Search published articles


Showing 2 results for Miscarriage
Comparaing the causes of abortion in patients with two or more than two consecutive miscarriages
Azargoon Md. A, Heidary S, Alavi Toussy J,
Volume 69, Issue 4 (7-2011)
Abstract

800x600 Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Recurrent miscarriage is defined as the loss of three or more pregnancies. Recurrent Pregnancy Loss (RPL) is traditionally investigated after three or more consecutive losses. Although some believe that the investigation must be launched after two miscarriages, there is not enough compelling evidence to draw conclusion.
Methods : In this cross-sectional study, we studied 58 women with two or more consecutive abortions (37 women with two and 21 women with three or more miscarriages) from 2005 to 2009. The following risk factors were analyzed and compared between the two groups: endocrine dysfunctions, genetic abnormalities, uterine anomalies, infections, thrombophilia, polycystic ovary syndrome, autoimmune disorders, sperm characteristics, and advanced maternal age.
Results : We did not find any known factor for pregnancy losses in 18 (31.03%) patients but in the rest, the most common cause of Recurrent pregnancy loss was endocrine disorders (41.4%). The other causes were uterine abnormalities (12.1%), infections (12.1%), maternal age more than 35 years (12.1%), thrombophilia (8.6%), abnormal semen analysis (8.6%), genetic defects (6.9%) and autoimmune disorders (1.7%). There were no significant differences between the two groups in regards with the causes of abortion except uterine abnormality (P=0.039) which was more frequent in women with three or more three miscarriages (23.8%) relative to women with two abortions (5.4%).
Conclusion: There were no significant differences between women with two or women with three or more three abortions in regards with the causes of abortion except uterine anomalies. Therefore, it seems quite reasonable and perhaps beneficial to start the investigation in patients with two abortions.


Association between 497A>G polymorphism in FCGR2A gene with recurrent miscarriage in infertile women
Zahra Mofidimanesh , Khadijeh Onsory , Anahita Mohseni Meybodi ,
Volume 74, Issue 11 (2-2017)
Abstract

Background: The results indicated that the immunologic and genetic factors play a key role in the susceptibility to this syndrome compared to other risk factors. Immunoglobulin G, representing approximately 80% of Immunoglobulins in humans and the only way that IgG2 can be passed from mother to fetus blood circulation is binding to Fcgamma receptor (FcγR) classes which have been coded by Fcgamma receptor (FcγRIIA) gene. Any changes in the FcγRIIA gene structure such as mutations or polymorphisms can be considered as risk factors on the incidence of abortion through causing the inflammation or decreasing fetus safety. This receptor is the only which can have an interaction with IgG2 antibody and the Therefore, the current study was carried out to assess the association between R/H131 polymorphism in the FcγRIIA gene and susceptibility to recurrent abortions in Iranian women.

Methods: For this reason, a case-control study was confirmed to compare the frequency of FCGR2A gene R/H131 polymorphism in 150 women with recurrent miscarriage history having normal karyotype and 150 healthy women with no abortion history as control which were collected in March 2014 up to September 2015, from Royan Institute for Reproductive, Tehran, Iran. The genomic DNA was extracted from peripheral blood leukocytes and genotyping was performed using amplification refractory mutation system-polymerase chain reaction (ARMS-PCR).

Results: The frequency of AA, AG, and GG genotypes in case and control groups were 31.3%, 54.7%, 14% and 27.3%, 49.2%, 23.5% respectively. According to the findings, the presence of the risk allele was not associated with increased risk of recurrent miscarriage compared with individuals lacking the risk allele and it statistically was significant (P= 0.11). No significant association was found between the age of participants and risk of abortion in Iranian studied population (P= 0.083).

Conclusion: The results of present study do not support the previous findings of an association between R/H131 polymorphism in FCGR2A gene and recurrent miscarriage.

Page 1 from 1     

© 2026 , Tehran University of Medical Sciences, CC BY-NC 4.0

Designed & Developed by : Yektaweb