[Cardiac metastasis of renal cell carcinoma, a rare location]. / Métastase cardiaque du cancer du rein : site inhabituel.

The renal carcinoma is situated in the third rank of the urologic cancers. It is metastatic in a third of the cases, when we made the diagnosis of the cancer. Lungs, bone, the liver, the suprarenal gland and the brain stay metastatic sites of preference. Some metastatic locations are anecdotal and made the object of some publications. We report the case of a cardiac metastasis of renal carcinoma at an old patient 81 years old operated for cardiac tumor.

[Geldanamycin administration reduces the number of HSP86-positive germ cells in the mouse embryo: preliminary results]. / L'administration de geldanamycine réduit le nombre de gonocytes exprimant l'HSP86 chez l'embryon de souris: premiers résultats.

5 mg of Geldanamycin, an inhibitor of stress protein HSP86 which express on mammalian germ cells, were administered to E8 pregnant mice. E17 embryos were removed, and a quantitative analysis of HSP90-immunoreactive cells in the gonad was performed, in comparison to control embryos. First, we observed that the number of germ cells is lower in male than in female embryos, as well in control and experimental embryos. External features of experimental and control embryos did not display any difference. Embryos exposed to geldanamycin exhibit a significant decrease of immunoreactive germ cells. In two embryos, we observed a group of ectopic immunoreactive cells in the pelvic area. We conclude that geldanamycin inhibits germ cells migration, and suggest that this inhibition can lead to ectopic germ cell populations, similar to teratomas.