Acta cirurgica brasileira · 2026
Effects of captopril and losartan on early wound healing in hypertensive rats.
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Braz Anne Caroline, Hendges Bruna Carla, Simões Maria de Lourdes Pessole Biondo, Ioshii Sergio Ossamu
Аннотация
PURPOSE: To compare the effects of captopril and losartan on inflammatory response, angiogenesis, and fibroblast activity during the early phase of wound healing in hypertensive rats.
METHODS: Twenty-seven paraffin-embedded skin wound samples from hypertensive rats were analyzed: control group (n = 8), losartan-treated group (n = 9), and captopril-treated group (n = 10). Histological and immunohistochemical analyses were performed on postoperative day 4. Hematoxylin-eosin staining was used to evaluate general wound structure, and immunohistochemistry with anti-leukocyte common antigen, anti-CD34, and anti-smooth muscle actin was performed to assess inflammatory cells, angiogenesis, and fibroblast activity, respectively.
RESULTS: No significant differences were observed in angiogenesis (p > 0.05) or fibroblast number (p > 0.05) between groups. However, the inflammatory reaction was significantly higher in captopril-treated (p = 0.0459) and losartan-treated (p = 0.0452) groups compared with the control group, with no significant difference between the two treated groups.
CONCLUSION: Neither captopril nor losartan influenced angiogenesis or fibroblast proliferation in the early healing phase. However, both drugs increased inflammatory cell infiltration.
METHODS: Twenty-seven paraffin-embedded skin wound samples from hypertensive rats were analyzed: control group (n = 8), losartan-treated group (n = 9), and captopril-treated group (n = 10). Histological and immunohistochemical analyses were performed on postoperative day 4. Hematoxylin-eosin staining was used to evaluate general wound structure, and immunohistochemistry with anti-leukocyte common antigen, anti-CD34, and anti-smooth muscle actin was performed to assess inflammatory cells, angiogenesis, and fibroblast activity, respectively.
RESULTS: No significant differences were observed in angiogenesis (p > 0.05) or fibroblast number (p > 0.05) between groups. However, the inflammatory reaction was significantly higher in captopril-treated (p = 0.0459) and losartan-treated (p = 0.0452) groups compared with the control group, with no significant difference between the two treated groups.
CONCLUSION: Neither captopril nor losartan influenced angiogenesis or fibroblast proliferation in the early healing phase. However, both drugs increased inflammatory cell infiltration.