PMID- 27161360 OWN - NLM STAT- MEDLINE DCOM- 20171020 LR - 20180117 IS - 1832-4274 (Print) IS - 1832-4274 (Linking) VI - 19 IP - 4 DP - 2016 Aug TI - Increased Fetal Plasma Erythropoietin in Monochorionic Twin Pregnancies With Selective Intrauterine Growth Restriction and Abnormal Umbilical Artery Doppler. PG - 383-8 LID - 10.1017/thg.2016.38 [doi] AB - Hypoxia is the primary stimulus for the production of erythropoietin (EPO) in both fetal and adult life. Here, we investigated fetal plasma EPO concentrations in monochorionic (MC) twin pregnancies with selective intrauterine growth restriction (sIUGR) and abnormal umbilical artery (UA) Doppler. We diagnosed sIUGR in presence of (1) birth-weight discordance >20% and (2) either twin with a birth weight <10th percentile. An abnormal UA Doppler was defined as a persistent absent-reverse end diastolic flow (AREDF). The intertwin EPO ratio was calculated as the plasma EPO level of the smaller (or small-for-gestational-age) twin divided by the EPO concentration of the larger (or appropriate-for-gestational-age (AGA)) twin. Thirty-two MC twin pairs were included. Of these, 17 pairs were normal twins (Group 1), seven pairs were twins with sIUGR without UA Doppler abnormalities (Group 2), and eight pairs were twins with sIUGR and UA Doppler abnormalities (Group 3). The highest EPO ratio was identified in Group 3 (p < .001) but no significant differences were observed between Groups 1 and 2. Fetal hemoglobin levels did not differ significantly in the three groups, and fetal EPO concentration did not correlate with gestational age at birth. We conclude that fetal plasma EPO concentrations are selectively increased in MC twin pregnancies with sIUGR and abnormal UA Doppler, possibly as a result of uncompensated hypoxia. FAU - Chang, Yao-Lung AU - Chang YL AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Chao, An-Shine AU - Chao AS AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Peng, Hsiu-Huei AU - Peng HH AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Chang, Shuenn-Dyh AU - Chang SD AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Su, Sheng-Yuan AU - Su SY AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Chen, Kuan-Ju AU - Chen KJ AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Cheng, Po-Jen AU - Cheng PJ AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. FAU - Wang, Tzu-Hao AU - Wang TH AD - Department of Obstetrics and Gynecology,Chang Gung Memorial Hospital,Linkou,College of Medicine,Chang Gung University,Taoyuan,Taiwan. LA - eng PT - Journal Article DEP - 20160510 PL - England TA - Twin Res Hum Genet JT - Twin research and human genetics : the official journal of the International Society for Twin Studies JID - 101244624 RN - 11096-26-7 (Erythropoietin) SB - IM MH - Chorion MH - Diseases in Twins/blood/diagnosis MH - Erythropoietin/*blood MH - Female MH - Fetal Growth Retardation/blood/*diagnostic imaging MH - Gestational Age MH - Humans MH - Infant, Newborn MH - Male MH - Pregnancy MH - Pregnancy, Twin/*blood MH - Ultrasonography, Doppler MH - Ultrasonography, Prenatal MH - Umbilical Arteries/abnormalities/*diagnostic imaging OTO - NOTNLM OT - erythropoietin OT - intrauterine growth restriction OT - monochorionic twin pregnancy OT - placenta EDAT- 2016/05/11 06:00 MHDA- 2017/10/21 06:00 CRDT- 2016/05/11 06:00 PHST- 2016/05/11 06:00 [entrez] PHST- 2016/05/11 06:00 [pubmed] PHST- 2017/10/21 06:00 [medline] AID - S1832427416000384 [pii] AID - 10.1017/thg.2016.38 [doi] PST - ppublish SO - Twin Res Hum Genet. 2016 Aug;19(4):383-8. doi: 10.1017/thg.2016.38. Epub 2016 May 10.