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Biomedical subjects

R Viner

Publications and source records attributed to R Viner.

29 records · Page 2Linked to original sources

Crystallographic analysis of triclosan bound to enoyl reductase.

Molecular genetic studies with strains of Escherichia coli resistant to triclosan, an ingredient of many anti-bacterial household goods, have suggested that this compound works by acting as an inhibitor of enoyl reductase (ENR) and thereby blocking lipid biosynthesis. We present structural analyses correlated with inhibition data, on the complexes of E. coli and Brassica napus ENR with triclosan and NAD(+) which reveal how triclosan acts as a site-directed, picomolar inhibitor of the enzyme by mimicking its natural substrate. Elements of both the protein and the nucleotide cofactor play important roles in triclosan recognition, providing an explanation for the factors controlling its tight binding to the enzyme and for the emergence of triclosan resistance.

Anti-Infective Agents, Local↗

Melanie Klein and Anna Freud: the discourse of the early dispute.

Divisions in the field of the psychoanalysis of children can be traced to a dispute over the infantile super-ego between the theorists Melanie Klein and Anna Freud beginning in 1927. These divisions are understood within the analytic world as the result of scientific disputation between alternative valid theories. An examination of the language, claims, and epistemology of Klein's and Freud's publications in 1927 that marked the public commencement of the conflict, reveals a personalized discourse in which authority was derived from the allegiance, experience, and personal analytic standing of the contestants as much as from theoretical insight. The structure and rhetoric of the debate suggest that, rather than terminating the dispute, the publications of 1927 served to encourage professionalization in child analysis and establish Anna Freud and Melanie Klein as authoritative alternative theorists.

Adolescent↗

Family stress and metabolic control in diabetes.

The common clinical assumption that stress has a deleterious effect on metabolic control in insulin dependent diabetes mellitus (IDDM) has not been confirmed in children and adolescents. This cross sectional study of 43 children and adolescents with IDDM and their families examined the relations between family life stress, family social support, and metabolic control. High family life stress was found to be strongly correlated with HbA1c in the whole group (n = 43) and in children under 12 years (n = 27) when considered separately. Family social support was not found to be directly related to HbA1c, but was found to buffer the effects of family life stress. These findings support the hypotheses that family stress affects metabolic control in IDDM and that good social support buffers these deleterious effects.

Adolescent↗