Neural mechanisms underlying respiratory regulation within the preBötzinger complex of the rabbit
| Autor: | Fulvia Bongianni, Donatella Mutolo, Elenia Cinelli, Tito Pantaleo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Pulmonary and Respiratory Medicine
Agonist Medulla Oblongata Neurotransmitter Agents Physiology medicine.drug_class General Neuroscience Biology Respiratory Center DAMGO chemistry.chemical_compound chemistry Disinhibition Microinjections medicine Central Pattern Generators Respiratory Physiological Phenomena GABAergic Animals Serotonin Rabbits medicine.symptom Respiratory system Neuroscience 5-HT receptor |
| Zdroj: | Respiratory physiologyneurobiology. 293 |
| ISSN: | 1878-1519 |
| Popis: | The preBotzinger complex (preBotC) is a medullary area essential for normal breathing and widely recognized as necessary and sufficient to generate the inspiratory phase of respiration. It has been studied mainly in rodents. Here we report the main results of our studies revealing the characteristics of the rabbit preBotC identified by means of neuronal recordings, D,L-homocysteic acid microinjections and histological controls. A crucial role in the respiratory rhythmogenesis within this neural substrate is played by excitatory amino acids, but also GABA and glycine display important contributions. Increases in respiratory frequency are induced by microinjections of neurokinins, somatostatin as well by serotonin (5-HT) through an action on 5-HT1A and 5-HT3 receptors or the disinhibition of a GABAergic circuit. Respiratory depression is observed in response to microinjections of the μ-opioid receptor agonist DAMGO. Our results show similarities and differences with the rodent preBotC and emphasize the importance of comparative studies on the mechanisms underlying respiratory rhythmogenesis in different animal species. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect