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Zeng F, Parker K, Zhan Y, Miller M, Zhu MY. Upregulated DNA Damage-Linked Biomarkers in Parkinson's Disease Model Mice. ASN Neuro 2023; 15:17590914231152099. [PMID: 36683340 PMCID: PMC9880594 DOI: 10.1177/17590914231152099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 01/24/2023] Open
Abstract
SUMMARY STATEMENT The present study examined expression of DNA damage markers in VMAT2 Lo PD model mice. The results demonstrate there is a significant increase in these DNA damage markers mostly in the brain regions of 18- and 23-month-old model mice, indicating oxidative stress-induced DNA lesion is an important pathologic feature of this mouse model.
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Affiliation(s)
- Fei Zeng
- Department of Neurology, Renmin Hospital of the Wuhan University,
Wuhan, China
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Karsten Parker
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Yanqiang Zhan
- Department of Neurology, Renmin Hospital of the Wuhan University,
Wuhan, China
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Matthew Miller
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Meng-Yang Zhu
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
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Zeng F, Fan Y, Brown RW, Drew Gill W, Price JB, Jones TC, Zhu MY. Effects of Manipulation of Noradrenergic Activities on the Expression of Dopaminergic Phenotypes in Aged Rat Brains. ASN Neuro 2021; 13:17590914211055064. [PMID: 34812056 PMCID: PMC8613899 DOI: 10.1177/17590914211055064] [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] [Indexed: 11/30/2022] Open
Abstract
This study investigated the effects of the pharmacological manipulation of noradrenergic activities on dopaminergic phenotypes in aged rats. Results showed that the administration of L-threo-3,4-dihydroxyphenylserine (L-DOPS) for 21 days significantly increased the expression of tyrosine hydroxylase (TH) and dopamine transporter (DAT) in the striatum and substantia nigra (SN) of 23-month-old rats. Furthermore, this treatment significantly increased norepinephrine/DA concentrations in the striatum and caused a deficit of sensorimotor gating as measured by prepulse inhibition (PPI). Next, old rats were injected with the α2-adrenoceptor antagonist 2-methoxy idazoxan or β2-adrenoceptor agonist salmeterol for 21 days. Both drugs produced similar changes of TH and DAT in the striatum and SN. Moreover, treatments with L-DOPS, 2-methoxy idazoxan, or salmeterol significantly increased the protein levels of phosphorylated Akt in rat striatum and SN. However, although a combination of 2-methoxy idazoxan and salmeterol resulted in a deficit of PPI in these rats, the administration of 2-methoxy idazoxan alone showed an opposite behavioral change. The in vitro experiments revealed that treatments with norepinephrine markedly increased mRNAs and proteins of ATF2 and CBP/p300 and reduced mRNA and proteins of HDAC2 and HDAC5 in MN9D cells. A ChIP assay showed that norepinephrine significantly increased CBP/p300 binding or reduced HDAC2 and HDAC5 binding on the TH promoter. The present results indicate that facilitating noradrenergic activity in the brain can improve the functions of dopaminergic neurons in aged animals. While this improvement may have biochemically therapeutic indication for the status involving the degeneration of dopaminergic neurons, it may not definitely include behavioral improvements, as indicated by using 2-methoxy idazoxan only.
