A SENSITIVE TIME-RESOLVED FLUOROIMMUNOASSAY FOR DETERMINATION OF MEDIAN LEVELS OF PREGNANCY-ASSOCIATED PLASMA PROTEIN A IN PREGNANT WOMEN IN CHINA

REFERENCES

• Lin , T. M. ; Galbert , S. P. ; Kiefer , D. ; Spellacy , W. N. ; Gall , S. Characterization of four human pregnancy-associated plasma proteins . Amer. J. Obstet. Gynecol. 1974 , 118 , 223 – 236 .
   PubMed Web of Science ®Google Scholar
• Wahlstrom , T. ; Teisner , B. ; Folkersen , J. Tissue localization of pregnancy-associated plasma protein-A (PAPP-A) in normal placenta . Placenta 1981 , 2 , 253 – 258 .
   PubMed Web of Science ®Google Scholar
• Tornehave , D. ; Chemnitz , J. ; Teisner , B. ; Folkersen , J. ; Westergaard , J. G. Immunohistochemical Demonstration of Pregnancy-Different Gestational Ages . Placenta 1984 , 5 , 427 – 431 .
   PubMed Web of Science ®Google Scholar
• Folkersen , J. ; Grudzinskas , J. G. ; Hindersson , P. ; Teisner , B. ; Westergaard , J. G. Pregnancy-associated plasma protein A: Circulating levels during normal pregnancy . Amer. J. Obstet. Gynecol. 1981 , 139 , 910 – 914 .
   PubMed Web of Science ®Google Scholar
• Handschuh , K. ; Guibourdenche , J. ; Guesnon , M. ; Laurendeau , I. ; Evain-Brion , D. ; Fournier , T. Modulation of PAPP-A expression by PPARgamma in human first trimester trophoblast . Placenta 2006 , 27 Suppl A , S127 – 134 .
   PubMed Web of Science ®Google Scholar
• Cuckle , H. S. ; Vanlith , J. M. Appropriate Biochemical Parameters in First-Trimester Screening for Down Syndrome . Prenat Diagn. 1999 , 19 , 505 – 512 .
   PubMed Web of Science ®Google Scholar
• Kagan , K. O. ; Wright , D. ; Maiz , N. ; Pandeva , I. ; Nicolaides , K. H. Screening for trisomy 18 by maternal age, fetal nuchal translucency, free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A. Ultrasound Obstet Gynecol. 2008, 32, 488–492.
   PubMed Web of Science ®Google Scholar
• Marttala , J. ; Peuhkurinen , S. ; Ranta , J. K. ; Laitinen , P. ; Kokkonen , H. L. ; Honkasalo , T. ; Ryynanen , M. Screening and outcome of chromosomal abnormalities other than trisomy 21 in northern Finland . Acta Obstet. Gynecol. Scand. 2011 , 90 , 885 – 889 .
   PubMed Web of Science ®Google Scholar
• Fox , N. S. ; Chasen , S. T. First trimester pregnancy associated plasma protein-A as a marker for poor pregnancy outcome in patients with early-onset fetal erowth restriction . Prenat. Diagn. 2009 , 29 , 1244 – 1248 .
   PubMed Web of Science ®Google Scholar
• Salvig , J. D. ; Kirkegaard , I. ; Winding , T. N. ; Henriksen , T. B. ; Tørring , N.; Uldbjerg. N. Low PAPP-A in the first trimester is associated with reduced fetal growth rate prior to gestational week 20 . Prenat. Diagn. 2010 , 30 , 503 – 508 .
   PubMed Web of Science ®Google Scholar
• Ranta , J. K. ; Raatikainen , K. ; Romppanen , J. ; Pulkki , K. ; Heinonen , S. Decreased PAPP-A is associated with preeclampsia, premature delivery and small for gestational age infants but not with placental abruption . Eur. J. Obstet. Gynecol. Reprod. Biol. 2011 , 157 , 48 – 52 .
   PubMed Web of Science ®Google Scholar
• Bischof , P. ; Haenggeli , L. ; Sizonenko , M. T. ; Herrmann , W. ; Sizonenko , P. C. Radioimmunoassay for the measurement of pregnancy-associated plasma protein-A (PAPP-A) in humans . Biol. Reprod. 1981 , 24 ( 5 ), 1076 – 1081 .
