Cited by 49Neural dynamics and brain functionNeuroscience and Neuropharmacology ResearchMelamine detection and toxicity

Impairment of Cognitive Function and Synaptic Plasticity Associated with Alteration of Information Flow in Theta and Gamma Oscillations in Melamine-Treated Rats

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Xu, Xiaxia, An, Lei, Mi, Xichao, Zhang, Tao·2013·PLoS ONE

Abstract

Changes of neural oscillations at a variety of physiological rhythms are effectively associated with cognitive performance. The present study investigated whether the directional indices of neural information flow (NIF) could be used to symbolize the synaptic plasticity impairment in hippocampal CA3-CA1 network in a rat model of melamine. Male Wistar rats were employed while melamine was administered at a dose of 300 mg/kg/day for 4 weeks. Behavior was measured by the Morris water maze(MWM)test. Local field potentials (LFPs) were recorded before long-term potentiation (LTP) induction. Generalized partial directed coherence (gPDC) and phase-amplitude coupling conditional mutual information (PAC_CMI) were used to measure the unidirectional indices in both theta and low gamma oscillations (LG, ~ 30-50 Hz). Our results showed that melamine induced the cognition deficits consistent with the reduced LTP in CA1 area. Phase locking values (PLVs) showed that the synchronization between CA3 and CA1 in both theta and LG rhythms was reduced by melamine. In both theta and LG rhythms, unidirectional indices were significantly decreased in melamine treated rats while a similar variation trend was observed in LTP reduction, implying that the effects of melamine on cognitive impairment were possibly mediated via profound alterations of NIF on CA3-CA1 pathway in hippocampus. The results suggested that LFPs activities at these rhythms were most likely involved in determining the alterations of information flow in the hippocampal CA3-CA1 network, which might be associated with the alteration of synaptic transmission to some extent.

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  • Inhibitory interneurons regulate network oscillations, which synchronize neuronal activity to rhythms that are crucial to learning and memory.

    “Inhibitory interneurons regulate network oscillations, which synchronize neuronal activity to rhythms that are crucial to learning and memory [112–116].”

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  1. [5]Malenka RC, Bear MF (2004) LTP and LTD: an embarrassment of riches. Neuron 44: 5– 21. 15450156
  2. [12]Colon-Ramos DA (2009) Synapse formation in developing neural circuits. Curr Top Dev Biol 87: 53– 79. 19427516 PMC7649972

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Authors
Xu, X., An, L., Mi, X., & Zhang, T.
Affiliations
Nankai University (CN)
Corresponding author
Zhang, Tao
Venue
PLoS ONE
Published
2013-10-30
Volume
8
Issue
10
Pages
e77796
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1991148764
Cited by
49
References
50
Citations by year
2026: 2 · 2024: 3 · 2023: 5 · 2022: 8 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 5 · 2017: 5 · 2016: 3 · 2015: 3 · 2014: 2
FWCI
1.46
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (31171053, 11232005, 31171053, 11232005)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Melamine detection and toxicity
Keywords
melamine toxicity, cognitive impairment, neural information flow, theta oscillations, low gamma oscillations, synaptic plasticity, long-term potentiation, generalized partial directed coherence, phase-amplitude coupling, conditional mutual information, phase locking, local field potentials, Morris water maze
MeSH terms
Algorithms, Animals, Cognition Disorders, Hippocampus, Male, Synaptic Transmission, Neuronal Plasticity, Theta Rhythm, Triazines, Rats, Wistar, Long-Term Potentiation, Maze Learning, Rats, Electrophysiological Phenomena

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