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Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
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Uremic mouse model to study vascular calcification and "inflamm-aging".

Markus Tölle1, Cornelia Henkel1, Jaqueline Herrmann1

  • 1Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Cooperate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany.

Journal of Molecular Medicine (Berlin, Germany)
|August 2, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a new adenine-induced mouse model for chronic uremia, revealing significant vascular calcification and inflammation. This model aids in understanding disease progression and testing therapies for cardiovascular complications.

Keywords:
CalcificationCardiovascularChronic inflammationChronic renal insufficiencyInflammationVascular calcification

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Area of Science:

  • Cardiovascular Biology
  • Nephrology
  • Animal Models

Background:

  • Vascular calcification and chronic inflammation are key risk factors for cardiovascular mortality, particularly in chronic uremia patients.
  • Current treatment options for preventing rapid disease progression are limited.

Purpose of the Study:

  • To evaluate an adenine-based mouse model for studying medial vessel calcification and senescence-associated secretory phenotype (SASP) in aortic tissue.
  • To unravel molecular pathogenesis and provide a model for therapy testing in chronic uremia.

Main Methods:

  • Dietary adenine administration to DBA2/N mice to induce chronic uremia.
  • Analysis of uremia blood markers, renal fibrosis, crystal deposits, medial vessel calcification, and elastin organization.
  • Assessment of osteogenic markers (Bmp-2, Sox-9), senescence marker (p21), and pro-inflammatory proteins (serum amyloid A, Il-1β, Il-6).

Main Results:

  • Adenine feeding induced stable chronic uremia with elevated blood urea nitrogen, calcium, creatinine, alkaline phosphatase, and parathyroid hormone.
  • Uremia led to renal fibrosis, crystal deposits, moderate-to-severe medial vessel calcification, and elastin disorganization.
  • Increased expression of osteogenic markers (Bmp-2, Sox-9), senescence marker (p21), and pro-inflammatory proteins (serum amyloid A, Il-1β, Il-6) was observed.

Conclusions:

  • The adenine-induced mouse model effectively replicates chronic uremia, vascular calcification, and inflammation.
  • This model offers a valuable platform for investigating signaling pathways in vascular disease and for preclinical therapeutic intervention studies.