Long-term effects of oral estradiol and dydrogesterone on carbohydrate metabolism in postmenopausal women.
Gaspard, Ulysse ; Wery, Olivier ; Scheen, André et al
in Climacteric : The Journal of the International Menopause Society (1999), 2(2), 93-100
OBJECTIVE: To determine in postmenopausal women the long-term effects on carbohydrate metabolism of the administration of oral micronized 17 beta-estradiol (2 mg/day continuously) and cyclical ... [more ▼]
OBJECTIVE: To determine in postmenopausal women the long-term effects on carbohydrate metabolism of the administration of oral micronized 17 beta-estradiol (2 mg/day continuously) and cyclical dydrogesterone (10 mg/day for 14 days per 28-day cycle). METHODS: A 2-year open-label prospective, non-comparative study was carried out of 13 healthy postmenopausal women receiving cyclical estradiol and dydrogesterone and serving as their own controls. Concentrations of blood glucose, plasma insulin, C-peptide, glucagon and free fatty acids (FFAs) were determined before treatment (base-line) and at 6, 12 and 24 months of hormone replacement therapy under fasting conditions and during a standard 75-g, 3-h, oral glucose tolerance test (OGTT). RESULTS: Fasting blood glucose levels were unchanged throughout the study, and the mean areas under the curves (AUCs) for glucose response increased slightly but non-significantly versus baseline; fasting plasma insulin levels tended a decrease, and AUCs for insulin responses to the glucose load fell by 23% from baseline (not significant); fasting C-peptide levels and AUCs were unchanged; plasma glucagon fasting levels and responses were in the normal range and stable throughout the study; and plasma FFA fasting levels decreased significantly, as well as FFA AUCs during OGTTs, at the 12th and 24th months of the study. CONCLUSIONS: During a 2-year treatment with oral estradiol and cyclical dydrogesterone, a direct progesterone derivative, tolerance to glucose was unchanged, fasting plasma insulin and insulin response to repeated glucose loads were decreased, and C-peptide levels remained unchanged, indicating a potential improvement in insulin sensitivity and clearance, as in younger women; additionally, a slightly enhanced antilipolytic activity of insulin was observed. [less ▲]Detailed reference viewed: 52 (1 ULg)
Insulin secretion, metabolism and sensitivity before and after a protein-sparing modified fast in obese subjects.
Paquot, Nicolas ; Scheen, André ; et al
in Diabetologia (1990), 33(suppl), 216Detailed reference viewed: 6 (0 ULg)
Pharmacokinetics and pharmacological properties of two galenical preparations of glibenclamide, HB419 and HB420, in non insulin-dependent (type 2) diabetes.
Scheen, André ; ; et al
in International Journal of Clinical Pharmacology, Therapy, and Toxicology (1987), 25(2), 70-6
The pharmacokinetics and pharmacological properties of a new micronized preparation of glibenclamide (HB420, 3.5 mg/tablet) were compared to those of the classical formulation (HB419, 5 mg/tablet) in non ... [more ▼]
The pharmacokinetics and pharmacological properties of a new micronized preparation of glibenclamide (HB420, 3.5 mg/tablet) were compared to those of the classical formulation (HB419, 5 mg/tablet) in non insulin-dependent diabetics. In a double-blind cross-over randomized acute study, blood glucose, plasma insulin, C-peptide and glibenclamide levels were determined in 10 patients after a standardized breakfast taken 15 min following the ingestion of 1.1 +/- 0.2 tablets of HB419 or HB420. Plasma glibenclamide levels rose faster, the peak value was higher (637 +/- 154 versus 411 +/- 76 nmol/l, p less than 0.05) and the area under the curve from 0 to 240 min was 35% greater (p less than 0.05) on HB420 than on HB419. Nevertheless, the post-breakfast hormonal and metabolic changes were similar with both preparations. In a single-blind cross-over chronic study, 12 patients were treated during 3 successive 6 to 8-week periods--HB419, HB420, HB419--with glibenclamide at a dose of 1.8 +/- 0.3 tablets/day. While fasting blood glucose concentrations remained unchanged throughout the study, postprandial levels decreased from 10.9 +/- 0.8 mmol/l during the HB419 pre-period to 9.2 +/- 0.6 mmol/l during HB420 (p less than 0.02) and rose again up to 10.4 +/- 0.8 mmol/l during the last HB419 period (p less than 0.05). Similarly HbA1c decreased slightly from 7.4 +/- 0.3 to 7.2 +/- 0.4% (NS) and increased again up to 7.8 +/- 0.4% (p less than 0.025).(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]Detailed reference viewed: 38 (0 ULg)
Immunogenicity of semisynthetic human insulin in man. Long-term comparison with porcine monocomponent insulin.
; ; et al
in Acta Diabetologica Latina (1986), 23(2), 101-6
The levels of circulating IgG-insulin antibodies were determined in two groups of diabetic patients before and at 3-month intervals after starting insulin treatment either with monocomponent porcine ... [more ▼]
The levels of circulating IgG-insulin antibodies were determined in two groups of diabetic patients before and at 3-month intervals after starting insulin treatment either with monocomponent porcine insulin (n = 17) or with human semisynthetic insulin (SH) (n = 16). Patients were followed during 15.1 +/- 1.0 and 19.9 +/- 1.1 months, respectively (m +/- SEM). In addition, the quality of metabolic control and residual B-cell function were evaluated in the group under treatment with SHI. The percentage of patients who remained antibody-free after 12-21 months of treatment was 67.75% in the human insulin-treated group and only 25-43% in the one receiving porcine insulin (p less than 0.01). Moreover, insulin antibody titers, when present, were usually lower in subjects treated with human insulin. In SHI-treated patients: metabolic control was excellent during the first months of treatment as evidenced by values of mean daily blood glucose (7.3 +/- 0.6 mmol/l), M-index according to Schlichtkrull (7.4 +/- 2.4) and Hb1c (6.8 +/- 0.6%); residual B-cell function, evaluated at 3-month intervals by a circadian profile of plasma C-peptide did not decrease throughout the study; and a significant deterioration of blood glucose control occurred after 18 months of treatment, which might have been due to a less intensive supervision of the patients by the physicians and/or less careful attention by the patients themselves. This observation confirms the need for a continuous education of the patients regardless of the type of insulin used. [less ▲]Detailed reference viewed: 37 (0 ULg)