cystatin c is a 13 kd basic protein that is a member of the cystatin superfamily of cysteine protease inhibitors. the cystatin c gene seems to be a house keeping gene, which is compatible with a stable production rate of cystatin c by most cells. this protein is freely filtered through the glomerulus and almost completely reabsorbed and catabolized by proximal tubular cells. because of these ch...

Filtration of the drilling mud is one of it's most important parameters, especially when drilling-in producing formation. Decrease of filtration characteristics allows reducing both solid and liquid phases's penetration zone into the formation. The study of the effect of the weighting-bridging agent's fractional composition on the filtration rate allows selecting of optimal composition of the s...

The recent article about estimated glomerular filtration rate (GFR) by Levey and colleagues (1) is remarkable. The authors suggest that the new equation may still have some bias and especially may have less precision in patients with GFRs greater than 60 mL/min per 1.73 m 2 . This is even more important if the GFR is greater than 90 mL/min per 1.73 m 2 . In the paper's Methods section, Levey an...

conclusions our results indicated a reversible increase in rbv bioavailability after telaprevir exposure, which might be linked to the impairment of the gfr. this also suggests a rbv-telaprevir pharmacological interaction, a possible source of severe anemia observed under triple therapy. these results suggest that rbv pharmacological monitoring may be clinically relevant, especially in the cont...

background elevated serum gamma-glutamyltransferase (ggt) is predictive of various cardiovascular (cv) risk factors including chronic kidney disease (ckd). elevated serum ggt has been recognized in smokers who are likely to develop ckd, but no study has focused on serum ggt and ckd in smokers. objectives the aim of this study was to clarify the associations between cigarette consumption, elevat...

background assessment of glomerular filtration rate (gfr) by common creatinine-based methods is potentially inaccurate in patients with cirrhosis. cirrhotic patients have several underlying conditions that contribute to falsely low serum creatinine concentrations, even in the presence of moderate to severe renal impairment. therefore creatinine-based methods usually overestimate true gfr in the...

conclusions functional renal impairment in diseases caused by hcv was more important than in diseases caused by hbv. the egfr was statistically lower in cirrhosis secondary to hcv than in hcv chronic hepatitis. results hbv chronic hepatitis, hcv chronic hepatitis, and cirrhosis secondary to these viruses were associated with a reduction of the gfr. the egfr was higher in patients with hbv chron...

conclusions our study shows a relationship between cimt and renal parameters, including egfr and albuminuria. this study confirms the importance of intensive examinations for early detection of atherosclerosis and treatment of risk factors. patients and methods this cross-sectional study was included 205 patients with type 2 diabetes mellitus (t2dm). we recorded clinical and biochemical data su...

background: in this study, the early effects of percutaneous nephrolithotomy (pcnl) on glomerular filtration rate (gfr) was assessed in different postoperative times and likewise, we determined the correlation of different variables with significant postoperative gfr drop  after pcnl. m aterials and methods: patient records of 486 cases that had undergone pcnl from january 2010 to october 2011 ...