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


An elastic protein composing the principal component of elastic fibers.



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.
References in periodicals archive ?
As we age, however, elastin and collagen fibers decrease as a result of reduced synthesis, (11,12) as well as increased degradation from UV-induced matrix metalloproteinases which are enzymes that destroy our skin's support structure.
The influence of laser therapy on biomodulation of collagen and elastin fibers.
Human VSMCs, all between passage 2 and passage 6, will be seeded on purified elastin in standard six wells plates.
In histologic sections of normal lung, elastin fibers are visible in a discontinuous manner within alveolar walls.
When collagen and elastin diminish, skin begins to lose its elasticity--lines and wrinkles are the visual markers of this.
For the first time in a qualitative and quantitative study, it was shown that a hemizygous for the elastin gene affects the elastic component of both major vascular vessels as well as the cutaneous elastic component.
Key Words: elastin fibres, mechanical ventilation, pneumonia, broncho-alveolar lavage, cohort study
The damaged cells lose their ability to repair DNA and connective collagen fibres, leading to a reduction in skin's elastin and collagen.
ENDURAGen is a tough but flexible biomaterial made up of cross-linked porcine dermal collagen and its constituent elastin fibers.
Elastin is being studied as a possible means to "put injured soldiers back together," Gregory explains.
The new product, which contains fish collagen, hyaluronic acid, chondroitin sulfate, elastin, ceramide, vitamin C, B2 and B6, helps maintain the skin condition.
In the 40's and 50's this method was further developed to remove cells and collagen leaving intact elastin fibers [2, 3].