151
|
Li K, Xu YQ, Feng L, Liu SS. Assessing the influence of the genetically modified factor on mixture toxicological interactions in Caenorhabditis elegans: Comparison between wild type and a SOD type. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:872-879. [PMID: 30041160 DOI: 10.1016/j.envpol.2018.06.107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/11/2018] [Accepted: 06/30/2018] [Indexed: 05/03/2023]
Abstract
How to evaluate the ecological risk of transgenic technology is a focus of scientists because of the safety concerns raised by genetically modified (GM) organisms. Nevertheless, most studies are based on individual chemicals and always analyze the GM organism as a type of toxicant. In this study, we changed the approach and used GM organisms as the test objects with normal chemical exposure. Three types of chemicals (two substituted phenols, 4-chlorophenol and 4-nitrophenol; two ionic liquids, 1-butylpyridinium chloride and 1-butylpyridinium bromide; two pesticides, dichlorvos and glyphosate) were used to construct a six-component mixture system. The lethality to wild-type (N2) and sod-3::GFP (SOD-3) Caenorhabditis elegans was determined when they were exposed to the same mixture system after 12 and 24 h. The results showed that the pEC50 values of all of the single chemicals on SOD-3 were greater than those on N2 at 24 h. The toxicities of the single chemicals and nine mixture rays on the two strains increased with time. Notably, we discovered a significant difference between the two strains; time-dependent synergism occurred in mixtures on N2, but time-dependent antagonism occurred in mixtures on SOD-3. Finally, the strength of the synergism or antagonism turned to additive action on the two strains as the exposure time increased. These findings illustrated that the GM factor of the nematode influenced the mixture toxicological interaction at some exposure times. Compared with N2, SOD-3 were more sensitive to stress or toxic reactions. Therefore, the influence of the GM factor on mixture toxicological interactions in environmental risk assessment must be considered.
Collapse
Affiliation(s)
- Kai Li
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Ya-Qian Xu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Li Feng
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Shu-Shen Liu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
| |
Collapse
|
152
|
Wang SY, Cai GY, Chen XM. Energy restriction in renal protection. Br J Nutr 2018; 120:1149-1158. [PMID: 30401006 PMCID: PMC6316363 DOI: 10.1017/s0007114518002684] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 07/22/2018] [Accepted: 08/20/2018] [Indexed: 02/06/2023]
Abstract
Energy restriction (ER) has been widely studied as a novel intervention, and its ability to prolong life has been fully demonstrated. For example, ER can significantly extend the lifespans of model flies, worms, rodents and other mammals. The role of ER in renal protection has also been elucidated. In preclinical studies, adjusting total energy intake or consumption of specific nutrients has prophylactic or therapeutic effects on ageing-related kidney disease and acute and chronic kidney injury. Amino acid restriction has gradually attracted attention. ER mimetics have also been studied in depth. The protective mechanisms of ER and ER mimetics for renal injury include increasing AMP-activated protein kinase and sirtuin type 1 (Sirt1) levels and autophagy and reducing mammalian target of rapamycin, inflammation and oxidative stress. However, the renal protective effect of ER has mostly been investigated in rodent models, and the role of ER in patients cannot be determined due to the lack of large randomised controlled trials. To protect the kidney, the mechanism of ER must be thoroughly researched, and more accurate diet or drug interventions need to be identified.
Collapse
Affiliation(s)
| | - Guang-Yan Cai
- State Key Laboratory of Kidney Diseases, Department of Nephrology, National Clinical Research Center for Kidney Diseases, Chinese PLA Institute of Nephrology, Chinese PLA General Hospital, Beijing 100853, People’s Republic of China
| | | |
Collapse
|
153
|
Mrakic-Sposta S, Di Santo SG, Franchini F, Arlati S, Zangiacomi A, Greci L, Moretti S, Jesuthasan N, Marzorati M, Rizzo G, Sacco M, Vezzoli A. Effects of Combined Physical and Cognitive Virtual Reality-Based Training on Cognitive Impairment and Oxidative Stress in MCI Patients: A Pilot Study. Front Aging Neurosci 2018; 10:282. [PMID: 30327596 PMCID: PMC6174250 DOI: 10.3389/fnagi.2018.00282] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/29/2018] [Indexed: 01/15/2023] Open
Abstract
The growing elderly population and the increased incidence of mild cognitive impairment (MCI) and Alzheimer's disease (AD) call for the improvement of the quality and the efficacy of the healthcare and social support services. Exercise and cognitive stimulation have been demonstrated to mitigate cognitive impairment and oxidative stress (OxS) has been recognized as a factor that contributes to the advancement of neurodegenerative diseases. Taking these aspects into account, the impact of a novel virtual reality (VR)-based program combining aerobic exercise and cognitive training has been evaluated in the pilot study proposed here. Ten patients (aged 73.3 ± 5.7 years) with MCI (Mini-Mental State Examination, MMSE: 23.0 ± 3.4) were randomly assigned to either 6 weeks physical and cognitive training (EXP) or control (CTR) group. Evaluations of cognitive profile, by a neuropsychological tests battery, and OxS, by collection of blood and urine samples, were performed before and at the end of the experimental period. The assessment of the patients' opinions toward the intervention was investigated through questionnaires. EXP group showed a tendency towards improvements in the MMSE, in visual-constructive test and visuo-spatial tests of attention, while CTR worsened. EXP group showed a greater improvement than CTR in the executive test, memory functions and verbal fluency. No statistical significance was obtained when comparing within and between both the groups, probably due to small number of subjects examined, which amplifies the effect of the slight heterogeneity in scores recorded. Despite a greater worsening of Daily Living Activities tests, all participants reported a better performance in real life, thanks to the elicited self-perceived improvement. After training intervention OxS (i.e., reactive oxygen species (ROS) production, oxidative damage of lipids and DNA) decreased resulting in significantly (range p < 0.05-0.001) lower in EXP vs. CTR group. Although not conclusive, the recorded effects in the present study are promising and suggest that this proposal would be a useful tool in support of cognitive training reducing OxS too. However, further studies on larger scale samples of patients are needed.
Collapse
Affiliation(s)
- Simona Mrakic-Sposta
- Consiglio Nazionale delle Ricerche (IBFM-CNR), Istituto di Bioimmagini e Fisiologia Molecolare, Milan, Italy
| | | | | | - Sara Arlati
- Consiglio Nazionale delle Ricerche (ITIA-CNR), Istituto di Tecnologie Industriali e Automazione, Milan, Italy
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
| | - Andrea Zangiacomi
- Consiglio Nazionale delle Ricerche (ITIA-CNR), Istituto di Tecnologie Industriali e Automazione, Milan, Italy
| | - Luca Greci
- Consiglio Nazionale delle Ricerche (ITIA-CNR), Istituto di Tecnologie Industriali e Automazione, Milan, Italy
| | - Sarah Moretti
- Consiglio Nazionale delle Ricerche (IBFM-CNR), Istituto di Bioimmagini e Fisiologia Molecolare, Milan, Italy
| | - Nithiya Jesuthasan
- Consiglio Nazionale delle Ricerche (ITB-CNR), Istituto di Tecnologie Biomediche, Milan, Italy
| | - Mauro Marzorati
- Consiglio Nazionale delle Ricerche (IBFM-CNR), Istituto di Bioimmagini e Fisiologia Molecolare, Milan, Italy
| | - Giovanna Rizzo
- Consiglio Nazionale delle Ricerche (IBFM-CNR), Istituto di Bioimmagini e Fisiologia Molecolare, Milan, Italy
| | - Marco Sacco
- Consiglio Nazionale delle Ricerche (ITIA-CNR), Istituto di Tecnologie Industriali e Automazione, Milan, Italy
| | - Alessandra Vezzoli
- Consiglio Nazionale delle Ricerche (IBFM-CNR), Istituto di Bioimmagini e Fisiologia Molecolare, Milan, Italy
| |
Collapse
|
154
|
Ghorbanian D, Gol M, Pourghasem M, Faraji J, Pourghasem K, Soltanpour N. Spatial Memory and Antioxidant Protective Effects of Raisin (Currant) in Aged Rats. Prev Nutr Food Sci 2018; 23:196-205. [PMID: 30386747 PMCID: PMC6195892 DOI: 10.3746/pnf.2018.23.3.196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/04/2018] [Indexed: 01/23/2023] Open
Abstract
Diets rich in fruits and vegetables can prevent age-related diseases. This research was conducted to evaluate the effects of raisin consumption on the spatial memory and morphometric parameters of brain tissue in aging rats. Old rats (20 months of age) were divided into 2 groups: control and raisin, with 6 rats in each group. The raisin group received 6 g of raisins daily in addition to their food and water for 90 days. After treatments, all animals were evaluated by behavioral tests to assess spatial memory and learning alongside other tests including the ferric reducing antioxidant power (FRAP), malondialdehyde, and histological examinations. The results showed that there are significant differences in the Morris water task and passive avoidance learning of behavioral tests and biochemical tests (FRAP and thiobarbituric acid reactive substances) between the two groups. The histological study indicated that the cell count of the hippocampus, the diameter of the lateral ventricle, and area of the corpus callosum in the raisin group changed in comparison with the control group but they were not significant. The results demonstrated that raisins significantly raise antioxidant levels in blood and promotes cognitive and motor performance in aging rats.
