1
|
Hedlich-Dwyer J, Allard JS, Mulgrave VE, Kisby GE, Raber J, Gassman NR. Novel Techniques for Mapping DNA Damage and Repair in the Brain. Int J Mol Sci 2024; 25:7021. [PMID: 39000135 PMCID: PMC11241736 DOI: 10.3390/ijms25137021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/22/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
DNA damage in the brain is influenced by endogenous processes and metabolism along with exogenous exposures. Accumulation of DNA damage in the brain can contribute to various neurological disorders, including neurodegenerative diseases and neuropsychiatric disorders. Traditional methods for assessing DNA damage in the brain, such as immunohistochemistry and mass spectrometry, have provided valuable insights but are limited by their inability to map specific DNA adducts and regional distributions within the brain or genome. Recent advancements in DNA damage detection methods offer new opportunities to address these limitations and further our understanding of DNA damage and repair in the brain. Here, we review emerging techniques offering more precise and sensitive ways to detect and quantify DNA lesions in the brain or neural cells. We highlight the advancements and applications of these techniques and discuss their potential for determining the role of DNA damage in neurological disease.
Collapse
Affiliation(s)
- Jenna Hedlich-Dwyer
- Department of Pharmacology and Toxicology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Joanne S Allard
- Department of Physiology & Biophysics, Howard University College of Medicine, Washington, DC 20059, USA
| | - Veronica E Mulgrave
- Department of Physiology & Biophysics, Howard University College of Medicine, Washington, DC 20059, USA
| | - Glen E Kisby
- Department of Biomedical Sciences, College of Osteopathic Medicine, Western University of Health Sciences, Lebanon, OR 97355, USA
| | - Jacob Raber
- Department of Behavioral Neuroscience, Neurology, and Radiation Medicine, Division of Neuroscience, ONPRC, Oregon Health & Science University, Portland, OR 97239, USA
| | - Natalie R Gassman
- Department of Pharmacology and Toxicology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
| |
Collapse
|
2
|
Eysert F, Kinoshita PF, Lagarde J, Lacas-Gervais S, Xicota L, Dorothée G, Bottlaender M, Checler F, Potier MC, Sarazin M, Chami M. Mitochondrial alterations in fibroblasts from sporadic Alzheimer's disease (AD) patients correlate with AD-related clinical hallmarks. Acta Neuropathol Commun 2024; 12:90. [PMID: 38851733 PMCID: PMC11161956 DOI: 10.1186/s40478-024-01807-x] [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: 05/23/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024] Open
Abstract
Mitochondrial dysfunctions are key features of Alzheimer's disease (AD). The occurrence of these disturbances in the peripheral cells of AD patients and their potential correlation with disease progression are underinvestigated. We studied mitochondrial structure, function and mitophagy in fibroblasts from healthy volunteers and AD patients at the prodromal (AD-MCI) or demented (AD-D) stages. We carried out correlation studies with clinical cognitive scores, namely, (i) Mini-Mental State Examination (MMSE) and (ii) Dementia Rating-Scale Sum of Boxes (CDR-SOB), and with (iii) amyloid beta (Aβ) plaque burden (PiB-PET imaging) and (iv) the accumulation of peripheral amyloid precursor protein C-terminal fragments (APP-CTFs). We revealed alterations in mitochondrial structure as well as specific mitochondrial dysfunction signatures in AD-MCI and AD-D fibroblasts and revealed that defective mitophagy and autophagy are linked to impaired lysosomal activity in AD-D fibroblasts. We reported significant correlations of a subset of these dysfunctions with cognitive decline, AD-related clinical hallmarks and peripheral APP-CTFs accumulation. This study emphasizes the potential use of peripheral cells for investigating AD pathophysiology.
Collapse
Affiliation(s)
- Fanny Eysert
- INSERM, CNRS, Institute of Molecular and Cellular Pharmacology, Laboratory of Excellence DistALZ, Université Côte d'Azur, 660 Route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
| | - Paula-Fernanda Kinoshita
- INSERM, CNRS, Institute of Molecular and Cellular Pharmacology, Laboratory of Excellence DistALZ, Université Côte d'Azur, 660 Route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
| | - Julien Lagarde
- Department of Neurology of Memory and Language, GHU Paris Psychiatrie & Neurosciences, Hôpital Sainte Anne, 75014, Paris, France
- Université Paris-Cité, 75006, Paris, France
- BioMaps, Service Hospitalier Frédéric Joliot CEA, CNRS, Inserm, Université Paris-Saclay, 91401, Orsay, France
| | - Sandra Lacas-Gervais
- Centre Commun de Microscopie Appliquée, Université de Nice Côte d'Azur, 06108, Nice, France
| | - Laura Xicota
- UPMC University Paris 06, UMRS 1127, Sorbonne Universités, Paris, France
- ICM Research Center, CNRS UMR 7225, Paris, France
| | - Guillaume Dorothée
- Inserm, Centre de Recherche Saint-Antoine, CRSA, Immune System and Neuroinflammation Laboratory, Hôpital Saint-Antoine, Sorbonne Université, 75012, Paris, France
| | - Michel Bottlaender
- BioMaps, Service Hospitalier Frédéric Joliot CEA, CNRS, Inserm, Université Paris-Saclay, 91401, Orsay, France
- UNIACT, Neurospin, Joliot Institute, CEA, Université Paris-Saclay, 91140, Gif sur Yvette, France
| | - Frédéric Checler
- INSERM, CNRS, Institute of Molecular and Cellular Pharmacology, Laboratory of Excellence DistALZ, Université Côte d'Azur, 660 Route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
| | - Marie-Claude Potier
- UPMC University Paris 06, UMRS 1127, Sorbonne Universités, Paris, France
- ICM Research Center, CNRS UMR 7225, Paris, France
| | - Marie Sarazin
- Department of Neurology of Memory and Language, GHU Paris Psychiatrie & Neurosciences, Hôpital Sainte Anne, 75014, Paris, France
- Université Paris-Cité, 75006, Paris, France
- BioMaps, Service Hospitalier Frédéric Joliot CEA, CNRS, Inserm, Université Paris-Saclay, 91401, Orsay, France
| | - Mounia Chami
- INSERM, CNRS, Institute of Molecular and Cellular Pharmacology, Laboratory of Excellence DistALZ, Université Côte d'Azur, 660 Route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France.
| |
Collapse
|
3
|
Cerantonio A, Citrigno L, Greco BM, De Benedittis S, Passarino G, Maletta R, Qualtieri A, Montesanto A, Spadafora P, Cavalcanti F. The Role of Mitochondrial Copy Number in Neurodegenerative Diseases: Present Insights and Future Directions. Int J Mol Sci 2024; 25:6062. [PMID: 38892250 PMCID: PMC11172615 DOI: 10.3390/ijms25116062] [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: 04/30/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Neurodegenerative diseases are progressive disorders that affect the central nervous system (CNS) and represent the major cause of premature death in the elderly. One of the possible determinants of neurodegeneration is the change in mitochondrial function and content. Altered levels of mitochondrial DNA copy number (mtDNA-CN) in biological fluids have been reported during both the early stages and progression of the diseases. In patients affected by neurodegenerative diseases, changes in mtDNA-CN levels appear to correlate with mitochondrial dysfunction, cognitive decline, disease progression, and ultimately therapeutic interventions. In this review, we report the main results published up to April 2024, regarding the evaluation of mtDNA-CN levels in blood samples from patients affected by Alzheimer's (AD), Parkinson's (PD), and Huntington's diseases (HD), amyotrophic lateral sclerosis (ALS), and multiple sclerosis (MS). The aim is to show a probable link between mtDNA-CN changes and neurodegenerative disorders. Understanding the causes underlying this association could provide useful information on the molecular mechanisms involved in neurodegeneration and offer the development of new diagnostic approaches and therapeutic interventions.
Collapse
Affiliation(s)
- Annamaria Cerantonio
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| | - Luigi Citrigno
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| | - Beatrice Maria Greco
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, CS, Italy
| | - Selene De Benedittis
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| | - Giuseppe Passarino
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, CS, Italy
| | - Raffaele Maletta
- Regional Neurogenetic Centre (CRN), Department of Primary Care, ASP Catanzaro, 88046 Lamezia Terme, CZ, Italy
- Association for Neurogenetic Research (ARN), 88046 Lamezia Terme, CZ, Italy
| | - Antonio Qualtieri
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| | - Alberto Montesanto
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, CS, Italy
| | - Patrizia Spadafora
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| | - Francesca Cavalcanti
- Institute for Biomedical Research and Innovation, National Research Council (IRIB-CNR), 87050 Mangone, CS, Italy; (A.C.); (P.S.)
| |
Collapse
|
4
|
Liabeuf G, Saguez R, Márquez C, Angel B, Bravo-Sagua R, Albala C. Decreased mitochondrial respiration associates with frailty in community-dwelling older adults. Front Cell Dev Biol 2024; 12:1301433. [PMID: 38778912 PMCID: PMC11110568 DOI: 10.3389/fcell.2024.1301433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 04/08/2024] [Indexed: 05/25/2024] Open
Abstract
Aging population has led to an increased prevalence of chronic and degenerative pathologies. A manifestation of unhealthy aging is frailty, a geriatric syndrome that implies a non-specific state of greater vulnerability. Currently, methods for frailty diagnosis are based exclusively on clinical observation. The aim of this study is to determine whether the bioenergetic capacity defined as mitochondrial oxygen consumption rate (OCR) of peripheral circulation mononuclear cells (PBMC) associates with the frailty phenotype in older adults and with their nutritional status. This is a cross-sectional analytic study of 58 participants 70 years and older, 18 frail and 40 non-frail adults, from the ALEXANDROS cohort study, previously described. Participants were characterized through sociodemographic and anthropometric assessments. Frail individuals displayed a higher frequency of osteoporosis and depression. The mean age of the participants was 80.2 ± 5.2 years, similar in both groups of men and women. Regarding the nutritional status defined as the body mass index, most non-frail individuals were normal or overweight, while frail participants were mostly overweight or obese. We observed that OCR was significantly decreased in frail men (p < 0.01). Age was also associated with significant differences in oxygen consumption in frail patients, with lower oxygen consumption being observed in those over 80 years of age. Therefore, the use of PBMC can result in an accessible fingerprint that may identify initial stages of frailty in a minimally invasive way.
Collapse
Affiliation(s)
- Gianella Liabeuf
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Escuela de Nutrición y Dietética, Facultad de Salud y Ciencias Sociales, Universidad de las Américas, Santiago, Chile
- Escuela de Nutrición y Dietética, Facultad de Ciencias de la Salud, Universidad Bernardo O’Higgins, Santiago, Chile
| | - Rodrigo Saguez
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Carlos Márquez
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
| | - Bárbara Angel
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Centro Interuniversitario de Envejecimiento Saludable RED21993, Santiago, Chile
| | - Roberto Bravo-Sagua
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Centro Interuniversitario de Envejecimiento Saludable RED21993, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Facultad de Ciencias Químicas y Farmacéuticas y Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Cecilia Albala
- Instituto de Nutrición y Tecnología de los Alimentos (INTA), Universidad de Chile, Santiago, Chile
- Centro Interuniversitario de Envejecimiento Saludable RED21993, Santiago, Chile
| |
Collapse
|
5
|
Liu X, Zhao Z, Chen D, Zhang Z, Lin X, Shen Z, Lin Q, Fan K, Wang Q, Zhang W, Ou Q. SIRT1 and miR-34a-5p Expression in PBMCs as Potential Biomarkers for Patients With Type 2 Diabetes With Cognitive Impairments. J Clin Endocrinol Metab 2024; 109:815-826. [PMID: 37758217 DOI: 10.1210/clinem/dgad562] [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: 06/13/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/03/2023]
Abstract
CONTEXT Patients with type 2 diabetes mellitus (T2DM) are at significantly increased risk of Alzheimer disease (AD). However, no biomarkers are available for early identification of patients with T2DM with cognitive impairment (T2DM-CI). Mitochondrial dysfunction is linked to AD. Silent Information Regulator 1 (SIRT1), which is responsible for regulating mitochondrial biogenesis, and its related miRNAs were also altered in AD. OBJECTIVE This study aimed to determine whether mitochondrial function in peripheral blood mononuclear cells (PBMCs) of patients with T2DM-CI was altered and if these alterations could be used as biomarkers. METHODS A total of 374 subjects were enrolled, including AD, T2DM-CI, T2DM-nCI (T2DM without cognitive impairment), and healthy controls. The mitochondrial function was determined using a commercial assay kit. The mitochondrial DNA (mtDNA) content, the expression of SIRT1, and selected miRNAs in PBMCs were measured by quantitative polymerase chain reaction. The correlations and diagnostic accuracy were assessed using the Spearman correlation coefficient or receiver operating characteristics analysis, respectively. RESULTS We found significant changes in mitochondrial function in PBMCs of patients with AD compared with controls (all P < .05), which were not found in T2DM-CI. However, mtDNA content and SIRT1 mRNA expression were lower in PBMCs of patients with T2DM-CI, while miR-34a-5p expression was higher than in patients with T2DM-nCI (all P < .05). A combination of SIRT1 and miR-34a-5p demonstrated excellent discrimination between T2DM-CI and T2DM-nCI (area under the curve = 0.793; sensitivity: 80.01%; specificity: 78.46%). Furthermore, correlation analysis revealed a link between miR-34a-5p expression and hyperglycemia in T2DM-CI. CONCLUSION Our findings revealed that there was an alteration of mitochondria at the peripheral level in patients with T2DM-CI. SIRT1 combined with miR-34a-5p in PBMCs performed well in identifying patients with T2DM-CI and may be a promising biomarker.
