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- Peterson, Per
(författare)
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Barntradition
- 1990
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Ingår i: Nationalencyklopedin. ; 2
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Forskningsöversikt (populärvet., debatt m.m.)
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| 5. |
- Ullman, Annika, 1955-, et al.
(författare)
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Rasism och främlingsfientlighet i svenska läroböcker?
- 1990
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Ingår i: SPOV; Studier av den pedagogiska väven. - Stockholm : Centrum för pedagogisk textforskning, Högskolan för lärarutbildning i Stockholm (HLS). - 0284-0618. ; :9, s. 1-56
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Forskningsöversikt (övrigt vetenskapligt/konstnärligt)
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- Albrektsson, Tomas, 1945, et al.
(författare)
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Direct bone anchorage of oral implants: clinical and experimental considerations of the concept of osseointegration.
- 1990
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Ingår i: The International journal of prosthodontics. - 0893-2174. ; 3:1, s. 30-41
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Forskningsöversikt (refereegranskat)abstract
- The term osseointegration is analyzed in relation to its theoretical and clinical definitions, and comparisons are made to other implant modalities. The term osseointegration has a clear clinical meaning, but there is doubt about its precise usage in an experimental setting. Clinically, an implant can be described as osseointegrated if there is no discernable movement when force is applied to the fixture. This is in contrast to implants surrounded by fibrous connective tissue, which move within soft tissue. Newly developed laboratory techniques may be used in the future to precisely characterize osseointegration in the laboratory.
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- Akerström, B, et al.
(författare)
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An intriguing member of the lipocalin protein family : alpha 1-microglobulin
- 1990
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Ingår i: Trends in Biochemical Sciences. - 0968-0004. ; 15:6, s. 3-240
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Forskningsöversikt (refereegranskat)abstract
- The plasma protein alpha 1-microglobulin is a member of the lipocalin protein superfamily. In the last few years, the work on alpha 1-microglobulin has given unexpected and promising new results. Of particular interest are its molecular association with immunoglobulin A and with proteinase inhibitors, and its interactions with the immune system.
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| 10. |
- Björklund, A, et al.
(författare)
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Reafferentation of the subcortically denervated hippocampus as a model for transplant-induced functional recovery in the CNS
- 1990
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Ingår i: Progress in Brain Research. - 0079-6123. ; 83, s. 411-426
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Forskningsöversikt (refereegranskat)abstract
- Subcortical deafferentation of the hippocampal formation is known to induce profound behavioural deficits. Transplants of fetal septal or brainstem tissue are capable of restoring some aspects of normal physiological and behavioural function in subcortically deafferented (i.e. fimbria-fornix or septal lesioned) rats. Such grafts have been shown to re-establish extensive new afferent inputs to the denervated hippocampal formation. As shown for grafted cholinergic and noradrenergic neurons, the ingrowing axons form laminar innervation patterns which closely mimic those of the normal cholinergic and noradrenergic innervations. The ingrowth appears to be very precisely regulated by the denervated target: each neuron type produces distinctly different innervation patterns; the growth is inhibited by the presence of an intact innervation of the same type; and it is stimulated by additional denervating lesions. Both ultrastructually and electrophysiologically the graft-derived fibres have been seen to form extensive functional synaptic contacts. Biochemically, cholinergic septal grafts and noradrenergic locus coeruleus grafts restore transmitter synthesis and turnover in the reinnervated hippocampus. Intracerebral microdialysis has revealed that acetylcholine and noradrenaline release is restored to normal or supranormal levels in the graft-reinnervated hippocampus, and that the grafted neurons can be activated in a normal way from the host through behavioural activation induced by sensory stimulation or electrical stimulation of the lateral habenula. These results indicate that the grafted monoaminergic neurons can restore tonic regulatory neurotransmission at previously denervated synaptic sites even when they are implanted into the ectopic brain sites. Such functional reafferentation may be sufficient for at least partial restoration of function in the subcortically deafferented hippocampus.
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