Abstract
The influence of maternal fat mass and obesity (FTO) gene polymorphism on neonatal insulin sensitivity/resistance biomarkers and lipoprotein profile has not been tested. The study aimed to assess the association between the FTO rs9939609 polymorphism in mother-neonate couples and neonatal anthropometrical measurements, insulin sensitivity/resistance, and lipid and lipoprotein concentrations at birth. Fifty-three term, appropriate-for-gestational-age, Caucasian newborns together with their respective mothers participated in a cross-sectional study. Sixty-six percent of mothers and neonates carried the A allele (being AA or AT). TT mothers gained less weight during pregnancy, but non-significant maternal gene influence was found for neonatal bodyweight, body mass index, or ponderal index. Neonates from AA + AT mothers showed lower glucose, insulin, and homeostatic model assessment insulin resistance (HOMA-IR) but higher homeostatic model assessment insulin sensitivity (HOMA-IS) and homocysteine than neonates whose mothers were TT. AA + AT neonates had higher insulin and HOMA-IR than TT. The genotype neonatal × maternal association was tested in the following four groups of neonates: TT neonates × TT mothers (nTT × mTT), TT neonates × AA + AT mothers (nTT × mAA + AT), AA + AT neonates × TT mothers (nAA + AT × mTT), and AA + AT neonates × AA + AT mothers (nAA + AT × mAA + AT). Non-significant interactions between neonatal and maternal alleles were found for any parameter tested. However, maternal alleles affected significantly glucose, insulin, HOMA-IR, and homocysteine while neonatal alleles the arylesterase activity. Most significant differences were found between nATT + AA × mTT and nATT + AA × mAA + AT. Glycemia, insulinemia, and HOMA-IR were lower, while the Mediterranean diet adherence (MDA) was higher in the mAA + AT vs. mTT whose children were AA + AT. This dietary fact seems to counterbalance the potential negative effect on glucose homeostasis of the obesogenic A allele in neonates.
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Abbreviations
- AE:
-
Arylesterase
- AGA:
-
Appropriate for gestational age
- Apo:
-
Apolipoprotein
- BMI:
-
Body mass index
- CVD:
-
Cardiovascular disease
- FTO :
-
Fat mass and obesity-associated gene
- GDM:
-
Gestational diabetes
- HDLc:
-
Cholesterol transported by high-density lipoproteins
- HEI:
-
Healthy eating index
- HOMA-IR:
-
Homeostatic model assessment insulin resistance
- HOMA-IS:
-
Homeostatic model assessment insulin sensitivity
- IR:
-
Insulin resistance
- LDLc:
-
Cholesterol transported by low-density lipoproteins
- oxLDL:
-
Oxidized LDL
- mAA + AT:
-
Mothers carrying the FTO rs9939609 A allele
- MDA:
-
Mediterranean diet adherence
- MS:
-
Metabolic syndrome
- mTT:
-
Mothers homozygous for the FTO rs9939609 T allele
- nAA + AT:
-
Neonates carrying the FTO rs9939609 A allele
- nTT:
-
Neonates homozygous for the FTO rs9939609 T allele
- PI:
-
Ponderal index
- QUICKI:
-
Quantitative insulin sensitivity check index
- SNP:
-
Single-nucleotide polymorphism
- T2DM:
-
Type 2 diabetes mellitus
- TC:
-
Total cholesterol
- tHcys:
-
Homocysteine
- TG:
-
Triglycerides
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Acknowledgments
This study was supported by the Spanish AGL-2011 29644-C02-02 and CIBER 06/03/035 projects and the Research group of the UCM No. 920536. Thanks are due to the Gynecology and Obstetrics and Laboratory Services of Mérida Hospital (Spain), participant mothers and neonates, and Carmen Bravo from Departamento de Apoyo a la Investigación from the UCM. All authors have significantly contributed to the paper and agree with the present version of the manuscript. FJSM, the corresponding author and guarantor of the paper, has contributed to the study design, data discussion, and writing; EG to data acquisition, analysis, discussion, and writing of the paper; CO-A and MG to data acquisition and analysis; SB to the study design and data discussion; and DC contributed to data discussion and writing of the paper.
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Gesteiro, E., Sánchez-Muniz, F.J., Ortega-Azorín, C. et al. Maternal and neonatal FTO rs9939609 polymorphism affect insulin sensitivity markers and lipoprotein profile at birth in appropriate-for-gestational-age term neonates. J Physiol Biochem 72, 169–181 (2016). https://doi.org/10.1007/s13105-016-0467-7
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DOI: https://doi.org/10.1007/s13105-016-0467-7