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T N Bryant

Publications and source records attributed to T N Bryant.

42 records · Page 3Linked to original sources
PubMed1981

Comparison of procedures for determination of copper and zinc in serum by atomic absorption spectroscopy.

Methods used to prepare serum samples for the determination of copper and zinc by atomic absorption spectroscopy have been compared using the results obtained from an external quality control scheme. The methods most commonly employed were dilution with water, dilution with dilute butan-1-ol or propan-1-ol, removal of protein by trichloroacetic acid (TCA) precipitation and electrothermal atomization (ETA). The effects of the inclusion of sodium and potassium ion upon results has been examined. Low results for serum copper are given by the technique of ETA. High zinc values are found following TCA precipitation. None of the methods showed superior between-batch precision. Ionization interference was variable and the addition of sodium and potassium to standard solutions is not always necessary.

Copper↗
PubMed1978

An investigation of the immune response of patients suffering from anorexia nervosa.

Patients suffering from anorexia nervosa rarely appear to develop the common cold or influenza. This study examines the immunological response of fifteen female anorexia nervosa patients of both the vomiting and carbohydrate-abstaining type and compares them with a control population matched for age and occupation. Both anorectics and control populations received the admune influenza vaccine. Initially both groups had similar haemagglutination inhibition titres against the three different viral antigens: A/HK; A/PC; A/Eng. However, the anorectics showed over a 2-month period a higher titre of antibody especially to the Hong Kong virus: this was sigignificant. Cellular immune responses were measured using a tuberculin and a macrophage inhibition test, no significant difference between the two groups was obderved. These results which support the clinical findings are discussed.

Adolescent↗