Collagen Solutions has appointed Panmure Gordon as its exclusive broker and nominated advisor.The biomaterials manufacturer also granted Panmure with 1.7m new shares via warrant, at a fixed price of 30p per share. The warrants are valid for three years.Panmure will replace Zeus Capital as nominated adviser, or Nomad, to the AIM-listed firm.As of 16:30 BST, Collagen Solution was trading 6.3% lower at 8.6p.