Сравнение методов

	Высвобождение БМР	Динамический механический анализ	GPC/SEC
Область	Биоматериалы	Биоматериалы	Биоматериалы
Семейство	Process / pipeline	Process / pipeline	Process / pipeline
Год появления	1965	1960	1962
Автор метода	Marshall Urist	Ferry and Schwarzl	Moore and Debye
Тип	Kinetic release assay	Rheological characterization	Chromatographic analysis
Основополагающий источник	Urist, M. R. (1965). Bone: formation by autoinduction. Science, 150(3698), 893-899.	Menard, K. P. (2008). Dynamic mechanical analysis: a practical introduction (2nd ed.). CRC Press.	Striegel, A. M., Yau, W. W., Kirkland, J. J., & Bly, D. D. (2009). Modern size-exclusion liquid chromatography: practice and theory. John Wiley & Sons.
Другие названия	BMP release kinetics, BMP elution profile, growth factor release assay	DMA, rheological analysis, viscoelastic testing	size exclusion chromatography, molecular weight determination, polymer characterization
Связанные	4	3	3
Сводка	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.	Dynamic mechanical analysis (DMA) measures the viscoelastic properties of materials—their elastic stiffness and viscous damping—by applying a sinusoidal stress or strain and measuring the phase lag and amplitude of the material's response. Developed from rheology principles in the 1960s and formalized by Ferry, Schwarzl, and others, DMA provides quantitative measures of how polymeric biomaterials respond to time-dependent and frequency-dependent mechanical stimuli. Key outputs include the storage modulus (elastic component), loss modulus (viscous component), and loss tangent (tan δ), which together characterize the material's mechanical behavior across temperature and frequency ranges.	Gel permeation chromatography (GPC), also known as size exclusion chromatography (SEC), is an analytical technique for determining the molecular weight distribution (MWD) and average molecular weight (Mw, Mn) of polymers. The method separates polymer molecules by their hydrodynamic size as they pass through a porous chromatography column: larger molecules elute first (excluded from pores), while smaller molecules are retained longer. Developed by Moore and colleagues in the 1960s, GPC/SEC is now the standard method for characterizing polymer chains, assessing polymer degradation over time, and verifying batch consistency in biomaterial production.