, Kolkata, 700037 West Bengal India
| | - Manik Lal Hembram
- Department of Veterinary Gynaecology & Obstetrics, Faculty of Veterinary and Animal Sciences West Bengal University of ANIMAL and Fishery Sciences, 37and 68, Kshudiram Bose Sarani, Belgachia, Kolkata, 700037 West Bengal India
| | - Raju Dasgupta
- Department of Animal Genetics and Breeding, Faculty of Veterinary and Animal Sciences West Bengal University of ANIMAL and Fishery Sciences, 37and 68, Kshudiram Bose Sarani, Belgachia, Kolkata, 700037 West Bengal India
| |
Collapse
|
17
|
Evans M, Baisley J, Barss S, Guthrie N. A randomized, double-blind trial on the bioavailability of two CoQ10 formulations. J Funct Foods 2009. [DOI: 10.1016/j.jff.2008.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
18
|
Ruiz-Jiménez J, Priego-Capote F, Mata-Granados J, Quesada J, Luque de Castro M. Determination of the ubiquinol-10 and ubiquinone-10 (coenzyme Q10) in human serum by liquid chromatography tandem mass spectrometry to evaluate the oxidative stress. J Chromatogr A 2007; 1175:242-8. [DOI: 10.1016/j.chroma.2007.10.055] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Revised: 10/15/2007] [Accepted: 10/19/2007] [Indexed: 11/26/2022]
|
19
|
Hargreaves IP. Coenzyme Q10 in phenylketonuria and mevalonic aciduria. Mitochondrion 2007; 7 Suppl:S175-80. [PMID: 17442628 DOI: 10.1016/j.mito.2007.02.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2006] [Revised: 02/01/2007] [Accepted: 02/18/2007] [Indexed: 10/23/2022]
Abstract
Mevalonic aciduria (MVA) and phenylketonuria (PKU) are inborn errors of metabolism caused by deficiencies in the enzymes mevalonate kinase and phenylalanine 4-hydroxylase, respectively. Despite numerous studies the factors responsible for the pathogenicity of these disorders remain to be fully characterised. In common with MVA, a deficit in coenzyme Q10 (CoQ10) concentration has been implicated in the pathophysiology of PKU. In MVA the decrease in CoQ10 concentration may be attributed to a deficiency in mevalonate kinase, an enzyme common to both CoQ10 and cholesterol synthesis. However, although dietary sources of cholesterol cannot be excluded, the low/normal cholesterol levels in MVA patients suggests that some other factor may also be contributing to the decrease in CoQ10.The main factor associated with the low CoQ10 level of PKU patients is purported to be the elevated phenylalanine level. Phenylalanine has been shown to inhibit the activities of both 3-hydroxy-3-methylglutaryl-CoA reductase and mevalonate-5-pyrophosphate decarboxylase, enzymes common to both cholesterol and CoQ10 biosynthesis. Although evidence of a lowered plasma/serum CoQ10 level has been reported in MVA and PKU, few studies have assessed the intracellular CoQ10 concentration of patients. Plasma/serum CoQ10 is influenced by dietary intake as well as its lipoprotein content and therefore may be limited as a means of assessing intracellular CoQ10 concentration. Whether the pathogenesis of MVA and PKU are related to a loss of CoQ10 has yet to be established and further studies are required to assess the intracellular CoQ10 concentration of patients before this relationship can be confirmed or refuted.
Collapse
Affiliation(s)
- Iain P Hargreaves
- Neurometabolic Unit, National Hospital for Neurology and Neurosurgery, Queen Square, London, UK.
