AI Article Synopsis
- Cystatin C (CysC) serves as a marker for estimating glomerular filtration rate (GFR) and may be influenced by both GFR and its production levels.
- Significant amounts of CysC were found in adipose tissue, suggesting that fat cells (adipocytes) may contribute to the levels of CysC in the bloodstream.
- In laboratory studies, growth hormone (GH) and triiodothyronine (T) were shown to increase the production of CysC in adipocytes, indicating that these hormones can boost CysC accumulation in cell cultures.
Article Abstract
Cystatin C (CysC) is a marker for estimation of glomerular filtration rate (GFR). CysC levels may depend not only on clearance/GFR but possibly also on changes in production. Our studies on tissue distribution of CysC protein in mice showed that adipose tissue expresses significant amounts of CysC, suggesting that adipocytes could contribute to circulating CysC levels in vivo. As growth hormone (GH) and triiodothyronine (T) increase both GFR and CysC (increased in acromegaly and hyperthyroidism) in vivo, we studied whether they could increase CysC production in 3T3-L1 adipocytes in vitro. CysC accumulated in culture media of 3T3-L1 adipocytes in a time-dependent fashion. GH and T both (10 nmol/l) increased accumulation of CysC, to 373 ± 14 and 422 ± 20, respectively, vs 298 ± 10 ng per well over 4 days in controls. Thus, GH and T enhance the production of CysC by adipocytes in vitro.
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| http://dx.doi.org/10.1016/j.mce.2018.12.004 | DOI Listing |
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