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Biomedical subjects

R E Jordan

Publications and source records attributed to R E Jordan.

At least 91 records · Page 5Linked to original sources
PubMed1978

Indirect pulp-capping of carious teeth with periapical lesions.

Twenty-four vital teeth with deep carious lesions associated with radiographically demonstrable periapical lesions were treated conservatively by means of the indirect pulp-capping technique. Eleven teeth showed apparent resolution of periapical pathology, an absence of pain, and continued vitality when followed up as long as seven years postoperatively.

Adolescent↗
PubMed1977

Studies on lysyl oxidase of bovine ligamentum nuchae and bovine aorta.

Lysyl oxidase had been purified to near homogeneity from bovine aorta and bovine ligamentum nuchae employing a modification of methods described by Harris et al., and Stassen and his colleagues. The aortic enzyme gives rise to at least three peaks and the ligament enzyme resolves into at least four peaks upon chromatography on DEAE cellulose. The molecular weight of each peak of both enzymes is approximately 30,000 daltons in sodium dodecyl sulfate. The aortic enzyme aggregates to species with molecular weights varying from approximately 60,000 to 1,000,000 daltons upon dialysis out of urea into phosphate-buffered saline. Temperature studies reveal that lysyl oxidase is stable to temperatures as high as 80 degrees C, although the assay optimum is 52 degrees C. Studies in progress suggest the temperature dependency of assay may reflect conformational changes in the elastin substrate.

Amino Acid Oxidoreductases↗
PubMed1977

Restoration of fractured and hypoplastic incisors by the acid etch resin technique: a three-year report.

A total of 724 fractured and hypoplastic incisors were restored using an acid etch resin technique in combination with a newly developed "chamfer shoulder" preparation. The retention rate of the restorations, as observed over a three-year period, was 97.1% for the incisal restorations and 94.4% for the labial veneer restorations. According to evidence reported here, the use of pins for such cases is not recommended.

Acid Etching, Dental↗
PubMed1976

Effect of hydrophobic elastin ligands on the stress-strain properties of elastin fibers.

Alkyl sodium sulfates as well as sodium oleate previously shown to bind to insoluble elastin markedly decrease the tensile strength of fibers of ligament elastin. This effect correlates with the increasing number of carbon atoms in the detergent molecules. These data support previously proposed models which emphasize the importance of hydrophobic bonding to the elastic properties of this connective tissue protein.

Animals↗
PubMed1975

Livedo vasculitis (the vasculitis of atrophie blanche). Immunohistopathologic study.

Hyalinizing segmental vasculitis or livedo vasculitis (atrophie blanche) is a clinical entity with a distinctive immunohistopathologic morphology that can be distinguished from other forms of cutaneous vasculitis by histologic and direct immunofluorescent studies. Our studies showed that immunoglobulins and complement components (C-1g, C-3, and properdin) were localized in diseased vessel walls, suggesting an immune pathogenesis.

Atrophy↗