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Effects of anemia and uremia and a combination of both on cardiovascular structures

J S Jürgensen1, R Grimm, K Benz

  • 1Department of Pathology, University of Erlangen-Nürnberg, Erlangen, Germany.

Kidney & Blood Pressure Research
|July 15, 2010
PubMed

Insights

Chronic renal failure (CRF) and anemia both cause cardiac changes. When combined, these conditions significantly worsen left ventricular hypertrophy (LVH) in rats, but do not further impact arterial structure.

Area of Science:

  • Nephrology
  • Cardiology
  • Pathology

Background:

  • Cardiovascular complications are a leading cause of death in chronic renal failure (CRF) patients.
  • Chronic anemia is a known complication of CRF and a cardiovascular risk factor.
  • The study investigated whether uremia and anemia have additive or supra-additive effects on cardiovascular alterations.

Purpose of the Study:

  • To determine if uremia and anemia act additively or supra-additively on cardiovascular changes.
  • To assess the combined impact of CRF and anemia on cardiac structure and function.

Main Methods:

  • Thirty Sprague-Dawley rats underwent subtotal nephrectomy (SNX) or sham operation.
  • Groups were subdivided into anemic (hemoglobin 10 g/dL) and untreated.
  • Evaluated blood pressure, echocardiography, and morphometrics over 16 weeks.

Main Results:

  • Heart rate and blood pressure remained similar across all groups.
  • Left ventricular end-diastolic pressure was elevated in untreated SNX and SNX+anemia groups.
  • Both anemia and SNX induced left ventricular hypertrophy (LVH); the combination resulted in significantly greater LVH.

Conclusions:

  • Anemia and CRF independently induce LVH and intramyocardial arteriolar thickening.
  • Combining anemia and CRF exacerbates LVH significantly.
  • No additional detrimental effects on intramyocardial structural alterations were observed when anemia and CRF were combined.
Abstract

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