PAR Family Polymorphisms and Placental Invasion Disorders
NCT ID: NCT00425867
Last Updated: 2007-01-26
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
100 participants
OBSERVATIONAL
2007-03-31
2007-11-30
Brief Summary
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Detailed Description
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Various proteases of the PAR family as well as matrix metalloproteinases have been implicated in ancillary regulation of cancer metastases and tumor-related angiogenesis. PAR1 in particular has been proposed to be involved in invasive processes of various cancers (Ruf \& Mueller, 2006; Boire et al, 2005). Similarly, it might be surmised that remodeling of the placenta microenvironment as well as the requisites of trophoblast invasiveness may be PAR1 sensitive (Grisaru-Granovsky et al, 2005). Therefore, one might hypothesize that PAR1 gene variability may be involved in early placentation and that adverse pregnancy outcomes of the "placental syndromes" may have their origin in PAR1 dysregulation.
Study Design: This is a prospective case-control pilot study. Subject enrolment and data collection will be performed via the Admission Service of the Division for Maternal \& Fetal Medicine in a large tertiary obstetrics department in Jerusalem, Israel. Demographic data including maternal characteristics, past reproductive history, and information about previous complications during pregnancy, delivery and the neonatal period will be culled. The blood samples will be collected at routine admission after obtaining informed consent by the physician on the floor.
Four groups are described: patients with spontaneous preterm delivery of a singleton before 35 weeks of gestation; patients with a singleton pregnancy complicated by preeclampsia diagnosed according the Working Group Criteria (2000); patients who deliver a small for gestational age (SGA) singleton defined as a birth weight below the 10th percentile for the gestational age according to the Israeli growth curves (Dollberg et al, 2005); and for comparison, patients who deliver a singleton at term with appropriate size for gestational age. Patients who suffer delivery with intrauterine fetal demise and/or neonates with malformations will be excluded.
Maternal and umbilical cord blood samples (in 0.11mol/l sodium tri citrate) will be paired. DNA will be prepared from white blood cells by standard techniques and subsequently stored at -4°C for batched analysis. The laboratory staff will be blinded as to the clinical status of the samples.
Polymorphism analysis will be performed for the following polymorphisms of the PAR1 gene: \[-1426CT\], \[506 insertion of 13 bp\],\[IVS-14A/T\]: as per standard PCR techniques using appropriate restriction endonucleases (Arnaud et l, 2000).
Conditions
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Keywords
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Study Design
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CASE_CONTROL
OTHER
Interventions
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PAR1 polymoprhisms and placental invasion
Eligibility Criteria
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Inclusion Criteria
* Premature delicery
Exclusion Criteria
* Abortion that the cause is known
20 Years
40 Years
FEMALE
Yes
Sponsors
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Shaare Zedek Medical Center
OTHER
Principal Investigators
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Sorina Grisaru, MD
Role: PRINCIPAL_INVESTIGATOR
Shaare Zedek Medical Center
Central Contacts
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Related Links
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Related Info
Other Identifiers
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PAR1 polymorphisms
Identifier Type: -
Identifier Source: org_study_id