Publications by authors named "Crombleholme W"

Background: Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease associated with fibrosis and inflammation of the bile ducts. Its complications include symptoms from pruritis and fatigue to dominant strictures, cholangiocarcinoma and liver failure necessitating liver transplant. Due to its predominance in young males, little is reported regarding PSC and pregnancy.

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Objective: To determine the best measure of fetal nasal bone hypoplasia for trisomy 21 risk assessment in the second trimester.

Methods: This was a prospective, observational study performed at a single institution between February 2003 and December 2005. Fetuses with nasal bone length recorded sonographically between 16 and 20.

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Leptin, an adipocyte hormone involved in energy homeostasis, is important in reproduction and pregnancy. Questions yet to be addressed include the source of higher leptin during pregnancy and its relationship to pregnancy outcome and fetal growth. The objective of this study was to investigate the relationship between placental leptin gene expression, placental leptin protein concentration and maternal plasma leptin concentration among control pregnant women, women with pre-eclampsia and women with growth-restricted infants.

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Objective: System A amino acid transporter activity is reduced in placentas from small-for-gestational-age (SGA) compared to normal pregnancies. We compared the expression of the system A transporters between preeclamptic and control and between small-for-gestational-age and controls pregnancies.

Methods: We used placental samples from 18 preeclamptic pregnancies matched with 17 normal pregnancies and from 16 SGA pregnancies matched with 15 different normal pregnancies.

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Context: An excess of the soluble receptor, fms-like tyrosine kinase 1 (sFlt-1) may contribute to maternal vascular dysfunction in women with preeclampsia by binding and thereby reducing concentrations of free vascular endothelial growth factor and placental growth factor (PlGF) in the circulation. The putative stimulus for increased sFlt-1 during preeclampsia, placental hypoxia due to poor perfusion, is common to both preeclampsia and idiopathic intrauterine growth restriction. However, the latter condition occurs without maternal vascular disease.

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Preterm premature rupture of membranes (PPROM) is responsible for 30% of neonatal morbidity and mortality in premature gestations. We sought to evaluate pregnancy outcomes in PPROM managed uniformly with antibiotics and steroids, and to determine what maternal factors influence latency. This was a retrospective analysis of 134 patients at 24 to 31.

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Objective: Insulin resistance is greater and obesity is more common in women with preeclampsia. The Trp64Arg polymorphism in the beta(3)-adrenergic receptor is associated with these metabolic changes. This study investigated whether the Trp64Arg polymorphism is more common in women with preeclampsia.

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Objective: Alterations in endothelial function may explain the reduced risk of preeclampsia that is associated with smoking. We hypothesized that markers of endothelial function increase over pregnancy but decrease with smoking.

Study Design: Plasma samples were obtained throughout pregnancy from 63 primiparous women with normal pregnancies.

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Background: Epidemiological studies show a substantially reduced risk of breast cancer in adult daughters of preeclamptic pregnancies, and modest risk reductions have been demonstrated for mothers also. Alterations in pregnancy hormone concentrations, particularly lower in utero exposure to oestrogen, are hypothesized to mediate this association.

Methods: Pregnancy hormone concentrations were measured in maternal sera collected at hospital admission for labour and delivery from 86 preeclamptic and 86 uncomplicated, singleton pregnancies matched on length of gestation, maternal age, parity, and type of delivery.

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Objective: The objective of this study was to confirm that endothelial dysfunction is present in preeclampsia and absent in transient hypertension of pregnancy, and to determine whether the cardiovascular risk factor homocysteine is associated with the degree of endothelial dysfunction.

Methods: We measured cellular fibronectin (as a marker of endothelial injury) and total plasma homocysteine in samples collected at the time of admittance to labor and delivery in 17 women with preeclampsia (increased blood pressure, proteinuria, and hyperuricemia), 16 women with transient hypertension of pregnancy (only increased blood pressure), and 34 normal pregnant women. Each subject with preeclampsia was matched by prepregnancy body mass index, race, and gestational age at delivery to one subject with transient hypertension of pregnancy and two controls.

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We measured bound and free leptin levels in preeclamptic and matched normal pregnant and never-pregnant women to determine whether the free component of leptin is increased during pregnancy and further increased in preeclampsia. Two milliliters of serum was obtained from 18 normal and 18 preeclamptic patients matched by pre-pregnancy body mass index (BMI), and from 18 never-pregnant women matched by BMI with the pregnant groups. The sample was subjected to gel filtration using Sephadex G-100.

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Objective: We assessed tobacco exposure in nulliparous women with preeclampsia compared with that in control subjects by measuring urinary cotinine to confirm the reduced risk of preeclampsia associated with tobacco exposure during pregnancy.

