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The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
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Anatomy of the Genitourinary System II: Bladder and Urethra01:19

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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...
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Urinary Bladder01:23

Urinary Bladder

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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.
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Microbiota of the Urogenital Tract01:28

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The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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Disorders of the Urinary System01:20

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The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
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Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
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Related Experiment Video

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Expression of Transgenes in Native Bladder Urothelium Using Adenovirus-Mediated Transduction
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Pathogenesis of bladder exstrophy: A new hypothesis.

Satish Kumar K V1, Abraham Mammen1, Karthikeya K Varma1

  • 1Department of Neonatal and Pediatric Surgery, Malabar Institute of Medical Sciences, Calicut, Kerala, India.

Journal of Pediatric Urology
|August 29, 2015
PubMed
Summary
This summary is machine-generated.

Bladder exstrophy repair outcomes improve with a new hypothesis on its cause. This study proposes a novel theory for bladder exstrophy (BE) pathogenesis, aiming to refine surgical techniques for better functional results.

Keywords:
Bladder exstrophy epispadias complex (BEEC)Bladder exstrophy pathogenesisFetal deformationFetal disruptionLevator hammockMobilization of pelvic musculature in bladder exstrophy

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Area of Science:

  • Pediatric Surgery
  • Developmental Biology
  • Urology

Background:

  • Classical bladder exstrophy (BE) is a rare congenital condition affecting 1 in 30,000 live births.
  • Current surgical treatments for BE yield variable outcomes, highlighting the need for standardized, effective techniques.
  • Understanding the precise pathogenetic mechanism of BE is crucial for improving surgical correction.

Purpose of the Study:

  • To investigate the underlying cause of bladder exstrophy.
  • To propose a new hypothesis regarding the pathogenesis of bladder exstrophy.
  • To inform the development of improved surgical strategies for bladder exstrophy repair.

Main Methods:

  • A comprehensive literature review was conducted to explore existing hypotheses on BE etiology.
  • A new hypothesis for bladder exstrophy pathogenesis was formulated based on anatomical observations.
  • The proposed hypothesis serves as a foundation for a two-stage surgical technique involving pelvic musculature mobilization.

Main Results:

  • A review of 38 children with bladder exstrophy over 10 years showed functional outcomes.
  • At a mean follow-up of 4.5 years, 82% of patients achieved functional urinary continence.
  • The study observed that bladder exstrophy epispadias complex (BEEC) appears to be a disruption rather than a purely embryological defect.

Conclusions:

  • The exact embryogenesis of bladder exstrophy remains unknown.
  • A novel working hypothesis suggests BEEC is a post-embryogenic disruption centered on pubic diastasis.
  • This hypothesis aims to guide future research for elucidating BE pathogenesis and refining surgical interventions.