1
|
Zuo Q, Gao X, Fu X, Song L, Cen M, Qin S, Wu J. Association between mixed exposure to endocrine-disrupting chemicals and cognitive function in elderly Americans. Public Health 2024; 228:36-42. [PMID: 38262207 DOI: 10.1016/j.puhe.2023.12.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/30/2023] [Accepted: 12/14/2023] [Indexed: 01/25/2024]
Abstract
OBJECTIVES Studies exploring the relationship between mixed exposure to endocrine-disrupting chemicals (EDCs) and cognition are limited, with even more scarce studies conducted in the elderly. The aim of this study was to investigate the association between mixed exposure to five categories of EDCs and cognition in elderly Americans. STUDY DESIGN Cross-sectional study. METHODS 727 participants from the 2011-2014 National Health and Nutrition Examination Survey were incorporated into this study, and the levels of 47 EDC metabolites were measured. Cognitive function was assessed using immediate recall test (IRT), delayed recall test (DRT), animal fluency test (AFT), and digit symbol substitution test (DSST), and all the cognitive test scores were standardized. The individual and combined effects of EDC metabolites on the cognitive function in older adults were assessed using three analytical methods. RESULTS The results showed that exposure to perfluorononanoic acid, polychlorinated biphenyl (PCB) 199, and PCB 206 was associated with the z-scores on the cognitive tests. Negative associations between mixed exposure to EDCs and the AFT and Global z-scores and a positive relationship with the DRT z-score were found in the WQS regression. The BKMR results revealed a positive trend between the mixture of EDCs and the DRT z-score. However, compared to the median, exposure to mixtures in the 45th percentile and below was associated with a decreased DRT z-score. CONCLUSIONS Mixed exposure to EDCs may adversely affect the global cognitive function in elderly individuals. Necessary measures are needed to restrict EDCs use to protect the cognitive health of older adults.
Collapse
Affiliation(s)
- Ql Zuo
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xx Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Xh Fu
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Ll Song
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Mq Cen
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - Sf Qin
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
| | - J Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Ministry of Education Key Laboratory of Environment and Health, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China.
| |
Collapse
|
2
|
Fanfarillo F, Ferraguti G, Lucarelli M, Francati S, Barbato C, Minni A, Ceccanti M, Tarani L, Petrella C, Fiore M. The Impact of ROS and NGF in the Gliomagenesis and their Emerging Implications in the Glioma Treatment. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2024; 23:449-462. [PMID: 37016521 DOI: 10.2174/1871527322666230403105438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/19/2022] [Accepted: 02/01/2023] [Indexed: 04/06/2023]
Abstract
Reactive oxygen species (ROS) are highly reactive molecules derived from molecular oxygen (O2). ROS sources can be endogenous, such as cellular organelles and inflammatory cells, or exogenous, such as ionizing radiation, alcohol, food, tobacco, chemotherapeutical agents and infectious agents. Oxidative stress results in damage of several cellular structures (lipids, proteins, lipoproteins, and DNA) and is implicated in various disease states such as atherosclerosis, diabetes, cancer, neurodegeneration, and aging. A large body of studies showed that ROS plays an important role in carcinogenesis. Indeed, increased production of ROS causes accumulation in DNA damage leading to tumorigenesis. Various investigations demonstrated the involvement of ROS in gliomagenesis. The most common type of primary intracranial tumor in adults is represented by glioma. Furthermore, there is growing attention on the role of the Nerve Growth Factor (NGF) in brain tumor pathogenesis. NGF is a growth factor belonging to the family of neurotrophins. It is involved in neuronal differentiation, proliferation and survival. Studies were conducted to investigate NGF pathogenesis's role as a pro- or anti-tumoral factor in brain tumors. It has been observed that NGF can induce both differentiation and proliferation in cells. The involvement of NGF in the pathogenesis of brain tumors leads to the hypothesis of a possible implication of NGF in new therapeutic strategies. Recent studies have focused on the role of neurotrophin receptors as potential targets in glioma therapy. This review provides an updated overview of the role of ROS and NGF in gliomagenesis and their emerging role in glioma treatment.
Collapse
Affiliation(s)
| | - Giampiero Ferraguti
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Marco Lucarelli
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Silvia Francati
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Antonio Minni
- Department of Sensory Organs, Sapienza University of Rome, Rome, Italy
| | - Mauro Ceccanti
- SITAC, Società Italiana per il Trattamento dell'Alcolismo e le sue Complicanze, Rome, Italy
| | - Luigi Tarani
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Carla Petrella
- Institute of Biochemistry and Cell Biology, IBBC-CNR, Rome, Italy
| | - Marco Fiore
- Institute of Biochemistry and Cell Biology, IBBC-CNR, Rome, Italy
| |
Collapse
|
3
|
Zhong J, Zhao L, Wu W, Chen J, Yuan S, Zhang X, Wang Z. Transcranial near-infrared laser improves postoperative neurocognitive disorder in aged mice via SIRT3/AMPK/Nrf2 pathway. Front Neurosci 2023; 16:1100915. [PMID: 36760797 PMCID: PMC9904281 DOI: 10.3389/fnins.2022.1100915] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 12/29/2022] [Indexed: 01/26/2023] Open
Abstract
Background Postoperative neurocognitive disorder (PND) is a common central nervous system (CNS) complication that might increase the morbidity and mortality of elderly patients after anesthesia/surgery. Neuroinflammation, oxidative stress, and synaptic dysfunction are closely related to cognitive dysfunction, an important clinical feature of PND. Transcranial near-infrared laser (TNIL) is regarded as an effective treatment for cognitive-related diseases by improving mitochondrial function and alleviating neuroinflammation and oxidative stress damage. Materials and methods Aged male C57BL/6 mice underwent a carotid artery exposure procedure under isoflurane anesthesia. We treated PND-aged mice for three consecutive days (4 h post-operation, 1-laser) with 810 nm continuous wave (CW) laser 18 J/cm2 at 120 mW/cm2. The post-treatment evaluation included behavioral tests, RTq-PCR, immunofluorescence, and Western blot. Results The results demonstrated that TNIL improved PND and the levels of synaptic function-associated proteins such as post-synaptic density protein 95 (PSD95), synaptophysin (SYP), and brain-derived neurotrophic factor (BDNF). Besides, neuroinflammatory cytokine levels of tumor necrosis factor (TNF)-α and interleukin (IL)-1β as well as microglia activation and oxidative stress damage were attenuated after TNIL treatment in aged mice with PND. Further investigation suggested that TNIL relieved oxidative stress response by activating the SIRT3/AMPK/Nrf2 pathway. Conclusion Transcranial near-infrared laser improved cognitive impairment in aged mice with PND, which may be a promising therapeutic for PND.
Collapse
Affiliation(s)
- Junying Zhong
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Le Zhao
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wensi Wu
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jiawei Chen
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Shangyan Yuan
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Xiaojun Zhang
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China,*Correspondence: Xiaojun Zhang,
| | - Zhi Wang
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China,Zhi Wang,
| |
Collapse
|
4
|
Chang SR, Liu JG, Li H, Liu MX, Shi DD, Zhou LJ. Pharmaceutical and pharmacological studies of Shen Ma Yi Zhi granule for prevention of vascular dementia: A review. Front Neurosci 2022; 16:1044572. [PMID: 36507350 PMCID: PMC9731835 DOI: 10.3389/fnins.2022.1044572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/04/2022] [Indexed: 11/25/2022] Open
Abstract
Background: With dementia significantly increasing hospitalization and disability rates, worldwide aging of the population presents major challenges to public health. The majority of cases of cognitive dysfunction among the elderly, however, are characterized by an identifiable, preventable and treatable vascular component. As such, increased study of preventative methods in the context of dementia is warranted. Traditional Chinese medicine compounds have been reported to be neuroprotective and improve cognitive function via a variety of mechanisms. Shen Ma Yi Zhi granule (SMYZG) is one such collection of compounds that has been proven clinically effective. Pharmacological mechanisms of action, pharmacokinetics and clinical applications of SMYZG have been previously studied using a variety of vascular dementia animal models. SMYZG activates and regulates four main signaling pathways relevant to vascular dementia including the AMPK/PPARα/PGC-1α/UCP2, Nrf2/HO-1, HIF-1/VEGF/Notch, and VEGF/Flk-1/p8 MAPK pathways. Furthermore, SMYZG influences anti-inflammatory and anti-oxidant stress responses, reverses demyelination of brain white matter and vascular endothelium, regulates pericyte function and normalizes mitochondrial metabolism. Neuroprotective effects of SMYZG, as well as those promoting regeneration of vascular endothelium, have also been reported in studies of rat models of vascular dementia. Future research concerning SMYG is warranted for development of vascular dementia preventative management strategies.
