PMID- 15193867 OWN - NLM STAT- MEDLINE DCOM- 20041223 LR - 20220318 IS - 0143-4004 (Print) IS - 0143-4004 (Linking) VI - 25 IP - 7 DP - 2004 Aug TI - Placental protein 13 (PP-13): effects on cultured trophoblasts, and its detection in human body fluids in normal and pathological pregnancies. PG - 608-22 AB - Placental tissue protein 13 (PP-13), one of the 56 known placental proteins identified till today, was purified from placentas obtained from women at delivery, and used to evoke antibodies against it. The purified PP-13 was lysed to peptides, which were sequenced, leading to the full-length cDNA sequencing and its expression in Escherichia coli. Sequence analysis in databases showed homology to the galectin family. Of the various antibody preparations developed, a pair of monoclonal antibodies (MAbs) coupled to the recombinant PP-13 (PP-13-R) was used for the immunodetection of PP-13 in pregnant women's serum with the solid-phase ELISA format. With a dynamic range of 25-500 pg/mL with no background in non-pregnant women's serum and men's serum, the ELISA test was suitable for the detection of PP-13 in the 1st, 2nd, and 3rd trimesters. PP-13 levels slowly increase during pregnancy. In the 1st trimester, lower than normal PP-13 levels were found in fetal growth restriction (IUGR), preeclampsia (PE), and particularly in early PE (<34 weeks of gestation). In the 2nd and 3rd trimesters, higher than normal concentrations were found in PE, IUGR and in preterm delivery (PTD). Application of PP-13 to cultured trophoblasts elicited depolarization carried by calcium ions, followed by liberation of linoleic and arachidonic acids from the trophoblast membrane, and a subsequent elevation of prostacyclin and thromboxane. These effects were negligible when PP-13 derived from the placentas of patients with IUGR, PE or PTD was used. The results are discussed in view of the potential utilization of PP-13 for early serum screening to assess the risk to develop placental insufficiency, coupled to a differential analysis of the various pathologies by analyzing cultured trophoblasts. FAU - Burger, O AU - Burger O AD - Diagnostic Technology, 49 Ha'Histadrut St., PO Box 25266, Haifa 31250, Israel. FAU - Pick, E AU - Pick E FAU - Zwickel, J AU - Zwickel J FAU - Klayman, M AU - Klayman M FAU - Meiri, H AU - Meiri H FAU - Slotky, R AU - Slotky R FAU - Mandel, S AU - Mandel S FAU - Rabinovitch, L AU - Rabinovitch L FAU - Paltieli, Y AU - Paltieli Y FAU - Admon, A AU - Admon A FAU - Gonen, R AU - Gonen R LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Placenta JT - Placenta JID - 8006349 RN - 0 (Antibodies, Monoclonal) RN - 0 (DNA, Complementary) RN - 0 (Galectins) RN - 0 (LGALS13 protein, human) RN - 0 (Pregnancy Proteins) RN - 0 (Recombinant Proteins) SB - IM MH - Amino Acid Sequence MH - Amniotic Fluid/chemistry MH - Animals MH - Antibodies, Monoclonal MH - Base Sequence MH - Body Fluids/*chemistry MH - Cells, Cultured MH - DNA, Complementary/analysis/chemistry MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Fetal Growth Retardation/metabolism MH - Galectins MH - Gestational Age MH - Humans MH - Mice MH - Mice, Inbred BALB C MH - Molecular Sequence Data MH - Obstetric Labor, Premature MH - Pre-Eclampsia/metabolism MH - Pregnancy MH - Pregnancy Complications/*metabolism MH - Pregnancy Proteins/*analysis/genetics/*pharmacology MH - Radioimmunoassay MH - Recombinant Proteins MH - Sensitivity and Specificity MH - Sequence Homology MH - Trophoblasts/*drug effects EDAT- 2004/06/15 05:00 MHDA- 2004/12/24 09:00 CRDT- 2004/06/15 05:00 PHST- 2003/12/31 00:00 [accepted] PHST- 2004/06/15 05:00 [pubmed] PHST- 2004/12/24 09:00 [medline] PHST- 2004/06/15 05:00 [entrez] AID - S014340040400013X [pii] AID - 10.1016/j.placenta.2003.12.009 [doi] PST - ppublish SO - Placenta. 2004 Aug;25(7):608-22. doi: 10.1016/j.placenta.2003.12.009.