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Jamal H S - - 2000
OBJECTIVE: To combine 2 methods; spermatid isolation and in-vitro maturation to improve their quality and enhance their ability of fertilization. METHODS: A discontinuous Percoll gradient was used to separate immature germ cells. Co-culture with Vero cells was attempted to convert round spermatids into more mature forms. In total 87 spermatids ...
Gisbert J P JP Department of Gastroenterology, University Hospital of La Princesa, Madrid, Spain. - - 2000
To perform a meta-analysis of studies comparing twice daily, one-week triple therapy with a proton pump inhibitor, clarithromycin (C) and amoxycillin (A) (PCA) vs. those using proton pump inhibitor, clarithromycin and a nitroimidazole (N) (PCN) for H. pylori eradication. Comparative randomized trials of PCA vs. PCN were included. PubMed database ...
Arens Y - - 2000
OBJECTIVES: To characterize changes in myometrial contractile proteins and myosin heavy chain (MHC) isoforms during ovine fetal and neonatal development and after pregnancy. We hypothesized that ovine myometrium demonstrates progressive cellular differentiation and maturation which begins in utero and extends into the postnatal period, and that pregnancy causes further cellular ...
Emery R J - - 2000
A comprehensive range of cytokinins (CK) was identified and quantified by gas chromatography-mass spectrometry in tissues of and in xylem and phloem serving developing white lupine (Lupinus albus) fruits. Analyses were initiated at anthesis and included stages of podset, embryogenesis, and seed filling up to physiological maturation 77 d post ...
Edwards R K - - 2000
OBJECTIVE: To evaluate the performance of the TDx/TDxFLx fetal lung maturity II assay (Abbott Laboratories; Abbott Park, IL) on amniotic fluid (AF) specimens collected vaginally from women with preterm premature rupture of membranes (PROM). METHODS: We reviewed charts of patients with preterm PROM treated at Shands Hospital at the University ...
Sergi C - - 2000
From 12 weeks of gestation on, a progressive remodeling of the human primitive biliary structure or ductal plate occurs. A few parts of the primitive biliary structure (peripheral tubular or ductular structures) dilate, migrate toward the center of the portal tract, and transform into mature bile ducts, while most of ...
McElrath T F TF Department of Obstetrics and Gynecology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, - - 2000
The purpose of this study was to quantify differences in indexes of pulmonary maturity between singleton and twin gestations by means of the TDx fetal lung maturity assay. We identified records of a total of 830 singleton and twin pregnancies not complicated by diabetes and delivered between 28 and 37 ...
Chauhan S P - - 2000
To determine if sonographic examination of fetus can be readily utilized to predict a mature lecithin/sphingomyelin (L/S) ratio among twins and singletons. Twins (n = 36) undergoing amniocentesis for assessment of pulmonary maturity were matched with singleton (1:2) for maternal demographics, gestational age (GA), and indications for procedure. At the ...
Kirchengast S - - 2000
The impact of maternal age at menarche on newborn size was tested using data from 4,996 single births taking place at Vienna, Austria, between 1985 and 1995--so-called teenager pregnancies were excluded from the present analyses. All women experienced pregnancies between the ages of 19 to 42 years. Maturational time was ...
Osman M P - - 2000
The Adam and Eve story is construed as having an organizing function that facilitates the analytic understanding of certain patients. In this interpretation, the story epitomizes a psychodynamic in which progressive growth, with separation and individuation, of the young is experienced as perilous--not only to them, but also correspondingly to ...
Henry J G - - 2000
The present study was conducted to investigate the effectiveness of the sulphate-reduction pathway in the anaerobic treatment of landfill leachate. The effects of several COD/SO4 ratios (keeping COD constant) and loadings on anaerobic filter performance were studied and compared with the results from anaerobic filters which followed the methanogenic pathway. ...
Winn H N - - 2000
OBJECTIVE: This retrospective study compared the fetal lung maturity biochemical profile of patients having preeclampsia with that of patients having preterm labor. STUDY DESIGN: Amniotic fluid was obtained by transabdominal amniocentesis in 90 patients, 59 patients with preterm labor (PTL) and 31 patients with preeclampsia (PRE). Pregnancies with fetal growth ...
Chen Y - - 1999
Intensity and threshold dilution ratio are two important indices for odor control of swine buildings. Although odor threshold dilution ratio is a widely used index to describe an odor, it should be related to intensity to be more useful. A method was proposed to measure both indices simultaneously by using ...