Collapse
Affiliation(s)
- Su-rui Chang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Graduate School, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jian-gang Liu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,National Clinical Research Center for Chinese Medicine Cardiology, Beijing, China,*Correspondence: Jian-gang Liu,
| | - Hao Li
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Institute of Geriatrics of China Academy of Chinese Medical Sciences, Beijing, China,Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Hao Li,
| | - Mei-xia Liu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Institute of Geriatrics of China Academy of Chinese Medical Sciences, Beijing, China
| | - Dan-dan Shi
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Institute of Geriatrics of China Academy of Chinese Medical Sciences, Beijing, China
| | - Li-juan Zhou
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Institute of Geriatrics of China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
5
|
Gene- and Gender-Related Decrease in Serum BDNF Levels in Alzheimer's Disease. Int J Mol Sci 2022; 23:ijms232314599. [PMID: 36498925 PMCID: PMC9740390 DOI: 10.3390/ijms232314599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/24/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) has a protective role in Alzheimer's disease (AD). Oxidative stress and inflammatory cytokines are potentially implicated in AD risk. In this study, BDNF was detected in serum of AD and mild cognitive impairment (MCI) patients and investigated in association with gene polymorphisms of BDNF (Val66Met and C270T), of some oxidative stress-related genes (FOXO3A, SIRT3, GLO1, and SOD2), and of interleukin-1 family genes (IL-1α, IL-1β, and IL-38). The APOE status and mini-mental state examination (MMSE) score were also evaluated. Serum BDNF was significantly lower in AD (p = 0.029), especially when comparing the female subsets (p = 0.005). Patients with BDNFVal/Val homozygous also had significantly lower circulating BDNF compared with controls (p = 0.010). Moreover, lower BDNF was associated with the presence of the T mutant allele of IL-1α(rs1800587) in AD (p = 0.040). These results were even more significant in the female subsets (BDNFVal/Val, p = 0.001; IL-1α, p = 0.013; males: ns). In conclusion, reduced serum levels of BDNF were found in AD; polymorphisms of the IL-1α and BDNF genes appear to be involved in changes in serum BDNF, particularly in female patients, while no effects of other gene variants affecting oxidative stress have been found. These findings add another step in identifying gender-related susceptibility to AD.
Collapse
|
6
|
Jiang W, Liu F, Li H, Wang K, Cao X, Xu X, Zhou Y, Zou J, Zhang X, Cui X. TREM2 ameliorates anesthesia and surgery-induced cognitive impairment by regulating mitophagy and NLRP3 inflammasome in aged C57/BL6 mice. Neurotoxicology 2022; 90:216-227. [PMID: 35447280 DOI: 10.1016/j.neuro.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/25/2022]
Abstract
Postoperative cognitive dysfunction (POCD) is a major postoperative complication. Triggering receptor expressed on myeloid cells 2 (TREM2) exerts a neuroprotective function against neuro-inflammatory responses. The present study investigated the role of TREM2 in anesthesia and surgery-induced cognitive impairment and the potential related mechanism. Our results revealed that TREM2 was downregulated, coupled with activation of the NLRP3 inflammasome and subsequent IL-1β expression on postoperative day 3. A corresponding decline in PSD-95 and BDNF was found at the same time point. The key regulator of mitophagy PINK1 and Parkin protein levels were significantly decreased following surgery and anesthesia. TREM2 overexpression partially reversed postoperative cognitive impairment and enhanced PSD-95 and BDNF expression. TREM2 overexpression also improved mitophagy function and inhibited activation of the NLRP3 inflammasome and associated production of IL-1β. Our findings demonstrate that TREM2 rescues anesthesia and surgery-induced spatial learning and memory impairment and neuro-inflammation in aged C57/BL6 mice, which may be at least partially mediated through the activation of mitophagy and subsequent inhibition of the NLRP3 inflammasome.
Collapse
Affiliation(s)
- Wenwen Jiang
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Fang Liu
- Department of Neurology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Hongqing Li
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Kexin Wang
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xuezhao Cao
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Xiaohan Xu
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yongjian Zhou
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jie Zou
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xinyue Zhang
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiaotong Cui
- Department of Anesthesiology, the First Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
7
|
Mikulska J, Juszczyk G, Gawrońska-Grzywacz M, Herbet M. HPA Axis in the Pathomechanism of Depression and Schizophrenia: New Therapeutic Strategies Based on Its Participation. Brain Sci 2021; 11:brainsci11101298. [PMID: 34679364 PMCID: PMC8533829 DOI: 10.3390/brainsci11101298] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 12/27/2022] Open
Abstract
The hypothalamic-pituitary-adrenal (HPA) axis is involved in the pathophysiology of many neuropsychiatric disorders. Increased HPA axis activity can be observed during chronic stress, which plays a key role in the pathophysiology of depression. Overactivity of the HPA axis occurs in major depressive disorder (MDD), leading to cognitive dysfunction and reduced mood. There is also a correlation between the HPA axis activation and gut microbiota, which has a significant impact on the development of MDD. It is believed that the gut microbiota can influence the HPA axis function through the activity of cytokines, prostaglandins, or bacterial antigens of various microbial species. The activity of the HPA axis in schizophrenia varies and depends mainly on the severity of the disease. This review summarizes the involvement of the HPA axis in the pathogenesis of neuropsychiatric disorders, focusing on major depression and schizophrenia, and highlights a possible correlation between these conditions. Although many effective antidepressants are available, a large proportion of patients do not respond to initial treatment. This review also discusses new therapeutic strategies that affect the HPA axis, such as glucocorticoid receptor (GR) antagonists, vasopressin V1B receptor antagonists and non-psychoactive CB1 receptor agonists in depression and/or schizophrenia.
Collapse
|
8
|
Jadhav A, Khaire A, Joshi S. Exploring the role of oxidative stress, fatty acids and neurotrophins in gestational diabetes mellitus. Growth Factors 2020; 38:226-234. [PMID: 33703982 DOI: 10.1080/08977194.2021.1895143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Gestational diabetes mellitus (GDM) constitutes an unfavorable intrauterine environment for embryonic and feto-placental development. Women with GDM are at higher risk for materno-fetal complications and placental abnormalities. The placenta acts as an interface between the maternal and fetal circulations and also plays an important role in protecting the fetus from adverse effects of maternal metabolic conditions. One of the earliest abnormalities observed in GDM pregnancies is increased oxidative stress in the placenta which affects fetal development. Imbalances in maternal nutrition particularly long-chain polyunsaturated fatty acid (LCPUFA) intake and/or metabolism lead to increased oxidative stress. Reports indicate that oxidative stress and LCPUFA such as docosahexaenoic acid affect the levels of neurotrophins. The present review aims to provide insights into a mechanistic link between oxidative stress, LCPUFA and neurotrophin in the placenta in women with GDM and its implications for neurodevelopmental outcomes in children.
Collapse
Affiliation(s)
- Anjali Jadhav
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Amrita Khaire
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| | - Sadhana Joshi
- Mother and Child Health, Interactive Research School for Health Affairs (IRSHA), Bharati Vidyapeeth (Deemed to be University), Pune, India
| |
Collapse
|
9
|
Micarelli A, Cormano A, Caccamo D, Alessandrini M. Olfactory-Related Quality of Life in Multiple Chemical Sensitivity: A Genetic-Acquired Factors Model. Int J Mol Sci 2019; 21:ijms21010156. [PMID: 31881664 PMCID: PMC6981591 DOI: 10.3390/ijms21010156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/21/2019] [Accepted: 12/24/2019] [Indexed: 12/19/2022] Open
Abstract
Genetic polymorphisms as well as environmental exposures to chemical compounds, iatrogenic, psychological, and physical trauma may play a pathophysiological role in multiple chemical sensitivity (MCS) olfactory complaints, given that xenobiotic metabolism is influenced by sequence variations in genes of metabolizing enzymes. Thus, the aim of the present study was to depict-by means of multiple regression analysis-how different genetic conditions, grouped according to their function as well as clinical background and environmental exposure may interfere with those olfactory complaints referred by MCS patients. Therefore, MCS patients after gene polymorphism sequencing, the olfactory-related quality of life score-calculated by means of the Questionnaire of Olfactory Disorder in forty-six MCS patients-have been found to significantly rely on the phase I and II enzymes score and exposure to previous compounds and surgical treatments. The present work-implementing for the first time a genetic-acquired factors model on a regression analysis-further reinforces those theories, positing MCS as a complex, multifactorial, disease in which the genetic risk related to phase I and II enzymes involved in xenobiotic detoxification, olfactory, and neurodegenerative diseases play a necessary, but probably not sufficient role, along the pathophysiological route of the disease.
Collapse
Affiliation(s)
- Alessandro Micarelli
- Institute of Mountain Emergency Medicine, EURAC Research, I-39100 Bolzano, Italy
- ITER Center for Balance and Rehabilitation Research (ICBRR), 02032 Rome, Italy
- Correspondence:
| | | | - Daniela Caccamo
- Department of Biomedical Sciences, Dental Sciences and Morpho-functional Imaging, Polyclinic Hospital University, 98124 Messina, Italy;
| | - Marco Alessandrini
- Department of Clinical Sciences and Translational Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy;
| |
Collapse
|
10
|
Peng S, Li P, Liu P, Yan H, Wang J, Lu W, Liu C, Zhou Y. Cistanches alleviates sevoflurane-induced cognitive dysfunction by regulating PPAR-γ-dependent antioxidant and anti-inflammatory in rats. J Cell Mol Med 2019; 24:1345-1359. [PMID: 31802591 PMCID: PMC6991648 DOI: 10.1111/jcmm.14807] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 09/06/2019] [Accepted: 09/29/2019] [Indexed: 11/30/2022] Open
Abstract
This study aimed to investigate the protective effects and underlying mechanisms of cistanche on sevoflurane‐induced aged cognitive dysfunction rat model. Aged (24 months) male SD rats were randomly assigned to four groups: control group, sevoflurane group, control + cistanche and sevoflurane + cistanche group. Subsequently, inflammatory cytokine levels were measured by ELISA, and the cognitive dysfunction of rats was evaluated by water maze test, open‐field test and the fear conditioning test. Three days following anaesthesia, the rats were killed and hippocampus was harvested for the analysis of relative biomolecules. The oxidative stress level was indicated as nitrite and MDA concentration, along with the SOD and CAT activity. Finally, PPAR‐γ antagonist was used to explore the mechanism of cistanche in vivo. The results showed that after inhaling the sevoflurane, 24‐ but not 3‐month‐old male SD rats developed obvious cognitive impairments in the behaviour test 3 days after anaesthesia. Intraperitoneal injection of cistanche at the dose of 50 mg/kg for 3 consecutive days before anaesthesia alleviated the sevoflurane‐induced elevation of neuroinflammation levels and significantly attenuated the hippocampus‐dependent memory impairments in 24‐month‐old rats. Cistanche also reduced the oxidative stress by decreasing nitrite and MDA while increasing the SOD and CAT activity. Moreover, such treatment also inhibited the activation of microglia. In addition, we demonstrated that PPAR‐γ inhibition conversely alleviated cistanche‐induced protective effect. Taken together, we demonstrated that cistanche can exert antioxidant, anti‐inflammatory, anti‐apoptosis and anti‐activation of microglia effects on the development of sevoflurane‐induced cognitive dysfunction by activating PPAR‐γ signalling.
