This study aimed at evaluating the protective effects of a herbal medication (
Tutukon) on the
hyperoxaluria induced apoptotic changes and crystal deposition in renal tubular epithelium in rat model. 60 male wistar rats were divided into three different groups (each group n: 20). In Group I severe
hyperoxaluria was induced by
ethylene glycol (EG) (0.75%) administration for 28 days. In Group II, in addition to
hyperoxaluria induction, animals were treated with
Tutukon for 28 days. Group III animals constituted the controls without any specific medication and/or intervention. While the presence and degree of crystal deposition in the tubular lumen were examined histopathologically under light microscopy, tubular apoptotic changes were evaluated using immunohistochemical staining for
cysteine-
aspartic acid protease-3 (Caspase-3) and
tumor necrosis factor alpha (TNF-α) positivity on days 14 and 28, respectively. Evaluation of apoptotic changes by
Caspase-3 positivity showed that while the majority of animals undergoing EG only showed evident apoptotic changes (n: 9),
Tutukon application demonstrated a significant limitation with limited or no apoptosis (n: 7) in these animals. Similar data were noted for
TNF alpha expression; while apoptotic changes were evident in 8 (80%) in Group I animals, limited changes were noted in
Tutukon Group (n: 2). Regarding crystal deposition despite evident changes in Group I (9 animals), like apoptotic alterations, it was again significantly limited in animals receiving
Tutukon (4 animals). Renal tubular crystal deposition and apoptotic changes induced by
hyperoxaluria play a role in the pathogenesis of
urolithiasis and the limitation of these changes might be instituted by
Tutukon as a result of its
antioxidant and antiinflammatory effects.