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Epithelial and mesenchymal compartments of the developing bladder and urethra display spatially distinct gene expression patterns.
Dev Biol
January 2025
Institute for Stem Cell Science and Regenerative Medicine (iBRIC-inStem), GKVK-Post, Bellary Road, Bengaluru, Karnataka, 560065, India. Electronic address:
Article Synopsis
- The lower urinary tract, consisting of the bladder and urethra, develops from the cloaca, with the bladder forming from the urogenital sinus and the urethra extending into the genital tubercle.
- Engineering a fully functional bladder lining is challenging, and the urethral epithelium's immune roles are under-researched, highlighting the need for a better understanding of the epithelial and mesenchymal interactions that drive development.
- This study identified specific genes involved in bladder and urethra development in mice, revealing differences in gene expression patterns related to sex and offering insights for future regenerative therapies.
Development and growth of cavernosal sinusoidal endothelia in the external genitalia of human fetuses.
Ann Anat
February 2025
Department of Urology, Graduate School of Medicine and Dentistry, Hiroshima University School of Medicine, Hiroshima, Japan.
Background: There is little information about when and how cavernosal sinusoidal endothelia develop in the external genitalia of fetuses.
Methods: We examined histological sections of erectile tissue in 37 human fetuses (25 males and 12 females) whose gestational age (GA) ranged from 8 to 40 weeks.
Results: The sinusoidal lumen was filled with blood in the glans of the penis and clitoris at a GA of 10-11 weeks, and in the corpus spongiosum at a GA of 15-16 weeks.
A case of posterior urethral valve diagnosed by ultrasound in antenatal and pathology: A case report.
Medicine (Baltimore)
December 2024
Department of Pathology, Fukuang General Hospital of Liaoning Health Industry Group, Fushun, Liaoning Province, China.
Rationale: Posterior urethral valve is a rare disease, prenatal diagnosis and prognosis evaluation are particularly important.
Patient Concerns: A 25-year-old pregnant woman was found enhanced parenchymal echo in both kidneys, subcapsule urinary cyst formation in both kidneys, bladder enlargement of the fetus during prenatal ultrasonography at 25 W + 4 of gestation. It was accompanied by fetal pericardial effusion and oligohydramnios.
Outcomes of children with isolated antenatal hydronephrosis.
Pediatr Int
December 2024
Department of Pediatric Nephrology, School of Medicine, Manisa Celal Bayar University, Manisa, Turkey.
Background: Antenatal hydronephrosis (ANH) is one of the most common abnormalities detected during prenatal ultrasound. There is significant variability in the postnatal management of ANH. Our objective was to report the outcomes of patients with ANH, spontaneous resolution rates, surgical intervention rates, and factors contributing to these parameters.
View Article and Find Full Text PDFIndications and Outcomes of Fetal Cystoscopy for Lower Urinary Tract Obstruction: A Comprehensive Review.
Prenat Diagn
January 2025
Division of Maternal-Fetal Medicine, Department of Maternal and Fetal Medicine, Obstetrics and Gynecology, Miller School of Medicine, University of Miami, Miami, Florida, USA.
Fetal lower urinary tract obstruction (LUTO) encompasses a spectrum of rare congenital anomalies affecting the fetal urinary system, leading to significant morbidity and mortality. This condition, arising from various anatomical anomalies such as posterior urethral valves (PUV), urethral atresia, and cloacal malformations, disrupts normal urine flow, resulting in secondary complications such as pulmonary hypoplasia and renal impairment. Current management strategies, including fetal vesicoamniotic shunting (VAS) and fetal cystoscopy, aim to alleviate obstruction and mitigate associated risks.
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