Effect of matrix metalloproteinase inhibition on adipose tissue development.

Abstract:

:The effect of Ro 28-2653, a synthetic matrix metalloproteinase (MMP) inhibitor, on adipose tissue development was studied in mice kept on a high fat diet (HFD). Five-week-old male wild-type (C57Bl/6J) mice were fed the HFD (42% kcal as fat, 20.1 kJ/g) and received daily p.o. instillations of inhibitor (30 mg/kg) or vehicle. After 15 weeks of the HFD, the body weight gain was lower in the inhibitor-treated group (7.4 +/- 0.88 g versus 10 +/- 1.4 g) whereas the weights of the isolated subcutaneous (SC) or gonadal (GON) fat deposits were 10-15% lower. The number of adipocytes in adipose tissues of the inhibitor-treated mice was somewhat higher (10-17%) but their diameter was smaller (about 10%). In situ zymography showed reduced gelatinolytic activity in SC (about 2.7-fold) and GON (1.4-fold) adipose tissue of inhibitor-treated mice, whereas their fibrillar collagen content was higher (1.5- and 4.7-fold, respectively). In both SC and GON adipose tissues of inhibitor-treated mice, MMP-2 (gelatinase A) and MMP-14 (membrane type-1 MMP) were 2- to 3-fold upregulated, whereas MMP-9 (gelatinase B) mRNA levels were not affected. Thus, in this in vivo model partial inhibition of gelatinolytic activity is associated with moderate effects on adipose tissue development and cellularity. Possibly, enhanced MMP expression to some extent counteracts the in vivo effect of the inhibitor in adipose tissue.

authors

Demeulemeester D,Collen D,Lijnen HR

doi

10.1016/j.bbrc.2005.01.103

subject

Has Abstract

pub_date

2005-04-01 00:00:00

pages

105-10

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)00164-6

journal_volume

329

pub_type

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