| |
Collapse
|
20
|
Chapple ILC, Matthews JB. The role of reactive oxygen and antioxidant species in periodontal tissue destruction. Periodontol 2000 2007; 43:160-232. [PMID: 17214840 DOI: 10.1111/j.1600-0757.2006.00178.x] [Citation(s) in RCA: 524] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Iain L C Chapple
- Unit of Periodontology, The University of Birmingham School of Dentistry, Birmingham, UK
| | | |
Collapse
|
21
|
Passi S, Cataudella S, Tiano L, Littarru GP. Dynamics of lipid oxidation and antioxidant depletion in Mediterranean fish stored at different temperatures. Biofactors 2005; 25:241-54. [PMID: 16873953 DOI: 10.1002/biof.5520250130] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Numerous changes occur post-mortem in fish, affecting its chemical composition and nutritional quality. In the present paper we describe the effect of storage on ice or at -30 degrees C or -80 degrees C on 10 species of Mediterranean fish. Water and lipid soluble antioxidants, lipid pattern and products of oxidative attack on lipids, proteins and DNA were quantified for 7 consecutive days on homogenates of fish light muscle. The earliest events were oxidation of ubiquinol and vitamin C, which disappeared almost completely within 48 hours. Ubiquinol oxidation gave rise to an initial increase of ubiquinone, which peaked at the second day: thereafter ubiquinone itslef decreased, more rapidly and to a greater extent than vitamin E. The decrease in antioxidants was accompanied by significant oxidative damage to lipids, proteins and DNA. TBARS significantly increased beginning from the third day of storage in all species and were linked to a significant reduction in the n-3 PUFA of triglycerides (TG) and phospholipid fractions (PL). A remarkable elevation of protein carbonyls and 8OHdG occurred approximately 24 hours later than PUFA oxidation. For SOD, GPX and GSH significant depletions occurred for all species only at 6th or 7th day, but the final values were always higher than 50% compared to the initial ones. Deep-freezing of the same species at -30 degrees C and -80 degrees C for up to 12 months did not significantly affect the levels of enzymatic antioxidants, the redox couple GSH/GS-SG, n-3 and n-6 PUFA of TG and PL fractions of the light muscle. The only antioxidants, which at -30 degrees C and -80 degrees C appeared to be degraded after 6 and 12 months were ubiquinol and vitamin C. As expected their degradation was higher at -30 degrees C than at -80 degrees C. In fact the average decrease for ubiquinol at -80 degrees C was 42% at 6 and 12 months respectively, whereas at -30 degrees C the decrease was 61% and 87% For vitamin C the average decrease at -80 degrees C was 36% and 67% at 6 and 12 months respectively, and at -30 degrees C it was 61% and 82%. Vitamin E was considerably more stable than ubiquinol and vitamin C. The relative stability of the antioxidants, with the exceptions of ubiquionols, vitamin C and, to a certain extent, vitamin E, was accompanied by a very limited increase in oxidation products. In addition no significant hydrolysis of TG and PL fractions were observed throughout the storage time. The dynamics of lipid, protein and DNA oxidation is discussed in the light of depletion of the various antioxidant systems.
Collapse
Affiliation(s)
- S Passi
- Centre of Cellular Ageing, IDI-IRCCS, Rome
| | | | | | | |
Collapse
|
22
|
Krilov D, Stojanović N, Herak JN. Probabilistic kinetic model of slow oxidation of low-density lipoprotein: II. Experiments. Chem Phys Lipids 2004; 129:75-84. [PMID: 14998729 DOI: 10.1016/j.chemphyslip.2003.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2003] [Revised: 12/02/2003] [Accepted: 12/08/2003] [Indexed: 10/26/2022]
Abstract
Theoretical probabilistic kinetic model has been applied to describe the measurements of several oxidation markers as a function of time, during slow oxidation of low-density lipoprotein (LDL). It has been demonstrated that such a process could be described as tocopherol-mediated peroxidation (TMP), initiated and sustained by the action of copper ions, present in LDL in trace amounts. In that process concentration of alpha-tocopherol remains essentially unaltered. Tocopherol and copper ions act as catalysts, oscillating between the oxidized and reduced states. The fitting of the theoretical model to the experimental data resulted in determination of the numerical values for the kinetic parameters. It has been found that the parameter values used for the fitting of the data collected for a number of samples from various donors differ rather little. The kinetic chain length of 1.3 (in presence of co-antioxidants) and 2.9 (in the absence of co-antioxidants) is shorter than found by others. The difference probably comes from the much lower concentration of copper ions in our systems (about 0.1 ion per LDL particle).
