| Increase in the plasma levels of protein Z-dependent protease inhibitor in normal pregnancies but not in non-pregnant patients with unexplained recurrent miscarriage. | |
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MedLine Citation:
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PMID: 22274138 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Protein Z (PZ)-dependent protease inhibitor (ZPI) is a serine protease inhibitor which efficiently inactivates activated factor X, when ZPI is complexed with PZ in plasma. Reduced plasma levels of ZPI and PZ have been reported in association with thrombosis. It has also been reported that PZ increases during pregnancy and that its partial deficiency is related to early pregnancy loss or recurrent miscarriage (RM). However, until now there has been no report on ZPI in pregnancy. To explore the possible role(s) of ZPI in the maintenance of pregnancy, we studied 42 non-pregnant normal women, 32 women with normal pregnancies, and 134 cases of unexplained RM in Japan, as well as 64 non-pregnant normal German females. Plasma ZPI was measured by in-house ELISA. There were significantly higher concentrations of plasma ZPI in normal pregnancies compared to non-pregnant women. The present study also confirmed that both factor X, the major target of ZPI, and protein Z increased during normal pregnancies. This increased ZPI and PZ may counteract the increased activated factor X, which may in turn contribute to the maintenance of normal placental circulation. Plasma ZPI levels were unchanged in non-pregnant RM women, while the plasma PZ level was slightly reduced, a finding consistent with existing reports. The exact relationship between RM and this unaltered ZPI with mild PZ reduction relative to normal pregnancies warrants further investigation. |
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Authors:
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M Souri; M Sugiura-Ogasawara; S Saito; B Kemkes-Matthes; J C M Meijers; A Ichinose |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-25 |
Journal Detail:
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Title: Thrombosis and haemostasis Volume: 107 ISSN: 0340-6245 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7608063 Medline TA: Thromb Haemost Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Akitada Ichinose, MD, PhD, Department of Molecular Patho-Biochemistry and Patho-Biology, Yamagata University School of Medicine, Iida-Nishi 2-2-2, Yamagata 990-9585, Japan, E-mail: aichinos@med.id.yamagata-u.ac.jp. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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