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Maternal and amniotic fluid 17 alpha-hydroxyprogesterone levels during pregnancy: diagnosis of congenital adrenal hyperplasia in utero. 1978

M Nagamani, and P G McDonough, and J O Ellegood, and V B Mahesh

17 alpha-Hdroxyprogesterone levels (17 alpha-OHP) were measured in 70 samples of amniotic fluid and 30 samples of maternal serum obtained at different stages of normal pregnancy and in samples of maternal serum and amniotic fluid from a pregnancy with the fetus affected with congenital adrenal hyperplasia. The mean level of 17 alpha-hydroxyprogesterone in the amniotic fluid from control pregnancies was 133.9 +/- 7.6 ng. per 100 ml. (range, 25.1 to 266.6 ng. per 100 ml). The levels were significantly higher in midpregnancy (157.4 +/- 8.4 ng. per 100 ml.) than in late pregnancy (79.2 +/- 6.8 ng. per 100 ml.) (p less than 0.01). Amniotic fluid 17 alpha-OHP levels in the affected pregnancy were significantly higher than the control levels. Mean maternal 17 alpha-OHP level during early pregnancy and midpregnancy was 259.5 +/- 22 ng. per 100 ml. and there was a two-to three-fold increase after 37 weeks (672.2 +/- 61 ng. per 100 ml.) The maternal 17 alpha-OHP levels in the affected pregnancy were significantly higher than the control levels after 34 weeks, but before 34 weeks, the level was within the range seen in control pregnancies. Measurement of 17 alpha-OHP levels in the amniotic fluid before 24 weeks and maternal serum after 34 weeks can be utilized for the prenatal diagnosis of congenital adrenal hyperplasia.

UI MeSH Term Description Entries
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011296 Prenatal Diagnosis Determination of the nature of a pathological condition or disease in the postimplantation EMBRYO; FETUS; or pregnant female before birth. Diagnosis, Prenatal,Fetal Diagnosis,Fetal Imaging,Fetal Screening,Intrauterine Diagnosis,Antenatal Diagnosis,Antenatal Screening,Diagnosis, Antenatal,Diagnosis, Intrauterine,Prenatal Screening,Antenatal Diagnoses,Antenatal Screenings,Diagnosis, Fetal,Fetal Diagnoses,Fetal Imagings,Fetal Screenings,Imaging, Fetal,Intrauterine Diagnoses,Prenatal Diagnoses,Prenatal Screenings,Screening, Antenatal,Screening, Fetal,Screening, Prenatal
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006908 Hydroxyprogesterones Metabolites or derivatives of PROGESTERONE with hydroxyl group substitution at various sites.
D000308 Adrenocortical Hyperfunction Excess production of ADRENAL CORTEX HORMONES such as ALDOSTERONE; HYDROCORTISONE; DEHYDROEPIANDROSTERONE; and/or ANDROSTENEDIONE. Hyperadrenal syndromes include CUSHING SYNDROME; HYPERALDOSTERONISM; and VIRILISM. Hyperadrenocorticism,Hypercorticism,Adrenal Gland Hyperfunction,Hyperadrenalism,Hyperfunction, Adrenal Gland,Hyperfunction, Adrenocortical
D000312 Adrenal Hyperplasia, Congenital A group of inherited disorders of the ADRENAL GLANDS, caused by enzyme defects in the synthesis of cortisol (HYDROCORTISONE) and/or ALDOSTERONE leading to accumulation of precursors for ANDROGENS. Depending on the hormone imbalance, congenital adrenal hyperplasia can be classified as salt-wasting, hypertensive, virilizing, or feminizing. Defects in STEROID 21-HYDROXYLASE; STEROID 11-BETA-HYDROXYLASE; STEROID 17-ALPHA-HYDROXYLASE; 3-beta-hydroxysteroid dehydrogenase (3-HYDROXYSTEROID DEHYDROGENASES); TESTOSTERONE 5-ALPHA-REDUCTASE; or steroidogenic acute regulatory protein; among others, underlie these disorders. Congenital Adrenal Hyperplasia,Hyperplasia, Congenital Adrenal,Adrenal Hyperplasias, Congenital,Congenital Adrenal Hyperplasias,Hyperplasias, Congenital Adrenal
D000653 Amniotic Fluid A clear, yellowish liquid that envelopes the FETUS inside the sac of AMNION. In the first trimester, it is likely a transudate of maternal or fetal plasma. In the second trimester, amniotic fluid derives primarily from fetal lung and kidney. Cells or substances in this fluid can be removed for prenatal diagnostic tests (AMNIOCENTESIS). Amniotic Fluid Index,Amniotic Fluid Indices,Amniotic Fluids,Fluid Index, Amniotic,Fluid Indices, Amniotic,Fluid, Amniotic,Fluids, Amniotic,Index, Amniotic Fluid,Indices, Amniotic Fluid

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