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Affiliation(s)
- Fei Zeng
- Department of Neurology, Renmin Hospital of the Wuhan University, China.,Departments of Biomedical Sciences, Quillen College of Medicine, 4154East Tennessee State University, USA
| | - Yan Fan
- Departments of Biomedical Sciences, Quillen College of Medicine, 4154East Tennessee State University, USA.,Department of Biochemistry, Nantong University College of Medicine, China
| | - Russell W Brown
- Departments of Biomedical Sciences, Quillen College of Medicine, 4154East Tennessee State University, USA
| | - Wesley Drew Gill
- Departments of Biomedical Sciences, Quillen College of Medicine, 4154East Tennessee State University, USA
| | - Jennifer B Price
- Department of Biological Sciences, College of Arts and Sciences, 4154East Tennessee State University, USA
| | - Thomas C Jones
- Department of Biological Sciences, College of Arts and Sciences, 4154East Tennessee State University, USA
| | - Meng-Yang Zhu
- Departments of Biomedical Sciences, Quillen College of Medicine, 4154East Tennessee State University, USA
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Cui K, Yang F, Tufan T, Raza MU, Zhan Y, Fan Y, Zeng F, Brown RW, Price JB, Jones TC, Miller GW, Zhu MY. Restoration of Noradrenergic Function in Parkinson's Disease Model Mice. ASN Neuro 2021; 13:17590914211009730. [PMID: 33940943 PMCID: PMC8114769 DOI: 10.1177/17590914211009730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Dysfunction of the central noradrenergic and dopaminergic systems is the primary neurobiological characteristic of Parkinson’s disease (PD). Importantly, neuronal loss in the locus coeruleus (LC) that occurs in early stages of PD may accelerate progressive loss of dopaminergic neurons. Therefore, restoring the activity and function of the deficient noradrenergic system may be an important therapeutic strategy for early PD. In the present study, the lentiviral constructions of transcription factors Phox2a/2b, Hand2 and Gata3, either alone or in combination, were microinjected into the LC region of the PD model VMAT2 Lo mice at 12 and 18 month age. Biochemical analysis showed that microinjection of lentiviral expression cassettes into the LC significantly increased mRNA levels of Phox2a, and Phox2b, which were accompanied by parallel increases of mRNA and proteins of dopamine β-hydroxylase (DBH) and tyrosine hydroxylase (TH) in the LC. Furthermore, there was considerable enhancement of DBH protein levels in the frontal cortex and hippocampus, as well as enhanced TH protein levels in the striatum and substantia nigra. Moreover, these manipulations profoundly increased norepinephrine and dopamine concentrations in the striatum, which was followed by a remarkable improvement of the spatial memory and locomotor behavior. These results reveal that over-expression of these transcription factors in the LC improves noradrenergic and dopaminergic activities and functions in this rodent model of PD. It provides the necessary groundwork for the development of gene therapies of PD, and expands our understanding of the link between the LC-norepinephrine and dopamine systems during the progression of PD.
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Affiliation(s)
- Kui Cui
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States
| | - Fan Yang
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States.,Hong Kong Institute, Asia Metropolitan University, Hong Kong, China
| | - Turan Tufan
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States
| | - Muhammad U Raza
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States
| | - Yanqiang Zhan
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States.,Department of Neurology, Renmin Hospital of the Wuhan University, Wuhan, China
| | - Yan Fan
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States.,Department of Biochemistry, Nantong University College of Medicine, Nantong, China
| | - Fei Zeng
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States.,Department of Neurology, Renmin Hospital of the Wuhan University, Wuhan, China
| | - Russell W Brown
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States
| | - Jennifer B Price
- Department of Biological Sciences, College of Arts and Sciences; East Tennessee State University, Johnson City, United States
| | - Thomas C Jones
- Department of Biological Sciences, College of Arts and Sciences; East Tennessee State University, Johnson City, United States
| | - Gary W Miller
- Department of Environmental Health Sciences, Mailmen School of Public Health, Columbia University, New York, New York, United States
| | - Meng-Yang Zhu
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, United States
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Perez Garcia G, Perez GM, De Gasperi R, Gama Sosa MA, Otero-Pagan A, Pryor D, Abutarboush R, Kawoos U, Hof PR, Cook DG, Gandy S, Ahlers ST, Elder GA. Progressive Cognitive and Post-Traumatic Stress Disorder-Related Behavioral Traits in Rats Exposed to Repetitive Low-Level Blast. J Neurotrauma 2021; 38:2030-2045. [PMID: 33115338 DOI: 10.1089/neu.2020.7398] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Many military veterans who experienced blast-related traumatic brain injuries (TBI) in the conflicts in Iraq and Afghanistan currently have chronic cognitive and mental health problems including post-traumatic stress disorder (PTSD). Besides static symptoms, new symptoms may emerge or existing symptoms may worsen. TBI is also a risk factor for later development of neurodegenerative diseases. In rats exposed to repetitive low-level blast overpressure (BOP), robust and enduring cognitive and PTSD-related behavioral traits develop that are present for at least one year after blast exposure. Here we determined the time-course of the appearance of these traits by testing rats in the immediate post-blast period. Three cohorts of rats examined within the first eight weeks exhibited no behavioral phenotype or, in one cohort, features of anxiety. None showed the altered cued fear responses or impaired novel object recognition characteristic of the fully developed phenotype. Two cohorts retested 36 to 42 weeks after blast exposure exhibited the expanded behavioral phenotype including anxiety as well as altered cued fear learning and impaired novel object recognition. Combined with previous work, the chronic behavioral phenotype has been observed in six cohorts of blast-exposed rats studied at 3-4 months or longer after blast injury, and the three cohorts studied here document the progressive nature of the cognitive/behavioral phenotype. These studies suggest the existence of a latent, delayed emerging and progressive blast-induced cognitive and behavioral phenotype. The delayed onset has implications for the evolution of post-blast neurobehavioral syndromes in military veterans and its modeling in experimental animals.