Collapse
Affiliation(s)
- Xiaofeng Liu
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
- Fujian Key Laboratory of Laboratory Medicine, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Fujian Clinical Research Center for Clinical Immunology Laboratory Test, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Zhipei Zhao
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Dengbin Chen
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Zeqin Zhang
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Xiaozhen Lin
- Department of Geriatrics, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Zhanbo Shen
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Qingwen Lin
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Kengna Fan
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Qi Wang
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Weiqing Zhang
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
| | - Qishui Ou
- Department of Laboratory Medicine, Gene Diagnosis Research Center, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Department of Laboratory Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China
- Fujian Key Laboratory of Laboratory Medicine, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
- Fujian Clinical Research Center for Clinical Immunology Laboratory Test, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| |
Collapse
|
6
|
Peng Y, Jin H, Xue YH, Chen Q, Yao SY, Du MQ, Liu S. Current and future therapeutic strategies for Alzheimer's disease: an overview of drug development bottlenecks. Front Aging Neurosci 2023; 15:1206572. [PMID: 37600514 PMCID: PMC10438465 DOI: 10.3389/fnagi.2023.1206572] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 07/10/2023] [Indexed: 08/22/2023] Open
Abstract
Alzheimer's disease (AD) is the most common chronic neurodegenerative disease worldwide. It causes cognitive dysfunction, such as aphasia and agnosia, and mental symptoms, such as behavioral abnormalities; all of which place a significant psychological and economic burden on the patients' families. No specific drugs are currently available for the treatment of AD, and the current drugs for AD only delay disease onset and progression. The pathophysiological basis of AD involves abnormal deposition of beta-amyloid protein (Aβ), abnormal tau protein phosphorylation, decreased activity of acetylcholine content, glutamate toxicity, autophagy, inflammatory reactions, mitochondria-targeting, and multi-targets. The US Food and Drug Administration (FDA) has approved five drugs for clinical use: tacrine, donepezil, carbalatine, galantamine, memantine, and lecanemab. We have focused on the newer drugs that have undergone clinical trials, most of which have not been successful as a result of excessive clinical side effects or poor efficacy. Although aducanumab received rapid approval from the FDA on 7 June 2021, its long-term safety and tolerability require further monitoring and confirmation. In this literature review, we aimed to explore the possible pathophysiological mechanisms underlying the occurrence and development of AD. We focused on anti-Aβ and anti-tau drugs, mitochondria-targeting and multi-targets, commercially available drugs, bottlenecks encountered in drug development, and the possible targets and therapeutic strategies for future drug development. We hope to present new concepts and methods for future drug therapies for AD.
Collapse
Affiliation(s)
- Yong Peng
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Hong Jin
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Ya-hui Xue
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Quan Chen
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Shun-yu Yao
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Miao-qiao Du
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| | - Shu Liu
- Neurology Department, The First Affiliated Hospital of Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, China
- Neurology Department, The Third Affiliated Hospital of Hunan University of Chinese Medicine, Zhuzhou, Hunan, China
| |
Collapse
|
7
|
Mahapatra G, Gao Z, Bateman JR, Lockhart SN, Bergstrom J, DeWitt AR, Piloso JE, Kramer PA, Gonzalez-Armenta JL, Amick A, Casanova R, Craft S, Molina AJA. Blood-based bioenergetic profiling reveals differences in mitochondrial function associated with cognitive performance and Alzheimer's disease. Alzheimers Dement 2023; 19:1466-1478. [PMID: 35870133 PMCID: PMC9868193 DOI: 10.1002/alz.12731] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 05/26/2022] [Accepted: 06/01/2022] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Despite evidence for systemic mitochondrial dysfunction early in Alzheimer's disease (AD) pathogenesis, reliable approaches monitoring these key bioenergetic alterations are lacking. We used peripheral blood mononuclear cells (PBMCs) and platelets as reporters of mitochondrial function in the context of cognitive impairment and AD. METHODS Mitochondrial function was analyzed using complementary respirometric approaches in intact and permeabilized cells from older adults with normal cognition, mild cognitive impairment (MCI), and dementia due to probable AD. Clinical outcomes included measures of cognitive function and brain morphology. RESULTS PBMC and platelet bioenergetic parameters were lowest in dementia participants. MCI platelets exhibited higher maximal respiration than normocognitives. PBMC and platelet respiration positively associated with cognitive ability and hippocampal volume, and negatively associated with white matter hyperintensities. DISCUSSION Our findings indicate blood-based bioenergetic profiling can be used as a minimally invasive approach for measuring systemic bioenergetic differences associated with dementia, and may be used to monitor bioenergetic changes associated with AD risk and progression. HIGHLIGHTS Peripheral cell bioenergetic alterations accompanied cognitive decline in older adults with mild cognitive impairment (MCI) and Alzheimer's disease (AD) and related dementia (DEM). Peripheral blood mononuclear cells (PBMC) and platelet glucose-mediated respiration decreased in participants with dementia compared to normocognitive controls (NC). PBMC fatty-acid oxidation (FAO)-mediated respiration progressively declined in MCI and AD compared to NC participants, while platelet FAO-mediated respiration exhibited an inverse-Warburg effect in MCI compared to NC participants. Positive associations were observed between bioenergetics and Modified Preclinical Alzheimer's Cognitive Composite, and bioenergetics and hippocampal volume %, while a negative association was observed between bioenergetics and white matter hyperintensities. Systemic mitochondrial dysfunction is associated with cognitive decline.
Collapse
Affiliation(s)
- Gargi Mahapatra
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Zhengrong Gao
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - James R. Bateman
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
- Department of Neurology, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Samuel Neal Lockhart
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Jaclyn Bergstrom
- Division of Geriatrics, Gerontology, and Palliative Care, Department of Medicine, University of California San Diego School of Medicine, La Jolla, California, USA
| | - Amber Renee DeWitt
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Jemima Elizabeth Piloso
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Philip Adam Kramer
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Jenny L. Gonzalez-Armenta
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Allison Amick
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Ramon Casanova
- Division of Public Health Sciences, Wake Forest University Health Sciences, Winston-Salem, North Carolina, USA
| | - Suzanne Craft
- Section on Gerontology and Geriatrics, Sticht Center for Healthy Aging and Alzheimer’s Prevention, Department of Internal Medicine, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Anthony J. A. Molina
- Division of Geriatrics, Gerontology, and Palliative Care, Department of Medicine, University of California San Diego School of Medicine, La Jolla, California, USA
| |
Collapse
|
8
|
Bandaru LJM, Murumulla L, C BL, D KP, Challa S. Exposure of combination of environmental pollutant, lead (Pb) and β-amyloid peptides causes mitochondrial dysfunction and oxidative stress in human neuronal cells. J Bioenerg Biomembr 2023; 55:79-89. [PMID: 36637735 DOI: 10.1007/s10863-023-09956-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 01/06/2023] [Indexed: 01/14/2023]
Abstract
Exposure to the environmental pollutant lead (Pb) has been linked to Alzheimer's disease (AD), in which mitochondrial dysfunction is a pathological consequence of neuronal degeneration. The toxicity of Pb in combination with β-amyloid peptides (1-40) and (25-35) causes selective death in neuronal cells. However, the precise mechanism through which Pb induces Alzheimer's disease, particularly mitochondrial damage, is unknown. Changes in mitochondrial mass, membrane potential, mitochondrial complex activities, mitochondrial DNA and oxidative stress were examined in neuronal cells of human origin exposed to Pb and β-amyloid peptides (1-40) and (25-35) individually and in different combinations. The results showed depolarization of mitochondrial membrane potential, decrease in mitochondrial mass, ATP levels and mtDNA copy number in Pb and β-amyloid peptides (1-40) and (25-35) exposed cells. Also, significant reductions in the expression of mitochondrial electron transport chain (ETC) complex proteins (ATP5A, COXIV, UQCRC2, SDHB, NDUFS3), as well as down regulation of ETC complex gene expressions such as COXIV, ATP5F1 and NDUFS3 and antioxidant gene expressions like MnSOD and Gpx4 were observed in exposed cells. Furthermore, Pb and β-amyloid peptides exposure resulted in elevated mitochondrial malondialdehyde levels and a decrease in mitochondrial GSH levels. Our findings suggest that Pb toxicity could be one of the causative factors for the mitochondrial dysfunction and oxidative stress in Alzheimer's disease progression.
Collapse
Affiliation(s)
- Lakshmi Jaya Madhuri Bandaru
- Cell Biology Division, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India
| | - Lokesh Murumulla
- Cell Biology Division, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India
| | - Bindu Lasya C
- Department of Pharmacology, Anurag University, Hyderabad, India
| | | | - Suresh Challa
- Cell Biology Division, National Institute of Nutrition, Indian Council of Medical Research (ICMR), Hyderabad, Telangana, 500007, India.
| |
Collapse
|
9
|
Greeck VB, Williams SK, Haas J, Wildemann B, Fairless R. Alterations in Lymphocytic Metabolism-An Emerging Hallmark of MS Pathophysiology? Int J Mol Sci 2023; 24:ijms24032094. [PMID: 36768415 PMCID: PMC9917089 DOI: 10.3390/ijms24032094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune disease of the central nervous system (CNS) characterised by acute inflammation and subsequent neuro-axonal degeneration resulting in progressive neurological impairment. Aberrant immune system activation in the periphery and subsequent lymphocyte migration to the CNS contribute to the pathophysiology. Recent research has identified metabolic dysfunction as an additional feature of MS. It is already well known that energy deficiency in neurons caused by impaired mitochondrial oxidative phosphorylation results in ionic imbalances that trigger degenerative pathways contributing to white and grey matter atrophy. However, metabolic dysfunction in MS appears to be more widespread than the CNS. This review focuses on recent research assessing the metabolism and mitochondrial function in peripheral immune cells of MS patients and lymphocytes isolated from murine models of MS. Emerging evidence suggests that pharmacological modulation of lymphocytic metabolism may regulate their subtype differentiation and rebalance pro- and anti-inflammatory functions. As such, further understanding of MS immunometabolism may aid the identification of novel treatments to specifically target proinflammatory immune responses.
Collapse
Affiliation(s)
- Viktoria B. Greeck
- Department of Neurology, University Clinic Heidelberg, 69120 Heidelberg, Germany
- Clinical Cooperation Unit (CCU) Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Sarah K. Williams
- Department of Neurology, University Clinic Heidelberg, 69120 Heidelberg, Germany
- Clinical Cooperation Unit (CCU) Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Jürgen Haas
- Department of Neurology, University Clinic Heidelberg, 69120 Heidelberg, Germany
| | - Brigitte Wildemann
- Department of Neurology, University Clinic Heidelberg, 69120 Heidelberg, Germany
| | - Richard Fairless
- Department of Neurology, University Clinic Heidelberg, 69120 Heidelberg, Germany
- Clinical Cooperation Unit (CCU) Neurooncology, German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
- Correspondence:
| |
Collapse
|
10
|
Liu Q, Li Z, Huang L, Zhou D, Fu J, Duan H, Wang Z, Yang T, Zhao J, Li W, Liu H, Ma F, Sun C, Wang G, Du Y, Zhang M, Chen Y, Huang G. Telomere and mitochondria mediated the association between dietary inflammatory index and mild cognitive impairment: A prospective cohort study. Immun Ageing 2023; 20:1. [PMID: 36604719 PMCID: PMC9813461 DOI: 10.1186/s12979-022-00326-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 12/28/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Diet and chronic inflammation might play a major role in the pathogenesis of mild cognitive impairment (MCI). In addition, peripheral blood leukocyte telomere length (LTL) and mitochondrial DNA copy number (mtDNAcn) might mediate the relationship between inflammation and MCI risk. The purpose of the present study is to evaluate whether inflammatory potential of diet assessed by dietary inflammatory index (DII), chronic inflammation, peripheral blood LTL, and mtDNAcn were associated with the risk of MCI. RESULTS A population-based cohort study was conducted with a total of 2944 participants. During a median follow-up of 2 years, 438 (14.90%) individuals were new-onset MCI. After adjustment, a higher score of DII (hazard ratio [HR]: 1.056, 95% CI: 1.005, 1.109), a higher log systemic immune inflammation index (SII) (HR: 1.333, 95% CI: 1.089, 1.633) and log system inflammation response index (SIRI) (HR: 1.487, 95% CI: 1.024, 2.161) predicted elevated risk of MCI. An increased mtDNAcn (HR: 0.843, 95% CI: 0.712, 0.997), but not LTL, predicted a decreased risk of MCI. Negative associations of log SII with LTL (β:-0.359, 95% CI: -0.445, -0.273) and mtDNAcn (β:-0.048, 95% CI: -0.090, -0.006) were found. Additionally, negative associations of log SIRI with LTL (β: -0.035, 95% CI: -0.052, -0.017) and mtDNAcn (β:-0.136, 95% CI: -0.216, -0.056) were also found. Path analysis suggested that SIRI, LTL, and mtDNAcn, in series, have mediation roles in the association between DII score and MCI risk. CONCLUSIONS Higher DII, SII, and SIRI might predict a greater risk of MCI, while a longer LTL and an increased mtDNAcn were linked to a reduced risk of MCI among the older population. LTL and mtDNAcn could play mediation roles in the association between DII and MCI risk.
