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Zhang M, Chen C, Peng Q, Wu X, Zhou R, Ma Y, Zou Z. A novel gene therapy for methamphetamine- induced cognitive disorder with a hyper-acidified fusion variant of DnaJB1. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 31:703-716. [PMID: 36923951 PMCID: PMC10009643 DOI: 10.1016/j.omtn.2023.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 02/13/2023] [Indexed: 02/18/2023]
Abstract
Methamphetamine (MA) is spread worldwide and is a highly addictive psychostimulant that can induce neurodegeneration and cognitive disorder, which lacks effective treatments. We and other researchers have found that the crucial member of Hsp70 chaperone machinery, DnaJ, is liable to be co-aggregated with aberrant proteins, which has been confirmed a risk factor to promote neurodegeneration. In the current study, we demonstrated that tailing with a hyper-acidic fusion partner, tua2, human DnaJB1 could resist the formation of toxic mutant Tau aggregates both in prokaryote and eukaryote models. We found that aberrant Tau aggregates could deplete the antioxidant enzyme pool and disturb Hsp70 molecular chaperone system by co-aggregating with the principal members of these systems. Stability-enhanced DnaJB1-tua2 could stop the chain reaction of Tau aggregates as well as maintain redox balance and protein homeostasis. With an MA-induced cognitive disorder mouse model, we found that the cognitive disorder of MA mice was rescued and the overactivated inflammatory response was relieved by the expression of DnaJB1-tua2 in the hippocampus. Furthermore, the Tau neurofibrillary tangles and apoptotic neurons were diminished with the escorting of DnaJB1-tua2. These findings demonstrate that delivering DnaJB1-tua2 in hippocampus may have a therapeutic potential in the treatment of MA-induced cognitive disorder.
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Affiliation(s)
- Mengru Zhang
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Cheng Chen
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Qingyan Peng
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Xiaocong Wu
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Ruiyi Zhou
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Yuru Ma
- First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, China
| | - Zhurong Zou
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, School of Life Sciences, Kunming, Yunnan 650500, China
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2
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Brain-derived neurotrophic factor protects serotonergic neurons against 3,4-methylenedioxymethamphetamine ("Ecstasy") induced cytoskeletal damage. J Neural Transm (Vienna) 2022; 129:703-711. [PMID: 35420371 PMCID: PMC9188522 DOI: 10.1007/s00702-022-02502-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/06/2022] [Indexed: 10/24/2022]
Abstract
3,4-Methylenedioxymethamphetamine (MDMA, "Ecstasy") use has been linked to persistent alterations of the brain serotonergic (5-HT) system in animal and human studies, but the molecular underpinnings are still unclear. Cytoskeletal structures such as neurofilament light chain (NfL) are promising markers of drug-induced brain toxicity and may be involved in MDMA neurotoxicity. The brain-derived neurotrophic factor (BDNF) promotes the growth and sprouting of 5-HT neurons and its differential response to MDMA administration was suggested to mediate dose- and region-dependent 5-HT damage by MDMA. However, the role of BDNF pre-treatment in preventing MDMA neurotoxicity and the potential effects of MDMA on NfL are still elusive. Therefore, a differentiated 5-HT neuronal cell line obtained from rat raphe nucleus (RN46A) was treated in vitro with either MDMA, BDNF, MDMA + BDNF, or vehicle. Cell viability (measured by MTT) and intracellular NfL levels (immunocytochemistry assay) were reduced by MDMA, but partially rescued by BDNF co-treatment. Our findings confirmed that BDNF levels can influence MDMA-induced 5-HT damage, and support BDNF to be a crucial target for neuroprotective interventions of the 5-HT system. We also provide evidence on the sensitivity of NfL to MDMA neurotoxicity, with potential implications for in-vivo monitoring of drug-induced neurotoxicity.
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Sharma A, Sane H, Paranjape A, Varghese R, Nair V, Biju H, Sawant D, Gokulchandran N, Badhe P. Improved survival in amyotrophic lateral sclerosis patients following autologous bone marrow mononuclear cell therapy: a long term 10-year retrospective study. JOURNAL OF NEURORESTORATOLOGY 2021. [DOI: 10.26599/jnr.2021.9040010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background: Promising results from previous studies using cell therapy have paved the way for an innovative treatment option for amyotrophic lateral sclerosis (ALS). There is considerable evidence of immune and inflammatory abnormalities in ALS. Bone marrow mononuclear cells (BMMNCs) possess immunomodulatory properties and could contribute to slowing of disease progression. Objective: Aim of our study was to evaluate the long-term effect of autologous BMMNCs combined with standard treatment on survival duration in a large population and to evaluate effect of type of onset and hormonal status on survival duration in the intervention group. Methods: This controlled, retrospective study spanned over 10 years, 5 months; included 216 patients with probable or definite ALS, 150 in intervention group receiving autologous BMMNCs and standard treatment, and 66 in control group receiving only standard treatment. The estimated survival duration of control group and intervention group was computed and compared using Kaplan Meier analysis. Survival duration of patients with different types of onset and hormonal status was compared within the intervention group. Results: None of the patients reported any major adverse events related to cell administration or the procedure. Kaplan Meier analysis estimated survival duration in the intervention group to be 91.7 months while 49.7 months in the control group (p = 0.008). Within the intervention group, estimated survival was significantly higher (p = 0.013) in patients with limb onset (102.3 months) vs. bulbar onset (49.9 months); premenopausal women (93.1 months) vs. postmenopausal women (57.6 months) (p = 0.002); and preandropausal men (153.7 months) vs. postandropausal males (56.5 months) (p = 0.006). Conclusion: Cell therapy using autologous BMMNCs along with standard treatment offers a promising and safe option for ALS with the potential of long term beneficial effect and increased survival. Limb onset patients, premenopausal women and men ≤ 40 years of age demonstrated better treatment efficacy.
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Shukla M, Vincent B. The multi-faceted impact of methamphetamine on Alzheimer's disease: From a triggering role to a possible therapeutic use. Ageing Res Rev 2020; 60:101062. [PMID: 32304732 DOI: 10.1016/j.arr.2020.101062] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/05/2020] [Accepted: 03/28/2020] [Indexed: 12/15/2022]
Abstract
Although it has been initially synthesized for therapeutic purposes and currently FDA-approved and prescribed for obesity, attention-deficit/hyperactivity disorder, narcolepsy and depression, methamphetamine became a recreational drug that is nowadays massively manufactured illegally. Because it is a powerful and extremely addictive psychotropic agent, its abuse has turned out to become a major health problem worldwide. Importantly, the numerous effects triggered by this drug induce neurotoxicity in the brain ultimately leading to serious neurological impairments, tissue damage and neuropsychological disturbances that are reminiscent to most of the symptoms observed in Alzheimer's disease and other pathological manifestations in aging brain. In this context, there is a growing number of compelling evidence linking methamphetamine abuse with a higher probability of developing premature Alzheimer's disease and consequent neurodegeneration. This review proposes to establish a broad assessment of the effects that this drug can generate at the cellular and molecular levels in connection with the development of the age-related Alzheimer's disease. Altogether, the objective is to warn against the long-term effects that methamphetamine abuse may convey on young consumers and the increased risk of developing this devastating brain disorder at later stages of their lives, but also to discuss a more recently emerging concept suggesting a possible use of methamphetamine for treating this pathology under proper and strictly controlled conditions.