Collapse
Affiliation(s)
- Davoud Ghorbanian
- Cellular and Molecular Biology Research Center (CMBRC), Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran.,Department of Anatomical Sciences, Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran
| | - Mohammed Gol
- Cellular and Molecular Biology Research Center (CMBRC), Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran.,Department of Anatomical Sciences, Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran
| | - Mohsen Pourghasem
- Cellular and Molecular Biology Research Center (CMBRC), Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran.,Department of Anatomical Sciences, Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran
| | - Jamshid Faraji
- Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Kaveh Pourghasem
- Department of Medical Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Nabiollah Soltanpour
- Cellular and Molecular Biology Research Center (CMBRC), Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran.,Department of Anatomical Sciences, Babol University of Medical Sciences, Babol 47176-47745, Islamic Republic of Iran
| |
Collapse
|
155
|
M Cordeiro R. Reactive Oxygen and Nitrogen Species at Phospholipid Bilayers: Peroxynitrous Acid and Its Homolysis Products. J Phys Chem B 2018; 122:8211-8219. [PMID: 30078319 DOI: 10.1021/acs.jpcb.8b07158] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Peroxynitrite is a powerful and long-lived oxidant generated in vivo. Peroxynitrous acid (ONOOH), its protonated form, may penetrate into phospholipid bilayers and undergo homolytic cleavage to nitrogen dioxide (·NO2) and hydroxyl radicals (·OH), causing severe nitro-oxidative damage. The membrane environment is thought to influence ONOOH reactions, but the mechanisms remain speculative. Most experimental techniques lack the level of resolution required to keep track of the motion of very reactive species and their interactions with the membrane. Here, we performed molecular dynamics simulations of the permeation, interactions, and dynamics of ONOOH and its homolysis products in the phospholipid membrane environment. We started by developing an ONOOH model that successfully accounted for its conformational equilibria and solvation energies. Membrane permeation of ONOOH was accompanied by conformational changes. ONOOH exhibited a strong tendency to bind to and accumulate at the membrane headgroup region. There, ONOOH homolysis led to ·NO2 radicals, which in turn partitioned to the membrane interior. About one-third of the ·OH radicals readily escaped to the aqueous phase within 1 ns. However, a significant number of ·OH radicals became trapped at the lipid headgroup region for a longer period. The possible implications for membrane-based nitration and oxidation processes were discussed.
Collapse
Affiliation(s)
- Rodrigo M Cordeiro
- Centro de Ciências Naturais e Humanas , Universidade Federal do ABC , Avenida dos Estados 5001 , CEP 09210-580 Santo André , São Paulo , Brazil
| |
Collapse
|
156
|
Kolaj I, Imindu Liyanage S, Weaver DF. Phenylpropanoids and Alzheimer's disease: A potential therapeutic platform. Neurochem Int 2018; 120:99-111. [PMID: 30098379 DOI: 10.1016/j.neuint.2018.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/01/2018] [Accepted: 08/06/2018] [Indexed: 12/21/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder, characterized by progressive dementia, neuroinflammation and the accumulation of intracellular neurofibrillary tangles and extracellular plaques. The etiology of AD is unclear, but is generally attributed to four leading hypotheses: (i) abnormal folding and aggregation of amyloid-β (Aβ)/tau proteins (ii) activation of the innate immune system, (iii) mitochondrial dysfunction, and (iv) oxidative stress. To date, therapeutic strategies have largely focused on Aβ-centric targets; however, the repeated failure of clinical trials and the continued lack of a disease-modifying therapy demand novel, multifaceted approaches. Natural products are common molecular platforms in drug development; in AD, compounds from the plant phenylpropanoid metabolic pathway have yielded promising associations. Herein, we review developments in the pathogenesis of AD and the metabolism of phenylpropanoids in plants. We further discuss the role of these metabolites as relevant to the four leading mechanisms of AD pathogenesis, and observe multiple protective effects among phenylpropanoids against AD onset and progression.
Collapse
Affiliation(s)
- Igri Kolaj
- Krembil Research Institute, University Health Network, Krembil Discovery Tower, 60 Leonard Avenue, 4KD-473, Toronto, ON, M5T 0S8, Canada; Department of Chemistry, University of Toronto, 80 St.George Street, Toronto, ON, M5S 3H6, Canada.
| | - S Imindu Liyanage
- Krembil Research Institute, University Health Network, Krembil Discovery Tower, 60 Leonard Avenue, 4KD-473, Toronto, ON, M5T 0S8, Canada.
| | - Donald F Weaver
- Krembil Research Institute, University Health Network, Krembil Discovery Tower, 60 Leonard Avenue, 4KD-473, Toronto, ON, M5T 0S8, Canada; Department of Chemistry, University of Toronto, 80 St.George Street, Toronto, ON, M5S 3H6, Canada; Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
| |
Collapse
|
157
|
|
158
|
Jankauskas SS, Silachev DN, Andrianova NV, Pevzner IB, Zorova LD, Popkov VA, Plotnikov EY, Zorov DB. Aged kidney: can we protect it? Autophagy, mitochondria and mechanisms of ischemic preconditioning. Cell Cycle 2018; 17:1291-1309. [PMID: 29963970 DOI: 10.1080/15384101.2018.1482149] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The anti-aging strategy is one of the main challenges of the modern biomedical science. The term "aging" covers organisms, cells, cellular organelles and their constituents. In general term, aging system admits the existence of nonfunctional structures which by some reasons have not been removed by a clearing system, e.g., through autophagy/mitophagy marking and destroying unwanted cells or mitochondria. This directly relates to the old kidney which normal functioning is critical for the viability of the organism. One of the main problems in biomedical studies is that in their majority, young organisms serve as a standard with further extrapolation on the aged system. However, some protective systems, which demonstrate their efficiency in young systems, lose their beneficial effect in aged organisms. It is true for ischemic preconditioning of the kidney, which is almost useless for an old kidney. The pharmacological intervention could correct the defects of the senile system provided that the complete understanding of all elements involved in aging will be achieved. We discuss critical elements which determine the difference between young and old phenotypes and give directions to prevent or cure lesions occurring in aged organs including kidney. ABBREVIATIONS AKI: acute kidney injury; I/R: ischemia/reperfusion; CR: caloric restriction; ROS: reactive oxygen species; RC: respiratory chain.
Collapse
Affiliation(s)
- Stanislovas S Jankauskas
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation
| | - Denis N Silachev
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,b Department of Molecular Mechanisms of Adaptation , V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology , Moscow , Russian Federation
| | - Nadezda V Andrianova
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,c Faculty of Bioengineering and Bioinformatics , M.V. Lomonosov Moscow State University , Moscow , Russian Federation
| | - Irina B Pevzner
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,b Department of Molecular Mechanisms of Adaptation , V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology , Moscow , Russian Federation
| | - Ljubava D Zorova
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,b Department of Molecular Mechanisms of Adaptation , V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology , Moscow , Russian Federation
| | - Vasily A Popkov
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,c Faculty of Bioengineering and Bioinformatics , M.V. Lomonosov Moscow State University , Moscow , Russian Federation
| | - Egor Y Plotnikov
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,b Department of Molecular Mechanisms of Adaptation , V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology , Moscow , Russian Federation
| | - Dmitry B Zorov
- a A.N. Belozersky Institute of Physico-Chemical Biology , M.V. Lomonosov Moscow State University , Moscow , Russian Federation.,b Department of Molecular Mechanisms of Adaptation , V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology , Moscow , Russian Federation
| |
Collapse
|
159
|
Affiliation(s)
- Daniel P. Cardinali
- Departmento de Docencia e Investigación, Pontificia Universidad Católica Argentina, Buenos Aires, Argentina
| |
Collapse
|
160
|
Iqbal J, Zhang K, Jin N, Zhao Y, Liu Q, Ni J, Shen L. Effect of Sodium Selenate on Hippocampal Proteome of 3×Tg-AD Mice-Exploring the Antioxidant Dogma of Selenium against Alzheimer's Disease. ACS Chem Neurosci 2018; 9:1637-1651. [PMID: 29641182 DOI: 10.1021/acschemneuro.8b00034] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Selenium (Se), an antioxidant trace element, is an important nutrient for maintaining brain functions and is reported to be involved in Alzheimer's disease (AD) pathologies. The present study has been designed to elucidate the protein changes in hippocampus of 3×Tg-AD mice after supplementing sodium selenate as an inorganic source of selenium. By using iTRAQ proteomics technology, 113 differentially expressed proteins (DEPs) are found in AD/WT mice with 37 upregulated and 76 downregulated proteins. Similarly, in selenate-treated 3×Tg-AD (ADSe/AD) mice, 115 DEPs are found with 98 upregulated and 17 downregulated proteins. The third group of mice (ADSe/WT) showed 75 DEPs with 46 upregulated and 29 downregulated proteins. Among these results, 42 proteins (40 downregulated and 2 upregulated) in the diseased group showed reverse expression when treated with selenate. These DEPs are analyzed with different bioinformatics tools and are found associated with various AD pathologies and pathways. Based on their functions, selenate-reversed proteins are classified as structural proteins, metabolic proteins, calcium regulating proteins, synaptic proteins, signaling proteins, stress related proteins, and transport proteins. Six altered AD associated proteins are successfully validated by Western blot analysis. This study shows that sodium selenate has a profound effect on the hippocampus of the triple transgenic AD mice. This might be established as an effective therapeutic agent after further investigation.
Collapse
Affiliation(s)
- Javed Iqbal
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Kaoyuan Zhang
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Na Jin
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Yuxi Zhao
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Qiong Liu
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Jiazuan Ni
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| | - Liming Shen
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P. R. China
| |
Collapse
|
161
|
|
162
|
The temporal sequence of improved mitochondrial function on the dynamics of respiration, mobility, and cognition in aged Drosophila. Neurobiol Aging 2018; 70:140-147. [PMID: 30007163 DOI: 10.1016/j.neurobiolaging.2018.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 05/31/2018] [Accepted: 06/07/2018] [Indexed: 02/06/2023]
Abstract
Aging is associated with mitochondrial decline and reduced adenosine triphosphate (ATP) production leading to cellular dysfunction, but this is improved by long-wavelength light absorbed by cytochrome c oxidase, increasing cytochrome c oxidase activity, ATP production and improving metabolism, sensory motor function, and cognition. Yet, the sequence of these events is unknown. We give old flies a single 90-minute 670-nm pulse and measure temporal sequences of changes in respiration, ATP, motor, and cognitive ability. Respiration increased significantly 20 minutes after light initiation and remained elevated for 4 days. Measurable ATP increased at 1 hour, peaking at 3 hours, and then declined rapidly. Respiration improved before ATP increased, which indicates an early ATP sink. Flies explore environments stereotypically, which is lost with aging but is reestablished for 7 hours after light exposure. However, again, there are improvements before there are peaks in ATP production. Improved mobility and cognitive function persist after ATP levels return to normal. Hence, elevated ATP in age may initiate independent signaling mechanisms that result in improvements in aged metabolism and function.