Collapse
Affiliation(s)
- Qian Liu
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Zhenshu Li
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Ling Huang
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Dezheng Zhou
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Jingzhu Fu
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Huilian Duan
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Zehao Wang
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Tong Yang
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Jing Zhao
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Wen Li
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Huan Liu
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Fei Ma
- grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China ,grid.265021.20000 0000 9792 1228Department of Epidemiology & Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Changqing Sun
- grid.265021.20000 0000 9792 1228Neurosurgical Department of Baodi Clinical College, Tianjin Medical University, Tianjin, China
| | - Guangshun Wang
- grid.265021.20000 0000 9792 1228Department of Tumor, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Yue Du
- grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China ,grid.265021.20000 0000 9792 1228Department of Social Medicine and Health Management, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Meilin Zhang
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Yongjie Chen
- grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China ,grid.265021.20000 0000 9792 1228Department of Epidemiology & Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Guowei Huang
- grid.265021.20000 0000 9792 1228Department of Nutrition & Food Science, School of Public Health, Tianjin Medical University, Tianjin, China ,grid.265021.20000 0000 9792 1228Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| |
Collapse
|
11
|
Xie Z, Yu G, Yun Y, Zhang X, Shen M, Jia M, Li A, Zhang H, Wang T, Zhang J, Zhang L. Effects of bamboo leaf extract on energy metabolism, antioxidant capacity, and biogenesis of small intestine mitochondria in broilers. J Anim Sci 2023; 101:skac391. [PMID: 36440554 PMCID: PMC9833010 DOI: 10.1093/jas/skac391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
The present study was carried out to investigate the effects of bamboo leaf extract (BLE) on energy metabolism, antioxidant capacity, and biogenesis of broilers' small intestine mitochondria. A total of 384 one-day-old male Arbor Acres broiler chicks were randomly divided into four groups with six replicates each for 42 d. The control group was fed a basal diet, whereas the BLE1, BLE2, and BLE3 groups consumed basal diets with 1.0, 2.0, and 4.0 g/kg of BLE, respectively. Some markers of mitochondrial energy metabolism including isocitrate dehydrogenase, α-ketoglutarate dehydrogenase, and malate dehydrogenase and some markers of redox system including total superoxide dismutase, malondialdehyde, and glutathione were measured by commercial colorimetric kits. Mitochondrial and cellular antioxidant genes, mitochondrial biogenesis-related genes, and mitochondrial DNA copy number were measured by quantitative real-time-polymerase chain reaction (qRT-PCR). Data were analyzed using the SPSS 19.0, and differences were considered as significant at P < 0.05. BLE supplementation linearly increased jejunal mitochondrial isocitrate dehydrogenase (P < 0.05) and total superoxide dismutase (P < 0.05) activity. The ileal manganese superoxide dismutase mRNA expression was linearly affected by increased dietary BLE supplementation (P < 0.05). Increasing BLE supplementation linearly increased jejunal sirtuin 1 (P < 0.05) and nuclear respiratory factor 1 (P < 0.05) mRNA expression. Linear (P < 0.05) and quadratic (P < 0.05) responses of the ileal nuclear respiratory factor 2 mRNA expression occurred with increased dietary BLE levels. In conclusion, BLE supplementation was beneficial to the energy metabolism, antioxidant capacity, and biogenesis of small intestine mitochondria in broilers. The dose of 4.0 g/kg BLE demonstrated the best effects.
Collapse
Affiliation(s)
- Zechen Xie
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Ge Yu
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Yang Yun
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Xin Zhang
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Mingming Shen
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Minghui Jia
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Anqi Li
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Hao Zhang
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Tian Wang
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Jingfei Zhang
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| | - Lili Zhang
- College of Animal Science and Technology, Nanjing Agriculture University, Nanjing, Jiangsu 210095, P. R. China
| |
Collapse
|
12
|
Liu M, Sun X, Chen B, Dai R, Xi Z, Xu H. Insights into Manganese Superoxide Dismutase and Human Diseases. Int J Mol Sci 2022; 23:ijms232415893. [PMID: 36555531 PMCID: PMC9786916 DOI: 10.3390/ijms232415893] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
Redox equilibria and the modulation of redox signalling play crucial roles in physiological processes. Overproduction of reactive oxygen species (ROS) disrupts the body's antioxidant defence, compromising redox homeostasis and increasing oxidative stress, leading to the development of several diseases. Manganese superoxide dismutase (MnSOD) is a principal antioxidant enzyme that protects cells from oxidative damage by converting superoxide anion radicals to hydrogen peroxide and oxygen in mitochondria. Systematic studies have demonstrated that MnSOD plays an indispensable role in multiple diseases. This review focuses on preclinical evidence that describes the mechanisms of MnSOD in diseases accompanied with an imbalanced redox status, including fibrotic diseases, inflammation, diabetes, vascular diseases, neurodegenerative diseases, and cancer. The potential therapeutic effects of MnSOD activators and MnSOD mimetics are also discussed. Targeting this specific superoxide anion radical scavenger may be a clinically beneficial strategy, and understanding the therapeutic role of MnSOD may provide a positive insight into preventing and treating related diseases.
Collapse
Affiliation(s)
- Mengfan Liu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Xueyang Sun
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Boya Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Rongchen Dai
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Zhichao Xi
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
- Correspondence: (Z.X.); (H.X.)
| | - Hongxi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
- Engineering Research Center, Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
- Correspondence: (Z.X.); (H.X.)
| |
Collapse
|
13
|
Mohanty K, Mishra S, Dada R, Dada T. Mitochondrial Genome Alterations, Cytochrome C Oxidase Activity, and Oxidative Stress: Implications in Primary Open-angle Glaucoma. J Curr Glaucoma Pract 2022; 16:158-165. [PMID: 36793267 PMCID: PMC9905874 DOI: 10.5005/jp-journals-10078-1376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 04/22/2022] [Indexed: 01/25/2023] Open
Abstract
Aim To evaluate mitochondrial genome alterations, cytochrome c oxidase (COX) activity, and oxidative stress in primary open-angle glaucoma (POAG). Methodology Whole mitochondrial genome was screened in 75 POAG cases and 105 controls by polymerase chain reaction (PCR) sequencing. COX activity was measured from peripheral blood mononuclear cells (PBMCs). A protein modeling study was done to evaluate the impact of G222E variant on protein function. Levels of 8-hydroxy-2-deoxyguanosine (8-OHdG), 8-isoprostane (8-IP), and total antioxidant capacity (TAC) were also measured. Results A total of 156 and 79 mitochondrial nucleotide variations were found in the cohort of 75 POAG patients and 105 controls, respectively. Ninety-four (60.26%) variations spanned the coding region, and 62 (39.74%) variations spanned noncoding regions (D-loop, 12SrRNA, and 16SrRNA) of mitochondrial genome in POAG patients. Out of 94 nucleotide changes in coding region, 68 (72.34%) were synonymous changes, 23 (24.46%) non-synonymous, and three (3.19%) were found in the region coding for transfer ribonucleic acid (tRNA). Three changes (p.E192K in ND1, p.L128Q in ND2, and p.G222E in COX2) were found to be pathogenic. Twenty-four (32.0%) patients were positive for either of these pathogenic mitochondrial deoxyribonucleic acid (mtDNA) nucleotide changes. Majority of cases (18.7%) had pathogenic mutation in COX2 gene. Patients who harbored pathogenic mtDNA change in COX2 gene had significantly lower levels of COX activity (p < 0.0001) and TAC (p = 0.004), and higher levels of 8-IP (p = 0.01) as compared to patients who did not harbor this mtDNA. G222E changed the electrostatic potential and adversely impacted protein function of COX2 by affecting nonpolar interactions with neighboring subunits. Conclusion Pathogenic mtDNA mutations were present in POAG patients, which were associated with reduced COX activity and increased levels of oxidative stress. Clinical significance POAG patients should be evaluated for mitochondrial mutations and oxidative stress and may be managed accordingly with antioxidant therapies. How to cite this article Mohanty K, Mishra S, Dada R, et al. Mitochondrial Genome Alterations, Cytochrome C Oxidase Activity, and Oxidative Stress: Implications in Primary Open-angle Glaucoma. J Curr Glaucoma Pract 2022;16(3):158-165.
Collapse
Affiliation(s)
- Kuldeep Mohanty
- Department of Ophthalmology, All India Institute of Medical Sciences, New Delhi, India
| | - Swetasmita Mishra
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Rima Dada
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Tanuj Dada
- Department of Ophthalmology, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
14
|
Targeted Mitochondrial Epigenetics: A New Direction in Alzheimer’s Disease Treatment. Int J Mol Sci 2022; 23:ijms23179703. [PMID: 36077101 PMCID: PMC9456144 DOI: 10.3390/ijms23179703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/19/2022] [Accepted: 08/25/2022] [Indexed: 11/23/2022] Open
Abstract
Mitochondrial epigenetic alterations are closely related to Alzheimer’s disease (AD), which is described in this review. Reports of the alteration of mitochondrial DNA (mtDNA) methylation in AD demonstrate that the disruption of the dynamic balance of mtDNA methylation and demethylation leads to damage to the mitochondrial electron transport chain and the obstruction of mitochondrial biogenesis, which is the most studied mitochondrial epigenetic change. Mitochondrial noncoding RNA modifications and the post-translational modification of mitochondrial nucleoproteins have been observed in neurodegenerative diseases and related diseases that increase the risk of AD. Although there are still relatively few mitochondrial noncoding RNA modifications and mitochondrial nuclear protein post-translational modifications reported in AD, we have reason to believe that these mitochondrial epigenetic modifications also play an important role in the AD process. This review provides a new research direction for the AD mechanism, starting from mitochondrial epigenetics. Further, this review summarizes therapeutic approaches to targeted mitochondrial epigenetics, which is the first systematic summary of therapeutic approaches in the field, including folic acid supplementation, mitochondrial-targeting antioxidants, and targeted ubiquitin-specific proteases, providing a reference for therapeutic targets for AD.
Collapse
|
15
|
Lopez-Toledo G, Silva-Lucero MDC, Herrera-Díaz J, García DE, Arias-Montaño JA, Cardenas-Aguayo MDC. Patient-Derived Fibroblasts With Presenilin-1 Mutations, That Model Aspects of Alzheimer’s Disease Pathology, Constitute a Potential Object for Early Diagnosis. Front Aging Neurosci 2022; 14:921573. [PMID: 35847683 PMCID: PMC9283986 DOI: 10.3389/fnagi.2022.921573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD), a neurodegenerative disorder that can occur in middle or old age, is characterized by memory loss, a continuous decline in thinking, behavioral and social skills that affect the ability of an individual to function independently. It is divided into sporadic and familial subtypes. Early-onset familial AD (FAD) is linked to mutations in genes coding for the amyloid-β protein precursor (AβPP), presenilin 1 (PS1), and presenilin 2 (PS2), which lead to alterations in AβPP processing, generation of the Amyloid-β peptide and hyperphosphorylation of tau protein. Identification of early biomarkers for AD diagnosis represents a challenge, and it has been suggested that molecular changes in neurodegenerative pathways identified in the brain of AD patients can be detected in peripheral non-neural cells derived from familial or sporadic AD patients. In the present study, we determined the protein expression, the proteomic and in silico characterization of skin fibroblasts from FAD patients with PS1 mutations (M146L or A246E) or from healthy individuals. Our results shown that fibroblasts from AD patients had increased expression of the autophagy markers LC3II, LAMP2 and Cathepsin D, a significant increase in total GSK3, phosphorylated ERK1/2 (Thr202/Tyr204) and phosphorylated tau (Thr231, Ser396, and Ser404), but no difference in the phosphorylation of Akt (Ser473) or the α (Ser21) and β (Ser9) GSK3 isoforms, highlighting the relevant role of abnormal protein post-translational modifications in age-related neurodegenerative diseases, such as AD. Both 2-DE gels and mass spectrometry showed significant differences in the expression of the signaling pathways associated with protein folding and the autophagic pathway mediated by chaperones with the expression of HSPA5, HSPE1, HSPD1, HSP90AA1, and HSPE1 and reticular stress in the FAD samples. Furthermore, expression of the heat shock proteins HSP90 and HSP70 was significantly higher in the cells from AD patients as confirmed by Western blot. Taken together our results indicate that fibroblasts from patients with FAD-PS1 present alterations in signaling pathways related to cellular stress, autophagy, lysosomes, and tau phosphorylation. Fibroblasts can therefore be useful in modeling pathways related to neurodegeneration, as well as for the identification of early AD biomarkers.
