Inflammatory tubulointestitial nephritis (TIN), either as a primary or
as a secondary event, plays an essential role in the development of a
ll forms of chronic renal failure. Experimental models of TIN should h
elp in understanding TIN in humans. As in experimental glomerulopathie
s, the target antigen can be a kidney structural antigen, from the tub
ular basement membrane (TBM) or not, or a foreign antigen. While some
models are due to deposits of free antibodies or circulating immune co
mplexes, many others involve cell-mediated immunity. This last aspect
explains the importance and the originality of experimental TIN.