Abstract
In 70 experiments, the existence of a circulating renal growth factor was confirmed by 9.3% stimulation of 3H-thymidine into the DNA of renal fragments incubating for 90 min in the presence of sera from 20-hour unilaterallly nephrectomized rats compared to sera from 20-hour sham-operated rats (p<0.001). Dialysis (7.4%, p<0.01) or removal of albumin (11.8%, p<0.001) from sera of both sham-operated and unilaterally nephrectomized rats did not appreciably change the magnitude of the statistically significant stimulation. When albumin-free sera were placed in boiling water for 1-3 min to coagulate protein, the stimulation was still significantly different from control (5%, p < 0.05). Addition of sera from unilaterally nephrectomized rats (20 h) to isolated nuclei, even isolated nuclei removed from growing kidneys (72 h after unilateral nephroctomy), faileds to enhance DNA synthesis significantly.
Original language | English (US) |
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Pages (from-to) | 139-144 |
Number of pages | 6 |
Journal | Kidney and Blood Pressure Research |
Volume | 6 |
Issue number | 3 |
DOIs | |
State | Published - 1983 |
Keywords
- DNA synthesis
- Isolated nuclei
- Partial characterization
- Renal growth
- Renotropin
ASJC Scopus subject areas
- Nephrology
- Cardiology and Cardiovascular Medicine