Collapse
Affiliation(s)
- Sheng Peng
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Pengyi Li
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Red Cross Cancer Center, Nanjing, Jiangsu, China
| | - Peirong Liu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Hongzhu Yan
- Department of Pathology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Juan Wang
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Weihua Lu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Chunliang Liu
- Department of Anesthesiology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| | - Yixin Zhou
- Department of Neurology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, China
| |
Collapse
|
11
|
Elsner VR, Dorneles GP, Santos MA, da Silva IM, Romão P, Peres A. Exercise-induced BDNF production by mononuclear cells of sedentary and physically active obese men. J Sports Med Phys Fitness 2019; 60:435-441. [PMID: 31665880 DOI: 10.23736/s0022-4707.19.10113-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Obesity and low physical activity changes the redox state and neurotrophin secretion by leukocytes. However, the role of exercise on brain derived neurotrophic factor (BDNF) production and oxidative stress markers of peripheral blood mononuclear cells (PBMC) remains unknown. This study aimed to verify the impact of acute maximal exercise on oxidative stress markers and the BDNF production by stimulated PBMC from sedentary and physically active obese men. METHODS PBMC from twelve sedentary obese (SED group) and twelve regular exercisers (EXE group) obese men were collected before, immediately and 1-h after maximal exercise. PBMC were stimulated with lipopolysaccharide (LPS) to evaluate the BDNF and nitrite production, lipid peroxidation, and antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) activities. RESULTS PBMC from EXE group presented higher BDNF production (P=0.03) and lower TBARS levels than SED group at baseline. Maximal exercise increased BDNF and nitrite production, and lipid peroxidation immediately and 1-h after the bout in both groups. The EXE group presented higher superoxide dismutase activity immediately after bout and higher catalase activity 1-h after bout in PBMC. On the other hand, PBMC from SED group had lower superoxide dismutase activity immediately after exercise. Furthermore, PBMC from EXE group presented higher BDNF production and SOD activity and lower TBARS concentrations than SED group immediately after maximal exercise. CONCLUSIONS Maximal exercise changes the redox state and enhances BDNF production by LPS-stimulated PBMC in obese individuals.
Collapse
Affiliation(s)
| | - Gilson P Dorneles
- Cellular and Molecular Immunology Lab, Department of Health Basic Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil -
| | - Maeli A Santos
- Cellular and Molecular Immunology Lab, Department of Health Basic Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Igor M da Silva
- Cellular and Molecular Immunology Lab, Department of Health Basic Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Pedro Romão
- Cellular and Molecular Immunology Lab, Department of Health Basic Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Alessandra Peres
- Cellular and Molecular Immunology Lab, Department of Health Basic Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| |
Collapse
|
12
|
Mahdinia R, Goudarzi I, Lashkarbolouki T, Salmani ME. Vitamin E attenuates alterations in learning, memory and BDNF levels caused by perinatal ethanol exposure. Nutr Neurosci 2019; 24:747-761. [PMID: 31607237 DOI: 10.1080/1028415x.2019.1674523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Objective: Alcohol exposure during pregnancy affects the developing fetus and causes a variety of physical and neurological abnormalities. Here we aim to study the effects of vitamin E on spatial learning and memory deficits and on changes in hippocampal brain-derived neurotrophic factor (BDNF) levels following perinatal ethanol exposure in rats. Method: Pregnant Wistar rats received ethanol (4 g/kg) and vitamin E (doses of 100, 200, and 400 mg/kg) on day 0 of gestation (GD) until weaning (28 days). On postnatal days (PND) 29, the performance of spatial learning and memory of rats were measured using the Morris water maze (MWM). The expression of BDNF protein levels in the hippocampus was assayed using BDNF ELISA kits. Results: Ethanol exposed group showed higher escape latency during training, reduced time spent in the target quadrant, higher escape location latency and average proximity in probe test. Vitamin E with doses of 100, 200 and 400 mg/kg significantly reduced escape latency during training. Also, vitamin E (400 mg/kg) significantly increased time spent in target quadrant, decreased escape location latency and average proximity in probe test. Maternal ethanol treatment significantly reduced the expression of BDNF protein in the hippocampus of offspring, whereas administration of vitamin E (400 mg/kg) significantly increased hippocampal BDNF in ethanol-treated rats. Discussion: Vitamin E administration dose-dependently ameliorate learning and memory deficits induced by perinatal ethanol exposure and increased hippocampal BDNF levels. BDNF may be implicated in the beneficial effects of vitamin E on learning and memory in the perinatal ethanol-exposed rat.
Collapse
Affiliation(s)
| | - Iran Goudarzi
- School of Biology, Damghan University , Damghan , Iran
| | | | | |
Collapse
|
13
|
Zhang Y, Zhang R, Sun H, Chen Q, Yu X, Zhang T, Yi M, Liu JX. Copper inhibits hatching of fish embryos via inducing reactive oxygen species and down-regulating Wnt signaling. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 205:156-164. [PMID: 30388615 DOI: 10.1016/j.aquatox.2018.10.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/20/2018] [Accepted: 10/22/2018] [Indexed: 05/26/2023]
Abstract
The copper ion (Cu2+) has been reported to suppress the hatching of fish. However, little is known about the underlying mechanism. In this study, copper nanoparticles (CuNPs) and Cu2+ were shown to significantly suppress hatching of zebrafish in a dosage-dependent manner, and reactive oxygen species (ROS) scavengers NAC (N-acetylcysteine) & GSH (reduced glutathione) and Wnt signaling agonist BIO (6-bromoindirubin-3'-oxime) significantly alleviated the suppressing effects of Cu2+ and CuNPs on egg hatching. Mechanistically, NAC, GSH, and BIO recovered the egg hatching in copper-treated group via increasing the embryonic motility rather than stimulating the expression and secretion of hatching enzymes before hatching. Additionally, no significant difference in egg hatching was observed between the control and Cu2+-treated group at 72 hpf (hours post fertilization) in cox17 mutant embryos, in which little ROS was producd after copper stimulation. This may be the first report that Cu2+ and CuNPs suppress embryonic motility and the subsequent hatching via inducing ROS and at the same time down-regulating Wnt signaling in fish embryos.
Collapse
Affiliation(s)
- YanJun Zhang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - RuiTao Zhang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - HaoJie Sun
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qi Chen
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - XueDong Yu
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ting Zhang
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ming Yi
- Department of Physics, College of Science, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Jing-Xia Liu
- College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China; Collaborative Innovation Center for Efficient and Health Production of Fisheries in Hunan Province, Hunan, Changde, 415000, China.
| |
Collapse
|
14
|
Luca A, Calandra C, Luca M. Molecular Bases of Alzheimer's Disease and Neurodegeneration: The Role of Neuroglia. Aging Dis 2018; 9:1134-1152. [PMID: 30574424 PMCID: PMC6284765 DOI: 10.14336/ad.2018.0201] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 02/01/2018] [Indexed: 12/13/2022] Open
Abstract
Neuroglia is an umbrella term indicating different cellular types that play a pivotal role in the brain, being involved in its development and functional homeostasis. Glial cells are becoming the focus of recent researches pertaining the pathogenesis of neurodegenerative disorders, Alzheimer's Disease (AD) in particular. In fact, activated microglia is the main determinant of neuroinflammation, contributing to neurodegeneration. In addition, the oxidative insult occurring during pathological brain aging can activate glial cells that, in turn, can favor the production of free radicals. Moreover, the recent Glycogen Synthase Kinase 3 (GSK-3) hypothesis of AD suggests that GSK3, involved in the regulation of glial cells functioning, could exert a role in amyloid deposition and tau hyper-phosphorylation. In this review, we briefly describe the main physiological functions of the glial cells and discuss the link between neuroglia and the most studied molecular bases of AD. In addition, we dedicate a section to the glial changes occurring in AD, with particular attention to their role in terms of neurodegeneration. In the light of the literature data, neuroglia could play a fundamental role in AD pathogenesis and progression. Further studies are needed to shed light on this topic.
