Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Remedy for overactive bladder comprising acetic acid anilide derivative as the active ingredient

a technology of acetic acid anilide and active ingredient, which is applied in the direction of biocide, drug composition, animal repellent, etc., can solve the problems of not always achieving satisfactory clinical results, and achieve the effect of improving symptoms and reducing symptoms

Inactive Publication Date: 2009-04-09
ASTELLAS PHARMA INC
View PDF15 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]The characteristic feature of the present invention is that the active ingredient of the present invention mitigates especially the frequent occurrence of urinary urgency of a patient and number of times of urination and state of urination are made into a more normal state. It goes without saying that overactive bladder in the present invention includes not only that as a result of benign prostatic hyperplasia but also that accompanied with urinary urgency, urinary incontinence and pollakiuria.
[0046]Thus, the active ingredient of the present invention shows a strong bladder relaxation action in “isolated rat bladder smooth muscle relaxation test”, decreases the contraction frequency of rhythmic bladder contraction on a dose-depending manner in “rat rhythmic bladder contraction measurement test” and prolongs the micturition interval in “micturition function measurement test on cyclophosphamide-induced overactive bladder model rat” whereby it is clinically useful as a remedy for overactive bladder. In addition to overactive bladder as a result of benign prostatic hyperplasia, it is also able to be used as a remedy for overactive bladder accompanied with urinary urgency, urinary incontinence and pollakiuria.Example 4Formulation ExampleFormulation Example for Oral Agent
[0049]As mentioned hereinabove, (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide or a salt thereof which is an active ingredient of the present invention showed a significantly strong relaxation action as compared with the control compound in “isolated rat bladder smooth muscle relaxation test”. Further, it decreased the contraction frequency of rhythmic bladder contraction on a dose-dependent manner in “rat rhythmic bladder contraction measurement test”. Still further, it prolonged the micturition interval of cyclophosphamide-induced overactive bladder model rat in “micturition function measurement test on cyclophosphamide-induced overactive bladder model rat”.

Problems solved by technology

However, there are intractable cases showing resistance to such compounds and there are side effects caused by anticholinergic agents such as urinary dysfunction and dry mouth and, therefore, it is the current status that satisfactory clinical results are not always achieved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Remedy for overactive bladder comprising acetic acid anilide derivative as the active ingredient
  • Remedy for overactive bladder comprising acetic acid anilide derivative as the active ingredient
  • Remedy for overactive bladder comprising acetic acid anilide derivative as the active ingredient

Examples

Experimental program
Comparison scheme
Effect test

example 1

Isolated Rat Bladder Smooth Muscle Relaxation Test

Test Method

[0032]The test was conducted by referring to The Journal of Urology, 1999, volume 161, page 680.

[0033]Male rats of Wistar strain of 10 to 11 weeks age were sacrificed by depletion, whole bladder was isolated by laparotomy and bladder sections each being in a size of about 3×10 mm were prepared in a nutrient solution which was well oxygenated with 95% O2 and 5% CO2 (Krebs-Henseleit solution (118.4 mM NaCl, 4.7 mM KCl, 1.2 mM KH2PO4; 1.2 mM MgSO4, 2.5 mM CaCl2, 25.0 mM NaHCO3 and 11.1 mM glucose)). The section was hung in a Magnus tube in which a nutrient solution (Krebs-Henseleit solution) of 37° C. into which 95% O2 and 5% CO2 were aerated, stabilized for 30 to 60 minutes with a load of 1 g and 10−6 M carbachol (CCh) or 40 mM potassium chloride (KCl) was repeatedly applied thereto whereupon it was confirmed that reactivity to CCh or KCl became almost constant. After contraction by 10−6 M CCh or 40 mM KCl was induced and th...

example 2

Rat Rhythmic Bladder Contraction Measurement Test

Test Method

[0036]The test was conducted by referring to European Journal of Pharmacology, 2000, volume 407, page 175.

1. Measuring Method

[0037]Female rats (225 to 290 g) of Wistar strain was used for the test. Under anesthetization with urethane, right and left ureters were ligated and cut and, after that, a polyethylene cannula was inserted from external urinary meatus and fixed. One end of the fixed cannula was connected to a pressure transducer via a three-way cock and pressure in the bladder was measured. Another end thereof was connected to a syringe pump and a physiological saline solution was continuously infused at a constant rate into bladder whereupon rhythmic bladder contraction was induced. The continuous infusion of a physiological saline solution was stopped after a rhythmic bladder contraction was noted. After the rhythmic bladder contraction was stabilized, drug or vehicle was administered from a catheter for administra...

example 3

Test for Measurement of Urination Function of Model Rat Suffering from Overactive Bladder Induced by Cyclophosphamide

[0042]Overactive bladder model rats induced by cyclophosphamide were prepared by referring to British Journal of Pharmacology, 2000, volume 130, page 331 and the following test was conducted.

Test Method

1. Measuring Method

[0043]Female rats (220 to 230 g) of Wistar strain were used for the test. Under anesthetization with pentobarbital sodium, a catheter for infusion of physiological saline solution and for measurement of pressure in bladder was inserted into bladder from the top of the bladder and fixed while a catheter for administration of a drug was inserted into carotid vein and fixed. Cyclophosphamide (CYP) was administered into abdominal cavity and, after being recovered, the rats were returned to a feeding cage. On the next day of the operation, one end of the catheter inserted into bladder of the rat was connected to a syringe pump via a three-way cock and a ph...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
temperatureaaaaaaaaaa
temperatureaaaaaaaaaa
temperatureaaaaaaaaaa
Login to View More

Abstract

(R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide or its salt shows a potent bladder relaxation effect in “isolated rat bladder smooth muscle relaxation test”, dose-dependently lowers the contraction frequency of rhythmic bladder contractions in “rat rhythmic bladder contraction measurement test” and, moreover, prolongs the urination intervals in “urination functions measurement test on cyclophosphamide-induced overactive bladder model rat”. Owing to these effects, the above compound is useful as a remedy for overactive bladder.

Description

TECHNICAL FIELD[0001]This invention relates to a remedy for overactive bladder comprising (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetic acid anilide or a salt thereof as an active ingredient.BACKGROUND ART[0002]Bladder of mammals is under a dual control of autonomic nerve and detrusor relaxes via an adrenaline β receptor by stimulation of sympathetic nerve upon urination while, upon excretion of urine, it contracts via a muscarine receptor by stimulation of parasympathetic nerve. As a remedy for overactive bladder resulted when the dual control as such is unbalanced, anticholinergic agents such as propiverine hydrochloride and oxybutynin hydrochloride have been mostly used at present. However, there are intractable cases showing resistance to such compounds and there are side effects caused by anticholinergic agents such as urinary dysfunction and dry mouth and, therefore, it is the current status that satisfactory clinical results are not always ach...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/426A61P13/10A61P13/00C07D277/40
CPCC07D277/40A61K31/426A61P13/00A61P13/02A61P13/08A61P13/10
Inventor TAKASU, TOSHIYUKISATO, SHUICHIUKAI, MASASHIMARUYAMA, TATSUYA
Owner ASTELLAS PHARMA INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com