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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | de Munck, Estefanía Muñoz-Sáez, Emma Miguel, Begoña G. Solas, M. Teresa Ojeda, Irene Martínez, Ana Gil, Carmen Arahuetes, Rosa Ma |
| Description | Country affiliation: Spain Author Affiliation: de Munck E ( Departamento de Biología Animal II, Universidad Complutense de Madrid, 28040 Madrid, Spain.) |
| Abstract | ß-N-methylamino-l-alanine (L-BMAA) is a neurotoxic amino acid that has been related to various neurodegenerative diseases. The aim of this work was to analyze the biotoxicity produced by L-BMAA in vivo in rats, trying to elucidate its physiopathological mechanisms and to search for analogies between the found effects and pathologies like Amyotrophic Lateral Sclerosis (ALS). Our data demonstrated that the neurotoxic effects in vivo were dosage-dependent. For evaluating the state of the animals, a neurological evaluation scale was developed as well as a set of functional tests. Ultrastructural cell analysis of spinal motoneurons has revealed alterations both in endoplasmic reticulum and mitochondria. Since GSK3ß could play a role in some neuropathological processes, we analyzed the alterations occurring in GSK3ß levels in L-BMAA treated rats, we have observed an increase in the active form of GSK3ß levels in lumbar spinal cord and motor cerebral cortex. On the other hand, (TAR)-DNA-binding protein 43 (TDP-43) increased in L-BMAA treated animals. Our results indicated that N-acetylaspartate (NAA) declined in animals treated with L-BMAA, and the ratio of N-acetylaspartate/choline (NAA/Cho), N-acetylaspartate/creatine (NAA/Cr) and N-acetylaspartate/choline+creatine (NAA/Cho+Cr) tended to decrease in lumbar spinal cord and motor cortex. This project offers some encouraging results that could help establishing the progress in the development of an animal model of sporadic ALS and L-BMAA could be a useful tool for this purpose. |
| File Format | HTM / HTML |
| ISSN | 13826689 |
| Issue Number | 2 |
| Volume Number | 36 |
| e-ISSN | 18727077 |
| Journal | Environmental Toxicology and Pharmacology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-09-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Health Discipline Pharmacology Amino Acids, Diamino Amyotrophic Lateral Sclerosis Chemically Induced Motor Cortex Pathology Nerve Degeneration Spinal Cord Metabolism Physiopathology Animals Aspartic Acid Analogs & Derivatives Caspase 3 Choline Creatinine Dna-binding Proteins Disease Models, Animal Endoplasmic Reticulum Glycogen Synthase Kinase 3 Magnetic Resonance Spectroscopy Male Mitochondria Motor Activity Neurologic Examination Phenotype Rats Rats, Wistar Time Factors Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Medicine Toxicology Pharmacology |
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