Collapse
Affiliation(s)
- Dubravka Krilov
- Medical School, University of Zagreb, Salata 3b, 10000 Zagreb, Croatia
| | | | | |
Collapse
|
23
|
Herak JN, Stojanović N, Krilov D. Probabilistic kinetic model of slow oxidation of low-density lipoprotein: I. Theory. Chem Phys Lipids 2004; 129:63-74. [PMID: 14998728 DOI: 10.1016/j.chemphyslip.2003.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2003] [Revised: 12/02/2003] [Accepted: 12/08/2003] [Indexed: 11/16/2022]
Abstract
The microscopic probabilistic model has been introduced to explain the kinetics of very slow oxidation of low-density lipoprotein (LDL) from human plasma. The LDL oxidation, carried out in very unfavorable conditions, is assumed to be initiated by the traces of the transition-metal ions associated with the lipoprotein. The substrates for the metal-ion attack are alpha-tocopherol and the pre-formed lipid hydroperoxide. The theory assumes oscillation of the metal ions and alpha-tocopherol from the oxidized to the reduced states. In this model alpha-tocopherol acts as a pro-oxidant. The entire oxidation process consists of rare bursts of events in individual LDL particles. The reactions within the particles are treated in terms of probabilities of individual active species to participate in a specified reaction. The circular flow of the radical reactions could be visualized as circular flow of microscopic probabilities. The empirical, macroscopic quantities are quantitatively related with the microscopic probabilities, determined by a set of five adjustable parameters. The differential equations describing the initial radical generation rate and the rates of change of concentration of oxygen, hydroperoxide, co-antioxidant and trapped radicals in an LDL system are numerically solved in a finite difference approach.
Collapse
Affiliation(s)
- Janko N Herak
- Division of Biophysics, Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovacića 1, P.O. Box 156, Zagreb 10000, Croatia.
| | | | | |
Collapse
|
24
|
Colomé C, Artuch R, Vilaseca MA, Sierra C, Brandi N, Lambruschini N, Cambra FJ, Campistol J. Lipophilic antioxidants in patients with phenylketonuria. Am J Clin Nutr 2003; 77:185-8. [PMID: 12499340 DOI: 10.1093/ajcn/77.1.185] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Low serum ubiquinone-10 concentrations have been described in phenylketonuric patients fed natural-protein-restricted diets. Such low concentrations may be related to increased free radical damage. OBJECTIVE We evaluated the relation between low serum ubiquinone-10 concentrations and other lipophilic antioxidants (tocopherol and retinol), selenium, glutathione peroxidase activity, and malondialdehyde concentrations as a marker of lipid peroxidation. DESIGN This was a cross-sectional study of 58 patients with phenylketonuria (aged 2-36 y; median: 13 y) under dietary treatment, 58 age-matched control subjects, and 30 children with moderate hyperphenylalaninemia fed unrestricted diets (aged 3-17 y; median: 7.5 y). Serum ubiquinone-10 concentrations were analyzed by HPLC with electrochemical detection. Serum retinol, serum tocopherol, and plasma malondialdehyde were analyzed by HPLC with ultraviolet detection. RESULTS A significant positive correlation was observed between ubiquinone-10 and tocopherol (r = 0.510, P < 0.001) in the patients with phenylketonuria. After the patients were stratified into 2 groups according to ubiquinone-10 values, significantly lower concentrations of tocopherol were observed in group 1 (low ubiquinone values) than in group 2 (normal ubiquinone values), the hyperphenylalaninemic children, and the control group. Plasma malondialdehyde concentrations were significantly higher in group 1 than in the other groups. No significant differences between groups 1 and 2 were observed in daily intakes of selenium, ascorbate, tocopherol, or retinol. CONCLUSIONS Plasma lipid peroxidation seems to be increased in phenylketonuria. Low concentrations of ubiquinone-10 could be associated with either excessive tocopherol consumption or high malondialdehyde concentrations in patients with phenylketonuria.
