EFFECT OF HIGH OR LOW FREQUENCY ELECTROACUPUNCTURE ON THE CELLULAR ACTITIVY OF CATECHOLAMINERGIC NEURONS IN THE BRAIN STEM
| Autor: | Myung-soo Kang, Jang Hern Lee, Ho Jae Han, Young Bae Kwon, Byoung-choul Ahn, Chun-jae Ahn |
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| Rok vydání: | 2000 |
| Předmět: |
Male
medicine.medical_specialty Rats Sprague-Dawley Catecholamines Dorsal raphe nucleus Arcuate nucleus Internal medicine medicine Animals Premovement neuronal activity Neurons Arc (protein) Tyrosine hydroxylase business.industry General Neuroscience Colocalization Immunohistochemistry Rats Electroacupuncture Anesthesiology and Pain Medicine Endocrinology nervous system Complementary and alternative medicine Locus coeruleus Catecholaminergic cell groups business Brain Stem |
| Zdroj: | Acupuncture & Electro-Therapeutics Research. 25:27-36 |
| ISSN: | 0360-1293 |
| DOI: | 10.3727/036012900816356235 |
| Popis: | Although the opioid system plays a pivotal role in the analgesic effect of electroacupuncture (EA), it has been suggested that other peptidergic systems also may be involved in the therapeutic effect of EA. Among several peptides for EA-induced analgesia, catecholamine (CA) is associated with the descending pain inhibitory system. We evaluated whether the different frequencies of EA modified the cellular activity of central CA synthesizing neurons using double labeling immunohistochemistry between Fos-like immunoreactive (FLI) neurons and dopamine-beta-hydroxylase (DBH)/tyrosine hydroxylase (TH)-positive neurons. We observed that different frequencies of EA increased the number of FLI neurons in catecholaminergic neurons, such as the dorsal raphe (DR), hypothalamic arcuate nucleus (Arc), locus coeruleus (LC), A5 noradrenaline cells (A5), and A7 noradrenaline cells (A7). In addition, different frequencies of EA significantly increased the ratio of colocalization between FLI neurons and TH positive neurons in DR, LC and Arc. Only low frequency EA increased the neuronal activity in Arc. The ratio of double labeling between FLI and DBH positive neurons was also elevated at both LC and A5. These data demonstrate that different frequencies of EA increase the cellular activity of central CA synthesizing neurons, suggesting that the CA system plays an important role in EA-induced analgesia. |
| Databáze: | OpenAIRE |
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