Collapse
Affiliation(s)
- Gustavo Lopez-Toledo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Mexico City, Mexico
| | - Maria-del-Carmen Silva-Lucero
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Jorge Herrera-Díaz
- Unidad de Servicios de Apoyo a la Investigación y a la Industria, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - David-Erasmo García
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - José-Antonio Arias-Montaño
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Mexico City, Mexico
| | - Maria-del-Carmen Cardenas-Aguayo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
- *Correspondence: Maria-del-Carmen Cardenas-Aguayo,
| |
Collapse
|
16
|
Niesen AM, Genther-Schroeder ON, Bradley CMK, Davidson JA, Rossow HA. Peripheral blood mononuclear cell mitochondrial enzyme activity is associated with parity and lactation performance in early lactation Holstein dairy cows. J Dairy Sci 2022; 105:7036-7046. [PMID: 35787326 DOI: 10.3168/jds.2021-21599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/06/2022] [Indexed: 11/19/2022]
Abstract
Mitochondria are central to metabolism and are the primary energy producers for all biosynthesis, including lactation. The objectives of this study were to determine if high- and low-producing dairy cows exhibit differences in peripheral blood mononuclear cell mitochondrial enzyme activities of citrate synthase, complex I, complex IV, and complex V during early lactation and, thus, to determine whether those differences were related to differences in lactation performance in the dairy cow. Fifty-six Holstein cows were assigned to 1 of 4 groups: (1) primiparous high, (2) primiparous low, (3) multiparous high, or (4) multiparous low. Primiparous and multiparous cows were analyzed separately. Then, cows were divided into high or low production groups for each production parameter [peak milk, average milk, energy-corrected milk (ECM), fat-corrected milk (FCM), milk lactose, milk fat, milk protein, total solids (TS), solids-not-fat, feed efficiency, and somatic cell count (SCC)]. For all data analysis, production parameters are expressed as yields (kg/d) and SCC (103 cells/mL). High and low production groups were defined by their respective mean production parameters for the 56 cows, with below average cows defined as low and above average cows defined as high. Whole blood samples were collected at one time point, approximately 70 d in milk at 0800 h, and processed for crude mitochondrial extracts from peripheral blood mononuclear cells to determine the activity rates of mitochondrial enzymes. Milk samples were collected 9 times (3 d, 3 times per d) during the week of blood collection and analyzed for major components (fat, protein, lactose, TS, and SCC). Multiparous cows had lower citrate synthase activity than primiparous cows across all production parameters. High-producing cows had greater complex I activity for peak milk, milk yield, ECM, FCM, milk fat, TS, and feed efficiency, and greater complex V activity for ECM, FCM, milk lactose, milk fat, and TS across parities. These findings imply that the most influential respiratory chain enzymes on the level of milk production are those responsible for electron transport chain initialization and ATP production.
Collapse
Affiliation(s)
- A M Niesen
- Department of Population Health and Reproduction, University of California, Davis 95616
| | | | | | | | - H A Rossow
- Department of Population Health and Reproduction, University of California, Davis 95616.
| |
Collapse
|
17
|
Stoccoro A, Baldacci F, Ceravolo R, Giampietri L, Tognoni G, Siciliano G, Migliore L, Coppedè F. Increase in Mitochondrial D-Loop Region Methylation Levels in Mild Cognitive Impairment Individuals. Int J Mol Sci 2022; 23:ijms23105393. [PMID: 35628202 PMCID: PMC9142993 DOI: 10.3390/ijms23105393] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 12/25/2022] Open
Abstract
Methylation levels of the mitochondrial displacement loop (D-loop) region have been reported to be altered in the brain and blood of Alzheimer’s disease (AD) patients. Moreover, a dynamic D-loop methylation pattern was observed in the brain of transgenic AD mice along with disease progression. However, investigations on the blood cells of AD patients in the prodromal phases of the disease have not been performed so far. The aim of this study was to analyze D-loop methylation levels by means of the MS-HRM technique in the peripheral blood cells of 14 mild cognitive impairment (MCI) patients, 18 early stage AD patients, 70 advanced stage AD patients, and 105 healthy control subjects. We found higher D-loop methylation levels in MCI patients than in control subjects and AD patients. Moreover, higher D-loop methylation levels were observed in control subjects than in AD patients in advanced stages of the disease, but not in those at early stages. The present pilot study shows that peripheral D-loop methylation levels differ in patients at different stages of AD pathology, suggesting that further studies deserve to be performed in order to validate the usefulness of D-loop methylation analysis as a peripheral biomarker for the early detection of AD.
Collapse
Affiliation(s)
- Andrea Stoccoro
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Correspondence: (A.S.); (F.C.); Tel.: +39-0502-218549 (A.S.); +39-0502-218544 (F.C.)
| | - Filippo Baldacci
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.B.); (R.C.); (L.G.); (G.T.); (G.S.)
| | - Roberto Ceravolo
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.B.); (R.C.); (L.G.); (G.T.); (G.S.)
| | - Linda Giampietri
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.B.); (R.C.); (L.G.); (G.T.); (G.S.)
| | - Gloria Tognoni
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.B.); (R.C.); (L.G.); (G.T.); (G.S.)
| | - Gabriele Siciliano
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (F.B.); (R.C.); (L.G.); (G.T.); (G.S.)
| | - Lucia Migliore
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
| | - Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Via Roma 55, 56126 Pisa, Italy;
- Correspondence: (A.S.); (F.C.); Tel.: +39-0502-218549 (A.S.); +39-0502-218544 (F.C.)
| |
Collapse
|
18
|
Burtscher J, Romani M, Bernardo G, Popa T, Ziviani E, Hummel FC, Sorrentino V, Millet GP. Boosting mitochondrial health to counteract neurodegeneration. Prog Neurobiol 2022; 215:102289. [DOI: 10.1016/j.pneurobio.2022.102289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/23/2022] [Accepted: 05/25/2022] [Indexed: 12/22/2022]
|
19
|
Mitochondrial Genetics Reinforces Multiple Layers of Interaction in Alzheimer’s Disease. Biomedicines 2022; 10:biomedicines10040880. [PMID: 35453630 PMCID: PMC9028063 DOI: 10.3390/biomedicines10040880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Nuclear DNA remains the main source of genome-wide loci association in neurodegenerative diseases, only partially accounting for the heritability of Alzheimer’s Disease (AD). In this context, mitochondrial DNA (mtDNA) is gaining more attention. Here, we investigated mitochondrial genes and genetic variants that may influence mild cognitive impairment and AD, through an integrative analysis including both differential gene expression and mitochondrial genome-wide epistasis analysis. Our results highlight important layers of interactions involving mitochondrial genetics and suggest specific molecular alterations as potential biomarkers for AD. Abstract Nuclear DNA has been the main source of genome-wide loci association in neurodegenerative diseases, only partially accounting for the heritability of Alzheimer’s Disease (AD). In this context, mitochondrial DNA (mtDNA) is gaining more attention. Here, we investigated mitochondrial genes and genetic variants that may influence mild cognitive impairment and AD, through an integrative analysis including differential gene expression and mitochondrial genome-wide epistasis. We assessed the expression of mitochondrial genes in different brain tissues from two public RNA-Seq databases (GEO and GTEx). Then, we analyzed mtDNA from the ADNI Cohort and investigated epistasis regarding mitochondrial variants and levels of Aβ1−42, TAU, and Phosphorylated TAU (PTAU) from cognitively healthy controls, and both mild cognitive impairment (MCI) and AD cases. We identified multiple differentially expressed mitochondrial genes in the comparisons between cognitively healthy individuals and AD patients. We also found increased protein levels in MCI and AD patients when compared to healthy controls, as well as novel candidate networks of mtDNA epistasis, which included variants in all mitochondrially-encoded oxidative phosphorylation complexes, 12S rRNA and MT-DLOOP. Our results highlight layers of potential interactions involving mitochondrial genetics and suggest specific molecular alterations as potential biomarkers for AD.
Collapse
|
20
|
Detection of Pathological Markers of Neurodegenerative Diseases following Microfluidic Direct Conversion of Patient Fibroblasts into Neurons. Int J Mol Sci 2022; 23:ijms23042147. [PMID: 35216271 PMCID: PMC8879457 DOI: 10.3390/ijms23042147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/11/2022] [Accepted: 02/13/2022] [Indexed: 12/28/2022] Open
Abstract
Neurodegenerative diseases such as Alzheimer’s disease and Parkinson’s disease are clinically diagnosed using neuropsychological and cognitive tests, expensive neuroimaging-based approaches (MRI and PET) and invasive and time-consuming lumbar puncture for cerebrospinal fluid (CSF) sample collection to detect biomarkers. Thus, a rapid, simple and cost-effective approach to more easily access fluids and tissues is in great need. Here, we exploit the chemical direct reprogramming of patient skin fibroblasts into neurons (chemically induced neurons, ciNs) as a novel strategy for the rapid detection of different pathological markers of neurodegenerative diseases. We found that FAD fibroblasts have a reduced efficiency of reprogramming, and converted ciNs show a less complex neuronal network. In addition, ciNs from patients show misfolded protein accumulation and mitochondria ultrastructural abnormalities, biomarkers commonly associated with neurodegeneration. Moreover, for the first time, we show that microfluidic technology, in combination with chemical reprogramming, enables on-chip examination of disease pathological processes and may have important applications in diagnosis. In conclusion, ciNs on microfluidic devices represent a small-scale, non-invasive and cost-effective high-throughput tool for protein misfolding disease diagnosis and may be useful for new biomarker discovery, disease mechanism studies and design of personalised therapies.
Collapse
|
21
|
Chang CC, Chen PS, Lin JR, Chen YA, Liu CS, Lin TT, Chang HH. Mitochondrial DNA Copy Number Is Associated With Treatment Response and Cognitive Function in Euthymic Bipolar Patients Receiving Valproate. Int J Neuropsychopharmacol 2022; 25:525-533. [PMID: 34979555 PMCID: PMC9352174 DOI: 10.1093/ijnp/pyab095] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/20/2021] [Accepted: 01/02/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Bipolar disorder (BD) is associated with cognitive impairment and mitochondrial dysfunction. However, the associations among mitochondrial DNA copy number (MCN), treatment response, and cognitive function remain elusive in BD patients. METHODS Sixty euthymic BD patients receiving valproate (VPA) and 66 healthy controls from the community were recruited. The indices of metabolic syndrome (MetS) were measured. Quantitative polymerase chain reaction analysis of blood leukocytes was used to measure the MCN. Cognitive function was measured by calculating perseverative errors and completed categories on the Wisconsin Card Sorting Test (WCST). The VPA treatment response was measured using the Alda scale. RESULTS BD patients had significantly higher MCN, triglyceride, and C-reactive protein (CRP) levels, waist circumference, and worse performance on the WCST than the controls. Regression models showed that BD itself and the VPA concentration exerted significant effects on increased MCN levels. Moreover, the receiver operating characteristic curve analysis showed that an MCN of 2.05 distinguished VPA responders from nonresponders, with an area under the curve of 0.705 and a sensitivity and specificity of 0.529 and 0.816, respectively. An MCN level ≥2.05 was associated with 5.39 higher odds of being a VPA responder (P = .006). BD patients who were stratified into the high-MCN group had a higher VPA response rate, better WCST performance, lower CRP level, and less MetS. CONCLUSIONS The study suggests a link between the peripheral MCN and cognitive function in BD patients. As an inflammatory status, MetS might modulate this association.
Collapse
Affiliation(s)
| | | | - Jhih-Rong Lin
- Institute of Clinical Pharmacy and Pharmaceutical Sciences College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yi-An Chen
- Institute of Clinical Pharmacy and Pharmaceutical Sciences College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chin-San Liu
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua, Taiwan,Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Ta-Tsung Lin
- Vascular and Genomic Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Hui Hua Chang
- Correspondence: Hui Hua Chang, PhD, Institute of Clinical Pharmacy and Pharmaceutical Sciences, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan ()
| |
Collapse
|
22
|
Liou CW, Chen SH, Lin TK, Tsai MH, Chang CC. Oxidative Stress Biomarkers and Mitochondrial DNA Copy Number Associated with APOE4 Allele and Cholinesterase Inhibitor Therapy in Patients with Alzheimer's Disease. Antioxidants (Basel) 2021; 10:antiox10121971. [PMID: 34943074 PMCID: PMC8750673 DOI: 10.3390/antiox10121971] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/02/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022] Open
Abstract
Studies of the oxidative/anti-oxidative status in patients with Alzheimer’s disease (AD) carrying different alleles of the apolipoprotein E (APOE) gene are currently inconclusive; meanwhile, data regarding mitochondrial DNA copy number (mtCN) remain limited. We herein determined the thiobarbituric acid reactive substances (TBARS), thiols, and mtCN in blood samples of 600 AD patients and 601 controls. A significantly higher oxidative TBARS (1.64 μmol/L), lower antioxidative thiols (1.60 μmol/L), and lower mtCN (2.34 log Delta Ct) were found in the AD cohort as compared to the non-AD cohort (1.54 μmol/L, 1.71 μmol/L, 2.46 log Delta Ct). We further identified the ε4 alleles (APOE4) and separated subjects into three groups according to the number of APOE4. A significant trend was noted in the TBARS levels of both AD and non-AD cohorts, highest in the homozygous two alleles (1.86 and 1.80 μmol/L), followed by heterozygous one allele (1.70 and 1.74 μmol/L), and lowest in the no APOE4 allele (1.56 and 1.48 μmol/L). Similar trends of lower thiols and mtCN were also found in the AD cohort. In our study of the influence of cholinesterase inhibitor therapy, we found significantly reduced TBARS levels, and elevated mtCN in AD patients receiving rivastigmine and galantamine therapy. Our study demonstrates associations between the APOE4 allele and oxidative stress biomarkers and mtCN. Using cholinesterase inhibitor therapy may benefit AD patients through attenuation of oxidative stress and manipulation of the mtCN.
Collapse
Affiliation(s)
- Chia-Wei Liou
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (C.-W.L.); (S.-H.C.); (T.-K.L.)
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Shih-Hsuan Chen
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (C.-W.L.); (S.-H.C.); (T.-K.L.)
| | - Tsu-Kung Lin
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (C.-W.L.); (S.-H.C.); (T.-K.L.)
