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Sleigh JN, Mattedi F, Richter S, Annuario E, Ng K, Steinmark IE, Ivanova I, Darabán IL, Joshi PP, Rhymes ER, Awale S, Yahioglu G, Mitchell JC, Suhling K, Schiavo G, Vagnoni A. Age-specific and compartment-dependent changes in mitochondrial homeostasis and cytoplasmic viscosity in mouse peripheral neurons. Aging Cell 2024:e14250. [PMID: 38881280 DOI: 10.1111/acel.14250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 04/26/2024] [Accepted: 05/20/2024] [Indexed: 06/18/2024] Open
Abstract
Mitochondria are dynamic bioenergetic hubs that become compromised with age. In neurons, declining mitochondrial axonal transport has been associated with reduced cellular health. However, it is still unclear to what extent the decline of mitochondrial transport and function observed during ageing are coupled, and if somal and axonal mitochondria display compartment-specific features that make them more susceptible to the ageing process. It is also not known whether the biophysical state of the cytoplasm, thought to affect many cellular functions, changes with age to impact mitochondrial trafficking and homeostasis. Focusing on the mouse peripheral nervous system, we show that age-dependent decline in mitochondrial trafficking is accompanied by reduction of mitochondrial membrane potential and intramitochondrial viscosity, but not calcium buffering, in both somal and axonal mitochondria. Intriguingly, we observe a specific increase in cytoplasmic viscosity in the neuronal cell body, where mitochondria are most polarised, which correlates with decreased cytoplasmic diffusiveness. Increasing cytoplasmic crowding in the somatic compartment of DRG neurons grown in microfluidic chambers reduces mitochondrial axonal trafficking, suggesting a mechanistic link between the regulation of cytoplasmic viscosity and mitochondrial dynamics. Our work provides a reference for studying the relationship between neuronal mitochondrial homeostasis and the viscoelasticity of the cytoplasm in a compartment-dependent manner during ageing.
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Affiliation(s)
- James N Sleigh
- Department of Neuromuscular Diseases and UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, University College London, London, UK
- UK Dementia Research Institute, University College London, London, UK
| | - Francesca Mattedi
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Sandy Richter
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Emily Annuario
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Kristal Ng
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | | | - Iveta Ivanova
- Department of Physics, King's College London, London, UK
| | - István L Darabán
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Parth P Joshi
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Elena R Rhymes
- Department of Neuromuscular Diseases and UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, University College London, London, UK
- UK Dementia Research Institute, University College London, London, UK
| | - Shirwa Awale
- Department of Physics, King's College London, London, UK
| | - Gokhan Yahioglu
- Antikor Biopharma Ltd, Stevenage Bioscience Catalyst, Stevenage, UK
| | - Jacqueline C Mitchell
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Klaus Suhling
- Department of Physics, King's College London, London, UK
| | - Giampietro Schiavo
- Department of Neuromuscular Diseases and UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, University College London, London, UK
- UK Dementia Research Institute, University College London, London, UK
| | - Alessio Vagnoni
- Department of Basic and Clinical Neurosciences, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- MIA-Portugal, Multidisciplinary Institute of Ageing, University of Coimbra, Coimbra, Portugal
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2
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Vasudevan Sajini D, Thaggikuppe Krishnamurthy P, Chakkittukandiyil A, Mudavath RN. Orientin Modulates Nrf2-ARE, PI3K/Akt, JNK-ERK1/2, and TLR4/NF-kB Pathways to Produce Neuroprotective Benefits in Parkinson's Disease. Neurochem Res 2024; 49:1577-1587. [PMID: 38276990 DOI: 10.1007/s11064-024-04099-8] [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: 08/08/2023] [Revised: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 01/27/2024]
Abstract
Parkinson's disease (PD) is characterized by oxidative stress and neuroinflammation as key pathological features. Emerging evidence suggests that nuclear factor erythroid 2 related factor 2-antioxidant response element (Nrf2-ARE), phosphatidylinositol 3‑kinase-protein kinase B (PI3K-Akt), c-Jun N-terminal kinase-extracellular signal-regulated kinase 1/2 (JNK-ERK1/2), and toll-like receptor 4/nuclear factor-kappa B (TLR4/NF-kB) pathways play pivotal roles in PD pathogenesis. Orientin, a phenolic phytoconstituent, has demonstrated modulatory potential on these pathways in various experimental conditions other than PD. In this study, we aimed to evaluate the neuroprotective effects of Orientin against rotenone-induced neurodegeneration in SH-SY5Y cell lines and the Swiss albino mice model of PD. Orientin was administered at doses 10 and 20 µM in cell lines and 10 and 20 mg/kg in mice, and its effects on rotenone-induced neurodegeneration were investigated. Oxidative stress markers including mitochondrial membrane potential (ΔΨm), reactive oxygen species (ROS), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx), as well as inflammatory markers including interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), were measured. The expression levels of genes related to Nrf2-ARE (Nrf2), PI3K/Akt (Akt), JNK-ERK1/2 (TNF-α), and TLR4/NF-kB (TNF-α) pathways were measured to understand the modulatory effect of Orientin on these pathways. Additionally, behavioral studies assessing locomotor activity, muscle coordination, and muscle rigidity were conducted with mice. Our results indicate that Orientin dose-dependently attenuated rotenone-induced changes in oxidative stress markers, inflammatory markers, gene expression levels, and behavioral parameters. Therefore, our study concludes that Orientin exhibits significant neuroprotective benefits against rotenone-induced PD by modulating Nrf2-ARE, PI3K-Akt, JNK-ERK1/2, and TLR4/NF-kB pathways.
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Affiliation(s)
- Deepak Vasudevan Sajini
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, 643 001, India
| | - Praveen Thaggikuppe Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, 643 001, India.
| | - Amritha Chakkittukandiyil
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, 643 001, India
| | - Ravi Naik Mudavath
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty, The Nilgiris, Tamil Nadu, 643 001, India
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3
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Pareek N, Mendiratta S, Kalita N, Sivaramakrishnan S, Khan RS, Samanta A. Unraveling Ferroptosis Mechanisms: Tracking Cellular Viscosity with Small Molecular Fluorescent Probes. Chem Asian J 2024; 19:e202400056. [PMID: 38430218 DOI: 10.1002/asia.202400056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
Ferroptosis is a recently identified form of regulated cell death characterized by iron accumulation and lipid peroxidation. Numerous functions for ferroptosis have been identified in physiological as well as pathological processes, most notably in the treatment of cancer. The intricate balance of redox homeostasis is profoundly altered during ferroptosis, leading to alteration in cellular microenvironment. One such microenvironment is viscosity among others such as pH, polarity, and temperature. Therefore, understanding the dynamics of ferroptosis associated viscosity levels within organelles is crucial. To date, there are a very few reviews that detects ferroptosis assessing reactive species. In this review, we have summarized organelle's specific fluorescent probes that detects dynamics of microviscosity during ferroptosis. Also, we offer the readers an insight of their design strategy, photophysics and associated bioimaging concluding with the future perspective and challenges in the related field.
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Affiliation(s)
- Niharika Pareek
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Sana Mendiratta
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Nripankar Kalita
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Shreya Sivaramakrishnan
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Rafique Sanu Khan
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
| | - Animesh Samanta
- Department of Chemistry, School of Natural Sciences Institution, Shiv Nadar Institution of Eminence (SNIoE), Delhi NCR, Greater Noida, Uttar Pradesh, 201314, India
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4
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Hara T, Amagai R, Sakakibara R, Okado-Matsumoto A. Supercomplex formation of mitochondrial respiratory chain complexes in leukocytes from patients with neurodegenerative diseases. J Biochem 2024; 175:289-298. [PMID: 38016934 DOI: 10.1093/jb/mvad100] [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: 07/25/2023] [Accepted: 11/16/2023] [Indexed: 11/30/2023] Open
Abstract
With population aging, cognitive impairments and movement disorders due to neurodegenerative diseases, such as Alzheimer's disease (AD), Parkinson's disease (PD) and dementia with Lewy bodies (DLB), are increasingly considered as key social issues. Clinically, it has remained challenging to diagnose them before the onset of symptoms because of difficulty to observe the progressive loss of neurons in the brain. Therefore, with exploratory research into biomarkers, a number of candidates have previously been proposed, such as activities of mitochondrial respiratory chain complexes in blood in AD and PD. In this study, we focused on the formation of mitochondrial respiratory chain supercomplexes (SCs) because the formation of SC itself modulates the activity of each complex. Here we investigated the SC formation in leukocytes from patients with AD, PD and DLB. Our results showed that SCs were well formed in AD and PD compared with controls, while poorly formed in DLB. We highlighted that the disruption of the SC formation correlated with the progression of PD and DLB. Taking our findings together, we propose that pronounced SC formation would already have occurred before the onset of AD, PD and DLB and, with the progression of neurodegeneration, the SC formation would gradually be disrupted.
