Abstract：
:Fetal plasma amino acid concentrations were obtained by cordocentesis at midgestation in 11 normal (appropriate for gestational age) fetuses and at late gestation in 12 small-for-gestational-age fetuses, and at cesarean section in 14 normal term infants. In normal fetuses total molar amino acid concentrations and fetal/maternal total molar concentration ratios did not change significantly between the second and third trimesters. Fetal and maternal concentrations of most amino acids were significantly correlated at both midgestation and late gestation. Small-for-gestational-age fetuses had significantly lower concentrations of total alpha-aminonitrogen; this was mainly because of a reduction of the branched chain amino acids valine, leucine, and isoleucine, and of lysine and serine. Maternal arterial concentrations of phenylalanine, arginine, histidine, and alanine were elevated in small-for-gestational-age pregnancies. Thus there are only minor changes in amino acid concentrations between midgestation and late gestation in normal fetuses with a constant fetal/maternal ratio. In small-for-gestational-age infants a significant reduction in alpha-aminonitrogen and in most essential amino acids was demonstrable in utero weeks before delivery.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Cetin I,Corbetta C,Sereni LP,Marconi AM,Bozzetti P,Pardi G,Battaglia FCdoi
10.1016/0002-9378(90)90860-asubject
Has Abstractpub_date
1990-01-01 00:00:00pages
253-61issue
1eissn
0002-9378issn
1097-6868pii
0002-9378(90)90860-Ajournal_volume
162pub_type
杂志文章abstract：:Primary prevention of sexually transmitted diseases has received little emphasis in control programs. To evaluate the effectiveness of prevention strategies, we reviewed the world's literature on this topic. Use of condoms and spermicides greatly reduces the risk of gonorrhea, and barrier methods are practical and acc...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,评审
doi：10.1016/0002-9378(86)90108-0
更新日期：1986-07-01 00:00:00
abstract：:We retrospectively studied 48 pairs of twin gestations delivered between 24 and 28 weeks' gestation from 1975 to 1986 at Vanderbilt University Medical Center. The incidence of fetofetal transfusion syndrome was 20%, more than double the incidence previously reported in large series of twin deliveries that encompassed ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90644-3
更新日期：1989-11-01 00:00:00
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' ges...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90305-b
更新日期：1991-09-01 00:00:00
abstract：OBJECTIVE:We sought to characterize reports to the Vaccine Adverse Event Reporting System (VAERS) of pregnant women who received tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap). STUDY DESIGN:We searched VAERS for reports of pregnant women who received Tdap from Jan. 1, 2005, through J...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.05.006
更新日期：2012-07-01 00:00:00
abstract：:Charts from 482 singleton pregnancies undergoing cerclage placement in patients over a 6-year period were reviewed. Cervical dilatation at time of surgery, number of previous spontaneous losses, and gestational age at placement were key determinants of outcome. The most frequent complication, premature rupture of the ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90283-w
更新日期：1991-09-01 00:00:00
abstract：:The effect of surgically lengthening the rabbit oviduct was investigated. In the study group, a lengthened fallopian tube was created by division of the left fallopian tube at the ampullary-isthmic junction and the right fallopian tube at the uterotubal junction. The proximal left tube and the entire right tube were m...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90019-4
更新日期：1983-11-01 00:00:00
abstract：BACKGROUND:A rapid increase in restrictive abortion legislation in the United States has sparked renewed interest in self-managed abortion as a response to clinic access barriers. Yet little is known about knowledge of, interest in, and experiences of self-managed medication abortion among patients who obtain abortion ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2020.02.026
更新日期：2020-08-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the effects of raloxifene on endothelial function in healthy, postmenopausal women. STUDY DESIGN:This was a randomized, double-blind, placebo-controlled crossover trial. Subjects (n = 19; mean age, 61 years) underwent endothelial function testing at baseline and aft...
