BACKGROUND Cystatin C (CysC) is an alternative marker to creatinine for estimation of the glomerular filtration rate (GFR). Hormones such as thyroid hormones and glucocorticoids are known to have an impact on CysC. In this study, we examined the effect of growth hormone (GH) on CysC in patients with acromegaly undergoing transsphenoidal surgery. METHODS Creatinine, CysC, GH and insulin-like g...

There is currently no direct, facile method to determine total-body skeletal muscle mass for the diagnosis and treatment of skeletal muscle wasting conditions such as sarcopenia, cachexia, and disuse. We tested in rats the hypothesis that the enrichment of creatinine-(methyl-d(3)) (D(3)-creatinine) in urine after a defined oral tracer dose of D(3)-creatine can be used to determine creatine pool...

In the present study, we investigated the effects of the aqueous extract of Mucuna pruriens against gentamicin (100 mg kg -1 per day for six days) induced oxidative stress and nephrotoxicity in rats. Administration of gentamicin to rats induced a marked renal failure, characterized by a significant increase in urine volume and serum creatinine and urea levels. There was a significant decr...

Several authors have recently re-emphasized the positive interference of acetoacetate in the measurement of creatinine using the Jaff6 reaction [1-3]. On theoretical grounds, the measurement of creatinine in the presence of acetoacetate should be possible using a kinetic method [4]. In practice, however, measurements by some instruments employing a kinetic Jaff6 method suffer from marked interf...

A new continuous-flow automated enzymatic method suitable for the direct determination of creatinine in physiological samples is described. The proposed system utilizes an on-line gas predialysis unit in conjunction with a flow-through enzyme reactor coil and a potentiometric ammonia detector. The enzyme reactor contains immobilized creatinine iminohydrolase (EC 3.5.4.21) which converts creatin...

in the present study, we investigated the effects of the aqueous extract of mucuna pruriens against gentamicin (100 mg kg -1 per day for six days) induced oxidative stress and nephrotoxicity in rats. administration of gentamicin to rats induced a marked renal failure, characterized by a significant increase in urine volume and serum creatinine and urea levels. there was a significant decrease i...

The increase of urinary fractional excretion of phosphorus (uFEP) may indicate phosphorus retention before the onset of hyperphosphatemia in the early stages of chronic kidney disease (CKD). The hypothesis of this study is whether uFEP may increase during the early stage of CKD as a compensatory mechanism to prevent hyperphosphatemia as well as whether hyperphosphatemia in the late stages is as...

Results: The mean urea nitrogen was 11 mg/dL in serum, 11 mg/dL in peritoneal fluid, and 469 mg/dL in urine. The mean creatinine was .9 mg/dL in serum, 1.0 mg/dL in peritoneal fluid, and 141 mg/dL in urine. Urea nitrogen and creatinine values in peritoneal fluid and serum were essentially identical. Urine urea nitrogen and creatinine values were significantly greater than serum and peritoneal v...