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Query: UMLS:C0028754 (obesity)
 124,988 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A comparative study was carried out on B cell response to alternative intravenous glucagon (1.0 mg) and intravenous glucose (0.33 g per kg body weight) in healthy non-obese persons (c-NOb), healthy obese persons (C-Ob), non-obese non-insulin-dependent diabetics (NIDD-NOb) and obese non-insulin-dependent diabetics (NIDD-Ob). Each group comprised ten subjects. C-peptide (CP immunoassay using antiserum M 1230) and IRI in the serum were measured for each test. After glucose load in B-cell responses were significantly lower in both the diabetic groups than in the normal groups. After glucagon injection there were no significant differences in IRI and CP levels between NIDD-NOb and C-NOb, however, significantly lower levels of serum CP were noted among NIDD-Ob in comparison to C-Ob with a lack of these differences in IRI levels. This phenomenon is well reflected by the molar IRI/CP ratio expressed as a percentage. In the fasting state IRI accounted in C-Ob for 8.8 +/- 3.5 per cent of CP, while in NIDD-Ob for up to 25. +/- 10.4 percent of CP (P = 0.0004). In the latter group of patients, the IRI/CP ratio after glucagon reached the highest values (over 30 per cent) observed in this study. These data suggest the important role in insulin disposal played by the liver in non-insulin-dependent diabetes associated with obesity. Another explanation for these data is that more proinsulin is secreted in this group of patients as compared to other groups.
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PMID:Serum C peptide and IRI levels after administration of glucagon and glucose in non-insulin-dependent diabetics. 704 Jan 96

To estimate the renal glucose threshold, we measured glucosuria in 546 oral glucose tolerance tests (OGTT) (glucose oxidase method). The subjects, with normal renal function, presented during OGTT one or several peak plasma glucose levels between 10 and 13.4 mmol/l. The renal glucose threshold was thus higher than 10 mmol/l in the 43% of this population who were a glucosuric (normal renal threshold was between 8.8 and 10 mmol/l). The frequency of raised threshold was higher in obese patients than in subjects of normal body weight: indeed from 34% in non obese patients rates rose respectively at 37%, 50% and 68% in obesity groups (10 to 30%, 30 to 50% and 50% over ideal body weight (respectively). This trend was found regardless of the type of glucose tolerance response (ie. normal, IGT, non diagnostic, NIDD).
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PMID:[Effect of obesity on the elevation of renal glucose threshold. Studies during oral glucose tolerance tests (author's transl)]. 709 42

In a retrospective investigation 228 obese persons with healthy metabolism and diabetics (NIDD) were invited to a check-up 4-10 years after a reduction of weight which was performed during a clinical treatment in the 2nd Medical Clinic of Halle University. 95 patients did not comply with the invitation, 9 patients had died in the meantime. Among the 24 obese persons examined were 9 patients with NIDD. In other 19 patients a diabetic metabolic disturbance had become manifest in the meantime. 78 obese persons underwent a clinical examination, among them 9 NIDD. 60 patients had a normal and 18 a pathological carbohydrate tolerance. Of these 18 patients in 9 patients an up to now unknown diabetes mellitus could be proved. The obesity coincides with a relatively high rate of disturbed carbohydrate tolerance and a larger proportion of manifest diabetics compared with the normal population. In the own group of patients the morbidity of diabetes among the obese persons increases from 10.5 to 30% after on an average 7 years. Obese persons who had essentially exceeded their initial weight in the meantime and show further metabolic disturbances are particularly endangered.
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PMID:[Studies on the incidence of diabetes mellitus in obese patients]. 713 89

