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Serum Oestradiol (serum + oestradiol)

Distribution by Scientific Domains

Medical Sciences	85%

Selected Abstracts

A comparison of 25 mg and 50 mg oestradiol implants in the control of climacteric symptoms following hysterectomy and bilateral salpingo-oophorectomy

BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 8 2000
N. Panay Specialist Registrar
Objectives 1. To compare the effects of 25 mg and 50 mg oestradiol implants on serum follicle stimulating hormone and oestradiol levels; and 2. to assess the relationship of the dose of oestradiol implant and serum oestradiol on the effectiveness and duration of climacteric symptom control. Design Randomised, double-blind investigation. Participants Forty-four women, who had undergone total abdominal hysterectomy and bilateral salpingo-oophorectomy. Methods The women were randomised to receive either 25 mg (n= 20) or 50 mg (n= 24) oestradiol implants. Follow up consisted of prospective symptom enquiry and hormone assays. Main outcome measures Primary: climacteric symptom control: duration and effectiveness; secondary: serum oestradiol and follicle stimulating hormone levels Results Serum oestradiol was significantly higher and serum follicle stimulating hormone significantly lower after the fourth month of treatment in women receiving 50 mg implants. No significant difference in symptom control was noted in the two groups. The mean duration of symptom control was similar in the two groups: 5.9 months (SD 2.4) in those receiving 50 mg oestradiol and 5.6 months (SD 2.3) in those receiving 25 mg. Conclusion The higher level, 50 mg oestradiol implants does not result in better control of symptoms nor in longer periods of symptom control compared with 25 mg oestradiol implants. In order to maximise compliance, 25 mg oestradiol implants should therefore be the treatment of choice for women with normal bone density seeking relief of climacteric symptoms. [source]

Oestradiol replacement treatment and glucose homeostasis in two men with congenital aromatase deficiency: evidence for a role of oestradiol and sex steroids imbalance on insulin sensitivity in men

DIABETIC MEDICINE, Issue 12 2007
V. Rochira
Abstract Aims The role of sex steroids in glucose and insulin metabolism in men remains unclear. To investigate the effects of sex steroids and oestrogen on insulin sensitivity in men, we studied two male adults with aromatase deficiency (subject 1 and subject 2). Methods The effects of transdermal oestradiol (tE2) treatment at different dosages on insulin sensitivity were studied before tE2 treatment (phase 1), and after 6 months (phase 2) and 12 months of tE2 treatment (phase 3) by means of homeostasis model assessment,insulin resistance (HOMA-IR) and Quantitative Insulin Sensitivity Check Index (QUICKI), insulin tolerance test (ITT), and oral glucose tolerance test (OGTT). The latter was performed only in subject 1, as subject 2 suffered from Type 2 diabetes. Results The restoration of normal serum oestradiol led to improved insulin sensitivity, as shown by changes in HOMA-IR and QUICKI. The ITT provided evidence of improved insulin sensitivity during tE2 treatment. Insulin secretion after OGTT was reduced during tE2 treatment in subject 1. After 12 months of tE2 treatment, insulin sensitivity was improved compared with in phases 1 and 2. Conclusions The study suggests a direct involvement of oestrogens in insulin sensitivity, and supports a possible role of oestradiol : testosterone ratio, which may be as influencial as the separate actions of each sex steroid on glucose homeostasis. [source]

Association between oestradiol and puerperal psychosis

ACTA PSYCHIATRICA SCANDINAVICA, Issue 2 2000
A. Riecher-Rössler
Objective: Postpartum psychiatric disorders with long-lasting adverse sequelae are common during the childbearing years. These disorders can be severe and resistant to conventional psychiatric treatment methods. We present two consecutive cases with puerperal psychosis who were refractory to conventional treatment methods but responded successfully to oestrogen therapy. Method: Serum oestradiol concentration was measured by radioimmunoassay and the documented oestradiol deficiency replaced with physiological oestradiol sublingually. The treatment effect was evaluated by the Brief Psychiatric Rating Scale. Results: In both cases the baseline oestradiol concentration was low (28 and 69 pmol/L). During the treatment with oestradiol, there was a concomitant elevation of the concentration of serum oestradiol, which coincided with the decline in psychotic symptoms. Conclusion: The observation of low serum oestradiol together with psychotic symptoms and successful treatment with oestradiol suggests that oestradiol may have a causal relevance to puerperal psychosis and significance in the treatment of this condition. [source]