Collapse
Affiliation(s)
- Catrina Colomé
- Serveis de Bioquímica, Hospital Sant Joan de Déu, Universitat de Barcelona, Spain
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Noguchi N. Novel insights into the molecular mechanisms of the antiatherosclerotic properties of antioxidants: the alternatives to radical scavenging. Free Radic Biol Med 2002; 33:1480-9. [PMID: 12446205 DOI: 10.1016/s0891-5849(02)01114-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Since the oxidation hypothesis of atherogenesis was first proposed, mechanisms of low density lipoprotein (LDL) oxidation and the biological properties of oxidized LDL have been investigated in depth. The major mechanism for the antiatherogenic effects of antioxidants, especially radical scavenging antioxidants, has been thought to be direct inhibition of LDL oxidation. The recently developed genomic technology has allowed this hypothesis to be addressed more rigorously than relying on the simple chemical properties of these therapeutic agents. Oxidized LDL, which is known to be proatherogenic, induces many categories of genes that have a potential involvement in the development of atherosclerotic lesions. The genes involved in cell growth, survival, adhesion, and inflammatory responses were upregulated through some nuclear receptor-depending pathways in cells exposed to stimulants such as shear stress, TNF-alpha, and oxidized LDL. On the other hand, these transcriptome analyses have shown a novel mechanism underlying phenolic antioxidants contribute to antiatherogenicity by regulating the expression of genes involved in protein degradation and transcriptional pathways. These studies reveal the often-suspected complexity of the atherogenic process and have the potential for novel therapeutic intervention.
Collapse
Affiliation(s)
- Noriko Noguchi
- Department of System Biology and Medicine, Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan.
| |
Collapse
|
26
|
Neuzil J, Weber C, Kontush A. The role of vitamin E in atherogenesis: linking the chemical, biological and clinical aspects of the disease. Atherosclerosis 2001; 157:257-83. [PMID: 11472726 DOI: 10.1016/s0021-9150(00)00741-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Atherosclerosis is a disease involving both oxidative modifications and disbalance of the immune system. Vitamin E, an endogenous redox-active component of circulating lipoproteins and (sub)cellular membranes whose levels can be manipulated by supplementation, has been shown to play a role in the initiation and progression of the disease. Recent data reveal that the activities of vitamin E go beyond its redox function. Moreover, it has been shown that vitamin E can exacerbate certain processes associated with atherogenesis. In this essay we review the role of biology of atherosclerosis, and suggest that these two facets decide the clinical manifestation and outcome of the disease.
Collapse
Affiliation(s)
- J Neuzil
- Institute for Prevention of Cardiovascular Diseases, Ludwig-Maximilians-University, Pettenkoferstr. 9, 80336 Munich, Germany.
| | | | | |
Collapse
|
27
|
Djahansouzi S, Braesen JH, Koenig K, Beisiegel U, Kontush A. The effect of pharmacological doses of different antioxidants on oxidation parameters and atherogenesis in hyperlipidaemic rabbits. Atherosclerosis 2001; 154:387-98. [PMID: 11166771 DOI: 10.1016/s0021-9150(00)00510-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidation hypothesis of atherosclerosis implies that antioxidants are able to inhibit lipoprotein oxidation in the arterial wall and thereby retard atherogenesis. Since most of the animal studies performed have used very high doses of antioxidants, it is to date unknown whether antioxidants are effective antiatherosclerotic agents when given in pharmacological doses. Here we addressed this question using homozygous Watanabe heritable hyperlipidaemic (WHHL) rabbits as an animal model of atherosclerosis. The rabbits were divided into four groups, each consisting of ten animals. They received either a standard diet or a diet containing 4.3 mg ubiquinone-10, or 4.3 mg vitamin E or 15 mg probucol/kg body weight daily. After 12 months, the extent of aortic atherosclerosis was assessed as the intima thickness, media thickness and intima-to-media ratio in 14 cross sections equally distributed over the whole aorta. To evaluate the antioxidant effects of the diet, lipophilic and hydrophilic antioxidants, lipids, fatty acids and plasma oxidizability were measured after 0, 3 and 6 months of feeding. We found that supplementation with probucol significantly decreased aortic intima-to-media ratio compared to controls. The antiatherosclerotic action of probucol was accompanied by its beneficial action on plasma oxidizability and some plasma antioxidants. No decrease in aortic atherosclerosis was measured in ubiquinone-10- and vitamin E-supplemented rabbits, despite the fact that both antioxidants decreased plasma oxidizability and ubiquinone-10 increased the plasma levels of antioxidants. Taken together, these data suggest that pharmacological doses of probucol retard atherogenesis in WHHL rabbits by an antioxidant mechanism, while ubiquinone-10 and vitamin E at these dosages are ineffective in this highly hyperlipidaemic model. The measurement of some oxidation-related parameters in plasma, such as lipophilic antioxidants, polyunsaturated fatty acids and lipoprotein oxidizability, may be useful in assessing the risk of atherogenesis in humans.
