{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T23:32:38Z","timestamp":1787873558012,"version":"build-2784847793"},"reference-count":27,"publisher":"The Company of Biologists","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2005,6,15]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Echinoderms possess mutable collagenous tissues (MCTs), which are capable of undergoing rapid changes in their passive mechanical properties mediated by secretions from a specific cell type, the juxtaligamental cell. In this study,the possible presence of MCTs in the tube feet of the echinoid Paracentrotus lividus and the asteroid Marthasterias glacialis was investigated by measuring their extensibility, tensile strength, stiffness and toughness after different treatments known to influence the physiological state of MCTs. Calcium removal reversibly induced a significant plasticization of the tube feet of both species. When exposed to cell-disrupting solutions, the tube foot stem of sea urchins and sea stars showed a significant increase in strength, stiffness and toughness in the absence of calcium. This response, combined with the ultrastructural observation of juxtaligamental-like cells in the connective tissue, confirms that an MCT is present in both echinoid and asteroid tube feet. It was observed, however, that the tube foot stems of P. lividus and M. glacialis are affected differently by exposure to cell-disrupting solutions in the presence of calcium, indicating that their MCTs could be functionally different. In their soft state, MCTs could assist the muscles in tube foot protraction, bending and retraction; in their stiff state, they could play a role in the energy-sparing maintenance of position; for example,during strong attachment to the substratum to resist hydrodynamically generated loads.<\/jats:p>","DOI":"10.1242\/jeb.01641","type":"journal-article","created":{"date-parts":[[2005,6,6]],"date-time":"2005-06-06T18:08:14Z","timestamp":1118081294000},"page":"2277-2288","source":"Crossref","is-referenced-by-count":30,"title":["The tube feet of sea urchins and sea stars contain functionally different mutable collagenous tissues"],"prefix":"10.1242","volume":"208","author":[{"given":"Romana","family":"Santos","sequence":"first","affiliation":[{"name":"Acade\u0301mie Universitaire Wallonie-Bruxelles, Universite\u0301 de Mons-Hainaut, Laboratoire de Biologie marine, 6 Avenue du champ de Mars, 7000 Mons, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Delphine","family":"Haesaerts","sequence":"additional","affiliation":[{"name":"Acade\u0301mie Universitaire Wallonie-Bruxelles, Universite\u0301 Libre de Bruxelles, Laboratoire de Biologie Marine, 50 Avenue F.D. Roosevelt, 1050 Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michel","family":"Jangoux","sequence":"additional","affiliation":[{"name":"Acade\u0301mie Universitaire Wallonie-Bruxelles, Universite\u0301 de Mons-Hainaut, Laboratoire de Biologie marine, 6 Avenue du champ de Mars, 7000 Mons, Belgium"},{"name":"Acade\u0301mie Universitaire Wallonie-Bruxelles, Universite\u0301 Libre de Bruxelles, Laboratoire de Biologie Marine, 50 Avenue F.D. Roosevelt, 1050 Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick","family":"Flammang","sequence":"additional","affiliation":[{"name":"Acade\u0301mie Universitaire Wallonie-Bruxelles, Universite\u0301 de Mons-Hainaut, Laboratoire de Biologie marine, 6 Avenue du champ de Mars, 7000 Mons, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","reference":[{"key":"2021042510250221600_REF1","unstructured":"Byrne, M. (1994). Ophiuroidea. In Microscopic anatomy of invertebrates, Vol 14 Echinodermata (ed. F. W. Harrison and F. S Chia), pp.247-343. New York: Wiley-Liss."},{"key":"2021042510250221600_REF2","unstructured":"Flammang, P. (1996). Adhesion in echinoderms. In Echinoderm Studies Vol. 5 (ed. M. Jangoux and J. M. Lawrence), pp. 1-60. Rotterdam: Balkema."},{"key":"2021042510250221600_REF3","doi-asserted-by":"crossref","unstructured":"Florey, E. and Cahill, M. A. (1977). Ultrastructure of sea urchin tube feet. Evidence for connective tissue involvement in motor control. Cell Tissue Res.177,195-214.","DOI":"10.1007\/BF00221081"},{"key":"2021042510250221600_REF4","doi-asserted-by":"crossref","unstructured":"Koobs, T. J., Koob-Emunds, M. H. and Trotter, J. A.(1999). Cell-derived stiffening and plasticizing factors in sea cucumber (Cucumaria frondosa) dermis. J. Exp. Biol.202,2291-2301.","DOI":"10.1242\/jeb.202.17.2291"},{"key":"2021042510250221600_REF5","unstructured":"Lawrence, J. M. (1987). A functional biology of echinoderms. London: Croom Helm."},{"key":"2021042510250221600_REF6","doi-asserted-by":"crossref","unstructured":"Motokawa, T. (1984). Connective tissue catch in echinoderms. Biol. Rev.59,255-270.","DOI":"10.1111\/j.1469-185X.1984.tb00409.x"},{"key":"2021042510250221600_REF7","unstructured":"Motokawa, T. (1988). Catch connective tissue: a key character for echinoderms' success. In Echinoderms Biology (ed. R. D. Burke, P. V. Mladenov, P. Lambert and R. L. Pasley), pp. 39-54. Rotterdam: Balkema."