Inverse associations of cord blood mitochondrial DNA copy number with childhood adiposity.
Obesity (Silver Spring)
; 32(5): 989-998, 2024 05.
Article
in En
| MEDLINE
| ID: mdl-38454311
ABSTRACT
OBJECTIVE:
The objective of this study was to examine associations between umbilical cord mitochondrial DNA copy number (mtDNAcn) and adiposity across childhood.METHODS:
In a prospective birth cohort of Dominican and African American children from New York City, New York (1998-2006), mtDNAcn was measured in cord blood. Children (N = 336) were evaluated for their height, weight, and bioimpedance at age 5, 7, 9, and 11 years. We used linear mixed-effects models to assess associations of mtDNAcn tertiles in cord blood with child BMI, BMI z scores, fat mass index, and body fat percentage. Latent class growth models and interactions between mtDNAcn and child age or child age2 were used to assess associations between age and adiposity trajectories.RESULTS:
BMI was, on average, 1.5 kg/m2 higher (95% CI 0.58, 2.5) in individuals with mtDNAcn in the low- compared with the middle-mtDNAcn tertile. Results were similar for BMI z score, fat mass index, and body fat percentage. Moreover, children in the low-mtDNAcn group had increased odds of being in an "increasing" or "high-stable" adiposity class.CONCLUSIONS:
Lower mtDNAcn at birth may predict greater childhood adiposity, highlighting the potential key role of perinatal mitochondrial function in adiposity during development.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
DNA, Mitochondrial
/
Body Mass Index
/
Adiposity
/
DNA Copy Number Variations
/
Fetal Blood
/
Pediatric Obesity
Limits:
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Country/Region as subject:
America do norte
/
Republica dominicana
Language:
En
Journal:
Obesity (Silver Spring)
Journal subject:
CIENCIAS DA NUTRICAO
/
FISIOLOGIA
/
METABOLISMO
Year:
2024
Document type:
Article
Affiliation country:
United States