Abstract:
OBJECTIVE:This study aimed to investigate the effect of maternal cigarette smoking on endothelial nitric oxide synthase (eNOS) activity and concentration in the fetal umbilical vein, and subsequently, to relate the findings to the size of the newborn. STUDY DESIGN:Forty-four nonsmoking and 30 smoking women were included in the study. Umbilical vein endothelial cells were isolated immediately after delivery. The eNOS activity was determined in the samples by the conversion of (14)C-L-arginine to (14)C-L-citrulline, and the eNOS concentration was determined by a human eNOS immunoassay. RESULTS:Newborns of smokers had a lower weight (P=.014) and a smaller head circumference (P=.002) than those newborns of nonsmokers. The eNOS activity in fetal umbilical veins exposed to maternal smoking was 40% lower (P=.006), and the eNOS concentration 32% lower (P=.053) in newborns of smokers than in nonsmokers. CONCLUSION:The findings suggest that maternal smoking reduces nitric oxide production in the fetal circulation. This may contribute to retarded fetal growth caused by the subsequent endothelial dysfunction with reduction of dilatory capacity of the vessels.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Andersen MR,Walker LR,Stender Sdoi
10.1016/j.ajog.2003.12.040subject
Has Abstractpub_date
2004-07-01 00:00:00pages
346-51issue
1eissn
0002-9378issn
1097-6868pii
S0002937804000183journal_volume
191pub_type
杂志文章abstract:OBJECTIVE:Our purpose was to examine conservative conization as treatment for microinvasive carcinoma of the cervix with depth of invasion < 3 mm. STUDY DESIGN:Twelve patients with microinvasive carcinoma of the cervix underwent cervical conization under colposcopic guidance followed by careful observation. RESULTS:T...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(97)70394-6
更新日期:1997-05-01 00:00:00
abstract::A study of fetal activity was undertaken as the first step in a series of physiologic fetal movement studies. A simple, safe, noninvasive, clinically applicable method for studying fetal movement with a tocodynamometer is described. Four basic types of fetal movement have been seen and defined in terms of their durati...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90467-1
更新日期:1976-09-01 00:00:00
abstract:OBJECTIVE:The goal of the study was to examine risks in pregnancy in patients with Ebstein anomaly. STUDY DESIGN:Data were examined retrospectively for 13 patients (27 pregnancies, 21 live births) with Ebstein anomaly during pregnancy who were treated at our institution from 1985 to 2011. The associated anomalies in t...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.07.005
更新日期:2013-11-01 00:00:00
abstract::We performed a case-control study of the effect of exposure to Chlamydia trachomatis on the risk for tubal pregnancy. Sixty women with tubal pregnancies and 60 matched control women with normal second-trimester intrauterine pregnancies were studied. Cases were more likely than controls to have detectable antichlamydia...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(88)80177-7
更新日期:1988-10-01 00:00:00
abstract::Although generally safe, combined oral contraceptives (COCs) are associated with risks, including an estimated 2-fold increased relative risk of cardiovascular events. For most women taking COCs for contraception, absolute cardiovascular risks are very low, and the overall risks of COCs are outweighed by the risks of ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2012.01.037
更新日期:2013-01-01 00:00:00
abstract::Intervillous placental blood flow and indices of fetal heart rate variability were measured from seven healthy pregnant women in the last trimester of pregnancy, once before and twice after smoking one cigarette. A blood flow reduction was observed in seven, a rise in five, and no change in two measurements. When inte...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(83)90975-4
更新日期:1983-08-15 00:00:00
abstract:OBJECTIVE:We sought to evaluate the efficacy of maternal posturing during labor on the prevention of persistent occiput posterior (OP) position. STUDY DESIGN:We conducted a randomized trial including 220 patients in labor with a single fetus in documented OP position. Main outcome was the proportion of anterior rotati...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ajog.2012.10.882
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVE:We sought to determine the interventions utilized by maternal-fetal medicine specialists in the prediction and prevention of preterm labor in higher-order multiple (HOM) gestations. STUDY DESIGN:Online questionnaires and email surveys were sent to all the maternal-fetal medicine specialists in Canada (n=122)...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2014.12.031
更新日期:2015-05-01 00:00:00
abstract::Severe obstructive sleep apnea, a disturbance of sleep resulting from intermittent periodic obstruction of the upper airway, was diagnosed after cardiotocography during which the external tocodynamometer disclosed a pattern initially thought to represent uterine activity. In spite of this obstructive sleep apnea with ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90354-t
更新日期:1991-11-01 00:00:00
abstract:OBJECTIVE:Our purpose was determine whether there are ethnic differences in vaginal colonization with organisms reputed to be associated with preterm delivery. STUDY DESIGN:In seven urban medical centers in the United States from 1984 to 1989, 13,747 predominantly low-socioeconomic-status women at 23 to 26 weeks' gest...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70617-8
更新日期:1996-05-01 00:00:00
abstract:OBJECTIVE:Our aim was to study the association between severity of pelvic inflammatory disease at laparoscopy and the probability of achieving a live birth, while accounting for subsequent episodes of pelvic inflammatory disease. STUDY DESIGN:Beginning in 1960 a cohort of 1288 women in Lund, Sweden, who had clinical s...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(98)70534-4
更新日期:1998-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to compare gestational trophoblastic disease incidence rates with the use of population-based data. STUDY DESIGN:All incident cases between 1973 and 1997 and live birth, pregnancy, and women at risk were tabulated with the use of data that were derived from the New Mexico Tumor ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2003.39
更新日期:2003-02-01 00:00:00
abstract::In a large randomized, controlled study of fetal heart rate monitoring with either continuous electronic fetal heart monitoring or auscultation at specified intervals, only one pattern of deviation in the fetal heart rate correlated significantly with neonatal neurologic examinations at 0 to 48 hours and 72 hours to 1...