Collapse
|
163
|
Antimicrobial actions of dual oxidases and lactoperoxidase. J Microbiol 2018; 56:373-386. [PMID: 29858825 DOI: 10.1007/s12275-018-7545-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/16/2018] [Accepted: 02/19/2018] [Indexed: 12/11/2022]
Abstract
The NOX/DUOX family of NADPH oxidases are transmembrane proteins generating reactive oxygen species as their primary enzymatic products. NADPH oxidase (NOX) 1-5 and Dual oxidase (DUOX) 1 and 2 are members of this family. These enzymes have several biological functions including immune defense, hormone biosynthesis, fertilization, cell proliferation and differentiation, extracellular matrix formation and vascular regulation. They are found in a variety of tissues such as the airways, salivary glands, colon, thyroid gland and lymphoid organs. The discovery of NADPH oxidases has drastically transformed our view of the biology of reactive oxygen species and oxidative stress. Roles of several isoforms including DUOX1 and DUOX2 in host innate immune defense have been implicated and are still being uncovered. DUOX enzymes highly expressed in the respiratory and salivary gland epithelium have been proposed as the major sources of hydrogen peroxide supporting mucosal oxidative antimicrobial defenses. In this review, we shortly present data on DUOX discovery, structure and function, and provide a detailed, up-to-date summary of discoveries regarding antibacterial, antiviral, antifungal, and antiparasitic functions of DUOX enzymes. We also present all the literature describing the immune functions of lactoperoxidase, an enzyme working in partnership with DUOX to produce antimicrobial substances.
Collapse
|
164
|
Cammerer MA, Gonçalves SC, de Araujo GN, Andrades ME, Lopes A, Wainstein MV. The Effects of a Flavonoid-Rich Diet on Oxidative Stress, Inflammation, and Lipid Profile after Elective Percutaneous Coronary Intervention: A Randomized Clinical Trial. Prev Nutr Food Sci 2018; 23:108-114. [PMID: 30018888 PMCID: PMC6047878 DOI: 10.3746/pnf.2018.23.2.108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 04/23/2018] [Indexed: 12/31/2022] Open
Abstract
Antioxidant-rich foods may decrease oxidative stress and have a direct impact on atherosclerosis by reducing low-density lipoprotein (LDL) oxidation. Our aim was to assess the impact of a flavonoid-rich diet on oxidative stress, inflammatory response, and lipid profile in patients with coronary artery disease submitted to elective percutaneous coronary intervention (PCI). Thirty-three patients submitted to elective PCI were randomly allocated to follow either a flavonoid rich antioxidant (AOX) diet or a control diet based on National Cholesterol Education Program Adult Treatment Panel III recommendations. Patients were followed for 6 months. Dietary intake was recorded at the start and at the end of the follow-up period, as were oxidative stress markers (ferric reducing ability of plasma and protein sulphydryl) and C-reactive protein (CRP). Patients randomized to follow the AOX diet had a reduction in energy, carbohydrate, and lipid intake, as well as increased flavonoid intake. Compared to the control group, there were no changes in oxidative stress markers or CRP in the patients following the AOX diet, but these patients had a significant decrease in LDL cholesterol levels. In conclusion, the findings of this study suggest that a flavonoid-based antioxidant-rich diet is not associated with reductions in oxidative stress or inflammatory markers 6 months after percutaneous coronary intervention. Nonetheless, patients in the intervention group experienced significant reductions in LDL cholesterol, which may indicate cardiovascular benefits of AOX diets despite of inflammation and oxidative stress markers.
Collapse
Affiliation(s)
- Magda Ambros Cammerer
- Post-Graduation Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90040-060,
Brazil
| | - Sandro Cadaval Gonçalves
- Post-Graduation Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90040-060,
Brazil
- Cardiology Department, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
| | - Gustavo Neves de Araujo
- Post-Graduation Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90040-060,
Brazil
- Cardiology Department, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
| | - Michael Everton Andrades
- Cardiology Department, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
- Experimental Research Center, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
| | - Amanda Lopes
- Experimental Research Center, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
| | - Marco Vugman Wainstein
- Post-Graduation Program in Cardiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 90040-060,
Brazil
- Cardiology Department, Hospital de Clinicas de Porto Alegre, Porto Alegre, RS 90035-903,
Brazil
| |
Collapse
|
165
|
Bui TT, Nguyen TH. Natural product for the treatment of Alzheimer's disease. J Basic Clin Physiol Pharmacol 2018; 28:413-423. [PMID: 28708573 DOI: 10.1515/jbcpp-2016-0147] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 05/28/2017] [Indexed: 11/15/2022]
Abstract
Alzheimer's disease (AD) is related to increasing age. It is mainly characterized by progressive neurodegenerative disease, which damages memory and cognitive function. Natural products offer many options to reduce the progress and symptoms of many kinds of diseases, including AD. Meanwhile, natural compound structures, including lignans, flavonoids, tannins, polyphenols, triterpenes, sterols, and alkaloids, have anti-inflammatory, antioxidant, anti-amyloidogenic, and anticholinesterase activities. In this review, we summarize the pathogenesis and targets for treatment of AD. We also present several medicinal plants and isolated compounds that are used for preventing and reducing symptoms of AD.
Collapse
|
166
|
Neuroprotective effects of Tualang honey against oxidative stress and memory decline in young and aged rats exposed to noise stress. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1080/16583655.2018.1465275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
167
|
Calorie restriction is the most reasonable anti-ageing intervention: a meta-analysis of survival curves. Sci Rep 2018; 8:5779. [PMID: 29636552 PMCID: PMC5893623 DOI: 10.1038/s41598-018-24146-z] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/22/2018] [Indexed: 01/08/2023] Open
Abstract
Despite technological advances, the survival records from longevity experiments remain the most indispensable tool in ageing-related research. A variety of interventions, including medications, genetic manipulations and calorie restriction (CR), have been demonstrated to extend the lifespan of several species. Surprisingly, few systematic studies have investigated the differences among these anti-ageing strategies using survival data. Here, we conduct a comprehensive and comparative meta-analysis of numerous published studies on Caenorhabditis elegans and Drosophila. We found that CR and genetic manipulations are generally more effective than medications at extending the total lifespan in both models, and CR can improve the ageing pattern of C. elegans. We further analysed the survival variation for different anti-ageing medications and determined that hypoglycaemic agents and antioxidants are advantageous despite only moderately increasing the overall lifespan; therefore, these two types of medications are promising CR mimetics. Analysis of genetic manipulations also indicated that the genes or pathways that extend lifespan in a healthier pattern are associated with CR. These results suggest that CR or CR mimetics may be the most reasonable and potentially beneficial anti-ageing strategy.
Collapse
|
168
|
Centner C, Zdzieblik D, Dressler P, Fink B, Gollhofer A, König D. Acute effects of blood flow restriction on exercise-induced free radical production in young and healthy subjects. Free Radic Res 2018; 52:446-454. [DOI: 10.1080/10715762.2018.1440293] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Christoph Centner
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Denise Zdzieblik
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Patrick Dressler
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Bruno Fink
- Noxygen Science Transfer & Diagnostics GmbH, Elzach, Germany
| | - Albert Gollhofer
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Daniel König
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| |
Collapse
|
169
|
Extracellular matrix regulation of fibroblast function: redefining our perspective on skin aging. J Cell Commun Signal 2018; 12:35-43. [PMID: 29455303 DOI: 10.1007/s12079-018-0459-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 01/31/2018] [Indexed: 01/22/2023] Open
Abstract
The dermal extracellular matrix (ECM) comprises the bulk of skin and confers strength and resiliency. In young skin, fibroblasts produce and adhere to the dermal ECM, which is composed primarily of type I collagen fibrils. Adherence allows fibroblasts to spread and exert mechanical force on the surrounding ECM. In this state, fibroblasts display a "youthful" phenotype characterized by maintenance of the composition and structural organization of the dermal ECM. During aging, fibroblast-ECM interactions become disrupted due to fragmentation of collagen fibrils. This disruption causes loss of fibroblast spreading and mechanical force, which inextricably lead to an "aged" phenotype; fibroblasts synthesize less ECM proteins and more matrix-degrading metalloproteinases. This imbalance of ECM homeostasis further drives collagen fibril fragmentation in a self-perpetuating cycle. This article summarizes age-related changes in the dermal ECM and the mechanisms by which these changes alter the interplay between fibroblasts and their extracellular matrix microenvironment that drive the aging process in human skin.