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5
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Aguilar MA, García-Pardo MP, Parrott AC. Of mice and men on MDMA: A translational comparison of the neuropsychobiological effects of 3,4-methylenedioxymethamphetamine ('Ecstasy'). Brain Res 2020; 1727:146556. [PMID: 31734398 DOI: 10.1016/j.brainres.2019.146556] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 11/09/2019] [Accepted: 11/12/2019] [Indexed: 11/19/2022]
Abstract
MDMA (3,4-methylendioxymethamphetamine), also known as Ecstasy, is a stimulant drug recreationally used by young adults usually in dance clubs and raves. Acute MDMA administration increases serotonin, dopamine and noradrenaline by reversing the action of the monoamine transporters. In this work, we review the studies carried out over the last 30 years on the neuropsychobiological effects of MDMA in humans and mice and summarise the current knowledge. The two species differ with respect to the neurochemical consequences of chronic MDMA, since it preferentially induces serotonergic dysfunction in humans and dopaminergic neurotoxicity in mice. However, MDMA alters brain structure and function and induces hormonal, psychomotor, neurocognitive, psychosocial and psychiatric outcomes in both species, as well as physically damaging and teratogen effects. Pharmacological and genetic studies in mice have increased our knowledge of the neurochemical substrate of the multiple effects of MDMA. Future work in this area may contribute to developing pharmacological treatments for MDMA-related disorders.
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Affiliation(s)
- Maria A Aguilar
- Department of Psychobiology, Faculty of Psychology, Valencia University, Valencia, Spain.
| | | | - Andrew C Parrott
- Department of Psychology, Swansea University, Swansea, United Kingdom; Centre for Human Psychopharmacology, Swinburne University, Melbourne, Australia
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6
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Pantoni MM, Anagnostaras SG. Cognitive Effects of MDMA in Laboratory Animals: A Systematic Review Focusing on Dose. Pharmacol Rev 2019; 71:413-449. [PMID: 31249067 DOI: 10.1124/pr.118.017087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
±3,4-Methylenedioxymethamphetamine (MDMA) is a synthetic, psychoactive drug that is primarily used recreationally but also may have some therapeutic value. At low doses, MDMA produces feelings of relaxation, empathy, emotional closeness, and euphoria. Higher doses can produce unpleasant psychostimulant- and hallucinogen-like adverse effects and therefore are usually not taken intentionally. There is considerable evidence that MDMA produces neurotoxicity and cognitive deficits at high doses; however, these findings may not generalize to typical recreational or therapeutic use of low-dose MDMA. Here, we systematically review 25 years of research on the cognitive effects of MDMA in animals, with a critical focus on dose. We found no evidence that doses of less than 3 mg/kg MDMA-the dose range that users typically take-produce cognitive deficits in animals. Doses of 3 mg/kg or greater, which were administered most often and frequently ranged from 5 to 20 times greater than an average dose, also did not produce cognitive deficits in a slight majority of experiments. Overall, the preclinical evidence of MDMA-induced cognitive deficits is weak and, if anything, may be the result of unrealistically high dosing. While factors associated with recreational use such as polydrug use, adulterants, hyperthermia, and hyponatremia can increase the potential for neurotoxicity, the short-term, infrequent, therapeutic use of ultra low-dose MDMA is unlikely to pose significant cognitive risks. Future studies must examine any adverse cognitive effects of MDMA using clinically relevant doses to reliably assess its potential as a psychotherapeutic.
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Affiliation(s)
- Madeline M Pantoni
- Molecular Cognition Laboratory, Department of Psychology (M.M.P., S.G.A.) and Program in Neurosciences (S.G.A.), University of California San Diego, La Jolla, California
| | - Stephan G Anagnostaras
- Molecular Cognition Laboratory, Department of Psychology (M.M.P., S.G.A.) and Program in Neurosciences (S.G.A.), University of California San Diego, La Jolla, California
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7
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Thellung S, Corsaro A, Nizzari M, Barbieri F, Florio T. Autophagy Activator Drugs: A New Opportunity in Neuroprotection from Misfolded Protein Toxicity. Int J Mol Sci 2019; 20:ijms20040901. [PMID: 30791416 PMCID: PMC6412775 DOI: 10.3390/ijms20040901] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 02/06/2023] Open
Abstract
The aim of this review is to critically analyze promises and limitations of pharmacological inducers of autophagy against protein misfolding-associated neurodegeneration. Effective therapies against neurodegenerative disorders can be developed by regulating the “self-defense” equipment of neurons, such as autophagy. Through the degradation and recycling of the intracellular content, autophagy promotes neuron survival in conditions of trophic factor deprivation, oxidative stress, mitochondrial and lysosomal damage, or accumulation of misfolded proteins. Autophagy involves the activation of self-digestive pathways, which is different for dynamics (macro, micro and chaperone-mediated autophagy), or degraded material (mitophagy, lysophagy, aggrephagy). All neurodegenerative disorders share common pathogenic mechanisms, including the impairment of autophagic flux, which causes the inability to remove the neurotoxic oligomers of misfolded proteins. Pharmacological activation of autophagy is typically achieved by blocking the kinase activity of mammalian target of rapamycin (mTOR) enzymatic complex 1 (mTORC1), removing its autophagy suppressor activity observed under physiological conditions; acting in this way, rapamycin provided the first proof of principle that pharmacological autophagy enhancement can induce neuroprotection through the facilitation of oligomers’ clearance. The demand for effective disease-modifying strategies against neurodegenerative disorders is currently stimulating the development of a wide number of novel molecules, as well as the re-evaluation of old drugs for their pro-autophagic potential.
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Affiliation(s)
- Stefano Thellung
- Sezione di Farmacologia, Dipartimento di Medicina Interna & Centro di Eccellenza per la Ricerca Biomedica (CEBR), Università di Genova, 16132 Genova, Italy.
| | - Alessandro Corsaro
- Sezione di Farmacologia, Dipartimento di Medicina Interna & Centro di Eccellenza per la Ricerca Biomedica (CEBR), Università di Genova, 16132 Genova, Italy.
| | - Mario Nizzari
- Sezione di Farmacologia, Dipartimento di Medicina Interna & Centro di Eccellenza per la Ricerca Biomedica (CEBR), Università di Genova, 16132 Genova, Italy.
| | - Federica Barbieri
- Sezione di Farmacologia, Dipartimento di Medicina Interna & Centro di Eccellenza per la Ricerca Biomedica (CEBR), Università di Genova, 16132 Genova, Italy.
| | - Tullio Florio
- Sezione di Farmacologia, Dipartimento di Medicina Interna & Centro di Eccellenza per la Ricerca Biomedica (CEBR), Università di Genova, 16132 Genova, Italy.
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy.
