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Antimicrobial Agents and Chemotherapy, May 1998, p. 1217-1221, Vol. 42, No. 5
College of Pharmacy,
Received 21 May 1997/Returned for modification 31 December
1997/Accepted 23 February 1998
Because the physiological changes that occur in patients with acute
renal failure could alter the pharmacokinetics of the drugs used to
treat the disease, the pharmacokinetics of DA-1131, a new carbapenem
antibiotic, were investigated after 1-min intravenous administration of
the drug (50 mg/kg of body weight) to control rats and rats with uranyl
nitrate-induced acute renal failure (U-ARF rats). The impaired kidney
function was observed in U-ARF rats on the basis of physiological
parameters observed by microscopy of the kidney and obtained by
chemical analysis of the plasma. After a 1-min intravenous infusion of
DA-1131, the concentrations in plasma and the total area under the
plasma concentration-time curve from time zero to time infinity
increased significantly in U-ARF rats compared with those in control
rats (13,000 versus 4,400 µg · min/ml). This was due to the
significantly slower total body clearance (CL) of DA-1131 (3.84 versus
11.4 ml/min/kg) from U-ARF rats than from control rats. The
significantly slower CL of DA-1131 from U-ARF rats was due to both
significantly slower renal clearance (0.000635 versus 4.95 ml/min/kg
because of a significant decrease in the 8-h urinary excretion of
unchanged DA-1131 [1.54 versus 43.8% of the intravenous dose] due to
impaired kidney function, as proved by the significant decrease in
creatinine clearance [0.0159 versus 4.29 ml/min/kg]) and
significantly slower nonrenal clearance (3.80 versus 6.34 ml/min/kg
because of a significant decrease in the metabolism of DA-1131 in the
kidney) in U-ARF rats. The amounts of DA-1131 recovered from all
tissues studied (except the kidneys) were significantly higher for
U-ARF rats than for control rats; however, the ratios of the amount in
tissue to the concentration in plasma (except those for the kidney,
small intestine, and spleen) were not significantly different between the two groups of rats, indicating that the affinity of DA-1131 for rat
tissues was not changed considerably in U-ARF rats.
0066-4804/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Pharmacokinetics of a New Carbapenem, DA-1131,
after Intravenous Administration to Rats with Uranyl Nitrate-Induced
Acute Renal Failure
*
Corresponding author. Mailing address: College of
Pharmacy, Seoul National University, San 56-1, Shinlim-Dong, Kwanak-Gu, Seoul 151-742, Korea. Phone: 82-2-880-7855. Fax: 82-2-889-8693. E-mail:
leemg{at}plaza.snu.ac.kr.
Antimicrobial Agents and Chemotherapy, May 1998, p. 1217-1221, Vol. 42, No. 5
0066-4804/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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