[Experimental testicular fibrosis and atrophy induced by intratesticular propylene glycol injection]

Fifty-four 15 day old male Wistar rats were given single intratesticular injection of experimental preparations which contained formaldehyde, xylocaine and epinephrine diluted in propylene glycol (FXEP); xylocaine in propylene glycol (XP): epinephrine in propylene glycol (EP) propylene glycol (P); formaldehyde in 0.1 M phosphate buffer solution (F); an one control group. The group of rats that were given FXEP underwent testicular weight reduction; body weight and size were not affected. Also the treatment with P produced atrophy and fibrosis in testis and a more severe testicular weight reduction. The sclerosing effect of P treatment was more satisfactory than treatment with FXEP, and apparently no one affected body weight and size, thus, this could be a safe, easy and inexpensive method for non surgical castration.