Endocrine Abstracts

One of the proposed mechanisms responsible for Diabetes mellitus (DM)-associated erectile (ED) dysfunction is overactivity of RhoA/ROCK signalling. Because statins may decrease RhoA activation, we investigated whether atorvastatin ameliorated DM-induced ED in alloxan-treated (100 mg/kg) rabbits (in vitro studies) and streptozotocin-treated (STZ, 50 mg/kg) rats (in vivo studies). A subgroup of diabetic animals received atorvastatin 5 mg/kg per daily 2 weeks before...

A previous study demonstrate that chronic tadalafil administration (2 mg/kg per day) was able to prevent some, but not all, penile alterations induced by long-term (3 months) bilateral cavernous neurotomy (BCN) in the rat. In particular, in vitro acetylcholine responsiveness and reduced eNOS and nNOS expression were not preserved, while PDE5 down-regulation, along with muscle/fiber ratio and hypoxygenation (hypoxyprobe) were significantly restored by chronic tadalafil (...

Human bladder contraction mainly depends on Ca2+ influx, via L-type voltage-gated Ca2+ channels, and on RhoA/Rho-kinase contractile signalling, a pathway up-regulated in overactive bladder (OAB) syndrome. Elocalcitol (Elo) is a vitamin D receptor agonist inhibiting RhoA/Rho-kinase signalling in rat and human bladder, shown to ameliorate OAB symptoms in a clinical study. Since in normal bladder from Sprague–Dawley (SD) rats Elo treatment delayed the c...