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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3942

Title: Dynamic changes in the levels of maternal serum squamous cell carcinoma antigen, a potential biomarker of amniotic fluid embolism, before and after delivery in relation to the mode of delivery.
Other Titles: 母体血中における分娩形式による分娩前後の、羊水塞栓症のバイオマーカーとなりうるSCC 抗原の大きな変化
Authors: Nakano, Kazutoshi
Kawahara, Naoki
Yamada, Yuki
Lota, Liu
Ohbayashi, Chiho
Kobayashi, Hiroshi
Keywords: squamous cell carcinoma antigen
vaginal delivery
cesarean section
amniotic fluid
fetal urine
Issue Date: Mar-2021
Publisher: Spandidos Publications
Citation: World Academy of Sciences journal Vol.3 No.2 Article No.18 (2021 March-April)
Abstract: Amniotic fluid embolism (AFE) is a serious disease in which amniotic fluid components enter the maternal systemic circulation, causing cardiopulmonary collapse in pregnant women. It has been previously reported that amniotic fluid contains extremely high levels of squamous cell carcinoma antigen (SCCA), and that pregnant women who do not survive due to AFE have high blood SCCA levels. The aim of the present study was to determine the possible mechanisms through which SCCA in amniotic fluid enters the maternal blood, as well as the potential origin of SCCA. The prospective study included a cohort of 464 women (339 normal vaginal deliveries, 97 cesarean deliveries without labor, and 28 cesarean deliveries with labor). The dynamic changes in maternal serum SCCA levels were determined before and after delivery in relation to the mode of delivery, and SCCA levels were measured in the placenta, fetal skin, amniotic fluid cell components, amniotic fluid and neonatal urine. Serial serum samples collected at the time of admission, at 2 h postpartum, and on postpartum day 3 were quantitatively measured for SCCA by enzyme‑linked immunosorbent assay. Amniotic fluid and neonatal urine SCCA levels were also measured. The protein expression of SCCA in the placenta and fetal skin was assessed by immunohistochemistry. In vaginal deliveries, there was a significant increase in serum SCCA levels from admission to 2 h postpartum, and SCCA levels decreased on postpartum day 3. In cesarean deliveries, the SCCA levels at the time of admission and 2 h postpartum did not differ. The SCCA levels were significantly higher in women who underwent vaginal deliveries compared to those that underwent cesarean deliveries without labor (P=0.033). Immunohistochemical staining revealed no SCCA expression in the placenta and fetal skin. The SCCA levels in neonatal urine immediately after birth were as high as those in the amniotic fluid, suggesting that SCCA may originate from fetal urine. The present study thus suggests that amniotic fluid SCCA levels, which may be derived from fetal urine, can enter the maternal circulation during vaginal delivery. The onset of labor and full cervical dilatation are the main causes of entry of amniotic fluid components into the maternal circulation.
Description: 博士(医学)・甲第796号・令和3年6月25日
Copyright: © Nakano et al. This is an open access article distributed under the terms of Creative Commons Attribution License (https://creativecommons.org/licenses/by-nc-nd/4.0/).
URI: http://hdl.handle.net/10564/3942
ISSN: 26322900
DOI: https://doi.org/10.3892/wasj.2021.89
Academic Degrees and number: 24601A796
Degree-granting date: 2021-06-25
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2021年度

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