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Meng-Han Tsai
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (C.-W.L.); (S.-H.C.); (T.-K.L.)
- Correspondence: (M.-H.T.); (C.-C.C.); Tel.: +886-7-7317123 (ext. 2285) (M.-H.T.); +886-7-7318762 (C.-C.C.)
| | - Chiung-Chih Chang
- Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (C.-W.L.); (S.-H.C.); (T.-K.L.)
- Cognition and Aging Center and Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
- Correspondence: (M.-H.T.); (C.-C.C.); Tel.: +886-7-7317123 (ext. 2285) (M.-H.T.); +886-7-7318762 (C.-C.C.)
| |
Collapse
|
23
|
Bisdemethoxycurcumin Protects Small Intestine from Lipopolysaccharide-Induced Mitochondrial Dysfunction via Activating Mitochondrial Antioxidant Systems and Mitochondrial Biogenesis in Broiler Chickens. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9927864. [PMID: 34795844 PMCID: PMC8595021 DOI: 10.1155/2021/9927864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 10/04/2021] [Accepted: 10/25/2021] [Indexed: 12/11/2022]
Abstract
Bisdemethoxycurcumin is one of the three curcuminoids of turmeric and exhibits good antioxidant activity in animal models. This study is aimed at investigating the effect of bisdemethoxycurcumin on small intestinal mitochondrial dysfunction in lipopolysaccharide- (LPS-) treated broilers, especially on the mitochondrial thioredoxin 2 system and mitochondrial biogenesis. A total of 320 broiler chickens were randomly assigned into four experimental diets using a 2 × 2 factorial arrangement with diet (0 and 150 mg/kg bisdemethoxycurcumin supplementation) and stress (saline or LPS challenge) for 20 days. Broilers received a dose of LPS (1 mg/kg body weight) or sterile saline intraperitoneally on days 16, 18, and 20 of the trial. Bisdemethoxycurcumin mitigated the mitochondrial dysfunction of jejunum and ileum induced by LPS, as evident by the reduced reactive oxygen species levels and the increased mitochondrial membrane potential. Bisdemethoxycurcumin partially reversed the decrease in the mitochondrial DNA copy number and the depletion of ATP levels. Bisdemethoxycurcumin activated the mitochondrial antioxidant response, including the prevention of lipid peroxidation, enhancement of manganese superoxide dismutase activity, and the upregulation of the mitochondrial glutaredoxin 5 and thioredoxin 2 system. The enhanced mitochondrial respiratory complex activities in jejunum and ileum were also attributed to bisdemethoxycurcumin treatment. In addition, bisdemethoxycurcumin induced mitochondrial biogenesis via transcriptional regulation of proliferator-activated receptor-gamma coactivator-1alpha pathway. In conclusion, our results demonstrated the potential of bisdemethoxycurcumin to attenuate small intestinal mitochondrial dysfunction, which might be mediated via activating the mitochondrial antioxidant system and mitochondrial biogenesis in LPS-treated broilers.
Collapse
|
24
|
Baghi M, Yadegari E, Rostamian Delavar M, Peymani M, Ganjalikhani‐Hakemi M, Salari M, Nasr‐Esfahani MH, Megraw TL, Ghaedi K. MiR-193b deregulation is associated with Parkinson's disease. J Cell Mol Med 2021; 25:6348-6360. [PMID: 34018309 PMCID: PMC8366452 DOI: 10.1111/jcmm.16612] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/12/2021] [Accepted: 04/28/2021] [Indexed: 02/05/2023] Open
Abstract
PGC-1α/FNDC5/BDNF has found to be a critical pathway in neurodegeneration. MicroRNAs (miR(NA)s) are non-coding regulatory RNAs whose dysregulation has been observed in multiple neurological disorders, and miRNA-mediated gene deregulation plays a decisive role in PD. Here, candidate miRNA was chosen based on the literature survey and in silico studies. Chronic and acute models of PD were created using MPP+-treated SH-SY5Y cells. Twenty PD patients and 20 healthy volunteers were recruited. RT-qPCR was performed to assess the expression of miRNA and genes. Severe mitochondrial dysfunction induced by acute MPP+ treatment instigated compensatory mechanisms through enhancing expression of PGC-1α/FNDC5/BDNF pathway genes, while chronic MPP+ toxicity led to down-regulated levels of the genes in SH-SY5Y cells. PD peripheral blood mononuclear cells (PBMCs) also showed decreased expression of target genes. There were significant changes in the level of miR-193b in both models, as well as PD PBMCs. Moreover, miR-193b overexpression significantly affected PGC-1α, FNDC5 and TFAM levels. Interestingly, down-regulations of PGC-1α, FNDC5, BDNF and TFAM were inversely correlated with miR-193b up-regulation in PD PBMCs. This study showed the deregulation of PGC-1α/FNDC5/BDNF pathway in PD models and PBMCs, verifying its importance in neurodegeneration. Our findings also revealed that miR-193b functions in PD development, possibly through regulating PGC-1α/FNDC5/BDNF pathway, suggesting miR-193b as a potential biomarker for PD diagnosis.
Collapse
Affiliation(s)
- Masoud Baghi
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
- Department of Animal BiotechnologyCell Science Research CenterRoyan Institute for BiotechnologyACECRIsfahanIran
| | - Elaheh Yadegari
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
| | - Mahsa Rostamian Delavar
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
| | - Maryam Peymani
- Department of BiologyFaculty of Basic SciencesShahrekord BranchIslamic Azad UniversityShahrekordIran
| | | | - Mehri Salari
- Functional Neurosurgery Research CenterShohada Tajrish Neurosurgical Center of ExcellenceShahid Beheshti University of Medical SciencesTehranIran
| | | | - Timothy L. Megraw
- Department of Biomedical SciencesFlorida State UniversityCollege of MedicineTallahasseeFLUSA
| | - Kamran Ghaedi
- Department of Cell and Molecular Biology and MicrobiologyFaculty of Biological Science and TechnologyUniversity of IsfahanIsfahanIran
| |
Collapse
|
25
|
Systematic review and meta-analysis on the role of mitochondrial cytochrome c oxidase in Alzheimer's disease. Acta Neuropsychiatr 2021; 33:55-64. [PMID: 33256871 DOI: 10.1017/neu.2020.43] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The present study was designed to test the hypothesis that there is a reduction in the activity of the enzyme cytochrome c oxidase (Cox) in Alzheimer's disease (AD). METHODS Systematic review of literature and meta-analysis were used with data obtained from the PubMed, Scopus, MEDLINE, Lilacs, Eric and Cochrane. The keywords were Alzheimer's AND Cox AND mitochondria; Alzheimer's AND Cox AND mitochondria; Alzheimer's AND complex IV AND mitochondria. A total of 1372 articles were found, 23 of them fitting the inclusion criteria. The data were assembled in an Excel spreadsheet and analysed using the RevMan software. A random effects model was adopted to the estimative of the effect. RESULTS The data shows a significant decrease in the activity of the Cox AD patients and animal models. CONCLUSION Cox enzyme may be an important molecular component involved in the mechanisms underlying AD. Therefore, this enzyme may represent a possible new biomarker for the disease as a complementary diagnosis and a new treatment target for AD.
Collapse
|
26
|
Yang Z, Rong Y, Cao Z, Wu Y, Zhao X, Xie Q, Luo M, Liu Y. Microstructural and Cerebral Blood Flow Abnormalities in Subjective Cognitive Decline Plus: Diffusional Kurtosis Imaging and Three-Dimensional Arterial Spin Labeling Study. Front Aging Neurosci 2021; 13:625843. [PMID: 33597860 PMCID: PMC7882515 DOI: 10.3389/fnagi.2021.625843] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/04/2021] [Indexed: 12/17/2022] Open
Abstract
Objective: To explore microstructural and cerebral blood flow (CBF) abnormalities in individuals with subjective cognitive decline plus (SCD plus) using diffusional kurtosis imaging (DKI) and three-dimensional (3D) arterial spin labeling (ASL). Methods: Twenty-seven patients with SCD plus, 31 patients with amnestic mild cognitive impairment (aMCI), and 33 elderly controls (ECs) were recruited and underwent DKI and 3D ASL using a GE 3.0-T MRI. Mean kurtosis (MK), fractional anisotropy (FA), mean diffusivity (MD), and CBF values were acquired from 24 regions of interest (ROIs) in the brain, including the bilateral hippocampal (Hip) subregions (head, body, and tail), posterior cingulate cortex (PCC), precuneus, dorsal thalamus subregions (anterior nucleus, ventrolateral nucleus, and medial nucleus), lenticular nucleus, caput nuclei caudati, white matter (WM) of the frontal lobe, and WM of the occipital lobe. Pearson's correlation analysis was performed to assess the relationships among the DKI-derived parameters, CBF values, and key neuropsychological tests for SCD plus. Results: Compared with ECs, participants with SCD plus showed a significant decline in MK and CBF values, mainly in the Hip head and PCC, and participants with aMCI exhibited more significant abnormalities in the MK and CBF values than individuals with ECs and SCD plus in multiple regions. Combined MK values showed better discrimination between patients with SCD plus and ECs than that obtained using CBF levels, with areas under the receiver operating characteristic (ROC) curve (AUC) of 0.874 and 0.837, respectively. Similarly, the AUC in discriminating SCD plus from aMCI patients obtained using combined MK values was 0.823, which was also higher than the combined AUC of 0.779 obtained using CBF values. Moreover, MK levels in the left Hip (h) and left PCC positively correlated with the auditory verbal learning test-delayed recall (AVLT-DR) score in participants with SCD plus. By contrast, only the CBF value in the left Hip head positively correlated with the AVLT-DR score. Conclusions: Our results provide new evidence of microstructural and CBF changes in patients with SCD plus. MK may be used as an early potential neuroimaging biomarker and may be a more sensitive DKI parameter than CBF at the very early stage of Alzheimer's disease (AD).
Collapse
Affiliation(s)
- Zhongxian Yang
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China.,Medical Imaging Center, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yu Rong
- Medical Imaging Center, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China.,Department of Neurology, The People's Hospital of Gaozhou City, Maoming, China
| | - Zhen Cao
- Medical Imaging Center, The Second Affiliated Hospital, Medical College of Shantou University, Shantou, China
| | - Yi Wu
- Department of Neurology, Shantou Central Hospital and Affiliated Shantou Hospital of Sun Yat-sen University, Shantou, China
| | - Xinzhu Zhao
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Qiuxia Xie
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Min Luo
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Yubao Liu
- Medical Imaging Center, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| |
Collapse
|
27
|
Yang SY, Castellani CA, Longchamps RJ, Pillalamarri VK, O'Rourke B, Guallar E, Arking DE. Blood-derived mitochondrial DNA copy number is associated with gene expression across multiple tissues and is predictive for incident neurodegenerative disease. Genome Res 2021; 31:349-358. [PMID: 33441415 PMCID: PMC7919448 DOI: 10.1101/gr.269381.120] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
Mitochondrial DNA copy number (mtDNA-CN) is a proxy for mitochondrial function and is associated with aging-related diseases. However, it is unclear how mtDNA-CN measured in blood can reflect diseases that primarily manifest in other tissues. Using the Genotype-Tissue Expression Project, we interrogated relationships between mtDNA-CN measured in whole blood and gene expression from whole blood and 47 additional tissues in 419 individuals. mtDNA-CN was significantly associated with expression of 700 genes in whole blood, including nuclear genes required for mtDNA replication. Significant enrichment was observed for splicing and ubiquitin-mediated proteolysis pathways, as well as target genes for the mitochondrial transcription factor NRF1. In nonblood tissues, there were more significantly associated genes than expected in 30 tissues, suggesting that global gene expression in those tissues is correlated with blood-derived mtDNA-CN. Neurodegenerative disease pathways were significantly associated in multiple tissues, and in an independent data set, the UK Biobank, we observed that higher mtDNA-CN was significantly associated with lower rates of both prevalent (OR = 0.89, CI = 0.83; 0.96) and incident neurodegenerative disease (HR = 0.95, 95% CI = 0.91;0.98). The observation that mtDNA-CN measured in blood is associated with gene expression in other tissues suggests that blood-derived mtDNA-CN can reflect metabolic health across multiple tissues. Identification of key pathways including splicing, RNA binding, and catalysis reinforces the importance of mitochondria in maintaining cellular homeostasis. Finally, validation of the role of mtDNA CN in neurodegenerative disease in a large independent cohort study solidifies the link between blood-derived mtDNA-CN, altered gene expression in multiple tissues, and aging-related disease.
