Cited by 73Neurogenesis and neuroplasticity mechanismsCircadian rhythm and melatoninNerve injury and regeneration

Melatonin supplementation delays the decline of adult hippocampal neurogenesis during normal aging of mice

Ramírez-Rodríguez, Gerardo, Vega-Rivera, Nelly M., Benítez-King, Gloria, Castro-García, Mario, Ortíz-López, Leonardo·2012·Neuroscience Letters

Abstract

Melatonin modulates adult hippocampal neurogenesis in adult mice. Also, plasma melatonin levels and new neuron formation decline during aging probably causing cognitive alterations. In this study, we analyzed the impact of exogenous supplementation with melatonin in three key events of hippocampal neurogenesis during normal aging of mice. The analysis was performed in rodents treated with melatonin during 3, 6, 9 or 12 months. We found an increase in cell proliferation in the dentate gyrus of the hippocampus after 3, 6 and 9 months of treatment (>90%). Additionally, exogenous melatonin promoted survival of new cells in the dentate gyrus (>50%). Moreover, melatonin increased the number of doublecortin-labeled cells after 6 and 9 months of treatment (>150%). In contrast, melatonin administered during 12 months did not induce changes in hippocampal neurogenesis. Our results indicate that melatonin also modulates the neurogenic process in the hippocampus during normal aging of mice. Together, the data support melatonin as one of the positive endogenous regulators of neurogenesis during aging.

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Crossref · 10.1016/j.neulet.2012.09.045

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  • Melatonin decreases during ageing and even more in AD patients, likely leading to cognitive impairments.

    “Melatonin, a hormone mainly synthesized and secreted in the pineal gland, decreases during ageing and even more in AD patients, likely leading to cognitive impairments [151,152].”

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Authors
Ramírez-Rodríguez, G., Vega-Rivera, N. M., Benítez-King, G., Castro-García, M., & Ortíz-López, L.
Affiliations
Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz (MX)
Corresponding author
Ramírez-Rodríguez, Gerardo
Venue
Neuroscience Letters
Publisher
Elsevier BV
Published
2012-11
Volume
530
Issue
1
Pages
53-58
ISSN
0304-3940 (ISSN-L)
OpenAlex
W2006231656
Cited by
71
References
50
Citations by year
2025: 5 · 2024: 1 · 2023: 4 · 2022: 7 · 2021: 4 · 2020: 8 · 2019: 4 · 2018: 5 · 2017: 2 · 2016: 8 · 2015: 9 · 2014: 9 · 2013: 5
FWCI
2.47
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
Consejo Nacional de Ciencia y Tecnología
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
melatonin, adult hippocampal neurogenesis, aging, dentate gyrus, cell proliferation, neuronal survival, doublecortin, cognitive decline, neurogenesis regulation
MeSH terms
Doublecortin Domain Proteins, Aging, Animals, Cell Survival, Central Nervous System Depressants, Cognition, Male, Melatonin, Mice, Inbred BALB C, Microtubule-Associated Proteins, Neurons, Neuropeptides, Dentate Gyrus, Cell Proliferation, Mice, Neurogenesis

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