Evaluation of blood biomarkers in rats submitted to nanotextured and polyurethane foam-coated silicone implants

Abstract

Introduction: In recent decades, there has been a great evolution in breast implants' lining surface, which has resulted in decreased complications. In the postoperative period, the inflammation is constant and can be evaluated by the blood count, as it is a fast, inexpensive, and highly available examination. The present study evaluates blood biomarkers in rats submitted to the placement of nanotextured silicone implants and implants coated with polyurethane foam. Methods: 60 Wistar rats were used divided into two groups for nanotextured mini-implants and others mini-implants coated with polyurethane foam, subdivided into subgroups according to the animals' euthanasia in the 30, 60, and 90 days. At the time of euthanasia, blood samples were obtained by cardiac puncture and the blood count was analyzed. Results: Hemoglobin, hematocrit, mean corpuscular hemoglobin, leukocytes, neutrophils, lymphocytes, and platelets had very similar results in all subgroups evaluated (30, 60, and 90 days). However, when the different subgroups were compared within each group, statistically significant results were obtained in the mean corpuscular hemoglobin (nanotextured p=0.032 and polyurethane p=0.007) and leukocytes (nanotextured p=0.038 and polyurethane p=0.034). Changes in postoperative blood biomarkers were hypochromic anemia, normal leukocyte count, neutrophilia, lymphopenia, and thrombocytopenia. Conclusion: After the placement of mini-silicone implants, the rats of both groups evolved with hypochromic anemia, normal leukocyte count at the expense of neutrophilia and lymphopenia, and thrombocytopenia.

Keywords

• biomarkers
• blood cell count
• rats
• breast implant
• mammoplasty