Study Design: A case-control study group of 50 women with preeclampsia after 35 weeks of gestation and a group of 50 control subjects matched for gestational age, date of delivery, and body mass index were selected from the project database. Urine obtained on admission was assayed for cotinine.

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Objectives: To test the hypothesis that the common missense mutation of 5,10-methylenetetrahydrofolate reductase (MTHFR) (677 C to T, ala to val) is more prevalent among nulliparous preeclamptic women compared with control and transient hypertension of pregnancy patients. The correlation of the MTHFR T677/T677 genotype in mothers and fetuses was also investigated to test for possible maternal-fetal interactions. Lastly, possible differences in serum folate concentrations between control and preeclampsia patients and the possibility of a correlation between serum folate and MTHFR genotype were investigated as well.

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Objective: We tested the hypothesis that the independent risk factor for atherosclerosis of increased plasma homocysteine concentration is associated with the pregnancy syndrome of preeclampsia. We further hypothesized that increased plasma homocysteine concentration during pregnancy may advance endothelial dysfunction in preeclampsia by promoting oxidative stress.

Study Design: Antepartum blood samples were collected >/=6 hours after the last meal from 33 women with normal, uncomplicated pregnancies and from 21 women with preeclampsia.

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Latin and Asian-Pacific immigrants are the fastest growing new-comer groups in the U.S. contributing to 85% of immigration totals.

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Background: It is estimated that 1.5 million Americans are infected with the human immunodeficiency virus (HIV-1), and the consequences of HIV infection are a leading cause of death in women aged 15-44 yr. Thus, HIV-1 disease, or acquired immunodeficiency syndrome, occurs with increasing frequency in the parturient, and there is little information concerning the risks of regional anesthesia.

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Objective: To evaluate the efficacy and safety of ampicillin-sulbactam (3 g every 6 hours) in patients with pelvic inflammatory disease or postpartum endometritis using a randomized, comparative, multicenter study of parallel design.

Methods: Eligible patients with pelvic inflammatory disease were randomized to receive either ampicillin-sulbactam or cefoxitin (2 g every 6 hours) plus doxycycline (100 mg every 12 hours). Those with endometritis were randomized to ampicillin-sulbactam or clindamycin (900 mg every 8 hours) plus gentamicin (1.

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Objective: To test the hypothesis that among patients with a low amniotic fluid (AF) index, those who have a large cord-containing AF pocket will have a lower risk for adverse perinatal outcome than women with a small cord-containing pocket.

Methods: Gravidas with an antepartum AF index no greater than 5 cm were studied prospectively. The vertical diameter of the single largest cord-containing pocket, which was excluded from the calculation of the AF index, was measured.

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Background: Recombinant human erythropoietin has been approved for treatment of the anemia of renal failure since 1989, yet data regarding the safety and efficacy of this drug in pregnancy are limited. We used recombinant human erythropoietin to treat the anemia of renal disease in three pregnant women.

Cases: Nadir hematocrit values before initiation of erythropoietin were 19-23%.

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Risk assessment and antibody testing are potential modalities through which interventions to reduce heterosexual and perinatal transmission of human immunodeficiency virus (HIV) can occur. More than 98% of women attending inner-city adult gynecology, adult contraception and teen family planning clinics successfully completed self-administered HIV (AIDS) risk assessment questionnaires and received individual counseling, risk-reduction education and referral for antibody testing. Fourteen percent of the women (671/4,802) reported at least one HIV risk factor.

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Accurate rapid detection of maternal lower genital tract colonization with group B streptococci (GBS) in high-risk patients is essential for selective institution of intrapartum antibiotic treatment to reduce neonatal GBS infection. In this study, pure GBS isolates were used to evaluate five commercially available rapid tests in terms of speed, ease of use, and sensitivity. The products tested were Directigen, Equate, Bactigen, PathoDx, and Phadebact.

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A simple dot blot screening test for anti-HIV-1 IgA in infant sera was developed using recombinant HIV proteins. Ten control infants, 19 uninfected infants of seropositive mothers and 12 HIV culture positive infants were studied at 3 month and 18 month time points. Prior to IgG depletion of the serum samples, 11/12 (92%) of the infected infants, 2/19 (11%) of the uninfected and none of the control infants were anti-HIV IgA positive at 3 months of age.

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Current concepts of the pathogenesis of preeclampsia involve the generalized dysfunction of maternal vascular endothelial cells. We measured the endothelial isoform of fibronectin as a marker of endothelial cell injury throughout pregnancy in a prospective, case-control study. Nineteen women met strict criteria for the diagnosis of preeclampsia.

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A 38-year old pregnant woman presented with a polypoid tumor of the vagina. A biopsy revealed benign fibroepithelial polyps. Her pregnancy progressed normally, and she underwent an uncomplicated vaginal delivery.

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