Reducing insulin via conditional partial gene ablation in adults reverses diet-induced weight gain.
FASEB J
; 32(3): 1196-1206, 2018 03.
Article
en En
| MEDLINE
| ID: mdl-29122848
ABSTRACT
Excess circulating insulin is associated with obesity in humans and in animal models. However, the physiologic causality of hyperinsulinemia in adult obesity has rightfully been questioned because of the absence of clear evidence that weight loss can be induced by acutely reversing diet-induced hyperinsulinemia. Herein, we describe the consequences of inducible, partial insulin gene deletion in a mouse model in which animals have already been made obese by consuming a high-fat diet. A modest reduction in insulin production/secretion was sufficient to cause significant weight loss within 5 wk, with a specific effect on visceral adipose tissue. This result was associated with a reduction in the protein abundance of the lipodystrophy gene polymerase I and transcript release factor ( Ptrf; Cavin) in gonadal adipose tissue. RNAseq analysis showed that reduced insulin and weight loss also associated with a signature of reduced innate immunity. This study demonstrates that changes in circulating insulin that are too fine to adversely affect glucose homeostasis nonetheless exert control over adiposity.-Page, M. M., Skovsø, S., Cen, H., Chiu, A. P., Dionne, D. A., Hutchinson, D. F., Lim, G. E., Szabat, M., Flibotte, S., Sinha, S., Nislow, C., Rodrigues, B., Johnson, J. D. Reducing insulin via conditional partial gene ablation in adults reverses diet-induced weight gain.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Aumento de Peso
/
Eliminación de Gen
/
Dieta Alta en Grasa
/
Homeostasis
/
Insulina
/
Obesidad
Tipo de estudio:
Etiology_studies
/
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
FASEB J
Asunto de la revista:
BIOLOGIA
/
FISIOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Canadá