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Estimation of Nephron Number in Whole Kidney using the Acid Maceration Method
Published on: May 22, 2019
Human nephron number: implications for health and disease
John F Bertram1, Rebecca N Douglas-Denton, Boucar Diouf
1Department of Anatomy and Developmental Biology, Monash University Clayton, Melbourne, Victoria, 3800, Australia. john.bertram@monash.edu
Pediatric Nephrology (Berlin, Germany)
|May 24, 2011
Summary
Human kidneys exhibit significant variation in nephron number, largely determined at birth. Lower nephron endowment is linked to higher blood pressure and cardiovascular risks later in life.
Area of Science:
- Nephrology
- Developmental Biology
- Public Health
Background:
- Human kidneys display substantial variability in total nephron count, averaging 900,000 to 1 million, but ranging from 200,000 to over 2.5 million.
- Glomerulosclerosis contributes to nephron loss with age, influenced by factors like blood pressure and kidney disease.
- Most nephron number variation is established developmentally, with no new nephrons forming after 36 weeks of gestation.
Purpose of the Study:
- To update current knowledge on human nephron number.
- To explore associations between nephron endowment and adult health outcomes.
- To investigate the developmental determinants of nephron number.
Main Methods:
- Review of existing studies on human nephron number.
- Analysis of correlations between birth weight, nephron number, and blood pressure.
- Examination of associations between low birth weight, nephron endowment, and cardiovascular disease.
Main Results:
- Significant individual variation exists in nephron number, primarily determined by developmental factors.
- A positive correlation is observed between birth weight and nephron number.
- An inverse association is noted between nephron number and blood pressure.
Conclusions:
- Individuals born with lower nephron endowment may face increased risks for hypertension and cardiovascular disease.
- Understanding nephron number variations is crucial for assessing lifelong renal and cardiovascular health.
- Developmental factors significantly influence nephron endowment and subsequent health trajectories.
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