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The Relationship of Pregnancy-Associated Plasma Protein A and Human Chorionic Gonadotropin with Adverse Pregnancy Outcomes: A Prospective Study

  • Hamideh Pakniat
  • Atieh Bahman
  • Iman AnsariEmail author
Original Article
  • 10 Downloads

Abstract

Purpose

This prospective study investigated the relationship between pregnancy-associated plasma protein A (PAPP-A) and human chorionic gonadotropin (hCG) and adverse pregnancy outcomes in the Iranian population.

Materials

Overall, 994 singleton pregnant mothers of 18–35-year old were referred for first-trimester screening tests, including PAPP-A and β-hCG, at the age of 6 days and 11–13 weeks, and were followed until the end of their pregnancy. The adverse pregnancy outcomes, PAPP-A, and β-hCG serum levels were recorded and analyzed. The sensitivity and specificity of the test were measured by calculating the area under the curve of receiver operating characteristic curve (ROC).

Results

The mean serum level of PAPP-A and β-hCG was 1.10 ± 0.69 and 1.09 ± 0.8 MoM, respectively. Pregnancy-associated plasma protein A, regardless of its percentile, showed a significant relationship with the incidence of preeclampsia, preterm birth, and fetal low birth weight (p < 0.001 for each). However, the relationship between PAPP-A and abortion was not significant (p > 0.05). According to ROC, the results indicated that PAPP-A had a significant relationship with the incidence of preeclampsia, preterm birth, and fetal low birth weight (p < 0.001). However, β-hCG levels showed no significant relationship with adverse pregnancy outcomes.

Conclusions

The result of this study revealed that lower level of PAPP-A and β-hCG could be a predictive factor in preterm labor. Also, this study indicated that PAPP-A measurements could be a screening test for adverse pregnancy outcomes, such as preeclampsia, low birth weight and preterm labor.

Keywords

PAPP-A β-hCG Preeclampsia Preterm labor Low birth weight Abortion 

Notes

Acknowledgements

This work was supported in part by Kowar Hospital Development Research Center, Qazvin University of Medical Sciences. We gratefully acknowledge the Zahra Sadat Mohammadi for assistance with statistical analysis.

Compliance with Ethical Standards

Conflict of interest

The authors declared no conflict of interest.

Ethical Approval

The researchers were committed to the ethical guidelines of the Declaration of Helsinki, and approval for the study was obtained from the Ethical Committee and Institutional Review Board of Qazvin University of Medical Sciences. The data were gathered after obtaining the participants’ informed consents, considering confidentiality and cultural obligations.

Informed consent

Informed consent was obtained from all patients for being included in the study.

Funding

This study was funded by Kowsar Research Center, Qazvin University of Medical Sciences.

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Copyright information

© Federation of Obstetric & Gynecological Societies of India 2019

Authors and Affiliations

  1. 1.Department of Obstetrics and GynecologyQazvin University of Medical SciencesQazvinIran
  2. 2.Department of Gynecologic Oncology, Faculty of MedicineShahid Beheshti University of Medical SciencesTehranIran
  3. 3.Medical Students Research CommitteeShahed UniversityTehranIran

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