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Spectral Karyotyping to Study Chromosome Abnormalities in Humans and Mice with Polycystic Kidney Disease
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Polycystic kidney disease.

Peter C Harris1, Vicente E Torres

  • 1Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota 55905, USA. harris.peter@mayo.edu

Annual Review of Medicine
|October 25, 2008
PubMed
Summary
This summary is machine-generated.

Inherited kidney diseases like autosomal dominant polycystic kidney disease (ADPKD) and ARPKD involve genetic mutations affecting cilia. Understanding these cellular defects reveals potential therapeutic targets for cyst development.

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Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium
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Area of Science:

  • Nephrology
  • Genetics
  • Cell Biology

Background:

  • Inherited disorders frequently cause renal cyst development.
  • Autosomal dominant polycystic kidney disease (ADPKD) and ARPKD are key forms, impacting adults and neonates, respectively.
  • Mutations in PKD1/PKK2 (ADPKD) and PKHD1 (ARPKD) disrupt cilia function.

Purpose of the Study:

  • To summarize the genetic basis and cellular mechanisms of inherited polycystic kidney diseases (PKD).
  • To highlight the role of cilia and associated proteins in kidney and biliary tract epithelial differentiation.
  • To discuss potential therapeutic strategies emerging from understanding these diseases.

Main Methods:

  • Review of genetic mutations (PKD1, PKD2, PKHD1) and protein functions (polycystin-1, polycystin-2, fibrocystin).
  • Analysis of protein localization in primary cilia and basal bodies.
  • Examination of signaling pathways (Wnt, Hh) implicated in pathogenesis.

Main Results:

  • ADPKD and ARPKD result from mutations in specific genes, affecting cilia-localized proteins.
  • The polycystin complex acts as a mechanosensor, crucial for epithelial maintenance.
  • Fibrocystin interacts with polycystin-2, and both localize to cilia.
  • Syndromic forms of PKD involve broader developmental defects, implicating cilia and signaling pathways.

Conclusions:

  • Defective cellular processes in PKD highlight the critical role of cilia.
  • Understanding these mechanisms provides a basis for developing novel therapies.
  • Ongoing clinical trials are exploring these potential treatments for polycystic kidney diseases.