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8
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Methamphetamine regulates βAPP processing in human neuroblastoma cells. Neurosci Lett 2019; 701:20-25. [PMID: 30771376 DOI: 10.1016/j.neulet.2019.02.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 02/05/2019] [Accepted: 02/12/2019] [Indexed: 12/20/2022]
Abstract
Methamphetamine is a potent and highly addictive psychostimulant whose abuse has turned out to be a global health hazard. The multitudinous effects it exerts at the cellular level induces neurotoxic responses in the human brain, ultimately leading to neurocognitive disorders. Strikingly, brain changes, tissue damage and neuropsychological symptoms due to Meth exposure compels and necessitates to link the probability of risk of developing premature Alzheimer's disease, a progressive neurodegenerative disorder characterized by amyloid plaques composed of amyloid-β peptides and clinical dementia. These peptides are derived from sequential cleavages of the β-amyloid precursor protein by β- and γ-secretases. Previous studies reveals evidence for both positive and negative effects of Meth pertaining to cognitive functioning based on the dosage paradigm and duration of exposure revealing a beneficial psychotropic profile under some conditions and deleterious cognitive deficits under some others. In this context, we proposed to examine the effect of Meth on βAPP metabolism and βAPP-cleaving secretases in the human neuroblastoma SH-SY5Y cell line. Our results showed that Meth dose-dependently increases BACE1 expression and catalytic activity, while its effect on the α-cleavage of βAPP and on the expression and catalytic activity of the main α-secretase ADAM10 display a bell-curve shape. To our knowledge, the present study is the first to demonstrate that Meth can control βAPP-cleaving secretases. Moreover, we propose from these findings that the deleterious effect of Meth on cognitive decline might be an outcome of high dosage paradigm whereas acute and short-term drug use which stimulated sAPPα might produce improvements in cognition in disorders such as AD.
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9
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Feio-Azevedo R, Costa VM, Barbosa DJ, Teixeira-Gomes A, Pita I, Gomes S, Pereira FC, Duarte-Araújo M, Duarte JA, Marques F, Fernandes E, Bastos ML, Carvalho F, Capela JP. Aged rats are more vulnerable than adolescents to “ecstasy”-induced toxicity. Arch Toxicol 2018; 92:2275-2295. [DOI: 10.1007/s00204-018-2226-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/17/2018] [Indexed: 11/29/2022]
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10
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Pronin AV, Gogoleva IV, Torshin IY, Gromovа OA. [Neurotrophic effects of lithium stimulate the reduction of ischemic and neurodegenerative brain damage]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 116:99-108. [PMID: 27166488 DOI: 10.17116/jnevro20161162199-108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
For over 60 years, high doses of lithium (hundreds of milligrams of elemental lithium) have being used to treat bipolar disorder. However, only during the past 20 years the relevant basic and clinical studies have shown that neuroprotective and neurotrophic effects of lithium are possible in much smaller doses ( hundreds of micrograms of elemental lithium). These data indicate a significant potential for the clinical applications of lithium-based drugs in modern neurology for the purposes of prevention and treatment of neurodegenerative and ischemic pathologies. Pharmacological and molecular biology studies indicated that the inhibition of glycogen synthase kinase-syntentase-3 (GSK-3) and induction of brain-derived neurotrophic factors are the main mechanisms of neurotropic actions of lithium. Also, by inhibiting the NMDA receptors, lithium regulates the calcium homeostasis and inhibits the activation of calcium-dependent apotosis. These and other molecular mechanisms of lithium action protect neurons from ischemia and neurodegeneration thus contributing to a significant reduction of neurological deficit in various models of stroke and neurodegenerative diseases.
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Affiliation(s)
- A V Pronin
- Ivanovo State Medical Academy, Ivanovo, Russian Satellite Center, Trace Elements Institute for UNESCO, Moscow
| | - I V Gogoleva
- Ivanovo State Medical Academy, Ivanovo, Russian Satellite Center, Trace Elements Institute for UNESCO, Moscow
| | - I Yu Torshin
- Ivanovo State Medical Academy, Ivanovo, Russian Satellite Center, Trace Elements Institute for UNESCO, Moscow
| | - O A Gromovа
- Ivanovo State Medical Academy, Ivanovo, Russian Satellite Center, Trace Elements Institute for UNESCO, Moscow
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Cho YE, Lee MH, Song BJ. Neuronal Cell Death and Degeneration through Increased Nitroxidative Stress and Tau Phosphorylation in HIV-1 Transgenic Rats. PLoS One 2017; 12:e0169945. [PMID: 28107387 PMCID: PMC5249108 DOI: 10.1371/journal.pone.0169945] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 12/27/2016] [Indexed: 12/16/2022] Open
Abstract
The underlying mechanisms for increased neurodegeneration and neurocognitive deficits in HIV-infected people are unclear. Therefore, this study was aimed to investigate the mechanisms of increased neurodegeneration in 5-month old male HIV-1 Transgenic (Tg) rats compared to the age- and gender-matched wild-type (WT) by evaluating histological changes and biochemical parameters of the key proteins involved in the cell death signaling and apoptosis. Histological and immunohistochemical analyses revealed decreased neuronal cells with elevated astrogliosis in HIV-1 Tg rats compared to WT. Mechanistic studies revealed that increased levels of nitroxidative stress marker proteins such as NADPH-oxidase, cytochrome P450-2E1 (CYP2E1), inducible nitric oxide synthase (iNOS), the stress-activated mitogen-activated protein kinases such as JNK and p38K, activated cell-cycle dependent CDK5, hypoxia-inducible protein-1α, nitrated proteins, hyperphosphorylated tau, and amyloid plaques in HIV-Tg rats were consistently observed in HIV-1 Tg rats. Confocal microscopy and cell viability analyses showed that treatment with an antioxidant N-acetylcysteine or a specific inhibitor of iNOS 1400W significantly prevented the increased apoptosis of neuro-2A cells by HIV-1 Tat or gp120 protein, demonstrating the causal role of HIV-1 mediated nitroxidative stress and protein nitration in promoting neuronal cell death. Immunoprecipitation and immunoblot analysis confirmed nitration of Hsp90, evaluated as an example of nitrated proteins, suggesting possible involvement of nitrated proteins in neuronal damage. Further, activated p-JNK directly binds tau and phosphorylates multiple amino acids, suggesting an important role of p-JNK in tau hyperphosphorylation and tauopathy. These changes were accompanied with elevated levels of many apoptosis-related proteins Bax and cleaved (activated) caspase-3 as well as proinflammatory cytokines including TNF-α, IL-6 and MCP-1. Collectively, these results indicate that raised nitroxidative stress accompanied by elevated inflammation, cell death signaling pathway including activated p-JNK, C-terminal C99 amyloid fragment formation and tau hyperphosphorylation are responsible for increased apoptosis of neuronal cells and neurodegeneration in 5-month old HIV-Tg rats.