Whitworth N S - - 1999
OBJECTIVE: This study was undertaken to evaluate the correspondence in fetal lung development between diamniotic twins. STUDY DESIGN: Lecithin/sphingomyelin ratios were determined for amniotic fluid specimens collected from each sac in 58 diamniotic twin pregnancies. RESULTS: Overall, the lecithin/sphingomyelin ratios of twin A and twin B and those of the ...
Amiel-Tison C - - 1999
An evaluator blinded to gestational age (GA) assessed a cohort of 397 singletons born at between 37 and 41 week's gestation, by looking at 11 criteria exploring neurological maturity and 12 criteria exploring physical maturity. The analysis of correlation coefficients shows various degrees of association between GA and each of ...
Heimberger C M - - 1999
In insulin dependent diabetic (IDDM) gestations, fetal pulmonary maturity is delayed in the presence of suboptimal glycemic control. Serum glycosylated hemoglobin (HbA1c) provides a means of assessing glycemic control. We evaluated maternal HbA1c in IDDM pregnancies at term undergoing amniocentesis for lung maturity to establish if euglycemia is associated with ...
Egberts J - - 1999
OBJECTIVE: In cross-sectional studies, the variability between women may mask or deny gestational changes, related to the nitric oxide-cyclic GMP system. Therefore, we analyzed longitudinally as markers of this system, the urinary levels of nitrite+nitrate (NOx), cyclic guanosine 3',5' monophosphate (cGMP) and of the inhibitor of nitric oxide synthase, dimethylarginine ...
Baker L A - - 1998
During human embryonic development, the ureteric bud, a simple epithelial tube that arises from the Wolffian duct, initiates a cascade of events which results in the formation of the metanephros and its collecting system. In this review, the anatomic and molecular basis of ureteric development are discussed. Although it is ...
Loret de Mola J R - - 1998
OBJECTIVE: To correlate fetal morphometrics with studies of fetal lung maturity. STUDY DESIGN: One hundred six patients undergoing amniocentesis for fetal lung maturity studies were examined prospectively. Eighty-four patients were normal (79%), and 22 were diabetic (21%). Fetal morphometrics were obtained prior to amniocentesis. The fetal colon and placenta were ...
Hanley K - - 1998
The stratum corneum (SC) matures during late gestation in man and other mammals. Using the fetal rat as an experimental model, we have previously shown that glucocorticoids given in pharmacologic doses accelerate fetal SC maturation and barrier formation. To determine whether glucocorticoids are required for normal SC maturation, we examined ...
Piazze J J - - 1998
OBJECTIVE: To assess fetal lung maturity tests in hypertensive pregnancies and to examine the effect of glucocorticoid therapy. METHODS: In a cohort study involving 68 pregnant women with hypertension, 34 received antenatal betamethasone before amniocentesis and 34 did not. Controls were 68 women with uncomplicated pregnancies, matched for gestational age ...
Hilton G G - - 1998
Strip loins from 354 female bovine carcasses, selected to represent 30 skeletal maturity (A, B, C, D, and E) x marbling score (SA/MA/AB, MD, MT, SM, SL, and TR/PD) subclasses, were used to evaluate current and alternative systems for classifying cow carcasses into expected-palatability groups. Strip loins were vacuum-packaged, stored ...
Momma K - - 1998
Maturation of fetal ductus arteriosus is associated with increased constriction in response to maternally administered indomethacin. Recently retinoic acid has been shown to be important in development of the fetal ductus arteriosus. To determine whether retinoid might be of value in the treatment of patent ductus arteriosus in premature infants, ...
Piper J M - - 1998
Fetuses born after pregnancies complicated by diabetes display delayed pulmonary maturation as measured by the delayed appearance of biochemical indicators of pulmonary maturity (phosphatidylglycerol, lecithin/sphingomyelin ratio) and by the occurrence of hyaline membrane disease even in term gestations. We tested the hypothesis that poor maternal glycemic control is associated with ...
Vergnes H A - - 1998
A kinetic parameter (the Vm/Km ratio), an index of neutrophil alkaline phosphatase catalytic efficiency, was studied in 36 women with normal pregnancies at 16-20 weeks' gestation. On each blood sample, determinations were achieved on enzyme extracted from maternal granulocytes by monitoring the phosphohydrolytic activity at 400 nm on a spectrophotometer ...