Collapse
Affiliation(s)
- Antonina Luca
- Department of Medical and Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, University Hospital Policlinico-Vittorio Emanuele, Catania, 95100 Sicily, Italy
| | - Carmela Calandra
- Department of Medical and Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, University Hospital Policlinico-Vittorio Emanuele, Catania, 95100 Sicily, Italy
| | - Maria Luca
- Department of General Surgery and Medical-Surgical Specialties, Dermatology Clinic, University Hospital Policlinico-Vittorio Emanuele, Catania, 95100 Sicily, Italy
| |
Collapse
|
15
|
Netto MB, de Oliveira Junior AN, Goldim M, Mathias K, Fileti ME, da Rosa N, Laurentino AO, de Farias BX, Costa AB, Rezin GT, Fortunato JJ, Giustina AD, Barichello T, Dal-Pizzol F, Petronilho F. Oxidative stress and mitochondrial dysfunction contributes to postoperative cognitive dysfunction in elderly rats. Brain Behav Immun 2018; 73:661-669. [PMID: 30041011 DOI: 10.1016/j.bbi.2018.07.016] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/13/2018] [Accepted: 07/20/2018] [Indexed: 11/25/2022] Open
Abstract
Postoperative cognitive dysfunction (POCD) is defined by cognitive impairment determined by neuropsychological tests from before to after surgery. Several mechanisms have been proposed in this bidirectional communication between the immune system and the brain after surgery. We aimed at understanding the mechanisms underlying POCD elderly rats in an experimental tibial fracture model. Elderly male Wistar rats were subjected to tibial fracture (TF) model. Control (sham) and fracture (TF) groups were followed to determine nitrite/nitrate concentration; oxidative damage to lipids and proteins; the activity of antioxidant enzymes (superoxide dismutase-SOD and catalase-CAT), mitochondrial respiratory chain enzymes, and creatine kinase (CK); and BDNF levels in the hippocampus and prefrontal cortex (at 24 h and at seven days) and cognitive function through habituation to the open field task and novel object recognition task (only at seven days). TF group presented increased concentration of nitrite/nitrate, hippocampal lipid peroxidation at seven days, protein oxidative damage in the prefrontal cortex and hippocampus at 24 h, decreased antioxidant activity in both structures on the first postoperative day and compromised function of the mitochondrial respiratory chain complexes as well as the CK enzyme. In addition, the levels of BDNF were reduced and memory function was impaired in the TF group. In conclusion, elderly rats submitted to an experimental model of tibial fracture displayed memory impairment accompanied by an increase in oxidative stress, mitochondrial dysfunction and reduced neurotrophin level.
Collapse
Affiliation(s)
- Martins Back Netto
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Aloir Neri de Oliveira Junior
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Mariana Goldim
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Khiany Mathias
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Maria Eduarda Fileti
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Naiana da Rosa
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Ana Olivia Laurentino
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Bianca Xavier de Farias
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Ana Beatriz Costa
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Gislaine Tezza Rezin
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Jucelia Jeremias Fortunato
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Amanda Della Giustina
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil
| | - Tatiana Barichello
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil; Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Felipe Dal-Pizzol
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Fabricia Petronilho
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarão, SC, Brazil.
| |
Collapse
|
16
|
A. El-Laithy N, M.E. Mahdy E, R. Youness E, Shafee N, S.S. Mowafy M, M. Mabrouk M. Effect of Co Enzyme Q10 Alone or in Combination with Vitamin C on Lipopolysaccharide-Induced Brain Injury in Rats. ACTA ACUST UNITED AC 2018. [DOI: 10.13005/bpj/1483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Our was to determine the impact of CoenzymeQ10 (Co Q10) and vitamin C alone or in combination on oxidative stress in brain tissue of rats during endotoxemia induced by single intraperitoneal dose of Lipopolysaccharide (LPS), 500µg/kg. Both CoQ10&vitamin C were given orally to rats with doses (200&100 mg/kg) respectively for 7successive days prior induction of endotoxemia .LPS injected, with Co Q10 with doses (100 &200 mg/kg) &vit. C (50&100 mg/kg).In addition CoQ10 and vitamin C together in doses (100&50 mg/kg) & (200&100 mg/kg) respectively were added to LPS-treated rats. Then euthanized 4 hours later. Histopathological assessment of brain tissue was done. Results: LPS injection induced oxidative stress in brain tissue, resulting in marked increase in malondiadehyde (MDA), nitrite (NO) and Amyloid beta (Aβ), while decreasing reduced glutathione (GSH), paraoxonase-1 (PON1) and brain derived neurotrophic factor (BDNF).CoQ10 and vit.C administration with doses(200&100 mg/ kg) before endotoxemia result in reduction of brain MDA, NO and Aβ, while increasing levels of GSH, PON1 and BDNF compared to controls. The addition of both Co Q10 &vit.C to LPS- treated rats lead to decrease of brain NO, MDA and Aβ, also increase of GSH, PON1 and BDNF. This effect was more obviouswith high doses, this due to the ameliorating effect of both CoQ10 and vit.C on oxidative stress of brain tissue during endotoxemia.This consisted with the histopathological results. Conclusion: this work focuses on the possible role of CoQ10 &vit.C as antioxidants in protecting brain tissue.
Collapse
Affiliation(s)
| | - Elsayed M.E. Mahdy
- Department of Chemistry , Faculty of Science, Helwan University, Helwan, Egypt
| | - Eman R. Youness
- Department of Medical Biochemistry, National Research Centre, Cairo, Egypt
| | - Nermeen Shafee
- Department of Pathology, National Research Centre, Cairo, Egypt
| | | | - Mahmoud M. Mabrouk
- Department of Medical Biochemistry, National Research Centre, Cairo, Egypt
| |
Collapse
|
17
|
Alvarado JC, Fuentes-Santamaría V, Gabaldón-Ull MC, Juiz JM. An Oral Combination of Vitamins A, C, E, and Mg ++ Improves Auditory Thresholds in Age-Related Hearing Loss. Front Neurosci 2018; 12:527. [PMID: 30108480 PMCID: PMC6079267 DOI: 10.3389/fnins.2018.00527] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/13/2018] [Indexed: 12/02/2022] Open
Abstract
The increasing rate of age-related hearing loss (ARHL), with its subsequent reduction in quality of life and increase in health care costs, requires new therapeutic strategies to reduce and delay its impact. The goal of this study was to determine if ARHL could be reduced in a rat model by administering a combination of antioxidant vitamins A, C, and E acting as free radical scavengers along with Mg++, a known powerful cochlear vasodilator (ACEMg). Toward this goal, young adult, 3 month-old Wistar rats were divided into two groups: one was fed with a diet composed of regular chow (“normal diet,” ND); the other received a diet based on chow enriched in ACEMg (“enhanced diet,” ED). The ED feeding began 10 days before the noise stimulation. Auditory brainstem recordings (ABR) were performed at 0.5, 1, 2, 4, 8, 16, and 32 kHz at 3, 6–8, and 12–14 months of age. No differences were observed at 3 months of age, in both ND and ED animals. At 6–8 and 12–14 months of age there were significant increases in auditory thresholds and a reduction in the wave amplitudes at all frequencies tested, compatible with progressive development of ARHL. However, at 6–8 months threshold shifts in ED rats were significantly lower in low and medium frequencies, and wave amplitudes were significantly larger at all frequencies when compared to ND rats. In the oldest animals, differences in the threshold shift persisted, as well as in the amplitude of the wave II, suggesting a protective effect of ACEMg on auditory function during aging. These findings indicate that oral ACEMg may provide an effective adjuvant therapeutic intervention for the treatment of ARHL, delaying the progression of hearing impairment associated with age.
Collapse
Affiliation(s)
- Juan C Alvarado
- Instituto de Investigación en Discapacidades Neurológicas, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - Verónica Fuentes-Santamaría
- Instituto de Investigación en Discapacidades Neurológicas, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - María C Gabaldón-Ull
- Instituto de Investigación en Discapacidades Neurológicas, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| | - José M Juiz
- Instituto de Investigación en Discapacidades Neurológicas, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
| |
Collapse
|
18
|
Park JH, Lee TK, Yan BC, Shin BN, Ahn JH, Kim IH, Cho JH, Lee JC, Hwang IK, Kim JD, Hong S, Lee YJ, Won MH, Kang IJ. Pretreated Glehnia littoralis Extract Prevents Neuronal Death Following Transient Global Cerebral Ischemia through Increases of Superoxide Dismutase 1 and Brain-derived Neurotrophic Factor Expressions in the Gerbil Hippocampal Cornu Ammonis 1 Area. Chin Med J (Engl) 2018; 130:1796-1803. [PMID: 28748852 PMCID: PMC5547831 DOI: 10.4103/0366-6999.211554] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Glehnia littoralis, as a traditional herbal medicine to heal various health ailments in East Asia, displays various therapeutic properties including antioxidant effects. However, neuroprotective effects of G. littoralis against cerebral ischemic insults have not yet been addressed. Therefore, in this study, we first examined its neuroprotective effects in the hippocampus using a gerbil model of transient global cerebral ischemia (TGCI). METHODS Gerbils were subjected to TGCI for 5 min. G. littoralis extract (GLE; 100 and 200 mg/kg) was administrated orally once daily for 7 days before ischemic surgery. Neuroprotection was examined by neuronal nuclear antigen immunohistochemistry and Fluoro-Jade B histofluorescence staining. Gliosis was observed by immunohistochemistry for glial fibrillary acidic protein and ionized calcium-binding adapter molecule 1. For neuroprotective mechanisms, immunohistochemistry for superoxide dismutase (SOD) 1 and brain-derived neurotrophic factor (BDNF) was done. RESULTS Pretreatment with 200 mg/kg of GLE protected pyramidal neurons in the cornu ammonis 1 (CA1) area from ischemic insult area (F = 29.770, P < 0.05) and significantly inhibited activations of astrocytes (F = 22.959, P < 0.05) and microglia (F = 44.135, P < 0.05) in the ischemic CA1 area. In addition, pretreatment with GLE significantly increased expressions of SOD1 (F = 28.561, P < 0.05) and BDNF (F = 55.298, P < 0.05) in CA1 pyramidal neurons of the sham- and ischemia-operated groups. CONCLUSIONS Our findings indicate that pretreatment with GLE can protect neurons from ischemic insults, and we suggest that its neuroprotective mechanism may be closely associated with increases of SOD1 and BDNF expressions as well as attenuation of glial activation.
