Estimation of total glomerular number using an integrated disector method in embryonic and postnatal kidneys

Area of Science:

• Nephrology
• Developmental Biology
• Medical Imaging

Background:

• Congenital Anomalies of the Kidney and Urinary Tract (CAKUT) are a primary cause of pediatric renal failure.
• Reduced nephron number is linked to adult hypertension and kidney disease.
• Accurate nephron quantification is crucial for understanding kidney development and disease.

Purpose of the Study:

• To present an updated, digitized method for accurate nephron number quantification.
• To provide a rapid, cost-effective alternative to traditional stereological methods.
• To facilitate research into the origins of human kidney disease using mouse models.

Main Methods:

• Developed the integrated disector method, a digitized version of the physical disector/fractionator technique.
• Utilized free, open-source Fiji software for stereological measurements.
• Applied the method to embryonic and post-natal mouse kidneys.

Main Results:

• The integrated disector method accurately quantitates nephron number.
• This digital approach is significantly faster and more cost-effective than the traditional method.
• The method is adaptable for stereological analysis in other organ systems.

Conclusions:

• The integrated disector method offers an accurate, efficient, and accessible tool for nephron counting.
• This advancement aids research into CAKUT and the long-term consequences of low nephron endowment.
• The method's adaptability broadens its potential applications in biological research.