The vgf gene regulates energy homeostasis and the VGF-derived peptide TLQP-21 centrally exerts catabolic effects in mice and hamsters. Here, we investigate the effect of chronic intracerebroventricular (icv) injection of TLQP-21 in mice fed high fat diet (HFD). Fast weight-gaining mice injected with the peptide or cerebrospinal fluid were selected for physiological, endocrine, and molecular analysis. TLQP-21 selectively inhibited the increase in body weight and epididymal white adipose tissue (eWAT) weight induced by HFD in control animals despite both groups having a similar degree of hyperphagia. TLQP-21 normalized the increase in leptin and decrease in ghrelin while increasing epinephrine and epinephrine/norepinephrine ratio when compared to values in controls. Finally, HFD-TLQP-21 mice showed a selective increase of eWAT beta 3-adrenergic receptor mRNA. Peroxisome-proliferator-activated-receptor-delta and hormone-sensing-lipase mRNA were also upregulated. In conclusion, chronic icv infusion of TLQP-21 prevented the early phase of diet-induced obesity despite overfeeding. These effects were paralleled by activation of catabolic pathways within the eWAT. Our results further support a role for TLQP-21 as a catabolic neuropeptide.

Bartolomucci, A., Bresciani, E., Bulgarelli, I., Rigamonti, A., Pascucci, T., Levi, A., et al. (2009). Chronic intracerebroventricular injection of TLQP-21 prevents high fat diet induced weight gain in fast weight-gaining mice. GENES & NUTRITION, 4(1), 49-57 [10.1007/s12263-009-0110-0].

Chronic intracerebroventricular injection of TLQP-21 prevents high fat diet induced weight gain in fast weight-gaining mice

POSSENTI, ROBERTA;
2009-01-01

Abstract

The vgf gene regulates energy homeostasis and the VGF-derived peptide TLQP-21 centrally exerts catabolic effects in mice and hamsters. Here, we investigate the effect of chronic intracerebroventricular (icv) injection of TLQP-21 in mice fed high fat diet (HFD). Fast weight-gaining mice injected with the peptide or cerebrospinal fluid were selected for physiological, endocrine, and molecular analysis. TLQP-21 selectively inhibited the increase in body weight and epididymal white adipose tissue (eWAT) weight induced by HFD in control animals despite both groups having a similar degree of hyperphagia. TLQP-21 normalized the increase in leptin and decrease in ghrelin while increasing epinephrine and epinephrine/norepinephrine ratio when compared to values in controls. Finally, HFD-TLQP-21 mice showed a selective increase of eWAT beta 3-adrenergic receptor mRNA. Peroxisome-proliferator-activated-receptor-delta and hormone-sensing-lipase mRNA were also upregulated. In conclusion, chronic icv infusion of TLQP-21 prevented the early phase of diet-induced obesity despite overfeeding. These effects were paralleled by activation of catabolic pathways within the eWAT. Our results further support a role for TLQP-21 as a catabolic neuropeptide.
2009
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/09 - FISIOLOGIA
English
Con Impact Factor ISI
VGF; Obesity; Neuropeptides; White adipose tissue; High fat diet
VGF-DERIVED PEPTIDES; BETA-ADRENERGIC-RECEPTORS; INDUCIBLE GENE VGF; INDUCED OBESITY; ENERGY-BALANCE; ADIPOSE-TISSUE; BODY-WEIGHT; FOOD-INTAKE; METABOLIC SYNDROME; LEPTIN RESISTANCE
Bartolomucci, A., Bresciani, E., Bulgarelli, I., Rigamonti, A., Pascucci, T., Levi, A., et al. (2009). Chronic intracerebroventricular injection of TLQP-21 prevents high fat diet induced weight gain in fast weight-gaining mice. GENES & NUTRITION, 4(1), 49-57 [10.1007/s12263-009-0110-0].
Bartolomucci, A; Bresciani, E; Bulgarelli, I; Rigamonti, A; Pascucci, T; Levi, A; Possenti, R; Torsello, A; Locatelli, V; Muller, E; Moles, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/56918
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