Collapse
Affiliation(s)
- Joon Ha Park
- Department of Biomedical Science, Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Tae-Kyeong Lee
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Bing-Chun Yan
- Department of Traditional Chinese and Western Medicine, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, Jiangsu 225001, China
| | - Bich-Na Shin
- Department of Physiology, College of Medicine, Hallym University, Chuncheon 24252, Korea
| | - Ji Hyeon Ahn
- Department of Biomedical Science, Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - In Hye Kim
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Jeong Hwi Cho
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Jae-Chul Lee
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - In Koo Hwang
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Jong Dai Kim
- Division of Food Biotechnology, School of Biotechnology, Kangwon National University, Chuncheon, 24341, Korea
| | - Seongkweon Hong
- Department of Surgery, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Young Joo Lee
- Department of Emergency Medicine, Seoul Hospital, College of Medicine, Sooncheonhyang University, Seoul 04401, Korea
| | - Moo-Ho Won
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Il Jun Kang
- Department of Food Science and Nutrition, Hallym University, Chuncheon 24252, Korea
| |
Collapse
|
19
|
Schultz R, Krug M, Precht M, Wohl SG, Witte OW, Schmeer C. Frataxin overexpression in Müller cells protects retinal ganglion cells in a mouse model of ischemia/reperfusion injury in vivo. Sci Rep 2018; 8:4846. [PMID: 29555919 PMCID: PMC5859167 DOI: 10.1038/s41598-018-22887-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 03/02/2018] [Indexed: 01/28/2023] Open
Abstract
Müller cells are critical for retinal function and neuronal survival but can become detrimental in response to retinal ischemia and increased oxidative stress. Elevated oxidative stress increases expression of the mitochondrial enzyme frataxin in the retina, and its overexpression is neuroprotective after ischemia. Whether frataxin expression in Müller cells might improve their function and protect neurons after ischemia is unknown. The aim of this study was to evaluate the effect of frataxin overexpression in Müller cells on neuronal survival after retinal ischemia/reperfusion in the mouse in vivo. Retinal ischemia/reperfusion was induced in mice overexpressing frataxin in Müller cells by transient elevation of intraocular pressure. Retinal ganglion cells survival was determined 14 days after lesion. Expression of frataxin, antioxidant enzymes, growth factors and inflammation markers was determined with qRT-PCR, Western blotting and immunohistochemistry 24 hours after lesion. Following lesion, there was a 65% increase in the number of surviving RGCs in frataxin overexpressing mice. Improved survival was associated with increased expression of the antioxidant enzymes Gpx1 and Sod1 as well as the growth factors Cntf and Lif. Additionally, microglial activation was decreased in these mice. Therefore, support of Müller cell function constitutes a feasible approach to reduce neuronal degeneration after ischemia.
Collapse
Affiliation(s)
- Rowena Schultz
- Department of Ophthalmology, Jena University Hospital, Jena, Germany
| | - Melanie Krug
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - Michel Precht
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - Stefanie G Wohl
- Department of Biological Structure, University of Washington Seattle, Seattle, United States
| | - Otto W Witte
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany
| | - Christian Schmeer
- Hans-Berger Department of Neurology, Jena University Hospital, Jena, Germany.
| |
Collapse
|
20
|
Roh HT, So WY. The effects of aerobic exercise training on oxidant-antioxidant balance, neurotrophic factor levels, and blood-brain barrier function in obese and non-obese men. JOURNAL OF SPORT AND HEALTH SCIENCE 2017; 6:447-453. [PMID: 30356625 PMCID: PMC6189263 DOI: 10.1016/j.jshs.2016.07.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 04/02/2016] [Accepted: 04/18/2016] [Indexed: 05/24/2023]
Abstract
PURPOSE The purpose of this study was to investigate the effects of obesity and aerobic exercise training on oxidant-antioxidant balance, neurotrophic factor levels, and blood-brain barrier (BBB) function. METHODS Ten non-obese healthy men (body mass index < 25 kg/m2) and 10 obese men (body mass index ≥ 25 kg/m2) were included in the study. Both groups performed treadmill exercise for 40 min 3 times weekly for 8 weeks at 70% heart rate reserve. Blood samples were collected to examine oxidant-antioxidant balance (reactive oxygen species (ROS) and superoxide dismutase (SOD) activity levels), neurotrophic factors (brain-derived neurotrophic factor (BDNF), nerve growth factor, and glial cell line-derived neurotrophic factor levels), and BBB function (S100β and neuron-specific enolase (NSE) levels) before and after exercise training. RESULTS The obese group showed significantly greater changes than the non-obese group in serum ROS (-0.46 ± 0.31 mmol/L vs. -0.10 ± 0.17 mmol/L, p = 0.005), serum S100β levels (-8.50 ± 5.92 ng/L vs. -0.78 ± 5.45 ng/L, p = 0.007), and serum NSE levels (-0.89 ± 0.54 µg/L vs. -0.01 ± 0.74 µg/L, p = 0.007) after training. At baseline, the obese group showed significantly higher serum ROS and S100β levels and significantly lower serum SOD activity and BDNF levels than the non-obese group (p < 0.05). The obese group showed significantly lower serum ROS, S100β, and NSE levels and significantly higher serum SOD activity and BDNF levels after training compared with baseline (p < 0.05). CONCLUSION These results suggest that obesity can reduce serum neurotrophic factor levels and can induce BBB dysfunction. On the other hand, aerobic exercise can improve an oxidant-antioxidant imbalance in obese subjects and limit BBB dysfunction.
Collapse
Affiliation(s)
- Hee-Tae Roh
- Department of Physical Education, College of Arts and Physical Education, Dong-A University, Busan 604-714, Republic of Korea
| | - Wi-Young So
- Sports and Health Care Major, College of Humanities and Arts, Korea National University of Transportation, Chungju-si 380-702, Republic of Korea
| |
Collapse
|
21
|
Zhang T, Yang X, Liu T, Shao J, Fu N, Yan A, Geng K, Xia W. Adjudin-preconditioned neural stem cells enhance neuroprotection after ischemia reperfusion in mice. Stem Cell Res Ther 2017; 8:248. [PMID: 29115993 PMCID: PMC5678778 DOI: 10.1186/s13287-017-0677-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/30/2017] [Accepted: 09/21/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Transplantation of neural stem cells (NSCs) has been proposed as a promising therapeutic strategy for the treatment of ischemia/reperfusion (I/R)-induced brain injury. However, existing evidence has also challenged this therapy on its limitations, such as the difficulty for stem cells to survive after transplantation due to the unfavorable microenvironment in the ischemic brain. Herein, we have investigated whether preconditioning of NSCs with adjudin, a small molecule compound, could enhance their survivability and further improve the therapeutic effect for NSC-based stroke therapy. METHOD We aimed to examine the effect of adjudin pretreatment on NSCs by measuring a panel of parameters after their transplantation into the infarct area of ipsilateral striatum 24 hours after I/R in mice. RESULTS We found that pretreatment of NSCs with adjudin could enhance the viability of NSCs after their transplantation into the stroke-induced infarct area. Compared with the untreated NSC group, the adjudin-preconditioned group showed decreased infarct volume and neurobehavioral deficiency through ameliorating blood-brain barrier disruption and promoting the expression and secretion of brain-derived neurotrophic factor. We also employed H2O2-induced cell death model in vitro and found that adjudin preconditioning could promote NSC survival through inhibition of oxidative stress and activation of Akt signaling pathway. CONCLUSION This study showed that adjudin could be used to precondition NSCs to enhance their survivability and improve recovery in the stroke model, unveiling the value of adjudin for stem cell-based stroke therapy.
Collapse
Affiliation(s)
- Tingting Zhang
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao Yang
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Tengyuan Liu
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaxiang Shao
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Ningzhen Fu
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Aijuan Yan
- Department of Neurology & Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Room 211, Med-X Research Institute, 1954 Huashan Road, Shanghai, 200030 China
| | - Keyi Geng
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Weiliang Xia
- School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
- Department of Neurology & Institute of Neurology, Rui Jin Hospital, School of Medicine, Shanghai Jiao Tong University, Room 211, Med-X Research Institute, 1954 Huashan Road, Shanghai, 200030 China
| |
Collapse
|
22
|
Hassanzadeh P, Atyabi F, Dinarvand R. Application of modelling and nanotechnology-based approaches: The emergence of breakthroughs in theranostics of central nervous system disorders. Life Sci 2017; 182:93-103. [DOI: 10.1016/j.lfs.2017.06.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 01/28/2023]
|
23
|
Hassanzadeh P, Arbabi E, Atyabi F, Dinarvand R. Nerve growth factor-carbon nanotube complex exerts prolonged protective effects in an in vitro model of ischemic stroke. Life Sci 2017; 179:15-22. [DOI: 10.1016/j.lfs.2016.11.029] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 11/23/2016] [Accepted: 11/30/2016] [Indexed: 11/25/2022]
|
24
|
Stress-Induced Alterations of Immune Profile in Animals Suffering by Tau Protein-Driven Neurodegeneration. Cell Mol Neurobiol 2017; 38:243-259. [PMID: 28405903 DOI: 10.1007/s10571-017-0491-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 03/29/2017] [Indexed: 01/01/2023]
Abstract
Alzheimer's disease (AD) is a multifactorial disorder; neurofibrillary pathology composed of tau protein is found side by side with amyloid-β deposits and extensive neuroinflammation. The immune system of the brain is considered as one of the factors that could influence the speed of the progression of AD neuropathology as a potential mediator of the damage induced by AD protein deposits. Alzheimer's disease pathology can be impacted by psychological stress; however, signalling pathways in background are not well known. We have explored possible avenues of how stress could influence the brain's immune system in a rat model of AD. Animals were subjected either to a single or multiple instances of immobilization stress. The analysis of a panel of immunity-related genes was used to evaluate the impact of stress on the immune response in the brain. We have identified 19 stress-responsive genes that are involved in neuroinflammation accompanying tau pathology: Nos2, Ptgs2, IL-8rb, C5, Mmp9, Cx3cr1, CD40lg, Adrb2, IL-6, IL-6r, IL-1r2, Ccl2, Ccl3, Ccl4, Ccl12, TNF-α, IL-1α, IL-1β, IL-10. Most of them are deregulated under the stress conditions also in control animals; however, the magnitude of the response to either acute or chronic stress differs. This can lead to serious influence, most probably to acceleration of neurodegenerative phenotype in diseased animals. Several of the genes (IL-1β, Casp1, Cx3cr1 and C5) are deregulated solely in tauopathic animals. The stress-induced changes in the inflammatory picture of the brain highlight the fact that the brain's immune response is highly responsive to environmental stimuli. The pattern of changes is indicative of an attempt to protect the brain in the short term, while being potentially detrimental to the response against a long-term pathological process such as neurofibrillary degeneration.
