Detection of diffuse glomerular lesions in rats: I. Comparisons of conventional radioactive agents
Conventional renal diagnostic agents, (/sup 131/I)hippuran, (/sup 99m/Tc)glucoheptonate (GHA), and (/sup 99m/Tc) dimercaptosuccinate (DMS) were compared with (/sup 99m/Tc) or (/sup 111/In) diethylenetriaminepentaacetic (DTPA) for the detection of glomerular damage in rats compared with controls. The glomerular lesions were induced by the i.v. injection of puromycin aminonucleoside (PA) 9 days before the radionuclide studies, a model of spontaneous minimal change glomerulonephritis in humans. Computer-generated early renal uptake of (/sup 99m/Tc)DTPA or GHA correlated with the glomerular filtration rate (GFR) quantitated by biexponential plasma clearance of DTPA administered by single i.v. injection. The early renal uptake of hippuran and DMS correlated poorly with GFR as assessed by DTPA clearance. However, the 2-hr renal retention of DMS correlated well with the DTPA clearance. None of the parameters measured with (131I)hippuran correlated well with DTPA clearance, probably because of decreased protein plasma binding of hippuran secondary to hypoproteinemia in this experimental model. It was concluded that none of these agents was superior to labeled DTPA for the detection of glomerular damage in this experimental model.
- Research Organization:
- Upstate Medical Center, Syracuse, NY
- OSTI ID:
- 5206096
- Journal Information:
- J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 4; ISSN JNMEA
- Country of Publication:
- United States
- Language:
- English
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62 RADIOLOGY AND NUCLEAR MEDICINE
AMINO ACIDS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARBOXYLIC ACIDS
CHELATING AGENTS
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DISEASES
DRUGS
DTPA
ELECTRON CAPTURE RADIOISOTOPES
GLOMERULI
HOURS LIVING RADIOISOTOPES
INDIUM 111
INDIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KIDNEYS
LABELLED COMPOUNDS
MAMMALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOPHARMACEUTICALS
RADIOPROTECTIVE SUBSTANCES
RATS
RODENTS
TECHNETIUM 99
TECHNETIUM ISOTOPES
UROGENITAL SYSTEM DISEASES
VERTEBRATES
YEARS LIVING RADIOISOTOPES