},{"key":"2021042510250221600_REF8","doi-asserted-by":"crossref","unstructured":"Motokawa, T. and Tsuchi, T. (2003). Dynamic mechanical properties of body-wall dermis in various mechanical states and their implications for the behavior of sea cucumbers. Biol. Bull.205,261-275.","DOI":"10.2307\/1543290"},{"key":"2021042510250221600_REF9","unstructured":"Nichols, D. (1966). Functional morphology of the water vascular system. In Physiology of Echinodermata (ed. R. A. Boolootian), pp.219-244. New York: Interscience Publishers."},{"key":"2021042510250221600_REF10","doi-asserted-by":"crossref","unstructured":"Santos, R. and Flammang, P. (2005). Morphometry and mechanical design of tube foot stems in sea urchins: A comparative study. J. Exp. Mar. Biol. Ecol.315,211-223.","DOI":"10.1016\/j.jembe.2004.09.016"},{"key":"2021042510250221600_REF11","doi-asserted-by":"crossref","unstructured":"Shadwick, R. E. (1992). Soft composites. In Biomechanics. Materials. A practical approach (ed. J. F. V. Vincent), pp. 133-164. Oxford: Oxford University Press.","DOI":"10.1093\/oso\/9780199632237.003.0007"},{"key":"2021042510250221600_REF12","doi-asserted-by":"crossref","unstructured":"Skyler McCurley, R. and Kier, W. M. (1995). The functional morphology of starfish tube feet: The role of a crossed-fiber helical array in movement. Biol. Bull.188,197-209.","DOI":"10.2307\/1542085"},{"key":"2021042510250221600_REF13","unstructured":"Szulgit, G. K. and Shadwick, R. E. (1994). The effects of calcium chelation and cell perforation on the mechanical properties of sea urchin ligaments. In Echinoderms through time(ed. B. David, A. Guille, J. P. Fe\u0301ral and M. Roux), pp.887-892. Rotterdam: Balkema."},{"key":"2021042510250221600_REF14","doi-asserted-by":"crossref","unstructured":"Szulgit, G. K. and Shadwick, R. E. (2000). Dynamic mechanical characterization of a mutable collagenous tissue: Response of sea cucumber dermis to cell lysis and dermal extracts. J. Exp. Biol.203,1539-1550.","DOI":"10.1242\/jeb.203.10.1539"},{"key":"2021042510250221600_REF15","doi-asserted-by":"crossref","unstructured":"Thurmond, F. A. and Trotter, J. A. (1996). Morphology and biomechanics of the microfibrillar network of sea cucumber dermis. J. Exp. Biol.199,1817-1828.","DOI":"10.1242\/jeb.199.8.1817"},{"key":"2021042510250221600_REF16","unstructured":"Tipper, J. P., Lyons-Levy, G., Atkinson, M. A. L. and Trotter,J. A. (2003). Purification, characterization and cloning of tensilin, the collagen-fibril binding and tissue-stiffening factor from Cucumaria frondosa dermis. Matrix Biol.21,625-635."},{"key":"2021042510250221600_REF17","doi-asserted-by":"crossref","unstructured":"Trotter, J. A. and Koob, T. J. (1995). Evidence that calcium-dependent cellular processes are involved in the stiffening response of holothurian dermis and that dermal cells contain an organic stiffening factor. J. Exp. Biol.198,1951-1961.","DOI":"10.1242\/jeb.198.9.1951"},{"key":"2021042510250221600_REF18","doi-asserted-by":"crossref","unstructured":"Trotter, J. A., Tipper, J., Lyons-Levy, G., Chino, K., Heuer, A. H., Liu, Z., Mrksich, M., Hodneland, C., Dillmore, W. S., Koob, T. J. et al. (2000). Towards a fibrous composite with dynamically controlled stiffness: lessons from echinoderms. Biochem. Soc. Trans.28,357-362.","DOI":"10.1042\/bst0280357"},{"key":"2021042510250221600_REF19","unstructured":"Vincent, J. F. V. (1990). Structural Biomaterials. Princeton: Princeton University Press."},{"key":"2021042510250221600_REF20","unstructured":"Vogel, S. (2003). Comparative Biomechanics - Life's physical world. Princeton: Princeton University Press."},{"key":"2021042510250221600_REF21","doi-asserted-by":"crossref","unstructured":"Wilkie, I. C. (1984). Variable tensility in echinoderm collagenous tissues: a review. Mar. Behav. Physiol.11,1-34.","DOI":"10.1080\/10236248409387032"},{"key":"2021042510250221600_REF22","unstructured":"Wilkie, I. C. (1988). Design for disaster: the ophiuroid intervertebral ligament as a typical mutable collagenous tissue. In Echinoderm Biology (ed. R. D. Burke, P. V. Mladenov,P. Lambert and R. L. Pasley), pp. 25-38. Rotterdam:Balkema."},{"key":"2021042510250221600_REF23","unstructured":"Wilkie, I. C. (1996). Mutable collagenous tissues: extracellular matrix as mechano-effector. In Echinoderm Studies Vol. 5 (ed. M. Jangoux and J. M. Lawrence), pp.61-102. 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David), pp. 121-130. Lisse: Swets &Zeitlinger."},{"key":"2021042510250221600_REF27","doi-asserted-by":"crossref","unstructured":"Wilkie, I. C., Candia Carnevali, M. D. and Trotter, J. A.(2004). Mutable collagenous tissue: Recent progress and an evolutionary perspective. In Echinoderms: Mu\u0308nchen(ed. T. Heinzeller and J. H. Nebelsick), pp. 371-378. 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