Collapse
|
170
|
Mladenov E, Li F, Zhang L, Klammer H, Iliakis G. Intercellular communication of DNA damage and oxidative status underpin bystander effects. Int J Radiat Biol 2018; 94:719-726. [PMID: 29377786 DOI: 10.1080/09553002.2018.1434323] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PURPOSE A well-known phenomenon in the field of radiation biology is that cells exposed to ionizing radiation (IR) (targeted cells) can induce in non-irradiated (non-targeted), bystander cells effects reminiscent of DNA damage responses (DDR) normally expected, exclusively in targeted cells. These phenomena are collectively referred to as radiation-induced bystander effects (RIBE) and have different manifestations depending on the endpoint studied. Although it is now recognized that RIBE reflects to a considerable extent communication by the targeted cells to undamaged cells of their damaged status, the molecular underpinnings of this communication and its significance for the organism are only partly understood. In particular, it remains unknown why and how targeted cells induce DNA damage in non-targeted, bystander cells threatening their genomic stability and risking thus their transformation to cancer cells. Here, we outline observations hinting to possible sources of artifacts in experiments designed to detect RIBE and summarize a model according to which targeted cells modulate their redox status as part of their overall response to IR and use this modified redox status as a source to generate signals that are transmitted to non-irradiated cells of the organism. MATERIAL AND METHODS A synthesis of published evidence is presented. RESULTS Depending on type, RIBE signals may be transmitted through various forms of direct intercellular contact, through molecules acting locally in a paracrine fashion, or through molecules acting remotely in an endocrine fashion. We reason that DNA damage generated in bystander cells is unlikely to manifest the clustered character exhibited in directly exposed cells and postulate that RIBE will depend on complications generated when simpler forms of damage encounter the DNA replication fork. CONCLUSIONS We suggest that RIBE result from intercellular communication mechanisms designed to spread within tissues, or the organism, alarm signals of DNA damage inflicted in subsets of the constituent cells. This response likely evolved to protect organisms by appropriately modulating stress response, repair or apoptosis, and may in some instances also cause adverse effects, e.g. as collateral damage.
Collapse
Affiliation(s)
- Emil Mladenov
- a Institute of Medical Radiation Biology , University of Duisburg-Essen Medical School , Essen , Germany
| | - Fanghua Li
- a Institute of Medical Radiation Biology , University of Duisburg-Essen Medical School , Essen , Germany
| | - Lihua Zhang
- a Institute of Medical Radiation Biology , University of Duisburg-Essen Medical School , Essen , Germany
| | - Holger Klammer
- a Institute of Medical Radiation Biology , University of Duisburg-Essen Medical School , Essen , Germany
| | - George Iliakis
- a Institute of Medical Radiation Biology , University of Duisburg-Essen Medical School , Essen , Germany
| |
Collapse
|
171
|
Wang J, Feng Y, Han P, Wang F, Luo X, Liang J, Sun X, Ye J, Lu Y, Sun X. Photosensitization of A2E triggers telomere dysfunction and accelerates retinal pigment epithelium senescence. Cell Death Dis 2018; 9:178. [PMID: 29415988 PMCID: PMC5833825 DOI: 10.1038/s41419-017-0200-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/06/2017] [Accepted: 11/28/2017] [Indexed: 12/12/2022]
Abstract
Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss in elderly people. AMD is classified as early, intermediate, advanced non-neovascular, and advanced neovascular forms depending on the clinical features. However, the exact pathogenesis remains unclear. Retinal pigment epithelium (RPE) cells degeneration is a hallmark of AMD. With aging, lipofuscin accumulates in RPE cells. N-retinylidene-N-retinylethanolamine (named A2E), a well-known fluorophore of lipofuscin, may contribute to RPE cells degeneration. In this study, we showed that photosensitization of A2E increased DNA damage, including telomere deprotection and deletion, and triggered cellular senescence. In addition, we found that the antioxidant N-acetyl-cysteine (NAC) partially alleviated this DNA damage. Telomerase overexpression rescued A2E-mediated RPE cell senescence, indicating that telomere dysfunction plays an important role in A2E-based senescence. We further showed that the senescence induced by A2E photosensitization may affect the microenvironment of the retina by expressing several factors of the secretory phenotype (SASP) including IL1B, IL13RA2, and CXCR4 through the NF-κB pathway. We propose that expression of these factors create a pro-inflammatory environment that drives retina degeneration. Moreover, our findings suggest that protecting telomeres is a valuable strategy for treating retinal degeneration diseases, such as AMD.
Collapse
Affiliation(s)
- Jing Wang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China.,International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Yiji Feng
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China
| | - Peng Han
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Fenghua Wang
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China.,Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China
| | - Xueting Luo
- Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Jian Liang
- Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China.,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China
| | - Xiangjun Sun
- School of Biology and Agriculture, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Ye
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China
| | - Yiming Lu
- International Laboratory in Hematology and Cancer (LIA), Shanghai Jiao Tong University School of Medicine/Ruijin Hospital/CNRS/INSERM/Nice University, Pôle Sino-Français de Recherche en Sciences du Vivant et Génomique, Shanghai Ruijin Hospital, Affiliated to Shanghai Jiaotong University, 200025, Shanghai, PR China.
| | - Xiaodong Sun
- Department of Ophthalmology, Shanghai General Hospital (Shanghai First People's Hospital), Shanghai Jiao Tong University School of Medicine, No. 100 HaiNing Road, 200080, Shanghai, PR China. .,Shanghai Engineering Center For Visual Science And Photomedicine, Shanghai, China. .,Shanghai Key Laboratory of Ocular Fundus Diseases, Shanghai, China.
| |
Collapse
|
172
|
Das M, Pandima Devi K. Neuroprotective and Antiaging Essential Oils and Lipids in Plants. REFERENCE SERIES IN PHYTOCHEMISTRY 2018. [DOI: 10.1007/978-3-319-54528-8_89-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
|
173
|
Which is the Most Reasonable Anti-aging Strategy: Meta-analysis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1086:267-282. [DOI: 10.1007/978-981-13-1117-8_17] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
174
|
Lim CS, Cho MK, Park MY, Kim HM. A Two-Photon Ratiometric Fluorescent Probe for Imaging of Hydrogen Peroxide Levels in Rat Organ Tissues. ChemistryOpen 2018; 7:53-56. [PMID: 29318096 PMCID: PMC5754560 DOI: 10.1002/open.201700155] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Indexed: 01/20/2023] Open
Abstract
Hydrogen peroxide (H2O2) is important in the regulation of a variety of biological processes and is involved in various diseases. Quantitative measurement of H2O2 levels at the subcellular level is important for understanding its positive and negative effects on biological processes. Herein, a two-photon ratiometric fluorescent probe (SHP-Cyto) with a boronate-based carbamate leaving group as the H2O2 reactive trigger and 6-(benzo[d]thiazol-2'-yl)-2-(N,N-dimethylamino) naphthalene (BTDAN) as the fluorophore was synthesized and examined for its ability to detect cytosolic H2O2 in situ. This probe, based on the specific reaction between boronate and H2O2, displayed a fluorescent color change (455 to 528 nm) in response to H2O2 in the presence of diverse reactive oxygen species in a physiological medium. In addition, ratiometric two-photon microscopy (TPM) images with SHP-Cyto revealed that H2O2 levels gradually increased from brain to kidney, skin, heart, lung, and then liver tissues. SHP-Cyto was successfully applied to the imaging of endogenously produced cytosolic H2O2 levels in live cells and various rat organs by using TPM.
Collapse
Affiliation(s)
- Chang Su Lim
- Department of Energy System Research and Department of ChemistryAjou UniversitySuwonGyeonggi-do443–749Republic of Korea
| | - Myoung Ki Cho
- Department of Energy System Research and Department of ChemistryAjou UniversitySuwonGyeonggi-do443–749Republic of Korea
| | - Mi Yeon Park
- Department of Energy System Research and Department of ChemistryAjou UniversitySuwonGyeonggi-do443–749Republic of Korea
| | - Hwan Myung Kim
- Department of Energy System Research and Department of ChemistryAjou UniversitySuwonGyeonggi-do443–749Republic of Korea
| |
Collapse
|
175
|
Development of luminol-N-hydroxyphthalimide chemiluminescence system for highly selective and sensitive detection of superoxide dismutase, uric acid and Co2+. Biosens Bioelectron 2018; 99:519-524. [DOI: 10.1016/j.bios.2017.08.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 08/08/2017] [Accepted: 08/11/2017] [Indexed: 02/07/2023]
|
176
|
Yu Q, Zhong C. Membrane Aging as the Real Culprit of Alzheimer's Disease: Modification of a Hypothesis. Neurosci Bull 2017; 34:369-381. [PMID: 29177767 DOI: 10.1007/s12264-017-0192-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/05/2017] [Indexed: 01/10/2023] Open
Abstract
Our previous studies proposed that Alzheimer's disease (AD) is a metabolic disorder and hypothesized that abnormal brain glucose metabolism inducing multiple pathophysiological cascades contributes to AD pathogenesis. Aging is one of the great significant risk factors for AD. Membrane aging is first prone to affect the function and structure of the brain by impairing glucose metabolism. We presume that risk factors of AD, including genetic factors (e.g., the apolipoprotein E ε4 allele and genetic mutations) and non-genetic factors (such as fat, diabetes, and cardiac failure) accelerate biomembrane aging and lead to the onset and development of the disease. In this review, we further modify our previous hypothesis to demonstrate "membrane aging" as an initial pathogenic factor that results in functional and structural alterations of membranes and, consequently, glucose hypometabolism and multiple pathophysiological cascades.
Collapse
Affiliation(s)
- Qiujian Yu
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Chunjiu Zhong
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| |
Collapse
|
177
|
Grimm A, Eckert A. Brain aging and neurodegeneration: from a mitochondrial point of view. J Neurochem 2017; 143:418-431. [PMID: 28397282 PMCID: PMC5724505 DOI: 10.1111/jnc.14037] [Citation(s) in RCA: 348] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 03/27/2017] [Accepted: 04/06/2017] [Indexed: 12/16/2022]
Abstract
Aging is defined as a progressive time-related accumulation of changes responsible for or at least involved in the increased susceptibility to disease and death. The brain seems to be particularly sensitive to the aging process since the appearance of neurodegenerative diseases, including Alzheimer's disease, is exponential with the increasing age. Mitochondria were placed at the center of the 'free-radical theory of aging', because these paramount organelles are not only the main producers of energy in the cells, but also to main source of reactive oxygen species. Thus, in this review, we aim to look at brain aging processes from a mitochondrial point of view by asking: (i) What happens to brain mitochondrial bioenergetics and dynamics during aging? (ii) Why is the brain so sensitive to the age-related mitochondrial impairments? (iii) Is there a sex difference in the age-induced mitochondrial dysfunction? Understanding mitochondrial physiology in the context of brain aging may help identify therapeutic targets against neurodegeneration. This article is part of a series "Beyond Amyloid".