Variations in carotid arterial compliance during the menstrual cycle in young women

EXPERIMENTAL PHYSIOLOGY, Issue 2 2006
Koichiro Hayashi
The effect of menstrual cycle phase on arterial elasticity is controversial. In 10 healthy women (20.6 ± 1.5 years old, mean ±s.d.), we investigated the variations in central and peripheral arterial elasticity, blood pressure (carotid and brachial), carotid intima,media thickness (IMT), and serum oestradiol and progesterone concentrations at five points in the menstrual cycle (menstrual, M; follicular, F; ovulatory, O; early luteal, EL; and late luteal, LL). Carotid arterial compliance (simultaneous ultrasound and applanation tonometry) varied cyclically, with significant increases from the values seen in M (0.164 ± 0.036 mm2 mmHg,1) and F (0.171 ± 0.029 mm2 mmHg,1) to that seen in the O phase (0.184 ± 0.029 mm2 mmHg,1). Sharp declines were observed in the EL (0.150 ± 0.033 mm2 mmHg,1) and LL phases (0.147 ± 0.026 mm2 mmHg,1; F= 8.51, P < 0.05). Pulse wave velocity in the leg (i.e. peripheral arterial stiffness) did not exhibit any significant changes. Fluctuations in carotid arterial elasticity correlated with the balance between oestradiol and progesterone concentrations. No significant changes were found in carotid and brachial blood pressures, carotid artery lumen diameter, or IMT throughout the menstrual cycle. These data provide evidence that the elastic properties of central, but not peripheral, arteries fluctuate significantly with the phases of the menstrual cycle. [source]

Follicular, Oocyte and Embryo Features Related to Metabolic Status in Primiparous Lactating does Fed with High-Fibre Rearing Diets

REPRODUCTION IN DOMESTIC ANIMALS, Issue 5 2010
M Arias-Álvarez
Contents Fertility of primiparous lactating does in the early postpartum (pp) period is very low mainly due to pronounced deficient energy intake, influencing oocyte and embryo developmental competence. The hypothesis used in this work was that high-lignin fibre diet supplied during the rearing period could increase feed intake and, consequently, improve the reproductive physiology and metabolic status of primiparous does in the early pp period. Diets with high-lignin [HL: 15.8% dry matter (DM)] or standard-lignin content (SL: 4.9% DM) were supplied until parturition time. No diet effects in serum oestradiol, progesterone concentrations and follicle categories were found in the histological study. Metaphase II rate of in vitro -matured oocytes was significantly higher in the SL vs the HL group (p < 0.001). Cytoplasmically degenerated oocytes (in terms of abnormal distribution of cortical granules) and follicular atresia rate were significantly lower in the SL group than in the HL group (p < 0.05 and p < 0.005 respectively). In addition, HL-fed does showed lower number of viable embryos and higher rate of retarded in vivo -recovered embryos compared with the SL group (p < 0.05). Neither in vitro embryo development of viable embryos nor conception rate was significantly different between groups. Feed intake increased during the first pregnancy in the HL group (p < 0.05), but not during early lactation. Serum protein, non-esterified fatty acid and leptin concentrations, as well as estimated body composition were similar in does fed with both diets. In conclusion, the enhancement of reproductive management by using highly lignified products in rearing diets does not seem to report physiological reproductive benefits affecting oocyte maturation rate and embryo viability in primiparous lactating does. [source]