Abstract |
Diet in Type 2 diabetes often reduces both hyperglycaemia and weight and both these factors may contribute to improvement in beta cell function. Sixty-nine subjects with newly diagnosed Type 2 diabetes had their glucose, insulin, intact and 32/33 split proinsulin measured at diagnosis, and after 16 (12-20) weeks of conventional diet. In the whole group following diet there was reduction in weight (p < 0.0001), Haemoglobin A1 (p < 0.0001), and fasting glucose (p < 0.0001). There was a fall in fasting intact proinsulin (p < 0.03), 32/33 split proinsulin (p < 0.0001), and the percentage of fasting proinsulin to total insulin-like molecules (p < 0.0001). Subjects were separated according to weight loss (group 1 < 0.5 kg, group 2 0.5-4 kg, group 3 > 4 kg). Only subjects in group 3 (mean weight loss 6.2 kg) had a fall in fasting insulin (p < 0.04). The fasting glucose achieved following diet was positively correlated with the initial fasting glucose (r = 0.7) and negatively correlated with the degree of insulin deficiency at diagnosis (with the initial 30 min insulin r = -0.62). The effect of diet on the final concentration of insulin, 32/33 split proinsulin and intact proinsulin was examined using multiple regression. The final insulin concentration was determined by the initial BMI and absolute weight loss, 32/33 split proinsulin concentration by the initial fasting glucose and absolute glucose fall, and intact proinsulin concentration by a combination of both weight loss and glucose reduction.(ABSTRACT TRUNCATED AT 250 WORDS)
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Authors | M J Davies, J Metcalfe, J L Day, A Grenfell, C N Hales, I P Gray |
Journal | Diabetic medicine : a journal of the British Diabetic Association
(Diabet Med)
1994 Jan-Feb
Vol. 11
Issue 1
Pg. 71-8
ISSN: 0742-3071 [Print] England |
PMID | 8181257
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Blood Glucose
- Insulin
- Protein Precursors
- proinsulin, des(31,32)-
- Proinsulin
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Topics |
- Blood Glucose
(metabolism)
- Body Mass Index
- Diabetes Mellitus
(blood, diet therapy, physiopathology)
- Diabetes Mellitus, Type 2
(blood, diet therapy, physiopathology)
- Diet, Diabetic
- Fasting
- Female
- Humans
- Insulin
(blood)
- Islets of Langerhans
(metabolism, physiopathology)
- Male
- Middle Aged
- Obesity
- Proinsulin
(blood, metabolism)
- Protein Precursors
(blood, metabolism)
- Time Factors
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