Collapse
Affiliation(s)
- S Djahansouzi
- Biochemisches Labor, Pav. 39, Medizinische Kern- und Poliklinik, Universitätskrankenhaus Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | | | | | | | | |
Collapse
|
28
|
Dreosti IE. Recommended dietary intake levels for phytochemicals: Feasible or fanciful? Asia Pac J Clin Nutr 2000; 9 Suppl 1:S119-22. [DOI: 10.1046/j.1440-6047.2000.00167.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
29
|
Abstract
This report summarizes new evidence for a plasma-membrane-associated hydroquinone oxidase designated as CNOX (constitutive plasma membrane NADH oxidase) that functions as a terminal oxidase for a plasma membrane oxidoreductase (PMOR) electron transport chain to link the accumulation of lesions in mitochondrial DNA to cell-surface accumulations of reactive oxygen species. Previous considerations of plasma membrane redox changes during aging have lacked evidence for a specific terminal oxidase to catalyze a flow of electrons from cytosolic NADH to molecular oxygen (or to protein disulfides). Cells with functionally deficient mitochondria become characterized by an anaerobic metabolism. As a result, NADH accumulates from the glycolytic production of ATP. Elevated PMOR activity has been shown to be necessary to maintain the NAD(+)/NADH homeostasis essential for survival. Our findings demonstrate that the hyperactivity of the PMOR system results in an NADH oxidase (NOX) activity capable of generating reactive oxygen species at the cell surface. This would serve to propagate the aging cascade both to adjacent cells and to circulating blood components. The generation of superoxide by NOX forms associated with aging is inhibited by coenzyme Q and provides a rational basis for the anti-aging activity of circulating coenzyme Q.
Collapse
Affiliation(s)
- D M Morré
- Department of Foods and Nutrition, Purdue University, West Lafayette, IN 47907, USA.
| | | | | |
Collapse
|
30
|
Lippa S, Colacicco L, Bondanini F, Callà C, Gozzo ML, Ciccariello M, Angelitti AG. Plasma levels of coenzyme Q(10), vitamin E and lipids in uremic patients on conservative therapy and hemodialysis treatment: some possible biochemical and clinical implications. Clin Chim Acta 2000; 292:81-91. [PMID: 10686278 DOI: 10.1016/s0009-8981(99)00204-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Coenzyme Q(10) (CoQ(10)), vitamin E, total cholesterol, HDL-cholesterol (HDLC) and triglycerides were measured in the plasma of 62 patients with kidney failure, 46 under hemodialysis treatment and 16 under conservative therapy, and 95 controls. The sum of LDL-cholesterol (LDL-C) and VLDL-cholesterol (VLDL-C) was also calculated for each patient. The ratio CoQ(10)/LDL-C+VLDL-C in both conservative therapy and hemodialysis populations was significantly lower (P<0.001) compared with normal controls and remained unchanged after the dialysis treatment. On the contrary the ratio vitamin E/LDL-C+VLDL-C was normal but decreased significantly (P<0.02) after each dialysis. Since coenzyme Q is the main inhibitor of the prooxidant action of vitamin E, it was hypothesized that its decrease in both the populations examined could make the lipoproteins of these patients more vulnerable to a peroxidative attack.