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Affiliation(s)
- Young-Eun Cho
- Section of Molecular Pharmacology and Toxicology, Laboratory of Membrane Biochemistry and Biophysics, National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland, United States of America
| | - Myoung-Hwa Lee
- Office of the Clinical Director, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland, United States of America
| | - Byoung-Joon Song
- Section of Molecular Pharmacology and Toxicology, Laboratory of Membrane Biochemistry and Biophysics, National Institute on Alcohol Abuse and Alcoholism, Bethesda, Maryland, United States of America
- * E-mail:
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12
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Ebrahimian Z, Karimi Z, Khoshnoud MJ, Namavar MR, Daraei B, Haidari MR. Behavioral and Stereological Analysis of the Effects of Intermittent Feeding Diet on the Orally Administrated MDMA ("ecstasy") in Mice. INNOVATIONS IN CLINICAL NEUROSCIENCE 2017; 14:40-52. [PMID: 28386520 PMCID: PMC5373794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Background: 3,4-methylenedioxy-methamphetamine or MDMA (also known as "ecstasy" or "molly") is a commonly abused drug that affects behavior and can lead to neuronal damage. Intermittent feeding is an effective dietary protocol that promotes neuroprotection and improves behavioral outcomes in animal models of neurotoxicity and neurodegenerative diseases. In this study, we investigated the behavioral and histological outcomes of the effect of intermittent feeding on the orally administered MDMA in mice. Methods: The animals (male albino mice) were divided into four groups: ad libitum (AL), intermittent feeding (IF) (food given every other day), and AL and IF control groups. After five weeks, AL and IF groups were given a single oral dose of 20 or 60mg/kg MDMA. Behavior was assessed with the elevated plus-maze and the open field tests. Each of the treatment groups were then divided in to two groups: AL-AL (AL diet throughout), AL-IF (IF after MDMA administration), IF-IF (IF diet throughout), IF-AL (AL after MDMA administration). The second behavioral assessment was performed on ninth and 12th day after MDMA administration. The brains were then prepared with cresyl fast violet stain for stereology of the CA1 area of hippocampus. Results: The AL groups showed enhanced locomotion and anxiety compared to the IF (p<0.001); however, IF groups showed significantly (p<0.05) more locomotor activity and less anxiety recovery at ninth and 12th days compared to the AL animals. The neuronal numerical density was significantly (p<0.05) higher in the hippocampus in the AL-IF groups compared to the AL-AL. Conclusion: IF regimen can significantly modify various behavioral characteristics induced by MDMA and promotes faster recovery from MDMA's anxiogenic effects. Additionally, IF regimen had neuroprotective effects on the neurons of the CA1 area of the hippocampus after a single oral dose of MDMA. We believe the results of our study support the need for further research examining the behavior modifying and neuroprotective potential of the IF regminen for the treatment of drug addiction in humans.
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Affiliation(s)
- Zeinab Ebrahimian
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
| | - Zeinab Karimi
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
| | - Mohammad Javad Khoshnoud
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
| | - Mohammad Reza Namavar
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
| | - Bahram Daraei
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
| | - Mohsen Raza Haidari
- Drs. Ebrahimian and Khoshnoud are with the Department of Pharmacology and Toxicology, Faculty of Pharmacy, Shiraz University of Medical Sciences in Shiraz, IR Iran; Drs. Karimi and Daraei are with the Department of Toxicology, Faculty of Medical Sciences, Tarbiat Modares University in Tehran, IR Iran; Dr. Namavar is with the Section of Histomorphometry and Stereology, Department of Anatomical Sciences, School of Medicine, Shiraz University of Medical Sciences in Shiraz, IR Iran; and Dr. Haidari is with the Section of Neurosciences, Department of Neurology, Faculty of Medicine, Baqiyatallah University of Medical Sciences in Tehran, IR Iran
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13
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Abstract
Wnt signaling has emerged in recent years as a major player in both nervous system development and adult synaptic plasticity. Of particular relevance to researchers studying learning and memory, Wnt signaling is critical for normal functioning of the hippocampus, a brain region that is essential for many types of memory formation and whose dysfunction is implicated in numerous neurodegenerative and psychiatric conditions. Impaired hippocampal Wnt signaling is implicated in several of these conditions, however, little is known about how Wnt signaling mediates hippocampal memory formation. This review will provide a general overview of Wnt signaling and discuss evidence demonstrating a key role for Wnt signaling in hippocampal memory formation in both normal and disease states. The regulation of Wnt signaling by ovarian sex steroid hormones will also be highlighted, given that the neuroprotection afforded by Wnt-hormone interactions may have significant implications for cognitive function in aging, neurodegenerative disease, and ischemic injury.
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Affiliation(s)
- Ashley M Fortress
- Department of Psychology, University of Wisconsin-Milwaukee, WI, USA
| | - Karyn M Frick
- Department of Psychology, University of Wisconsin-Milwaukee, WI, USA
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14
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Adaptive Plasticity in the Hippocampus of Young Mice Intermittently Exposed to MDMA Could Be the Origin of Memory Deficits. Mol Neurobiol 2015; 53:7271-7283. [DOI: 10.1007/s12035-015-9618-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
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15
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Busceti CL, Pietro PD, Riozzi B, Traficante A, Biagioni F, Nisticò R, Fornai F, Battaglia G, Nicoletti F, Bruno V. 5-HT2C serotonin receptor blockade prevents tau protein hyperphosphorylation and corrects the defect in hippocampal synaptic plasticity caused by a combination of environmental stressors in mice. Pharmacol Res 2015; 99:258-68. [DOI: 10.1016/j.phrs.2015.06.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 06/26/2015] [Accepted: 06/28/2015] [Indexed: 10/23/2022]
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16
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Barbosa DJ, Capela JP, Feio-Azevedo R, Teixeira-Gomes A, Bastos MDL, Carvalho F. Mitochondria: key players in the neurotoxic effects of amphetamines. Arch Toxicol 2015; 89:1695-725. [PMID: 25743372 DOI: 10.1007/s00204-015-1478-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 02/09/2015] [Indexed: 12/21/2022]
Abstract
Amphetamines are a class of psychotropic drugs with high abuse potential, as a result of their stimulant, euphoric, emphathogenic, entactogenic, and hallucinogenic properties. Although most amphetamines are synthetic drugs, of which methamphetamine, amphetamine, and 3,4-methylenedioxymethamphetamine ("ecstasy") represent well-recognized examples, the use of natural related compounds, namely cathinone and ephedrine, has been part of the history of humankind for thousands of years. Resulting from their amphiphilic nature, these drugs can easily cross the blood-brain barrier and elicit their well-known psychotropic effects. In the field of amphetamines' research, there is a general consensus that mitochondrial-dependent pathways can provide a major understanding concerning pathological processes underlying the neurotoxicity of these drugs. These events include alterations on tricarboxylic acid cycle's enzymes functioning, inhibition of mitochondrial electron transport chain's complexes, perturbations of mitochondrial clearance mechanisms, interference with mitochondrial dynamics, as well as oxidative modifications in mitochondrial macromolecules. Additionally, other studies indicate that amphetamines-induced neuronal toxicity is closely regulated by B cell lymphoma 2 superfamily of proteins with consequent activation of caspase-mediated downstream cell death pathway. Understanding the molecular mechanisms at mitochondrial level involved in amphetamines' neurotoxicity can help in defining target pathways or molecules mediating these effects, as well as in developing putative therapeutic approaches to prevent or treat the acute- or long-lasting neuropsychiatric complications seen in human abusers.
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Affiliation(s)
- Daniel José Barbosa
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal. .,Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua do Campo Alegre 823, 4150-180, Porto, Portugal.
| | - João Paulo Capela
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.,FP-ENAS (Unidade de Investigação UFP em energia, Ambiente e Saúde), CEBIMED (Centro de Estudos em Biomedicina), Faculdade de Ciências da Saúde, Universidade Fernando Pessoa, Rua 9 de Abril 349, 4249-004, Porto, Portugal
| | - Rita Feio-Azevedo
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Armanda Teixeira-Gomes
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Maria de Lourdes Bastos
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Félix Carvalho
- UCIBIO/REQUIMTE (Rede de Química e Tecnologia), Laboratório de Toxicologia, Departamento de Ciências Biológicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.
