ß-Cell death is decreased in women with gestational diabetes mellitus.
Diabetol Metab Syndr
; 8(1): 60, 2016.
Article
en En
| MEDLINE
| ID: mdl-27563355
ABSTRACT
BACKGROUND:
Gestational diabetes mellitus (GDM) affects approximately 7-17 % of all pregnancies and has been recognized as a significant risk factor to neonatal and maternal health. Postpartum, GDM significantly increases the likelihood of developing type 2 diabetes (T2D). While it is well established that insulin resistance and impaired ß-cell function contribute to GDM development, the role of active ß-cell loss remains unknown. Differentially methylated circulating free DNA (cfDNA) is a minimally invasive biomarker of ß-cell loss in type 1 diabetes mellitus. Here we use cfDNA to examine the levels of ß-cell death in women with GDM.METHODS:
Second to third-trimester pregnant women with GDM were compared with women with normal pregnancy (PRG), women at postpartum (PP), and non-pregnant (NP) women. Fasting glucose levels, insulin, and C-peptide levels were measured. Serum samples were collected and cfDNA purified and bisulfite treated. Methylation-sensitive probes capable of differentiating between ß-cell-derived DNA (demethylated) and non-ß-cell-derived DNA (methylated) were used to measure the presence of ß-cell loss in the blood.RESULTS:
GDM was associated with elevated fasting glucose levels (GDM = 185.9 ± 5.0 mg/dL) and reduced fasting insulin and c-peptide levels when compared with NP group. Interestingly, ß-cell derived insulin DNA levels were significantly lower in women with GDM when compared with PRG, NP, and PP groups (demethylation index PRG = 7.74 × 10(-3) ± 3.09 × 10(-3), GDM = 1.01 × 10(-3) ± 5.86 × 10(-4), p < 0.04; NP = 4.53 × 10(-3) ± 1.62 × 10(-3), PP = 3.24 × 10(-3) ± 1.78 × 10(-3)).CONCLUSIONS:
These results demonstrate that ß-cell death is reduced in women with GDM. This reduction is associated with impaired insulin production and hyperglycemia, suggesting that ß-cell death does not contribute to GDM during the 2nd and 3rd trimester of pregnancy.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
2_ODS3
Problema de salud:
2_mortalidade_materna
/
2_muertes_prevenibles
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
Diabetol Metab Syndr
Año:
2016
Tipo del documento:
Article