Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.


An elastic protein composing the principal component of elastic fibers.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



the scleroprotein that is the chief constituent of elastic fibers of connective tissue. Elastin is especially abundant in the cervical ligaments and the aortic walls (about 40 percent of the dry mass). The amount of elastin in lung tissue increases with age from 0.05 to 15 percent of the dry mass. Elastin is insoluble (even when heated) in water, dilute saline solutions, acids, and alkalies. It contain a large number of amino acid radicals with nonpolar side chains, which appear to be responsible for the high elasticity of its fibers. Like collagen, elastin is rich in glycine and proline.

Elastin can be broken down only with difficulty by proteolytic enzymes. It is digested in the digestive tract mainly as a result of the action of the enzyme elastase. Elastin is found in all vertebrates except cyclostomes; it is absent in invertebrates.


Haurowitz, F. Khimiia i funktsii belkov, 2nd ed. Moscow, 1965. (Translated from English.)
Elastin and Elastic Tissue. New York–London, 1977.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
* By inhibiting free radical generation, plant stem cell extracts protect vulnerable DNA and preserve the natural order for regenerating new collagen and elastin. (31,37)
* Boost levels of structural proteins pro-collagen and elastin, and
Dalal et al., "Assessment of elastin deficit in a Marfan mouse aneurysm model using an elastin-specific magnetic resonance imaging contrast agent," Circulation: Cardiovascular Imaging, vol.
The thin layer of the fascia formed by elastin and collagen fibres embedded in the ground matrix occupies about 10% of the endopelvic fascia volume, whereas the remaining 5% is estimated tobe occupied by the randomly distributed smooth muscles.
Anetoderma lesions showed a variable pattern of loss and fragmentation of elastin in the dermis depending on the stage and the severity of the disease.
We conclude it is either ELN gene defects or common gene defects associated with cardiac anomalies that may be the best possible explanation for this rare association, but that further research is needed to delineate the role of elastin in the development of the neonatal lung.
Osteoblast-like phenotypic VSMC and elastin degradation play central roles in vessel calcification.
Skin elasticity is influenced by collagen fibers and elastin fibers in the dermis.
"The two biggest disruptors of skin health are inflammation and oxidation, because they cause destruction of the normal network that gives skin its elasticity and strength, collagen and elastin," says Alan Dattner, MD, who practices integrative medicine and holistic dermatology in New York.
Essential for cell renewal they fortify skin's collagen and elastin matrix for even tone and smoother firmer texture effectively slowing cell damage premature aging and the formation of fine lines and wrinkles.
For histochemical studies, the collagen was estimated by Masson's trichrome stain, elastin was estimated by Van Gieson's stain and mucopolysaccharide was determined by Modified Periodic acid Schiff .
2 OMEGA 3 fatty acids are also known to help influence the growth of collagen and elastin.