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：10.1067/mob.2003.28
更新日期：2003-02-01 00:00:00
abstract：:While observation of fetal breathing movements has been used in fetal assessment, quantitative parameters (percent time spent in breathing [incidence], breath rate, or breath rate variability) have not been adequately evaluated as predictive tools. We examined 283 patients with high-risk pregnancies between 32 and 42 ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90112-9
更新日期：1989-01-01 00:00:00
abstract：:Results are presented of multicenter studies on the intrauterine delivery of 0.6 ml methyl cyanoacrylate with the FEMCEPT device (BioNexus Inc., Raleigh, North Carolina) for the purpose of causing permanent obstruction of the fallopian tubes. The studies included 1279 women and were conducted under several different p...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(87)90373-5
更新日期：1987-04-01 00:00:00
abstract：:Postoperative morbidity after hysterectomy was prospectively studied in 229 consecutive patients in our departments. The incidence of alcohol abuse (greater than 60 gm of alcohol daily) and social drinking (between 25 and 60 gm of alcohol daily) was 6.5% for each. When compared with the social drinkers and the control...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91695-7
更新日期：1992-02-01 00:00:00
abstract：:This study examined the effects of human chorionic gonadotropin, adrenocorticotropin, human luteinizing hormone, and mouse epidermal growth factor on growth (thymidine incorporation) and steroidogenesis (dehydroepiandrosterone sulfate production) of human fetal zone adrenal cells in monolayer culture. Two preparations...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(87)90077-9
更新日期：1987-03-01 00:00:00
abstract：:Thirteen women with infertility thought due to anovulation were treated with LRH. Etiologic diagnoses of amenorrhea included hypothalamic or "idiopathic" and PCOD. All patients had normal gonadotropins and otherwise normal endocrinologic and infertility evaluations; none had ovulated with clomiphene. Patients were stu...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/0002-9378(79)90819-6
更新日期：1979-12-01 00:00:00
abstract：:A rapid bedside test has been devised that enables an untrained observer to predict (p less than 0.001) when amniotic fluid will be greater than or equal to 0.15 at an optical density of 650 nm, lecithin/sphingomyelin ratio will be greater than or equal to 2.0, or when phosphatidylglycerol will be present. By a visual...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90366-y
更新日期：1991-11-01 00:00:00
abstract：:Postoperative adhesions occur in 60% to 90% of patients undergoing major gynecologic surgery and represent one of the most common causes of intestinal obstruction in the industrialized world. The incidence of adhesion-related intestinal obstruction after gynecologic surgery for benign conditions without hysterectomy i...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(94)70170-9
更新日期：1994-05-01 00:00:00
abstract：:Posterior vaginal repair is often poorly understood and ineffectively performed. The goals of reconstructive surgery emphasize relief of symptoms and restoration of normal anatomic relationships and of function. A useful method to preoperatively determine posterior vaginal wall weakness is outlined along with a surgic...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90503-j
更新日期：1991-03-01 00:00:00
abstract：OBJECTIVE:Our purpose was to determine the effectiveness of transabdominal amnioinfusion before induction of labor in reducing the incidence of fetal distress in pregnancies with oligohydramnios at term. STUDY DESIGN:Between June 1991 and September 1994 primiparous women with ultrasonographic evidence of oligohydramni...
