Effects of acyclovir on renal function

Silvia Campos-Bilderback, A. C. Seguro, K. R. Cesar, A. S. Rocha

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The renal effects of acyclovir (100 mg/kg body weight i.p. for 7 days) were studied in rats. All animals became polyuric and presented an increase in blood urea nitrogen and fractional excretion of sodium and potassium. During hypotonic saline infusion, the acyclovir-treated rats showed higher distal fractional delivery compared to normal rats (27.8 ± 4.7 vs. 11.3 ± 0.9%, p < 0.01) and a lower ratio of free-water clearance to distal sodium delivery (33.5 ± 7.8 vs. 57.2 ± 3.9%, p < 0.02). Following hypertonic saline infusion, the ratio of osmolar to inulin clearance was higher in acyclovir rats (47.8 ± 7.4%) than in normal rats (27.0 ± 4.8%), whereas the ratio of free-water reabsorption to osmolar clearance was lower in the acyclovir rats (13.6 ± 4.6 vs. 38.2 ± 3.2%, p < 0.01). These findings suggest an effect of acyclovir on the proximal tubule, thick ascending limb and/or inner medullary collecting duct (IMCD). In vitro measurements of 3H2O permeability of perfused IMCD of normal rats showed that vasopressin (50 μU/ ml) added to the bath increased the diffusional water permeability (43.4 ± 4.8 vs. 105.6 ± 9.1 x 10-5 cm/s), while in acyclovir rats, the control value (58.8 ± 9.1 x 10-5 cm/s) did not increase significantly in the presence of vasopressin (71.3 ± 13.6 x 10 -5 cm/s). These results suggest that high doses of acyclovir produce azotemia and an abnormal function of the proximal tubule and thick ascending limb associated with resistance to vasopressin of the IMCD.

Original languageEnglish (US)
Pages (from-to)74-79
Number of pages6
JournalNephron
Volume62
Issue number1
StatePublished - 1992
Externally publishedYes

Fingerprint

Acyclovir
Kidney
Vasopressins
Water
Permeability
Extremities
Sodium
Azotemia
Inulin
Blood Urea Nitrogen
Baths
Potassium
Body Weight

Keywords

  • Acyclovir
  • Inner medullary collecting duct
  • Proximal tubule
  • Thick ascending limb of Henle

ASJC Scopus subject areas

  • Nephrology

Cite this

Campos-Bilderback, S., Seguro, A. C., Cesar, K. R., & Rocha, A. S. (1992). Effects of acyclovir on renal function. Nephron, 62(1), 74-79.

Effects of acyclovir on renal function. / Campos-Bilderback, Silvia; Seguro, A. C.; Cesar, K. R.; Rocha, A. S.

In: Nephron, Vol. 62, No. 1, 1992, p. 74-79.

Research output: Contribution to journalArticle

Campos-Bilderback, S, Seguro, AC, Cesar, KR & Rocha, AS 1992, 'Effects of acyclovir on renal function', Nephron, vol. 62, no. 1, pp. 74-79.
Campos-Bilderback S, Seguro AC, Cesar KR, Rocha AS. Effects of acyclovir on renal function. Nephron. 1992;62(1):74-79.
Campos-Bilderback, Silvia ; Seguro, A. C. ; Cesar, K. R. ; Rocha, A. S. / Effects of acyclovir on renal function. In: Nephron. 1992 ; Vol. 62, No. 1. pp. 74-79.
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AB - The renal effects of acyclovir (100 mg/kg body weight i.p. for 7 days) were studied in rats. All animals became polyuric and presented an increase in blood urea nitrogen and fractional excretion of sodium and potassium. During hypotonic saline infusion, the acyclovir-treated rats showed higher distal fractional delivery compared to normal rats (27.8 ± 4.7 vs. 11.3 ± 0.9%, p < 0.01) and a lower ratio of free-water clearance to distal sodium delivery (33.5 ± 7.8 vs. 57.2 ± 3.9%, p < 0.02). Following hypertonic saline infusion, the ratio of osmolar to inulin clearance was higher in acyclovir rats (47.8 ± 7.4%) than in normal rats (27.0 ± 4.8%), whereas the ratio of free-water reabsorption to osmolar clearance was lower in the acyclovir rats (13.6 ± 4.6 vs. 38.2 ± 3.2%, p < 0.01). These findings suggest an effect of acyclovir on the proximal tubule, thick ascending limb and/or inner medullary collecting duct (IMCD). In vitro measurements of 3H2O permeability of perfused IMCD of normal rats showed that vasopressin (50 μU/ ml) added to the bath increased the diffusional water permeability (43.4 ± 4.8 vs. 105.6 ± 9.1 x 10-5 cm/s), while in acyclovir rats, the control value (58.8 ± 9.1 x 10-5 cm/s) did not increase significantly in the presence of vasopressin (71.3 ± 13.6 x 10 -5 cm/s). These results suggest that high doses of acyclovir produce azotemia and an abnormal function of the proximal tubule and thick ascending limb associated with resistance to vasopressin of the IMCD.

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