Background: The study was carried out to evaluate the effects of short-term transdermal hormone replacement therapy (HRT) on glycaemic control, lipid metabolism, C-reactive protein (CRP) and proteinuria in high-risk post-menopausal women. Methods: A total of 20 well-controlled type 2 diabetic, hypertensive and 21 well-controlled glucose-tolerant, hypertensive postmenopausal women were prospectively enrolled. After 12 weeks of transdermal HRT, the changes in serum lipid sub-fractions, fasting glucose, fructosamine, glycated haemoglobin (HbA1c), CRP, creatinine, 24 h urine protein levels, creatinine clearance and blood pressure were evaluated. Results: After 12 weeks of treatment, serum total-cholesterol and low-density cholesterols (LDL-cholesterol) appeared slightly reduced and serum triglyceride slightly elevated, although non-significantly so in both groups. The increase in HDL-cholesterol (P < 0.05) and reduction in very low density (VLDL)-cholesterol (P < 0.05) levels were significant in hypertensive patients. Elevation in the Apolipoprotein A1 (P < 0.05) and reduction in the Apolipoprotein B (P < 0.05) levels were statistically significant in all patients. HRT was associated with significant decreases in serum fasting glucose (P < 0.05) and fructosamine (P < 0.05) levels in diabetic patients. Serum HbA1c, CRP, creatinine, 24 h urine protein levels, creatinine clearance and systolic and diastolic blood pressure did not change significantly in either group. Conclusions: There were no detrimental effects of transdermal HRT on lipid profile, glucose metabolism, CRP and urine protein levels in our well-controlled diabetic or hypertensive patients. A decision regarding HRT use should be taken on a case-by-case basis., Results:All of the patients completed the study. The mean body mass index (BMI) was 31.27 and 30.95 kg/m2 in the DM-HRT and HT-HRT groups respectively. Estraderm TTS plus NETA was associated with statistically significant decreases in serum mean fasting glucose and fructosamine levels, and with a non-significant reduction in serum mean HbA1c level in the DM-HRT group. Significant changes were seen in mean serum VLDL (decreased) and HDL-cholesterol (increased) levels in the HT-HRT group. The increase in mean serum Apo-A1 level and the reduction in mean serum Apo-B level were statistically significant in both treatment groups. Serum CRP, creatinine, 24 h urine protein levels, creatinine clearance and systolic and diastolic blood pressure did not change significantly during 12 weeks of transdermal HRT in both groups. High-risk postmenopausal women did not have any adverse effect on proteinuria and serum creatinine levels after 3 months of Estraderm TTS plus NETA treatment., TypeofStudy:A prospective, open study evaluating the effects of short-term hormone replacement therapy (HRT) Estraderm TTS plus norethisterone acetate (NETA) (=Estracombi TTS) on glycemic control, lipid metabolism, C-reactive protein (CRP) and proteinuria in high-risk postmenopausal women with diabetes and/or hypertension., DosageDuration:17beta-estradiol 0.05 mg daily and sequential norethisterone acetate 0.25 mg daily transdermally. Duration was 12 weeks., AdverseEffects:2 subjects (10%) in the DM-HRT group and 1 subject (4.7%) in the HT-HRT group complained about abnormal vaginal bleeding such as metrorrhagia and 4 patients (19%) reported breast tenderness in the HT-HRT group. No patient experienced detrimental effects on lipid profile, glucose metabolism, CRP and urine protein levels., AuthorsConclusions:Additional research will be necessary to determine the effects of long-term transdermal HRT in high-risk postmenopausal women. We conclude that decisions about HRT should be taken on a case-by-case basis, and in doing so it is important to include the potential personal benefits and risk profile, especially in high-risk postmenopausal women., FreeText:In order to maintain their glucose levels in an acceptable range, women with type 2 diabetes were on dietary management alone (2 patients) or taking oral antidiabetic drugs that consisted of metformin and sulfonylureas (18 patients). Each diabetic patient received a diabetic diet with, Indications:20 patients with diabetes type 2 and hypertension and 21 patients with hypertension., Patients:41 postmenopausal women. Type 2 diabetes and hypertension group (DM-HRT group): n=20, mean age was 50.9 years. Hypertension group (HT-HRT group): n=21, mean age was 52.6 years.