Autologous Platelet Gel: Five Cases Illustrating Use on Sickle Cell Disease Ulcers.
Leg ulcers represent a particularly disabling complication in patients with sickle cell disease (SCD). Platelet gel (PG) is a novel therapeutic strategy used for accelerating wound healing of a wide range of tissues through the continuous release of platelet growth factors. Here, we describe the use of PG preparation according to Anitua's PRGF (preparations rich in growth factors) protocol for treating chronic nonhealing ulcers in patients with SCD. A positive response occurred in 3 patients with an area reduction of 85.7% to 100%, which occurred within 7 to 10 weeks, and a 35.2% and 20.5% of area reduction in 2 other patients, who however, had large ulcers. After calcium chloride addition, the platelet-rich plasmas demonstrated enhanced platelet-derived growth factors-BB (P < .001), transforming growth factor-β1 (P = .015), vascular endothelial growth factors (P = .03), and hepatocyte growth factors (nonsignificant) secretion. Furthermore, calcium chloride addition induced a significant decrease in platelet number (P = .0134) and there was no leukocyte detection in the PG product. These results demonstrate that PG treatment might impact the healing of leg ulcers in sickle cell disease, especially in patients with small ulcers.
University of Campinas-UNICAMP, INCT do Sangue, Campinas, São Paulo, Brazil mona@unicamp.br.
Simone C O
SC
Gilli
University of Campinas-UNICAMP, INCT do Sangue, Campinas, São Paulo, Brazil.
Suely A
SA
do Valle Oliveira
University of Campinas-UNICAMP, INCT do Sangue, Campinas, São Paulo, Brazil.
Sara T Olalla
ST
Saad
healing; platelet gel; sickle cell disease; ulcers