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Tertatolol: a beta-blocker with unique effects on human glomerular cell function

P Shultz1, L Raij

  • 1Renal Section (IIIJ), VA Medical Center, Minneapolis, Minn 55417.

Cardiology
|January 1, 1993
PubMed
Summary
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Tertatolol, a beta-blocker, inhibits human mesangial cell (HMC) proliferation by reducing 3H-thymidine incorporation, particularly when stimulated by growth factors. This study reveals tertatolol

Area of Science:

  • Nephrology
  • Pharmacology
  • Cell Biology

Background:

  • Tertatolol exhibits unique renal vasodilatory effects, impacting microcirculation.
  • Vasodilators often inhibit human mesangial cell (HMC) proliferation.
  • Investigating tertatolol's impact on HMC proliferation is warranted.

Purpose of the Study:

  • To determine the effects of tertatolol on human mesangial cell (HMC) proliferation.
  • To assess tertatolol's influence on 3H-thymidine incorporation in HMC.
  • To evaluate tertatolol's effect on angiotensin II-induced HMC contraction.

Main Methods:

  • Human mesangial cells (HMC) were incubated with tertatolol and various mitogens (serum, PDGF, thrombin).
  • 3H-thymidine incorporation was measured to assess proliferation.

Related Experiment Videos

  • Cell surface area was measured to evaluate contraction in response to angiotensin II.

    • Main Results:

    • Tertatolol significantly reduced 3H-thymidine incorporation in HMC stimulated by serum, PDGF, and thrombin.
    • Tertatolol inhibited the increase in HMC number over seven days in serum.
    • Tertatolol counteracted angiotensin II-induced reduction in HMC surface area.

    Conclusions:

    • Tertatolol demonstrates inhibitory effects on human mesangial cell (HMC) proliferation.
    • These findings suggest tertatolol may modulate renal cellular responses.
    • Further research into tertatolol's mechanism in renal microcirculation is indicated.