Piazze J J - - 1998
The influence of amniotic fluid (AF) volume on common fetal lung maturity (FLM) indices was evaluated. Cases diagnosed with altered AF volume as estimated by ultrasound (n = 71; polyhydramnios = 33, oligohydramnios = 38) were matched to controls by: gestational age (GA) at amniocentesis, GA at delivery, neonatal weight, ...
Peek M J - - 1997
This prospective cross-sectional (10 women on each occasion) and longitudinal (20 women) study investigated activated protein C (APC) ratio in normal pregnancy. The APC ratio was measured at booking, 20, 30 and 36 weeks of gestation, and compared with a sample of normal nonpregnant women. No significant difference was found ...
Bokarewa M I - - 1997
The response to activated protein C (APC) was investigated in 28 healthy women, non-carriers of the Arg506-Gln mutation in factor V, throughout pregnancy (gestation weeks 12, 20, 28, 32 and 37) and after the delivery. A suppression of APC response was observed which reached lowest values by week 28 (nAPC-ratio ...
Lauria M R - - 1997
OBJECTIVE: In utero passage of meconium may represent a response to hypoxic stress or a normal maturational event. When found during the third trimester, one may be tempted to use its presence as prima facie evidence of fetal lung maturity. The purpose of our study was to determine the frequency ...
Liu K Z - - 1997
OBJECTIVE: The aim of this study was to attempt to correlate the quantitative data obtained from the near-infrared (near-IR) spectra of amniotic fluid with the lecithin/sphingomyelin (L/S) ratio determined from thin layer chromatographic analysis on the same samples, in order to establish the feasibility of near-IR spectroscopy as an alternate ...
Ottong S E - - 1997
In an attempt to estimate dopamine production in psychotic patients, pHVA and pMHPG were assessed from morning blood samples of fasting, neuroleptic-free patients. The (pHVA/pMHPG) ratio was bimodally distributed. The upper mode delineated a cluster of psychotics with excess central dopamine activity. Despite a comparable duration of illness, the high ...
Jensen A - - 1996
The question whether asphyxia may be harmful to the brain of the fetus and newborn is largely related to the gestational age. Experimental studies on chronically prepared fetal sheep suggest that the resistance to asphyxia associated with maturity is not only related to structural changes in the fetal brain during ...
Hanlon-Lundberg K M - - 1996
OBJECTIVE: To determine the effect of maternal cocaine exposure on fetal lung maturity as measured by surfactant-albumin ratios determined by the TDx-FLM test. METHODS: A case-control study design was used to compare fetal lung maturity as assessed by a surfactant-albumin ratio assay (TDx-FLM) in amniotic fluid (AF) obtained from women ...
Freire C A - - 1995
The participation of neuroendocrine factors present within the central nervous system in the regulation of hemolymph free amino acid (FAA) concentrations was examined in the freshwater shrimp Macrobrachium olfersii. Test shrimps were injected intramuscularly with homogenates prepared from the eyestalks (ES), ventral nerve cord (VNC), supraesophageal (SEG), or thoracic ganglia ...
Jana N - - 1995
In a prospective study, the accuracy of placental grade in predicting pulmonary maturity was evaluated in 50 cases of pregnancy-induced hypertension (PIH) between 28 and 41 weeks of gestation. Pulmonary maturity was measured by lecithin/sphingomyelin (L/S) ratio and phosphatidylglycerol (PG) in amniotic fluid and by clinical development of respiratory distress ...
Khong T Y - - 1995
AIMS: To evaluate the ability of five experienced perinatal pathologists to assess placental maturity reliably by histology. METHODS: Twenty four haematoxylin and eosin slides, six each from placentas of 27, 31, 35, and 39 weeks' gestation, were circulated to five pathologists on three separate occasions. The slides were labelled with ...
Ruiz-Budría J - - 1995
The lecithin/sphingomyelin (L/S) ratio after cold acetone precipitation is widely used to predict fetal lung maturity. The separation of saturated lecithin, the main component of surfactant, is the basis for using the precipitation procedure but there is still a controversy as to whether cold acetone precipitable lecithin can be equated ...
