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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
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Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...
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Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney
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Evolutionary Nephrology.

Robert L Chevalier1

  • 1Department of Pediatrics, The University of Virginia, Charlottesville, VA.

Kidney International Reports
|August 29, 2017
PubMed
Summary
This summary is machine-generated.

Evolutionary medicine offers new insights into chronic kidney disease by examining ultimate causes, not just proximate ones. Understanding evolutionary trade-offs and environmental mismatches can reveal key factors driving kidney damage over a lifetime.

Keywords:
adaptationchronic kidney diseaseenergyevolutionlife historyprogression

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Area of Science:

  • Evolutionary medicine
  • Nephrology
  • Genomics
  • Epigenetics

Background:

  • Progressive kidney disease involves nephron loss and maladaptive repair processes.
  • Evolutionary medicine offers a framework to understand physiological responses through natural selection and environmental interactions.
  • Existing research focuses on proximate causes, yet effective treatments for slowing kidney disease remain elusive.

Purpose of the Study:

  • To explore how evolutionary principles, including environmental mismatch and trade-offs, contribute to the development of chronic kidney disease.
  • To integrate evolutionary medicine with molecular genetics, evo-devo, and life history theory for novel treatment strategies.
  • To explain variations in nephron number, heterogeneity, and injury susceptibility as evolutionary outcomes.

Main Methods:

  • Analysis of evolutionary adaptation to terrestrial environments and its impact on renal physiology.
  • Examination of life history trade-offs, such as fetal growth and APOL1 mutations, as risk factors for kidney disease.
  • Integration of genomic, epigenetic, and developmental biology findings with evolutionary medicine concepts.

Main Results:

  • Evolutionary adaptation led to a vulnerable, energy-intensive renal tubule and a challenging internal microenvironment.
  • Natural selection favors nephron maintenance during reproductive years, with a decline in senescence, impacting kidney integrity.
  • Identified risk factors like restricted fetal growth, APOL1 mutations, and Western diet reflect evolutionary trade-offs and environmental mismatches.

Conclusions:

  • Evolutionary medicine provides a complementary approach to understand the ultimate causes of chronic kidney disease.
  • Variations in nephron endowment and susceptibility to injury are rooted in evolutionary processes.
  • Combining evolutionary insights with developmental biology and life history theory may unlock new prevention and treatment strategies for kidney disease.