PPAR-Gamma Agonist Pioglitazone Reduced CD68+ but Not CD163+ Macrophage Dermal Infiltration in Obese Psoriatic Patients

Autor: Ya. O. Yemchenko, V. I. Shynkevych, K. Ye Ishcheikin, I. P. Kaidashev
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: PPAR Research, Vol 2020 (2020)
Druh dokumentu: article
ISSN: 1687-4757
1687-4765
DOI: 10.1155/2020/4548012
Popis: Background. Macrophages are of great importance in the development of obesity and psoriasis. Signaling via PPAR-γ in certain macrophage populations is associated with M2-like features and anti-inflammatory profile. In this research, we evaluated the anti-inflammatory action of pioglitazone by the immunohistochemical study of M1 and M2 macrophages in psoriasis-affected skin in obese patients. Methods. We used immunohistochemistry to characterize CD68+ and CD163+ macrophages and pathomorphological description of skin biopsy, obtained from 6 obese psoriatic patients before and after treatment with 15, 30, and 45 mg pioglitazone, once a day during 6 months. Two patients with conventional therapy and without pioglitazone served as control. Results. Generally, CD163+ cell quantities in psoriasis-affected skin significantly dominated over CD68+ before and after all treatment regiments. Among patients who received pioglitazone, some of them clearly responded to treatment from lowest to highest doses by decreasing CD68+ cells. In the group with 30 mg pioglitazone regiment, we detected a significant reduction of CD68+ cells in dermal infiltrates: CI 95% (16–32) before versus CI 95% (2–7) after treatment. Pioglitazone dose escalation led to certain normalization of skin morphology. Conclusion. The immunohistochemical study allows us to show the anti-inflammatory effect of pioglitazone in psoriatic obese patients, which can be mediated by reducing the number of СD68+ macrophages, but not СD163+ macrophages, in the affected dermis.
Databáze: Directory of Open Access Journals
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