Uptake of adenosine and release of adenine derivatives in mammalian non-myelinated nerve fibres at rest and during activity.

1. Influx of adenosine into rabbit non-myelinated nerve fibres was measured using [2-(3)H]adenosine. The uptake of radioactivity increased linearly with duration of incubation for up to 60 min and adenosine concentration up to 200 mum.

Effects of calcium and lanthanum on phosphate efflux from nonmyelinated nerve fibers.

Phosphate efflux was measured as the fractional rate of loss of radioactivity from rabbit vagus loaded with radiophosphate. The effects of changes in extracellular calcium and of lanthanum have been investigated. In Locke solution with normal, 0.

Phosphate ion transport in rabbit brain synaptosomes.

Synaptosomes (vesicles of nerve endings) isolated from rabbit brain were studied as a model system for the uptake of inorganic phosphate. The phosphate uptake showed a sodium-dependent, saturable component with a Kt of 0.29 mM.

[Depressive patients in institutional treatment. 1st results of an epidemiologic study of the Weissenauer Depression Ward].

Between the end of 1976 and the beginning of 1980 more than 700 patients were admitted to the Weissenau Depression Ward. The most important data were obtained by way of special questionnaires, and part of it will be presented in abridged form in the following paper. In respect of the distribution of sex and age, marital status, manner and background of admission, psychiatric case history, duration of hospitalization, nosological allocation, above all for the nature of depression, age, phenomenological and nosological distribution, course of illness, time of hospitalisation, and therapeutical success interesting information is gained.

The correction factors for sucrose gap measurements and their practical applications.

The distribution of extracellular and intracellular potential in the sucrose gap apparatus, previously established for a single fiber using the cable equations for a core conductor model (Jirounek and Straub, Biophys. J., 11:1, 1971), is obtained for a multifiber preparation.

Regulation of Na-dependent phosphate influx across the mucosal border of duodenum by 1,25-dihydroxycholecalciferol.

Animals teated with disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP), at doses which decrease the renal production and/or the plasma levels of 1,25-dihydroxycholecalciferol [1,25(OH)2D3], display a reduced net absorption of phosphate. In this study we investigated whether EHDP-treatment and administration of 1,25(OH)2D3 to EHDP-treated animals affected the phosphate influx across the mucosal border of rabbit duodenum. The initial rate of phosphate influx into mucosal cells was measured in isolated intestine.

Equine leukocyte antigen system. I. Serological studies.

Lymphocytotoxic alloantibodies have been recognized in primiparous mare sera and colostra using the two-step microcytotoxicity test. The antigens detected on the leukocyte membrane do not occur on the erythrocytes. After testing on a cell panel from unrelated horses, absorptions with leukocytes were carried out.

Release of inorganic phosphate during activity in mammalian non-myelinated nerve fibres.

1. The efflux of labelled phosphate was measured in desheathed rabbit vagus nerve at rest and during activity.2.

Observations on the mechanism for the active extrusion of lithium in mammalian non-myelinated nerve fibres.

1. A study has been made of the O2 consumption, and the corresponding efflux of labelled phosphate, from the non-myelinated fibres of the desheathed rabbit vagus nerve at 37 degrees C in Locke solutions in which various ions were substituted for Na, and also in the presence of ouabain. 2.

Oxygen consumption and phosphate efflux in mammalian non-myelinated nerve fibres.

1. A comparison has been made between the efflux of labelled phosphate from the non-myelinated fibres of the desheathed rabbit vagus nerve at 37 degrees C and the corresponding O2 consumption at rest and during activity, and during a variety of experimental interventions. 2.

Serial learning in the pigeon.

Three pigeons learned to peck four colors in a particular sequence, regardless of how these colors were positioned on four response keys and without feedback following each response. This demonstrates that serial learning is possible in subprimate animals.

Phosphate efflux and oxygen consumption in small non-myelinated nerve fibres at rest and during activity.

1. The oxygen consumption and the movements of labelled phosphate were measured in garfish olfactory nerve at rest and during activity.2.

Efflux of inorganic phosphate from mammalian non-myelinated nerve fibres.

1. Uptake and release of radiophosphate were measured in desheathed rabbit vagus nerve. 2.