About My Health Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Mirabegron Effective and Well Tolerated for Overactive Bladder, Says Research

by Kathy Jones on March 5, 2013 at 8:45 PM
Font : A-A+

 Mirabegron Effective and Well Tolerated for Overactive Bladder, Says Research

There is an urgent need for new therapies for overactive bladder.

In a new phase III trial mirabegron, a β3-adrenoceptor agonist, given once daily for 12 weeks, reduced the frequency of incontinence episodes and number of daily urinations, and improved urgency and nocturia in adults with overactive bladder (OAB) compared to those in a placebo group. The incidence of common adverse events (hypertension, urinary tract infection, headache, nasopharyngitis) was similar in the mirabegron and placebo groups in this study. Rates of dry mouth and constipation were similar in the drug and placebo groups. The study is published in the Journal of UrologyŪ.

Advertisement

"Mirabegron is a first in class therapeutic agent with a mechanism of action distinct from that of antimuscarinic agents," says urologist Victor W. Nitti, MD, of the NYU Langone Medical Center. "While antimuscarinic agents are the current pharmacological mainstay for OAB, some patients have a suboptimal response or experience side effects such as dry mouth or constipation. The result is that a high proportion of patients on antimuscarinic drugs discontinue therapy, with only 25% remaining on therapy at one year. We need an alternative therapy for some of these patients."

This randomized, parallel group, double-blind phase III study comprising 1329 patients was conducted at 132 sites in the U.S. and Canada. Those eligible for the study voided 8 or more times daily and experienced 3 or more urgency episodes with or without incontinence over a 3-day period. After 2 weeks of receiving placebo, 454 patients were randomized to continue to receive placebo, 442 were given 50 mg mirabegron and 433 received 100 mg mirabegron daily for 12 weeks.
Advertisement

Compared to the placebo group, both mirabegron treatment groups showed statistically significant (p <0.05) reductions from baseline to final visit in the mean number of incontinence episodes and micturitions per 24 hours. Interestingly, the voided volume per micturition more than doubled, from an average of 7.0 ml/micturition to about 18 ml/micturition in the mirabegron groups. This finding supports the hypothesis that unlike antimuscarinic drugs, β3-adrenergic agonists work by promoting urine storage and increasing bladder capacity, according to the authors.

Urgency and nocturia were reduced in those treated with mirabegron compared to placebo. Significant improvements were seen in quality of life measures, and the magnitude of the treatment response was similar to that seen with other OAB agents.

The frequency of dry mouth was low and similar in all groups. Two percent or fewer of each group reported constipation. No significant differences were noted among the groups for any other treatment-emergent adverse event, including acute urinary retention, cardiac arrhythmia, or hypertension, and there were no significant hematologic or serum chemistry abnormalities.

"With its balanced efficacy, safety, and tolerability profile, mirabegron could provide an alternative therapeutic option for OAB, particularly in patients whose OAB is inadequately addressed by current antimuscarinic therapy," says Dr. Nitti.



Source: Eurekalert
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Advertisement
News Category
What's New on Medindia
Turmeric: Magic Ingredient to Keep you Healthy in Winter
Top 7 Benefits of Good Oral Hygiene
Healthy and Safer Thanksgiving 2021
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.


Recommended Reading
Birth Defects - Infections
Birth defects are abnormalities, which occur before the birth of the baby and can be caused due to ....
Hemoptysis Symptom Evaluation
Hemoptysis requires immediate medical attention since it may signify serious medical conditions ......

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use