- Endothelin b receptor deficiency is associated with an increased rate of neuronal apoptosis in the dentate gyrus. Ehrenreich, H., Nau, T.R., Dembowski, C., Hasselblatt, M., Barth, M., Hahn, A., Schilling, L., Sirén A-L, n.u.l.l., Brück, W. Neuroscience (2000)