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Affiliation(s)
- Tsukasa Hara
- Department of Biology, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| | - Ryosuke Amagai
- Department of Biology, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
| | - Ryuji Sakakibara
- Division of Neurology, Department of Internal Medicine, Sakura Medical Center, Toho University, Shimoshizu 564-1, Sakura, Chiba 285-8741, Japan
| | - Ayako Okado-Matsumoto
- Department of Biology, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan
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5
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Cao Y, Xu S, Liu J, Zhao S, Yan J. Rational construction and evaluation of a dual-functional near-infrared fluorescent probe for the imaging of Amyloid-β and mitochondrial viscosity. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 306:123564. [PMID: 37871543 DOI: 10.1016/j.saa.2023.123564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/11/2023] [Accepted: 10/18/2023] [Indexed: 10/25/2023]
Abstract
Alzheimer's disease is a fatal, incurable, chronic neurodegenerative disease. Diagnosis in its early and even preclinical stages will be beneficial for its prevention and treatment. In the accepted pathological theory, abnormal accumulation of Aβ protein and abnormal mitochondrial function, including changes in mitochondrial viscosity, is closely related to Alzheimer's disease. To date, rare fluorescent probes have been reported that can simultaneously image Aβ plaques and mitochondrial viscosity. Therefore, the development of a dual-functional fluorescent probe for real-time fluorescence imaging of Aβ plaques and mitochondrial viscosity is crucial to discover a novel approach and strategy for the treatment of Alzheimer's disease, and to understand the pathological process and crosstalk between different biomarkers of Alzheimer's disease. Herein, we rationally designed and synthesized a series of fluorescent probes QM-SF-1∼5 with dimethylamino-quinolinium as the skeleton and thiophene as the π bridge to connect the groups with different electron-push/pull capacities. Among them, QM-SF-2 exhibited excellent properties such as large Stokes shift (168 nm), near-infrared emission (689 nm), and high selectivity and sensitivity (limit of detection was 1.07 μM) to Aβ aggregate and mitochondrial viscosity changes, indicating its promising prospects as a dual-functional imaging tool in the pathological study of Alzheimer's disease.
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Affiliation(s)
- Yingmei Cao
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Shengmei Xu
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, China
| | - Jinsheng Liu
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China
| | - Shuai Zhao
- Orthopedics Department, Guangdong Provincial Hospital of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 111 Dade Road, Guangzhou 510120, China.
| | - Jinwu Yan
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China.
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6
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Vue Z, Garza‐Lopez E, Neikirk K, Katti P, Vang L, Beasley H, Shao J, Marshall AG, Crabtree A, Murphy AC, Jenkins BC, Prasad P, Evans C, Taylor B, Mungai M, Killion M, Stephens D, Christensen TA, Lam J, Rodriguez B, Phillips MA, Daneshgar N, Koh H, Koh A, Davis J, Devine N, Saleem M, Scudese E, Arnold KR, Vanessa Chavarin V, Daniel Robinson R, Chakraborty M, Gaddy JA, Sweetwyne MT, Wilson G, Zaganjor E, Kezos J, Dondi C, Reddy AK, Glancy B, Kirabo A, Quintana AM, Dai D, Ocorr K, Murray SA, Damo SM, Exil V, Riggs B, Mobley BC, Gomez JA, McReynolds MR, Hinton A. 3D reconstruction of murine mitochondria reveals changes in structure during aging linked to the MICOS complex. Aging Cell 2023; 22:e14009. [PMID: 37960952 PMCID: PMC10726809 DOI: 10.1111/acel.14009] [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: 06/25/2023] [Revised: 09/01/2023] [Accepted: 09/19/2023] [Indexed: 11/15/2023] Open
Abstract
During aging, muscle gradually undergoes sarcopenia, the loss of function associated with loss of mass, strength, endurance, and oxidative capacity. However, the 3D structural alterations of mitochondria associated with aging in skeletal muscle and cardiac tissues are not well described. Although mitochondrial aging is associated with decreased mitochondrial capacity, the genes responsible for the morphological changes in mitochondria during aging are poorly characterized. We measured changes in mitochondrial morphology in aged murine gastrocnemius, soleus, and cardiac tissues using serial block-face scanning electron microscopy and 3D reconstructions. We also used reverse transcriptase-quantitative PCR, transmission electron microscopy quantification, Seahorse analysis, and metabolomics and lipidomics to measure changes in mitochondrial morphology and function after loss of mitochondria contact site and cristae organizing system (MICOS) complex genes, Chchd3, Chchd6, and Mitofilin. We identified significant changes in mitochondrial size in aged murine gastrocnemius, soleus, and cardiac tissues. We found that both age-related loss of the MICOS complex and knockouts of MICOS genes in mice altered mitochondrial morphology. Given the critical role of mitochondria in maintaining cellular metabolism, we characterized the metabolomes and lipidomes of young and aged mouse tissues, which showed profound alterations consistent with changes in membrane integrity, supporting our observations of age-related changes in muscle tissues. We found a relationship between changes in the MICOS complex and aging. Thus, it is important to understand the mechanisms that underlie the tissue-dependent 3D mitochondrial phenotypic changes that occur in aging and the evolutionary conservation of these mechanisms between Drosophila and mammals.
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Affiliation(s)
- Zer Vue
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | | | - Kit Neikirk
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Prasanna Katti
- National Heart, Lung and Blood Institute, National Institutes of HealthMarylandBethesdaUSA
| | - Larry Vang
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Heather Beasley
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Jianqiang Shao
- Central Microscopy Research FacilityUniversity of IowaIowaIowa CityUSA
| | - Andrea G. Marshall
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Amber Crabtree
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Alexandria C. Murphy
- Department of Biochemistry and Molecular Biology, The Huck Institute of the Life SciencesPennsylvania State UniversityPennsylvaniaState CollegeUSA
| | - Brenita C. Jenkins
- Department of Biochemistry and Molecular Biology, The Huck Institute of the Life SciencesPennsylvania State UniversityPennsylvaniaState CollegeUSA
| | - Praveena Prasad
- Department of Biochemistry and Molecular Biology, The Huck Institute of the Life SciencesPennsylvania State UniversityPennsylvaniaState CollegeUSA
| | - Chantell Evans
- Department of Cell BiologyDuke University School of MedicineNorth CarolinaDurhamUSA
| | - Brittany Taylor
- J. Crayton Pruitt Family Department of Biomedical EngineeringUniversity of FloridaFloridaGainesvilleUSA
| | - Margaret Mungai
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Mason Killion
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Dominique Stephens
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | | | - Jacob Lam
- Department of Internal MedicineUniversity of IowaIowaIowa CityUSA
| | | | - Mark A. Phillips
- Department of Integrative BiologyOregon State UniversityOregonCorvallisUSA
| | - Nastaran Daneshgar
- Department of Integrative BiologyOregon State UniversityOregonCorvallisUSA
| | - Ho‐Jin Koh
- Department of Biological SciencesTennessee State UniversityTennesseeNashvilleUSA
| | - Alice Koh
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
- Department of MedicineVanderbilt University Medical CenterTennesseeNashvilleUSA
| | - Jamaine Davis
- Department of Biochemistry, Cancer Biology, Neuroscience, and PharmacologyMeharry Medical CollegeTennesseeNashvilleUSA
| | - Nina Devine
- Department of Integrative BiologyOregon State UniversityOregonCorvallisUSA
| | - Mohammad Saleem
- Department of MedicineVanderbilt University Medical CenterTennesseeNashvilleUSA
| | - Estevão Scudese
- Laboratory of Biosciences of Human Motricity (LABIMH) of the Federal University of State of Rio de Janeiro (UNIRIO)Rio de JaneiroBrazil
- Sport Sciences and Exercise Laboratory (LaCEE)Catholic University of Petrópolis (UCP)PetrópolisState of Rio de JaneiroBrazil
| | - Kenneth Ryan Arnold
- Department of Ecology and Evolutionary BiologyUniversity of California at IrvineCaliforniaIrvineUSA
| | - Valeria Vanessa Chavarin
- Department of Ecology and Evolutionary BiologyUniversity of California at IrvineCaliforniaIrvineUSA
| | - Ryan Daniel Robinson
- Department of Ecology and Evolutionary BiologyUniversity of California at IrvineCaliforniaIrvineUSA
| | | | - Jennifer A. Gaddy
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
- Department of MedicineVanderbilt University Medical CenterTennesseeNashvilleUSA
- Department of Medicine Health and SocietyVanderbilt UniversityTennesseeNashvilleUSA
- Department of Pathology, Microbiology and ImmunologyVanderbilt University Medical CenterTennesseeNashvilleUSA