Collapse
Affiliation(s)
- Amandine Grimm
- University of BaselTransfaculty Research PlatformMolecular & Cognitive NeuroscienceNeurobiology Laboratory for Brain Aging and Mental HealthBaselSwitzerland
- University of BaselPsychiatric University ClinicsBaselSwitzerland
| | - Anne Eckert
- University of BaselTransfaculty Research PlatformMolecular & Cognitive NeuroscienceNeurobiology Laboratory for Brain Aging and Mental HealthBaselSwitzerland
- University of BaselPsychiatric University ClinicsBaselSwitzerland
| |
Collapse
|
178
|
Chapagain D, Range F, Huber L, Virányi Z. Cognitive Aging in Dogs. Gerontology 2017; 64:165-171. [PMID: 29065419 PMCID: PMC5841136 DOI: 10.1159/000481621] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/19/2017] [Indexed: 01/12/2023] Open
Abstract
A decline in the physical or mental health of older dogs can be a challenge for the owners, whose relationship with their dog is compromised by the cognitive and behavioral changes in their dogs. Although dog owners tend to consider many physiological and behavioral changes in old dogs as part of the normal aging process, it is important to differentiate between normal aging and pathologic aging, since behavioral changes may be the first indication of declining health and welfare in old dogs. Most reviews on cognitive aging in dogs have focused on translational approaches to human Alzheimer's disease; from a practical perspective, however, understanding normal cognitive aging in pet dogs and screening cognitively affected dogs are important in their own right. Here we review the literature on different cognitive functions that decline during aging, signs of cognitive dysfunction, screening methods, and preventive measures for age-related cognitive decline. Moreover, we discuss the drawbacks of using questionnaires as subjective measures of aging and propose the development of objective methods to distinguish normal cognitive aging from severe cognitive dysfunction. We suggest that multi-targeted approaches that combine owner-evaluated questionnaires with neuropsychological tests can be most effective in screening cognitively affected dogs from normally aging dogs. Regarding preventive measures, we conclude that combinations of dietary intervention and behavioral enrichment may be more beneficial than single-pathway manipulations in delaying cognitive aging or retaining various cognitive functions during aging.
Collapse
Affiliation(s)
- Durga Chapagain
- Clever Dog Lab, Comparative Cognition, Messerli Research Institute, University of Veterinary Medicine, Vienna, Medical University of Vienna, University of Vienna, Vienna, Austria
| | | | | | | |
Collapse
|
179
|
Meijles DN, Sahoo S, Al Ghouleh I, Amaral JH, Bienes-Martinez R, Knupp HE, Attaran S, Sembrat JC, Nouraie SM, Rojas MM, Novelli EM, Gladwin MT, Isenberg JS, Cifuentes-Pagano E, Pagano PJ. The matricellular protein TSP1 promotes human and mouse endothelial cell senescence through CD47 and Nox1. Sci Signal 2017; 10:eaaj1784. [PMID: 29042481 PMCID: PMC5679204 DOI: 10.1126/scisignal.aaj1784] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Senescent cells withdraw from the cell cycle and do not proliferate. The prevalence of senescent compared to normally functioning parenchymal cells increases with age, impairing tissue and organ homeostasis. A contentious principle governing this process has been the redox theory of aging. We linked matricellular protein thrombospondin 1 (TSP1) and its receptor CD47 to the activation of NADPH oxidase 1 (Nox1), but not of the other closely related Nox isoforms, and associated oxidative stress, and to senescence in human cells and aged tissue. In human endothelial cells, TSP1 promoted senescence and attenuated cell cycle progression and proliferation. At the molecular level, TSP1 increased Nox1-dependent generation of reactive oxygen species (ROS), leading to the increased abundance of the transcription factor p53. p53 mediated a DNA damage response that led to senescence through Rb and p21cip, both of which inhibit cell cycle progression. Nox1 inhibition blocked the ability of TSP1 to increase p53 nuclear localization and p21cip abundance and its ability to promote senescence. Mice lacking TSP1 showed decreases in ROS production, p21cip expression, p53 activity, and aging-induced senescence. Conversely, lung tissue from aging humans displayed increases in the abundance of vascular TSP1, Nox1, p53, and p21cip Finally, genetic ablation or pharmacological blockade of Nox1 in human endothelial cells attenuated TSP1-mediated ROS generation, restored cell cycle progression, and protected against senescence. Together, our results provide insights into the functional interplay between TSP1 and Nox1 in the regulation of endothelial senescence and suggest potential targets for controlling the aging process at the molecular level.
Collapse
Affiliation(s)
- Daniel N Meijles
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Sanghamitra Sahoo
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Imad Al Ghouleh
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Division of Cardiology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Jefferson H Amaral
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Raquel Bienes-Martinez
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Heather E Knupp
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Shireen Attaran
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - John C Sembrat
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Seyed M Nouraie
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Mauricio M Rojas
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Enrico M Novelli
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Mark T Gladwin
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Jeffrey S Isenberg
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Eugenia Cifuentes-Pagano
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Patrick J Pagano
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15261, USA.
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| |
Collapse
|
180
|
Cardiac Aging – Benefits of Exercise, Nrf2 Activation and Antioxidant Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 999:231-255. [DOI: 10.1007/978-981-10-4307-9_13] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
181
|
Kim CS, Park S, Kim J. The role of glycation in the pathogenesis of aging and its prevention through herbal products and physical exercise. J Exerc Nutrition Biochem 2017; 21:55-61. [PMID: 29036767 PMCID: PMC5643203 DOI: 10.20463/jenb.2017.0027] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 08/09/2017] [Indexed: 01/12/2023] Open
Abstract
[Purpose] Advanced glycation end products (AGEs) are non-enzymatic modifications of proteins or lipids after exposure to sugars. In this review, the glycation process and AGEs are introduced, and the harmful effects of AGEs in the aging process are discussed. [Methods] Results from human and animal studies examining the mechanisms and effects of AGEs are considered. In addition, publications addressing means to attenuate glycation stress through AGE inhibitors or physical exercise are reviewed. [Results] AGEs form in hyperglycemic conditions and/or the natural process of aging. Numerous publications have demonstrated acceleration of the aging process by AGEs. Exogenous AGEs in dietary foods also trigger organ dysfunction and tissue aging. Various herbal supplements or regular physical exercise have beneficial effects on glycemic control and oxidative stress with a consequent reduction of AGE accumulation during aging. [Conclusion] The inhibition of AGE formation and accumulation in tissues can lead to an increase in lifespan.
Collapse
Affiliation(s)
- Chan-Sik Kim
- Korean Medicine Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Sok Park
- Department of Sports Leadership, Kwangwoon University, Seoul, Republic of Korea
| | - Junghyun Kim
- Department of Oral Pathology, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea
| |
Collapse
|
182
|
Lopes PA, Bandarra NM, Martins SV, Martinho J, Alfaia CM, Madeira MS, Cardoso C, Afonso C, Paulo MC, Pinto RMA, Guil-Guerrero JL, Prates JAM. Markers of neuroprotection of combined EPA and DHA provided by fish oil are higher than those of EPA ( Nannochloropsis) and DHA ( Schizochytrium) from microalgae oils in Wistar rats. Nutr Metab (Lond) 2017; 14:62. [PMID: 29026429 PMCID: PMC5622583 DOI: 10.1186/s12986-017-0218-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 09/22/2017] [Indexed: 01/08/2023] Open
Abstract
Background To overcome the current overexploitation of fish rich in n-3 long chain polyunsaturated fatty acids (LCPUFA), microalgae have become a promising marine lipid source. The purpose of this study was to assess eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3), isolated or combined from distinct marine origins, on the promotion of neuroprotective effects. Methods The experiment lasted for 10 weeks and involved 32 Wistar rats, divided into 4 diets (n = 8): a diet rich in milk fat was taken as control (Milk Fat) and compared to n-3 LCPUFA enriched diets, either in EPA + DHA form through fish oil (Fish Oil), or EPA through Nannochloropsis oil (Nanno), or DHA through Schizochytrium oil (Schyzo), while maintaining Milk Fat incorporation. Results Plasma lipid profile and dopamine levels were more beneficial in Fish Oil diet. In addition, n-3 LCPUFA incorporation was found increased in liver and erythrocytes from Fish Oil fed rats, suggesting that fish oil is a better dietary source for fatty acids deposition in the organism than microalgae. The Forced Swimming Test revealed a positive behavioural action of EPA + DHA, in opposition to Milk Fat and Nanno diets, which had higher immobile times. mRNA levels of serotonin receptors, HT1A and HT2A along with CREB, the transmission factor for learning and memory, were higher in the hippocampus of rats fed n-3 LCPUFA diets comparative to Milk Fat. Conclusion Taken together, the combination of EPA and DHA from fish oil can counteract the undesirable health effects of saturated fat based diets and benefit, in the long run, neurological function.