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17
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Bele MS, Gajare KA, Deshmukh AA. Caloric restriction mimetic 2-deoxyglucose maintains cytoarchitecture and reduces tau phosphorylation in primary culture of mouse hippocampal pyramidal neurons. In Vitro Cell Dev Biol Anim 2015; 51:546-55. [PMID: 25678460 DOI: 10.1007/s11626-015-9867-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 01/01/2015] [Indexed: 12/26/2022]
Abstract
Typical form of neurons is crucially important for their functions. This is maintained by microtubules and associated proteins like tau. Hyperphosphorylation of tau is a major concern in neurodegenerative diseases. Glycogen synthase kinase3β (GSK3β) and cyclin-dependent protein kinase 5 (Cdk5) are the enzymes that govern tau phosphorylation. Currently, efforts are being made to target GSK3β and Cdk5 as possible therapeutic avenues to control tau phosphorylation and treat neurodegenerative diseases related to taupathies. In a number of studies, caloric restriction mimetic 2-deoxyglucose (C6H12O5) was found to be beneficial in improving the brain functions. However, no reports are available on the effect of 2-deoxyglucose 2-DG on tau phosphorylation. In the present study, hippocampal pyramidal neurons from E17 mouse embryos were isolated and cultured on poly-L-lysine-coated coverslips. Neurons from the experimental group were treated with 10 mM 2-deoxyglucose. The treatment of 2-DG resulted in healthier neuronal morphology in terms of significantly lower number of cytoplasmic vacuoles, little or no membrane blebbings, maintained axon hillock and intact neurites. There were decreased immunofluorescence signals for GSK3β, pTau at Ser262, Cdk5 and pTau at Ser235 suggesting decreased tau phosphorylation, which was further confirmed by Western blotting. The results indicate the beneficial effects of 2-DG in controlling the tau phosphorylation and maintaining the healthy neuronal cytoarchitecture.
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Affiliation(s)
- M S Bele
- Cellular stress response laboratory, Cell Biology Division, Department of Zoology, Shivaji University, Kolhapur, India
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18
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MDMA administration during adolescence exacerbates MPTP-induced cognitive impairment and neuroinflammation in the hippocampus and prefrontal cortex. Psychopharmacology (Berl) 2014; 231:4007-18. [PMID: 24687411 DOI: 10.1007/s00213-014-3536-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 03/07/2014] [Indexed: 12/13/2022]
Abstract
RATIONALE We have recently shown that chronic exposure to 3,4-methylenedioxymethamphetamine (MDMA, "ecstasy") of adolescent mice exacerbates dopamine neurotoxicity and neuroinflammatory effects elicited by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in the substantia nigra and striatum at adulthood. OBJECTIVES The present study investigated whether the amplification of MPTP effects by previous treatment with MDMA extends to the limbic and cortical regions and consequently affects cognitive performance. METHODS Mice received MDMA (10 mg/kg, twice a day/twice a week) for 9 weeks, followed by MPTP (20 mg/kg × 4 administrations), starting 2 weeks after MDMA discontinuation. Complement type 3 receptor (CD11b) and glial fibrillary acidic protein (GFAP) were evaluated by immunohistochemistry in both the hippocampus and the medial prefrontal cortex (mPFC) to measure microglia and astroglia activation. These neurochemical evaluations were paired with an assessment of cognitive performance by means of the novel object recognition (NOR) and spontaneous alternation tasks. RESULTS MPTP administration to MDMA-pretreated mice elicited a stronger activation of CD11b and GFAP in both the hippocampus and the mPFC compared with either substance administered alone. Furthermore, NOR performance was lower in MDMA-pretreated mice administered MPTP compared with mice that received either substance alone. CONCLUSIONS These results demonstrate that MDMA-MPTP negative interactions extend to the limbic and cortical regions and may result in cognitive impairment, providing further evidence that exposure to MDMA may amplify the effects of later neurotoxic insults.
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Forlenza OV, De-Paula VJR, Diniz BSO. Neuroprotective effects of lithium: implications for the treatment of Alzheimer's disease and related neurodegenerative disorders. ACS Chem Neurosci 2014; 5:443-50. [PMID: 24766396 DOI: 10.1021/cn5000309] [Citation(s) in RCA: 194] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Lithium is a well-established therapeutic option for the acute and long-term management of bipolar disorder and major depression. More recently, based on findings from translational research, lithium has also been regarded as a neuroprotective agent and a candidate drug for disease-modification in certain neurodegenerative disorders, namely, Alzheimer's disease (AD), amyotrophic lateral sclerosis (ALS), and, more recently, Parkinson's disease (PD). The putative neuroprotective effects of lithium rely on the fact that it modulates several homeostatic mechanisms involved in neurotrophic response, autophagy, oxidative stress, inflammation, and mitochondrial function. Such a wide range of intracellular responses may be secondary to two key effects, that is, the inhibition of glycogen synthase kinase-3 beta (GSK-3β) and inositol monophosphatase (IMP) by lithium. In the present review, we revisit the neurobiological properties of lithium in light of the available evidence of its neurotrophic and neuroprotective properties, and discuss the rationale for its use in the treatment and prevention of neurodegenerative diseases.
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Affiliation(s)
- O. V. Forlenza
- Laboratory
of Neuroscience (LIM-27), Department and Institute of Psychiatry,
Faculty of Medicine, University of Sao Paulo, SP, Brazil
| | - V. J. R. De-Paula
- Laboratory
of Neuroscience (LIM-27), Department and Institute of Psychiatry,
Faculty of Medicine, University of Sao Paulo, SP, Brazil
| | - B. S. O. Diniz
- Department
of Mental Health and National Institute of Science and Technology,
Molecular Medicine, Faculty of Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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20
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Barbosa DJ, Serrat R, Mirra S, Quevedo M, de Barreda EG, Àvila J, Ferreira LM, Branco PS, Fernandes E, Lourdes Bastos MD, Capela JP, Soriano E, Carvalho F. The mixture of "ecstasy" and its metabolites impairs mitochondrial fusion/fission equilibrium and trafficking in hippocampal neurons, at in vivo relevant concentrations. Toxicol Sci 2014; 139:407-20. [PMID: 24595818 DOI: 10.1093/toxsci/kfu042] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
3,4-Methylenedioxymethamphetamine (MDMA; "ecstasy") is a potentially neurotoxic recreational drug of abuse. Though the mechanisms involved are still not completely understood, formation of reactive metabolites and mitochondrial dysfunction contribute to MDMA-related neurotoxicity. Neuronal mitochondrial trafficking, and their targeting to synapses, is essential for proper neuronal function and survival, rendering neurons particularly vulnerable to mitochondrial dysfunction. Indeed, MDMA-associated disruption of Ca(2+) homeostasis and ATP depletion have been described in neurons, thus suggesting possible MDMA interference on mitochondrial dynamics. In this study, we performed real-time functional experiments of mitochondrial trafficking to explore the role of in situ mitochondrial dysfunction in MDMA's neurotoxic actions. We show that the mixture of MDMA and six of its major in vivo metabolites, each compound at 10μM, impaired mitochondrial trafficking and increased the fragmentation of axonal mitochondria in cultured hippocampal neurons. Furthermore, the overexpression of mitofusin 2 (Mfn2) or dynamin-related protein 1 (Drp1) K38A constructs almost completely rescued the trafficking deficits caused by this mixture. Finally, in hippocampal neurons overexpressing a Mfn2 mutant, Mfn2 R94Q, with impaired fusion and transport properties, it was confirmed that a dysregulation of mitochondrial fission/fusion events greatly contributed to the reported trafficking phenotype. In conclusion, our study demonstrated, for the first time, that the mixture of MDMA and its metabolites, at concentrations relevant to the in vivo scenario, impaired mitochondrial trafficking and increased mitochondrial fragmentation in hippocampal neurons, thus providing a new insight in the context of "ecstasy"-induced neuronal injury.
