Kidney, Renal Tubule - Cytoplasmic Alteration
comment:Variable cytoplasmic vacuolation in outer cortical tubules of certain strains of male mice is a normal finding ( Figure 1 ). They are thought to represent autophagic vacuoles associated with the normal degeneration of these cells. Some chemicals may decrease the number of vacuoles in the renal tubular epithelium ( Figure 2 ).
recommendation:Cytoplasmic vacuolation that is present as a normal background finding in male mice does not have to be diagnosed. If a decrease in cytoplasmic vacuoles is seen following treatment in male mice (compared with controls), then this finding should be diagnosed as "cytoplasmic alteration" and given a severity grade.
related links:Kidney, Renal Tubule - Vacuolation, Cytoplasmic
Ormos J, Sztriha L, Bóti ZS, Kuthy E. 1975. Electron microscopic and cytochemical study of the vacuoles of regenerating renal tubular cells. Br J Exp Pathol 55:477-483. Abstract: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2072774/
Seely JC. 1999. Kidney. In: Pathology of the Mouse: Reference and Atlas (Maronpot RR, Boorman GA, Gaul BW, eds). Cache River Press, Vienna, IL, 207-234. Abstract: http://www.cacheriverpress.com/books/pathmouse.htm
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