Collapse
Affiliation(s)
- Paula A Lopes
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Narcisa M Bandarra
- DIVAV, Instituto Português do Mar e da Atmosfera (IPMA), Av. Brasília, 1449-006 Lisbon, Portugal.,CIIMAR, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - Susana V Martins
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Joana Martinho
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Cristina M Alfaia
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Marta S Madeira
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| | - Carlos Cardoso
- DIVAV, Instituto Português do Mar e da Atmosfera (IPMA), Av. Brasília, 1449-006 Lisbon, Portugal.,CIIMAR, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - Cláudia Afonso
- DIVAV, Instituto Português do Mar e da Atmosfera (IPMA), Av. Brasília, 1449-006 Lisbon, Portugal.,CIIMAR, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - Maria C Paulo
- Depsiextracta - Tecnologias Biológicas, Lda., Quinta do Monte Novo-Taipadas, 2985-064 Canha, Portugal
| | - Rui M A Pinto
- iMed.UL, Faculdade de Farmácia, Universidade de Lisboa, Avenida Professor Gama Pinto, 1649-003 Lisbon, Portugal.,Joaquim Chaves Saúde. Dr. Joaquim Chaves, Laboratório de Análises Clínicas, 1495-148 Miraflores, Algés, Portugal
| | - José L Guil-Guerrero
- Departamento de Tecnología de Alimentos, Universidad de Almería, 04120 Almería, Spain
| | - José A M Prates
- CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisbon, Portugal
| |
Collapse
|
183
|
Nadal-Nicolás FM, Vidal-Sanz M, Agudo-Barriuso M. The aging rat retina: from function to anatomy. Neurobiol Aging 2017; 61:146-168. [PMID: 29080498 DOI: 10.1016/j.neurobiolaging.2017.09.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 01/13/2023]
Abstract
In healthy beings, age is the ultimate reason of cellular malfunction and death. In the rat retina, age causes a functional decline and loss of specific neuronal populations. In this regard, controversial conclusions have been reported for the innermost retina. Here, we have studied the albino and pigmented retina for the duration of the rat life-span. Independent of age (21 days-22 months), the electroretinographic recordings and the volume of the retina and its layers are smaller in albinos. Functionally, aging causes in both strains a loss of cone- and rod-mediated responses. Anatomically, cell density decreases with age because the retina grows linearly with time; no cell loss is observed in the ganglion cell layer; and only in the pigmented rat, there is a decrease in cone photoreceptors. In old animals of both strains, there is gliosis in the superior colliculi and a diminution of the area innervated by retinal ganglion cells. In conclusion, this work provides the basis for further studies linking senescence to neurodegenerative retinal diseases.
Collapse
Affiliation(s)
- Francisco M Nadal-Nicolás
- Instituto Murciano de Investigación Biosanitaria-Virgen de la Arrixaca (IMIB-Arrixaca) and Departamento de Oftalmología Facultad de Medicina, Universidad de Murcia, Murcia, Spain.
| | - Manuel Vidal-Sanz
- Instituto Murciano de Investigación Biosanitaria-Virgen de la Arrixaca (IMIB-Arrixaca) and Departamento de Oftalmología Facultad de Medicina, Universidad de Murcia, Murcia, Spain
| | - Marta Agudo-Barriuso
- Instituto Murciano de Investigación Biosanitaria-Virgen de la Arrixaca (IMIB-Arrixaca) and Departamento de Oftalmología Facultad de Medicina, Universidad de Murcia, Murcia, Spain.
| |
Collapse
|
184
|
Takagi R, Takeda A, Takahashi D, Toshima K. Target-Selective Fluorescence Imaging and Photocytotoxicity against H2O2High-Expressing Cancer Cells Using a Photoactivatable Theranostic Agent. Chem Asian J 2017; 12:2656-2659. [DOI: 10.1002/asia.201701004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Ryoma Takagi
- Department of Applied Chemistry, Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Ayano Takeda
- Department of Applied Chemistry, Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Daisuke Takahashi
- Department of Applied Chemistry, Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kazunobu Toshima
- Department of Applied Chemistry, Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| |
Collapse
|
185
|
Weinrich TW, Coyne A, Salt TE, Hogg C, Jeffery G. Improving mitochondrial function significantly reduces metabolic, visual, motor and cognitive decline in aged Drosophila melanogaster. Neurobiol Aging 2017; 60:34-43. [PMID: 28917665 DOI: 10.1016/j.neurobiolaging.2017.08.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/09/2017] [Accepted: 08/18/2017] [Indexed: 01/01/2023]
Abstract
Mitochondria play a major role in aging. Over time, mutations accumulate in mitochondrial DNA leading to reduced adenosine triphosphate (ATP) production and increased production of damaging reactive oxygen species. If cells fail to cope, they die. Reduced ATP will result in declining cellular membrane potentials leading to reduced central nervous system function. However, aged mitochondrial function is improved by long wavelength light (670 nm) absorbed by cytochrome c oxidase in mitochondrial respiration. In Drosophila, lifelong 670-nm exposure extends lifespan and improves aged mobility. Here, we ask if improved mitochondrial metabolism can reduce functional senescence in metabolism, sensory, locomotor, and cognitive abilities in old flies exposed to 670 nm daily for 1 week. Exposure significantly increased cytochrome c oxidase activity, whole body energy storage, ATP and mitochondrial DNA content, and reduced reactive oxygen species. Retinal function and memory were also significantly improved to levels found in 2-week-old flies. Mobility improved by 60%. The mode of action is likely related to improved energy homeostasis increasing ATP availability for ionic ATPases critical for maintenance of neuronal membrane potentials. 670-nm light exposure may be a simple route for resolving problems of aging.
Collapse
Affiliation(s)
| | - Ariathney Coyne
- University College London, Institute of Ophthalmology, London, UK
| | - Thomas E Salt
- University College London, Institute of Ophthalmology, London, UK; Neurexpert Ltd., London, UK
| | - Christopher Hogg
- University College London, Institute of Ophthalmology, London, UK
| | - Glen Jeffery
- University College London, Institute of Ophthalmology, London, UK.
| |
Collapse
|
186
|
Roy J, Galano JM, Durand T, Le Guennec JY, Lee JCY. Physiological role of reactive oxygen species as promoters of natural defenses. FASEB J 2017; 31:3729-3745. [PMID: 28592639 DOI: 10.1096/fj.201700170r] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/22/2017] [Indexed: 02/06/2023]
Abstract
It has been 60 yr since the discovery of reactive oxygen species (ROS) in biology and the beginning of the scientific community's attempt to understand the impact of the unpaired electron of ROS molecules in biological pathways, which was eventually noted to be toxic. Several studies have shown that the presence of ROS is essential in triggering or acting as a secondary factor for numerous pathologies, including metabolic and genetic diseases; however, it was demonstrated that chronic treatment with antioxidants failed to show efficacy and positive effects in the prevention of diseases or health complications that result from oxidative stress. On the contrary, such treatment has been shown to sometimes even worsen the disease. Because of the permanent presence of ROS in organisms, elaborate mechanisms to adapt with these reactive molecules and to use them without necessarily blocking or preventing their actions have been studied. There is now a large body of evidence that shows that living organisms have conformed to the presence of ROS and, in retrospect, have adapted to the bioactive molecules that are generated by ROS on proteins, lipids, and DNA. In addition, ROS have undergone a shift from being molecules that invoked oxidative damage in regulating signaling pathways that impinged on normal physiological and redox responses. Working in this direction, this review unlocks a new conception about the involvement of cellular oxidants in the maintenance of redox homeostasis in redox regulation of normal physiological functions, and an explanation for its essential role in numerous pathophysiological states is noted.-Roy, J., Galano, J.-M., Durand, T., Le Guennec, J.-Y., Lee, J. C.-Y. Physiological role of reactive oxygen species as promoters of natural defenses.
Collapse
Affiliation(s)
- Jérôme Roy
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal and Montreal Diabetes Research Center, Department of Nutrition, Université de Montréal, Montreal, Québec, Canada; .,Centre National de la Recherche Scientifique Unité Mixte de Recherche 9214, Inserm Unité 1046 Physiologie et Médecine Expérimentale du Cœur et des Muscles, Université de Montpellier, Montpellier, France
| | - Jean-Marie Galano
- Institut des Biomolécules Max Mousseron, Centre National de la Recherche Scientifique Unité Mixte de Recherche 5247, École Nationale Supérieure de Chimie de Montpellier, Université de Montpellier, Montpellier, France
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron, Centre National de la Recherche Scientifique Unité Mixte de Recherche 5247, École Nationale Supérieure de Chimie de Montpellier, Université de Montpellier, Montpellier, France
| | - Jean-Yves Le Guennec
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 9214, Inserm Unité 1046 Physiologie et Médecine Expérimentale du Cœur et des Muscles, Université de Montpellier, Montpellier, France
| | | |
Collapse
|
187
|
Promislow DEL. SENESCENCE IN NATURAL POPULATIONS OF MAMMALS: A COMPARATIVE STUDY. Evolution 2017; 45:1869-1887. [DOI: 10.1111/j.1558-5646.1991.tb02693.x] [Citation(s) in RCA: 181] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/1990] [Accepted: 04/18/1991] [Indexed: 11/28/2022]
|
188
|
Blackstone NW. PERSPECTIVE A UNITS‐OF‐EVOLUTION PERSPECTIVE ON THE ENDOSYMBIONT THEORY OF THE ORIGIN OF THE MITOCHONDRION. Evolution 2017; 49:785-796. [DOI: 10.1111/j.1558-5646.1995.tb02315.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/1994] [Accepted: 10/20/1994] [Indexed: 11/26/2022]
Affiliation(s)
- Neil W. Blackstone
- Department of Biological Sciences Northern Illinois University DeKalb Illinois 60115
| |
Collapse
|
189
|
Tung BT, Thu DK, Thu NTK, Hai NT. Antioxidant and acetylcholinesterase inhibitory activities of ginger root (Zingiber officinale Roscoe) extract. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2017; 14:/j/jcim.2017.14.issue-4/jcim-2016-0116/jcim-2016-0116.xml. [PMID: 29345437 DOI: 10.1515/jcim-2016-0116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 03/15/2017] [Indexed: 12/17/2023]
Abstract
Background Zingiber officinale Roscoe has been used in traditional medicine for the treatment of neurological disorder. This study aimed to investigate the phenolic contents, antioxidant, acetylcholinesterase enzyme (AChE) inhibitory activities of different fraction of Z. officinale root grown in Vietnam. Methods The roots of Z. officinale are extracted with ethanol 96 % and fractionated with n-hexane, ethyl acetate (EtOAc) and butanol (BuOH) solvents. These fractions evaluated the antioxidant activity by 1,1-Diphenyl -2-picrylhydrazyl (DPPH) assay and AChE inhibitory activity by Ellman's colorimetric method. Results Our data showed that the total phenolic content of EtOAc fraction was highest equivalents to 35.2±1.4 mg quercetin/g of fraction. Our data also demonstrated that EtOAc fraction had the strongest antioxidant activity with IC50 was 8.89±1.37 µg/mL and AChE inhibitory activity with an IC50 value of 22.85±2.37 μg/mL in a dose-dependent manner, followed by BuOH fraction and the n-hexane fraction is the weakest. Detailed kinetic analysis indicated that EtOAc fraction was mixed inhibition type with Ki (representing the affinity of the enzyme and inhibitor) was 30.61±1.43 µg/mL. Conclusions Our results suggest that the EtOAc fraction of Z. officinale may be a promising source of AChE inhibitors for Alzheimer's disease.
Collapse
|
190
|
Veech RL, Bradshaw PC, Clarke K, Curtis W, Pawlosky R, King MT. Ketone bodies mimic the life span extending properties of caloric restriction. IUBMB Life 2017; 69:305-314. [PMID: 28371201 DOI: 10.1002/iub.1627] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/10/2017] [Indexed: 12/27/2022]
Abstract
The extension of life span by caloric restriction has been studied across species from yeast and Caenorhabditis elegans to primates. No generally accepted theory has been proposed to explain these observations. Here, we propose that the life span extension produced by caloric restriction can be duplicated by the metabolic changes induced by ketosis. From nematodes to mice, extension of life span results from decreased signaling through the insulin/insulin-like growth factor receptor signaling (IIS) pathway. Decreased IIS diminishes phosphatidylinositol (3,4,5) triphosphate (PIP3 ) production, leading to reduced PI3K and AKT kinase activity and decreased forkhead box O transcription factor (FOXO) phosphorylation, allowing FOXO proteins to remain in the nucleus. In the nucleus, FOXO proteins increase the transcription of genes encoding antioxidant enzymes, including superoxide dismutase 2, catalase, glutathione peroxidase, and hundreds of other genes. An effective method for combating free radical damage occurs through the metabolism of ketone bodies, ketosis being the characteristic physiological change brought about by caloric restriction from fruit flies to primates. A dietary ketone ester also decreases circulating glucose and insulin leading to decreased IIS. The ketone body, d-β-hydroxybutyrate (d-βHB), is a natural inhibitor of class I and IIa histone deacetylases that repress transcription of the FOXO3a gene. Therefore, ketosis results in transcription of the enzymes of the antioxidant pathways. In addition, the metabolism of ketone bodies results in a more negative redox potential of the NADP antioxidant system, which is a terminal destructor of oxygen free radicals. Addition of d-βHB to cultures of C. elegans extends life span. We hypothesize that increasing the levels of ketone bodies will also extend the life span of humans and that calorie restriction extends life span at least in part through increasing the levels of ketone bodies. An exogenous ketone ester provides a new tool for mimicking the effects of caloric restriction that can be used in future research. The ability to power mitochondria in aged individuals that have limited ability to oxidize glucose metabolites due to pyruvate dehydrogenase inhibition suggests new lines of research for preventative measures and treatments for aging and aging-related disorders. © 2017 The Authors IUBMB Life published by Wiley Periodicals, Inc. on behalf of International Union of Biochemistry and Molecular Biology, 69(5):305-314, 2017.
Collapse
Affiliation(s)
| | - Patrick C Bradshaw
- East Tennessee State University College of Medicine, Johnson City, TN, USA
| | | | | | | | - M Todd King
- Lab of Metabolic Control, NIH/NIAAA, Rockville, MD, USA
| |
Collapse
|
191
|
Dong Y, Cui P, Li Z, Zhang S. Aging asymmetry: systematic survey of changes in age-related biomarkers in the annual fish Nothobranchius guentheri. FISH PHYSIOLOGY AND BIOCHEMISTRY 2017; 43:309-319. [PMID: 27614442 DOI: 10.1007/s10695-016-0288-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 09/02/2016] [Indexed: 06/06/2023]
Abstract
Aging asymmetry is the observation that different tissues age in different ways and at different rates. This has not been assessed in a single organism using multiple biomarkers of aging. Here we clearly demonstrated that the levels of protein oxidation and lipid peroxidation as well as CAT, SOD and GPX activities all showed a tissue-dependent change with advancing age; and DNA repair ability, as revealed by the expression of ercc1 and its protein levels, also exhibited a tissue-specific variation with age. We also found that protein oxidation and lipid peroxidation levels remained relatively stable in the liver, intestine, skin and testis as well as in the brain, eye and heart of young, adult and aged fishes; SOD and GPX activities displayed little variation in the intestine, eye and skin as well as in the brain and skin of young, adult and aged fishes; and low and stable expression of ercc1 was observed in the spleen, eye and heart of young, adult and aged fishes. Collectively, these results indicate that aging is tissue specific and asymmetric in N. guentheri. The observation of aging asymmetry may have practical implications for the application of non-intrusion intervention approaches to prolong lifespan.
Collapse
Affiliation(s)
- Yuan Dong
- Laboratory for Evolution and Development, Department of Marine Biology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Pengfei Cui
- Laboratory for Evolution and Development, Department of Marine Biology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Zhijian Li
- Laboratory for Evolution and Development, Department of Marine Biology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China
| | - Shicui Zhang
- Laboratory for Evolution and Development, Department of Marine Biology, Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao, 266003, China.
| |
Collapse
|
192
|
Ageing is not associated with an altered immune response during Trypanosoma cruzi infection. Exp Gerontol 2017; 90:43-51. [DOI: 10.1016/j.exger.2017.01.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 01/19/2017] [Accepted: 01/23/2017] [Indexed: 11/23/2022]
|
193
|
Li H, Yao Q, Fan J, Du J, Wang J, Peng X. A two-photon NIR-to-NIR fluorescent probe for imaging hydrogen peroxide in living cells. Biosens Bioelectron 2017; 94:536-543. [PMID: 28347967 DOI: 10.1016/j.bios.2017.03.039] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 02/14/2017] [Accepted: 03/18/2017] [Indexed: 10/19/2022]
Abstract
Hydrogen peroxide (H2O2), one of the reactive oxygen species (ROS), plays vital roles in diverse physiological processes. Imbalance of the H2O2 is concerned with serious diseases such as cardiovascular disorders, neurodegenerative diseases, Alzheimer's disease and cancer. Therefore, it is critical to develop efficient methods for monitoring H2O2 in vivo. In this work, a two-photon excitation (860nm) NIR fluorescent turn-on probe TPNR-H2O2 for H2O2 based on Dicyanomethylene-4H-pyran fluorophore is reported, which can be used in solution detection with 13.2-fold NIR fluorescence enhancement, fast response (completed within 40min), excellent sensitivity (DL 72.48nM), and lower cellular auto-fluorescence interference. Importantly, the perfect photostability of TPNR-H2O2 clearly demonstrated that the probe could be applied to imaging intracellular H2O2 for a long time without photobleaching. In addition, through two-photon imaging, this probe was cell permeable and used to monitor the level of endogenous and exogenous H2O2 with promising biological application.
Collapse
Affiliation(s)
- Haidong Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Qichao Yao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Jiangli Fan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Jianjun Du
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Jingyun Wang
- School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China
| | - Xiaojun Peng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
| |
Collapse
|
194
|
Tung BT, Hai NT, Thu DK. Antioxidant and acetylcholinesterase inhibitory activities in vitro of different fraction of Huperzia squarrosa (Forst.) Trevis extract and attenuation of scopolamine-induced cognitive impairment in mice. JOURNAL OF ETHNOPHARMACOLOGY 2017; 198:24-32. [PMID: 28025162 DOI: 10.1016/j.jep.2016.12.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 11/20/2016] [Accepted: 12/21/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Huperzia squarrosa (Forst.) Trevis is used in traditional medicine for improving memory deficits. Alkaloids, triterpenoids, flavonoids are main bioactive compounds of Huperzia squarrosa (Forst.) Trevis. AIM OF THE STUDY This study aimed to investigate the antioxidant, AChE inhibitory activities in vitro of differents fraction of Huperzia squarrosa (Forst.) Trevis extract and neuroprotective effects of EtOAc fraction on scopolamine-induced cognitive impairment in mice. MATERIALS AND METHODS Antioxidant activity was measured by DPPH assay. AChE inhibitory effect in vitro and detail kinetic inhibition mechanism was evaluated by Ellman's assay. For in vivo assay, mice were administrated orally EtOAc fraction (150 and 300mg/kg) for fourteen days, and injected scopolamine at a dose of 1mg/kg intraperitoneally for four days to induce memory injured. The memory behaviors were evaluated using the Morris water maze. ACh levels were measured in brain tissue. Superoxide dismutase (SOD), glutathione peroxidase (GPx) activities, malondialdehyde and protein thiol groups were also evaluated in the brains. RESULTS Our data also demonstrated that EtOAc fraction had the strongest antioxidant with an IC50 value of 9.35±1.68µg/mL and AChE inhibitory activity with an IC50 value of 23.44±3.14μg/mL in a concentration-dependent manner. Kinetic inhibition analysis indicated that EtOAc fraction was mixed inhibition type with Ki (representing the affinity of the enzyme and inhibitor) was 34.75±1.42µg/mL. Scopolamine significantly increased the escape latency time, reduced the crossings number, and swimming time in the target quadrant, while EtOAc fraction reversed these scopolamine-induced effects. EtOAc fraction significantly increased levels of acetylcholine in the brain. EtOAc fraction also significantly decreased oxidative stress in mice. CONCLUSION Our data suggest that EtOAc fraction of Huperzia squarrosa extract exhibited a strong neuroprotective effect on cognitive impairment, and may be a potential candidate for the treatment of Alzheimer.
