1
|
Wilson L, Lee CA, Mason CF, Khodjaniyazova S, Flores KB, Muddiman DC, Sombers LA. Simultaneous Measurement of Striatal Dopamine and Hydrogen Peroxide Transients Associated with L-DOPA Induced Rotation in Hemiparkinsonian Rats. ACS MEASUREMENT SCIENCE AU 2022; 2:120-131. [PMID: 36785724 PMCID: PMC9838821 DOI: 10.1021/acsmeasuresciau.1c00030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder commonly treated with levodopa (L-DOPA), which eventually induces abnormal involuntary movements (AIMs). The neurochemical contributors to these dyskinesias are unknown; however, several lines of evidence indicate an interplay of dopamine (DA) and oxidative stress. Here, DA and hydrogen peroxide (H2O2) were simultaneously monitored at discrete recording sites in the dorsal striata of hemiparkinsonian rats using fast-scan cyclic voltammetry. Mass spectrometry imaging validated the lesions. Hemiparkinsonian rats exhibited classic L-DOPA-induced AIMs and rotations as well as increased DA and H2O2 tone over saline controls after 1 week of treatment. By week 3, DA tone remained elevated beyond that of controls, but H2O2 tone was largely normalized. At this time point, rapid chemical transients were time-locked with spontaneous bouts of rotation. Striatal H2O2 rapidly increased with the initiation of contraversive rotational behaviors in lesioned L-DOPA animals, in both hemispheres. DA signals simultaneously decreased with rotation onset. The results support a role for these striatal neuromodulators in the adaptive changes that occur with L-DOPA treatment in PD and reveal a precise interplay between DA and H2O2 in the initiation of involuntary locomotion.
Collapse
Affiliation(s)
- Leslie
R. Wilson
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Christie A. Lee
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Catherine F. Mason
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Sitora Khodjaniyazova
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Kevin B. Flores
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - David C. Muddiman
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| | - Leslie A. Sombers
- Department
of Chemistry, Department of Mathematics, Molecular Education, Technology,
and Research Innovation Center (METRIC), Center for Research in Scientific
Computation, and Comparative Medicine Institute, North Carolina
State University, Raleigh, North Carolina 27695, United States
| |
Collapse
|
2
|
Scorza FA, Guimarães-Marques M, Nejm M, de Almeida ACG, Scorza CA, Fiorini AC, Finsterer J. Sudden unexpected death in Parkinson's disease: Insights from clinical practice. Clinics (Sao Paulo) 2022; 77:100001. [PMID: 35152167 PMCID: PMC8900653 DOI: 10.1016/j.clinsp.2021.100001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/04/2021] [Indexed: 01/21/2023] Open
Abstract
Classified as the second most common neurodegenerative disorder associated with aging after Alzheimer's disease, Parkinson's disease (PD) is the most common movement disorder. In the last decade, despite advances in treatment, mortality rates linked with PD continued to reach significant figures. Available studies have shown that compared with healthy controls, patients with PD are accompanied by high rates of premature death. This is usually caused by factors such as pneumonia and cerebrovascular and cardiovascular diseases. Recently, it has been demonstrated that a significant proportion of patients with PD die suddenly. This is referred to as a sudden and unexpected death in PD (SUDPAR). Here, we focus on the magnitude of SUDPAR. Finally, it is important to learn more about SUDPAR for the implementation of effective prevention strategies.
Collapse
Affiliation(s)
- Fulvio A Scorza
- Neuroscience Discipline, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Neuroscience Center of the Woman Health "Professor Geraldo Rodrigues de Lima", Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.
| | - Marcia Guimarães-Marques
- Neuroscience Discipline, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Mariana Nejm
- Neuroscience Discipline, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Antônio Carlos G de Almeida
- Neuroscience Center of the Woman Health "Professor Geraldo Rodrigues de Lima", Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Laboratory of Experimental and Computational Neuroscience, Department of Biosystems Engineering, Universidade Federal de São João del-Rei (UFSJ), São João del-Rei, MG, Brazil
| | - Carla A Scorza
- Neuroscience Discipline, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Neuroscience Center of the Woman Health "Professor Geraldo Rodrigues de Lima", Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - Ana C Fiorini
- Neuroscience Center of the Woman Health "Professor Geraldo Rodrigues de Lima", Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Department of Phonoaudiology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Phonoaudiology Post graduation Program, Pontifícia Universidade Católica de São Paulo (PUC-SP), São Paulo, SP, Brazil
| | | |
Collapse
|