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Biomedical subjects

J González-Merlo

Publications and source records attributed to J González-Merlo.

31 records · Page 2Linked to original sources
PubMed1982

Dehydrogesterone versus vaginal progesterone in the treatment of the endometrial luteal phase deficiency.

Forty-four infertile patients with inadequate luteal phase histologically documented in at least two separate cycles and normal plasma levels of progesterone (P), estradiol (E2), and prolactin (PRL) were entered into treatment plans on a random basis involving at least 3 months of each of the following: P vaginal suppositories, dehydrogesterone, and no treatment. Success rates were similar for P (62.5%) and dehydrogesterone (68.7%), based on a corrected endometrial defect during the fourth treated cycle or when a term pregnancy was achieved. However, these figures are significantly different (P less than 0.001) when compared with 16.6% of the control group. In ten additional infertile patients with normal luteal function as assessed by endometrial histologic study and hormone measurements, a second biopsy was performed in a consecutive cycle under dehydrogesterone administration. In no case was the normal secretory pattern impaired. It is concluded that (1) both P and dehydrogesterone can be used to advantage in the treatment of luteal phase defects, and (2) therapy with dehydrogesterone does not alter the normal pattern of endometrial secretion.

Administration, Oral↗
PubMed1982

Luteal phase in infertility: problems of evaluation.

This study was undertaken to examine the endometrial data in 200 infertile women whose three progesterone estimations per cycle totaled over 15 ng/ml when taken from 11 to 4 days preceding menstruation. Forty-three patients (21.5%) showed defective endometria in two separate cycles. No difference was found when plasma progesterone concentrations in this group were compared with those of the remaining 157 infertile patients with normal endometria. Further, plasma progesterone in infertile women (both groups) was similar to a control group of 12 fertile women with normal secretory endometria. Endometrial biopsy is essential in the evaluation of luteal function in infertility and cannot be totally replaced by the use of plasma progesterone in three samples during the luteal phase since it failed to detect as much as 21.5% of abnormal secretory phases.

Adult↗
PubMed1981

Abortion may sensitize the mother to HLA antigens.

The incidence of cytotoxic antibodies in relation to histories of abortions was analyzed in sera from 474 nulliparous pregnant women. In patients with previous spontaneous abortions, there is a higher incidence of positive sera than in primigravidae. Furthermore, patients with two or more prior abortions show a greater incidence of cytotoxic activity in their sera than women who have had only one abortion.

Abortion, Spontaneous↗
PubMed1981

Further evidence against preeclampsia as an immune complex disease.

Sera from 25 preeclamptic women were examined for the presence of circulating immune complexes (CICs) by the radioisotopic C1q binding assay (C1q-BA), the polyethylene glycol precipitation-complement consumption (PEG-CC) test, and the microcomplement consumption test (MCT). Five abnormal values were found by the MCT; 4 became normal after delivery, as did the preeclamptic clinical signs. Normal values were obtained by the C1q-BA and the PEG-CC test in all preeclamptic patients. In addition, maternal HLA antibodies and complement levels were investigated. There was no correlation between lymphocytotoxic activity and CICs in sera from patients with preeclampsia. Complement levels were in the normal range in all cases. It is concluded that CICs do not play a significant role in the pathogenesis of preeclampsia.

Antigen-Antibody Complex↗
PubMed1981

Effects of HLA antibodies on pregnancy.

To investigate the effect of maternal HLA antibodies on the evolution of pregnancy, we tested sera from 187 pregnant women for the presence of lymphocytotoxic antibodies (anti-HLA-A, -B, and -C and anti-B lymphocytes or anti-HLA-DR). Patients were studied before 20 weeks, between 21 and 30 weeks, and between 31 and 40 weeks' gestation. No correlation was found between the presence of such antibodies and obstetric complications, fetal wastage, placental weight, or infant birth weight. Patients with anti-DR antibodies delivered more female than male infants by a 3:1 ratio.

Abortion, Spontaneous↗
PubMedDate not supplied

Shared HLA antigens between parents and recurrent spontaneous abortion.

Ten couples with a history of at least three (mean 3.8) consecutive spontaneous abortions of unknown etiology and 57 normal fertile couples (means 2.6 children) were tested for HLA antigens. The frequencies of shared HLA-A, -B and -DR antigens among members of the couples were similar in both groups. Our results, as well as analysis of the data in the literature, contradict HLA antigens sharing between parents as a determinant of recurrent spontaneous abortion.

Abortion, Habitual↗
PubMedDate not supplied

[Study of anti-DR antibodies in sterility and infertility (author's transl)].

The presence of anti-DR antibodies with lymphocyte cytotoxicity test was studied in five groups of patients: 50 males with no history of blood transfusions who comprised the control group, 44 contraceptive-using women, 55 pregnant women, 41 primary sterile and 47 infertile patients. The high and similar degree of sensitization found in both pregnant and sterile patients lead us to the conclusion that anti-DR antibodies are not a cause of sterility and that spermatozoa are highly immunogenic. The biological significance of the antibodies is discussed.

Antibodies↗