Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/181728
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- Title
- Metabotropic neurotransmission and integration of sympathetic nerve activity by the rostral ventrolateral medulla in the rat
- Related
- Franco-Australian Meeting on Hypertension (4th : 2007) (9 - 12 September 2007 : NT, Australia)
- Related
- Bertrand, Paul; Su, Ding-Feng and Evans, Roger. Clinical and experimental pharmacology and physiology, Vol. 35, Issue 4, p.508-511
- DOI
- 10.1111/j.1440-1681.2008.04906.x
- Related
- Blackwell synergy electronic collection
- Publisher
- Oxford : Blackwell Scientific Publications
- Date
- 2008
- FoR/RFCD Code(s)
-
060600 Physiology
- Author/Creator
- Pilowsky, Paul M
- Author/Creator
- Abbott, Stephen B
- Author/Creator
- Goodchild, Ann K
- Author/Creator
- Burke, Peter G. R
- Author/Creator
- Farnham, Melissa M. J
- Author/Creator
- Hildreth, Cara M
- Author/Creator
- Kumar, Natasha N
- Author/Creator
- Li, Qun
- Author/Creator
- Lonergan, Tina
- Author/Creator
- McMullan, Simon
- Author/Creator
- Spirovski, Darko
- Description
- 1. Cardiovascular sympathetic nerve activity at rest is grouped into waves, or bursts, that are generally, although not exclusively, related to the heart rate and to respiration. In addition, activity is also generated in response to central commands and to environmental stimuli. 2. Responsibility for the integration of all these different elements of sympathetic activity rests with pre-motoneurons in the rostral ventrolateral medulla oblongata. These pre-motoneurons are glutamatergic and spinally projecting where they form synapses with sympathetic preganglionic neurons. 3. Pre-motoneurons also contain and presumably release, neurotransmitters other than glutamate, including amines and neuropeptides that act on metabotropic receptors with long-term effects on cell function. 4. Similarly, in the rostral ventrolateral medulla oblongata the pre-motoneurons are mainly regulated by excitatory influences from glutamate and inhibitory influences from gamma-aminobutyric acid (GABA). Major focuses of recent studies are the interactions between non-glutamatergic and GABAergic systems and reflexes that regulate the activity of the sympathetic nervous system. 5. The results indicate that neurotransmitters acting at metabotropic receptors selectively affect different reflexes in the rostral ventrolateral medulla. It is suggested that this differential activation or attenuation of reflexes by different neurotransmitters is a mechanism by which the organism can fine-tune its responses to different homeostatic requirements.
- Description
- 3 page(s)
- Subject Keyword
- 060600 Physiology
- Subject Keyword
- adaptive reflexes
- Subject Keyword
- baroreceptor reflex
- Subject Keyword
- cardiorespiratory regulation
- Subject Keyword
- neuropeptides
- Subject Keyword
- substance P
- Resource Type
- conference paper
- Organisation
- Macquarie University. Australian School of Advanced Medicine
- Identifier
- http://hdl.handle.net/1959.14/181728
- Identifier
- ISSN:0305-1870
- Identifier
- mq-rm-2007009190
- Language
- eng
- Reviewed
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