Collapse
|
25
|
Boschen KE, Klintsova AY. Neurotrophins in the Brain: Interaction With Alcohol Exposure During Development. VITAMINS AND HORMONES 2016; 104:197-242. [PMID: 28215296 PMCID: PMC5997461 DOI: 10.1016/bs.vh.2016.10.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fetal alcohol spectrum disorders (FASDs) are a result of the teratogenic effects of alcohol on the developing fetus. Decades of research examining both individuals with FASDs and animal models of developmental alcohol exposure have revealed the devastating effects of alcohol on brain structure, function, behavior, and cognition. Neurotrophic factors have an important role in guiding normal brain development and cellular plasticity in the adult brain. This chapter reviews the current literature showing that alcohol exposure during the developmental period impacts neurotrophin production and proposes avenues through which alcohol exposure and neurotrophin action might interact. These areas of overlap include formation of long-term potentiation, oxidative stress processes, neuroinflammation, apoptosis and cell loss, hippocampal adult neurogenesis, dendritic morphology and spine density, vasculogenesis and angiogenesis, and behaviors related to spatial memory, anxiety, and depression. Finally, we discuss how neurotrophins have the potential to act in a compensatory manner as neuroprotective molecules that can combat the deleterious effects of in utero alcohol exposure.
Collapse
Affiliation(s)
- K E Boschen
- University of Delaware, Newark, DE, United States
| | | |
Collapse
|
26
|
DNA Damage in Major Psychiatric Diseases. Neurotox Res 2016; 30:251-67. [PMID: 27126805 DOI: 10.1007/s12640-016-9621-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/31/2016] [Accepted: 04/09/2016] [Indexed: 12/21/2022]
Abstract
Human cells are exposed to exogenous insults and continuous production of different metabolites. These insults and unwanted metabolic products might interfere with the stability of genomic DNA. Recently, many studies have demonstrated that different psychiatric disorders show substantially high levels of oxidative DNA damage in the brain accompanied with morphological and functional alterations. It reveals that damaged genomic DNA may contribute to the pathophysiology of these mental illnesses. In this article, we review the roles of oxidative damage and reduced antioxidant ability in some vastly studied psychiatric disorders and emphasize the inclusion of treatment options involving DNA repair. In addition, while most currently used antidepressants are based on the manipulation of the neurotransmitter regulation in managing different mental abnormalities, they are able to prevent or reverse neurotoxin-induced DNA damage. Therefore, it may be plausible to target on genomic DNA alterations for psychiatric therapies, which is of pivotal importance for future antipsychiatric drug development.
Collapse
|
27
|
Cho SY, Roh HT. Effects of aerobic exercise training on peripheral brain-derived neurotrophic factor and eotaxin-1 levels in obese young men. J Phys Ther Sci 2016; 28:1355-8. [PMID: 27190482 PMCID: PMC4868242 DOI: 10.1589/jpts.28.1355] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 01/16/2016] [Indexed: 12/19/2022] Open
Abstract
[Purpose] The aim of the present study was to investigate the effects of aerobic exercise
training on the levels of peripheral brain-derived neurotrophic factor and eotaxin-1 in
obese young men. [Subjects and Methods] The subjects included sixteen obese young men with
a body mass index greater than 25 kg/m2. They were randomly divided between
control and exercise groups (n = 8 in each group). The exercise group performed treadmill
exercise for 40 min, 3 times a week for 8 weeks at the intensity of 70% heart rate
reserve. Blood collection was performed to examine the levels of serum glucose, plasma
malonaldehyde, serum brain-derived neurotrophic factor, and plasma eotaxin-1 before and
after the intervention (aerobic exercise training). [Results] Following the intervention,
serum BDNF levels were significantly higher, while serum glucose, plasma MDA, and plasma
eotaxin-1 levels were significantly lower than those prior to the intervention in the
exercise group. [Conclusion] Aerobic exercise training can induce neurogenesis in obese
individuals by increasing the levels of brain-derived neurotrophic factor and reducing the
levels of eotaxin-1. Alleviation of oxidative stress is possibly responsible for such
changes.
Collapse
Affiliation(s)
- Su Youn Cho
- Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Republic of Korea
| | - Hee Tae Roh
- Department of Physical Education, College of Arts and Physical Education, Dong-A University, Republic of Korea
| |
Collapse
|
28
|
Ilgin S, Can OD, Atli O, Ucel UI, Sener E, Guven I. Ciprofloxacin-induced neurotoxicity: evaluation of possible underlying mechanisms. Toxicol Mech Methods 2015; 25:374-81. [DOI: 10.3109/15376516.2015.1026008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
29
|
Gonzalez-Liencres C, Tas C, Brown EC, Erdin S, Onur E, Cubukcoglu Z, Aydemir O, Esen-Danaci A, Brüne M. Oxidative stress in schizophrenia: a case-control study on the effects on social cognition and neurocognition. BMC Psychiatry 2014; 14:268. [PMID: 25248376 PMCID: PMC4180831 DOI: 10.1186/s12888-014-0268-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 09/11/2014] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Schizophrenia is a debilitating mental disorder that presents impairments in neurocognition and social cognition. Several studies have suggested that the etiology of schizophrenia can be partly explained by oxidative stress. However, our knowledge about the implications of oxidative stress on illness-related cognitive deficits is still far from being clear. The aim of this work was to study the role of oxidative stress molecules on social cognition and neurocognition in patients with schizophrenia. METHODS We assessed the peripheral levels of several molecules associated with oxidative stress, namely nitric oxide (NO), malondialdehyde (MDA), glutathione (GSH), homocysteine, superoxide dismutase (SOD) and neurotrophin 4/5 (NT4/5), in forty-one patients with schizophrenia and forty-three healthy participants. A battery of tests to measure neurocognition and social cognition was also administered to the schizophrenia group. RESULTS We found that the schizophrenia group presented substantially higher levels of oxidative stress than the control group, as revealed by elevated quantities of the pro-oxidants NO and MDA, and decreased levels of the antioxidants GSH, SOD and NT4/5. Interestingly, the levels of NT4/5, which have been shown to have antioxidant effects, correlated with executive functioning, as measured by two distinct tests (WCST and TMT). However, social cognition and symptom severity were not found to be associated with oxidative stress. CONCLUSIONS We propose a protective role of NT4/5 against oxidative stress, which appears to have a potentially beneficial impact on neurocognition in schizophrenia.
Collapse
Affiliation(s)
- Cristina Gonzalez-Liencres
- Division of Cognitive Neuropsychiatry and Psychiatric Preventative Medicine, LWL University Hospital, Ruhr University Bochum, Alexandrinensr. 1-3, 44791 Bochum, Germany
| | - Cumhur Tas
- Division of Cognitive Neuropsychiatry and Psychiatric Preventative Medicine, LWL University Hospital, Ruhr University Bochum, Alexandrinensr. 1-3, 44791 Bochum, Germany ,Department of Psychology, Uskudar University, İstanbul, Turkey
| | - Elliot C Brown
- Division of Cognitive Neuropsychiatry and Psychiatric Preventative Medicine, LWL University Hospital, Ruhr University Bochum, Alexandrinensr. 1-3, 44791 Bochum, Germany ,Maryland Psychiatric Research Centre, University of Maryland School of Medicine, Baltimore, MD USA
| | - Soner Erdin
- Department of Biochemistry, Celal Bayar University, Manisa, Turkey
| | - Ece Onur
- Department of Biochemistry, Celal Bayar University, Manisa, Turkey
| | | | - Omer Aydemir
- Department of Psychiatry, Celal Bayar University, Manisa, Turkey
| | | | - Martin Brüne
- Division of Cognitive Neuropsychiatry and Psychiatric Preventative Medicine, LWL University Hospital, Ruhr University Bochum, Alexandrinensr. 1-3, 44791 Bochum, Germany
| |
Collapse
|
30
|
Huang H, Zhong R, Xia Z, Song J, Feng L. Neuroprotective effects of rhynchophylline against ischemic brain injury via regulation of the Akt/mTOR and TLRs signaling pathways. Molecules 2014; 19:11196-210. [PMID: 25079660 PMCID: PMC6270871 DOI: 10.3390/molecules190811196] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/06/2014] [Accepted: 07/16/2014] [Indexed: 12/12/2022] Open
Abstract
Rhynchophylline (Rhy) is an alkaloid isolated from Uncaria which has long been recommended for the treatment of central nervous diseases. In our study, the neuroprotective effect of Rhy was investigated in a stroke model, namely permanent middle cerebral artery occlusion (pMCAO). Rats were injected intraperitoneally once daily for four consecutive days before surgery and then received one more injection after surgery. The protein and mRNA levels of p-Akt, p-mTOR, apoptosis-related proteins (p-BAD and cleaved caspase-3), TLR2/4/9, NF-κB, MyD88, BDNF and claudin-5 were examined. Following pMCAO, Rhy treatment not only ameliorated neurological deficits, infarct volume and brain edema, but also increased claudin-5 and BDNF expressions (p < 0.05). Moreover, Rhy could activate PI3K/Akt/mTOR signaling while inhibiting TLRs/NF-κB pathway. Wortmannin, a selective PI3K inhibitor, could abolish the neuroprotective effect of Rhy and reverse the increment in p-Akt, p-mTOR and p-BAD levels. In conclusion, we hypothesize that Rhy protected against ischemic damage, probably via regulating the Akt/mTOR pathway.
