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Methodology for Biomimetic Chemical Neuromodulation of Rat Retinas with the Neurotransmitter Glutamate In Vitro
Published on: December 19, 2017
Naturally occurring compounds affect glutamatergic neurotransmission in rat brain
Lucia Helena Martini1, Fernanda Jung, Felix Antunes Soares
1Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2600-Anexo, Porto Alegre, RS 90035-003, Brazil.
Neurochemical Research
|June 20, 2007
Summary
Natural products impact therapeutic drug development. This study reveals plant-derived compounds modulate glutamate neurotransmission, affecting pain signaling pathways and offering potential for novel analgesics.
Area of Science:
- Pharmacology
- Neuroscience
- Natural Products Chemistry
Background:
- Natural products are vital sources for drug discovery.
- Glutamate functions as a key excitatory and nociceptive neurotransmitter in the central and peripheral nervous systems.
- Several plant-derived compounds are recognized for their potential antinociceptive properties.
Purpose of the Study:
- To investigate the effects of various plant-derived hydroalcoholic extracts on glutamatergic transmission.
- To assess the impact of specific compounds like polygodial and drimanial on glutamate binding, uptake, and release.
- To explore the potential of these natural products in modulating pain pathways.
Main Methods:
- Utilized hydroalcoholic extracts from Drymis winteri, Phyllanthus, Jathopha elliptica, Hedyosmum brasiliense, Ocotea suaveolens, Protium kleinii, Citrus paradise, soybean, and Crataeva nurvala.
- Assessed effects on [(3)H]glutamate binding, [(3)H]glutamate uptake by synaptic vesicles and astrocyte cultures, and synaptosomal [(3)H]glutamate release.
- Evaluated antinociceptive effects of selected compounds.
Main Results:
- All tested glutamatergic transmission parameters were influenced by at least one plant extract.
- Drimanial and polygodial demonstrated the most extensive and significant effects on glutamatergic parameters.
- The study identified specific natural compounds that modulate key aspects of glutamate signaling.
Conclusions:
- Plant-derived compounds can significantly modulate glutamatergic transmission.
- Drimanial and polygodial warrant further investigation for their precise mechanisms of action and therapeutic potential.
- These findings suggest natural products as promising candidates for developing novel pain management strategies targeting the glutamatergic system.
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