Ovarian Hormones · Estrogen
Abuzeid MI et al., 1987 · Fertil Steril
Endocervical gland estrogen receptor (ER) deficiency has been proposed as a possible cause for the poor cervical mucus (CM) in some infertile women with cervical factor. Cytosol ERs were measured in endocervical tissue obtained by biopsy within 3 days of ovulation (determined by the endogenous luteinizing hormone [LH] surge) in five infertile women with persistent poor preovulatory CM (group 1) and in endocervical tissue obtained in the late follicular phase in eight ovulatory women with excellent CM (group 2). ER concentrations were measured in Fmol/mg protein by the dextran-coated charcoal separation method (New England Nuclear Kit, Boston, MA). CM score evaluation and measurement of serum estradiol (E2) and progesterone (P) levels were performed concomitantly. Serum E2 levels of 123.4 +/- 29.3 pg/ml (mean +/- standard error of the mean [SEM]) in group 1 were comparable to E2 levels of 123.3 +/- 15.0 pg/ml in group 2. Serum P concentrations of 0.9 +/- 0.27 ng/ml in group 1 were comparable to 0.79 +/- 0.29 in group 2. A CM score of 4.6 +/- 0.69 in group 1 was significantly lower than 11.6 +/- 0.53 in group 2 (P less than 0.01). The cytosol ER was negative in four of five women in group 1, whereas in group 2, ER was positive in six, borderline in one, and negative in one subject. This study suggests that cytosol ER may be deficient in some women with cervical factor.
Ovarian Hormones · Progesterone
Rönnberg L et al., 1984 · Fertility and sterility
Luteinizing hormone (LH) receptor concentrations in ovarian follicles and corpora lutea were measured in 51 patients with histologically proven endometriosis and in 41 control patients. The LH receptor concentrations in cases of endometriosis were lower during the early (0.43 +/- 0.11 [mean +/- standard error] versus 1.31 +/- 0.27 fmol/mg protein; P less than 0.001) and late (0.48 +/- 0.10 versus 1.59 +/- 0.22 fmol/mg protein; P less than 0.001) follicular phase, and during the late luteal phase (2.62 +/- 0.55 versus 4.62 +/- 0.65 fmol/mg protein; P less than 0.05) of the cycle than in control patients. In contrast to the control patients, the LH receptor concentration during the follicular phase remained constant in endometriosis, being lower in patients with extensive or severe disease than in patients with moderate or mild disease (0.28 +/- 0.07 versus 0.61 +/- 0.21 fmol/mg protein; P less than 0.05). Endometriosis-associated infertility might be a consequence of a defect in the mechanism mediating LH action in the ovaries.
Luteal Phase · Corpus Luteum Function
Younis JS et al., 1994 · Fertil Steril
To examine whether luteal E2 is obligatory for obtaining an adequately developed endometrium. Survey of women with premature ovarian failure (POF) in a prospective, controlled, randomized study. In vitro fertilization unit in a tertiary care university medical center. Fourteen amenorrheic women with POF, candidates for oocyte donation, were divided into two distinct groups with seven women in each subgroup. Endometrial priming with a fixed dose of oral micronized E2, 4 mg/d for 14 days, was similarly performed in the study and the control groups. Progesterone replacement during the luteal phase was also identical in the two groups and was accomplished by IM P in oil, 50 mg/d for another 14 days. Only the control group continued to have the same E2 regimen during the luteal phase. Follicular phase mean E2 levels as well as luteal phase mean P levels were similar in both groups. However, luteal E2 levels differed significantly between the study and the control groups (21 +/- 5 and 692 +/- 199 pg/mL, respectively; conversion factor to SI units, 3.671). Nevertheless, histologic evaluation of endometrial biopsies on days 21 and 26 were similar for both groups. Endometrial gland dating, using light microscopy in the study and the control groups, on day 21, was 19.1 +/- 0.8 and 18.4 +/- 0.5, respectively, and on day 26, 25.4 +/- 0.8 and 25.9 +/- 0.5, respectively. Dating of the stroma in the two biopsies was also similar in both groups. Moreover, transmission electron microscopy performed in two patients of the study group showed typical characteristics of a secretory endometrium. Luteal E2 depletion in the human does not seem to adversely affect the morphological developmental capacity of the endometrium. Our results suggest that E2 secretion by the corpus luteum in the human does not appear to be obligatory for the development of a normal secretory endometrium. The actual receptivity of the endometrium after such preparation needs to be evaluated.
Luteal Phase · Luteal Phase Deficiency
Kusuhara K, 1992 · Horm Res
In order to clarify the relationship between endometrial histology and progesterone (P4), plasma P4 and estradiol levels in the luteal phase were measured in 126 cases of unexplained infertility. Endometrial biopsies were performed in the midluteal period of menstrual cycles. Forty-three of the 126 cases showed retarded endometrium. Of these 43 cases, 23 exhibited three different types of abnormal P4 secretion. Type A showed low P4 levels throughout the luteal period. Type B showed low P4 levels only in the early luteal period. Type C showed normal P4 levels in the early luteal period followed by a prompt decline. These findings indicated that P4 determination during the early, mid- and late luteal phases is necessary to assess P4 secretion. However, 20 of the 43 cases had normal P4 levels through the entire luteal phase, demonstrating an insufficient response of the endometrium to P4. Consequently, histological examination of the endometrium is required to investigate the luteal phase defect.
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