4-Aminopyridine Improves Lower Urinary Tract Symptoms in a Patient With Benign Prostatic Hyperplasia and Downbeat Nystagmus Syndrome.
10.5213/inj.2014.18.4.221
- Author:
Michael STRUPP
1
;
Katharina FEIL
;
Stanislavs BARDINS
;
Raphaela WAIDELICH
Author Information
1. Department of Neurology, University Hospital Munich, Campus Grosshadern, Munich, Germany. michael.strupp@med.uni-muenchen.de
- Publication Type:Case Report
- Keywords:
4-Aminopyridine;
Prostatic Hyperplasia;
Lower Urinary Tract Symptoms;
Drug Therapy;
Neurogenic Urinary Bladder
- MeSH:
4-Aminopyridine*;
Aminopyridines;
Animals;
Axons;
Drug Therapy;
Humans;
Lower Urinary Tract Symptoms*;
Nervous System Diseases;
Neurons;
Potassium;
Potassium Channel Blockers;
Prostate;
Prostatic Hyperplasia*;
Rats;
Urinary Bladder;
Urinary Bladder, Neurogenic
- From:International Neurourology Journal
2014;18(4):221-225
- CountryRepublic of Korea
- Language:English
-
Abstract:
Aminopyridines are potassium channel blockers that increase the excitability of nerve cells and axons; therefore, they are widely used to treat different neurological disorders. Here we present a patient with idiopathic downbeat nystagmus and lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia who was treated with the sustained-release form of 4-aminopyridine (4-AP). During treatment with 4-AP, the LUTS improved. This improvement was monitored by using uroflowmetry and the International Prostate Symptom Score. A significant improvement of symptoms was observed in relation to the voided volume. This included an improved emptying of the bladder without an increase in residual urine. In animal studies, both nonselective K+ channel blockade and selective voltage-sensitive potassium blockade by 4-AP resulted in increased contraction on rat detrusor strips. To our knowledge, this is the first clinical observation of the mode of action of 4-AP in urological symptoms in humans.