Collapse
Affiliation(s)
- Stephanie Y Yang
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Christina A Castellani
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Ryan J Longchamps
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Vamsee K Pillalamarri
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Brian O'Rourke
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| | - Eliseo Guallar
- Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland 21205, USA
| | - Dan E Arking
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.,Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
| |
Collapse
|
28
|
Abdel-Rahman EA, Zaky EA, Aboulsaoud M, Elhossiny RM, Youssef WY, Mahmoud AM, Ali SS. Autism spectrum disorder (ASD)-associated mitochondrial deficits are revealed in children's platelets but unimproved by hyperbaric oxygen therapy. Free Radic Res 2021; 55:26-40. [PMID: 33402007 DOI: 10.1080/10715762.2020.1856376] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Mitochondrial and immune dysfunctions are often implicated in the aetiology of autism spectrum disorder (ASD). Here, we studied for the first time the relationship between ASD severity measures and mitochondrial respiratory rates in freshly isolated platelets as well as the activity of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) in isolated neutrophils. We also verified the impact of hyperbaric oxygen therapy (HBOT) on mitochondrial and immune functions as well as on ASD severity measures. Blood samples were collected from three age-matched male groups (Control (Norm-N), autistic (Aut-N), and autistic + HBOT (Aut-H); N = 10 per group). Using high resolution respirometry, we found that routine basal respiration, complex I- and complex I + II-dependent oxidative phosphorylation rate were significantly impaired in Aut-N platelets. Similarly, deficits in immune response of neutrophils were evidenced through lower rates of oxygen consumption and reactive oxygen species (ROS) production by phagocytic NOX. ASD-related behavioural outcomes were found to moderately correlate with platelets' mitochondrial bioenergetic parameters as well as with NOX-mediated activity in neutrophils. HBOT was not able to improve mitochondrial dysfunctions or to counteract ASD-related behavioral deficits. Although HBOT improved one measure of the immune response; namely, NOX-mediated superoxide burst, this was not associated with significant changes in trends of recurrent infections between groups. Taken together, our data suggest that ASD-associated mitochondria and immune deficits are detectable in platelets and neutrophils. We also found no evidence that HBOT confers any significant improvement of ASD-associated physiological or behavioural phenotypes.
Collapse
Affiliation(s)
- Engy A Abdel-Rahman
- Center for Aging and Associated Diseases, Helmy Institute of Medical Sciences, Zewail City of Science and Technology, Giza, Egypt.,Basic Research Department, Children's Cancer Hospital, Cairo, Egypt.,Department of Pharmacology, Faculty of Medicine, Assuit University, Assuit, Egypt
| | - Eman A Zaky
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mahmoud Aboulsaoud
- Center for Aging and Associated Diseases, Helmy Institute of Medical Sciences, Zewail City of Science and Technology, Giza, Egypt
| | - Reham M Elhossiny
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Walaa Y Youssef
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ali M Mahmoud
- Center for Aging and Associated Diseases, Helmy Institute of Medical Sciences, Zewail City of Science and Technology, Giza, Egypt
| | - Sameh S Ali
- Center for Aging and Associated Diseases, Helmy Institute of Medical Sciences, Zewail City of Science and Technology, Giza, Egypt.,Basic Research Department, Children's Cancer Hospital, Cairo, Egypt
| |
Collapse
|
29
|
Cognitive impairment is associated with mitochondrial dysfunction in peripheral blood mononuclear cells of elderly population. Sci Rep 2020; 10:21400. [PMID: 33293556 PMCID: PMC7723050 DOI: 10.1038/s41598-020-78551-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 11/18/2020] [Indexed: 01/06/2023] Open
Abstract
Cognitive impairment is commonly found in the elderly population. Evidence suggests that mitochondrial function in lymphocytes are potential biomarkers in the progression of neurodegeneration, as peripheral mitochondrial function is associated with mild cognitive impairment (MCI) in the elderly population. Therefore, we hypothesize that impaired mitochondrial ATP production and oxidative stress in peripheral blood mononuclear cells (PBMCs) are associated with cognitive impairment in the elderly population. Data were collected from 897 participants from the EGAT (The Electricity Generating Authority of Thailand) cohort. The participants were classified to be in the normal cognition group (n = 428) or mild cognitive impairment group (n = 469), according to their MoCA score. The association of mitochondrial function and cognitive status was analyzed by binary logistic regression analysis. MCI participants had higher age, systolic blood pressure, waist/hip ratio, and lower plasma high- and low-density lipoprotein cholesterol levels, when compared to the normal cognition group. In addition, estimated glomerular filtration rate were lower in the MCI group than those in the normal cognition group. Collectively, MCI is associated with mitochondrial dysfunction in PBMCs as indicated by decreasing mitochondrial ATP production, increasing proton leak, and oxidative stress, in the elderly population, independently of the possible confounding factors in this study.
Collapse
|
30
|
Pakpian N, Phopin K, Kitidee K, Govitrapong P, Wongchitrat P. Alterations in Mitochondrial Dynamic-related Genes in the Peripheral Blood of Alzheimer's Disease Patients. Curr Alzheimer Res 2020; 17:616-625. [PMID: 33023448 DOI: 10.2174/1567205017666201006162538] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/05/2020] [Accepted: 09/04/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Mitochondrial dysfunction is a pathological feature that manifests early in the brains of patients with Alzheimer's Disease (AD). The disruption of mitochondrial dynamics contributes to mitochondrial morphological and functional impairments. Our previous study demonstrated that the expression of genes involved in amyloid beta generation was altered in the peripheral blood of AD patients. OBJECTIVE The aim of this study was to further investigate the relative levels of mitochondrial genes involved in mitochondrial dynamics, including mitochondrial fission and fusion, and mitophagy in peripheral blood samples from patients with AD compared to healthy controls. METHODS The mRNA levels were analyzed by real-time polymerase chain reaction. Gene expression profiles were assessed in relation to cognitive performance. RESULTS Significant changes were observed in the mRNA expression levels of fission-related genes; Fission1 (FIS1) levels in AD subjects were significantly higher than those in healthy controls, whereas Dynamin- related protein 1 (DRP1) expression was significantly lower in AD subjects. The levels of the mitophagy-related genes, PTEN-induced kinase 1 (PINK1) and microtubule-associated protein 1 light chain 3 (LC3), were significantly increased in AD subjects and elderly controls compared to healthy young controls. The mRNA levels of Parkin (PARK2) were significantly decreased in AD. Correlations were found between the expression levels of FIS1, DRP1 and PARK2 and cognitive performance scores. CONCLUSION Alterations in mitochondrial dynamics in the blood may reflect impairments in mitochondrial functions in the central and peripheral tissues of AD patients. Mitochondrial fission, together with mitophagy gene profiles, might be potential considerations for the future development of blood-based biomarkers for AD.
Collapse
Affiliation(s)
- Nattaporn Pakpian
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Kamonrat Phopin
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Kuntida Kitidee
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | | | - Prapimpun Wongchitrat
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Salaya, Nakhon Pathom, Thailand
| |
Collapse
|
31
|
Abate G, Vezzoli M, Sandri M, Rungratanawanich W, Memo M, Uberti D. Mitochondria and cellular redox state on the route from ageing to Alzheimer's disease. Mech Ageing Dev 2020; 192:111385. [PMID: 33129798 DOI: 10.1016/j.mad.2020.111385] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/05/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Several theories have been postulated, trying to explain why and how living organisms age. Despite some controversies and still huge open questions, a growing body of evidence suggest alterations of mitochondrial functionality and redox-homeostasis occur during the ageing process. Oxidative damage and mitochondrial dysfunction do not represent the cause of ageing per se but they have to be analyzed within the complexity of those series of processes occurring during lifespan. The establishment of a crosstalk among them is a shared common feature of many chronic age-related diseases, including neurodegenerative disorders, for which ageing is a major risk factor. The challenge is to understand when and how the interplay between these two systems move towards from normal ageing process to a pathological phenotype. Here in this review, we discuss the crosstalk between mitochondria and cytosolic-ROS. Furthermore, through a visual data mining approach, we attempt to describe the dynamic interplay between mitochondria and cellular redox state on the route from ageing to an AD phenotype.
Collapse
Affiliation(s)
- G Abate
- Department of Molecular and Translational Medicine, University of Brescia, Italy.
| | - M Vezzoli
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - M Sandri
- Big & Open Data Innovation Laboratory (BODaI-Lab), Department of Economics and Management, University of Brescia, Italy
| | - W Rungratanawanich
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - M Memo
- Department of Molecular and Translational Medicine, University of Brescia, Italy
| | - D Uberti
- Department of Molecular and Translational Medicine, University of Brescia, Italy; Molecular Markers Laboratory, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| |
Collapse
|
32
|
Lv X, Zhou D, Ge B, Chen H, Du Y, Liu S, Ji Y, Sun C, Wang G, Gao Y, Li W, Huang G. Association of Folate Metabolites and Mitochondrial Function in Peripheral Blood Cells in Alzheimer's Disease: A Matched Case-Control Study. J Alzheimers Dis 2020; 70:1133-1142. [PMID: 31306134 DOI: 10.3233/jad-190477] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The nutrition state plays an important role in the progress of aging. Folate may play a role in protecting mitochondrial (mt) DNA by reducing oxidative stress. OBJECTIVE The primary aim of this study was to examine the association of mitochondrial oxidative damage with risk of Alzheimer's disease (AD), and to explore the possible role of folate metabolites in this association in a matched case-control study. METHODS Serum folate metabolites and mitochondrial function in peripheral blood cells were determined in 82 AD cases and 82 healthy controls, individually matched by age, gender, and education. RESULTS AD patients had lower serum levels of folate and higher homocysteine (Hcy) concentration. AD patients had a reduced mtDNA copy number, higher mtDNA deletions, and increased 8-OHdG content in mtDNA indicative of reduced mitochondrial function. The highest level of mtDNA copy number would decrease the risk of AD (OR = 0.157, 95% CI: 0.058-0.422) compared to the lowest level, independently of serum folate, and Hcy levels. Serum folate levels correlated with low 8-OHdG content in mtDNA both in AD patients and controls, independently of serum Hcy level. Moreover, serum Hcy levels correlated with low copy number in mtDNA both in AD patients and controls, independently of serum folate levels. CONCLUSION In conclusion, mitochondrial function in peripheral blood cells could be associated with risk of AD independent of multiple covariates. AD patients with a folate deficiency or hyperhomocysteinemia had low mitochondrial function in peripheral blood cells. However, further randomized controlled trials are need to determine a causal effect.
Collapse
Affiliation(s)
- Xin Lv
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Dongtao Zhou
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Baojin Ge
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Hui Chen
- School of Nursing, Tianjin Medical University, Tianjin, China
| | - Yue Du
- Department of Social Medicine and Health Management, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shuai Liu
- Department of Neurology, and Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Yong Ji
- Department of Neurology, and Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Changqing Sun
- Neurosurgical Department of Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Guangshun Wang
- Department of Tumor, Baodi Clinical College of Tianjin Medical University, Tianjin, China
| | - Yuxia Gao
- Department of Cardiology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Wen Li
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| | - Guowei Huang
- Department of Nutrition and Food Science, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
| |
Collapse
|
33
|
Mitochondrial biogenesis in organismal senescence and neurodegeneration. Mech Ageing Dev 2020; 191:111345. [DOI: 10.1016/j.mad.2020.111345] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/17/2020] [Accepted: 08/27/2020] [Indexed: 12/19/2022]
|
34
|
Xu L, Yang Y, Chen J. The role of reactive oxygen species in cognitive impairment associated with sleep apnea. Exp Ther Med 2020; 20:4. [PMID: 32934669 PMCID: PMC7471880 DOI: 10.3892/etm.2020.9132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 02/07/2020] [Indexed: 02/07/2023] Open
Abstract
Obstructive sleep apnea (OSA), a common breathing and sleeping disorder, is associated with a broad range of neurocognitive difficulties. Intermittent hypoxia (IH), one major characteristic of OSA, has been shown to impair learning and memory due to increased levels of reactive oxygen species (ROS). Under normal conditions, ROS are produced in low concentrations and act as signaling molecules in different processes. However, IH treatment leads to elevated ROS production via multiple pathways, including mitochondrial electron transport chain dysfunction and in particular complex I dysfunction, and induces oxidative tissue damage. Moreover, elevated ROS results in the accumulation of unfolded or misfolded proteins in the endoplasmic reticulum (ER) and increased activity of peroxisomes, such as NADPH oxidase, xanthine oxidase and phospholipase A2. Furthermore, oxidative tissue damage has been found in regions of the brains of patients with OSA, including the cortex and hippocampus, which are associated with memory and executive function. Furthermore, increased ROS levels in these regions of the brain induce damage via inflammation, apoptosis, ER stress and neuronal activity disturbance. The present review focuses on the mechanism of excessive ROS production in an OSA model and the relationship between ROS and cognitive impairment.
Collapse
Affiliation(s)
- Linhao Xu
- Department of Cardiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China.,Department of Pathology, School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, P.R. China.,Translational Medicine Research Center, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Yibo Yang
- College of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 201424, P.R. China
| | - Jian Chen
- Department of Pathology, School of Basic Medical Sciences and Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang 310053, P.R. China
| |
Collapse
|
35
|
Hsieh AY, Kimmel E, Pick N, Sauvé L, Brophy J, Kakkar F, Bitnun A, Murray MC, Côté HC. Inverse relationship between leukocyte telomere length attrition and blood mitochondrial DNA content loss over time. Aging (Albany NY) 2020; 12:15196-15221. [PMID: 32703912 PMCID: PMC7467389 DOI: 10.18632/aging.103703] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 07/06/2020] [Indexed: 05/16/2023]
Abstract
Leukocyte telomere length (LTL) and whole blood mitochondrial DNA (WB mtDNA) content are aging markers impacted by chronic diseases such as human immunodeficiency virus (HIV) infection. We characterized the relationship between these two markers in 312 women ≥12 years of age living with HIV and 300 HIV-negative controls. We found no relationship between the two markers cross-sectionally. In multivariable models, age, ethnicity, HIV, and tobacco smoking were independently associated with shorter LTL, and the former three with lower WB mtDNA. Longitudinally, among a subgroup of 228 HIV participants and 68 HIV-negative controls with ≥2 biospecimens ≥1 year apart, an inverted pattern was observed between the rates of change in LTL and WB mtDNA content per year, whereby faster decline of one was associated with the preservation of the other. Furthermore, if HIV viral control was not maintained between visits, increased rates of both LTL attrition and WB mtDNA loss were observed. We describe a novel relationship between two established aging markers, whereby rates of change in LTL and WB mtDNA are inversely related. Our findings highlight the importance of maintaining HIV viral control, the complementary longitudinal relationship between the two markers, and the need to consider both in aging studies.