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Affiliation(s)
- Daniel José Barbosa
- REQUIMTE (Rede de Química e Tecnologia), Toxicology Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
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21
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MDMA impairs mitochondrial neuronal trafficking in a Tau- and Mitofusin2/Drp1-dependent manner. Arch Toxicol 2014; 88:1561-72. [PMID: 24522274 DOI: 10.1007/s00204-014-1209-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/29/2014] [Indexed: 01/11/2023]
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22
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The JNK inhibitor, SP600125, potentiates the glial response and cell death induced by methamphetamine in the mouse striatum. Int J Neuropsychopharmacol 2014; 17:235-46. [PMID: 24103647 DOI: 10.1017/s1461145713000850] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This study investigates the effect of the selective Jun NH2-terminal kinase 1/2 (JNK1/2) inhibitor, (SP600125) on the striatal dopamine nerve terminal loss and on the increased interleukin-15 (IL-15) expression and glial response induced by methamphetamine (METH). Mice were given repeated low doses of METH (4 mg/kg, i.p., three times separated by 3 h) and killed 24 h or 7 d after the last dose. SP600125 (30 mg/kg, i.p) was administered 30 min before the last METH injection. Results indicate that METH produced dopaminergic axonal neurotoxicity reflected as a marked decrease in the striatal density of tyrosine hydroxylase-immunoreactive (TH-ir) fibres and dopamine transporter-immunoreactivity (DAT-ir) 24 h after dosing. These effects were not modified by SP600125. This compound also failed to prevent the long-term loss of dopamine levels and DAT observed 7 d following METH injection. Nevertheless, SP600125 potentiated METH-induced striatal cell loss reflected by an increase in Fluoro-Jade immunostaining, cleaved capase-3 immunoreactivity and the number of terminal deoxyncleotidyl transferase-mediated dUTP nick end labelling (TUNEL) positive cells. In line with a deleterious effect of JNK1/2 inhibition, SP600125 increased the astroglial and microglial response induced by METH and interfered with drug-induced IL-15 expression. Together these data indicate that, not only does SP600125 fail to protect against the dopaminergic damage induced by METH but also, in fact, it potentiates the glial response and the non-dopaminergic striatal cell loss caused by the drug.
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23
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Barbosa DJ, Serrat R, Ferreira LM, Branco PS, Bastos MDL, Capela JP, Soriano E, Carvalho F. Neuronal Mitochondrial Trafficking Impairment: The Cause or a Consequence of Neuronal Dysfunction Caused by Amphetamine-Like Drugs. ACTA ACUST UNITED AC 2014. [DOI: 10.4303/jdar/235868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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24
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Leboucher A, Laurent C, Fernandez-Gomez FJ, Burnouf S, Troquier L, Eddarkaoui S, Demeyer D, Caillierez R, Zommer N, Vallez E, Bantubungi K, Breton C, Pigny P, Buée-Scherrer V, Staels B, Hamdane M, Tailleux A, Buée L, Blum D. Detrimental effects of diet-induced obesity on τ pathology are independent of insulin resistance in τ transgenic mice. Diabetes 2013; 62:1681-8. [PMID: 23250356 PMCID: PMC3636620 DOI: 10.2337/db12-0866] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The τ pathology found in Alzheimer disease (AD) is crucial in cognitive decline. Midlife development of obesity, a major risk factor of insulin resistance and type 2 diabetes, increases the risk of dementia and AD later in life. The impact of obesity on AD risk has been suggested to be related to central insulin resistance, secondary to peripheral insulin resistance. The effects of diet-induced obesity (DIO) on τ pathology remain unknown. In this study, we evaluated effects of a high-fat diet, given at an early pathological stage, in the THY-Tau22 transgenic mouse model of progressive AD-like τ pathology. We found that early and progressive obesity potentiated spatial learning deficits as well as hippocampal τ pathology at a later stage. Surprisingly, THY-Tau22 mice did not exhibit peripheral insulin resistance. Further, pathological worsening occurred while hippocampal insulin signaling was upregulated. Together, our data demonstrate that DIO worsens τ phosphorylation and learning abilities in τ transgenic mice independently from peripheral/central insulin resistance.
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Affiliation(s)
- Antoine Leboucher
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Cyril Laurent
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Francisco-José Fernandez-Gomez
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Sylvie Burnouf
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Laetitia Troquier
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Sabiha Eddarkaoui
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Dominique Demeyer
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Raphaëlle Caillierez
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Nadège Zommer
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Emmanuelle Vallez
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U1011, Lille, France
- Institut Pasteur de Lille, Lille, France
| | - Kadiombo Bantubungi
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U1011, Lille, France
- Institut Pasteur de Lille, Lille, France
| | - Christophe Breton
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- EA 4489, Environnement Perinatal et Croissance, Lille, France
| | - Pascal Pigny
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
- Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - Valérie Buée-Scherrer
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Bart Staels
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U1011, Lille, France
- Institut Pasteur de Lille, Lille, France
| | - Malika Hamdane
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
| | - Anne Tailleux
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U1011, Lille, France
- Institut Pasteur de Lille, Lille, France
| | - Luc Buée
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
- Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - David Blum
- Université Lille-Nord de France, Université du Droit et de la Santé de Lille, Lille, France
- INSERM U837, Jean-Pierre Aubert Research Centre, Institut de Médecine Prédictive et de Recherche Thérapeutique, Lille, France
- Centre Hospitalier Régional Universitaire de Lille, Lille, France
- Corresponding author: David Blum,
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Ros-Simó C, Moscoso-Castro M, Ruiz-Medina J, Ros J, Valverde O. Memory impairment and hippocampus specific protein oxidation induced by ethanol intake and 3, 4-Methylenedioxymethamphetamine (MDMA) in mice. J Neurochem 2013; 125:736-46. [DOI: 10.1111/jnc.12247] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 02/20/2013] [Accepted: 03/21/2013] [Indexed: 01/01/2023]
Affiliation(s)
- Clara Ros-Simó
- Grup de Recerca en Neurobiologia del Comportament (GReNeC), Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra; Parc de Recerca Biomèdica de Barcelona; Barcelona Spain
| | - Maria Moscoso-Castro
- Grup de Recerca en Neurobiologia del Comportament (GReNeC), Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra; Parc de Recerca Biomèdica de Barcelona; Barcelona Spain
| | - Jéssica Ruiz-Medina
- Grup de Recerca en Neurobiologia del Comportament (GReNeC), Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra; Parc de Recerca Biomèdica de Barcelona; Barcelona Spain
| | - Joaquim Ros
- Departament de Ciències Mèdiques Bàsiques; IRBLLEIDA; Universitat de Lleida; Lleida Spain
| | - Olga Valverde
- Grup de Recerca en Neurobiologia del Comportament (GReNeC), Departament de Ciències Experimentals i de la Salut; Universitat Pompeu Fabra; Parc de Recerca Biomèdica de Barcelona; Barcelona Spain
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26
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Jahanshahi M, Haidari K, Mahaki-Zadeh S, Nikmahzar E, Babakordi F. Effects of Repeated Administration of 3,4-methylenedioxymethamphetamine (MDMA) on Avoidance Memory and Cell Density in Rats' Hippocampus. Basic Clin Neurosci 2013; 4:57-63. [PMID: 25337329 PMCID: PMC4202557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 12/18/2012] [Accepted: 01/15/2013] [Indexed: 11/11/2022] Open
Abstract
INTRODUCTION MDMA or ecstasy is a derivative of amphetamines used mostly by young people worldwide. Although the acute effects of this drug are known, the effect of chronic administration is not well studied. Therefor the aim of this study was to determine the effects of repeated (long term) administration of MDMA on rats' memory and their hippocampal cell density. METHOD Young adult male Wistar rats 200 ± 20 g served as subjects. The rats were randomly distributed into three MDMA treated groups (3×2.5 mg/kg, 3×5 mg/kg, 3×10 mg/kg) and one control-saline group. All animals received MDMA intraperitoneally (3h apart; a challenge) 7th day of every week for consecutive 4 weeks. Animals were trained before and were tested after injections for their memory status using the standards passive avoidance method. Finally, 24hr after the memory test, rats were sacrificed and after tissue operations, the hippocampal astrocytes and neurons were counted. RESULTS Results showed that the number of neurons in all experimental groups was lower than the control-saline group. The most decreased number of neurons was shown in 5 mg/kg MDMA group compared to control-saline in all the regions of hippocampus. Also we found that repeated administration of MDMA reduced the number of hippocampal astrocytes. DISCUSSION It is concluded that repeated administration of MDMA can reduce density of neurons and astrocytes and this decrease is not dose dependence.