- Department of Veterans AffairsTennessee Valley Healthcare SystemsTennesseeNashvilleUSA
| | - Mariya T. Sweetwyne
- Department of Laboratory Medicine and PathologyUniversity of WashingtonWashingtonSeattleUSA
| | - Genesis Wilson
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - Elma Zaganjor
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
| | - James Kezos
- Sanford Burnham Prebys Medical Discovery InstituteCaliforniaLa JollaUSA
| | - Cristiana Dondi
- Sanford Burnham Prebys Medical Discovery InstituteCaliforniaLa JollaUSA
| | | | - Brian Glancy
- National Heart, Lung and Blood Institute, National Institutes of HealthMarylandBethesdaUSA
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of HealthMarylandBethesdaUSA
| | - Annet Kirabo
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
- Department of MedicineVanderbilt University Medical CenterTennesseeNashvilleUSA
| | - Anita M. Quintana
- Department of Biological Sciences, Border Biomedical Research CenterUniversity of Texas at El PasoTexasEl PasoUSA
| | - Dao‐Fu Dai
- Department of PathologyUniversity of Johns Hopkins School of MedicineMarylandBaltimoreUSA
| | - Karen Ocorr
- Sanford Burnham Prebys Medical Discovery InstituteCaliforniaLa JollaUSA
| | - Sandra A. Murray
- Department of Cell Biology, School of MedicineUniversity of PittsburghPennsylvaniaPittsburghUSA
| | - Steven M. Damo
- Department of Life and Physical SciencesFisk UniversityTennesseeNashvilleUSA
- Center for Structural BiologyVanderbilt UniversityTennesseeNashvilleUSA
| | - Vernat Exil
- Department of Pediatrics, Carver College of MedicineUniversity of IowaIowaIowa CityUSA
- Department of Pediatrics, Division of CardiologySt. Louis University School of MedicineMissouriSt. LouisUSA
| | - Blake Riggs
- Department of BiologySan Francisco State UniversityCaliforniaSan FranciscoUSA
| | - Bret C. Mobley
- Department of PathologyVanderbilt University Medical CenterTennesseeNashvilleUSA
| | - Jose A. Gomez
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
- Department of MedicineVanderbilt University Medical CenterTennesseeNashvilleUSA
| | - Melanie R. McReynolds
- Department of Biochemistry and Molecular Biology, The Huck Institute of the Life SciencesPennsylvania State UniversityPennsylvaniaState CollegeUSA
| | - Antentor Hinton
- Department of Molecular Physiology and BiophysicsVanderbilt UniversityTennesseeNashvilleUSA
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7
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Samaniego Lopez C, Verónica Rivas M, García Cambón TA, Wolosiuk A, Spagnuolo CC. Amphiphilic Near‐Infrared Fluorescent Molecular Probes: Optical Properties in Solution and in Surfactant Micelle Microenvironment. CHEMPHOTOCHEM 2023. [DOI: 10.1002/cptc.202200333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Cecilia Samaniego Lopez
- CIHIDECAR-UBA-CONICET Int. Guiraldes 2160, Ciudad Universitaria Buenos Aires C1428EGA Argentina
| | - M. Verónica Rivas
- CIHIDECAR-UBA-CONICET Int. Guiraldes 2160, Ciudad Universitaria Buenos Aires C1428EGA Argentina
- INN – CONICET Gerencia Química Centro Atómico Constituyentes Comisión Nacional de Energía Atómica Av. Gral. Paz 1499 San Martín Buenos Aires B1650KNA Argentina
| | - Tomás A. García Cambón
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Int. Guiraldes 2160, Ciudad Universitaria Buenos Aires C1428EGA Argentina
| | - Alejandro Wolosiuk
- INN – CONICET Gerencia Química Centro Atómico Constituyentes Comisión Nacional de Energía Atómica Av. Gral. Paz 1499 San Martín Buenos Aires B1650KNA Argentina
| | - Carla C. Spagnuolo
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires Int. Guiraldes 2160, Ciudad Universitaria Buenos Aires C1428EGA Argentina
- CIHIDECAR-UBA-CONICET Int. Guiraldes 2160, Ciudad Universitaria Buenos Aires C1428EGA Argentina
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8
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Cikes D, Elsayad K, Sezgin E, Koitai E, Torma F, Orthofer M, Yarwood R, Heinz LX, Sedlyarov V, Miranda ND, Taylor A, Grapentine S, Al-Murshedi F, Abot A, Weidinger A, Kutchukian C, Sanchez C, Cronin SJF, Novatchkova M, Kavirayani A, Schuetz T, Haubner B, Haas L, Hagelkruys A, Jackowski S, Kozlov AV, Jacquemond V, Knauf C, Superti-Furga G, Rullman E, Gustafsson T, McDermot J, Lowe M, Radak Z, Chamberlain JS, Bakovic M, Banka S, Penninger JM. PCYT2-regulated lipid biosynthesis is critical to muscle health and ageing. Nat Metab 2023; 5:495-515. [PMID: 36941451 DOI: 10.1038/s42255-023-00766-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 02/10/2023] [Indexed: 03/23/2023]
Abstract
Muscle degeneration is the most prevalent cause for frailty and dependency in inherited diseases and ageing. Elucidation of pathophysiological mechanisms, as well as effective treatments for muscle diseases, represents an important goal in improving human health. Here, we show that the lipid synthesis enzyme phosphatidylethanolamine cytidyltransferase (PCYT2/ECT) is critical to muscle health. Human deficiency in PCYT2 causes a severe disease with failure to thrive and progressive weakness. pcyt2-mutant zebrafish and muscle-specific Pcyt2-knockout mice recapitulate the participant phenotypes, with failure to thrive, progressive muscle weakness and accelerated ageing. Mechanistically, muscle Pcyt2 deficiency affects cellular bioenergetics and membrane lipid bilayer structure and stability. PCYT2 activity declines in ageing muscles of mice and humans, and adeno-associated virus-based delivery of PCYT2 ameliorates muscle weakness in Pcyt2-knockout and old mice, offering a therapy for individuals with a rare disease and muscle ageing. Thus, PCYT2 plays a fundamental and conserved role in vertebrate muscle health, linking PCYT2 and PCYT2-synthesized lipids to severe muscle dystrophy and ageing.
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Affiliation(s)
- Domagoj Cikes
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria.
| | - Kareem Elsayad
- Division of Anatomy, Center for Anatomy and Cell Biology and Medical Imaging Cluster (MIC), Vienna, Austria.
| | - Erdinc Sezgin
- MRC Weatherall Institute of Molecular Medicine, MRC Human Immunology Unit, University of Oxford, Oxford, UK
- Science for Life Laboratory, Department of Women's and Children's Health, Karolinska Institutet, Solna, Sweden
| | - Erika Koitai
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary
| | - Ferenc Torma
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary
| | - Michael Orthofer
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Rebecca Yarwood
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Leonhard X Heinz
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Vitaly Sedlyarov
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | | | - Adrian Taylor
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Sophie Grapentine
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Fathiya Al-Murshedi
- Department of Genetics, College of Medicine, Sultan Qaboos University, Muscat, Sultanate of Oman
| | - Anne Abot
- Enterosys SAS, Prologue Biotech, Labège, France
| | - Adelheid Weidinger
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
| | - Candice Kutchukian
- Institut NeuroMyoGène, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Colline Sanchez
- Institut NeuroMyoGène, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Shane J F Cronin
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Maria Novatchkova
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Anoop Kavirayani
- VBCF, Vienna BioCenter Core Facilities, Vienna BioCenter, Vienna, Austria
| | - Thomas Schuetz
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Bernhard Haubner
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Lisa Haas
- IMP Research Institute of Molecular Pathology, Vienna, Austria
| | - Astrid Hagelkruys
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | | | - Andrey V Kozlov
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
| | - Vincent Jacquemond
- Institut NeuroMyoGène, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Claude Knauf
- INSERM U1220 Institut de Recherche en Santé Digestive, CHU Purpan, Université Toulouse III Paul Sabatier Toulouse, Toulouse, France
| | - Giulio Superti-Furga
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Eric Rullman
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
- Cardiovascular Theme, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Thomas Gustafsson
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, and Unit of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
| | - John McDermot
- Manchester Centre for Genomics Medicine, St Mary's Hospital, Manchester University Hospital Foundation Trust, Manchester, UK
| | - Martin Lowe
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Zsolt Radak
- Research Institute of Sport Science, University of Physical Education, Budapest, Hungary
| | - Jeffrey S Chamberlain
- Department of Neurology, University of Washington, Seattle, WA, USA
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, University of Washington, Seattle, WA, USA
| | - Marica Bakovic
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Siddharth Banka
- Manchester Centre for Genomics Medicine, St Mary's Hospital, Manchester University Hospital Foundation Trust, Manchester, UK
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Josef M Penninger
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria.
