Ultrastructural evaluation of urine alkalinization versus hydration on colistin-induced nephrotoxicity.
Hum Exp Toxicol
; 38(12): 1366-1377, 2019 Dec.
Article
de En
| MEDLINE
| ID: mdl-31280613
ABSTRACT
OBJECTIVES:
Colistin is a vital antibiotic used in multidrug-resistant infections. Its most important side effect is nephrotoxicity. Colistin is a weak acid. This study aims to evaluate whether urine alkalinization is protective in the nephrotoxicity of colistin.METHODS:
Twenty-eight male Sprague-Dawley rats were divided into groups. Group I (n = 4) was injected with intramuscular distilled water twice a day for 7 days. Group II (n = 8) was injected with 750,000 IU/kg/day colistin for 7 days. Group III (n = 8) was injected with the same dose of colistin after their urinary pH was ≥7 through the addition of bicarbonate in their drinking water. Group IV (n = 8) was injected with the same dose of colistin after their urine density fell below 1010 through the addition of NaCl molds in their food and 12.6 mg/L NaCl in their drinking water.RESULTS:
According to tubular degenerations (scored 0-5), group I scored 0, group II scored 4.25, group III scored 2, and group IV scored 1.5. In groups III and IV, protection was achieved (p = 0.001). The bicarbonate group was not superior to the NaCl group (p = 0.789). In transmission electron microscopy, group III had more microvilli integrity and autophagic vacuoles compared to group IV. Group IV had mitochondrial swelling and cristae lysis. A lower urine density was related to lower tubular scores (p = 0.001).CONCLUSIONS:
Colistin was highly nephrotoxic without protection. Light microscopy findings revealed that urinary alkalinization and NaCl hydration were similarly protective. Urine alkalinization further prevents ultrastructural changes as revealed by electron microscopy.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Urine
/
Hydrogénocarbonates
/
Chlorure de sodium
/
Colistine
/
Maladies du rein
/
Antibactériens
Limites:
Animals
Langue:
En
Journal:
Hum Exp Toxicol
Sujet du journal:
TOXICOLOGIA
Année:
2019
Type de document:
Article
Pays d'affiliation:
Turquie