Nine healthy fertile women were studied during 29 menstrual cycles. A cervical mucus grading system, assessed by the patient and used in conjunction with basal body temperature, was correlated with plasma levels of luteinizing hormone (LH), oestradiol and plasma progesterone. The results show that a patient can be taught to predict the time of ovulation by observing the changes in the cervical mucus.
PMID 952797 952797 DOI 10.1111/j.1471-0528.1976.tb00906.x 10.1111/j.1471-0528.1976.tb00906.x
Cite this article
Flynn, A. M., & Lynch, S. S. (1976). Cervical mucus and identification of the fertile phase of the menstrual cycle. British journal of obstetrics and gynaecology, 83(8), 656-659. https://doi.org/10.1111/j.1471-0528.1976.tb00906.x
Flynn AM, Lynch SS. Cervical mucus and identification of the fertile phase of the menstrual cycle. Br J Obstet Gynaecol. 1976;83(8):656-659. doi:10.1111/j.1471-0528.1976.tb00906.x
Flynn, Anna M., and S. S. Lynch. "Cervical mucus and identification of the fertile phase of the menstrual cycle." British journal of obstetrics and gynaecology, vol. 83, no. 8, 1976, pp. 656-659.
Keywords
Adult, Body Temperature, Cervix Mucus/analysis, Estradiol/blood, Female, Fertility, Humans, Luteinizing Hormone/blood, Menstruation, Progesterone/blood, Time Factors, Progesterone, Estradiol, Luteinizing Hormone
To test the association between cytokine levels in the amniotic fluid and (i) the vascular invasion phase of intrauterine infection, (ii) the occurrence of periventricular leukomalacia; to assess the correlation between C-reactive protein levels, a recognised biological marker of inflammation in maternal serum and cytokine levels in the amniotic fluid. Prospective clinical study. Fetal medicine unit and neonatal intensive care unit, Antoine Beclere Hospital, Clamart, France. Thirty-one pregnancies complicated by chorioamnionitis leading to birth before 32 weeks of gestation. Interleukin 1-beta, Interleukin 6 and TNF-alpha prospectively measured in the amniotic fluid. Histological examination of the placenta. Ultrasound examination and magnetic resonance imaging of the brains of the newborn infants performed within the first week of life. The occurrence of periventricular leukomalacia was assessed by transfontanellar ultrasound and magnetic resonance imaging. There was a significant positive correlation between the occurrence of histological chorioamnionitis, vascular extension of infection of the membranes, maternal inflammatory syndrome and neonatal sepsis. A strong association was found between maternal serum C-reactive protein concentrations and cytokine levels in the amniotic fluid. Interleukin-1beta was the best predictor of vascular extension of chorioamnionitis, and TNF-alpha was the best predictor of the development of severe early neonatal infection. There was no association between the amniotic fluid levels of cytokines and the development of periventricular leukomalacia. These data suggest that IL-1beta, IL-6 and TNF-alpha are produced in relation to intrauterine inflammation and infection, but cannot be directly implicated in the development of fetal cerebral white matter lesions.
To examine the risk of multiple sclerosis in users of combined oral contraceptives.
Cohort study conducted between 1968 and 1996 using diagnostic data supplied by General practices throughout the United Kingdom. Royal College of General Practitioners' Oral Contraception Study cohort of initially 46,000 women recruited during the late 1960s. Directly standardised incidence rates of multiple sclerosis were calculated for current, former and never-users of oral contraceptives using first ever cases of multiple sclerosis reported by the general practitioners. The standardisation variables were age, parity, social class and smoking history. Five-year survival rates in the different contraceptive groups were calculated using standard life table techniques. One hundred and fourteen first ever cases of multiple sclerosis had been reported by November 1996 during 564,000 woman-years of observation. The incidence rate in both current and former users was not materially different to that in never-users. Although based on limited evidence there was no suggestion that the five-year survival was affected by a woman's use of combined oral contraceptives. These findings do not suggest a greatly elevated risk of multiple sclerosis during, or after, use of combined oral contraceptives.
To investigate changes in plasma lipid and lipoprotein levels induced by peroral oestrogen replacement and transdermal oestradiol gel therapy. The effects of peroral oestradiol valerate tablets (2 mg) and placebo gel were compared with 1g transdermal oestradiol gel (1mg oestradiol) and placebo tablets in a randomised, double-blind, double-dummy study for 6 months. Department of Internal Medicine, University of Oulu and Oulu Deaconess Institute, Oulu, Finland. Seventy-nine hysterectomised, postmenopausal women, 39 women in the peroral oestrogen group and 40 in the gel group. Cholesterol and triglycerides in total plasma and in various lipoprotein fractions, and sex hormones. In the peroral oestrogen group total and LDL cholesterol were decreased and HDL cholesterol and triglycerides were increased. In the oestradiol gel group plasma total, LDL and VLDL cholesterol and the ratio of LDL/HDL cholesterol were significantly decreased, but no change in HDL cholesterol and triglycerides was observed. Overall the decrease in LDL levels was correlated with the increase in oestrogen levels. Both peroral and transdermal replacement therapy had beneficial effects on plasma lipids by lowering total and LDL cholesterol and LDL/HDL cholesterol ratio. These changes seem to be associated with changes in oestrogen levels.