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272943 occurrences (No.93 in the rank) during 5 years in the PubMed. [cache]
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272943 occurrences (No.93 in the rank) during 5 years in the PubMed. [cache]
| 45) RAS activation has been causally implicated in oxidative stress induced by uric acid in 3T3-L1 adipocytes, suggesting a plausible mechanism through which hyperuricemia contributes to the pathogenesis of obesity-related cardiovascular diseases. |
| PMID:24671741 DOI:10.1007/s12020-014-0239-5 |
| 2015 Endocrine |
| * Uric acid induces oxidative stress via an activation of the renin-angiotensin system in 3T3-L1 adipocytes. |
| - Hyperuricemia is recently reported involving in various obesity-related cardiovascular disorders, especially hypertension. However, the underlying mechanisms are not completely understood. In the present study, we investigated whether uric acid upregulates renin-angiotensin system (RAS) expression in adipocytes. We also examined whether RAS activation plays a role in uric acid-induced oxidative stress in adipocytes. The adipocytes of different phenotypes were incubated with uric acid for 48 h, respectively. Losartan (10(-4) M) or captopril (10(-4) M) was used to block adipose tissue RAS activation. mRNA expressions of angiotensinogen (AGT), angiotensin-converting enzyme-1 (ACE-1), renin, angiotensin type 1 receptor (AT1R), and angiotensin type 2 receptor (AT2R) were evaluated with real-time PCR. Angiotensin II concentrations in supernatant were measured by ELISA. Intracellular reactive species (ROS) levels were measured by fluorescent probe DCFH-DA, DHR, or NBT assay. The uric acid upregulated both RAS (AGT, ACE1, renin, AT1R, and AT2R) mRNA expressions and angiotensin II protein secretion and caused a significant increase in ROS production in 3T3-L1 adipocytes. These effects could be prevented by RAS inhibitors, either losartan or captopril. RAS activation has been causally implicated in oxidative stress induced by uric acid in 3T3-L1 adipocytes, suggesting a plausible mechanism through which hyperuricemia contributes to the pathogenesis of obesity-related cardiovascular diseases. |
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--- WordNet output for acid ---