Circulating thrifty microRNA is related to insulin sensitivity, adiposity, and energy metabolism in adults with overweight and obesity: the POUNDS Lost trial.
Am J Clin Nutr
; 117(1): 121-129, 2023 01.
Article
en En
| MEDLINE
| ID: mdl-36789931
BACKGROUND: MicroRNA 128-1 (miR-128-1) was recently linked to the evolutionary adaptation to famine and identified as a thrifty microRNA that controls energy expenditure, contributing to obesity and impaired glucose metabolism. OBJECTIVES: We investigated whether circulating miR-128-1-5p and its temporal changes in response to weight-loss diet interventions were related to regulating insulin resistance, adiposity, and energy expenditure in adults with overweight and obesity. We also examined whether habitual physical activity (PA) and different macronutrient intakes modified associations of changes in miR-128-1-5p with improved metabolic outcomes. METHODS: This study included 495 adults who consumed weight-loss diets with different macronutrient intakes. Circulating levels of miR-128-1-5p were assessed at baseline and 6 mo after the interventions. Outcome measurements included changes in insulin resistance HOMA-IR, adiposity, and resting energy expenditure. RESULTS: We observed significant relations between circulating miR-128-1-5p and the positive selection signals at the 2q21.3 locus assessed by the single nucleotide polymorphisms rs1446585 and rs4988235. Higher miR-128-1-5p levels were associated with greater HOMA-IR (ß per 1 SD: 0.08 [SE 0.03]; P = 0.009), waist circumference (ß, 1.16 [0.55]; P = 0.036), whole-body total % fat mass (ß, 0.75 [0.30]; P = 0.013), and REE (ß, 23 [11]; P = 0.037). In addition, higher miR-128-1-5p level was related to lower total PA index (ß, -0.23 [0.07]; P = 0.001) and interacted with PA (Pinteraction < 0.05) on changes in HOMA-IR and adiposity. We found that greater increases in miR-128-1-5p levels after the interventions were associated with lesser improvements in HOMA-IR and adiposity in participants with no change/decreases in PA. Furthermore, we found that dietary fat (Pinteraction = 0.027) and protein (Pinteraction= 0.055) intakes modified relations between changes in miR-128-1-5p and REE. CONCLUSIONS: Circulating thrifty miRNA was linked to regulating body fat, insulin resistance, and energy metabolism. Temporal changes in circulating miR-128-1-5p were associated with better weight-loss outcomes during the interventions; habitual PA and dietary macronutrient intake may modify such relations. This trial was registered at clinicaltrials.gov as NCT00072995.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Resistencia a la Insulina
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MicroARNs
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Sobrepeso
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MicroARN Circulante
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Obesidad
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
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Humans
Idioma:
En
Revista:
Am J Clin Nutr
Año:
2023
Tipo del documento:
Article
Pais de publicación:
Estados Unidos