Elastase 1
Elastase 1: Pancreatic elastase, a member of the pancreatic family of serine proteases. Although termed elastase, this powerful protease can hydrolyze numerous proteins, including elastin. The gene ELA1 that encodes elastase 1 is on chromosome 12q13.
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- Elastase 2
Elastase 2: Neutrophil elastase, an enzyme in neutrophils that digests elastin. The gene ELA2 encoding elastase 2 is on chromosome 19p13,3. Mutations in ELA2 cause cyclic neutropenia, a blood disease in which there are regular cyclic fluctuations in the numbers of neutrophils and other blood cells. The cycles are classically 21 days but may range […]
- Elastic fiber
Elastic fiber: A slender fiber in connective tissue that is rich in the protein elastin and has an elastic quality.
- Elastin
Elastin: A protein that coil and recoils like a spring within the elastic fibers of connective tissue and accounts for the elasticity of structures such the skin, blood vessels, heart, lungs, intestines, tendons, and ligaments. Elastin functions in connective tissue together with collagen. Whereas elastin provides elasticity, collagen provides rigidity to connective tissue. Elastin is […]
- Elbow
Elbow: The juncture of the long bones in the middle portion of the upper extremity. The bone of the arm (humerus) meets both the ulna (the inner bone of the forearm) and radius (the outer bone of the forearm) to form a hinge joint at the elbow. The radius and ulna also meet one another […]
- Elbow bursitis
Elbow bursitis: A common form of bursitis that is also known as olecranon bursitis. At the tip of the elbow (olecranon area) is the olecranon bursa, a fluid-filled sac that functions as a gliding surface to reduce friction during motion. Because of its location, the olecranon bursa is subject to trauma, ranging from simple repetitive […]