| 1. |
- Allwood, Jens, 1947
(författare)
-
Ickeverbal kommunikation - en översikt
- 1979
-
Ingår i: In: Stedje, A., & af Trampe, P. (eds.) Tvårspråkighet (Papers from the Second Nordic Conference on Bilingualism). Stockholm: Akademilitteratur. - 9174100904
-
Tidskriftsartikel (refereegranskat)
|
|
| 2. |
|
|
| 3. |
- Asanuma, H., et al.
(författare)
-
Projection of individual pyramidal tract neurons to lumbar motor nuclei of the monkey
- 1979
-
Ingår i: Experimental Brain Research. - 0014-4819 .- 1432-1106. ; 34, s. 73-89
-
Tidskriftsartikel (refereegranskat)abstract
- The projection of individual pyramidal tract (PT) neurons from the hindlimb area in the precentral gyrus of the cerebral cortex to the lumbar spinal cord was studied in the monkey by systematically searching for sites within identified regions of the spinal gray from which the PT neurons could be antidromically activated by local stimulation. All investigated neurons belonged to the fast conducting fraction of PT neurons. The following results were obtained. 1. Each PT neuron could be activated from more than one region of the spinal gray matter, including identified spinal motor nuclei and areas dorsomedial to these nuclei, but not the intermediate nucleus or regions dorsal to it. "Passage areas" and "termination areas" were defined. 2. Half of the PT neurons with termination areas within motor nuclei had these areas in more than one nucleus. There were thus strong suggestions for synaptic contacts of some PT neurons with motoneurons of more than one muscle. 3. Four groups of three or four neurons were recorded simultaneously by the same cortical electrode. Comparisons of passage and termination areas within groups revealed both similarities and differences in projections of neighboring neurons. Every neuron was activated from some region(s) where others of the group were not. Common passage areas, or passage and termination areas, for two or three neurons of a group within at least one motor nucleus were found for all groups. Termination areas in the same motor nucleus have been found for the majority of the neurons of only one group. These common projection areas are compatible with, but do not prove, that a group of adjacent PT neurons has common target cells in the spinal cord. © 1979 Springer-Verlag.
|
|
| 4. |
- Bjercke, Olav, et al.
(författare)
-
Dental fear: A nnew treatment
- 1979
-
Ingår i: Rapport från Avdelningen för Oral Diagnostik, Odontologiska kliniken, Göteborgs unniversitet. ; 2:2, s. 1-11
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 5. |
- Breimer, Michael, 1951, et al.
(författare)
-
Selected ion monitoring of glycospingolipid mixtures. Identification of several blood group type glycolipids in the small intestine of an individual rabbit.
- 1979
-
Ingår i: Biomedical mass spectrometry. - : Wiley. - 0306-042X .- 1096-9888. ; 6:6, s. 231-41
-
Tidskriftsartikel (refereegranskat)abstract
- A novel application of selected ion monitoring was used for a mixture of non-acid glycosphingolipids of one rabbit small intestine. Earlier studies of permethylated and permethylated-reduced (LiAIH4) derivatives of model compounds have revealed a specificity and abundance of saccharide ions (terminal monosaccharide(s), disaccharide, trisaccharide, etc., and all sugars plus fatty acid) and of ceramide fragments that permit a conclusive detection of separate glycolipid species in a mixture. The sample (50-200 micrograms) was evaporated slowly (1-5 degrees C min-1 from 150-350 degrees C) from the direct inlet probe of an MS 902 mass spectrometer (electron ionization). Mass spectra with fragments up to about m/z 200 were collected on-line by a computer system. A successive partial separation was obtained for glycolipids with from one up to seven sugars. The structures of eight different compounds were identified. They all had 16:0, 22:0 and 24:0 2-hydroxy fatty acids and 18:0 trihydroxy base (phytosphingosine) as major ceramide components. The dominating complex glycolipid was a hexaglycosylceramide with a blood group B type of sequence. A blood group A type sequence was found in a second hexaglycosylceramide. In support of this, the native mixture showed blood group A and B activity. An intense peak, m/z 182, collected from methylated derivatives were evidence for a dominating type 2 carbohydrate chain of the core tetrasaccharide.
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
- Dave, Göran, 1945, et al.
(författare)
-
Effects of cortisol on the fatty acid composition of the total blood plasma lipids in the European eel, Anguilla anguilla L.
- 1979
-
Ingår i: Comparative Biochemistry and Physiology A. - 1095-6433. ; 64:1, s. 37-42
-
Tidskriftsartikel (refereegranskat)abstract
- 1.1. Fatty acid composition of plasma total lipids was studied in the European eel, Anguilla anguilla L., 1, 4 and 14 days after daily intraperitoneal injections of cortisol (5 mg cortisol-21-phosphate-Na-salt/kg b.w.). 2.2. Cortisol treatment resulted in an elevated percentage of 18:0∗, 20:4 and 20:5 together with a lowered percentage of 16:1 and 18:1, and a lowered plasma lipid triglyceride-phospholipid molar ratio. 3.3. The results suggest that cortisol has a stimulating action on the breakdown of triglycerides and on the metabolism of fatty acids.
|
|
| 9. |
- Dave, Göran, 1945, et al.
