Search Results - "Hallahan, T. W."

Impact of nuchal translucency credentialing by the FMF, the NTQR or both on screening distributions and performance by Evans, M. I., Krantz, D. A., Hallahan, T. W., Sherwin, J.

“…Objective In the USA, both The Fetal Medicine Foundation (FMF) and the Nuchal Translucency Quality Review Program (NTQR) have operated education, review and…”
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Genetic sonography after first‐trimester Down syndrome screening by Krantz, D. A., Hallahan, T. W., Macri, V. J., Macri, J. N.

“…Objective Approximately 90% of Down syndrome cases are detected during first‐trimester screening. We aimed to determine the potential effectiveness of…”
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Cell‐free fetal DNA screening in the USA: a cost analysis of screening strategies by Evans, M. I., Sonek, J. D., Hallahan, T. W., Krantz, D. A.

“…ABSTRACT Objectives To determine whether implementation of primary cell‐free fetal DNA (cffDNA) screening would be cost‐effective in the USA and to evaluate…”
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First‐trimester screening for fetal aneuploidy: biochemistry and nuchal translucency by Orlandi, F., Damiani, G., Hallaban, T. W., Krantz, D. A., Macri, J. N.

“…Maternal dried whole‐blood specimens were collected prospectively from 2010 singleton pregnancies between 9 + 0 and 13 + 4 weeks that included 18 chromosomally…”
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Genetic Sonography After First-trimester Down Syndrome Screening by Krantz, D A, Hallahan, T W, Macri, V J, Macri, J N

“…Although second-trimester Down syndrome screening using maternal analytes was long accepted as the standard of care, first-trimester screening using both…”
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Dual Site Model for the Organogenic Activity of Angiogenin by Hallahan, Terrence W., Shapiro, Robert, Vallee, Bert L.

“…The residues that are indispensable for the ribonucleolytic activity of angiogenin are also known to be essential for its angiogenic activity. We now…”
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Maternal serum levels of free β-hCG and PAPP-A in the first trimester of pregnancy are not associated with subsequent fetal growth retardation or preterm delivery by Morssink, L. P., Kornman, L. H., Hallahan, T. W., Kloosterman, M. D., Beekhuis, J. R., de Wolf, B. T. H. M., Mantingh, A.

“…The purpose of this case–control study was to examine the association of first‐trimester concentrations of free β‐human chorionic gonadotropin (free β‐hCG) and…”
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Appropriate terminology for free β-hCG by Hallahan, T. W., Krantz, D. A.

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Statistical flaw in SURUSS model by Krantz, D. A., Hallahan, T. W., James Macri, V., Macri, James N.

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Importance of asparagine-61 and asparagine-109 to the angiogenic activity of human angiogenin by Hallahan, Terrence W, Shapiro, Robert, Strydom, Daniel J, Vallee, Bert L

“…Two distinct regions of angiogenin are critical for angiogenic activity: a catalytic site capable of cleaving RNA and a noncatalytic site, encompassing…”
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First-Trimester down syndrome screening using dried blood biochemistry and nuchal translucency by Krantz, David A, Hallahan, Terrence W, Orlandi, Francesco, Buchanan, Philip, Larsen, John W, Macri, James N

“…Objective: To assess the effectiveness of free β-hCG, pregnancy-associated plasma protein A, and nuchal translucency in a prospective first-trimester prenatal…”
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P01.05: The effect of ethnicity on first‐trimester nasal bone assessment by Krantz, D. A., Hallahan, T. W., Macri, V. J.

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OP01.02: Association of first‐trimester nasal bone length with free beta hCG, PAPP‐A and nuchal translcuency by Hallahan, T. W., Krantz, D. A., Macri, V. J.

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OP01.31: Incorporation of nasal bone assessment into first‐trimester Down syndrome screening with free beta hCG, PAPP‐A and nuchal translucency by Orlandi, F., Rossi, C., Orlandi, E., Hallahan, T. W., Macri, V. J., Krantz, D. A.

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Comparison of urinary free beta (hCG) and beta-core (hCG) in prenatal screening for chromosomal abnormalities by Hallahan, Terrence W., Krantz, David A., Tului, Lucia, Alberti, Ezio, Buchanan, Philip D., Orlandi, Francesco, Klein, Victor, Larsen Jr, John W., Macri, James N.

“…To evaluate the potential utility of free beta (hCG) and beta‐core (hCG) in a prenatal screening protocol for Down syndrome we analysed these markers in dried…”
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Monoterpene biosynthesis: demonstration of a geranyl pyrophosphate:sabinene hydrate cyclase in soluble enzyme preparations from sweet marjoram (Majorana hortensis) by Hallahan, T W, Croteau, R

“…A soluble enzyme preparation from the leaves of sweet marjoram (Majorana hortensis Moench) catalyzes the divalent cation-dependent cyclization of [1-3H]geranyl…”
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Monoterpene biosynthesis: mechanism and stereochemistry of the enzymatic cyclization of geranyl pyrophosphate to (+)-cis- and (+)-trans-sabinene hydrate by Hallahan, T W, Croteau, R

“…The conversion of geranyl pyrophosphate to (+)-cis- and (+)-trans-sabinene hydrate by a partially purified cyclase from sweet marjoram (Majorana hortensis) is…”
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Hydrolysis of dolichyl esters by oviduct membranes and characterization of endogenous dolichyl esters by Malvar, T M, Hallahan, T W, Beach, D H, Lucas, J J

“…The chick oviduct system has been employed to study whether dolichol esters might serve as a storage form of dolichol to be converted to dolichyl phosphate…”
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Association of extreme first-trimester free human chorionic gonadotropin-β, pregnancy-associated plasma protein A, and nuchal translucency with intrauterine growth restriction and other adverse pregnancy outcomes by Krantz, David, Goetzl, Laura, Simpson, Joe Leigh, Thom, Elizabeth, Zachary, Julia, Hallahan, Terrence W., Silver, Richard, Pergament, Eugene, Platt, Lawrence D., Filkins, Karen, Johnson, Anthony, Mahoney, Maurice, Hogge, W. Allen, Wilson, R. Douglas, Mohide, Patrick, Hershey, Douglas, Wapner, Ronald

“…The purpose of this study was to determine the association between first-trimester trisomy 21 screening markers (free human chorionic gonadotropin-β [hCG],…”
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First-trimester screening for trisomy-21 using a simplified method to assess the presence or absence of the fetal nasal bone by Orlandi, Francesco, Rossi, Cinzia, Orlandi, Emanuela, Jakil, Maria Cristina, Hallahan, Terrence W., Macri, V. James, Krantz, David A.

“…To determine the benefit of including nasal bone assessment in addition to standard first-trimester markers (nuchal translucency, free beta human chorionic…”
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