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  • 1
    ISSN: 1432-0428
    Keywords: Keywords Type II diabetes mellitus, preterm infant, childhood, glucose, insulin, birth weight, growth.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Aims/hypothesis. To test the hypothesis that small size for gestation and poor postnatal growth in preterm infants is associated with higher fasting and post-load plasma glucose and insulin concentrations at 9–12 years of age.¶Methods. Prospective follow-up at 9–12 years of 385 preterm children with birth weight less than 1850 g, who had anthropometry recorded at birth, 18 months and 7 years. Fasting plasma glucose, insulin, proinsulin and 32,33 split proinsulin concentrations and glucose and insulin concentrations 30 min after a standard glucose load were measured.¶Results. Post-load glucose concentrations were negatively related to birth weight, independently of gestation or subsequent growth. Fasting split proinsulin and 30-min insulin concentrations were highest in children who showed the greatest increase in weight centile between birth and current follow-up, regardless of gestation. When weight during childhood was included, birthweight centile was, however, no longer statistically significant: concentrations of fasting, split, proinsulin and 30-min insulin were highest in those children who had shown the greatest increase in weight centile between 18 months of age and current follow-up, with no evidence of a greater effect in those who were smallest at 18 months.¶Conclusion/interpretation. Our findings suggest that fetal growth influences plasma glucose 30 min after a glucose load in preterm children at 9–12 years. In contrast, childhood weight gain is the most important factor influencing insulin concentrations and this effect is the same regardless of early size. [Diabetologia (2000) 43: 714–717]
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 8 (1972), S. 229-235 
    ISSN: 1432-0428
    Keywords: Solid phase radioimmunoassay ; immunoradiometric assay ; labelled antibody ; two site assay ; antigen localisation ; antibody estimation ; cell membranes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Solid phase biochemical systems have many technical advantages. The lecture reviews a number of ways in which solid phase immunological methods may be used in diabetes research. Solid phase antibodies are very convenient for use in radioimmunoassay. The immunoradiometric assay involves the isolation of antibodies onto solid phase antigen, the iodination of the antibodies whilst combined to the solid phase antigen, the elution of the iodinated antibodies and finally their use as a reagent for the measurement of antigen. The two site assay utilises solid phase antibodies to extract and concentrate antigen from solutions such as plasma. The extracted antigen may then be assayed whilst combined with solid phase antigen if a second site on the antigen is available for reaction with I125 — labelled antibody. High specific activity, purified labelled antibodies may also be used for antigen localization, antibody estimation and labelling cell membranes. Cell membrane purification using solid phase antibodies is considered as a further development of this methodology.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 10 (1974), S. 237-243 
    ISSN: 1432-0428
    Keywords: Blood glucose ; plasma insulin ; prediabetes ; diabetes ; prospective survey ; weight change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Blood glucose and plasma insulin concentrations have been measured in the fasting state and 15, 30, 45, 60, 90 and 120 min after 50 g glucose administered orally to subjects tested in a similar manner 5 years previously. — As a result of the previous test the subjects had been divided into three groups: Group I — normal glucose tolerance, no glucosuria; Group II — normal glucose tolerance and glucosuria; Group III — normal fasting blood sugar concentration, but a failure of the blood sugar to return to the fasting level up to 120 min after glucose. — None of the subjects previously classified as normal (Group I), but three (all previously obese) of Group II and five (three previously obese) of Group III had become diabetic. — There was an increasing tendency to loss of weight the worse the glucose tolerance. For all subjects the weight change and change in the 120 min blood glucose concentration, gave a correlation coefficient of −0.47 (p〈0.01). Group III subjects previously of normal weight gained weight (p〈0.02). — It was concluded that obese subjects with defective initial rises in plasma insulin concentration following oral glucose were those most likely to develop diabetes. Some obese subjects with normal glucose tolerance, glucosuria and apparently normal early insulin rise were also prediabetic. — The results suggested that in the former, but not the latter subjects, continued deterioration of the early insulin response was a factor in the emergence of diabetes, but due to the small numbers of subjects no definite conclusion could be reached on this point.
    Type of Medium: Electronic Resource
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