SUMMARY Serum uric acid (SUA) was measured in 512 men and 254 women from two English regions and in 337 men from one Scottish region. Mean SUA levels were the same in the men (5-5 mg/100 ml) and similar in the women (3-9 and 4-1 mg/100 ml). The apparent rarity of gout in Scotsmen cannot be explained by regional differences in SUA levels or in the prevalence of hyperuricaemia (defined as SUA of 7.0 mg/100 ml or over) which was present in 6.6% of the English men and 8 of the Scots
SummaryFour groups of 60 male Alpk:APfSD rats were fed different nutritionally comparable diets for 107 weeks with interim sacrifices at 26, 53 and 77 weeks in order to compare the effect of diet on the incidence of oral disease. Changes in the oral and nasal cavities were assessed by histopathology. Oro-nasal fistulation and severe periodontitis were associated with diets containing fibres originating from oats and barley. An expanded ground diet induced the most severe lesions. Aspects of the pathogenesis of the lesions observed are discussed.
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