Concentration and seasonal variations of acetylcholine in sleep and waking dialysates
Identifieur interne : 000E11 ( Main/Exploration ); précédent : 000E10; suivant : 000E12Concentration and seasonal variations of acetylcholine in sleep and waking dialysates
Auteurs : M. Monnier [Suisse] ; B. Herkert [Suisse]Source :
- Neuropharmacology [ 0028-3908 ] ; 1972.
English descriptors
- Teeft :
- Acetylcholine, Arousal, Average concentration, Average delta amount, Average value, Capillary tube, Cellophane membranes, Cholinergic, Control dialysates, Control donors, Delta, Delta activity, Dialysate, Dialysates, Donor, Electrical stimulation, Extracorporeal dialysis, Frequency analyzer, Guinea ileum, High concentration, Histamine, Humoral transmission, Ileum, Jugular vein, June july, Main period, Midbrain, Midbrain reticular formation, Midbrain reticular system, Monnier, Monnierand romanowski, Motor cortex, Physiol, Pore size, Ppigers archsges physiol, Preliminary dialysis, Rabbit donors, Reticular, Reticular formation, Reticular system, Seasonal condition, Seasonal variations, Sleepresistant donors, Small amounts, Stimulation episode, Thalamic, Total time, Venous blood, Ventricular system.
Abstract
Abstract: The concentrations of acetylcholine (ACh) were determined in the haemodialysate of rabbits kept experimentally asleep, during extracorporeal dialysis, by stimulating the medio-ventral thalamus, or kept aroused by stimulating the midbrain reticular system. The investigations were performed over 2 yr in order to study the biorhythmic seasonal variations. The dialysates were grouped according to their donors in the following categories: aroused, sleep-resistant (alert or slightly stressed) donors, sleeping and control donors.The concentration of acetylcholine was significantly increased in the donors aroused by stimulation of the reticular system (68.7±4 ngml), whereas in sleep-resistant donors (42.0±9 ngml) and sleeping donors it increased only during the summer. The curve of the ACh concentration was well correlated with the curve of the external daily temperature, both showing a minimum in the winter and a maximum in the summer. This supports the concept of a cholinergic waking mechanism, possibly mediated by the projections ascending from the activating midbrain reticular system to subcortical and cortical structures.
Url:
DOI: 10.1016/0028-3908(72)90003-2
Affiliations:
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Monnier</name><affiliation wicri:level="4"><country xml:lang="fr">Suisse</country><wicri:regionArea>Physiologisches Institut, Universität Basel</wicri:regionArea><placeName><settlement type="city">Bâle</settlement><region nuts="3" type="region">Canton de Bâle-Ville</region></placeName><orgName type="university">Université de Bâle</orgName></affiliation></author><author><name sortKey="Herkert, B" sort="Herkert, B" uniqKey="Herkert B" first="B." last="Herkert">B. 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The investigations were performed over 2 yr in order to study the biorhythmic seasonal variations. The dialysates were grouped according to their donors in the following categories: aroused, sleep-resistant (alert or slightly stressed) donors, sleeping and control donors.The concentration of acetylcholine was significantly increased in the donors aroused by stimulation of the reticular system (68.7±4 ngml), whereas in sleep-resistant donors (42.0±9 ngml) and sleeping donors it increased only during the summer. The curve of the ACh concentration was well correlated with the curve of the external daily temperature, both showing a minimum in the winter and a maximum in the summer. This supports the concept of a cholinergic waking mechanism, possibly mediated by the projections ascending from the activating midbrain reticular system to subcortical and cortical structures.</div></front></TEI><affiliations><list><country><li>Suisse</li></country><region><li>Canton de Bâle-Ville</li></region><settlement><li>Bâle</li></settlement><orgName><li>Université de Bâle</li></orgName></list><tree><country name="Suisse"><region name="Canton de Bâle-Ville"><name sortKey="Monnier, M" sort="Monnier, M" uniqKey="Monnier M" first="M." last="Monnier">M. Monnier</name></region><name sortKey="Herkert, B" sort="Herkert, B" uniqKey="Herkert B" first="B." last="Herkert">B. Herkert</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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