In this study, Caco-2 permeability results from different laboratories were compared. Six different sets of apparent permeability coefficient (Papp) values reported in the literature were compared to experimental Papp obtained in our laboratory. The differences were assessed by determining the root mean square error (RMSE) values between the datasets, which reached levels as high as 0.581 for t...

Studies of four pregnancy-associated plasma proteins (PAPP's) were made on 206 plasma samples obtained from 175 pregnant women between 12 and 44 wk of gestation. The concentration of three PAPP's (A, C, and D) were assayed by quantitative crossed immunoelectrophoresis. They showed a gradual but small rate of increase during the 2nd trimester, which became more rapid in the 3rd trimester. PAPP-A...

BACKGROUND/AIM To evaluate pregnancy-associated plasma protein A (PAPP-A), ischemia-modified albumin (IMA), procalcitonin, and troponin I levels as diagnostic markers of acute coronary syndrome in patients admitted to the emergency department. MATERIALS AND METHODS The serum PAPP-A, IMA, procalcitonin, and troponin I levels were measured in 100 patients with acute coronary syndrome admitted t...

IGF-binding proteins (IGFBPs) and their proteases regulate IGFs bioavailability in multiple tissues. Pregnancy-associated plasma protein A (PAPP-A) is a protease acting by cleaving IGFBP2, 4, and 5, regulating local bioavailability of IGFs. We have previously shown that IGFs and IGFBPs are produced by human adult cardiac progenitor cells (haCPCs) and that IGF-1 exerts paracrine therapeutic effe...

Pregnancy-associated plasma protein A (PAPP-A), considered a surrogate marker of increased risk of unstable atherosclerosis and its complications (1, 2 ), is reversibly bound to the surfaces of several cell types because of heparin’s effective competition for surface binding (3 ). Heparins, however, especially low molecular weight heparins (LMWH), are routinely used for the treatment and preven...

The IGF family plays an important role in implantation and placental physiology. IGF-II is abundantly expressed by placental trophoblasts, and IGF binding protein (IGFBP)-4, a potent inhibitor of IGF actions, is the second most abundant IGFBP in the placental bed, expressed exclusively by the maternal decidua. Proteolysis of IGFBP-4 results in decreased affinity for IGF peptides, thereby enhanc...

PURPOSE To investigate the levels of pregnancy-associated plasma protein A (PAPP-A) or insulin-like growth factor -1 (IGF-1) in patients with acute coronary syndrome. METHODS Serum PAPP-A and IGF-1 was measured with biotin-tyramide-amplified enzyme immunoassay and Enzyme Linked Immuoserbent Assay, respectively, in patients with ST elevation acute myocardial infarction (STEMI, n=12), unstable ...

OBJECTIVE To examine the distribution of maternal serum pregnancy-associated plasma protein-A (PAPP-A) and free β-human chorionic gonadotropin (β-hCG) at 12, 22 and 32 weeks' gestation in singleton pregnancies which develop pre-eclampsia (PE) and examine the performance of these biomarkers in screening for PE. METHODS Serum PAPP-A and free β-hCG were measured in 94 989 cases at 11-13 weeks, 7...

Pregnancy-associated plasma protein-A (PAPP-A) level is an independent predictor of acute cardiovascular event occurrence. To test the hypothesis that increased PAPP-A levels would be associated with a higher burden of coronary thin-cap fibroatheroma (TCFA) thereby underlying the heightened risk for cardiovascular events in patients with coronary artery disease; 154 patients (462 vessels and 97...

Preterm newborns developing retinopathy of prematurity (ROP) and bronchopulmonary dysplasia (BPD) show persistently low levels of insulin-like growth factor-I (IGF-I) in sera. They also present higher free IGF-I concentrations in epithelial lining fluids (ELFs) and lung tissues. Pregnancy-associated plasma protein-A (PAPP-A) is a metalloproteinase that dissociates three binding proteins from th...