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Study on the ability of 1,2,3,4-tetrahydropapaveroline to cause oxidative stress: Mechanisms and potential implications in relation to parkinson's disease.
J Biochem Mol Toxicol. 2006; 20(5):209-20.JB

Abstract

Tetrahydropapaveroline (THP) is a compound derived from dopamine monoamine oxidase-mediated metabolism, particularly present in the brain of parkinsonian patients receiving L-dopa therapy, and is capable of causing dopaminergic neurodegeneration. The aim of this work was to evaluate the potential of THP to cause oxidative stress on mitochondrial preparations and to gain insight into the molecular mechanisms responsible for its neurotoxicity. Our data show that THP autoxidation occurs with a continuous generation of hydroxyl radicals (*OH) and without the involvement of the Fenton reaction. The presence of ascorbate enhances this process by establishing a redox cycle, which regenerates THP from its quinolic forms. It has been shown that the production of *OH is not affected by the presence of either ferrous or ferric iron. Although THP does not affect lipid peroxidation, it is capable of reducing the high levels of thiobarbituric acid-reactive substances obtained in the presence of ascorbate and/or iron. However, THP autoxidation in the presence of ascorbate causes both an increase in protein carbonyl content and a reduction in protein-free thiol content. THP also increases protein carbonyl content when the autoxidation occurs in the presence of iron. The remarkable role played by ascorbate in the production of oxidative stress by THP autoxidation is of particular interest.

Authors+Show Affiliations

Grupo de Neuroquímica, Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Santiago de Compostela, San Francisco 1, E-15782 Santiago de Compostela, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17009235

Citation

Soto-Otero, Ramón, et al. "Study On the Ability of 1,2,3,4-tetrahydropapaveroline to Cause Oxidative Stress: Mechanisms and Potential Implications in Relation to Parkinson's Disease." Journal of Biochemical and Molecular Toxicology, vol. 20, no. 5, 2006, pp. 209-20.
Soto-Otero R, Sanmartín-Suárez C, Sánchez-Iglesias S, et al. Study on the ability of 1,2,3,4-tetrahydropapaveroline to cause oxidative stress: Mechanisms and potential implications in relation to parkinson's disease. J Biochem Mol Toxicol. 2006;20(5):209-20.
Soto-Otero, R., Sanmartín-Suárez, C., Sánchez-Iglesias, S., Hermida-Ameijeiras, A., Sánchez-Sellero, I., & Méndez-Alvarez, E. (2006). Study on the ability of 1,2,3,4-tetrahydropapaveroline to cause oxidative stress: Mechanisms and potential implications in relation to parkinson's disease. Journal of Biochemical and Molecular Toxicology, 20(5), 209-20.
Soto-Otero R, et al. Study On the Ability of 1,2,3,4-tetrahydropapaveroline to Cause Oxidative Stress: Mechanisms and Potential Implications in Relation to Parkinson's Disease. J Biochem Mol Toxicol. 2006;20(5):209-20. PubMed PMID: 17009235.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Study on the ability of 1,2,3,4-tetrahydropapaveroline to cause oxidative stress: Mechanisms and potential implications in relation to parkinson's disease. AU - Soto-Otero,Ramón, AU - Sanmartín-Suárez,Carolina, AU - Sánchez-Iglesias,Sofía, AU - Hermida-Ameijeiras,Alvaro, AU - Sánchez-Sellero,Inés, AU - Méndez-Alvarez,Estefanía, PY - 2006/9/30/pubmed PY - 2006/11/14/medline PY - 2006/9/30/entrez SP - 209 EP - 20 JF - Journal of biochemical and molecular toxicology JO - J Biochem Mol Toxicol VL - 20 IS - 5 N2 - Tetrahydropapaveroline (THP) is a compound derived from dopamine monoamine oxidase-mediated metabolism, particularly present in the brain of parkinsonian patients receiving L-dopa therapy, and is capable of causing dopaminergic neurodegeneration. The aim of this work was to evaluate the potential of THP to cause oxidative stress on mitochondrial preparations and to gain insight into the molecular mechanisms responsible for its neurotoxicity. Our data show that THP autoxidation occurs with a continuous generation of hydroxyl radicals (*OH) and without the involvement of the Fenton reaction. The presence of ascorbate enhances this process by establishing a redox cycle, which regenerates THP from its quinolic forms. It has been shown that the production of *OH is not affected by the presence of either ferrous or ferric iron. Although THP does not affect lipid peroxidation, it is capable of reducing the high levels of thiobarbituric acid-reactive substances obtained in the presence of ascorbate and/or iron. However, THP autoxidation in the presence of ascorbate causes both an increase in protein carbonyl content and a reduction in protein-free thiol content. THP also increases protein carbonyl content when the autoxidation occurs in the presence of iron. The remarkable role played by ascorbate in the production of oxidative stress by THP autoxidation is of particular interest. SN - 1095-6670 UR - https://www.unboundmedicine.com/medline/citation/17009235/Study_on_the_ability_of_1234_tetrahydropapaveroline_to_cause_oxidative_stress:_Mechanisms_and_potential_implications_in_relation_to_parkinson's_disease_ L2 - https://doi.org/10.1002/jbt.20138 DB - PRIME DP - Unbound Medicine ER -