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- W2126116457 abstract "Elastic fibres play an important role in the pulmonary development process. The overall goal of this work was to quantify elastin in chicken lungs, using domestic fowl (Gallus gallus) as an experimental model, from the 14 th day of hatching until the 42 nd after hatchling. As analytical methodologies we used high-performance liquid chromatography (HPLC) and a colorimetric method based on the use of a stain that has been only applied in histological techniques. The HPLC analysis was carried out in a reversed phase system with a binary gradient and detection by UV at 254 nm to quan- tify desmosine and isodesmosine, as the elastin cross links, in the studied samples. The colorimetric method was used by applying a commercial kit (Fastin™ Elastin Assay) which quantifies soluble tropoelastin and insoluble elastin made soluble after treatment with hot water solution of oxalic acid. The results obtained by HPLC were statistically different if comparing the incubation period with the after-hatchling days (p < 0.001). The determinations by the colorimetric method provided results without statistical difference between both analyzed periods (p = 0.581). These facts are in agreement with the immaturity of elastin in the period of incubation, without the presence of cross-linkings. The scope, limitations, and choice between both methods have been discussed. Elastic fibres are major insoluble extracellular matrix assemblies, providing elasticity and resilience to tissues that require the ability to deform repetitively and reversibly. They comprise a central crosslinked core of an amorphous component, consisting in the protein elastin (~90% of the fibre) surrounded by a sheath of microfibrils. Microfibril bundles form a template for the deposition of tropoelastin (the soluble ca. 64 kDa polypeptide monomer precursor of elastin) in the extracellular space. Deposits of elastin first appear within microfibril bundles, and then coalesce to form the central crosslinked elastin core of mature elastic fibres. Mature elastic fibres have an outer mantle of microfibrils and some microfibrils appear to be embedded within the elastin core." @default.
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- W2126116457 date "2009-02-26" @default.
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- W2126116457 title "Elastin in the Avian Lungs" @default.
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