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Effect of carbohydrate ingestion on brain exchange of amino acids during sustained exercise in human subjects.

Blomstrand, E Møller, K Secher, N H Nybo, L

Published in Acta physiologica Scandinavica

The present data show that both tryptophan and BCAA are taken up by the brain during prolonged exercise, and we suggest that the cerebral uptake of tryptophan may relate to increased synthesis of serotonin (5-HT) in the brain.

Duodenal secretion in humans mediated by the EP4 receptor subtype.

Larsen, R Hansen, M B Bindslev, N

Published in Acta physiologica Scandinavica

Effects of PGE2 on secretion in the second part of human duodenum is mediated through the EP4 receptor and not through EP1, EP2, or EP3.

Muscle hypertrophy induced by the Ski protein: cyto-architecture and ultrastructure.

Bruusgaard, J C Brack, A S Hughes, S M Gundersen, K

Published in Acta physiologica Scandinavica

The reduction in specific force observed in MSV ski mice could be explained by a reduced fraction of contractile material and reduced transversal mechanical coupling. The ultrastructural abnormalities could be related to an increase in nuclear domains.

Relaxant effects of beta-adrenergic agonists on porcine and human detrusor muscle.

Badawi, J K Uecelehan, H Hatzinger, M Michel, M S Haferkamp, A Bross, S

Published in Acta physiologica Scandinavica

Beta2-receptors play a main functional role in mediating relaxation of porcine detrusor. Selective beta2- and beta3-agonists similarly relax the human detrusor. Effects were smaller compared with the pig.

Low sodium intake induces an increase in renal monoamine oxidase activity in the rat. Involvement of an angiotensin II d...

De Luca Sarobe, V Nowicki, S Carranza, A Levin, G Barontini, M Arrizurieta, E Ibarra, F R

Published in Acta physiologica Scandinavica

We have concluded that low levels of dopamine in the urine of LS rats are because of an increase in the activity of renal monoamine oxidase and that angiotensin II mediates this increase through stimulation of AT1 receptors.

Melatonin-evoked potentiation of the juvenile rat tail artery neurogenic reactivity depends on degree of the change in t...

Karachentseva, O V Yartsev, V N Dvoretsky, D P Zhdanova, I V

Published in Acta physiologica Scandinavica

These data suggest that melatonin can restore an attenuated neurogenic reactivity of the juvenile rat tail artery. The effect is more pronounced with further decrease in reactivity and might be due to a change in sensitivity of the post-junctional membrane to noradrenaline.

Countercurrent compartmental models describe hind limb skeletal muscle helium kinetics at resting and low blood flows in...

Doolette, D J Upton, R N Grant, C

Published in Acta physiologica Scandinavica

These results suggest a role of arterial-venous diffusion in blood : tissue helium equilibration in skeletal muscle.

Exhaled nitric oxide during normoxic and hypoxic exercise in endurance athletes.

Verges, S Flore, P Favre-Juvin, A Lévy, P Wuyam, B

Published in Acta physiologica Scandinavica

The present study shows lower pulmonary NO in athletes with gas exchange abnormalities during intense exercise in normoxia, while EIH and NEIH athletes have similar decreases in blood gases and pulmonary NO during hypoxic exercise. Decreased pulmonary NO in such conditions may contribute to ventilation-perfusion inequality and/or increase pulmonary...

Exercise-induced hypoxemia may be caused by an insufficient stimulating effect of exercise on the pulmonary generation o...

Gustafsson, Lars E

Published in Acta physiologica Scandinavica

Duodenal bicarbonate secretion--the prostaglandin receptor involved is EP4.

Lundgren, Ove

Published in Acta physiologica Scandinavica

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