- Department of Medical Genetics, Life Science Institute, University of British Columbia, Vancouver, British Columbia, Canada.
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9
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Kuter KZ, Olech Ł, Głowacka U, Paleczna M. Increased Beta-Hydroxybutyrate Level Is Not Sufficient for the Neuroprotective Effect of Long-Term Ketogenic Diet in an Animal Model of Early Parkinson's Disease. Exploration of Brain and Liver Energy Metabolism Markers. Int J Mol Sci 2021; 22:ijms22147556. [PMID: 34299176 PMCID: PMC8307513 DOI: 10.3390/ijms22147556] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 12/25/2022] Open
Abstract
The benefits of a ketogenic diet in childhood epilepsy steered up hope for neuroprotective effects of hyperketonemia in Parkinson’s disease (PD). There are multiple theoretical reasons but very little actual experimental proof or clinical trials. We examined the long-term effects of the ketogenic diet in an animal model of early PD. A progressive, selective dopaminergic medium size lesion was induced by 6-OHDA injection into the medial forebrain bundle. Animals were kept on the stringent ketogenic diet (1% carbohydrates, 8% protein, 70% fat) for 3 weeks prior and 4 weeks after the brain operation. Locomotor activity, neuron count, dopaminergic terminal density, dopamine level, and turnover were analyzed at three time-points post-lesion, up to 4 weeks after the operation. Energy metabolism parameters (glycogen, mitochondrial complex I and IV, lactate, beta-hydroxybutyrate, glucose) were analyzed in the brain and liver or plasma. Protein expression of enzymes essential for gluconeogenesis (PEPCK, G6PC) and glucose utilization (GCK) was analyzed in the liver. Despite long-term hyperketonemia pre- and post-lesion, the ketogenic diet did not protect against 6-OHDA-induced dopaminergic neuron lesions. The ketogenic diet only tended to improve locomotor activity and normalize DA turnover in the striatum. Rats fed 7 weeks in total with a restrictive ketogenic diet maintained normoglycemia, and neither gluconeogenesis nor glycogenolysis in the liver was responsible for this effect. Therefore, potentially, the ketogenic diet could be therapeutically helpful to support the late compensatory mechanisms active via glial cells but does not necessarily act against the oxidative stress-induced parkinsonian neurodegeneration itself. A word of caution is required as the stringent ketogenic diet itself also carries the risk of unwanted side effects, so it is important to study the long-term effects of such treatments. More detailed metabolic long-term studies using unified diet parameters are required, and human vs. animal differences should be taken under consideration.
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10
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Shen W, Wang P, Xie Z, Zhou H, Hu Y, Fu M, Zhu Q. A bifunctional probe reveals increased viscosity and hydrogen sulfide in zebra fish model of Parkinson's disease. Talanta 2021; 234:122621. [PMID: 34364430 DOI: 10.1016/j.talanta.2021.122621] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 11/18/2022]
Abstract
Altered H2S levels and intracellular viscosity have both been seen in Parkinson's disease (PD). However, how H2S and intracellular viscosity are involved in PD pathogenesis remains unknown. Herein, a dual-function fluorescent probe DF was designed and synthesized to analyze intracellular viscosity and hydrogen sulfide. It is a near-infrared fluorescence probe with improved photostability and large Stokes shift (110 nm). The probe reveals increased viscosity and hydrogen sulfide in zebrafish model of PD for the first time.
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Affiliation(s)
- Wei Shen
- Department of Surgery, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, 321000, China
| | - Peng Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zhenda Xie
- Institute of Natural Medicine and Health Product, School of Life Science, Taizhou University, Taizhou, 318000, China
| | - Haihua Zhou
- Department of Surgery, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, 321000, China
| | - Yi Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics and University of Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Beijing, 100049, China.
| | - Manlin Fu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Qing Zhu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China.
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11
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Kaplaneris N, Son J, Mendive-Tapia L, Kopp A, Barth ND, Maksso I, Vendrell M, Ackermann L. Chemodivergent manganese-catalyzed C-H activation: modular synthesis of fluorogenic probes. Nat Commun 2021; 12:3389. [PMID: 34099672 PMCID: PMC8185085 DOI: 10.1038/s41467-021-23462-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/13/2021] [Indexed: 01/22/2023] Open
Abstract
Bioorthogonal late-stage diversification of amino acids and peptides bears enormous potential for drug discovery and molecular imaging. Despite major accomplishments, these strategies largely rely on traditional, lengthy prefunctionalization methods, heavily involving precious transition-metal catalysis. Herein, we report on a resource-economical manganese(I)-catalyzed C-H fluorescent labeling of structurally complex peptides ensured by direct alkynylation and alkenylation manifolds. This modular strategy sets the stage for unraveling structure-activity relationships between structurally discrete fluorophores towards the rational design of BODIPY fluorogenic probes for real-time analysis of immune cell function.
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Affiliation(s)
- Nikolaos Kaplaneris
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Jongwoo Son
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany
| | | | - Adelina Kopp
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Nicole D Barth
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh, UK
| | - Isaac Maksso
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Marc Vendrell
- Centre for Inflammation Research, The University of Edinburgh, Edinburgh, UK.
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Göttingen, Germany.
- German Centre for Cardiovascular Research (DZHK), Berlin, Germany.
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12
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Anis E, Zafeer MF, Firdaus F, Islam SN, Khan AA, Hossain MM. Perillyl Alcohol Mitigates Behavioural Changes and Limits Cell Death and Mitochondrial Changes in Unilateral 6-OHDA Lesion Model of Parkinson's Disease Through Alleviation of Oxidative Stress. Neurotox Res 2020; 38:461-477. [PMID: 32394056 DOI: 10.1007/s12640-020-00213-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022]
Abstract
In this study, we aim to assess the phytomedicinal potential of perillyl alcohol (PA), a dietary monoterpenoid, in a unilateral 6-hydroxydopamine (6-OHDA) lesion rat model of Parkinson's disease (PD). We observed that PA supplementation alleviated behavioural abnormalities such as loss of coordination, reduced rearing and motor asymmetry in lesioned animals. We also observed that PA-treated animals exhibited reduced oxidative stress, DNA fragmentation and caspase 3 activity indicating alleviation of apoptotic cell death. We found reduced mRNA levels of pro-apoptotic regulator BAX and pro-inflammatory mediators IL18 and TNFα in PA-treated animals. Further, PA treatment successfully increased mRNA and protein levels of Bcl2, mitochondrial biogenesis regulator PGC1α and tyrosine hydroxylase (TH) in lesioned animals. We observed that PA treatment blocked BAX and Drp1 translocation to mitochondria, an event often associated with the inception of apoptosis. Further, 6-OHDA exposure reduced expression of electron transport chain complexes I and IV, thereby disturbing energy metabolism. Conversely, expression levels of both complexes were upregulated with PA treatment in lesioned rats. Finally, we found that protein levels of Nrf2, the transcription factor responsible for antioxidant gene expression, were markedly reduced in cytosolic and nuclear fraction on 6-OHDA exposure, and PA increased expression of Nrf2 in both fractions. We believe that our data hints towards PA having the ability to provide cytoprotection in a hemiparkinsonian rat model through alleviation of motor deficits, oxidative stress, mitochondrial dysfunction and apoptosis.
