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Related Concept Videos

Whole Body Regeneration01:33

Whole Body Regeneration

Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential; even...
Urinary Bladder01:23

Urinary Bladder

The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
The Micturition Reflex01:26

The Micturition Reflex

Urination, or micturition involves the coordination of the bladder's detrusor muscle and two sphincters to ensure controlled bladder emptying.
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...
Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
Physiology of Urine Formation01:24

Physiology of Urine Formation

Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...
Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
Regeneration
All animals have varying degrees of...

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Related Experiment Video

Updated: Jul 13, 2026

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
10:19

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Published on: August 9, 2012

Changing concepts of bladder regeneration.

Akihiro Kanematsu1, Shingo Yamamoto, Osamu Ogawa

  • 1Department of Urology, Kyoto University, Kyoto, Japan.

International Journal of Urology : Official Journal of the Japanese Urological Association
|August 8, 2007
PubMed
Summary

Urinary bladder regeneration research has advanced, but clinical utility is limited by graft issues. New strategies focus on diverse bladder diseases, moving beyond surgical augmentation to address functional and pathological conditions.

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A Decentralized (Ex Vivo) Murine Bladder Model with the Detrusor Muscle Removed for Direct Access to the Suburothelium during Bladder Filling
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A Decentralized (Ex Vivo) Murine Bladder Model with the Detrusor Muscle Removed for Direct Access to the Suburothelium during Bladder Filling

Published on: November 28, 2019

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Last Updated: Jul 13, 2026

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
10:19

Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

Published on: August 9, 2012

A Decentralized (Ex Vivo) Murine Bladder Model with the Detrusor Muscle Removed for Direct Access to the Suburothelium during Bladder Filling
06:36

A Decentralized (Ex Vivo) Murine Bladder Model with the Detrusor Muscle Removed for Direct Access to the Suburothelium during Bladder Filling

Published on: November 28, 2019

Area of Science:

  • Regenerative Medicine
  • Urology
  • Biomaterials Science

Background:

  • Significant research efforts focus on urinary bladder regeneration using various grafts and augmentation techniques.
  • Despite progress, few methods demonstrate definitive clinical utility due to challenges in graft integration and function.

Purpose of the Study:

  • To review recent advancements and evolving strategies in urinary bladder regeneration.
  • To highlight the shift towards diverse approaches addressing specific pathological bladder conditions.

Main Methods:

  • Analysis of studies employing animal-derived or synthetic grafts for bladder augmentation.
  • Review of regenerative strategies involving cell transplantation and growth factors.
  • Examination of alternative approaches for functional bladder diseases and cancer treatment.

Main Results:

  • Graft absorption and shrinkage due to insufficient vascularization and smooth muscle regeneration remain significant hurdles.
  • Emerging strategies include urothelium-covered neobladders for cancer and diverse treatments for incontinence and fibrotic bladders.
  • Research is expanding to encompass muscle remodeling and neural control for conditions like overactive bladder.

Conclusions:

  • Urinary bladder regeneration faces challenges in achieving full functional integration and long-term graft stability.
  • The field is diversifying, with a growing focus on tailored regenerative strategies for a wider spectrum of bladder pathologies.
  • Future research directions emphasize basic biological understanding and therapeutic interventions for functional bladder disorders.