Collapse
Affiliation(s)
- S Lippa
- Istituto di Chimica e Chimica Clinica, Università Cattolica del S. Cuore, Rome, Italy
| | | | | | | | | | | | | |
Collapse
|
31
|
Rousseau G, Véronneau M, DesRosiers C, Varin F. Effects of lovastatin and pravastatin on ubiquinone and 4-hydroxynonenal tissue levels in the hypercholesterolemic hamster. Curr Ther Res Clin Exp 2000. [DOI: 10.1016/s0011-393x(00)88484-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
|
32
|
Battino M, Bullon P, Wilson M, Newman H. Oxidative injury and inflammatory periodontal diseases: the challenge of anti-oxidants to free radicals and reactive oxygen species. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 2000; 10:458-76. [PMID: 10634583 DOI: 10.1177/10454411990100040301] [Citation(s) in RCA: 185] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In recent years, there has been a tremendous expansion in medical and dental research concerned with free radicals, reactive oxygen species, and anti-oxidant defense mechanisms. This review is intended to provide a critical, up-to-date summary of the field, with particular emphasis on its implications for the application of "anti-oxidant therapy" in periodontal disease. We have reviewed the nomenclature, mechanisms of actions, features, and sources of most common free radicals and reactive oxygen species, as well as analyzed the typical biological targets for oxidative damage. Based on a review of direct and indirect anti-oxidant host defenses, particularly in relation to the key role of polymorphonuclear neutrophils in periodontitis, we review current evidence for oxidative damage in chronic inflammatory periodontal disease, and the possible therapeutic effects of anti-oxidants in treating and/or preventing such pathology, with special attention to vitamin E and Co-enzyme Q.
Collapse
Affiliation(s)
- M Battino
- Institute of Biochemistry, Faculty of Medicine, University of Ancona, Italy
| | | | | | | |
Collapse
|
33
|
Vinson JA, Jang J, Yang J, Dabbagh Y, Liang X, Serry M, Proch J, Cai S. Vitamins and especially flavonoids in common beverages are powerful in vitro antioxidants which enrich lower density lipoproteins and increase their oxidative resistance after ex vivo spiking in human plasma. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 1999; 47:2502-2504. [PMID: 10552516 DOI: 10.1021/jf9902393] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- J A Vinson
- Department of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510-4626, USA
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Wang Q, Lee BL, Ong CN. Automated high-performance liquid chromatographic method with precolumn reduction for the determination of ubiquinol and ubiquinone in human plasma. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1999; 726:297-302. [PMID: 10348199 DOI: 10.1016/s0378-4347(99)00067-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We developed a gradient HPLC method with automated precolumn reduction for direct electrochemical detection of ubiquinol-10 (CoQ10H2) and total coenzyme Q10 (TQ10) in human plasma. The concentration of ubiquinone-10 (CoQ10) was calculated by subtraction of CoQ10H2 from TQ10. Preparation of reducing agent and precolumn reduction was performed by a programmable auto-injector. The two mobile phases used were: A, 100% of methanol containing 50 mM sodium perchlorate and 10 mM perchloric acid; and B, a mixture of ethanol and tert.-butanol (80:20, v/v). Sample preparation was simply a deproteinisation process with 10-fold ethanol. A good linear relationship was obtained for CoQ10H2 concentration from 0.1 to 3 micromol/l. The detection limit was 2.5 nmol/l with an injection volume of 20 microl. The analytical recovery and reproduciblity were generally >90%. To validate the method, 18 freshly collected plasma samples of normal healthy subjects were analysed. The mean ratio of CoQ10H2/CoQ10 was 93:7. The proposed method is sensitive, reliable and can be used for clinical investigation.
Collapse
Affiliation(s)
- Q Wang
- School of Public Health, Beijing Medical University, People's Republic of China
| | | | | |
Collapse
|
35
|
Abstract
The clinical experience in cardiology with CoQ10 includes studies on congestive heart failure, ischemic heart disease, hypertensive heart disease, diastolic dysfunction of the left ventricle, and reperfusion injury as it relates to coronary artery bypass graft surgery. The CoQ10-lowering effect of HMG-CoA reductase inhibitors and the potential adverse consequences are of growing concern. Supplemental CoQ10 alters the natural history of cardiovascular illnesses and has the potential for prevention of cardiovascular disease through the inhibition of LDL cholesterol oxidation and by the maintenance of optimal cellular and mitochondrial function throughout the ravages of time and internal and external stresses. The attainment of higher blood levels of CoQ10 (> 3.5 micrograms/ml) with the use of higher doses of CoQ10 appears to enhance both the magnitude and rate of clinical improvement. In this communication, 34 controlled trials and several open-label and long-term studies on the clinical effects of CoQ10 in cardiovascular diseases are reviewed.
Collapse
|
36
|
Langsjoen PH, Langsjoen AM. Coenzyme Q10 in cardiovascular disease with emphasis on heart failure and myocardial ischaemia. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s1328-0163(98)90022-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|