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Affiliation(s)
- Mehrdad Jahanshahi
- Neuroscience Research Center, Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran,Corresponding Author: Mehrdad Jahanshahi, PhD, Neuroscience Research Center, Department of Anatomy, Faculty of Medicine, Golestan University of Medical Sciences, km 4 Gorgan-Sari road (Shastcola), Gorgan, Iran. Tel: 0098-171-4420515 / Fax: 0098-171-4420515. E-mail:
| | - Kamran Haidari
- Neuroscience Research Center, Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran
| | - Simin Mahaki-Zadeh
- Neuroscience Research Center, Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran
| | - EmseGol Nikmahzar
- Neuroscience Research Center, Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran
| | - Fatemeh Babakordi
- Neuroscience Research Center, Department of Anatomy, Golestan University of Medical Sciences, Gorgan, Iran
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Serata D, Kotzalidis GD, Riozzi B, Storto M, Panaccione I, Romano S, Rapinesi C, Porfiri GM, Casolla B, Del Casale A, Curto M, Caloro M, Girardi N, Savoja V, Nicoletti F, Tatarelli R, Girardi P. Increased serum Dickkopf-1 levels in drug-abusing psychotic patients. Prog Neuropsychopharmacol Biol Psychiatry 2012; 36:239-44. [PMID: 22122879 DOI: 10.1016/j.pnpbp.2011.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/14/2011] [Accepted: 11/14/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Dickkopf-1 (DKK1) is an inhibitor of the canonical Wnt pathway, which is known to be impaired in both psychotic and neurodegenerative disorders. Here, we examined serum DKK1 levels as an indicator of ongoing neurodegeneration in psychotic patients, with or without a recent or current history of drug abuse. METHODS We measured serum DKK1 levels by ELISA in 22 inpatients with psychosis and no history of drug abuse, 22 with psychosis and drug abuse, and 16 controls. We rated psychopathology using the following rating scales: the Positive and Negative Syndrome Scale (PANSS); the Clinical Global Impressions (CGI) severity scale; and the Global Assessment of Functioning (GAF) scale. Extrapyramidal motor symptoms were assessed by the Simpson-Angus Neurological Rating Scale (NRS). RESULTS Inpatients with psychosis and comorbid substance abuse showed significantly higher serum DKK1 levels than inpatients with psychosis and no comorbid substance abuse or controls. Comorbid patients had earlier onset, longer duration of psychosis, and more severe extrapyramidal motor symptoms. However, we did not find any significant correlation between DKK1 levels and rating scale scores. CONCLUSION Psychosis led to elevated serum DKK1 levels, and substance abuse led to a further increase. Knowing that there is a correlation between brain and blood levels of DKK1, we speculate that the observed increase in DKK1 levels reflects drug-induced neurotoxicity in our patients.
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Affiliation(s)
- Daniele Serata
- NESMOS Department (Neurosciences, Mental Health and Sensory Organs), School of Medicine and Psychology, Sapienza University-Rome, Sant'Andrea Hospital, Rome, Italy.
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Nykänen NP, Kysenius K, Sakha P, Tammela P, Huttunen HJ. γ-Aminobutyric acid type A (GABAA) receptor activation modulates tau phosphorylation. J Biol Chem 2012; 287:6743-52. [PMID: 22235112 DOI: 10.1074/jbc.m111.309385] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Abnormal phosphorylation and aggregation of the microtubule-associated protein Tau are hallmarks of various neurodegenerative diseases, such as Alzheimer disease. Molecular mechanisms that regulate Tau phosphorylation are complex and currently incompletely understood. We have developed a novel live cell reporter system based on protein-fragment complementation assay to study dynamic changes in Tau phosphorylation status. In this assay, fusion proteins of Tau and Pin1 (peptidyl-prolyl cis-trans-isomerase 1) carrying complementary fragments of a luciferase protein serve as a sensor of altered protein-protein interaction between Tau and Pin1, a critical regulator of Tau dephosphorylation at several disease-associated proline-directed phosphorylation sites. Using this system, we identified several structurally distinct GABA(A) receptor modulators as novel regulators of Tau phosphorylation in a chemical library screen. GABA(A) receptor activation promoted specific phosphorylation of Tau at the AT8 epitope (Ser-199/Ser-202/Thr-205) in cultures of mature cortical neurons. Increased Tau phosphorylation by GABA(A) receptor activity was associated with reduced Tau binding to protein phosphatase 2A and was dependent on Cdk5 but not GSK3β kinase activity.
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Affiliation(s)
- Niko-Petteri Nykänen
- Neuroscience Center, Faculty of Pharmacy, University of Helsinki, Helsinki FIN-00014, Finland
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Granado N, Ares-Santos S, Oliva I, O´Shea E, Martin ED, Colado MI, Moratalla R. Dopamine D2-receptor knockout mice are protected against dopaminergic neurotoxicity induced by methamphetamine or MDMA. Neurobiol Dis 2011; 42:391-403. [DOI: 10.1016/j.nbd.2011.01.033] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 01/28/2011] [Indexed: 11/25/2022] Open
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Steinkellner T, Freissmuth M, Sitte HH, Montgomery T. The ugly side of amphetamines: short- and long-term toxicity of 3,4-methylenedioxymethamphetamine (MDMA, 'Ecstasy'), methamphetamine and D-amphetamine. Biol Chem 2011; 392:103-15. [PMID: 21194370 DOI: 10.1515/bc.2011.016] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Amphetamine ('Speed'), methamphetamine ('Ice') and its congener 3,4-methylenedioxymethamphetamine (MDMA; 'Ecstasy') are illicit drugs abused worldwide for their euphoric and stimulant effects. Despite compelling evidence for chronic MDMA neurotoxicity in animal models, the physiological consequences of such toxicity in humans remain unclear. In addition, distinct differences in the metabolism and pharmacokinetics of MDMA between species and different strains of animals prevent the rationalisation of realistic human dose paradigms in animal studies. Here, we attempt to review amphetamine toxicity and in particular MDMA toxicity in the pathogenesis of exemplary human pathologies, independently of confounding environmental factors such as poly-drug use and drug purity.
