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Central effects of Tityus serrulatus and Tityus bahiensis scorpion venoms after intraperitoneal injection in rats
- Source :
- Neuroscience Letters. 463:234-238
- Publication Year :
- 2009
- Publisher :
- Elsevier BV, 2009.
-
Abstract
- A great number of studies on scorpion venoms associate their effects to the autonomic nervous system, and few data are available about their action on the central nervous system (CNS). The aim of this work was to evaluate some central effects after intraperitoneal injection of Tityus serrulatus or T. bahiensis scorpion venoms. The hippocampal concentration of some neurotransmitters and their metabolites were determined. Electroencephalographic and behavioral observations were performed, and all brains were removed for histopathological analysis of hippocampal areas. Both venoms induced electrographic and behavioral alterations despite T. bahiensis venom affects less the electrographic activity than T. serrulatus venom. Neurochemical analysis demonstrated no alteration in the extracellular levels of almost all the neurotransmitters evaluated, at least in the hippocampus, and no neuronal loss in this area was observed. Meanwhile, extracellular concentration of HVA increased up to 10 times in approximately 1/3 of the animals of both groups. Scorpion venoms seem to exert a small but important central effect. More studies in this field are necessary because they may be useful in developing new strategies to reduce the damage caused by scorpion stings.
- Subjects :
- Male
Tityus serrulatus
Microdialysis
medicine.medical_treatment
Intraperitoneal injection
Scorpion Venoms
Venom
Scorpion stings
Pharmacology
Hippocampus
complex mixtures
chemistry.chemical_compound
medicine
Animals
Biogenic Monoamines
Amino Acids
Rats, Wistar
Neurotransmitter
Envenomation
Neurotransmitter Agents
biology
General Neuroscience
Neurotoxicity
Brain
Electroencephalography
Homovanillic Acid
biology.organism_classification
medicine.disease
Rats
chemistry
3,4-Dihydroxyphenylacetic Acid
Neuroscience
Subjects
Details
- ISSN :
- 03043940
- Volume :
- 463
- Database :
- OpenAIRE
- Journal :
- Neuroscience Letters
- Accession number :
- edsair.doi.dedup.....667b9145daa1f8ba9254fbc8038fe864