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Affiliation(s)
- Ehraz Anis
- Interdisciplinary Brain Research Centre, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
| | - Mohd Faraz Zafeer
- Interdisciplinary Brain Research Centre, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Fakiha Firdaus
- Interdisciplinary Brain Research Centre, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Shireen Naaz Islam
- Department of Biochemistry, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Azka Anees Khan
- Department of Pathology, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - M Mobarak Hossain
- Interdisciplinary Brain Research Centre, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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13
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Kuter KZ, Cenci MA, Carta AR. The role of glia in Parkinson's disease: Emerging concepts and therapeutic applications. PROGRESS IN BRAIN RESEARCH 2020; 252:131-168. [PMID: 32247363 DOI: 10.1016/bs.pbr.2020.02.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Originally believed to primarily affect neurons, Parkinson's disease (PD) has recently been recognized to also affect the functions and integrity of microglia and astroglia, two cell categories of fundamental importance to brain tissue homeostasis, defense, and repair. Both a loss of glial supportive-defensive functions and a toxic gain of glial functions are implicated in the neurodegenerative process. Moreover, the chronic treatment with L-DOPA may cause maladaptive glial plasticity favoring a development of therapy complications. This chapter focuses on the pathophysiology of PD from a glial point of view, presenting this rapidly growing field from the first discoveries made to the most recent developments. We report and compare histopathological and molecular findings from experimental models of PD and human studies. We moreover discuss the important role played by astrocytes in compensatory adaptations taking place during presymptomatic disease stages. We finally describe examples of potential therapeutic applications stemming from an increased understanding of the important roles of glia in PD.
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Affiliation(s)
- Katarzyna Z Kuter
- Department of Neuropsychopharmacology, Maj Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland.
| | - M Angela Cenci
- Basal Ganglia Pathophysiology Unit, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Anna R Carta
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy.
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14
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Novack GV, Galeano P, Castaño EM, Morelli L. Mitochondrial Supercomplexes: Physiological Organization and Dysregulation in Age-Related Neurodegenerative Disorders. Front Endocrinol (Lausanne) 2020; 11:600. [PMID: 33042002 PMCID: PMC7518391 DOI: 10.3389/fendo.2020.00600] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/22/2020] [Indexed: 12/16/2022] Open
Abstract
Several studies suggest that the assembly of mitochondrial respiratory complexes into structures known as supercomplexes (SCs) may increase the efficiency of the electron transport chain, reducing the rate of production of reactive oxygen species. Therefore, the study of the (dis)assembly of SCs may be relevant for the understanding of mitochondrial dysfunction reported in brain aging and major neurodegenerative disorders such as Alzheimer's disease (AD) and Parkinson's disease (PD). Here we briefly reviewed the biogenesis and structural properties of SCs, the impact of mtDNA mutations and mitochondrial dynamics on SCs assembly, the role of lipids on stabilization of SCs and the methodological limitations for the study of SCs. More specifically, we summarized what is known about mitochondrial dysfunction and SCs organization and activity in aging, AD and PD. We focused on the critical variables to take into account when postmortem tissues are used to study the (dis)assembly of SCs. Since few works have been performed to study SCs in AD and PD, the impact of SCs dysfunction on the alteration of brain energetics in these diseases remains poorly understood. The convergence of future progress in the study of SCs structure at high resolution and the refinement of animal models of AD and PD, as well as the use of iPSC-based and somatic cell-derived neurons, will be critical in understanding the biological relevance of the structural remodeling of SCs.
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15
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Stay Fit, Stay Young: Mitochondria in Movement: The Role of Exercise in the New Mitochondrial Paradigm. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7058350. [PMID: 31320983 PMCID: PMC6607712 DOI: 10.1155/2019/7058350] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/23/2019] [Accepted: 05/08/2019] [Indexed: 12/29/2022]
Abstract
Skeletal muscles require the proper production and distribution of energy to sustain their work. To ensure this requirement is met, mitochondria form large networks within skeletal muscle cells, and during exercise, they can enhance their functions. In the present review, we discuss recent findings on exercise-induced mitochondrial adaptations. We emphasize the importance of mitochondrial biogenesis, morphological changes, and increases in respiratory supercomplex formation as mechanisms triggered by exercise that may increase the function of skeletal muscles. Finally, we highlight the possible effects of nutraceutical compounds on mitochondrial performance during exercise and outline the use of exercise as a therapeutic tool in noncommunicable disease prevention. The resulting picture shows that the modulation of mitochondrial activity by exercise is not only fundamental for physical performance but also a key point for whole-organism well-being.
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16
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Woodcock EM, Girvan P, Eckert J, Lopez-Duarte I, Kubánková M, van Loon JJWA, Brooks NJ, Kuimova MK. Measuring Intracellular Viscosity in Conditions of Hypergravity. Biophys J 2019; 116:1984-1993. [PMID: 31053255 DOI: 10.1016/j.bpj.2019.03.038] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/28/2019] [Accepted: 03/19/2019] [Indexed: 12/12/2022] Open
Abstract
Gravity-sensitive cellular responses are regularly observed in both specialized and nonspecialized cells. One potential mechanism for this sensitivity is a changing viscosity of the intracellular organelles. Here, we report a novel, to our knowledge, viscosity-sensitive molecular rotor based on mesosubstituted boron-dipyrrin used to investigate the response of viscosity of cellular membranes to hypergravity conditions created at the large diameter centrifuge at the European Space Agency Technology Centre. Mouse osteoblastic (MC3T3-E1) and endothelial (human umbilical vein endothelial cell) cell lines were tested, and an increase in viscosity was found with increasing hypergravity loading. This response is thought to be primarily biologically driven, with the potential for a small, instantaneous physical mechanism also contributing to the observed effect. This work provides the first, to our knowledge, quantitative data for cellular viscosity changes under hypergravity, up to 15 × g.
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Affiliation(s)
- Emma M Woodcock
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom
| | - Paul Girvan
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom
| | - Julia Eckert
- Department of Physics, School of Science, Technische Universität Dresden, Dresden, Germany; European Space Agency Technology Centre, TEC-MMG LIS Lab, Noordwijk, the Netherlands
| | - Ismael Lopez-Duarte
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom
| | - Markéta Kubánková
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom
| | - Jack J W A van Loon
- European Space Agency Technology Centre, TEC-MMG LIS Lab, Noordwijk, the Netherlands; Department of Oral and Maxillofacial Surgery/Oral Pathology, Dutch Experiment Support Centre, Academic Centre for Dentistry Amsterdam, VU University Medical Centre, Amsterdam, the Netherlands
| | - Nicholas J Brooks
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom.
| | - Marina K Kuimova
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, United Kingdom; Institute of Chemical Biology, Imperial College London, South Kensington, London, United Kingdom.
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17
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Kuter KZ, Olech Ł, Dencher NA. Increased energetic demand supported by mitochondrial electron transfer chain and astrocyte assistance is essential to maintain the compensatory ability of the dopaminergic neurons in an animal model of early Parkinson's disease. Mitochondrion 2018; 47:227-237. [PMID: 30578987 DOI: 10.1016/j.mito.2018.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 10/03/2018] [Accepted: 12/11/2018] [Indexed: 01/03/2023]
Abstract
Partial degeneration of dopaminergic neurons in the substantia nigra (SN), induces locomotor disability in animals but with time it is spontaneously compensated for by neurons surviving in the tissue by increasing their functional efficiency. Such compensation probably increases energy requirements and astrocyte support could be essential for this ability. We studied the effect of degeneration of dopaminergic neurons induced by the selective toxin 6-hydroxydopamine and/or death of 30% of astrocytes induced by chronic infusion of the glial toxin fluorocitrate on functioning of the mitochondrial electron transfer chain (ETC) complexes (Cxs) I, II, IV and their higher assembled forms, supercomplexes in the rat SN. Astrocyte death decreased Cx I and IV performance, while significantly increased the amount of Cx II protein SDHA, indicating system adaptation. After death of 50% of dopaminergic neurons in the SN, we observed increased mitochondrial Cxs performing, especially Cx I and IV in the remaining cells. It corresponded with reduction of behavioural deficits. Those results support the hypothesis that the compensatory ability of surviving neurons requires meeting their higher energetic demand by ETC. When astrocytes were defective, the neurons remaining after partial lesion were not able to enhance their functioning anymore and compensate for deficits. It proves in vivo that astrocytic support is important for compensatory potential of neurons in the SN. Neuro-glia cooperation is fundamental for compensation for early deficits in the nigrostriatal system.
