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Biomedical subjects

O Eckerdal

Publications and source records attributed to O Eckerdal.

28 records · Page 2Linked to original sources
PubMed1979

[Hypocycloidal tomography of the temporomandibular joint region].

Tomography has become an important diagnostic method today. Clinically it is necessary to recognize the interpretative problems with tomographs. The reason for and the development of a few frequent tomographic phenomena were described using the results of comparative anatomic and roentgenographic examinations.

Autopsy↗
PubMed1977

Cyclic AMP in dental and periodontal tissues during tooth eruption in kittens.

Cyclic adenosine 3',5'-monophosphate (cAMP) concentrations and cellular distribution were studied in dental and periodontal tissues during tooth eruption in kittens. Although the mean levels of cAMP around developing teeth were similar in all the tissue samples, there were marked differences in cAMP stainability of tissues apical and occlusal to the erupting teeth.

Alveolar Process↗
PubMed1976

Demonstration of cyclic AMP in bone cells by immuno-histochemical methods.

By utilizing immunohistochemical procedures it was possible to locate bone cells that contained adenosine 3'5'-monophosphate (cyclic AMP) in frozen, undecalcified cat jaw sections. An immunoglobulin-enzyme bridge method was found to be superior to other techniques, including immunofluorescence. Differences in staining pattern were found between bone cells of kittens and young adult cats, indicating different metabolic levels related to cellular maturity, and different intracellular compartmentalization of cyclic AMP in the two age groups.

Age Factors↗
PubMed1976

Cellular localization of cyclic AMP in periodontal tissues during experimental tooth movement in cats.

Using an immune-histochemical method, cyclic AMP was localized in cells of periodontal tissues in orthodontically-treated cats. Sixteen cats were treated for periods ranging from 1 hour to 4 weeks. Fresh, frozen, undecalcified 6 mu sections of the tissues were incubated with rabbit anti-cyclic AMP antibodies, followed by sequential incubations with sheep anti-rabbit IgG, rabbit anti-peroxidase IgG and horseradish peroxidase. In the final step, the peroxidase was demonstrated by the diaminobenzidine (DAB) method. It was found that the number of intensely stained cells increased within a short time in areas in which bone resorption or apposition occurred later. However, differences in the pattern of cellular activation were found to exist between areas of compression and tension. The alveolar osteocytes appeared to be affected to only a slight degree by the applications of mechanical forces. These results indicate: (a) that our immune-histochemical method was useful in following the cellular distribution of cyclic AMP during bone remodeling; and (b) that mechanical forces may affect only a small part of the bone cell population and therefore cannot be regarded as an efficient means to bring about extensive bone remodeling.

Alveolar Process↗