Abstract
Brain asymmetry is understood as an anatomical, functional or neurochemical difference between the two hemispheres. It is not a static but rather a dynamic phenomenon in which both environmental and endogenous factors act as modulators. Aging modifies brain asymmetry, and an imbalance in specific asymmetries characterizes some brain disorders such as schizophrenia, depression, infantile autism or Alzheimers disease. However, it is not clear whether these changes are a cause or a consequence of these disorders. Although this phenomenon has been extensively studied, its functional significance is not yet clear, and the neurochemical basis underlying anatomical or functional asymmetries in the brain is still poorly understood. In recent decades intensive research on the behaviour of neuropeptides has revealed asymmetries in their distribution in the brain, and there is evidence that the lateralized patterns of distribution are involved in the regulatory control of some neuropeptidase activities. Therefore, if these enzymatic activities are distributed asymmetrically, their endogenous substrates would presumably be affected in an asymmetrical way, as would the functions they are involved in. Here we review the most significant literature regarding human and animal brain asymmetry involving neuropeptides such as corticotropin-releasing hormone, cholecystokinin, luteinizing hormonereleasing hormone, thyrotropin-releasing hormone and angiotensin II, as well as their neuropeptidases.
Keywords: neurochemical asymmetry, aminopeptidases, environmental factors, neuropeptides, brain disorders
Current Protein & Peptide Science
Title: Neuropeptides, Neuropeptidases and Brain Asymmetry
Volume: 5 Issue: 6
Author(s): Manuel Ramirez, Isabel Prieto, Francisco Vives, Marc de Gasparo and Francisco Alba
Affiliation:
Keywords: neurochemical asymmetry, aminopeptidases, environmental factors, neuropeptides, brain disorders
Abstract: Brain asymmetry is understood as an anatomical, functional or neurochemical difference between the two hemispheres. It is not a static but rather a dynamic phenomenon in which both environmental and endogenous factors act as modulators. Aging modifies brain asymmetry, and an imbalance in specific asymmetries characterizes some brain disorders such as schizophrenia, depression, infantile autism or Alzheimers disease. However, it is not clear whether these changes are a cause or a consequence of these disorders. Although this phenomenon has been extensively studied, its functional significance is not yet clear, and the neurochemical basis underlying anatomical or functional asymmetries in the brain is still poorly understood. In recent decades intensive research on the behaviour of neuropeptides has revealed asymmetries in their distribution in the brain, and there is evidence that the lateralized patterns of distribution are involved in the regulatory control of some neuropeptidase activities. Therefore, if these enzymatic activities are distributed asymmetrically, their endogenous substrates would presumably be affected in an asymmetrical way, as would the functions they are involved in. Here we review the most significant literature regarding human and animal brain asymmetry involving neuropeptides such as corticotropin-releasing hormone, cholecystokinin, luteinizing hormonereleasing hormone, thyrotropin-releasing hormone and angiotensin II, as well as their neuropeptidases.
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Cite this article as:
Ramirez Manuel, Prieto Isabel, Vives Francisco, de Gasparo Marc and Alba Francisco, Neuropeptides, Neuropeptidases and Brain Asymmetry, Current Protein & Peptide Science 2004; 5 (6) . https://dx.doi.org/10.2174/1389203043379350
DOI https://dx.doi.org/10.2174/1389203043379350 |
Print ISSN 1389-2037 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5550 |
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