Influence of Some Anti-Inflammatory, Antipyretic and Analgesic Agents on Urinary Enzyme Level in Rats

Tsurumi, Kaito; Abe, Akira; Nozaki, Masakatsu; Fujimura, Hajimè

doi:10.2131/jts.3.1

Cited by 6 publications

(1 citation statement)

References 18 publications

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“…Bucolome, a nonsteroidal anti-inflammatory drug, is usually administered in large doses (600 -1200 mg); its plasma concentration is typically about 300 M, and it is primarily eliminated by urine excretion (Kakemi et al, 1970;Yashiki et al, 1971a,b;Chiba et al, 1985). It has been reported that bucolome does not affect urinary enzyme activities, suggesting that any nephrotoxicity of bucolome would be very low-level (Tsurumi et al, 1978). Also, bucolome has been used to treat nephrotic syndrome patients in warfarin-bucolome combination therapy (Sato et al, 1991).…”

Section: Discussionmentioning

confidence: 99%

Bucolome, a Potent Binding Inhibitor for Furosemide, Alters the Pharmacokinetics and Diuretic Effect of Furosemide: Potential for Use of Bucolome to Restore Diuretic Response in Nephrotic Syndrome

Takamura¹,

Maruyama²,

Chosa³

et al. 2005

Drug Metab Dispos

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ABSTRACT:To determine whether bucolome (5-n-butyl-1-cyclohexyl-2,4,6-trioxoperhydropyrimidine), a nonsteroidal anti-inflammatory agent, can reverse diuretic resistance of furosemide in patients with nephrotic syndrome, we examined the inhibitory effect of bucolome on the protein binding of furosemide in serum and urine. Bucolome significantly inhibited the protein binding of furosemide not only in serum but also in urine of preparation albumin (UPA), which mimics urinary albumin concentration in patients with nephrotic syndrome by ultrafiltration method. The binding percentage of furosemide to albumin was approximately 70% in UPA. With coadministration of bucolome to healthy volunteers, renal clearance of furosemide was increased, reflecting the increase of the free fraction of furosemide in serum. Furthermore, coadministration of bucolome caused a significant increase of urine volume and sodium concentration in urine. Even at higher urine levels of furosemide, the inhibitory effect of bucolome on the protein binding of furosemide in UPA remains constant, and changes in pH at weakly acidic pH levels (pH 5.5-6.5) did not alter the inhibitory effect of bucolome. Interestingly, coadministration of bucolome with furosemide in doxorubicin (Adriamycin)-induced nephrotic syndrome model rats alleviated the diuretic resistance. These results suggest that bucolome has a potent inhibitory effect on the protein binding of furosemide in the urine and can partially restore the diuretic response of furosemide in patients with nephrotic syndrome by increasing the free fraction of furosemide at the site of action.

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Section: Discussionmentioning

confidence: 99%