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Type 2 diabetes mellitus (T2DM) is a heterogeneous disorder characterized by defects in insulin secretion and action and obesity plays an important role in the deterioration of glucose metabolism. In the present study we evaluated the degree of insulin resistance and first-phase insulin secretion of β-cell in obese subjects with normal glucose tolerance (NGT), impaired glucose tolerance (IGT), and...
In order to characterize the potential causative effects of interleukin-18 (IL-18) on insulin resistance, we measured glucose uptake in 3T3-L1 adipocytes treated with mouse recombinant IL-18. IL-18 surprisingly enhanced, rather than reduced insulin-mediated glucose uptake in adipocytes. Moreover IL-18 could counteract the glucose uptake suppression caused by tumor necrosis factor α in 3T3-L1 adipocytes...
Overproduction of proinflammatory factors is associated with obesity and diabetes. Interleukin (IL)-18 as a member of IL-1 cytokine family is increased in obese, in diabetic, and even in polycystic ovary syndrome (PCOS) patients. In the present study we evaluated the association of serum IL-18 levels with insulin resistance in PCOS women. Forty-two PCOS women and 38 control subjects were enrolled...
Our previous work has described the gene expression patterns of human visceral adipose tissue (VAT) at the transcriptome level and reported that the strongly expressed genes in VAT showed an uneven distribution throughout the genome. The aim of the present work was to focus on the unclassified genes and known expressed sequence tags (ESTs) strongly expressed in VAT and analyze their structure and...
To understand fully the physiologic functions of visceral adipose tissue and to provide a basis for the identification of novel genes related to obesity and insulin resistance, the gene expression profiling of human visceral adipose tissue was established by using cDNA array. The characterization and chromosome localization of 400 expressed sequence tags (ESTs) strongly expressed in visceral adipose...
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