Evaluation of smoking as a risk factor for activated protein C resistance during pregnancy
Gynecologic and Obstetric Investigation, cilt.64, sa.2, ss.89-94, 2007 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 64 Sayı: 2
- Basım Tarihi: 2007
- Doi Numarası: 10.1159/000100009
- Dergi Adı: Gynecologic and Obstetric Investigation
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.89-94
- Anahtar Kelimeler: pregnancy, smoking, activated protein c resistance, coagulation parameters
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Objective: The effect of smoking on the activated protein C (APC) ratio in normal gestation was systematically investigated. The frequency of acquired APC resistance (APCR) in the smoking and non-smoking subjects with normal follow-up of pregnancy and the outcome observed in these two groups were documented. Study Design: A total of 180 normal pregnant women (non-smokers 138, smokers 42) in different trimesters of gestation admitted to the hospital were enrolled into a cross-sectional study. APC ratio, factor V, factor VIII, protein S and protein C were quantitated. Factor V Leiden mutation analyses were performed by real-time PCR. Results: This cross-sectional study tries to detail the effect of smoking on APCR together with the changes in some components of the protein C/protein S system which may contribute to alterations in the APC ratio in normal gestation. A decreased APC ratio observed in pregnancy was statistically significant in the smokers (p = 0.03). When the trimesters were taken into consideration, APC ratios were significantly lower in the third trimester in the smokers compared with the non-smokers in the same trimesters (p = 0.001). The difference in the APC ratio between the groups in early pregnancy was not significant. Conclusion: These studies have demonstrated that the modified test abolishes the pregnancy-related effect on the APCRs in normal pregnant non-smoking women presumably by normalization of coagulation factors (except factor V). Our result for the non-smoking group is consistent with data provided in previous studies. However, we noted a very significant decrease in the APC ratio in smoking pregnant women in the third trimester, most likely secondary to decreased factor V levels. Copyright © 2007 S. Karger AG.