In Seattle, Washington, the prevalence of diabetes was 20% in second-generation (Nisei) Japanese-American men and 16% in Nisei women 45-74 years old, while the prevalence of impaired glucose tolerance (IGT) was 36% in Nisei men and 40% in Nisei women. Hyperglycemia was less and duration of diabetes shorter in women. Related to diabetes and IGT in Nisei were higher fasting plasma insulin levels and central (visceral) adiposity. Prevalence of diabetes was low among the younger (34-53 years old) third-generation (Sansei) men and women. Among self-reported non-diabetic Sansei, however, prevalence of IGT was 19% in men and 29% in women, and IGT was associated with both increased fasting plasma insulin levels and more visceral fat, suggesting that many Sansei are at risk of future diabetes. An important lifestyle factor in the development of NIDD in Japanese Americans appeared to be dietary saturated (animal) fat. Another factor may be physical inactivity. In Japanese-American women, menopause also appeared to be an important risk factor. These risk factors may be related to fostering the accumulation of visceral fat and the development of insulin resistance. Five-year follow-up examinations performed in non-diabetic Nisei men and women have yielded additional information concerning the prognosis of IGT. Of those women who were IGT at baseline, 34% were diabetic at follow-up while 17% returned to normal. In men who had been IGT at baseline, 18% were diabetic at follow-up while 36% returned to normal. Over the 5-yr follow-up interval, proportionally more women progressed from normal to IGT (54%) then went from IGT to normal (17%). For men, roughly equal proportions went from normal to IGT (37%) as from IGT to normal (36%). It would therefore appear that greater proportions of Nisei women are progressing to IGT and to NIDD than are Nisei men. This observation may be related to the increased risk of developing central obesity and insulin resistance following menopause. Prevalence of cardiovascular disease (hypertension, peripheral vascular disease, and/or coronary heart disease) was increased in Japanese Americans with IGT and NIDD. Neuropathy and retinopathy were associated only with NIDD.
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PMID:Diabetes and diabetes risk factors in second- and third-generation Japanese Americans in Seattle, Washington. 785 32

The objective of this study was to determine the prevalence of hypertension in diabetic patients in an urban Sudanese population compared with a non-diabetic group. It was found that there was a higher prevalence of diastolic hypertension (44%) in the non-insulin-dependent (NIDM) patients. The blood pressures did not correlate with age, duration of diabetes or nephropathy (9% of cases), but obesity which was detected in 34% of the NIDD group may possibly explain the high prevalence of hypertension.
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PMID:Pattern of blood pressure in African diabetics: report from Sudan. 858 69

The current study was undertaken to examine the impact that obesity and non-insulin-dependent diabetes mellitus (NIDDM) have on the ability of glucose to stimulate its own uptake and oxidation in muscle. Euglycemic and hyperglycemic clamp experiments were performed with somatostatin infusions so that insulin could be replaced to basal levels or to physiological hyperinsulinemia. Arteriovenous leg balance methods were used to measure the pathways of leg muscle glucose uptake, oxidation, and storage. Percutaneous biopsies of the vastus lateralis muscle were taken to determine the pyruvate dehydrogenase complex or glycogen synthase activities. During basal insulin replacement, obese compared with lean nondiabetic subjects had higher values for glucose uptake, respiratory quotient, and glucose oxidation (all P<0.05) and a higher proportion of leg energy expenditure derived from glucose. Obese NIDD patients had a greater reliance on fat calories than lean diabetics during basal insulin replacement (P< 0.05). Hyperinsulinemia increased leg glucose metabolism (P<0.001) in all groups, but obese NIDD patients were significantly more insulin resistant. Hyperglycemia in NIDDM compensated for insulin resistance to the extent that rates of glucose metabolism were the same as those for nondiabetics studied at euglycemia. When nondiabetics were studied at hyperglycemia matched to the diabetics, the insulin resistance was still readily apparent.
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PMID:Interaction of carbohydrate and fat fuels in human skeletal muscle: impact of obesity and NIDDM. 863 94

This paper analyses theoretically insulin post-receptor resistance caused by risk factors (RFs)--obesity, energy over-load, low physical activity, stress. Each of these RFs is capable of producing abnormalities directly or indirectly in glucose and lipid metabolism solely or in combination with the others. The RFs pathogenic integration forms in each patient an individual kind of pathogenic integral (PI) which becomes pathogenic because of RFs' pathogenic power summation. Sulfonylurea therapy may increase insulin resistance and become a part of PI. Waiting for perfect medicine, the intensive clinical treatment of RFs seems to be the most reasonable behavior in NIDD.
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PMID:Integrative metabolic effect of risk factors and the pathogenesis of insulin resistance. (theoretic speculations and therapeutic corollaries). 1046 34