Abstract：
:As part of a multicenter prospective study, second-trimester human chorionic gonadotropin and alpha-fetoprotein concentrations were evaluated. Data included maternal age, human chorionic gonadotropin level, alpha-fetoprotein level, weight, race, and pregnancy outcome of 3428 pregnancies at between 15 and 20 weeks' gestation. The results of the study indicate that human chorionic gonadotropin levels decrease as maternal weight increases, that weight-adjusted human chorionic gonadotropin levels for Oriental and black women are higher than for white or Hispanic women, and that twin pregnancies have higher human chorionic gonadotropin levels than singleton pregnancies. Of 255 pregnancies that did not have normal outcomes, 54 (21.2%) had human chorionic gonadotropin levels greater than 2.0 multiples of the median and 26 (10.2%) had alpha-fetoprotein levels greater than 2.5 multiples of the median. Of 11 pregnancies with fetal aneuploidy, 6 (54.5%) had human chorionic gonadotropin levels greater than 2.0 multiples of the median. It is concluded that in human chorionic gonadotropin screening programs for fetal Down syndrome, weight and race adjustments are necessary for accurate risk assessment.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Bogart MH,Jones OW,Felder RA,Best RG,Bradley L,Butts W,Crandall B,MacMahon W,Wians FH Jr,Loeh PVdoi
10.1016/0002-9378(91)90305-bsubject
Has Abstractpub_date
1991-09-01 00:00:00pages
663-7issue
3eissn
0002-9378issn
1097-6868pii
0002-9378(91)90305-Bjournal_volume
165pub_type
杂志文章abstract：:Sound pressure in amniotic fluid was created by application of either an electronic artificial larynx or a standard audiometric earphone to the abdominal surface of pregnant ewes. Sound transmission was assessed with a hydrophone placed near the ear of the fetus within the intact amnion. Sound pressures produced by th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90526-1
更新日期：1988-07-01 00:00:00
abstract：OBJECTIVE:Although most methods for selecting the sex of offspring by sorting spermatozoa are ineffective at shifting the ratio of Y- to X-containing cells, some commercial sources continue to offer such services. Our objective was to evaluate commercially "sorted" samples with use of dual-color fluorescence in situ hy...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70331-4
更新日期：1997-06-01 00:00:00
abstract：OBJECTIVE:Our purpose was to define the proliferative response and receptor status in the mammary glands of surgically postmenopausal macaques given hormone replacement therapy, equivalent for monkeys to that given women. STUDY DESIGN:Surgically postmenopausal adult female cynomolgus macaques (Macaca fascicularis) wer...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(96)70379-4
更新日期：1996-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to describe the characteristics and outcomes of obstetric patients who require mechanical ventilation. STUDY DESIGN:A review was conducted of obstetric patients who required mechanical ventilation and who received care at our institutions between 1990 and 1998. Data that were co...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.68
更新日期：2003-02-01 00:00:00
abstract：:The effects on complement in vitro by several commercial preparation of human chorionic gonadotropin (HCG) were investigated. These preparations were demonstrably anticomplementary and produced marked conversion of the third component of complement (C'3). However, detailed analyses showed that the anticomplementary ac...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90971-0
更新日期：1975-01-01 00:00:00
abstract：:To clarify the possible immunologic functions of the endometrium before implantation, supernatants from explant cultures of human endometrial tissues were examined for effects on mixed lymphocyte reaction and phytohemagglutinin M-stimulated cultures. Supernatants obtained from both proliferative and secretory phase en...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80095-9
更新日期：1987-10-01 00:00:00
abstract：OBJECTIVE:Our purpose was to assess the impact of glucocorticoid administration on the rate of regional anesthesia in women with hemolysis, elevated liver enzymes, and low platelet count (HELLP) syndrome. STUDY DESIGN:Maternal records of pregnancies with HELLP syndrome managed between April 1994 and December 1999 were...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.121074
更新日期：2002-03-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to evaluate the levels of matrix metalloproteinase 2 (MMP-2) in the precursors lesions and in the invasive cervical carcinoma and to quantify the immune reactive expression of MMP-2, using MMP-2 immunohistochemistry, in intraepithelial cervical neoplasias and in the invading cervical...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2003.12.017