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Affiliation(s)
- Thomas Steinkellner
- Centre for Physiology and Pharmacology, Institute of Pharmacology, Medical University of Vienna, Währingerstrasse 13a, A-1090 Vienna, Austria
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Matrisciano F, Busceti CL, Bucci D, Orlando R, Caruso A, Molinaro G, Cappuccio I, Riozzi B, Gradini R, Motolese M, Caraci F, Copani A, Scaccianoce S, Melchiorri D, Bruno V, Battaglia G, Nicoletti F. Induction of the Wnt antagonist Dickkopf-1 is involved in stress-induced hippocampal damage. PLoS One 2011; 6:e16447. [PMID: 21304589 PMCID: PMC3029367 DOI: 10.1371/journal.pone.0016447] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Accepted: 12/29/2010] [Indexed: 11/19/2022] Open
Abstract
The identification of mechanisms that mediate stress-induced hippocampal damage may shed new light into the pathophysiology of depressive disorders and provide new targets for therapeutic intervention. We focused on the secreted glycoprotein Dickkopf-1 (Dkk-1), an inhibitor of the canonical Wnt pathway, involved in neurodegeneration. Mice exposed to mild restraint stress showed increased hippocampal levels of Dkk-1 and reduced expression of β-catenin, an intracellular protein positively regulated by the canonical Wnt signalling pathway. In adrenalectomized mice, Dkk-1 was induced by corticosterone injection, but not by exposure to stress. Corticosterone also induced Dkk-1 in mouse organotypic hippocampal cultures and primary cultures of hippocampal neurons and, at least in the latter model, the action of corticosterone was reversed by the type-2 glucocorticoid receptor antagonist mifepristone. To examine whether induction of Dkk-1 was causally related to stress-induced hippocampal damage, we used doubleridge mice, which are characterized by a defective induction of Dkk-1. As compared to control mice, doubleridge mice showed a paradoxical increase in basal hippocampal Dkk-1 levels, but no Dkk-1 induction in response to stress. In contrast, stress reduced Dkk-1 levels in doubleridge mice. In control mice, chronic stress induced a reduction in hippocampal volume associated with neuronal loss and dendritic atrophy in the CA1 region, and a reduced neurogenesis in the dentate gyrus. Doubleridge mice were resistant to the detrimental effect of chronic stress and, instead, responded to stress with increases in dendritic arborisation and neurogenesis. Thus, the outcome of chronic stress was tightly related to changes in Dkk-1 expression in the hippocampus. These data indicate that induction of Dkk-1 is causally related to stress-induced hippocampal damage and provide the first evidence that Dkk-1 expression is regulated by corticosteroids in the central nervous system. Drugs that rescue the canonical Wnt pathway may attenuate hippocampal damage in major depression and other stress-related disorders.
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Affiliation(s)
| | | | - Domenico Bucci
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | - Rosamaria Orlando
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
| | - Alessandra Caruso
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
| | - Gemma Molinaro
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | | | - Barbara Riozzi
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | - Roberto Gradini
- Department of Experimental Medicine, University “Sapienza”, Roma, Italy
| | - Marta Motolese
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | - Filippo Caraci
- Department of Pharmaceutical Sciences, University of Catania, Catania, Italy
| | - Agata Copani
- Department of Pharmaceutical Sciences, University of Catania, Catania, Italy
| | - Sergio Scaccianoce
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
| | - Daniela Melchiorri
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
- Istituto San Raffaele Pisana, Roma, Italy
| | - Valeria Bruno
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | | | - Ferdinando Nicoletti
- Department of Physiology and Pharmacology, University “Sapienza”, Roma, Italy
- Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
- * E-mail:
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Anthony IC, Norrby KE, Dingwall T, Carnie FW, Millar T, Arango JC, Robertson R, Bell JE. Predisposition to accelerated Alzheimer-related changes in the brains of human immunodeficiency virus negative opiate abusers. Brain 2010; 133:3685-98. [DOI: 10.1093/brain/awq263] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Krapacher FA, Mlewski EC, Ferreras S, Pisano V, Paolorossi M, Hansen C, Paglini G. Mice lacking p35 display hyperactivity and paradoxical response to psychostimulants. J Neurochem 2010; 114:203-14. [PMID: 20403084 DOI: 10.1111/j.1471-4159.2010.06748.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cyclin-dependent kinase 5/p35 kinase complex plays a critical role in dopaminergic neurotransmission. Dysregulation of dopamine (DA) signaling is associated with neurological and neuropsychiatric disorders. As cyclin-dependent kinase 5 (Cdk5) requires association with p35 for its proper activation, we hypothesized that dysregulation of Cdk5 activity might have an effect on striatal-mediated behavior. We used a mutant mouse, deficient in p35 protein (p35 KO), which displayed reduced Cdk5 activity. Throughout behavioral and biochemical characterization of naïve and psychostimulant-treated mice, we demonstrated that only juvenile p35 KO mice displayed spontaneous hyperactivity, responded with a paradoxical hypolocomotor effect to psychostimulant drugs and exhibited deficit on proper behavioral inhibition. Strong immunolabeling for tyrosine-hydroxylase and high striatal DA synthesis and contents with a low DA turnover, which were reverted by psychostimulants, were also found in mutant mice. Our results demonstrate that p35 deficiency is critically involved in the expression of a hyperactive behavioral phenotype with hyper-functioning of the dopaminergic system, emphasizing the importance of proper Cdk5 kinase activity for normal motor and emotional features. Thus, p35 KO mice may be another useful animal model for understanding cellular and molecular events underlying attention deficit hyperactivity disorder-like disorders.
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Affiliation(s)
- Favio Ariel Krapacher
- Laboratory of Neurobiology and Cell Biology, Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC-CONICET), 5016 Córdoba, Argentina
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Learning and memory deficits in ecstasy users and their neural correlates during a face-learning task. Brain Res 2009; 1292:71-81. [DOI: 10.1016/j.brainres.2009.07.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 07/02/2009] [Accepted: 07/15/2009] [Indexed: 11/24/2022]
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Pasquali L, Longone P, Isidoro C, Ruggieri S, Paparelli A, Fornai F. Autophagy, lithium, and amyotrophic lateral sclerosis. Muscle Nerve 2009; 40:173-94. [DOI: 10.1002/mus.21423] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Capela JP, Carmo H, Remião F, Bastos ML, Meisel A, Carvalho F. Molecular and Cellular Mechanisms of Ecstasy-Induced Neurotoxicity: An Overview. Mol Neurobiol 2009; 39:210-71. [DOI: 10.1007/s12035-009-8064-1] [Citation(s) in RCA: 210] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 02/27/2009] [Indexed: 11/29/2022]
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Tarditi A, Caricasole A, Terstappen G. Therapeutic targets for Alzheimer's disease. Expert Opin Ther Targets 2009; 13:551-67. [DOI: 10.1517/14728220902865614] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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