Macrophages of the Cardiorenal Axis and Myocardial Infarction

Maria Kercheva1,2, Vyacheslav Ryabov1,2,3, Aleksandra Gombozhapova1,2

  • 1Cardiology Division, Siberian State Medical University, 2 Moscovsky Trakt, 634055 Tomsk, Russia.

Biomedicines
|July 29, 2023
PubMed

Insights

Kidney macrophage composition differs in fatal myocardial infarction (MI). Fatal MI patients showed more CD163+ macrophages, while controls had more CD163+, CD206+, and CD68+ cells. This suggests potential therapeutic targets.

Area of Science:

  • Renal pathology
  • Immunohistochemistry
  • Cardiovascular disease research

Background:

  • Macrophage (mf) infiltration in kidneys is implicated in various diseases.
  • Understanding kidney macrophage profiles in myocardial infarction (MI) is crucial for post-MI complication management.

Purpose of the Study:

  • To compare kidney macrophage composition between patients with fatal myocardial infarction (MI) and individuals without cardiovascular diseases (CVD).
  • To investigate the roles of M1 (CD80+) and M2 (CD163+, CD206+, stabilin-1+) macrophages in the kidneys post-MI.

Main Methods:

  • Autopsy-derived kidney tissue samples were analyzed.
  • Immunohistochemistry was employed using markers: CD68 (common mf), CD80 (M1 type), and CD163, CD206, stabilin-1 (M2 type).

Main Results:

  • Fatal MI patients exhibited a predominance of CD163+ macrophages.
  • Control subjects showed a higher prevalence of CD163+, CD206+, and CD68+ macrophages.
  • CD80+ and CD206+ cell counts decreased in the long-term MI group, indicating a biphasic response.

Conclusions:

  • Kidney macrophage composition is altered in fatal myocardial infarction.
  • Specific macrophage subsets (CD80+, CD206+) show dynamic changes post-MI.
  • Further research on CD80+ and CD206+ cells may reveal novel therapeutic targets for post-MI complications.

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