更新日期：2004-05-01 00:00:00
abstract：:Twelve cases of retroperitoneal mucinous cystadenoma or mucinous cystadenocarcinoma in women have been reported in the literature. We report an additional case. The histogenesis of mucinous cystadenomas and mucinous cystadenocarcinomas in the retroperitoneum is not clear, but that these lesions may arise from teratoma...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90201-9
更新日期：1989-05-01 00:00:00
abstract：:To our knowledge, placental transfer of pentamidine has not been previously studied in vivo. In the present study, the pharmacokinetics of pentamidine were analyzed in late gestation (18 days) among Sprague-Dawley rats. Pentamidine's kinetics were assessed in the following maternal compartments over a 12-hour period i...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90541-x
更新日期：1991-03-01 00:00:00
abstract：:Vasoactive intestinal polypeptide, a neuropeptide with wide distribution in the central and peripheral nervous system, has a broad spectrum of biologic actions. The demonstration of vasoactive intestinal polypeptide containing nerve fibers within the female and male genital tract 17 years ago indicated a putative role...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(95)90506-5
更新日期：1995-05-01 00:00:00
abstract：BACKGROUND:Hyperglycosylated human chorionic gonadotropin, the predominant human chorionic gonadotropin variant secreted following implantation, is associated with trophoblast invasion. OBJECTIVE:To determine whether the initial serum hyperglycosylated human chorionic gonadotropin differs between ongoing and failed pr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2019.08.004
更新日期：2020-01-01 00:00:00
abstract：OBJECTIVES:The purpose of our study was to establish an in vitro tissue culture system to study eicosanoid metabolism in first-trimester trophoblastic tissue. Thromboxane A2, a potent vasoconstrictor, and prostacyclin, a potent vasodilator, were analyzed to evaluate their production in early pregnancy. STUDY DESIGN:Tr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(12)80036-6
更新日期：1992-10-01 00:00:00
abstract：OBJECTIVE:Both phosphorylated (p) mammalian target of rapamycin (mTOR) and protein S6 kinase 1 (p70S6K) are known to regulate protein synthesis and are affected during intrauterine growth restriction (IUGR). We studied the mTOR pathway during hyperthermia (HT)-induced IUGR in sheep. STUDY DESIGN:Beginning at 40 days g...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.07.031
更新日期：2009-12-01 00:00:00
abstract：OBJECTIVE:We sought to investigate the safety and efficacy of laparoscopic incidental appendectomy during laparoscopic surgery for endometrioma. STUDY DESIGN:We conducted a retrospective study of 356 patients undergoing laparoscopic surgery for endometrioma with appendectomy (appendectomy group, n = 172) or not (nonap...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.08.042
更新日期：2011-01-01 00:00:00
abstract：:Legal abortion-related mortality as reported to the Centers for Disease Control declined eightfold between 1972 and 1981. However, the causes of legal abortion mortality have changed over time. We reviewed all legal abortion-related deaths that occurred between 1972 and 1985 in the United States. We found that, althou...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90169-x
更新日期：1988-02-01 00:00:00
abstract：OBJECTIVE:Our aim was to determine the relative efficacy and complications of low-dose heparin and intermittent pneumatic calf compression for the prevention of postoperative venous thrombosis in patients undergoing surgery for gynecologic malignancy. STUDY DESIGN:Randomized trial comparing 107 patients treated with l...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0002-9378(93)90360-u
更新日期：1993-04-01 00:00:00
abstract：OBJECTIVE:Our purpose was to study the effects of long-term treatment with magnesium sulfate on hypoxic-ischemic brain damage in newborn rats. STUDY DESIGN:Seven-day-old rat pups (n = 120) were exposed to unilateral carotid artery ligation and 2 hours of hypoxia (8% oxygen in 92% nitrogen). Neuronal loss was evaluated...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.108343
更新日期：2001-01-01 00:00:00
abstract：:The biophysical profile has proved to be a valuable tool for the assessment of fetal well-being, independent of gestational age. Magnesium sulfate is commonly used as a tocolytic agent, yet relatively little is known about its effects on the biophysical activities of the fetus. To investigate the effects of magnesium ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90399-2
