Nephropathy in the mature pig after the irradiation of a single kidney: A comparison with the immature pig

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Int. J. Radiat. Oncol., Biol. Phys.; (United States)

DOI:https://doi.org/10.1016/0360-3016(89)90957-7· OSTI ID:5764870

Robbins, M E; Campling, D; Rezvani, M; Golding, S J; Hopewell, J W

The right kidney of 11 mature 10-month-old Large White female pigs was irradiated with single doses of 9.8-14.0 Gy of 60Co gamma rays. Individual kidney glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) were measured using 99mTc-DTPA and 131I-hippuran renography for periods up to 24 weeks after irradiation. Renal function was assessed either as a functional index, FI (FI = irradiated/unirradiated kidney function), or as the individual kidney GFR and ERPF. The radiation-induced changes after the irradiation of a single kidney (unilaterally irradiated--UI) of mature pigs were compared with those previously observed in 14-week-old immature pigs. Irradiation resulted in a dose-dependent reduction in the FI for both GFR and ERPF. However, these reductions were significantly less than those previously seen in immature pigs. Within 2 weeks of irradiation GFR increased in both the irradiated and the unirradiated kidneys in each animal, compared with unirradiated age-matched control kidneys. No marked changes in renal hemodynamics were seen in mature animals after a single dose of 9.8 Gy. This was in marked contrast to the pronounced reduction in the GFR and ERPF in the irradiated kidney previously observed in immature animals irradiated with an equivalent single dose of X rays. After higher doses, the irradiated kidney in mature pigs showed a dose-dependent reduction in GFR and ERPF. However, the extent of this reduction was significantly less than that seen in immature animals. There was no apparent difference in the response of the unirradiated kidneys in mature or immature pigs. The ED50 values, based on a probit fit to the data for the proportion of functional tests in which the irradiated kidney showed a greater than or equal to 50% reduction in GFR or ERPF, were higher in the mature animals.

• Research Organization: Univ. of Oxford (England)
• OSTI ID: 5764870
• Journal Information: Int. J. Radiat. Oncol., Biol. Phys.; (United States), Vol. 16:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
62 RADIOLOGY AND NUCLEAR MEDICINE
KIDNEYS
BIOLOGICAL RADIATION EFFECTS
UROGENITAL SYSTEM DISEASES
DIAGNOSIS
AGE DEPENDENCE
BIOMEDICAL RADIOGRAPHY
BLOOD FLOW
COBALT 60
COMPARATIVE EVALUATIONS
DOSE-RESPONSE RELATIONSHIPS
DTPA
DYNAMIC FUNCTION STUDIES
GAMMA RADIATION
HIPPURAN
IODINE 131
RADIATION INJURIES
SWINE
X RADIATION
AMINO ACIDS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
BODY
CARBOXYLIC ACIDS
CHELATING AGENTS
COBALT ISOTOPES
CONTRAST MEDIA
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DISEASES
DOMESTIC ANIMALS
DRUGS
ELECTROMAGNETIC RADIATION
INJURIES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IODINE ISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MAMMALS
MEDICINE
MINUTES LIVING RADIOISOTOPES
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
RADIOLOGY
RADIOPROTECTIVE SUBSTANCES
VERTEBRATES
YEARS LIVING RADIOISOT
560152* - Radiation Effects on Animals- Animals
550601 - Medicine- Unsealed Radionuclides in Diagnostics