Collagen-Containing Fish Sidestream-Derived Protein Hydrolysates Support Skin Repair via Chemokine Induction
Ioanna Lapi,
Ourania Kolliniati,
Tone Aspevik,
Eleftherios E. Deiktakis,
Konstantinos Axarlis,
Maria G. Daskalaki,
Eirini Dermitzaki,
Maria Tzardi,
Sotirios C. Kampranis,
Zouhir El Marsni,
Katerina C. Kousoulaki,
Christos Tsatsanis,
Maria Venihaki
Affiliations
Ioanna Lapi
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Ourania Kolliniati
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Tone Aspevik
Department of Nutrition and Feed Technology, Nofima AS, 5141 Bergen, Norway
Eleftherios E. Deiktakis
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Konstantinos Axarlis
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Maria G. Daskalaki
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Eirini Dermitzaki
Laboratory of Clinical Chemistry, Medical School, University of Crete, 70013 Heraklion, Greece
Maria Tzardi
Laboratory of Pathology, Medical School, University of Crete, 70013 Heraklion, Greece
Sotirios C. Kampranis
Section of Plant Biochemistry, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg, Denmark
Restoring homeostasis following tissue damage requires a dynamic and tightly orchestrated sequence of molecular and cellular events that ensure repair and healing. It is well established that nutrition directly affects skin homeostasis, while malnutrition causes impaired tissue healing. In this study, we utilized fish sidestream-derived protein hydrolysates including fish collagen as dietary supplements, and investigated their effect on the skin repair process using a murine model of cutaneous wound healing. We explored potential differences in wound closure and histological morphology between diet groups, and analyzed the expression and production of factors that participate in different stages of the repair process. Dietary supplementation with fish sidestream-derived collagen alone (Collagen), or in combination with a protein hydrolysate derived from salmon heads (HSH), resulted in accelerated healing. Chemical analysis of the tested extracts revealed that Collagen had the highest protein content and that HSH contained the great amount of zinc, known to support immune responses. Indeed, tissues from mice fed with collagen-containing supplements exhibited an increase in the expression levels of chemokines, important for the recruitment of immune cells into the damaged wound region. Moreover, expression of a potent angiogenic factor, vascular endothelial growth factor-A (VEGF-A), was elevated followed by enhanced collagen deposition. Our findings suggest that a 5%-supplemented diet with marine collagen-enriched supplements promotes tissue repair in the model of cutaneous wound healing, proposing a novel health-promoting use of fish sidestreams.