(författare)
-
Effects of insulin on the fatty acid composition of the total blood plasma lipids in the european EEL, Anguilla anguilla L
- 1979
-
Ingår i: Comparative Biochemistry and Physiology A. - 1095-6433. ; 62:3, s. 649-653
-
Tidskriftsartikel (refereegranskat)abstract
- 1.1. The fatty acid composition of plasma total lipids in the European eel, Anguilla anguilla L., was studied 3, 10, 24, 96, 168 and 336 hr after i.p. injection of bovine insulin (100 i.u./kg body wt) dissolved in glycine-NaOH buffer solution. Control eels were treated by buffer solution only. 2.2. The insulin-treated eels showed an elevated percentage of palmitoleic acid (16:1) 3 and 336 hr post-injection compared to buffer-treated control eels. 3.3. Insulin caused a significant decrease in the percentage of oleic acid (18:1) 336 hr post-injection. 4.4. Besides the observations mentioned above insulin was not found to have any pronounced effects on the fatty acid composition of total blood plasma lipids.
|
|
| 10. |
- Fetz, E. E., et al.
(författare)
-
Autogenetic inhibition of motoneurones by impulses in group Ia muscle spindle afferents.
- 1979
-
Ingår i: The Journal of Physiology. - : Wiley. - 0022-3751 .- 1469-7793. ; 293, s. 173-195
-
Tidskriftsartikel (refereegranskat)abstract
- 1. Inhibitory post‐synaptic potentials evoked by adequate stimulation of group Ia muscle spindle afferents of homonymous and synergistic muscles and by selective electrical stimulation of tendon organ afferents were analysed in motoneurones of triceps surae and plantaris. 2. Selective activation of Ia afferents was verified to occur with brief stretches of triceps surae and plantaris 35 micrometer or less in amplitude with an initial muscle tension of 5 N; stretches of 30‐‐35 micrometer were estimated to activate 80‐‐90% of Ia afferents in these muscles. Under the same conditions the lowest thresholds for group Ib tendon organ afferents were about 40 micrometer. 3. Stretches less than or equal to 30 micrometer evoked i.p.s.p.s in 80% of triceps surae and plantaris motoneurones; lowest thresholds for evoking i.p.s.p.s wef triceps surae and plantaris motoneurones; lowest thresholds for evoking i.p.s.p.s were 10 micrometer or less. However, such low thresholds for stretch‐evoked i.p.s.p.s, lower than the thresholds for activation of Ib afferents, were found mainly in spinalized, unanaesthetized (after decerebration) or lightly anaesthetized animals. The latencies of these i.p.s.p.s indicated disynaptic and trisynaptic coupling between Ia afferents and motoneurones. The i.p.s.p.s were evoked (i) from the homonymous and synergistic muscles stretched together, (ii) from the homonymous muscles alone and (iii) from the synergistic muscles alone. 4. Control experiments showed that i.p.s.p.s could be evoked by stretches sub‐threshold for discharging motoneurones, thus showing that those i.p.s.p.s were not mediated by Renshaw cells. The stretch‐evoked i.p.s.p.s disappeared after sectioning the nerves from the corresponding muscles, further excluding their mediation by afferents other than group Ia afferents from thf stretched muscle. 5. In order to selectively activate tendon organ afferents, thresholds for excitation of Ia afferents by electrical stimuli were increased to a level above the threshold for Ib afferents by prolonged muscle vibration (Coppin, Jack & MacLennan, 1970). I.p.s.p.s evoked by stimuli near threshold for Ib afferents appeared with latencies indicating disynaptic coupling. Later (trisynaptic) components of Ib i.p.s.p.s required somewhat stronger stimuli. 6. Amplitudes of Ia i.p.s.p.s evoked by muscle stretches activating about 80% of muscle spindle afferents were compared with amplitudes of Ib i.p.s.p.s due to less than 50% of tendon organ afferents of the same muscles. The Ia i.p.s.p.s were much smaller (16‐‐35%) than the Ib i.p.s.p.s. The amplitudes of such Ia and Ib i.p.s.p.s constituted about 10 and 25‐‐66%, respectively, of the maximal i.p.s.p.s evoked by electrical stimulation of all group I afferents. 7. We conclude that inhibition of motoneurones may be evoked from Ia muscle spindle afferents from homonymous and synergistic muscles as well as from Ib tendon organ afferents... © 1979 The Physiological Society
|
|
