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Influence of Human and Bacterial Enzymes on Resin Restorations: A Review.
J Contemp Dent Pract
March 2022
Division of Oral Pathology, Department of Maxillofacial Surgery and Diagnostic Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia, e-mail:
Background: Esthetic satisfaction has been a prime concern for patients. This has led to a surge in the development of esthetic restorations and dental composites in the field of restorative dentistry over the past decade. Resins are the most preferred restorative material.
View Article and Find Full Text PDFUncoiling the link between STIM1 and metastatic pathways in estrogen receptor negative breast cancer cells.
Cell Calcium
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School of Pharmacy, The University of Queensland, Brisbane, QLD, Australia.
Molecular and intermolecular effects in collagen fibril mechanics: a multiscale analytical model compared with atomistic and experimental studies.
Biomech Model Mechanobiol
February 2016
Institute of Continuum Mechanics, Leibniz Universität Hannover, Appelstraße 11, 30167, Hannover, Germany.
Both atomistic and experimental studies reveal the dependence of collagen fibril mechanics on biochemical and biophysical features such as, for instance, cross-link density, water content and protein sequence. In order to move toward a multiscale structural description of biological tissues, a novel analytical model for collagen fibril mechanics is herein presented. The model is based on a multiscale approach that incorporates and couples: thermal fluctuations in collagen molecules; the uncoiling of collagen triple helix; the stretching of molecular backbone; the straightening of the telopeptide in which covalent cross-links form; slip-pulse mechanisms due to the rupture of intermolecular weak bonds; molecular interstrand delamination due to the rupture of intramolecular weak bonds; the rupture of covalent bonds within molecular strands.
View Article and Find Full Text PDFInfluence of cross-link structure, density and mechanical properties in the mesoscale deformation mechanisms of collagen fibrils.
J Mech Behav Biomed Mater
December 2015
Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Room 1-290, Cambridge, 02139 MA, USA; Center for Computational Engineering, Massachusetts Institute of Technology, 77 Massachusetts, Ave. Cambridge, MA 02139, USA; Center for Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA. Electronic address:
Collagen is a ubiquitous protein with remarkable mechanical properties. It is highly elastic, shows large fracture strength and enables substantial energy dissipation during deformation. Most of the connective tissue in humans consists of collagen fibrils composed of a staggered array of tropocollagen molecules, which are connected by intermolecular cross-links.
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J Biol Chem
November 2001
Universität Osnabrück, FB Biologie, Abt. Biophysik, Barbarastrasse 11, 49069 Osnabrück, Germany.
In ATP synthase (F(O)F(1)-ATPase) ion flow through the membrane-intrinsic portion, F(O), drives the central "rotor", subunits c(10)epsilongamma, relative to the "stator" ab(2)delta(alphabeta)(3). This converts ADP and P(i) into ATP. Vice versa, ATP hydrolysis drives the rotation backwards.
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