Biology of Invertebrate and Lower Vertebrate Collagens by Jerome Gross (auth.), A. Bairati, R. Garrone (eds.) PDF

By Jerome Gross (auth.), A. Bairati, R. Garrone (eds.)

Knowledge within the box of the biology of the extracellular matrix, and particularly of collagen, has made massive growth during the last ten years, in particular in mammals, birds and ln guy with admire to vitally important utilized scientific elements. simple wisdom within the animal state total has elevated extra slowly and haphazardly. We, consequently, thought of it helpful to prepare a gathering in particular dedicated to the research of the invertebrate and decrease vertebrate collagens. The NATO clinical department financed a sophisticated learn Workshop aimed toward bringing jointly specialists certified in collagen biology (with morphological, biochemical and genetic specialization) with researchers who're presently learning collagenous tissues of invertebrates and decrease vertebrates. The Medical-Biology Committee of the CNR-Rome and the collage of Milan additionally provided curiosity and aid for the association of this assembly. The structure of the workshop consisted in: 1) major lectures at the most up-to-date points of collagen biology; 2) minireviews at the present wisdom of collagenous tissues within the quite a few invertebrate phyla and in fish; three) contributed papers on specific points of analysis in particular fields; four) workshops at the technique of learning collagen. As we had meant, the Workshop gave a complete evaluate of obtained wisdom and of the current country of study actlvlty. It accredited vast interdisciplinary dialogue, permitting collabora­ tions to be confirmed and new study issues to be selected. This quantity comprises the textual content of the entire contributions offered on the assembly, together with posters.

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1968), which is thermostabilized by the other components. More recently Kimura and Matsuura (1974) and Kimura et al. , this congress). However, the structure is probably more complex: Shadwick (this congress) has found that in Loligo skin two kinds of molecules, having one common and one unique a chains, are present. The conclusion is that the Mollusca, which have a very complex anatomical organization with a number of collagenous structures (byssus, cartilage, connective tissues, basement membranes) have several kinds of collagen molecules.

Are organized in cylindrical arrays as illustrated by Faure-Fremiet et al. (1962) (reproduced by Gross, 1980). Although the period of o 400-450 A is somewhat shorter than that of vertebrate collagens they seriously considered the possibility that these structures might be members of the collagen class. We (Gross and Bruns, unpublished) have reexamined the stalk structure of Epistylus both morphologically and biochemically. Fig. 9 illustrates the structure seen in thin sections, which show in addition to the tubular, banded structures as reported by Faure-Fremiet et al.

Not enough material was obtained to confirm the identity of this structure by x-ray diffraction or amino acid composition, however, glycine, proline, alanine and hydroxyproline were qualitatively detected in an unfractionated preparation (Hedley and Wakefield, 1967). Jakus (1956) first described the remarkable hexagonal netlike structure of Descemet's membrane in the corneas of certain vertebrates and its collagenous nature as indicated by amino acid composition. , 1982). The structure seemed to be a curiosity although we suspect it will begin to appear elsewhere.

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