H-A. Hansson

Learn More
A total of 2895 threaded, cylindrical titanium implants have been inserted into the mandible or the maxilla and 124 similar implants have been installed in the tibial, temporal or iliac bones in man for various bone restorative procedures. The titanium screws were implanted without the use of cement, using a meticulous technique aiming at(More)
The aim of the present study was to investigate if distant effects could be detected within the central nervous system after impact of a high-energy missile in the left thigh of young pigs. Pressure transducers implanted in various parts of the body of the animal, including the brain, recorded a short-lasting burst of oscillating pressure waves with high(More)
Rapid head rotation is a major cause of brain damage in automobile crashes and falls. This report details a new model for rotational acceleration about the center of mass of the rabbit head. This allows the study of brain injury without translational acceleration of the head. Impact from a pneumatic cylinder was transferred to the skull surface to cause a(More)
There is little information on threshold levels and critical time factors for blast exposures, although brain damage after a blast has been established both clinically and experimentally. Moreover, the cellular pathophysiology of the brain response is poorly characterized. This study employs a rat model for blast exposure to investigate effects on the(More)
The aim of this study is to monitor excitatory amino acids (EAAs) in the extracellular fluids of the brain and to characterize regional neuronal damage in a new experimental model for brain injury, in which rabbits were exposed to 180-260 krad/s2 rotational head acceleration. This loading causes extensive subarachnoid hemorrhage, focal tissue bleeding,(More)
Rabbit antisera against homogeneous rat liver thioredoxin and thioredoxin reductase (NADPH-oxidized thioredoxin oxidoreductase, E.C. were prepared and used for immunohistochemical analysis in adult rats. Immunoreactive thioredoxin and thioredoxin reductase were widely distributed in tissues and organs, but varied a lot between cell types.(More)
Thioredoxin and thioredoxin reductase were localized immunohistochemically in the rat sciatic nerve by immunofluorescence using specific rabbit antisera. Both proteins showed strong immunoreactivity in the cytoplasm of Schwann cells and at the nodes of Ranvier. The axoplasm of myelinated axons also showed a low, evenly distributed immunoreactivity for both(More)
The cellular and subcellular distribution of the S-100 protein in rabbit and rat central nervous system was studied both quantitatively and qualitatively. Microcomplement fixation estimations on bulk-prepared neuronal and glial cells showed at least five to six times higher amounts of water-soluble S-100 in glial cell-enriched fractions as compared to(More)
The repair of nerve gap injuries with tubular nerve guides has been used extensively as an in vivo test model in identifying substances which may enhance nerve regeneration. The model has also been used clinical nerve repair. The objective of this study was to compare three different gel matrix-forming materials as potential vehicles for growth factors in(More)