Diffractive small angle X-ray scattering imaging for anisotropic structures

Autor: Matias Kagias, Zhentian Wang, Mie Elholm Birkbak, Erik Lauridsen, Matteo Abis, Goran Lovric, Konstantins Jefimovs, Marco Stampanoni

Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)

Mesoscale investigations of material microarchitecture using small angle X-ray scattering (SAXS) methods have been limited by long measurement times. Here, the authors present an X-ray diffractive optics method which enables single shot acquisition o

Externí odkaz: https://doaj.org/article/b7536368cecb4b738b832285ed6b9710

In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold

Autor: Jun-Sang Park, Mie Elholm Birkbak, Ramille N. Shah, Adam E. Jakus, Simon Frølich, Jonathan Almer, Henrik Birkedal, Stuart R. Stock

Publikováno v: Stock, S R, Park, J S, Jakus, A, Birkbak, M, Frølich, S, Birkedal, H, Shah, R & Almer, J D 2021, ' In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold ', Materialia, vol. 18, 101174 . https://doi.org/10.1016/j.mtla.2021.101174

A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd303ee4165ccafcbe2ac7dfeaa78ae7
https://doi.org/10.1016/j.mtla.2021.101174

Bone Biomineral Properties Vary across Human Osteonal Bone

Autor: Mie Elholm Birkbak, Maja Østergaard, Simon Frølich, Jonas Palle, Henrik Birkedal, Nina Kølln Wittig, Kathryn Spiers, Jan Garrevoet

Publikováno v: Wittig, N K, Palle, J, Østergaard, M, Frølich, S, Birkbak, M E, Spiers, K M, Garrevoet, J & Birkedal, H 2019, ' Bone Biomineral Properties Vary across Human Osteonal Bone ', ACS Nano, vol. 13, no. 11, pp. 12949-12956 . https://doi.org/10.1021/acsnano.9b05535
ACS nano 13(11), 12949-12956 (2019). doi:10.1021/acsnano.9b05535

ACS nano 13(11), 12949 - 12956 (2019). doi:10.1021/acsnano.9b05535
The biomineralization of bone remains apuzzle. During Haversian remodeling in the dense humancortical bone, osteoclasts excavate a tunnel that is then filledin by osteoblasts wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf130d4ae0deeadb8f773885e2b575c3
https://pubmed.ncbi.nlm.nih.gov/31613594

No Signature of Osteocytic Osteolysis in Cortical Bone from Lactating NMRI Mice

Autor: Henrik Birkedal, Jesper Skovhus Thomsen, Mie Elholm Birkbak, Fiona Linnea Bach-Gansmo, Nina Kølln Wittig, Mette Høegh Wendelboe, Alexandra Pacureanu, Annemarie Brüel

Publikováno v: Wittig, N K, Birkbak, M, Bach-Gansmo, F L, Pacureanu, A, Okkels, M W, Brüel, A, Thomsen, J S & Birkedal, H 2019, ' No Signature of Osteocytic Osteolysis in Cortical Bone from Lactating NMRI Mice ', Calcified Tissue International, vol. 105, no. 3, pp. 308-315 . https://doi.org/10.1007/s00223-019-00569-2

The roles of osteocytes in bone homeostasis have garnered increasing attention since it has been realized that osteocytes communicate with other organs. It has long been debated whether and/or to which degree osteocytes can break down the bone matrix

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c290ecfe20c1131a271011486d8848f
https://pubmed.ncbi.nlm.nih.gov/31147741

Organ and tissue level properties are more sensitive to age than osteocyte lacunar characteristics in rat cortical bone

Autor: Jesper Skovhus Thomsen, Annemarie Brüel, Henrik Birkedal, Mie Elholm Birkbak, Fiona Linnea Bach-Gansmo, Nina Kølln Wittig, Malene Laugesen

Publikováno v: Wittig, N, Bach-Gansmo, F L, Birkbak, M E, Laugesen, M, Brüel, A, Thomsen, J S & Birkedal, H 2016, ' Organ and tissue level properties are more sensitive to age than osteocyte lacunar characteristics in rat cortical bone ', Bone Reports, vol. 4, pp. 28-34 . https://doi.org/10.1016/j.bonr.2015.11.003
Bone Reports, Vol 4, Iss C, Pp 28-34 (2016)
Bone Reports

Modeling and remodeling induce significant changes of bone structure and mechanical properties with age. Therefore, it is important to gain knowledge of the processes taking place in bone over time. The rat is a widely used animal model, where much d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7643374570476da663cbce90702528f1
https://doi.org/10.5167/uzh-128244