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Affiliation(s)
- Katarzyna Z Kuter
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland; Department of Chemistry, Physical Biochemistry, Technische Universität Darmstadt, Darmstadt, Germany.
| | - Łukasz Olech
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Norbert A Dencher
- Department of Chemistry, Physical Biochemistry, Technische Universität Darmstadt, Darmstadt, Germany; Research Center for Molecular Mechanisms of Ageing and Age-related Neurodegenerative Diseases, Moscow Institute of Physics and Technology MIPT, Dolgoprudny/Moscow, Russia
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18
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Kuter K, Olech Ł, Głowacka U, Paleczna M. Astrocyte support is important for the compensatory potential of the nigrostriatal system neurons during early neurodegeneration. J Neurochem 2018; 148:63-79. [PMID: 30295916 DOI: 10.1111/jnc.14605] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 09/26/2018] [Accepted: 10/01/2018] [Indexed: 12/25/2022]
Abstract
Glial pathology precedes symptoms of Parkinson's disease and multiple other neurodegenerative diseases. Prolonged impairment of astrocytic functions could increase the vulnerability of dopaminergic neurons in the substantia nigra (SN), accelerate their degeneration and affect ability to compensate for partial degeneration at the presymptomatic stages of the disease. The aim of this study was to investigate the astrocyte depletion in the SN, its impact on the dopaminergic system functioning and multiple markers of energy metabolism during the early stages of neurodegeneration and compensation. We induced death of 30% of astrocytes by chronic infusion of fluorocitrate (FC) into the SN, simultaneously activating microglia response but sparing the dopaminergic neurons. The FC effect was reversible after toxin withdrawal. Dopaminergic neurons were killed by 6-hydroxydopamine causing transient locomotor disability, reversed with time showing compensatory potential. Death of astrocytes diminished the capability of the dopaminergic system to compensate for the degeneration of neurons and caused a local energy deprivation by decreasing lactate and glycogen amount. Studied markers suggest a shift in the usage of energy substrates, via increased glycogenolysis and glycolysis markers, ketone bodies availability and fatty acid transport in remaining cells. Peroxisome proliferator-activated receptor-gamma coactivator 1α (PGC-1alpha) and AMP-activated protein kinase (AMPK), the energy sensors, showed different regulation between the cell-types. Increased neuronal expression of carnitine palmitoyltransferase 1c could play a role in the adaptation to metabolic stress in response to glia dysfunction. Astrocyte energetic support is one of the essential factors for neuronal compensatory mechanisms of dopaminergic system and might have a leading role in the presymptomatic Parkinson's disease stages. OPEN SCIENCE BADGES: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/.
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Affiliation(s)
- Katarzyna Kuter
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Łukasz Olech
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Urszula Głowacka
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
| | - Martyna Paleczna
- Institute of Pharmacology, Polish Academy of Sciences, Krakow, Poland
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19
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Affiliation(s)
- Eric A Schon
- Department of Neurology and Department of Genetics and Development, Columbia University Medical Center, New York, NY 10032, USA.
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20
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The effect of different substitute groups and molecular weights of fucoidan on neuroprotective and anticomplement activity. Int J Biol Macromol 2018; 113:82-89. [DOI: 10.1016/j.ijbiomac.2018.02.109] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/05/2018] [Accepted: 02/15/2018] [Indexed: 12/17/2022]
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21
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Ammal Kaidery N, Thomas B. Current perspective of mitochondrial biology in Parkinson's disease. Neurochem Int 2018; 117:91-113. [PMID: 29550604 DOI: 10.1016/j.neuint.2018.03.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 12/12/2022]
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative movement disorder characterized by preferential loss of dopaminergic neurons of the substantia nigra pars compacta and the presence of Lewy bodies containing α-synuclein. Although the cause of PD remains elusive, remarkable advances have been made in understanding the possible causative mechanisms of PD pathogenesis. An explosion of discoveries during the past two decades has led to the identification of several autosomal dominant and recessive genes that cause familial forms of PD. The investigations of these familial PD gene products have shed considerable insights into the molecular pathogenesis of the more common sporadic PD. A growing body of evidence suggests that the etiology of PD is multifactorial and involves a complex interplay between genetic and environmental factors. Substantial evidence from human tissues, genetic and toxin-induced animal and cellular models indicates that mitochondrial dysfunction plays a central role in the pathophysiology of PD. Deficits in mitochondrial functions due to bioenergetics defects, alterations in the mitochondrial DNA, generation of reactive oxygen species, aberrant calcium homeostasis, and anomalies in mitochondrial dynamics and quality control are implicated in the underlying mechanisms of neuronal cell death in PD. In this review, we discuss how familial PD-linked genes and environmental factors interface the pathways regulating mitochondrial functions and thereby potentially converge both familial and sporadic PD at the level of mitochondrial integrity. We also provide an overview of the status of therapeutic strategies targeting mitochondrial dysfunction in PD. Unraveling potential pathways that influence mitochondrial homeostasis in PD may hold the key to therapeutic intervention for this debilitating neurodegenerative movement disorder.
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Affiliation(s)
| | - Bobby Thomas
- Departments of Pharmacology and Toxicology, Augusta, GA 30912, United States; Neurology Medical College of Georgia, Augusta University, Augusta, GA 30912, United States.
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Christen F, Desrosiers V, Dupont-Cyr BA, Vandenberg GW, Le François NR, Tardif JC, Dufresne F, Lamarre SG, Blier PU. Thermal tolerance and thermal sensitivity of heart mitochondria: Mitochondrial integrity and ROS production. Free Radic Biol Med 2018; 116:11-18. [PMID: 29294390 DOI: 10.1016/j.freeradbiomed.2017.12.037] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/17/2017] [Accepted: 12/29/2017] [Indexed: 12/21/2022]
Abstract
Cardiac mitochondrial metabolism provides 90% of the ATP necessary for the contractile exertion of the heart muscle. Mitochondria are therefore assumed to play a pivotal role in heart failure (HF), cardiovascular disease and ageing. Heat stress increases energy metabolism and oxygen demand in tissues throughout the body and imposes a major challenge on the heart, which is suspected of being the first organ to fail during heat stress. The underlying mechanisms inducing heart failure are still unclear. To pinpoint the processes implicated in HF during heat stress, we measured mitochondrial respiration rates and hydrogen peroxide production of isolated Arctic char (Salvelinus alpinus) heart mitochondria at 4 temperatures: 10°C (acclimation), 15°C, 20°C and 25°C (just over critical maximum). We found that at temperature ranges causing the loss of an organism's general homeostasis (between 20°C and 25°C) and with a substrate combination close to physiological conditions, the heat-induced increase in mitochondrial oxygen consumption levels off. More importantly, at the same state, hydrogen peroxide efflux increased by almost 50%. In addition, we found that individuals with low mitochondrial respiration rates produced more hydrogen peroxide at 10°C, 15°C and 20°C. This could indicate that individuals with cardiac mitochondria having a low respiratory capacity, have a more fragile heart and will be more prone to oxidative stress and HF, and less tolerant to temperature changes and other stressors. Our results show that, at temperatures close to the thermal limit, mitochondrial capacity is compromised and ROS production rates increase. This could potentially alter the performance of the cardiac muscle and lead to heat-induced HF underlining the important role that mitochondria play in setting thermal tolerance limits.
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Affiliation(s)
- Felix Christen
- Université du Québec à Rimouski, Département de biologie, Rimouski, Québec, Canada G5L3A1
| | - Véronique Desrosiers
- Université du Québec à Rimouski, Département de biologie, Rimouski, Québec, Canada G5L3A1
| | - Bernard A Dupont-Cyr
- Université du Québec à Rimouski, Département de biologie, Rimouski, Québec, Canada G5L3A1
| | - Grant W Vandenberg
- Université Laval, Département de sciences animales, Québec, Canada G1V 0A6
| | | | - Jean-Claude Tardif
- Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada H1T 1C8
| | - France Dufresne
- Université du Québec à Rimouski, Département de biologie, Rimouski, Québec, Canada G5L3A1
| | - Simon G Lamarre
- Université de Moncton, Département de biologie, Moncton, New-Brunswick, Canada E1A 3E9
| | - Pierre U Blier
- Université du Québec à Rimouski, Département de biologie, Rimouski, Québec, Canada G5L3A1.
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23
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Integrated microarray analysis provided a new insight of the pathogenesis of Parkinson’s disease. Neurosci Lett 2018; 662:51-58. [DOI: 10.1016/j.neulet.2017.09.051] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 08/25/2017] [Accepted: 09/25/2017] [Indexed: 12/14/2022]
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24
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Saavedra J. Beneficial effects of Angiotensin II receptor blockers in brain disorders. Pharmacol Res 2017; 125:91-103. [DOI: 10.1016/j.phrs.2017.06.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 06/17/2017] [Accepted: 06/28/2017] [Indexed: 12/11/2022]
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25
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Mitochondrial form, function and signalling in aging. Biochem J 2017; 473:3421-3449. [PMID: 27729586 DOI: 10.1042/bcj20160451] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 06/17/2016] [Indexed: 02/07/2023]
Abstract
Aging is often accompanied by a decline in mitochondrial mass and function in different tissues. Additionally, cell resistance to stress is frequently found to be prevented by higher mitochondrial respiratory capacity. These correlations strongly suggest mitochondria are key players in aging and senescence, acting by regulating energy homeostasis, redox balance and signalling pathways central in these processes. However, mitochondria display a wide array of functions and signalling properties, and the roles of these different characteristics are still widely unexplored. Furthermore, differences in mitochondrial properties and responses between tissues and cell types, and how these affect whole body metabolism are also still poorly understood. This review uncovers aspects of mitochondrial biology that have an impact upon aging in model organisms and selected mammalian cells and tissues.
