MMP1 and neoplasm: In a preliminary ex vivo study of CELERGEN components against UVA-induced damage in human skin biopsies and fibroblasts [25], marine collagen peptides but not the complex of plant-derived antioxidants inhibited transcriptional and posttranscriptional matrix metalloproteinase-1 and elastase upregulation, leading the authors to hypothesise clinical feasibility for the prevention of skin photoaging.