Article (Scientific journals)
Deficiency of tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) impairs nutritionally induced obesity in mice.
Lijnen, Roger; Demeulemeester, Diego; Van Hoef, B. et al.
2003In Thrombosis and Haemostasis, 89 (2), p. 249-255
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Keywords :
TIMP; obesity; adipose tissue
Abstract :
[en] Tissue inhibitor of matrix metalloproteinase-1 deficient (TIMP-1(-/-)) mice and wild-type (TIMP-1(+/+)) controls were kept on a standard (SFD) or a high fat diet (HFD) for 15 weeks. At the time of sacrifice, TIMP-1(-/-) mice on HFD had a significantly lower body weight (29 +/- 1.5 versus 41 +/- 1.8 g, p <0.005), and significantly less subcutaneous (0.81 +/- 0.19 versus 1.78 +/- 0.21 g, p <0.05) and gonadal (0.87 +/- 0.17 versus 1.85 +/- 0.18 g, p <0.005) fat mass. These differences were much less pronounced for mice on SFD. On HFD but not on SFD, adipocyte diameters were significantly lower in the adipose tissue of TIMP-1(-/-) mice. Plasma leptin levels in TIMP-1(-/-) mice on HFD were significantly lower as compared to TIMP-1(+/-) mice, and strongly correlated with adipose tissue mass for both genotypes. Staining with an endothelial cell specific lectin revealed a significantly higher blood vessel density, larger stained area and vessel size in adipose tissue of TIMP-1(-/-) mice on HFD. This difference disappeared after normalization to the adipocyte number, suggesting that it does not represent a true enhancement of angiogenesis. Thus, in a murine model of nutritionally induced obesity, TIMP-1 promotes adipose tissue development.
Disciplines :
Endocrinology, metabolism & nutrition
Author, co-author :
Lijnen, Roger
Demeulemeester, Diego
Van Hoef, B.
Collen, Désiré
Maquoi, Erik  ;  Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Language :
English
Title :
Deficiency of tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) impairs nutritionally induced obesity in mice.
Publication date :
February 2003
Journal title :
Thrombosis and Haemostasis
ISSN :
0340-6245
eISSN :
2567-689X
Publisher :
Schattauer Gmbh-Verlag Medizin Naturwissenschaften, Stuttgart, Germany
Volume :
89
Issue :
2
Pages :
249-255
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 November 2011

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