Collapse
Affiliation(s)
- Houcai Huang
- Animal Center, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
| | - Rongling Zhong
- Animal Center, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
| | - Zhi Xia
- Animal Center, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
| | - Jie Song
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
| | - Liang Feng
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
| |
Collapse
|
31
|
Dhobale M. Neurotrophins: Role in adverse pregnancy outcome. Int J Dev Neurosci 2014; 37:8-14. [DOI: 10.1016/j.ijdevneu.2014.06.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 06/12/2014] [Accepted: 06/12/2014] [Indexed: 01/13/2023] Open
|
32
|
D’Alessandro A, Zolla L. The SODyssey: superoxide dismutases from biochemistry, through proteomics, to oxidative stress, aging and nutraceuticals. Expert Rev Proteomics 2014; 8:405-21. [DOI: 10.1586/epr.11.13] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
33
|
|
34
|
Zhang L, Zhao H, Zhang X, Chen L, Zhao X, Bai X, Zhang J. Nobiletin protects against cerebral ischemia via activating the p-Akt, p-CREB, BDNF and Bcl-2 pathway and ameliorating BBB permeability in rat. Brain Res Bull 2013; 96:45-53. [PMID: 23644141 DOI: 10.1016/j.brainresbull.2013.04.009] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 04/24/2013] [Accepted: 04/24/2013] [Indexed: 12/18/2022]
Abstract
There is cumulative evidence that the serine-threonine kinase Akt and its downstream nuclear transcription factor CREB are involved in neuronal survival and protection. The Akt activates and phosphorylates CREB at Ser133, resulting in the up-regulation of pro-survival CREB target genes such as BDNF and Bcl-2. Thus, Akt/CREB signaling pathway may be one propitious target for treatment of ischemic cerebral injury. Nobiletin (NOB) exhibits a wide spectrum of beneficial biological properties including anti-inflammatory, antioxidant, anti-carcinogenic actions and contributes to reverse learning impairment in Alzheimer's disease rat. However, little is currently known regarding the exact role of NOB in ischemic stroke. Here, we designed to evaluate its possible therapeutic effect on cerebral ischemia. Adult male Sprague-Dawley rats were subjected to permanent middle cerebral artery occlusion (pMCAO) and randomly divided into five groups: Sham (sham-operated+0.05% Tween-80), MCAO (pMCAO+0.9% saline), Vehicle group (pMCAO+0.05% Tween-80), NOB-L (pMCAO+NOB 10 mg/kg) and NOB-H (pMCAO+NOB 25 mg/kg) groups. Rats were pre-administered intraperitoneally once daily for 3 days before surgery and then received once again immediately after surgery. Neurological deficit scores, brain water content and infarct volume were evaluated at 24 h after stroke. Additionally, the activities of Akt, CREB, BDNF, Bcl-2 and claudin-5 in ischemic brain cortex were analyzed by the methods of immunohistochemistry, western blot and RT-qPCR. Compared with Vehicle group, neurological deficits and brain edema were relieved in NOB-H group (P<0.05), infarct volume was lessened in both NOB-L and NOB-H groups (P<0.05) at 24 h after stroke. Immunohistochemistry, western blot and RT-qPCR analysis indicated that NOB dramatically promoted the activities of Akt, CREB, BDNF and Bcl-2 (P<0.05). Meanwhile, claudin-5 expression was also enhanced. On the basis of these findings, we concluded that NOB protected the brain from ischemic damage and it maybe through activating the Akt/CREB signaling pathway and ameliorating BBB permeability.
Collapse
Affiliation(s)
- Lan Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China
| | | | | | | | | | | | | |
Collapse
|
35
|
Bochner R, Ziv Y, Zeevi D, Donyo M, Abraham L, Ashery-Padan R, Ast G. Phosphatidylserine increases IKBKAP levels in a humanized knock-in IKBKAP mouse model. Hum Mol Genet 2013; 22:2785-94. [PMID: 23515154 DOI: 10.1093/hmg/ddt126] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Familial dysautonomia (FD) is a severe neurodegenerative genetic disorder restricted to the Ashkenazi Jewish population. The most common mutation in FD patients is a T-to-C transition at position 6 of intron 20 of the IKBKAP gene. This mutation causes aberrant skipping of exon 20 in a tissue-specific manner, leading to reduction of the IκB kinase complex-associated protein (IKAP) protein in the nervous system. We established a homozygous humanized mouse strain carrying human exon 20 and its two flanking introns; the 3' intron has the transition observed in the IKBKAP gene of FD patients. Although our FD humanized mouse does not display FD symptoms, the unique, tissue-specific splicing pattern of the IKBKAP in these mice allowed us to evaluate the effect of therapies on gene expression and exon 20 splicing. The FD mice were supplemented with phosphatidylserine (PS), a safe food supplement that increases mRNA and protein levels of IKBKAP in cell lines generated from FD patients. Here we demonstrated that PS treatment increases IKBAKP mRNA and IKAP protein levels in various tissues of FD mice without affecting exon 20 inclusion levels. We also observed that genes associated with transcription regulation and developmental processes were up-regulated in the cerebrum of PS-treated mice. Thus, PS holds promise for the treatment of FD.
Collapse
Affiliation(s)
- Ron Bochner
- Department of Human Molecular Genetics and Biochemistry
| | | | | | | | | | | | | |
Collapse
|
36
|
Reduced maternal and cord nerve growth factor levels in preterm deliveries. Int J Dev Neurosci 2012; 30:99-103. [PMID: 22245319 DOI: 10.1016/j.ijdevneu.2011.12.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 12/14/2011] [Accepted: 12/14/2011] [Indexed: 11/21/2022] Open
Abstract
Nerve growth factor (NGF) is a neurotrophin, which exerts an important role in the development and function of the central and peripheral nervous system. There is limited information regarding the levels of NGF during pregnancy and its role in fetal development. We have earlier reported increased oxidative stress in pregnancy complications. The present study examines the levels of NGF in maternal and cord samples in preterm deliveries and its association with oxidative stress marker. A total number of 96 women delivering preterm (<37 weeks gestation) and 94 women delivering at term (control group) (≥37 weeks gestation) were recruited. Plasma NGF levels were measured in both mother and cord plasma using the Emax Immuno Assay System Promega kit. Maternal and cord plasma NGF levels were significantly reduced (p<0.05 for both) in women delivering preterm as compared to term. There was a positive association between maternal and cord plasma NGF levels (p=0.022). Maternal NGF levels were negatively (p=0.017) associated with maternal malondialdehyde (MDA) levels. Reduced cord NGF levels may affect fetal growth in preterm deliveries which may have implications for the neurodevelopmental pathologies in later life. Circulating maternal NGF levels in preterm pregnancies may be a useful marker to predict NGF levels in the neonate.
Collapse
|
37
|
Redox proteomics and drug development. J Proteomics 2011; 74:2575-95. [DOI: 10.1016/j.jprot.2011.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 12/22/2010] [Accepted: 01/09/2011] [Indexed: 01/06/2023]
|
38
|
Manzanero S, Gelderblom M, Magnus T, Arumugam TV. Calorie restriction and stroke. EXPERIMENTAL & TRANSLATIONAL STROKE MEDICINE 2011; 3:8. [PMID: 21910904 PMCID: PMC3179731 DOI: 10.1186/2040-7378-3-8] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Accepted: 09/12/2011] [Indexed: 12/15/2022]
Abstract
Stroke, a major cause of disability and mortality in the elderly, occurs when a cerebral blood vessel is occluded or ruptured, resulting in ischemic damage and death of brain cells. The injury mechanism involves metabolic and oxidative stress, excitotoxicity, apoptosis and inflammatory processes, including activation of glial cells and infiltration of leukocytes. In animal models, dietary energy restriction, by daily calorie reduction (CR) or intermittent fasting (IF), extends lifespan and decreases the development of age-related diseases. Dietary energy restriction may also benefit neurons, as suggested by experimental evidence showing that CR and IF protect neurons against degeneration in animal models. Recent findings by our group and others suggest the possibility that dietary energy restriction may protect against stroke induced brain injury, in part by inducing the expression of neurotrophic factors, such as brain-derived neurotrophic factor (BDNF) and basic fibroblast growth factor (bFGF); protein chaperones, including heat shock protein 70 (Hsp70) and glucose regulated protein 78 (GRP78); antioxidant enzymes, such as superoxide dismutases (SOD) and heme oxygenase-1 (HO-1), silent information regulator T1 (SIRT1), uncoupling proteins and anti-inflammatory cytokines. This article discusses the protective mechanisms activated by dietary energy restriction in ischemic stroke.