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Affiliation(s)
- Georgina Perez Garcia
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA.,Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Gissel M Perez
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA
| | - Rita De Gasperi
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Miguel A Gama Sosa
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,General Medical Research Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA
| | - Alena Otero-Pagan
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA
| | - Dylan Pryor
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA
| | - Rania Abutarboush
- Department of Neurotrauma, Naval Medical Research Center, Silver Spring, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, USA
| | - Usmah Kawoos
- Department of Neurotrauma, Naval Medical Research Center, Silver Spring, Maryland, USA.,The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, USA
| | - Patrick R Hof
- Department of Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Geriatrics and Palliative Care, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Mount Sinai Alzheimer's Disease Research Center and Ronald M. Loeb Center for Alzheimer's Disease, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - David G Cook
- Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, Washington, USA.,Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Sam Gandy
- Research and Development Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA.,Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Barbara and Maurice A. Deane Center for Wellness and Cognitive Health, and the Mount Sinai NFL Neurological Care Center, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Stephen T Ahlers
- Department of Neurotrauma, Naval Medical Research Center, Silver Spring, Maryland, USA
| | - Gregory A Elder
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Mount Sinai Alzheimer's Disease Research Center and Ronald M. Loeb Center for Alzheimer's Disease, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Neurology Service, James J. Peters Department of Veterans Affairs Medical Center, Bronx, New York, USA
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Di Lascio S, Benfante R, Cardani S, Fornasari D. Research Advances on Therapeutic Approaches to Congenital Central Hypoventilation Syndrome (CCHS). Front Neurosci 2021; 14:615666. [PMID: 33510615 PMCID: PMC7835644 DOI: 10.3389/fnins.2020.615666] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/17/2020] [Indexed: 12/11/2022] Open
Abstract
Congenital central hypoventilation syndrome (CCHS) is a genetic disorder of neurodevelopment, with an autosomal dominant transmission, caused by heterozygous mutations in the PHOX2B gene. CCHS is a rare disorder characterized by hypoventilation due to the failure of autonomic control of breathing. Until now no curative treatment has been found. PHOX2B is a transcription factor that plays a crucial role in the development (and maintenance) of the autonomic nervous system, and in particular the neuronal structures involved in respiratory reflexes. The underlying pathogenetic mechanism is still unclear, although studies in vivo and in CCHS patients indicate that some neuronal structures may be damaged. Moreover, in vitro experimental data suggest that transcriptional dysregulation and protein misfolding may be key pathogenic mechanisms. This review summarizes latest researches that improved the comprehension of the molecular pathogenetic mechanisms responsible for CCHS and discusses the search for therapeutic intervention in light of the current knowledge about PHOX2B function.
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Affiliation(s)
- Simona Di Lascio
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Università degli Studi di Milano, Milan, Italy
| | - Roberta Benfante
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Università degli Studi di Milano, Milan, Italy.,CNR-Institute of Neuroscience, Milan, Italy.,NeuroMi-Milan Center for Neuroscience, University of Milano Bicocca, Milan, Italy
| | - Silvia Cardani
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Università degli Studi di Milano, Milan, Italy
| | - Diego Fornasari
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Università degli Studi di Milano, Milan, Italy.,CNR-Institute of Neuroscience, Milan, Italy
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