Document Detail


GFR determined by nonradiolabeled iothalamate using capillary electrophoresis.
MedLine Citation:
PMID:  9370179     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Traditional measurements of glomerular filtration rate (GFR) in clinical practice include the measurement of serum creatinine or creatinine clearance. Increasing evidence concerning the limitation of these measurements in clinical practice and clinical trials has resulted in efforts to develop technologies that improve measurement of GFR. Recent efforts in that regard have used radioisotopic labeling of markers of GFR, such as 125I-iothalamate, and 51Cr-ethylenediaminetetraacetic acid. Limitations of these technologies include radiation exposure as well as cost considerations for the management of radioisotopes, including safety, disposal, mailing, and deteriorating activity that results in short shelf life. We report a test that used 0.5 mL Conray dye injected subcutaneously and subsequent measurement of the nonisotopic (cold) iothalamate by capillary electrophoresis in blood and urine. GFR using cold iothalamate compared with standard clearance using 125I-iothalamate was 0.99. The method is cost-effective and allows for avoiding exposure to isotopes, as well as problems such as the disposal and short shelf life of isotopes. This technology could allow for replacement of 125I-iothalamate as a marker for GFR.
Authors:
D M Wilson; J H Bergert; T S Larson; R R Liedtke
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  American journal of kidney diseases : the official journal of the National Kidney Foundation     Volume:  30     ISSN:  0272-6386     ISO Abbreviation:  Am. J. Kidney Dis.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1997-12-05     Completed Date:  1997-12-05     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8110075     Medline TA:  Am J Kidney Dis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  646-52     Citation Subset:  IM    
Affiliation:
Division of Nephrology and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Contrast Media* / administration & dosage,  economics
Cost-Benefit Analysis
Drug Interactions
Electrophoresis, Capillary / economics,  methods,  statistics & numerical data
Evaluation Studies as Topic
Glomerular Filtration Rate*
Humans
Iodine Radioisotopes / administration & dosage,  diagnostic use
Iothalamic Acid / administration & dosage,  diagnostic use*,  economics
Kidney Function Tests / economics,  methods,  statistics & numerical data
Middle Aged
Time Factors
Chemical
Reg. No./Substance:
0/Contrast Media; 0/Iodine Radioisotopes; 2276-90-6/Iothalamic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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