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Characterization of a new animal model of metabolic syndrome: the DahlS.Z-Lepr(fa)/Lepr(fa) rat.

Authors: Hattori, T  Murase, T  Ohtake, M  Inoue, T  Tsukamoto, H  Takatsu, M  Kato, Y  Hashimoto, K  Murohara, T  Nagata, K 
Citation: Hattori T, etal., Nutr Diabetes. 2011 Jan 31;1:e1. doi: 10.1038/nutd.2010.1.
Pubmed: (View Article at PubMed) PMID:23154293
DOI: Full-text: DOI:10.1038/nutd.2010.1

OBJECTIVE: The DahlS.Z-Lepr(fa)/Lepr(fa) (DS/obese) rat strain was established from a cross between Dahl salt-sensitive rats and Zucker fatty (fa/fa) rats, the latter of which harbor a missense mutation in the leptin receptor gene (Lepr). We examined whether DS/obese rats might be a suitable animal model of metabolic syndrome in humans.
METHODS: The systemic pathophysiological and metabolic characteristics of DS/obese rats were determined and compared with those of homozygous lean littermates, namely, DahlS.Z-Lepr(+)/Lepr(+) (DS/lean) rats.
RESULTS: Systolic blood pressure was higher in DS/obese rats fed a normal diet than in DS/lean rats at 11 weeks of age and thereafter. The survival rate of DS/obese rats was significantly lower than that of DS/lean rats at 18 weeks. Body weight, visceral and subcutaneous fat mass, as well as heart, kidney and liver weights, were increased in DS/obese rats at 18 weeks compared with DS/lean rats. Serum low-density lipoprotein (LDL)-cholesterol, triglyceride and insulin concentrations, as well as the ratio of LDL-cholesterol to high-density lipoprotein-cholesterol levels, were increased in DS/obese rats, whereas serum glucose concentration did not differ significantly between DS/obese and DS/lean rats. Creatinine clearance was decreased and urinary protein content was increased in DS/obese rats, which also manifested lipid accumulation in the liver and elevation of serum alanine aminotransferase levels.
CONCLUSION: These results show that the phenotype of DS/obese rats is similar to that of humans with metabolic syndrome, and that these animals may thus be an appropriate model for this condition.


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CRRD Object Information
CRRD ID: 13432147
Created: 2017-09-21
Species: All species
Last Modified: 2017-09-21
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.