   PubMed Web of Science ®Google Scholar
• Pledger , D. R. ; Belfield , A. An ELISA for pregnancy-associated plasma protein A . Ann. Clin. Biochem. 1983 , 20Pt 4 , 236 – 240 .
   PubMed Web of Science ®Google Scholar
• Qin , Q. P. ; Nguyen , T. H. ; Christiansen , M. ; Larsen , S. O. ; Nørgaard-Pedersen , B. Time-resolved immunofluorometric assay of pregnancy-associated plasma protein A in maternal serum screening for Down's Syndrome . Clin. Chim. Acta. 1996 , 29 ( 254 ), 113 – 129 .
   Web of Science ®Google Scholar
• Qin , Q. ; Christiansen , M. ; Lövgren , T. ; Nørgaard-Pedersen , B. ; Pettersson , K. Dual-label time-resolved immunofluorometric assay for simultaneous determination of pregnancy-associated plasma protein A and bree beta-subunit of human chorionic gonadotrophin . J. Immunol. Meth. 1997 , 205 , 169 – 175 .
   PubMed Web of Science ®Google Scholar
• Qin , Q. P. ; Christiansen , M. ; Pettersson , K. Point-of-care time-resolved immunofluorometric assay for human pregnancy-associated plasma protein A: Use in first-trimester screening for Down Syndrome . Clin. Chem. 2002 , 48 , 473 – 483 .
   PubMed Web of Science ®Google Scholar
• Spencer , K. ; Ong , C. Y. ; Liao , A. W. ; Nicolaides , K. H. The influence of ethnic origin on first trimester biochemical markers of chromosomal abnormalities . Prenat. Diagn. 2000 , 20 , 491 – 494 .
   PubMed Web of Science ®Google Scholar
• Krantz , D. A. ; Hallahan , T. W. ; Macri , V. J. ; Macri , J. N. Maternal weight and ethnic adjustment within a first-trimester Down Syndrome and trisomy 18 screening program . Prenat. Diagn. 2005 , 25 , 635 – 640 .
   PubMed Web of Science ®Google Scholar
• Spencer , K. ; Heath , V. ; El-Sheikhah , A. ; Ong , C. Y. ; Nicolaides , K. H. Ethnicity and the need for correction of biochemical and ultrasound markers of chromosomal anomalies in the first trimester: A study of Oriental, Asian and Afro-Caribbean populations . Prenat. Diagn. 2005 , 25 , 365 – 369 .
   PubMed Web of Science ®Google Scholar
• Leung , T. Y. ; Spencer , K. ; Leung , T. N. ; Fung , T. Y. ; Lau , T. K. Higher median levels of free beta-hCG and PAPP-A in the first trimester of pregnancy in a Chinese ethnic group . Implication for first trimester combined screening for Down's Syndrome in the Chinese population. Fetal Diagn. Ther. 2006 , 21 , 140 – 143 .
   Google Scholar
• Kagan , K. O. ; Wright , D. ; Spencer , K. ; Molina , F. S. ; Nicolaides , K. H. First-trimester screening for trisomy 21 by free beta-human chorionic gonadotropin and pregnancy-associated plasma protein-A: impact of maternal and pregnancy characteristics . Ultrasound Obstet. Gynecol. 2008 , 31 , 493 – 502 .
   PubMed Web of Science ®Google Scholar
• Tsukerman , G. L. ; Gusina , N. B. ; Cuckle , H. S. Maternal serum screening for Down Syndrome in the first trimester: Experience from Belarus . Prenat. Diagn. 1999 , 19 , 499 – 504 .
   PubMed Web of Science ®Google Scholar
• de Graaf , I. M. ; Pajkrt , E. ; Bilardo , C. M. ; Leschot , N. J. ; Cuckle , H. S. ; van Lith , J. M. Early pregnancy screening for fetal aneuploidy with serum markers and nuchal translucency . Prenat. Diagn. 1999 , 19 , 458 – 462 .
   PubMed Web of Science ®Google Scholar
• T. Y. and S. G. contributed equally to this work.
   Google Scholar