Collapse
Affiliation(s)
- Anthony Y.Y. Hsieh
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Elana Kimmel
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Neora Pick
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver V5Z 1M9, British Columbia, Canada
| | - Laura Sauvé
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Pediatrics, University of British Columbia, Vancouver V6H 0B3, British Columbia, Canada
| | - Jason Brophy
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa K1H 8L1, Ontario, Canada
| | - Fatima Kakkar
- Department of Pediatrics, Centre Hospitalier Universtaire Sainte-Justine, Université de Montréal, Montréal H3T 1C5, Quebec, Canada
| | - Ari Bitnun
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto M5G 1X8, Ontario, Canada
| | - Melanie C.M. Murray
- Oak Tree Clinic, BC Women's Hospital, Vancouver V6H 3N1, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
- Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver V5Z 1M9, British Columbia, Canada
| | - Hélène C.F. Côté
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver V6T 2B5, British Columbia, Canada
- Centre for Blood Research, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Women's Health Research Institute, Vancouver V6H 2N9, British Columbia, Canada
| |
Collapse
|
36
|
Shevtsova EF, Maltsev AV, Vinogradova DV, Shevtsov PN, Bachurin SO. Mitochondria as a promising target for developing novel agents for treating Alzheimer's disease. Med Res Rev 2020; 41:803-827. [PMID: 32687230 DOI: 10.1002/med.21715] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 12/13/2022]
Abstract
The mitochondria-targeting drugs can be conventionally divided into the following groups: those compensating for the energy deficit involved in neurodegeneration, including stimulants of mitochondrial bioenergetics and activators of mitochondrial biogenesis; and neuroprotectors, that are compounds increasing the resistance of mitochondria to opening of mitochondrial permeability transition (MPT) pores. Although compensating for the energy deficit and inhibition of MPT are obvious targets for drugs used in the very early stages of Alzheimer-like pathology, but their use as the monotherapy for patients with severe symptoms is unlikely to be sufficiently effective. It would be optimal to combine targets that would provide the cognitive-stimulating, the neuroprotective effects and the ability to affect specific disease-forming mechanisms. In the design of such drugs, assessment of their potential mitochondrial-targeted effects is of particular importance. The possibility of targeted drug design for simultaneous action on mitochondrial and neurotransmitter's receptors targets is, in particularly, based on the known interplay of various cellular pathways and the presence of common structural components. Of particular interest is directed search for multitarget drugs that would act simultaneously on mitochondrial calcium-dependent functions, the targets (receptors, enzymes, etc.) facilitating neurotransmission, and the molecular targets related to the action of so-called disease-modifying factors, in particular, the formation and overcoming of the toxicity of β-amyloid or hyperphosphorylated tau protein. The examples of such approaches realized on the level of preclinical and clinical trials are presented below.
Collapse
Affiliation(s)
- Elena F Shevtsova
- Department of Medicinal and Biological Chemistry, Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
| | - Andrey V Maltsev
- Department of Medicinal and Biological Chemistry, Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
| | - Darya V Vinogradova
- Department of Medicinal and Biological Chemistry, Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
| | - Pavel N Shevtsov
- Department of Medicinal and Biological Chemistry, Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
| | - Sergey O Bachurin
- Department of Medicinal and Biological Chemistry, Institute of Physiologically Active Compounds Russian Academy of Sciences, Chernogolovka, Moscow Region, Russia
| |
Collapse
|
37
|
Eser Faki H, Tras B, Uney K. Alpha lipoic acid and vitamin E improve atorvastatin-induced mitochondrial dysfunctions in rats. Mitochondrion 2020; 52:83-88. [PMID: 32119925 DOI: 10.1016/j.mito.2020.02.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/12/2019] [Accepted: 02/27/2020] [Indexed: 01/01/2023]
Abstract
To determine the effects of alpha lipoic acid (ALA) and vitamin E (Vit E) on mitochondrial dysfunction caused by statins. A total of 38 Wistar Albino rats were used in this study. The control group received dimethyl sulfoxide. The atorvastatin (A) group received atorvastatin (10 mg/kg). The A + ALA group received atorvastatin (10 mg/kg) and ALA (100 mg/kg). The A + Vit E group was administered atorvastatin (10 mg/kg) and Vit E (100 mg/kg). The A + ALA + Vit E group was administered atorvastatin (10 mg/kg), ALA (100 mg/kg) and Vit E (100 mg/kg). All applications were administered simultaneously by gavage for 20 days. ATP level and complex I activity were measured from liver, muscle, heart, kidney and brain. Atorvastatin significantly decreased the ATP levels in heart and kidney, while a slight decrease was seen in liver, muscle and brain. Atorvastatin caused an insignificant decrease in the complex I activity in all tissues examined. ALA administration significantly improved the ATP levels in the liver, heart and kidney, while Vit E improved the ATP levels in all tissues except the muscle compared to Atorvastatin group. Single administration of both ALA and vit E ameliorated complex I activity in the muscle, heart, kidney and brain. The combination of ALA and Vit E significantly improved the ATP levels in the liver, heart, kidney and brain and also provided significant improvements the complex I activity in all tissues. The undesirable effects of Atorvastatin on mitochondrial functions in this study ameliorated by using ALA and/or Vit E alone and in combination.
Collapse
Affiliation(s)
- Hatice Eser Faki
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, 42031 Konya, Turkey.
| | - Bunyamin Tras
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, 42031 Konya, Turkey
| | - Kamil Uney
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Selcuk, 42031 Konya, Turkey
| |
Collapse
|
38
|
Czarny P, Wigner P, Strycharz J, Swiderska E, Synowiec E, Szatkowska M, Sliwinska A, Talarowska M, Szemraj J, Su KP, Maes M, Sliwinski T, Galecki P. Mitochondrial DNA copy number, damage, repair and degradation in depressive disorder. World J Biol Psychiatry 2020; 21:91-101. [PMID: 31081430 DOI: 10.1080/15622975.2019.1588993] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objectives: We aimed to explore mitochondrial DNA (mtDNA) copy number, damage, repair and degradation in peripheral blood mononuclear cells (PBMCs) of patients with depression and to compare the results with healthy subjects.Methods: Total genomic DNA was isolated from PBMCs of 25 depressed and 60 healthy subjects before, immediately after, and 3 h after the exposure to H2O2. Evaluation of mtDNA copy number was performed using real-time PCR and 2-ΔCt methods. Semi-long run real-time PCR was used to estimate the number of mtDNA lesions.Results: Baseline mtDNA copy number did not differ in cells of healthy and depressed subjects; however, it was negatively correlated with the severity of the episode. After a 10-min challenge with hydrogen peroxide (H2O2), depressed patients' PBMCs exhibited slower changes of the copy number, indicating a lower efficiency of mtDNA degradation compared to controls. Moreover, a significantly higher number of mtDNA lesions was found in depressed patients at the baseline as well as at other experimental time points. mtDNA lesions were also elevated in depressed patient cells immediately after H2O2 exposure. Induction of oxidative stress had no significant influence on the cells of controls.Conclusions: We are the first to show that impairment in repair and degradation of mtDNA may be involved in the pathophysiology of depression.
Collapse
Affiliation(s)
- Piotr Czarny
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Paulina Wigner
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Justyna Strycharz
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Ewa Swiderska
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Ewelina Synowiec
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Magdalena Szatkowska
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Agnieszka Sliwinska
- Department of Nucleic Acids Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Monika Talarowska
- Department of Adult Psychiatry, Medical University of Lodz, Lodz, Poland
| | - Janusz Szemraj
- Department of Medical Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Kuan-Pin Su
- Department of Psychiatry and Mind-Body Interface Laboratory (MBI-Lab), China Medical University Hospital, Taichung, Taiwan
| | - Michael Maes
- School of Medicine, Barwon Health, IMPACT Strategic Research Centre Deakin University, Geelong, Australia.,Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand.,Health Sciences Graduate Program Health Sciences Center, State University of Londrina, Londrina, Brazil
| | - Tomasz Sliwinski
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland
| | - Piotr Galecki
- Department of Adult Psychiatry, Medical University of Lodz, Lodz, Poland
| |
Collapse
|
39
|
Ton AMM, Campagnaro BP, Alves GA, Aires R, Côco LZ, Arpini CM, Guerra e Oliveira T, Campos-Toimil M, Meyrelles SS, Pereira TMC, Vasquez EC. Oxidative Stress and Dementia in Alzheimer's Patients: Effects of Synbiotic Supplementation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2638703. [PMID: 32411323 PMCID: PMC7201593 DOI: 10.1155/2020/2638703] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 10/08/2019] [Accepted: 10/18/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is the most common cause of dementia in elderly patients. Recently, several studies have shown that inflammation and oxidative stress precede the cardinal neuropathological manifestations of AD. In view of the proven antioxidant effects of probiotics, we proposed that continuous dietary supplementation with milk fermented with kefir grains might improve cognitive and metabolic and/or cellular disorders in the AD patients. METHODS This study was designed as an uncontrolled clinical investigation to test the effects of probiotic-fermented milk supplementation (2 mL/kg/daily) for 90 days in AD patients exhibiting cognitive deficit. Cognitive assessment, cytokine expression, systemic oxidative stress levels, and blood cell damage biomarkers were evaluated before (T0) and after (T90) kefir synbiotic supplementation. RESULTS When the patients were challenged to solve 8 classical tests, the majority exhibit a marked improvement in memory, visual-spatial/abstraction abilities, and executive/language functions. At the end of the treatment, the cytometric analysis showed an absolute/relative decrease in several cytokine markers of inflammation and oxidative stress markers (·O2 -, H2O2, and ONOO-, ~30%) accompanied by an increase in NO bioavailability (100%). In agreement with the above findings by using the same technique, we observed in a similar magnitude an improvement of serum protein oxidation, mitochondrial dysfunction, DNA damage/repair, and apoptosis. CONCLUSION In conclusion, we demonstrated that kefir improves cognitive deficits, which seems to be linked with three important factors of the AD-systemic inflammation, oxidative stress, and blood cell damage-and may be a promising adjuvant therapy against the AD progression.
Collapse
Affiliation(s)
- Alyne Mendonça Marques Ton
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Bianca Prandi Campagnaro
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Gisela Aleixo Alves
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Rafaela Aires
- Laboratory of Translational Physiology, Physiological Sciences Graduate Program, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Larissa Zambom Côco
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Clarisse Maximo Arpini
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Trícia Guerra e Oliveira
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
| | - Manuel Campos-Toimil
- Pharmacology of Chronic Diseases (CDPHARMA), Molecular Medicine and Chronic Diseases Research Centre (CIMUS), University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Silvana Santos Meyrelles
- Laboratory of Translational Physiology, Physiological Sciences Graduate Program, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Thiago Melo Costa Pereira
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
- Federal Institute of Education, Science and Technology (IFES), Vila Velha, Espírito Santo, Brazil
| | - Elisardo Corral Vasquez
- Laboratory of Translational Physiology and Pharmacology, Pharmaceutical Sciences Graduate Program, Vila Velha University, Vila Velha, Espírito Santo, Brazil
- Laboratory of Translational Physiology, Physiological Sciences Graduate Program, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| |
Collapse
|
40
|
Baghi M, Rostamian Delavar M, Yadegari E, Peymani M, Pozo D, Hossein Nasr-Esfahani M, Ghaedi K. Modified level of miR-376a is associated with Parkinson's disease. J Cell Mol Med 2020; 24:2622-2634. [PMID: 31930701 PMCID: PMC7028860 DOI: 10.1111/jcmm.14979] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 11/02/2019] [Accepted: 12/16/2019] [Indexed: 12/02/2022] Open
Abstract
Parkinson's disease (PD) is a frequent progressive neurodegenerative disorder. Impaired mitochondrial function is a major feature of sporadic PD. Some susceptibility or causative genes detected in PD are strongly associated with mitochondrial dysfunction including PGC1α, TFAM and GSK3β. microRNAs (miRNAs) are non‐coding RNAs whose altered levels are proven in disparate PD models and human brains. Therefore, the aim of this study was to detect modulations of miRs upstream of PGC1α, TFAM and GSK3β in association with PD onset and progress. In this study, a total of 33 PD subjects and 25 healthy volunteers were recruited. Candidate miRNA (miR‐376a) was selected through target prediction tools and literature survey. Chronic and acute in vitro PD models were created by MPP+‐intoxicated SHSY5Y cells. The levels of miR‐376a and aforementioned genes were assessed by RT‐qPCR. The expression of target genes was decreased in chronic model while there were dramatically up‐regulated levels of those genes in acute model of PD. miR‐376a was strongly altered in both acute and chronic PD models as well as PBMCs of PD patients. Our results also showed overexpression of PGC1α, and TFAM in PBMCs is inversely correlated with down‐regulation of miR‐376a, suggesting that miR‐376a possibly has an impact on PD pathogenesis through regulation of these genes which are involved in mitochondrial function. miR‐376a expression in PD‐derived PBMCs was also correlated with disease severity and may serve as a potential biomarker for PD diagnosis. This is the first study showing altered levels of miR‐376a in PD models and PBMCs, suggesting the probable role of this miRNA in PD pathogenesis. The present study also proposed TFAM and PGC1α as target genes of miR‐376a for the first time, through which it possibly can exert its impact on PD pathogenesis.
