24-hour profiles of salivary progesterone.

Objectives: To assess whether the known pulsatility of P secretion by the corpus luteum, which is detected in blood by P measurements, translates into fluctuations of saliva P concentrations, and to determine how well saliva P measurements reflect plasma P concentration. A second objective was to see whether there is a window in the luteal phase, where P secretion has reached its maximum capacity, but the amplitude is not very accentuated, which would be an ideal time to measure P.

Design: Twenty-one ovulatory women were randomly assigned to be studied on day 5, 7, or 8 after the luteinizing hormone surge.

Sex steroids do not alter melatonin secretion in the human.

It is unclear whether sex steroids influence melatonin secretion in the human. In an attempt to find an answer to this important question 36 women within an age range of 19 to 40 years were studied within a 3-month period under the following conditions: natural menstrual cycle, ovulation induction with gonadotrophins, early pregnancy, and intake of monophasic or triphasic oral contraceptives. Except in the case of pregnancy, repeated measurements in the same individual were done because of the well-known large inter-individual variations in melatonin secretion.

Laparoscopic electrocoagulation of the ovarian surface in infertile patients with polycystic ovarian disease.

Objective: To assess the endocrinologic and clinical outcome after laparoscopic ovarian electrocautery because of polycystic reaction to ovarian stimulation in anovulatory infertility patients.

Design: Between 1986 and 1989, 133 patients with polycystic ovarian disease underwent laparoscopic electrocoagulation of the ovarian surface in an outpatient clinic after conventional ovarian stimulation had led to polycystic reaction.

Setting: All patients were referred to our outpatient clinic affiliated with the university hospital.

A direct immunoradiometric assay for human plasma prorenin: concentrations in cycling women and in women taking oral contraceptives.

Two synthetic penta deca peptides corresponding to the N-terminal portion (amino acid sequence 1-15) and the C-terminal portion (sequence 32-46) of the pro moiety of the human prorenin (PR) molecule were coupled to BSA and used as antigens to generate antibodies against PR. In a RIA system using the 125I-labeled peptide as tracer, it could be shown that antibodies against peptide 32-46 bound the peptide and the native PR in the follicular fluid (FF) to a similar degree, whereas antibodies generated against peptide 1-15 did not specifically recognize native PR. The specificity of the PR-(32-46) antibodies for PR was demonstrated by comparative measurements of PR by RIA and by an indirect procedure (involving trypsin treatment of PR) in different individual FF samples, plasma samples, and fractions of FF obtained by gel filtration or immunoaffinity chromatography.

[Results of treatment with surface cauterization of polycystic ovaries in sterility patients].

In 39 women with polycystic ovaries (PCO) and a history of sterility, laparoscopic electrocautery of the surface of the ovaries was performed by a technique adapted from Gjoennaess (1984). Previous hormonal treatment with clomiphene and/or human menopausal gonadotropins had been unsuccessful in these patients, whilst 23 of them (59%) conceived within one year after surgery. Electrocautery was followed by a decrease of mean testosterone levels from 0.