Cited by 27Genetic and Kidney Cyst DiseasesCystic Fibrosis Research AdvancesTuberous Sclerosis Complex Research

Inactivation of Bardet-Biedl syndrome genes causes kidney defects

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Guo, Deng-Fu, Beyer, Andreas M., Yang, Baoli, Nishimura, Darryl Y., Sheffield, Val C., Rahmouni, Kamal·2011·American Journal of Physiology-Renal Physiology

Abstract

Bardet-Biedl syndrome (BBS) is a rare hereditary autosomal recessive disease associated with several features including obesity, hypertension, and renal abnormalities. The underlying mechanisms of renal defects associated with BBS remain poorly defined. We examined the histological, molecular, and functional renal changes in BBS mouse models that have features of the human disorder. Interestingly, obese hypertensive Bbs4 −/− mice exhibited inflammatory infiltration and renal cysts, whereas the obese normotensive Bbs2 −/− mice had only minor inflammatory infiltration. Accordingly, the expression level of inducible nitric oxide synthase was elevated in the kidney of both BBS mice with a more marked increase in Bbs4 −/− mice. In contrast, endothelial nitric oxide synthase expression was decreased in Bbs4 −/−, but not Bbs2 −/−, mice. Similarly, the expression levels of transient receptor potential vanilloid 1 and 4 channels as well as β- and γ-subunits of epithelial Na channel were significantly reduced only in the kidney of Bbs4 −/− mice. Metabolic studies revealed changes in urine output and urinary concentrations of creatinine, blood urea nitrogen, sodium, and potassium with a more pronounced effect in Bbs4 −/− mice. Finally, we found that calorie restriction which prevented obesity in BBS mice reversed the morphological and molecular changes found in Bbs2 −/− and Bbs4 −/− mice, indicating the kidney abnormalities associated with BBS are obesity related. These findings extend our understanding of the function of BBS proteins and emphasize the importance of these proteins in renal physiology.

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Crossref · 10.1152/ajprenal.00150.2010

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  • Obesity is associated with several other changes in the kidney that promote the development of hypertension as well as chronic kidney disease and end-stage renal disease.

    “Obesity is associated with several other changes in the kidney that promote the development of hypertension as well as chronic kidney disease and end-stage renal disease.”

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  1. Grassi G, 2009, J Nephrol, 22, 190

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Authors
Guo, D.-F., Beyer, A. M., Yang, B., Nishimura, D. Y., Sheffield, V. C., & Rahmouni, K.
Affiliations
  • Departments of 1Internal Medicine,
  • Obstetrics and Gynecology,
  • Pediatrics and Genetics (US)
  • University of Iowa (US)
Corresponding author
Rahmouni, Kamal
Venue
American Journal of Physiology-Renal Physiology
Published
2011-02
Volume
300
Issue
2
Pages
F574-F580
ISSN
  • 1522-1466 (ISSN-L)
  • 1931-857X
OpenAlex
W2167250584
Cited by
27
References
26
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 4 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 3 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
0.72
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Renal Physiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Iowa Research Online (The University of Iowa) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (5 T32-HL-07121-33, HL-084207, P01HL084207, T32HL007121)
  • National Eye Institute (R01EY011298, EY011298, EY-017168, R01EY017168)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cystic Fibrosis Research Advances
  • Health Sciences › Medicine › Physiology › Tuberous Sclerosis Complex Research
Keywords
Bardet-Biedl syndrome, BBS4, BBS2, obesity, hypertension, renal cysts, inducible nitric oxide synthase, endothelial nitric oxide synthase, TRPV1, TRPV4, epithelial sodium channel, renal inflammation, caloric restriction, renal physiology, mouse model
MeSH terms
Animals, Blood Urea Nitrogen, Creatinine, Female, Hypertension, Kidney, Male, Microtubule-Associated Proteins, Obesity, Oliguria, Potassium, Proteins, Sodium, Bardet-Biedl Syndrome, Caloric Restriction, TRPV Cation Channels, Mice, Nitric Oxide Synthase Type III, Epithelial Sodium Channels

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