نتایج جستجو برای: collagens

تعداد نتایج: 2517  

Journal: :Brazilian Journal of Medical and Biological Research 2003

Batool Hashemibeni Ebrahim Esfandiary, Malek Masoud Ansar Mohmmad Kazemi Mohmmad Mardani Nafiseh Esmaeili Sayeed Hamid Zarkesh Esfahani Vahid Goharian

  Objective(s): Osteoarthritis is one of the most common diseases in middle-aged population in the world. Cartilage tissue engineering (TE) has been presented as an effort to introduce the best combination of cells, biomaterial scaffolds and stimulating growth factors to produce a cartilage tissue similar to the natural articular cartilage. In this study, the chondrogenic potential of adipose d...

Journal: :Molecular cancer research : MCR 2013
Leo S Payne Paul H Huang

Malignant gliomas are characterized by a diffuse infiltration into the surrounding brain parenchyma. Infiltrating glioma cells exist in close proximity with components of the tumor microenvironment, including the extracellular matrix (ECM). Whereas levels of collagens in the normal adult brain are low, in glioma, collagen levels are elevated and play a vital role in driving tumor progression. T...

Journal: :Physical chemistry chemical physics : PCCP 2014
Pham Dinh Quoc Huy Mai Suan Li

Binding affinity of fullerenes C20, C36, C60, C70 and C84 for amyloid beta fibrils is studied by docking and all-atom molecular dynamics simulations with the Amber force field and water model TIP3P. Using the molecular mechanic-Poisson Boltzmann surface area method one can demonstrate that the binding free energy linearly decreases with the number of carbon atoms of fullerene, i.e. the larger i...

Journal: :Structure 2006
Changbong Hyeon Ruxandra I Dima D Thirumalai

Using self-organized polymer models, we predict mechanical unfolding and refolding pathways of ribozymes, and the green fluorescent protein. In agreement with experiments, there are between six and eight unfolding transitions in the Tetrahymena ribozyme. Depending on the loading rate, the number of rips in the force-ramp unfolding of the Azoarcus ribozymes is between two and four. Force-quench ...

2014
Wei Han Klaus Schulten

A critical step of β-amyloid fibril formation is fibril elongation in which amyloid-β monomers undergo structural transitions to fibrillar structures upon their binding to fibril tips. The atomic detail of the structural transitions remains poorly understood. Computational characterization of the structural transitions is limited so far to short Aβ segments (5-10 aa) owing to the long time scal...

Journal: :Investigative ophthalmology & visual science 2008
Theodorus L Ponsioen Marja J A van Luyn Roelofje J van der Worp Jan C van Meurs Johanna M M Hooymans Leonoor I Los

PURPOSE To evaluate the presence of collagen types I to VII, IX, XI, and XVIII at the posterior pole, the equator and the pre-equatorial area in human donor eyes, since collagens are important macromolecules that contribute to vitreoretinal adhesion at the vitreoretinal interface. METHODS Freshly isolated human retinectomy samples from the equator were used for reverse transcription-polymeras...

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