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Long‐term renal tubular damage in intrauterine growth‐restricted rats
Author(s) -
Murano Yayoi,
Shoji Hiromichi,
Hara Taichi,
Ikeda Naho,
Endo Amane,
Nishizaki Naoto,
Shimizu Toshiaki
Publication year - 2018
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1111/ped.13570
Subject(s) - medicine , ligation , urinary system , creatinine , intrauterine growth restriction , endocrinology , uterine artery , cystatin c , urology , kidney , gestation , pregnancy , biology , genetics
Background Intrauterine growth restriction (IUGR) has been shown to be associated with increased risk of renal disease or hypertension in later life. Glomerular dysfunction, however, has mainly been reported, and limited information is available to link IUGR with renal tubular damage. The aim of this study was therefore to investigate urinary markers of tubular damage in a rat model of IUGR induced by bilateral uterine artery ligation. Methods Pregnant Sprague–Dawley rats underwent bilateral uterine artery ligation, while the control group underwent sham surgery. Results Birthweight was reduced, and urinary β2‐microglobulin (β2‐MG)‐, cystatin C (Cys‐C)‐, and calbindin‐to‐creatinine ratios were significantly higher at weeks 4 and 8 in the IUGR group compared with the control group. These urinary markers were not significantly different at week 16 between the two groups. Increased excretion of urinary β2‐MG, Cys‐C, and calbindin was observed in IUGR rats at ≥8 weeks of age. Conclusion Children born with IUGR are at increased risk for renal tubular damage.