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(91)90700-2
更新日期:1991-05-01 00:00:00
abstract::We describe a study designed to assess the role of infertility diagnosis in differentiating participants in an in vitro fertilization program on psychological variables. Three hundred forty-eight in vitro fertilization candidates representative of five diagnostic categories (tubal problems, endometriosis, male factor,...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90229-3
更新日期:1988-05-01 00:00:00
abstract::Plasma lipoproteins constitute a complex lipid transport system. Very low-density lipoproteins transport triglycerides to peripheral tissues, whereas low-density lipoproteins are the main carriers of cholesterol. Cholesterol transport in low-density lipoprotein enters body cells by way of "low-density lipoprotein rece...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/0002-9378(90)90571-n
更新日期:1990-07-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the prevalence of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) in older women who are at increased risk of sexually transmitted infections (STIs) based on community STI prevalence. Additionally, we explored the associations between STI risk factors and C...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2014.06.051
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the normal beta-human chorionic gonadotropin change within 24 hours after a medical abortion. Because a medical abortion creates a "miscarriage," these data can represent the serum beta-human chorionic gonadotropin changes that would occur with a complete spontaneous...
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/s0002-9378(96)70463-5
更新日期:1996-02-01 00:00:00
abstract::The pulsatility index of the fetal umbilical arteries was evaluated in 14 high-risk pregnant patients delivered by cesarean section between 30 and 35 weeks of gestation. Transabdominal cord sampling by ultrasonic guidance was performed on 10 of these patients. Umbilical arterial and venous blood was obtained in all pa...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90418-8
更新日期:1988-11-01 00:00:00
abstract::A randomized prospective double-blind study was performed to evaluate the efficacy of a transdermal therapeutic system delivering clonidine in the treatment of menopausal hot flashes. Frequency, severity and duration of the flushing attacks before and during the 8-week treatment period were evaluated. The reduction in...
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(87)90050-0
更新日期:1987-03-01 00:00:00
abstract:OBJECTIVE:Epidemiologic studies support the hypothesis of a dose-related risk of epithelial ovarian cancer with perineal talc usage exposure. Frequency and duration of talc has not been previously correlated with ovarian talc content. STUDY DESIGN:Ovaries were studied from 24 women undergoing incidental oophorectomy w...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70597-5
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:Open spina bifida is a major congenital anomaly with an estimated incidence of <1 in 1000. The diagnosis of open spina bifida is usually made during the second trimester, but first-trimester detection rate of spina bifida is increasingly reported. Recently, the mean choroid plexus length to occipitofrontal d...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2020.08.058
更新日期:2020-08-22 00:00:00
abstract::Two fetuses with obstructive uropathy characterized by striking oligohydramnios and dilatation of the urinary collecting system were identified by ultrasound and treated by percutaneous insertion of a long-term vesicoamniotic silicone rubber shunt. Both fetuses were less than 16 weeks' gestation at diagnosis and less ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(83)90685-3
更新日期:1983-04-01 00:00:00
abstract:OBJECTIVE:The risk of perinatal death associated with labor after previous cesarean section appears higher than with a repeated cesarean section. On the other hand, repeated cesarean sections are associated with increased maternal morbidity and mortality from placental pathologic conditions (previa or accreta) on subse...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/s0002-9378(03)00833-0
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVE:Gestational diabetes mellitus (GDM) is thought to modify the pattern of placental transcriptome. In a microarray study and a confirmatory quantitative real-time reverse transcription-polymerase chain reaction study, we investigated global placental gene expression in GDM. STUDY DESIGN:Ribonucleic acid was ex...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.08.022
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to determine whether an individualized growth standard (IS) improves the identification of preterm small-for-gestational-age (SGA) neonates at risk of developing moderate/severe cerebral palsy (CP) or death. STUDY DESIGN:This study was a secondary analysis of data from a random...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.06.007
更新日期:2013-10-01 00:00:00
abstract:OBJECTIVE:Our purpose was to implement and evaluate an orientation program for residents, focusing on outpatient clinical skills. STUDY DESIGN:Eleven of 12 residents participated in a clinical skills orientation program immediately preceding the academic year. The skill stations included evaluation of abnormal uterine...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/s0002-9378(03)00624-0
更新日期:2003-09-01 00:00:00
abstract::This article is from the "To The Point" series prepared by the Association of Professors of Gynecology and Obstetrics Undergraduate Medical Education Committee. The purpose of this review was to provide an overview of the importance of well-being in medical education. A literature search was performed by a Reference L...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2019.05.012
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to analyze lymphatic spread to pelvic, parametrial, and paraaortic lymph nodes in patients with cervical cancer. STUDY DESIGN:We reviewed 619 patients with invasive cervical cancer treated by radical abdominal hysterectomy and systematic pelvic or pelvic and paraaortic lymphadenecto...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2007.09.053
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to determine whether adrenomedullin, a hypotensive peptide, decreases vasomotor tone in fetoplacental vasculature that has been constricted with the thromboxane sympathomimetic U46619. STUDY DESIGN:The fetoplacental vascular beds of 20 perfused human placental cotyledons were vasoco...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.108071
更新日期:2000-12-01 00:00:00
abstract::To determine whether anesthesia lowers fetal oxygen consumption, sodium pentobarbital (10 mg/kg) was given intravenously to seven chronically instrumented pregnant ewes (123 to 144 days' gestation). Oxygen consumption fell by 23% in association with a rise in fetal vascular PO2. Fetal breathing movements were abolishe...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(86)90628-9
更新日期:1986-03-01 00:00:00