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26
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Beutner G, Porter GA. Analyzing Supercomplexes of the Mitochondrial Electron Transport Chain with Native Electrophoresis, In-gel Assays, and Electroelution. J Vis Exp 2017. [PMID: 28605384 DOI: 10.3791/55738] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The mitochondrial electron transport chain (ETC) transduces the energy derived from the breakdown of various fuels into the bioenergetic currency of the cell, ATP. The ETC is composed of 5 massive protein complexes, which also assemble into supercomplexes called respirasomes (C-I, C-III, and C-IV) and synthasomes (C-V) that increase the efficiency of electron transport and ATP production. Various methods have been used for over 50 years to measure ETC function, but these protocols do not provide information on the assembly of individual complexes and supercomplexes. This protocol describes the technique of native gel polyacrylamide gel electrophoresis (PAGE), a method that was modified more than 20 years ago to study ETC complex structure. Native electrophoresis permits the separation of ETC complexes into their active forms, and these complexes can then be studied using immunoblotting, in-gel assays (IGA), and purification by electroelution. By combining the results of native gel PAGE with those of other mitochondrial assays, it is possible to obtain a completer picture of ETC activity, its dynamic assembly and disassembly, and how this regulates mitochondrial structure and function. This work will also discuss limitations of these techniques. In summary, the technique of native PAGE, followed by immunoblotting, IGA, and electroelution, presented below, is a powerful way to investigate the functionality and composition of mitochondrial ETC supercomplexes.
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Affiliation(s)
- Gisela Beutner
- Department of Pediatrics-Division Cardiology, University of Rochester
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27
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Kuter K, Olech Ł, Głowacka U. Prolonged Dysfunction of Astrocytes and Activation of Microglia Accelerate Degeneration of Dopaminergic Neurons in the Rat Substantia Nigra and Block Compensation of Early Motor Dysfunction Induced by 6-OHDA. Mol Neurobiol 2017; 55:3049-3066. [PMID: 28466266 PMCID: PMC5842510 DOI: 10.1007/s12035-017-0529-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 04/06/2017] [Indexed: 01/01/2023]
Abstract
Progressive degeneration of dopaminergic neurons in the substantia nigra (SN) is the underlying cause of Parkinson’s disease (PD). The disease in early stages is difficult to diagnose, because behavioral deficits are masked by compensatory processes. Astrocytic and microglial pathology precedes motor symptoms. Besides supportive functions of astrocytes in the brain, their role in PD is unrecognized. Prolonged dysfunction of astrocytes could increase the vulnerability of dopaminergic neurons and advance their degeneration during aging. The aim of our studies was to find out whether prolonged dysfunction of astrocytes in the SN is deleterious for neuronal functioning and if it influences their survival after toxic insult or changes the compensatory potential of the remaining neurons. In Wistar rat model, we induced activation, prolonged dysfunction, and death of astrocytes by chronic infusion of fluorocitrate (FC) into the SN, without causing dopaminergic neuron degeneration. Strongly enhanced dopamine turnover in the SN after 7 days of FC infusion was induced probably by microglia activated in response to astrocyte stress. The FC effect was reversible, and astrocyte pool was replenished 3 weeks after the end of infusion. Importantly, the prolonged astrocyte dysfunction and microglia activation accelerated degeneration of dopaminergic neurons induced by 6-hydroxydopamine and blocked the behavioral compensation normally observed after moderate neurodegeneration. Impaired astrocyte functioning, activation of microglia, diminishing compensatory capability of the dopaminergic system, and increasing neuronal vulnerability to external insults could be the underlying causes of PD. This animal model of prolonged astrocyte dysfunction can be useful for in vivo studies of glia–microglia–neuron interaction.
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Affiliation(s)
- Katarzyna Kuter
- Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343, Krakow, Poland.
| | - Łukasz Olech
- Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343, Krakow, Poland
| | - Urszula Głowacka
- Institute of Pharmacology, Polish Academy of Sciences, 12 Smętna St., 31-343, Krakow, Poland
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Wang J, Liu H, Zhang X, Li X, Geng L, Zhang H, Zhang Q. Sulfated Hetero-Polysaccharides Protect SH-SY5Y Cells from H₂O₂-Induced Apoptosis by Affecting the PI3K/Akt Signaling Pathway. Mar Drugs 2017; 15:md15040110. [PMID: 28383489 PMCID: PMC5408256 DOI: 10.3390/md15040110] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/23/2017] [Accepted: 04/04/2017] [Indexed: 02/06/2023] Open
Abstract
Parkinson’s disease (PD) is one of the most common neurodegenerative diseases. Recent studies suggest that sulfated hetero-polysaccharides (UF) protect against developing PD. However, the detailed mechanisms of how UF suppress neuronal death have not been fully elucidated. We investigated the cytoprotective mechanisms of UF using human dopaminergic neuroblastoma SH-SY5Y cells as a PD model. UF prevented H2O2-induced apoptotic cell death in SH-SY5Y cells in a dose-dependent manner. An examination of the PI3K/Akt upstream pathway revealed that UF-pretreated cells showed a decreased relative density of Akt, PI3K, and TrkA, and increased the phosphorylation of Akt, PI3K, and NGF; the PI3K inhibitor, LY294002, partially prevented this effect. An examination of the PI3K/Akt downstream pathway revealed the increased expression of the apoptosis-associated markers Bax, p53, CytC, and GSK3β, and the decreased expression of Bcl-2 in UF-treated cells. UF-treated cells also exhibited decreased caspase-3, caspase-8, and caspase-9 activities, which induced cell apoptosis. Our results demonstrate that UF affect the PI3K/Akt pathway, as well as downstream signaling. Therefore, the UF-mediated activation of PI3K/Akt could provide a new potential therapeutic strategy for neurodegenerative diseases associated with oxidative injury. These findings contribute to a better understanding of the critical roles of UF in the treatment of PD.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Huaide Liu
- School of Life Sciences, Nantong University, Seyuan Road 9, Nantong 226019, China.
| | - Xue Zhang
- Taian City Central Hospital, Taian 271000, China.
| | - Xinpeng Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Lihua Geng
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Hong Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Quanbin Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
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Zárate S, Astiz M, Magnani N, Imsen M, Merino F, Álvarez S, Reinés A, Seilicovich A. Hormone deprivation alters mitochondrial function and lipid profile in the hippocampus. J Endocrinol 2017; 233:1-14. [PMID: 28130408 DOI: 10.1530/joe-16-0451] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 12/22/2022]
Abstract
Mitochondrial dysfunction is a common hallmark in aging. In the female, reproductive senescence is characterized by loss of ovarian hormones, many of whose neuroprotective effects converge upon mitochondria. The functional integrity of mitochondria is dependent on membrane fatty acid and phospholipid composition, which are also affected during aging. The effect of long-term ovarian hormone deprivation upon mitochondrial function and its putative association with changes in mitochondrial membrane lipid profile in the hippocampus, an area primarily affected during aging and highly responsive to ovarian hormones, is unknown. To this aim, Wistar adult female rats were ovariectomized or sham-operated. Twelve weeks later, different parameters of mitochondrial function (O2 uptake, ATP production, membrane potential and respiratory complex activities) as well as membrane phospholipid content and composition were evaluated in hippocampal mitochondria. Chronic ovariectomy reduced mitochondrial O2 uptake and ATP production rates and induced membrane depolarization during active respiration without altering the activity of respiratory complexes. Mitochondrial membrane lipid profile showed no changes in cholesterol levels but higher levels of unsaturated fatty acids and a higher peroxidizability index in mitochondria from ovariectomized rats. Interestingly, ovariectomy also reduced cardiolipin content and altered cardiolipin fatty acid profile leading to a lower peroxidizability index. In conclusion, chronic ovarian hormone deprivation induces mitochondrial dysfunction and changes in the mitochondrial membrane lipid profile comparable to an aging phenotype. Our study provides insights into ovarian hormone loss-induced early lipidomic changes with bioenergetic deficits in the hippocampus that may contribute to the increased risk of Alzheimer's disease and other age-associated disorders observed in postmenopause.
