Expression of obesity- and type-2 diabetes-associated genes in omental adipose tissue of individuals with obesity

Gene ◽  
2022 ◽  
pp. 146181
Author(s):  
A. Molina-Ayala Mario ◽  
Rodríguez-Amador Virginia ◽  
Suárez-Sánchez Rocío ◽  
León-Solís Lizbel ◽  
Gómez-Zamudio Jaime ◽  
...  
2000 ◽  
Vol 1 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Michael A. Statnick ◽  
Lisa S. Beavers ◽  
Laura J. Conner ◽  
Helena Corominola ◽  
Dwayne Johnson ◽  
...  

We have screened a subtracted cDNA library in order to identify differentially expressed genes in omental adipose tissue of human patients with Type 2 diabetes. One clone (#1738) showed a marked reduction in omental adipose tissue from patients with Type 2 diabetes. Sequencing and BLAST analysis revealed clone #1738 was the adipocyte-specific secreted protein gene apM1 (synonyms ACRP30, AdipoQ, GBP28). Consistent with the murine orthologue, apM1 mRNA was expressed in cultured human adipocytes and not in preadipocytes. Using RT-PCR we confirmed that apM1 mRNA levels were significantly reduced in omental adipose tissue of obese patients with Type 2 diabetes compared with lean and obese normoglycemic subjects. Although less pronounced, apM1 mRNA levels were reduced in subcutaneous adipose tissue of Type 2 diabetic patients. Whereas the biological function of apM1 is presently unknown, the tissue specific expression, structural similarities to TNFα and the dysregulated expression observed in obese Type 2 diabetic patients suggest that this factor may play a role in the pathogenesis of insulin resistance and Type 2 diabetes.


2020 ◽  
Vol 8 (1) ◽  
pp. e001465
Author(s):  
Kentaro Ushijima ◽  
Chisato Suzuki ◽  
Hiroko Kitamura ◽  
Ken Shimada ◽  
Hirotoshi Kawata ◽  
...  

IntroductionWe previously reported in ob/ob mice, one of animal models of human type 2 diabetes mellitus (DM2), that (i) acetylation of histone H3 lysine 9 (H3K9) at the promoter region of clock gene Dbp and DBP mRNA expression are reduced in epididymal adipose tissue, (ii) binding of DBP to the promoter region of peroxisome proliferator-activated receptor (Ppar)-γ and mRNA expression of PPAR-γ1sv were decreased in preadipocytes and (iii) adiponectin secretion was decreased, leading to the impaired insulin sensitivity.Research design and methodsThe present study was undertaken to evaluate whether such the changes in visceral adipose tissue were detected in patients with DM2. We obtained omental and mesenteric adipose tissue during surgery of lymph node dissection for gastric and colorectal cancers, and investigated these variables in adipose tissue (omental from gastric cancer; 13 non-DM, 12 DM2: mesenteric from colorectal cancer; 12 non-DM, 11 DM2).ResultsAcetylation of histone H3K9 at the promoter region of Dbp and DBP mRNA expression in omental, but not in mesenteric adipose tissue were significantly lower in DM2 than in patients without DM. PPAR-γ mRNA expression in omental adipose tissue was also lower in patients with DM2, but not in mesenteric adipose tissue.ConclusionsThe changes in DBP-PPAR-γ axis observed in mice with diabetes were also detected in patients with DM2. Because adiponectin secretion is reported to be enhanced through the PPAR-γ-related mechanism, this study supports the hypothesis that omental adipose tissue is involved in the mechanism of DM2.


Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 1715-P
Author(s):  
KATHERINE ROBERTS-THOMSON ◽  
RYAN D. RUSSELL ◽  
DONGHUA HU ◽  
TIMOTHY M. GREENAWAY ◽  
ANDREW C. BETIK ◽  
...  

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 1973-P
Author(s):  
CLARISSA STRIEDER-BARBOZA ◽  
CARMEN G. FLESHER ◽  
LYNN M. GELETKA ◽  
ROBERT W. OROURKE ◽  
CAREY N. LUMENG

Author(s):  
Ida K.B. Rasmussen ◽  
Emilie H. Zobel ◽  
Rasmus S. Ripa ◽  
Bernt J. von Scholten ◽  
Viktor R. Curovic ◽  
...  

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