Low level maternal smoking and infant birthweight reduction: Genetic contributions of GSTT1 and GSTM1 polymorphisms
Journal article
Danileviciute, Asta, Grazuleviciene, Regina, Paulauskas, Algimantas, Nadisauskiene, Ruta and Nieuwenhuijsen, Mark J.. (2012). Low level maternal smoking and infant birthweight reduction: Genetic contributions of GSTT1 and GSTM1 polymorphisms. BMC Pregnancy and Childbirth. 12(1), pp. 1 - 10. https://doi.org/10.1186/1471-2393-12-161
Authors | Danileviciute, Asta, Grazuleviciene, Regina, Paulauskas, Algimantas, Nadisauskiene, Ruta and Nieuwenhuijsen, Mark J. |
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Abstract | Background: Genetic susceptibility to tobacco smoke might modify the effect of smoking on pregnancy outcomes. Methods: We conducted a case–control study of 543 women who delivered singleton live births in Kaunas (Lithuania), examining the association between low-level tobacco smoke exposure (mean: 4.8 cigarettes/day) during pregnancy, GSTT1 and GSTM1 polymorphisms and birthweight of the infant. Multiple linear-regression analysis was performed adjusting for gestational age, maternal education, family status, body mass index, blood pressure, and parity. Subsequently, we tested for the interaction effect of maternal smoking, GSTT1 and GSTM1 genes polymorphisms with birthweight by adding all the product terms in the regression models. Results: The findings suggested a birthweight reduction among light-smoking with the GSTT1–null genotype (−162.9 g, P = 0.041) and those with the GSTM1–null genotype (−118.7 g, P = 0.069). When a combination of these genotypes was considered, birthweight was significantly lower for infants of smoking women the carriers of the double-null genotypes (−311.2 g, P = 0.008). The interaction effect of maternal smoking, GSTM1 and GSTT1 genotypes was marginally significant on birthweight (−234.5 g, P = 0.078). Among non-smokers, genotype did not independently confer an adverse effect on infant birthweight. Conclusions: The study shows the GSTT1–null genotype, either presents only one or both with GSTM1–null genotype in a single subject, have a modifying effect on birthweight among smoking women even though their smoking is low level. Our data also indicate that identification of the group of susceptible subjects should be based on both environmental exposure and gene polymorphism. Findings of this study add additional evidence on the interplay among two key GST genes and maternal smoking on birth weight of newborns. |
Keywords | birthweight; GST polymorphisms; smoking; interaction |
Year | 2012 |
Journal | BMC Pregnancy and Childbirth |
Journal citation | 12 (1), pp. 1 - 10 |
Publisher | BioMed Central |
ISSN | 1471-2393 |
Digital Object Identifier (DOI) | https://doi.org/10.1186/1471-2393-12-161 |
Scopus EID | 2-s2.0-84871500210 |
Open access | Open access |
Page range | 1 - 10 |
Research Group | Mary MacKillop Institute for Health Research |
Publisher's version | License |
Place of publication | United Kingdom |
https://acuresearchbank.acu.edu.au/item/896vv/low-level-maternal-smoking-and-infant-birthweight-reduction-genetic-contributions-of-gstt1-and-gstm1-polymorphisms
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License: CC BY 3.0 |
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