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)70163-1
更新日期：1996-08-01 00:00:00
abstract：:Pancervicovaginal (Papanicolaou) smears exhibiting pseudomycilial-like clumps of organisms obtained from 35 women employing IUD's were studied by direct immunofluorescent technique for identification of A. israelii and A. naeslundi. In every case the specific fluorescence was achieved with species-specific antiserum a...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90604-x
更新日期：1978-06-01 00:00:00
abstract：OBJECTIVE:Our purpose was to evaluate the role of fetal ultrasonography in prenatal detection of trisomy 21. STUDY DESIGN:A retrospective study was performed on all cases of trisomy 21 diagnosed prenatally or postnatally between January 1990 and December 1993 in the Jerusalem metropolitan area. Our program of prenatal...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70623-4
更新日期：1998-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this analysis was to study the relationship between an increasing cesarean delivery rate and term neonatal seizures and peripartum deaths. STUDY DESIGN:This was a retrospective analysis of annually collated institutional data on cesarean delivery and perinatal outcome. RESULTS:Of 77,350 women...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.06.102
更新日期：2005-01-01 00:00:00
abstract：:The effect of prostaglandin (PG) F2 alpha on corpus luteum function in normal women with regular menstrual cycles was investigated. 21 women were recruited as volunteers and PGF2 alpha was infused for 8 hours (25 mgm). Infusions were given between Day 14 and 27 of the luteal phase of the cycle, with Day 14 arbitrari...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(72)90616-3
更新日期：1972-10-01 00:00:00
abstract：:Decisions in regard to the management of patients with premature rupture of the membranes depend on the relative risks of prematurity, infection, and hypoxia for the fetus or neonate and infection and cesarean section for the mother. These risks vary primarily with gestational age. Because of the many variables and ne...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(85)90369-2
更新日期：1985-04-15 00:00:00
abstract：:Endometrial biopsies at varying times in the menstrual cycle were obtained from 30 healthy women (16-41 years) to be used as controls, and 19 women (16-36 years), who wore an IUD (Mazlin spring, Lippes loop, or Birnburg bow) for from 5 months to 4 years, in order to study histological changes in the endometrium in th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(70)90508-9
更新日期：1970-04-15 00:00:00
abstract：OBJECTIVE:We used the Danish National Birth Cohort to estimate the effect of shift work on the duration of pregnancy and birth weight. STUDY DESIGN:In the Danish National Birth Cohort (1998-2001), we identified women (and their singleton births): 32465 women with daytime work, 1038 women with fixed evening work, 400 w...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2003.12.002
更新日期：2004-07-01 00:00:00
abstract：OBJECTIVE:We sought to determine the impact of a collagen scaffold on the healing response after simulated birth injury in a rodent model. STUDY DESIGN:A total of 52 virgin animals were divided into the following groups: control (n = 18), injured untreated (n = 18), and injured treated with porcine small intestinal su...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.04.003
更新日期：2010-06-01 00:00:00
abstract：:286 patients between ages 16-48 with cystic adnexal masses were treated with estrogen and progesterone for 6 weeks. Persistence of the adnexal mass occurred in 81 patients and surgical exploration was done. All patients explored with an ovarian enlargement had an ovarian neoplasm causing the enlargement. There were...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(73)90913-7
更新日期：1973-06-15 00:00:00
abstract：:A 31-year-old nulligravid patient presented with irregular menses, severe hirsutism, and infertility. Evaluation revealed marked increases of serum androstenedione and testosterone levels and a possible ovarian mass. At operation a cystic teratoma was removed from the left ovary and bilateral wedge resection revealed ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90706-4
更新日期：1986-06-01 00:00:00
abstract：:A new colposcopic sign (sharpness of peripheral margins) was graded into three objective categories representing subclinical papillomaviral infection, lower grade dysplasia, and grade 3 cervical intraepithelial neoplasia. Colposcopic features were prospectively recorded in 72 women and then correlated with histologic ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(85)80244-1
更新日期：1985-11-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to compare symptomatic and anatomic outcomes 1 year after robotic vs abdominal sacrocolpopexy. STUDY DESIGN:Our retrospective cohort study compared women who underwent robotic sacrocolpopexy (RSC) with 1 surgeon to those who underwent abdominal sacrocolpopexy (ASC) as part of th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2012.01.035
更新日期：2012-05-01 00:00:00
abstract：:In the rabbit model of the ovarian hyperstimulation syndrome, animals given ovine prolactin with human menopausal gonadotropins (hMGs), as compared to animals receiving hMGs alone, demonstrated an increase in the formation of ascitic fluid, a decrease in mean plasma estradiol, and an increase in the mean plasma proges...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90690-7
更新日期：1983-04-01 00:00:00
