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Biomedical subjects

C W Peterson

Publications and source records attributed to C W Peterson.

6 recordsLinked to original sources

3D solution structure of copper and silver-substituted yeast metallothioneins.

3D solution structural calculations for yeast silver(I)-substituted metallothionein (MT) and native copper(I) MT were completed using experimentally determined NOE and dihedral angle constraints, in conjunction with experimentally derived metal-to-Cys connectivities for AgMT which were assumed identical for CuMT. For the first 40 residues in both structures, the polypeptide backbone wraps around the metal cluster in two large parallel loops separated by a deep cleft containing the metal cluster. Minor differences between the two structures include differences in hydrogen bonds and the orientation of the N-terminus with the overall protein volume conserved to within 6.5%.

Amino Acid Sequence↗

Treating hemophilia.

Hemophilias A and B are inherited disorders of clotting-factor production that are characterized by low levels of factor VIII- or IX-coagulant activity. The clinical course of patients with hemophilia is marked by episodes of hemorrhage, some spontaneous and some related to trauma or medical procedures. The physical well-being of patients with hemophilia is maintained by the prevention of bleeding when possible and by prompt, effective treatment of bleeding when it occurs. Factor-replacement therapy continues to be the mainstay of hemophilia treatment, but like pharmacotherapy for other disease states, it is most effective when provided within the framework of a well-designed, individualized therapeutic plan. Currently available factor concentrates have a much greater safety profile than older products, but they are not free of adverse effects. Patients with inhibitors continue to present a challenge in restoring hemostasis. Pharmacists can play an important role in the pharmaceutical care of patients with hemophilia.

Antifibrinolytic Agents↗

Exploring psychiatric prescribing practices: the relationship between the role of the provider and the appropriateness of prescribing.

The prescribing habits of psychiatrists and neurologists in a large, urban Veterans Administration medical center were surveyed. It was determined that these physicians prescribed a large amount of nonpsychotropic medication, and the rationale for this practice was explored and is presented. Patient expectations in this population derived from certain established sociocultural biases toward the medical profession appeared to significantly influence prescribing practices. Such prescribing behavior suggests that the psychiatrist in this setting is often required to assume the role of primary care provider as part of a larger patient therapist relationship.

Combined Modality Therapy↗

Venous thrombosis: an overview.

Venous thromboembolic disease contributes to morbidity and mortality in certain groups of hospitalized patients, particularly those who have undergone surgery. Although principles of treatment have changed relatively little during the past 20 years, significant advances have been made in the diagnosis of deep vein thrombosis (DVT). Venography, once the only reliable diagnostic technique, has been largely replaced by noninvasive tests: impedance plethysmography, venous Doppler, 125I-radiofibrinogen-uptake test, and phleborheography. Virchow's triad of stasis, vessel injury, and hypercoagulability remains a valid explanation of the pathogenesis of thrombus formation, but laboratory and clinical data have refined our knowledge of how these factors interact to result in clinically significant disease. Knowledge of the natural history of venous thrombosis, plus heightened awareness of the long-term morbidity and expense associated with the postphlebitic syndrome, have led to increased interest in preventing DVT. Clinically and economically, venous thrombosis is best managed by prevention.

Fibrinogen↗