title: Cellular responses and HSP70 expression during wound healing in Holothuria tubulosa (Gmelin, 1788).
abstract: Wound repair is a key event in the regeneration mechanisms of echinoderms. We studied, at the behavioural, cellular and molecular levels, the wound healing processes in Holothuria tubulosa after injuries to the body wall. The experiments were performed for periods of up to 72 h, and various coelomocyte counts, as well as the expression of heat shock proteins (HS27, HSP70 and HSP90), were recorded. Dermal wound healing was nearly complete within 72 h. In the early stages, we observed the injured animals twisting their bodies to keep their injuries on the surface of the water for the extrusion of the buccal pedicles. At the cellular level, we found time-dependent variations in the circulating coelomocyte counts. After injury, in particular, we observed a significant increase in spherule cells at 2.5 h post-injury. Using the western blot method, we observed and reported that the wounds produced, compared with controls, a significant increase in HSP27 and HSP70 expression in coelomocytes, whereas HSP70 was increased in scar tissue and HSP90 was increased only in cell-free coelomic fluid. These results highlight that the wounds were responsible for the stress condition with the induction of cellular and biochemical responses.
authors.affiliation: Dept. STEBICEF, Università degli Studi di Palermo, Via Archirafi, 18, 90123 Palermo, Italy.
authors.forename: Mirella
authors.initials: M
authors.lastname: Vazzana
authors.affiliation: Dept. STEBICEF, Università degli Studi di Palermo, Via Archirafi, 18, 90123 Palermo, Italy.
authors.forename: Tiziana
authors.initials: T
authors.lastname: Siragusa
authors.affiliation: Dept. STEBICEF, Università degli Studi di Palermo, Via Archirafi, 18, 90123 Palermo, Italy; IEMEST - Istituto Euromediterraneo di Scienza e Tecnologia, Palermo, Italy. Electronic address: vincenzo.arizza@unipa.it.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Arizza
authors.affiliation: IAMC - Istituto per l'Ambiente Marino Costiero U.O. di Capo Granitola - Consiglio Nazionale delle Ricerche, Via del Mare, 3, 91021 Torretta Granitola, TP, Italy.
authors.forename: Giuseppa
authors.initials: G
authors.lastname: Buscaino
authors.affiliation: Dept. STEBICEF, Università degli Studi di Palermo, Via Archirafi, 18, 90123 Palermo, Italy; IAMC - Istituto per l'Ambiente Marino Costiero U.O. di Capo Granitola - Consiglio Nazionale delle Ricerche, Via del Mare, 3, 91021 Torretta Granitola, TP, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Celi
mesh_terms: D000818:Animals; D055551:HSP27 Heat-Shock Proteins / Q000235:genetics* / Q000378:metabolism; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics* / Q000378:metabolism; D018841:HSP90 Heat-Shock Proteins / Q000235:genetics* / Q000378:metabolism; D047332:Holothuria / Q000235:genetics / Q000502:physiology*; D015151:Immunoblotting; D009928:Organ Specificity; D014945:Wound Healing
chemical_list: D055551:HSP27 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins; D018841:HSP90 Heat-Shock Proteins
keywords: Coelomocytes; HSPs; Holothurians; Stress; Wound healing