scholarly journals Role of Sirtuins in Adipose Tissue Development and Metabolism

Author(s):  
Alina Kurylowicz
2003 ◽  
Vol 89 (04) ◽  
pp. 696-704 ◽  
Author(s):  
Erik Maquoi ◽  
Diego Demeulemeester ◽  
Gabor Vörös ◽  
Désire Collen ◽  
H. Lijnen

SummaryTo investigate a potential role of stromelysin-1 (MMP-3) in development of adipose tissue, 5 week old male MMP-3 deficient mice (MMP-3-/-) and wild-type (MMP-3+/+) controls were kept on a high fat diet (HFD) for 15 weeks. MMP-3-/- mice were hyperphagic and gained more weight than the MMP-3+/+ mice. At the time of sacrifice, the body weight of the MMP-3-/- mice was significantly higher than that of the MMP-3+/+ mice, as was the weight of the isolated subcutaneous (SC) and gonadal (GON) fat deposits. Significant adipocyte hypertrophy was observed in the GON but not in the SC adipose tissue of MMP-3-/- mice. Fasting plasma glucose and cholesterol levels were comparable in both genotypes, whereas triglyceride levels were significantly lower in MMP-3-/- mice. Staining with an endothelial cell specific lectin revealed a significantly higher blood vessel density and larger total stained area in the GON adipose tissues of MMP-3-/- mice. Thus, in a murine model of nutritionally induced obesity, MMP-3 impairs adipose tissue development, possibly by affecting food intake and/or adipose tissue-related angiogenesis.Theme paper: Part of this paper was originally presented at the joint meetings of the 16th International Congress of the International Society of Fibrinolysis and Proteolysis (ISFP) and the 17th International Fibrinogen Workshop of the International Fibrinogen Research Society (IFRS) held in Munich, Germany, September, 2002.


2002 ◽  
Vol 87 (02) ◽  
pp. 306-310 ◽  
Author(s):  
P.E. Morange ◽  
D. Bastelica ◽  
M.F. Bonzi ◽  
B. Van Hoef ◽  
D. Collen ◽  
...  

SummaryTo investigate the potential role of tissue-type plasminogen activator (t-PA) or urokinase-type plasminogen activator (u-PA) in development of adipose tissue, we have used a nutritionally induced obesity model in t-PA (t-PA−/−) and u-PA (u-PA−/−) deficient mice. Five week old male wild-type (WT), t-PA−/− or u-PA−/− mice (n = 9 to 16) were fed a high fat diet (HFD, 42% fat). After 16 weeks of HFD, the body weight of t-PA−/− mice was significantly higher than that of WT mice (48 ± 1.1 g vs. 39 ± 2.2 g, p = 0.004). The total weight of the isolated subcutaneous (sc) fat deposit was higher in t-PA−/− than in WT mice (2.4 ± 0.22 g vs. 1.2 ± 0.29 g, p = 0.002), accompanied with higher adipocyte diameters (80 ± 1.7 µm vs. 61 ± 4.7 µm, p < 0.01). These differences were not observed in the intra-abdominal fat deposit. The number of stroma cells in both adipose tissue territories was increased in t-PA−/− as compared to WT mice (2.0 ± 0.13 vs. 1.5 ± 0.10 p = 0.02 and 3.0 ± 0.17 vs 1.6 ± 0.17, p = 0.0001, stroma cells/ adipocytes in sc and intra-abdominal tissue, respectively), partly as a result of an increased number of endothelial cells (192 ± 9 vs. 154 ± 18 p = 0.06 and 108 ± 13 vs. 69 ± 8 p = 0.04 CD31 stained/adipocyte area). In contrast the weight gain and adipose tissue development in u-PA−/− mice was not different from that in WT mice. These data suggest that t-PA but not u-PA plays a role in adipose tissue development.


2005 ◽  
Vol 25 (5) ◽  
pp. 1002-1007 ◽  
Author(s):  
Erik Maquoi ◽  
Gabor Vörös ◽  
Peter Carmeliet ◽  
Désiré Collen ◽  
H. Roger Lijnen

Meat Science ◽  
2016 ◽  
Vol 120 ◽  
pp. 100-106 ◽  
Author(s):  
Bo Wang ◽  
Qiyuan Yang ◽  
Corrine L. Harris ◽  
Mark L. Nelson ◽  
Jan R. Busboom ◽  
...  

eLife ◽  
2020 ◽  
Vol 9 ◽  
Author(s):  
Tiziana Squillaro ◽  
Gianfranco Peluso ◽  
Umberto Galderisi ◽  
Giovanni Di Bernardo

Complex interaction between genetics, epigenetics, environment, and nutrition affect the physiological activities of adipose tissues and their dysfunctions, which lead to several metabolic diseases including obesity or type 2 diabetes. Here, adipogenesis appears to be a process characterized by an intricate network that involves many transcription factors and long noncoding RNAs (lncRNAs) that regulate gene expression. LncRNAs are being investigated to determine their contribution to adipose tissue development and function. LncRNAs possess multiple cellular functions, and they regulate chromatin remodeling, along with transcriptional and post-transcriptional events; in this way, they affect gene expression. New investigations have demonstrated the pivotal role of these molecules in modulating white and brown/beige adipogenic tissue development and activity. This review aims to provide an update on the role of lncRNAs in adipogenesis and adipose tissue function to promote identification of new drug targets for treating obesity and related metabolic diseases.


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