Collapse
Affiliation(s)
- Silvia Manzanero
- School of Biomedical Sciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | | | | | | |
Collapse
|
39
|
Park JH, Joo HS, Yoo KY, Shin BN, Kim IH, Lee CH, Choi JH, Byun K, Lee B, Lim SS, Kim MJ, Won MH. Extract from Terminalia chebula seeds protect against experimental ischemic neuronal damage via maintaining SODs and BDNF levels. Neurochem Res 2011; 36:2043-50. [PMID: 21667226 DOI: 10.1007/s11064-011-0528-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2011] [Indexed: 01/27/2023]
Abstract
The fruit of Terminalia chebula Retz has been used as a traditional medicine in Asia and contains tannic acid, chebulagic acid, chebulinic acid and corilagin. Extract from T. chebula seeds (TCE) has various biological functions. We observed the neuroprotective effects of TCE against ischemic damage in the hippocampal C1 region (CA1) of the gerbil that had received oral administrations of TCE (100 mg/kg) once a day for 7 days before the induction of transient cerebral ischemia. In the TCE-treated ischemia group, neuronal neuclei (a marker for neurons)-positive neurons were distinctively abundant (62% of the sham group) in the CA1 4 days after ischemia-reperfusion (I-R) compared to those (12.2% of the sham group) in the vehicle-treated ischemia group. Four days after I-R TCE treatment markedly decreased the activation of astrocytes and microglia in the ischemic CA1 compared with the vehicle-treated ischemia group. In addition, immunoreactivities of Cu, Zn-superoxide dismutase (SOD1), Mn-superoxide dismutase (SOD2) and brain-derived neurotrophic factor (BDNF) in the CA1 of the TCE-treated ischemia group were much higher than those in the vehicle-ischemia group 4 days after I-R. Protein levels of SOD1, SOD2 and BDNF in the TCE-treated ischemia group were also much higher than those in the vehicle-ischemia group 4 days after I-R. These results indicate that the repeated supplement of TCE protected neurons from ischemic damage induced by transient cerebral ischemia by maintaining SODs and BDNF levels as well as decreasing glial activation.
Collapse
Affiliation(s)
- Joon Ha Park
- Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon 200-701, South Korea
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Teyssier JR, Ragot S, Chauvet-Gélinier JC, Trojak B, Bonin B. Expression of oxidative stress-response genes is not activated in the prefrontal cortex of patients with depressive disorder. Psychiatry Res 2011; 186:244-7. [PMID: 20800905 DOI: 10.1016/j.psychres.2010.07.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 07/07/2010] [Accepted: 07/23/2010] [Indexed: 11/26/2022]
Abstract
To test the hypothesis that the oxidative stress consistently detected in the peripheral blood of patients with depressive disorder impacts on the functionally relevant brain region, the expression level of nine major genes of the stress response and repair systems has been quantified in the prefrontal cortex of 24 depressive and 12 control subjects. These genes were: superoxide dismutase (SOD1), SOD2, catalase (CAT), gluthatione peroxidase 1 (GPx1), 8-oxoguanine DNA glycosylase (OGG1), nei-like 1 (NEIL1), methionine sulphoxide reductase A (MSRA), telomere repeat-binding factor 2 (TERF2) and C-FOS. Telomere length (a maker of chronic exposure to oxidative stress) has been measured in the DNA of the occipital cortex. No significant difference has been found between the compared groups. It must be concluded that the pathogenic role of the oxidative stress in the cerebral mechanism of depression cannot be inferred from the alteration of peripheral parameters.
Collapse
|
41
|
Gardiner J, Marc J. Arabidopsis thaliana, a plant model organism for the neuronal microtubule cytoskeleton? JOURNAL OF EXPERIMENTAL BOTANY 2011; 62:89-97. [PMID: 20813785 DOI: 10.1093/jxb/erq278] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The microtubule cytoskeleton is an important component of both neuronal cells and plant cells. While there are large differences in the function of microtubules between the two groups of organisms, for example plants coordinate the ordered deposition of cellulose through the microtubule cytoskeleton, there are also some notable similarities. It is suggested that Arabidopsis thaliana, with its superior availability of knockout lines, may be a suitable model organism for some aspects of the neuronal microtubule cytoskeleton. Some cellular processes that involve the neuronal microtubule cytoskeleton including neurotransmitter signalling and neurotrophic support may have homologous processes in plant cells. A number of microtubule-associated proteins (MAPs) are conserved, including katanin, EB1, CLASP, spastin, gephyrin, CRIPT, Atlastin/RHD3, and ELP3. As a demonstration of the usefulness of a plant model system for neuronal biology, an analysis of plant tubulin-binding proteins was used to show that Charcot-Marie-Tooth disease type 2D and spinal muscular atrophy may be due to microtubule dysfunction and suggest that indeed the plant microtubule cytoskeleton may be particularly similar to that of motor neurons as both are heavily reliant upon motor proteins.
Collapse
Affiliation(s)
- John Gardiner
- The School of Biological Sciences, The University of Sydney 2006, Australia.
| | | |
Collapse
|
42
|
Park KM, Bowers WJ. Tumor necrosis factor-alpha mediated signaling in neuronal homeostasis and dysfunction. Cell Signal 2010; 22:977-83. [PMID: 20096353 PMCID: PMC2860549 DOI: 10.1016/j.cellsig.2010.01.010] [Citation(s) in RCA: 203] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Accepted: 01/13/2010] [Indexed: 01/10/2023]
Abstract
Tumor necrosis factor-alpha (TNF-alpha) is a potent pro-inflammatory molecule, which upon engagement with its cognate receptors on target cells, triggers downstream signaling cascades that control a number of cellular processes related to cell viability, gene expression, ion homeostasis, and synaptic integrity. In the central nervous system (CNS), TNF-alpha is produced by brain-resident astrocytes, microglia, and neurons in response to numerous intrinsic and extrinsic stimuli. This review will summarize the key events that lead to TNF-alpha elaboration in the CNS, and the effects that these inflammatory signals impart on neuronal signaling in the context of homeostasis and neuropathology.
Collapse
Affiliation(s)
- Keigan M. Park
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, New York 14642 USA
- Center for Neural Development and Disease, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York 14642 USA
| | - William J. Bowers
- Department of Neurology, University of Rochester Medical Center, Rochester, New York 14642 USA
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, New York 14642 USA
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, New York 14642 USA
- Center for Neural Development and Disease, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York 14642 USA
| |
Collapse
|
43
|
Wright AF, Chakarova CF, Abd El-Aziz MM, Bhattacharya SS. Photoreceptor degeneration: genetic and mechanistic dissection of a complex trait. Nat Rev Genet 2010; 11:273-84. [PMID: 20212494 DOI: 10.1038/nrg2717] [Citation(s) in RCA: 445] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
44
|
Abstract
Neurodegenerative diseases are characterized by progressive dysfunction of specific populations of neurons, determining clinical presentation. Neuronal loss is associated with extra and intracellular accumulation of misfolded proteins, the hallmarks of many neurodegenerative proteinopathies. Major basic processes include abnormal protein dynamics due to deficiency of the ubiquitin-proteosome-autophagy system, oxidative stress and free radical formation, mitochondrial dysfunction, impaired bioenergetics, dysfunction of neurotrophins, 'neuroinflammatory' processes and (secondary) disruptions of neuronal Golgi apparatus and axonal transport. These interrelated mechanisms lead to programmed cell death is a long run over many years. Neurodegenerative disorders are classified according to known genetic mechanisms or to major components of protein deposits, but recent studies showed both overlap and intraindividual diversities between different phenotypes. Synergistic mechanisms between pathological proteins suggest common pathogenic mechanisms. Animal models and other studies have provided insight into the basic neurodegeneration and cell death programs, offering new ways for future prevention/treatment strategies.
Collapse
Affiliation(s)
- Kurt A Jellinger
- Institute of Clinical Neurobiology, Kenyongasse, Vienna, Austria.
| |
Collapse
|
45
|
Nowacek A, Kosloski LM, Gendelman HE. Neurodegenerative disorders and nanoformulated drug development. Nanomedicine (Lond) 2009; 4:541-55. [PMID: 19572820 DOI: 10.2217/nnm.09.37] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Degenerative and inflammatory diseases of the CNS include, but are not limited to, Alzheimer's and Parkinson's disease, amyotrophic lateral sclerosis, stroke, multiple sclerosis and HIV-1-associated neurocognitive disorders. These are common, debilitating and, unfortunately, hold few therapeutic options. In recent years, the application of nanotechnologies as commonly used or developing medicines has served to improve pharmacokinetics and drug delivery specifically to CNS-diseased areas. In addition, nanomedical advances are leading to therapies that target CNS pathobiology and as such, can interrupt disordered protein aggregation, deliver functional neuroprotective proteins and alter the oxidant state of affected neural tissues. This article focuses on the pathobiology of common neurodegenerative disorders with a view towards how nanomedicine may be used to improve the clinical course of neurodegenerative disorders.
Collapse
Affiliation(s)
- Ari Nowacek
- Department of Pharmacology & Experimental Neuroscience, Center for Neurovirology & Neurodegenerative Disorders, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | | | | |
Collapse
|
46
|
Sajdel-Sulkowska EM, Xu M, Koibuchi N. Cerebellar Brain-Derived Neurotrophic Factor, Nerve Growth Factor, and Neurotrophin-3 Expression in Male and Female Rats Is Differentially Affected by Hypergravity Exposure During Discrete Developmental Periods. THE CEREBELLUM 2009; 8:454-62. [DOI: 10.1007/s12311-009-0122-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2008] [Accepted: 06/05/2009] [Indexed: 11/28/2022]
|
47
|
Jellinger KA. Recent advances in our understanding of neurodegeneration. J Neural Transm (Vienna) 2009; 116:1111-62. [DOI: 10.1007/s00702-009-0240-y] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Accepted: 05/05/2009] [Indexed: 12/12/2022]
|