alexa Central nervous system toxicity of manganese. II: Cocaine or reserpine inhibit manganese concentration in the rat brain.


Journal of Drug Metabolism & Toxicology

Author(s): Ingersoll RT, Montgomery EB Jr, Aposhian HV, Ingersoll RT, Montgomery EB Jr, Aposhian HV

Abstract Share this page

Abstract Manganese concentrates in the ventral mesencephalon of male Sprague-Dawley rats after intrathecal administration of MnCl2. We tested the hypothesis that Mn concentration in the central nervous system (CNS), particularly in the ventral mesencephalon, is decreased by inhibiting dopamine reuptake using cocaine or by decreasing dopamine concentrations using reserpine. The intrathecal administration of Mn (250 micrograms Mn/rat as MnCl2) caused the Mn concentration in the ventral mesencephalon to increase from 0.57 to 31.8 micrograms Mn/g. Cocaine administration (8.6 mg/kg i.p.) thirty minutes prior to MnCl2 decreased ventral mesencephalon Mn to 3.3 micrograms Mn/g. By giving reserpine (5 mg/kg i.p.) 24 hours prior to MnCl2 the ventral mesencephalon Mn concentration was decreased from 29.9 micrograms Mn/g to 3.7 micrograms Mn/g. Intrathecal MnCl2 decreased the dopamine concentration in the caudate putamen by 40\% six hours after administration. Cocaine or reserpine decreased the Mn concentration in the ventral mesencephalon, occipital pole, frontal lobe and caudate putamen but did not change the Mn concentration in the cerebellum. The results indicate that the mechanism(s) by which Mn is concentrated in many brain regions can be inhibited by cocaine, a dopamine reuptake inhibitor, or by reserpine, a dopamine depleter, and suggest that the Mn concentration in the CNS is related to dopamine reuptake and/or concentration.
This article was published in Neurotoxicology and referenced in Journal of Drug Metabolism & Toxicology

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • European Biopharma Congress
    November 16-17, Vienna, Austria

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

1-702-714-7001Extn: 9037

Business & Management Journals


1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

1-702-714-7001 Extn: 9042

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version