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Sleeve Gastrectomy Reduces Body Weight and Improves Metabolic Profile also in Obesity-Prone Rats.

Abstract：

BACKGROUND:Susceptibility to obesity is associated with a notable inter-individual variation. The aim of the present study was to compare the effectiveness of sleeve gastrectomy (SG) on weight loss and metabolic profile in obesity-prone (OP) rats vs animals that are non-susceptible to obesity (NSO). METHODS:Young male Wistar rats (n = 101) were put in a diet-induced obesity (DIO) programme with ad libitum access to a high-fed diet (HFD) during 12 months. Body weight and food intake were regularly registered. Thereafter, rats were ranked by final body weight to identify the obesity-prone (OP) (n = 13) and non-susceptible to obesity (NSO) (n = 14) animals. OP and NSO rats were submitted to surgical interventions (sham operation, SG and pair-fed to the amount of food eaten by sleeve-gastrectomized rats). Body weight, food intake, energy expenditure, body temperature, fat pads weight, and metabolic profiling were analysed 4 weeks after surgical or dietary interventions. RESULTS:SG in both OP and NSO rats decreased body weight as compared to sham and pair-fed groups (P < 0.05), mainly due to reductions in subcutaneous and perirenal fat mass (P < 0.001). Total weight loss achieved in sleeve-gastrectomized OP and NSO rats was higher than that of pair-fed ones (P < 0.05), showing that the SG effect goes beyond caloric restriction. In this regard, sleeve-gastrectomized rats exhibited significantly (P < 0.05) increased basal rectal temperature together with upregulated brown adipose tissue Ucp-1 protein expression levels. A significant (P < 0.05) improvement in insulin sensitivity was also observed in both OP and NSO animals that underwent SG as compared with pair-fed counterparts. CONCLUSION:Our findings provide the first evidence that obesity-prone rats also benefit from surgery responding effectively to SG, as evidenced by the significant body weight reduction and the metabolic profile improvement.

journal_name

Obes Surg

journal_title

Obesity surgery

authors

Moncada R,Becerril S,Rodríguez A,Méndez-Giménez L,Ramírez B,Catalán V,Gómez-Ambrosi J,Gil MJ,Fernández S,Cienfuegos JA,Valentí V,Frühbeck G

doi

10.1007/s11695-015-1915-0

subject

Has Abstract

pub_date

2016-07-01 00:00:00

pages

1537-48

issue

eissn

0960-8923

issn

1708-0428

pii

10.1007/s11695-015-1915-0

journal_volume

pub_type

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Sleeve Gastrectomy Reduces Body Weight and Improves Metabolic Profile also in Obesity-Prone Rats.