Collapse
Affiliation(s)
- Masoud Baghi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
| | - Mahsa Rostamian Delavar
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
| | - Elaheh Yadegari
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Maryam Peymani
- Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran.,Department of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - David Pozo
- CABIMER, Andalusian Center for Molecular Biology and Regenerative Medicine, Sevilla, Spain.,Department of Medical Biochemistry, Molecular Biology and Immunology, Universidad de Sevilla, Sevilla, Spain
| | | | - Kamran Ghaedi
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.,Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, Isfahan, Iran
| |
Collapse
|
41
|
Mitochondrial DNA Copy Number in Peripheral Blood as a Potential Non-invasive Biomarker for Multiple Sclerosis. Neuromolecular Med 2020; 22:304-313. [PMID: 31902116 DOI: 10.1007/s12017-019-08588-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 12/25/2019] [Indexed: 12/11/2022]
Abstract
The impaired mitochondrial function has been implicated in the pathogenicity of multiple sclerosis (MS), a chronic inflammatory, demyelinating, and neurodegenerative disease of the CNS. Circulating mtDNA copy number in body fluids has been proposed as an indicator for several neurodegenerative diseases, and the altered cerebrospinal fluid mtDNA has been shown as a promising marker for MS. The aim of this study was to determine changes and biomarker potential of circulating mtDNA in peripheral blood in MS. The mtDNA copy number was quantified by real-time PCR in blood samples from 60 patients with relapsing-remitting MS (RRMS) and 64 healthy controls. The RRMS patients had significantly lower circulating mtDNA copy number compared to controls. Subgroup analysis with stratification of RRMS patients based on disease duration under or over 10 years revealed that the mtDNA copy number was significantly lower in the group with longer disease duration. A negative correlation was observed between mtDNA copy number and disease duration. The ROC curve analysis indicated a significant ability of mtDNA copy number to separate RRMS patients from controls with an AUC of 0.859. This is the first study to measure peripheral blood mtDNA copy number in MS patients. Current data suggest that the reduction in peripheral blood mtDNA copy number may be an early event in MS and correlate with the disease progression. The findings of this study indicate that circulating blood-based mtDNA copy number may be a potential non-invasive candidate biomarker for mitochondria-mediated neurodegeneration and MS. This can put forward the clinical applicability over other invasive markers.
Collapse
|
42
|
Meta-Analysis of Gene Expression Changes in the Blood of Patients with Mild Cognitive Impairment and Alzheimer's Disease Dementia. Int J Mol Sci 2019; 20:ijms20215403. [PMID: 31671574 PMCID: PMC6862214 DOI: 10.3390/ijms20215403] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 12/11/2022] Open
Abstract
Background: Dementia is a major public health concern affecting approximately 47 million people worldwide. Mild cognitive impairment (MCI) is one form of dementia that affects an individual’s memory with or without affecting their daily life. Alzheimer’s disease dementia (ADD) is a more severe form of dementia that usually affects elderly individuals. It remains unclear whether MCI is a distinct disorder from or an early stage of ADD. Methods: Gene expression data from blood were analyzed to identify potential biomarkers that may be useful for distinguishing between these two forms of dementia. Results: A meta-analysis revealed 91 genes dysregulated in individuals with MCI and 387 genes dysregulated in ADD. Pathway analysis identified seven pathways shared between MCI and ADD and nine ADD-specific pathways. Fifteen transcription factors were associated with MCI and ADD, whereas seven transcription factors were specific for ADD. Mir-335-5p was specific for ADD, suggesting that it may be useful as a biomarker. Diseases that are associated with MCI and ADD included developmental delays, cognition impairment, and movement disorders. Conclusion: These results provide a better molecular understanding of peripheral changes that occur in MCI and ADD patients and may be useful in the identification of diagnostic and prognostic biomarkers.
Collapse
|
43
|
Wang Y, Zhang M, Li Z, Yue J, Xu M, Zhang Y, Yung KKL, Li R. Fine particulate matter induces mitochondrial dysfunction and oxidative stress in human SH-SY5Y cells. CHEMOSPHERE 2019; 218:577-588. [PMID: 30502696 DOI: 10.1016/j.chemosphere.2018.11.149] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/28/2018] [Accepted: 11/23/2018] [Indexed: 05/06/2023]
Abstract
Exposure to ambient fine particulate matter (PM2.5) is associated with neurodegenerative diseases. Mitochondrion is key to brain degeneration. However, the underlying mechanism of PM2.5-induced brain injury, especially mitochondrial damage, is still unclear. In this study, changes in mitochondrial dynamics, mitochondrial permeability transition pore (mPTP), mitochondrial DNA (mtDNA) and oxidative stress in human SH-SY5Y cells exposed to PM2.5 at different concentrations (0, 25, 100, and 250 μg mL-1) were investigated. The results showed that PM2.5 caused more mitochondrial swell, accompanied by the opening of mPTP and the decrease of ATP levels, mitochondrial membrane potential and mtDNA copy number in SH-SY5Y cells. PM2.5 significantly enhanced the expression of mitochondrial fission/fusion genes (Drp1 and OPA1) and affected the gene expression of CypD, SIRT3, and COX Ⅳ in SH-SY5Y cells. Besides, PM2.5 triggered the increase of cellular ROS, Ca2+ and Aβ-42 levels, inhibition of manganese-superoxide dismutase (SOD2) activities, reduction of GSH levels GSH/GSSG ratio, and elevation of mitochondrial malondialdehyde contents. It suggests that mitochondrial dysfunction and oxidative stress are the potential mechanisms underlying PM2.5-induced brain nerve cell injury, which may be related to neurological diseases. Additionally, our study elucidated that PM2.5 components trigger different cytotoxicity.
Collapse
Affiliation(s)
- Ying Wang
- Institute of Environmental Science, Shanxi University, Taiyuan, China
| | - Mei Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan, China
| | - Zhiping Li
- Shanxi Unisdom Testing Technologies Co., Ltd, Taiyuan, China
| | - Jianwei Yue
- Shanxi Unisdom Testing Technologies Co., Ltd, Taiyuan, China
| | - Min Xu
- Shanxi Unisdom Testing Technologies Co., Ltd, Taiyuan, China
| | - Yanhao Zhang
- Department of Biology, State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong SAR, China
| | - Ken Kin Lam Yung
- Institute of Environmental Science, Shanxi University, Taiyuan, China; Department of Biology, State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong SAR, China.
| | - Ruijin Li
- Institute of Environmental Science, Shanxi University, Taiyuan, China.
| |
Collapse
|
44
|
Mise A, Yoshino Y, Yamazaki K, Ozaki Y, Sao T, Yoshida T, Mori T, Mori Y, Ochi S, Iga JI, Ueno SI. TOMM40 and APOE Gene Expression and Cognitive Decline in Japanese Alzheimer's Disease Subjects. J Alzheimers Dis 2018; 60:1107-1117. [PMID: 28984592 DOI: 10.3233/jad-170361] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND TOMM40 is located on chromosome 19, is in linkage disequilibrium with apolipoprotein E (APOE), andis reported in several genome-wide association studies to be associated with Alzheimer's disease (AD). OBJECTIVE Assess APOE and TOM40 and mitochondrial genes as blood biomarkers for AD. METHODS We examined TOMM40, PTEN-induced putative kinase 1 (PINK1), Parkin RBR E3 ubiquitin protein ligase (PARK2), and APOE mRNA expression in relation to the methylation rates of CpG sites in the upstream region of TOMM40exon 1 in peripheral leukocytes and TOMM40523 polyT genotypes in 60 AD and age- and sex-matched control subjects. RESULTS TOMM40 mRNA expression was significantly lower in AD subjects (0.87±0.18 versus 1.0±0.23, p = 0.005), and PINK1 mRNA expression was higher in AD subjects (1.5±0.61 versus 1.0±0.52, p < 0.001). TOMM40 mRNA expression was significantly correlated with the Mini-Mental State Examination total score (r = 0.290, p = 0.027). There was no expressional change in peripheral APOE mRNA in either AD or control subjects (p = 0.32). Methylation rates in the upstream region of TOMM40exon 1 were not different between AD and control subjects (average rate: 1.37±0.99 versus 1.39±1.20, p = 0.885), and TOMM40523 polyT genotypes were also not different between AD and control subjects (p = 0.67). CONCLUSION TOMM40 mRNA expression was lower in AD subjects and was correlated with cognitive decline. Significant changes in both TOMM40 and PINK1 mRNA may be related to mitochondrial dysfunction.
Collapse
Affiliation(s)
- Ayano Mise
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Yuta Yoshino
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Kiyohiro Yamazaki
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Yuki Ozaki
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Tomoko Sao
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Taku Yoshida
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Takaaki Mori
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Yoko Mori
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Shinichiro Ochi
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Jun-Ichi Iga
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Shu-Ichi Ueno
- Department of Neuropsychiatry, Molecules and Function, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| |
Collapse
|
45
|
Chae JW, Chua PS, Ng T, Yeo AHL, Shwe M, Gan YX, Dorajoo S, Foo KM, Loh KWJ, Koo SL, Chay WY, Tan TJY, Beh SY, Lim EH, Lee GE, Dent R, Yap YS, Ng R, Ho HK, Chan A. Association of mitochondrial DNA content in peripheral blood with cancer-related fatigue and chemotherapy-related cognitive impairment in early-stage breast cancer patients: a prospective cohort study. Breast Cancer Res Treat 2018; 168:713-721. [DOI: 10.1007/s10549-017-4640-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 12/23/2017] [Indexed: 12/24/2022]
|
46
|
Chae JW, Ng T, Yeo HL, Shwe M, Gan YX, Ho HK, Chan A. Impact of TNF-α (rs1800629) and IL-6 (rs1800795) Polymorphisms on Cognitive Impairment in Asian Breast Cancer Patients. PLoS One 2016; 11:e0164204. [PMID: 27701469 PMCID: PMC5049844 DOI: 10.1371/journal.pone.0164204] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/21/2016] [Indexed: 12/25/2022] Open
Abstract
Objective Expression of pro-inflammatory cytokines is influenced by single nucleotide polymorphisms (SNPs) in the promoter regions of the pro-inflammatory cytokine genes, and cytokines are associated with the occurrence of post-chemotherapy cognitive impairment. Hence, the aim of this study was to evaluate the associations between two common pro-inflammatory cytokine gene polymorphisms namely, IL6-174 (rs1800795 G>C) and TNF-308 (rs1800629 G>A), and chemotherapy-associated cognitive impairment (CACI) among Asian early-stage breast cancer patients. In addition, the differential effect of these SNPs on plasma IL-6 and TNF-α levels, and the associations of plasma IL-6 and TNF-α levels with CACI were also assessed. Methods Asian early-stage breast cancer patients (Stage I to III) receiving chemotherapy were prospectively recruited from two cancer centers in Singapore. Patients' cognitive function was longitudinally assessed using the validated FACT-Cog (ver. 3) and an objective computerized battery, Headminder™ at three-time points. Plasma IL-6 and TNF-α levels were analyzed using the multiplex immunoassay, and genotyping was performed using Sanger sequencing. Regression analyses and generalized estimating equation were utilized for statistical analysis. Results A total of 125 patients were included (mean age: 50.3; Chinese: 80.8%; post-menopausal: 48.0%; 68.0% received anthracycline-based chemotherapy). 36.8% patients experienced self-perceived cognitive impairment, detected in memory (32.8%) and attention (34.2%) domains. Patients with higher levels of anxiety (p<0.001) and insomnia (p = 0.003) also reported more self-perceived cognitive impairment. Higher plasma concentrations of IL-6 were associated with greater severity of self-perceived cognitive impairment (p = 0.001). Polymorphisms of cytokine genes were not associated with expression of plasma cytokines. Conclusion Present findings further contribute to the growing evidence that supports the role of the pro-inflammatory cytokine IL-6 in the occurrence of cognitive impairment post-chemotherapy. However, genetic polymorphism of these cytokines did not play a major role to the cytokine fluctuations as well as cognitive impairment in this cohort. With an increasing evidence to support the cytokine hypothesis, future studies should investigate the role of anti-inflammatory agents in mitigating the cognitive impairment associated with chemotherapy.
Collapse
Affiliation(s)
- Jung-woo Chae
- Department of Pharmacy, National University of Singapore, Singapore
| | - Terence Ng
- Department of Pharmacy, National University of Singapore, Singapore
| | - Hui Ling Yeo
- Department of Pharmacy, National University of Singapore, Singapore
| | - Maung Shwe
- Department of Pharmacy, National University of Singapore, Singapore
| | - Yan Xiang Gan
- Department of Pharmacy, National Cancer Centre Singapore, Singapore
| | - Han Kiat Ho
- Department of Pharmacy, National University of Singapore, Singapore
| | - Alexandre Chan
- Department of Pharmacy, National University of Singapore, Singapore
- Department of Pharmacy, National Cancer Centre Singapore, Singapore
- Duke-NUS Graduate Medical School Singapore, Singapore
- * E-mail:
| |
Collapse
|