Wilcox D T - - 1995
Abnormal development of the lung in congenital diaphragmatic hernia (CDH) results in a dysfunctional surfactant system. In premature newborns at risk for respiratory distress syndrome, amniotic fluid lecithin/sphingomyelin (L/S) ratios and phosphatidylglycerol (PG) status have been successfully used to predict the surfactant status in the fetus. The objective of this ...
Girard N - - 1995
PURPOSE: To illustrate normal maturation of the fetal brain, including the migrational layer, gray matter, early myelination of internal capsules, optic radiations, and corona radiata. METHODS: Seventy-seven fetal brains, ranging from 21 to 38 weeks of gestational age, were examined with MR in vivo; 33 were considered normal. MR examinations ...
Gürdöl F - - 1995
Prolidase (EC: 3.4.13.9) catalyses the hydrolysis of the peptide bond involving the imino nitrogen of proline or hydroxyproline. Because of the high proportion of imino acids in collagen, this enzyme plays an important role in its degradation. Since collagen turnover rate is expected to be high during fetal growth, the ...
Fekete E - - 1995
The developing enteric nervous system of the human foetus has been analyzed at the 10th and 18th week of gestation with a special reference to the development of nerve-muscle contacts. The myenteric plexus formation was analyzed by means of electron microscopy and on whole-mounts after NADH diaphorase histochemistry. The development ...
de Haan H H - - 1995
OBJECTIVE: Our purpose was to determine the diagnostic power of the T/QRS ratio of the electrocardiogram to predict fetal well-being. STUDY DESIGN: In 47 fetal lambs (3 to 5 days after surgery, gestational age 123.5 +/- 3.0 days) asphyxia was induced by restriction of uterine perfusion. Fetuses were either pretreated ...
Brown E E - - 1994
Dorsal-ventral patterning in the Xenopus egg becomes established midway through the first cell cycle during a 30 degree rotation of the subcortical yolk mass relative to the egg cortex. This 'rotation of symmetrisation' is microtubule dependent, and its direction is thought to be cued by the usually eccentric sperm centrosome. ...
Sullivan K M - - 1994
The substantial morbidity and mortality of congenital diaphragmatic hernia (CDH) is attributed to the pulmonary hypoplasia caused by the presence of abdominal viscera in the chest during intrauterine life. Recent experimental studies suggest that surfactant deficiency may also contribute to CDH pathophysiology. Clinically, the amniocentesis-derived lecithin to sphingomyelin (L/S) ratio ...
Bock J L - - 1994
Proton NMR spectroscopy at 600 MHz was performed on 70 specimens of human amniotic fluid, representing pregnancies at different stages of maturation and with different fetomaternal complications. Spectra with good signal-to-noise characteristics were obtained in 3.5 min of acquisition time, directly on untreated fluid, with presaturation to suppress the intense ...
Fakhoury G - - 1994
OBJECTIVE: Amniotic fluid lamellar body concentration was quantified in pregnancy and compared with the lecithin/sphingomyelin ratio and phosphatidylglyceryl to predict fetal lung maturity. STUDY DESIGN: Amniotic fluid was obtained from 56 patients at various gestational ages (16 to 42 weeks) and quantified on a Coulter counter set for particle size ...
Liggins G C - - 1994
The glucocorticoids, cortisol and corticosterone, have a unique function in the fetus in inducing a wide range of enzymes before birth that have little or no function during fetal life but on which survival after birth is dependent. The loss of the placenta at birth deprives the fetus of a ...
Trippenbach T - - 1994
The potency of the Hering-Breuer inspiratory-inhibitory and expiratory-promoting reflexes decreases with maturation in mammals. The Hering-Breuer deflation reflex is present at birth and its power changes little during postnatal development. Already during the second day of life the airway defence reflex resembles that of the adult rabbits. In contrast, sensitivity ...
Khuhapinant A - - 1994
Ineffective erythropoiesis is a prominent defect leading to anaemic status in thalassaemic patients. Reticulocyte enumeration in the peripheral blood is a non-aggressive method of measuring bone marrow erythropoietic activity. We used an automated reticulocyte counter (Sysmex R-3000) to determine the number and maturation level of circulating reticulocytes among various types ...
Yu E - - 1993
To investigate the development of the reticular network of the thymus with aging and under pathologic conditions, we performed reticulin stains on the following samples; 5 fetal thymi (22 to 33 weeks of gestational age) and 35 postnatal thymi (less than 1 month to 33 years of age). The latter ...
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