Related Experiment Video
Updated: Aug 10, 2026

Intracavernosal Pressure Recording to Evaluate Erectile Function in Rodents
Published on: June 6, 2018
Rho-kinase as a potential target for the treatment of erectile dysfunction
K Chitaley1, R C Webb, T M Mills
1Dept. of Physiology, University of Michigan, Ann Arbor, Michigan, USA.
Abstract:
Erectile dysfunction is a condition that is estimated to affect more than 30 million men in the United States alone. The prevalence of erectile dysfunction is increased with age and is often secondary to diseases such as depression, hypertension and diabetes. Causes of erectile dysfunction include physical injury to the cavernosum and abnormal cerebral and peripheral nervous system functioning. However, many cases of erectile dysfunction are the result of dysfunctional signaling in the cavernosal vasculature. This article will detail the important role of a vasoconstrictor mechanism mediated by the small G-protein RhoA and a downstream serine/threonine kinase, Rho-kinase, in the maintenance of penile flaccidity. Recent evidence demonstrates that inhibition of endogenous Rho-kinase initiates an erectile response in an in vivo rat model. These initial findings introduce a novel potential therapeutic approach for the treatment of erectile dysfunction.
More Related Videos
Related Concept Videos
Amplifying Signals via Enzymatic Cascade
Receptor Tyrosine Kinases
Nitric Oxide Signaling Pathway
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...

