Tranilast (Rizaben®, Kissei Pharmaceutical, Japan) was solubilized with 1% NaHCO3 followed by heating at 70°C for 1 h (33.3mg/ml) [17 (link),19 (link),20 (link)]. Pirfenidone (Esbriet®, Roche Pharmaceuticals, Switzerland) was solubilized with sterile water followed by warming at 60°C for 30min [18 (link)]. We have previously showed that these drugs can reduce levels of hyaluronan and collagen type I in murine breast tumor models [17 (link),18 (link)].
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