Journal
JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
Volume 19, Issue 8, Pages 1538-1546Publisher
AMER SOC NEPHROLOGY
DOI: 10.1681/ASN.2007101101
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Funding
- National Kidney Foundation
- Veterans Administration Career Development Award [DK39261-16, DK 69921, DK51265]
- Department of Veterans Affairs
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lschemia- or toxin-induced acute kidney injury is generally thought to affect the cells of the proximal tubule, but it has been difficult to define the involvement of other tubular segments because of the widespread damage caused by ischemia/reperfusion or toxin-induced injury in experimental models. For evaluation of whether thick ascending limb (TAL)-specific epithelial injury results in acute kidney injury, a novel transgenic mouse model that expresses the herpes simplex virus 1 thymidine kinase gene under the direction of the TAL-specific Tamm-Horsfall protein promoter was generated. After administration of gancyclovir, these mice demonstrated apoptosis only in TAL cells, with little evidence of neutrophil infiltration. Compared with control mice, blood urea nitrogen and creatinine levels were at least five-fold higher in the transgenic mice, which also developed oliguria and impaired urinary concentrating ability. These findings suggest that acute injury targeted only to the TAL is sufficient to cause severe acute kidney injury in mice with features similar to those observed in humans.
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