Collapse
Affiliation(s)
- Bui Thanh Tung
- School of Medicine and Pharmacy, Vietnam National University, Hanoi, Vietnam.
| | - Nguyen Thanh Hai
- School of Medicine and Pharmacy, Vietnam National University, Hanoi, Vietnam.
| | - Dang Kim Thu
- School of Medicine and Pharmacy, Vietnam National University, Hanoi, Vietnam.
| |
Collapse
|
195
|
André P, Villain F. Free radical scavenging properties of mannitol and its role as a constituent of hyaluronic acid fillers: a literature review. Int J Cosmet Sci 2017; 39:355-360. [PMID: 28027572 DOI: 10.1111/ics.12386] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/21/2016] [Indexed: 12/01/2022]
Abstract
Mannitol has both hydrating and antioxidant properties that make it an ideal excipient for use with hyaluronic acid (HA) fillers. This review examines the role of reactive oxygen species in the ageing process and their effects on both endogenous HA and HA products developed for aesthetic use. Evidence is presented to show that the free radical scavenging properties of mannitol provide it with a two-fold mechanism of action when combined with HA fillers: reducing the inflammation and swelling associated with the injection procedure itself, and preventing the degradation of the injected HA by free radicals. Mannitol also has a long- and well-established safety profile in both the food and pharmaceutical industry. Having established the rationale for using mannitol in combination with an HA filler, the products using this strategy are then reviewed. The addition of mannitol to HA fillers is a viable and safe option for improving both short- and long-term HA aesthetic effects.
Collapse
Affiliation(s)
- P André
- Paris-Université Laser Skin Clinic, 157, rue de l'Université, 75007, Paris, France
| | - F Villain
- Merz Pharmaceuticals GmbH, 100 Eckenheimer Landstrasse, 60318, Frankfurt am Main, Germany
| |
Collapse
|
196
|
Dadhania VP, Trivedi PP, Vikram A, Tripathi DN. Nutraceuticals against Neurodegeneration: A Mechanistic Insight. Curr Neuropharmacol 2017; 14:627-40. [PMID: 26725888 PMCID: PMC4981739 DOI: 10.2174/1570159x14666160104142223] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 08/17/2015] [Accepted: 01/01/2016] [Indexed: 12/20/2022] Open
Abstract
The mechanisms underlying neurodegenerative disorders are complex and multifactorial; however, accumulating evidences suggest few common shared pathways. These common pathways include mitochondrial dysfunction, intracellular Ca2+ overload, oxidative stress and inflammation. Often multiple pathways co-exist, and therefore limit the benefits of therapeutic interventions. Nutraceuticals have recently gained importance owing to their multifaceted effects. These food-based approaches are believed to target multiple pathways in a slow but more physiological manner without causing severe adverse effects. Available information strongly supports the notion that apart from preventing the onset of neuronal damage, nutraceuticals can potentially attenuate the continued progression of neuronal destruction. In this article, we i) review the common pathways involved in the pathogenesis of the toxicants-induced neurotoxicity and neurodegenerative disorders with special emphasis on Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), Multiple sclerosis (MS) and Amyotrophic lateral sclerosis (ALS), and ii) summarize current research advancements on the effects of nutraceuticals against these detrimental pathways.
Collapse
Affiliation(s)
| | | | - Ajit Vikram
- Department of Internal Medicine, The University of Iowa, Iowa City, IA-52240, USA.
| | - Durga Nand Tripathi
- DNT at Center for Translational Cancer Research, Institute of Biosciences & Technology, Texas A&M University Health Science Center, Houston, TX-77030, USA.
| |
Collapse
|
197
|
Michalak P, Kang L, Sarup PM, Schou MF, Loeschcke V. Nucleotide diversity inflation as a genome-wide response to experimental lifespan extension in Drosophila melanogaster. BMC Genomics 2017; 18:84. [PMID: 28088192 PMCID: PMC5237518 DOI: 10.1186/s12864-017-3485-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 01/10/2017] [Indexed: 11/20/2022] Open
Abstract
Background Evolutionary theory predicts that antagonistically selected alleles, such as those with divergent pleiotropic effects in early and late life, may often reach intermediate population frequencies due to balancing selection, an elusive process when sought out empirically. Alternatively, genetic diversity may increase as a result of positive frequency-dependent selection and genetic purging in bottlenecked populations. Results While experimental evolution systems with directional phenotypic selection typically result in at least local heterozygosity loss, we report that selection for increased lifespan in Drosophila melanogaster leads to an extensive genome-wide increase of nucleotide diversity in the selected lines compared to replicate control lines, pronounced in regions with no or low recombination, such as chromosome 4 and centromere neighborhoods. These changes, particularly in coding sequences, are most consistent with the operation of balancing selection and the antagonistic pleiotropy theory of aging and life history traits that tend to be intercorrelated. Genes involved in antioxidant defenses, along with multiple lncRNAs, were among those most affected by balancing selection. Despite the overwhelming genetic diversification and the paucity of selective sweep regions, two genes with functions important for central nervous system and memory, Ptp10D and Ank2, evolved under positive selection in the longevity lines. Conclusions Overall, the ‘evolve-and-resequence’ experimental approach proves successful in providing unique insights into the complex evolutionary dynamics of genomic regions responsible for longevity. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3485-0) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Pawel Michalak
- Biocomplexity Institute, Virginia Tech, 1015 Life Science Circle, Blacksburg, VA, 24061, USA.
| | - Lin Kang
- Biocomplexity Institute, Virginia Tech, 1015 Life Science Circle, Blacksburg, VA, 24061, USA
| | - Pernille M Sarup
- Department of Bioscience, Aarhus University, Ny Munkegade 114-116, Aarhus, DK-8000, Denmark
| | - Mads F Schou
- Department of Bioscience, Aarhus University, Ny Munkegade 114-116, Aarhus, DK-8000, Denmark
| | - Volker Loeschcke
- Department of Bioscience, Aarhus University, Ny Munkegade 114-116, Aarhus, DK-8000, Denmark.
| |
Collapse
|
198
|
Sharifzadeh M, Ranjbar A, Hosseini A, Khanavi M. The Effect of Green Tea Extract on Oxidative Stress and Spatial Learning in Streptozotocin-diabetic Rats. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2017; 16:201-209. [PMID: 28496475 PMCID: PMC5423247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Diabetes mellitus is associated with distribution of cognitive functioning. Hyperglycemia induced oxidative stress has been proposed as a cause of memory complications of diabetes including cognitive impairment. The aim of this study was to examine total green tea extract (TGTE), a potent free radical scavenger against spatial impairment in Streptozotocin-diabetic rats. Eight weeks after diabetes induction, TGTE was administrated throught drinking water 3 mg/L. The learning and memory behavior was evaluated with Morris water maze task in male rats. Then, for estimation of oxidative stress parameters such as lipid peroxidation (LPO), total antioxidant capacity (FRAP) and total thiol groups in blood were measured. The total green tea extract showed improved cognitive impairment in diabetic groups but these changes weren't significant. There was also significant increase FRAP level and total thiol groups in treated green tea groups vs. CONTROL group. This study demonstrated the effectiveness of TGTE on spatial impairment and oxidative stress induced in diabetes mellitus.
Collapse
Affiliation(s)
- Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Akram Ranjbar
- Department of Toxicology and Pharmacology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Asieh Hosseini
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Mahnaze Khanavi
- Department of Pharmacogenosy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
199
|
Go KL, Lee S, Behrns KE, Kim JS. Mitochondrial Damage and Mitophagy in Ischemia/Reperfusion-Induced Liver Injury. MOLECULES, SYSTEMS AND SIGNALING IN LIVER INJURY 2017:183-219. [DOI: 10.1007/978-3-319-58106-4_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
|
200
|
Gao L, Zhang R, Lan J, Ning R, Wu D, Chen D, Zhao W. β-Dihydroagarofuran-Type Sesquiterpenes from the Seeds of Celastrus monospermus and Their Lifespan-Extending Effects on the Nematode Caenorhabditis elegans. JOURNAL OF NATURAL PRODUCTS 2016; 79:3039-3046. [PMID: 28006915 DOI: 10.1021/acs.jnatprod.6b00648] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seventeen β-dihydroagarofuran-type sesquiterpenes were isolated from the seeds of Celastrus monospermus, and, among them, 15 (1-15) were identified as new natural products. Nine isolates were evaluated for their lifespan-extending effect using the standard model animal nematode Caenorhabditis elegans. As a result, all of the tested compounds prolonged the lifespan of C. elegans when compared to the blank control group (p < 0.0001). Among them, celaspermin E (5) extended the average lifespan and maximum lifespan of C. elegans, with effects similar to those of rapamycin, a positive control that has been found experimentally to delay the aging process of yeasts, worms, fruit flies, and mice.
Collapse
Affiliation(s)
- Lei Gao
- Department of Natural Product Chemistry and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Rujun Zhang
- Department of Natural Product Chemistry and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| | - Jianfeng Lan
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center, Nanjing University , Nanjing 210061, People's Republic of China
| | - Ruonan Ning
- Department of Natural Product Chemistry and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Di Wu
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center, Nanjing University , Nanjing 210061, People's Republic of China
| | - Di Chen
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center, Nanjing University , Nanjing 210061, People's Republic of China
| | - Weimin Zhao
- Department of Natural Product Chemistry and State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, People's Republic of China
| |
Collapse
|