Unilateral nephrectomy 24 hours after bilateral kidney irradiation reduces damage to the function and structure of the remaining kidney

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Radiation Research

DOI:https://doi.org/10.2307/3578826· OSTI ID:70216

Liao, Z X; Travis, E L ^[1]

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1. Univ. of Texas M.D. Anderson Cancer Center, Houston, TX (United States)

The effect of unilateral nephrectomy 24 h after irradiation on renal function and death with renal insufficiency as well as histopathological changes in the kidney was assessed. Single doses totaling 8-18 Gy were given bilaterally to unanesthetized female and male C3Hf/Kam mice. Renal function damage was assayed by blood urea nitrogen (BUN) and hematocrit (Hct). Histological damage was quantified by two parameters: kidney area and number of surviving tubule cells along the renal capsule. The number of glomeruli was scored as an indication of the number of nephrons. Changes in the two functional parameters did not appear sooner after irradiation in the nephrectomized mice than in the non-nephrectomized mice. Rather, less impairment of function was measured by both parameters in the nephrectomized mice but only after radiation doses greater than 12 Gy. The LD{sub 50} at 424 days after irradiation was also higher in the nephrectomized mice than in the mice receiving only irradiation, 13.98 Gy (95% confidence limits = 12.03, 15.93) and 11.71 Gy (95% confidence limits = 10.4, 13.1), respectively, in agreement with the data on function. Unilateral nephrectomy alone induced a 10% increase in size of the contralateral kidney. The dose-response curve for the kidney area from nephrectomized mice was parallel to and displaced above that for non-nephrectomized mice, indicating that the increase in renal mass occurred independent of and was not compromised by radiation. Unilateral nephrectomy alone induced no increase in the number of proximal tubules in the contralateral kidney. 30 refs., 9 figs., 1 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 70216
• Journal Information: Radiation Research, Journal Name: Radiation Research Journal Issue: 3 Vol. 139; ISSN RAREAE; ISSN 0033-7587
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
DELAYED RADIATION EFFECTS
DOSE-RESPONSE RELATIONSHIPS
GLOMERULI
HYPERTROPHY
KIDNEYS
MICE
NEPHRECTOMY
RADIATION DOSES
RADIATION INJURIES
RESPONSE MODIFYING FACTORS
TUBULES
X RADIATION