更新日期：1989-09-01 00:00:00
abstract：:Bacteriologic culture samples were taken from the cervix in three groups of 10 healthy, sexually active women using barrier contraception, oral contraceptives, or a levonorgestrel-releasing intrauterine contraceptive device. Culture samples for Candida albicans and Trichomonas vaginalis were taken, a cytologic vaginal...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90594-6
更新日期：1986-03-01 00:00:00
abstract：OBJECTIVE:The electrophysiologic properties of gap junctions between human myometrial smooth muscle cells were studied. STUDY DESIGN:Double whole-cell patch clamp recordings were made on pairs of cells from primary cultures of myometrial cells from women undergoing cesarean section. Macroscopic gap junction currents w...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70443-0
更新日期：1998-03-01 00:00:00
abstract：:Amniotic fluid creatinine, percentage of lipid-positive cells, and L/S ratio were determined on 285 samples from normal pregnancies and 222 samples from abnormal pregnancy states (Rh isoimmunization, diabetes, hypertensive disorders, intrauterine growth retardation, and hydramnios). In normal pregnancy the coefficient...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(76)90777-8
更新日期：1976-07-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to establish estimates for recurrence risk of preeclampsia based on gestational age at delivery of the first pregnancy complicated by preeclampsia and to determine whether interbirth interval, paternity, and body mass index (BMI) modify that risk in women with prior preeclampsia...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.11.058
更新日期：2008-07-01 00:00:00
abstract：OBJECTIVE:To characterize the serum metabolome of a primate model of in utero high-fat exposure. STUDY DESIGN:Serum from maternal and fetal (e130) macaque monkeys exposed to either a high-fat or control diet were analyzed by gas chromatography-mass spectrometry. Multivariate data analysis was performed to reduce the g...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.06.041
更新日期：2009-09-01 00:00:00
abstract：:Evidence from family and twin-based studies provide strong support for a significant contribution of maternal and fetal genetics to the timing of parturition and spontaneous preterm birth. However, there has been only modest success in the discovery of genes predisposing to preterm birth, despite increasing sophistica...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2017.12.009
更新日期：2018-03-01 00:00:00
abstract：:Twenty-four cases of fetal cystic hygroma colli were diagnosed by ultrasound. In two patients, the diagnosis was not confirmed at autopsy. Ten of these were cases of Turner's syndrome, one was a case of Turner's mosaicism, three had other aneuploidies, four had normal chromosomes, and six had a failed chromosome cultu...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90643-5
更新日期：1986-02-01 00:00:00
abstract：:Significant public health disparities exist surrounding teen and unplanned pregnancy in the United States. Women of color and those with lower education and socioeconomic status are at much greater risk of unplanned pregnancy and the resulting adverse outcomes. Unplanned pregnancies reduce educational and career oppor...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2016.02.017
更新日期：2016-06-01 00:00:00
abstract：:We have previously demonstrated in pregnant sheep that ritodrine infusion for 24 hours reduces myometrial beta-adrenergic receptor density and isoproterenol-stimulated adenylate cyclase activity. These receptor-associated changes were accompanied by an increasing inability of ritodrine to inhibit uterine contractility...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90575-3
更新日期：1988-12-01 00:00:00
abstract：:To investigate whether immune system activation may contribute to the tissue damage observed in salpingitis, we isolated peripheral blood mononuclear cells and quantitated production of the monocyte activation products tumor necrosis factor-alpha, interleukin-1, and interleukin-6. Unstimulated cells from 7 of 20 women...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90316-j
更新日期：1991-09-01 00:00:00
abstract：:It has recently been suggested that platelet-activating factor is involved in a number of processes associated with reproductive biology. We have demonstrated a critical role for this autacoid in the initiation and maintenance of parturition both in animals and man. In the present investigation, it has been demonstrat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)90610-3
更新日期：1992-04-01 00:00:00
