Comparer des méthodes

	Libération de BMP	Coloration au rouge Picrosirius
Domaine	Biomatériaux	Biomatériaux
Famille	Process / pipeline	Process / pipeline
Année d'origine	1965	1978
Auteur d'origine	Marshall Urist	Junqueira, Bignolas, Brentani
Type	Kinetic release assay	Staining assay
Source fondatrice	Urist, M. R. (1965). Bone: formation by autoinduction. Science, 150(3698), 893-899.	Junqueira, L. C. U., Bignolas, G., & Brentani, R. R. (1978). Picrosirius staining plus polarization microscopy, a specific method for collagen detection in tissue sections. Histochemical Journal, 11(4), 447-455.
Alias	BMP release kinetics, BMP elution profile, growth factor release assay	sirius red, collagen staining, fibrillar collagen assay
Apparentées	4	4
Résumé	The bone morphogenetic protein (BMP) release assay measures the kinetics and amount of BMP elution from a biomaterial carrier over time. BMP-2, BMP-6, BMP-7, and BMP-9 are potent osteoinductive growth factors discovered by Marshall Urist in 1965 that trigger bone and cartilage formation. When loaded into scaffolds, hydrogels, or implants, BMPs must be released in a controlled manner to maximize biological effect while minimizing systemic exposure. The release assay quantifies how much BMP is present in the surrounding medium at defined timepoints, enabling optimization of carrier materials and release profiles for bone regeneration and fracture healing applications.	Picrosirius red (acid red 80) is a direct dye for collagen that binds specifically to the triple helix structure of fibrillar collagens and allows direct visualization and quantification under light and polarized light microscopy. Introduced by Junqueira and colleagues in 1978, picrosirius red staining has become the gold standard for assessing collagen deposition and organization in tissue sections, scaffolds, and cell cultures. The key advantage is that picrosirius red-stained collagen exhibits birefringence under polarized light, enabling researchers to visualize not only the amount of collagen but also its degree of organization and fibril maturity—information crucial for evaluating bone, cartilage, skin, and tendon engineering.