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Updated: Jan 25, 2026
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Published on: February 16, 2024
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Systemic injection of an H4 receptor agonist induces a decrease in CREB and pCREB levels in the cerebellar vermis and
C E M Fernandes1, K R Serafim1, A C L Gianlorenço1
1Laboratório de Neurociência, Departamento de Fisioterapia, Centro de Biologia, Ciências e Saúde, Universidade Federal de São Carlos, São Carlos, SP, Brasil.
Summary
The histamine H4 receptor agonist VUF-8430, when injected into mice, reduced levels of CREB and phosphorylated CREB (pCREB) in the cerebellar vermis and prefrontal cortex, impacting emotional memory pathways.
Area of Science:
- Neuroscience
- Molecular Biology
- Pharmacology
Background:
- Histamine H4 receptors are involved in modulating emotional memory.
- The CREB (cAMP response element-binding protein) pathway is crucial for memory consolidation.
Purpose of the Study:
- To investigate the effect of the H4 receptor agonist VUF-8430 on CREB phosphorylation (pCREB) in brain regions associated with emotional memory.
- To determine if VUF-8430 impacts protein synthesis necessary for memory consolidation.
Main Methods:
- Intraperitoneal injection of VUF-8430 (500 ng/kg) in mice.
- Western blot analysis to measure CREB and pCREB levels.
- Analysis of prefrontal cortex, amygdala, hippocampus, and cerebellar vermis.
Main Results:
- VUF-8430 decreased CREB and pCREB levels in the cerebellar vermis and prefrontal cortex.
- No significant changes in CREB or pCREB were observed in the amygdala and hippocampus.
- The results suggest impaired cell signaling pathway activation in specific brain regions.
Conclusions:
- The H4 receptor agonist VUF-8430 may impair emotional memory consolidation by affecting CREB signaling in the cerebellum and prefrontal cortex.
- Further research is required to fully elucidate the role of H4 receptors in the central nervous system and emotional memory.
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