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Affiliation(s)
- Sandra Zárate
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET)Buenos Aires, Argentina
- Departamento de HistologíaEmbriología, Biología Celular y Genética, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mariana Astiz
- Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP, UNLP-CONICET) and Cátedra de Bioquímica y Biología MolecularFacultad de Medicina, Universidad Nacional de La Plata, La Plata, Argentina
| | - Natalia Magnani
- Instituto de Bioquímica y Medicina Molecular (IBIMOL, UBA-CONICET)Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mercedes Imsen
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET)Buenos Aires, Argentina
| | - Florencia Merino
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET)Buenos Aires, Argentina
| | - Silvia Álvarez
- Instituto de Bioquímica y Medicina Molecular (IBIMOL, UBA-CONICET)Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Analía Reinés
- Instituto de Biología Celular y Neurociencias 'Prof. E. De Robertis' (IBCN, UBA-CONICET)Facultad de Medicina and Cátedra de Farmacología, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Adriana Seilicovich
- Instituto de Investigaciones Biomédicas (INBIOMED, UBA-CONICET)Buenos Aires, Argentina
- Departamento de HistologíaEmbriología, Biología Celular y Genética, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
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30
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Antidepressant activity of zinc: Further evidence for the involvement of the serotonergic system. Pharmacol Rep 2017; 69:456-461. [PMID: 28319749 DOI: 10.1016/j.pharep.2017.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/11/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND The present study sought to further evaluate the role of the serotonergic system especially the postsynaptic 5-HT1A receptors (5-HT1AR) in the mechanism of antidepressant action of zinc. METHODS Messenger RNA (mRNA), protein level, and 5-HT1AR density as well as the rate of monoamine (dopamine, DA, and serotonin) metabolism in the prefrontal cortex (PFC) and hippocampus (Hp) of rats subjected to acute and chronic (21days) zinc (5mg Zn/kg) treatment were measured. RESULTS Acute or chronic zinc treatment did not induce any changes in 5-HT1AR mRNA levels in the PFC or Hp of rats. However, chronic zinc treatment induced increases in both 5-HT1AR protein levels and density of 5-HT1A receptor binding sites in the Hp of rats. Chronic zinc treatment also increased tissue levels of serotonin metabolite and turnover in the rat Hp. On the other hand, DA, DOPAC, HVA tissue levels increased while DOPAC/DA and 3MT/DA decreased in the PFC of rats after chronic zinc treatment. Acute treatment induced increases only in tissue levels of DOPAC, and DOPAC/DA. CONCLUSIONS Our results confirm that the antidepressant effects of zinc are mediated in concert with the modulation of the serotonergic system including postsynaptic 5-HT1ARs and allude to a possible involvement of dopaminergic neurotransmission in this action.
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31
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Kuter K, Kratochwil M, Marx SH, Hartwig S, Lehr S, Sugawa MD, Dencher NA. Native DIGE proteomic analysis of mitochondria from substantia nigra and striatum during neuronal degeneration and its compensation in an animal model of early Parkinson's disease. Arch Physiol Biochem 2016; 122:238-256. [PMID: 27467289 DOI: 10.1080/13813455.2016.1197948] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cause of Parkinson's disease (PD) is still not understood. Motor symptoms are not observed at early stages of disease due to compensatory processes. Dysfunction of mitochondria was indicated already at preclinical PD. Selective toxin 6-OHDA was applied to kill dopaminergic neurons in substantia nigra and disturb neuronal transmission in striatum. Early phase of active degeneration and later stage, when surviving cells adapted to function normally, were analysed. 2D BN/SDS difference gel electrophoresis (DIGE) of mitochondrial proteome enabled to point out crucial processes involved at both time-points in dopaminergic structures. Marker proteins such as DPYSL2, HSP60, ATP1A3, EAAT2 indicated structural remodelling, cytoskeleton rearrangement, organelle trafficking, axon outgrowth and regeneration. Adaptations in dopaminergic and glutamatergic neurotransmission, recycling of synaptic vesicles, along with enlargement of mitochondria mass were proposed as causative for compensation. Changed expression of carbohydrates metabolism and oxidative phosphorylation proteins were described, including their protein-protein interactions and supercomplex assembly.
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Affiliation(s)
- Katarzyna Kuter
- a Department of Neuropsychopharmacology , Polish Academy of Sciences , Kraków , Poland
- b Physical Biochemistry, Department of Chemistry, Technische Universität Darmstadt , Darmstadt , Germany
| | - Manuela Kratochwil
- b Physical Biochemistry, Department of Chemistry, Technische Universität Darmstadt , Darmstadt , Germany
| | - Sven-Hendric Marx
- b Physical Biochemistry, Department of Chemistry, Technische Universität Darmstadt , Darmstadt , Germany
| | - Sonja Hartwig
- c Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Center at the Heinrich-Heine-University Düsseldorf, Leibniz Center for Diabetes Research , Düsseldorf , Germany
- d German Center for Diabetes Research (DZD) , München, Neuherberg , Germany , and
| | - Stephan Lehr
- c Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Center at the Heinrich-Heine-University Düsseldorf, Leibniz Center for Diabetes Research , Düsseldorf , Germany
- d German Center for Diabetes Research (DZD) , München, Neuherberg , Germany , and
| | - Michiru D Sugawa
- b Physical Biochemistry, Department of Chemistry, Technische Universität Darmstadt , Darmstadt , Germany
- e Clinical Neurobiology, Charité-Universitätsmedizin , Berlin , Germany
| | - Norbert A Dencher
- b Physical Biochemistry, Department of Chemistry, Technische Universität Darmstadt , Darmstadt , Germany
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Moreno-Loshuertos R, Enríquez JA. Respiratory supercomplexes and the functional segmentation of the CoQ pool. Free Radic Biol Med 2016; 100:5-13. [PMID: 27105951 DOI: 10.1016/j.freeradbiomed.2016.04.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/15/2016] [Accepted: 04/17/2016] [Indexed: 12/14/2022]
Abstract
The evidence accumulated during the last fifteen years on the existence of respiratory supercomplexes and their proposed functional implications has changed our understanding of the OXPHOS system complexity and regulation. The plasticity model is a point of encounter accounting for the apparently contradictory experimental observations claimed to support either the solid or the fluid models. It allows the explanation of previous observations such as the dependence between respiratory complexes, supercomplex assembly dynamics or the existence of different functional ubiquinone pools. With the general acceptation of respiratory supercomplexes as true entities, this review evaluates the supporting evidences in favor or against the existence of different ubiquinone pools and the relationship between supercomplexes, ROS production and pathology.
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Affiliation(s)
- Raquel Moreno-Loshuertos
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna, 12, Zaragoza 50009, Spain
| | - José Antonio Enríquez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Melchor Fernández Almagro, 3, 28029 Madrid, Spain; Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Pedro Cerbuna, 12, Zaragoza 50009, Spain.
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Agarwal S, Yadav A, Chaturvedi RK. Peroxisome proliferator-activated receptors (PPARs) as therapeutic target in neurodegenerative disorders. Biochem Biophys Res Commun 2016; 483:1166-1177. [PMID: 27514452 DOI: 10.1016/j.bbrc.2016.08.043] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/21/2016] [Accepted: 08/07/2016] [Indexed: 01/06/2023]
Abstract
Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors and they serve to be a promising therapeutic target for several neurodegenerative disorders, which includes Parkinson disease, Alzheimer's disease, Huntington disease and Amyotrophic Lateral Sclerosis. PPARs play an important role in the downregulation of mitochondrial dysfunction, proteasomal dysfunction, oxidative stress, and neuroinflammation, which are the major causes of the pathogenesis of neurodegenerative disorders. In this review, we discuss about the role of PPARs as therapeutic targets in neurodegenerative disorders. Several experimental approaches suggest potential application of PPAR agonist as well as antagonist in the treatment of neurodegenerative disorders. Several epidemiological studies found that the regular usage of PPAR activating non-steroidal anti-inflammatory drugs is effective in decreasing the progression of neurodegenerative diseases including PD and AD. We also reviewed the neuroprotective effects of PPAR agonists and associated mechanism of action in several neurodegenerative disorders both in vitro as well as in vivo animal models.
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Affiliation(s)
- Swati Agarwal
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Lucknow Campus, Lucknow, India
| | - Anuradha Yadav
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Lucknow Campus, Lucknow, India
| | - Rajnish Kumar Chaturvedi
- Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Lucknow Campus, Lucknow, India.
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