Skip to main content

Research Repository

Advanced Search

Outputs (121)

Lasting organ-level bone mechanoadaptation is unrelated to local strain (2020)
Journal Article
Javaheri, B., Razi, H., Gohin, S., Wylie, S., Chang, Y. M., Salmon, P., Lee, P. D., & Pitsillides, A. A. (2020). Lasting organ-level bone mechanoadaptation is unrelated to local strain. Science Advances, 6(10), https://doi.org/10.1126/sciadv.aax8301

Bones adapt to mechanical forces according to strict principles predicting straight shape. Most bones are, however, paradoxically curved. To solve this paradox, we used computed tomography–based, four-dimensional imaging methods and computational ana... Read More about Lasting organ-level bone mechanoadaptation is unrelated to local strain.

Aging and Mechanoadaptive Responsiveness of Bone (2019)
Journal Article
Javaheri, B., & Pitsillides, A. A. (2019). Aging and Mechanoadaptive Responsiveness of Bone. Current Osteoporosis Reports, 17(6), 560-569. https://doi.org/10.1007/s11914-019-00553-7

Osteoporosis is an age-related disorder characterized by bone loss and increased fracture susceptibility. Whether this is due to reduced loading in less active elderly individuals or inherent modifications in bone cells is uncertain. We suppose that... Read More about Aging and Mechanoadaptive Responsiveness of Bone.

Dchs1-Fat4 regulation of osteogenic differentiation in mouse (2019)
Journal Article
Crespo-Enriquez, I., Hodgson, T., Zakaria, S., Cadoni, E., Shah, M., Allen, S., Al-Krishali, A., Mao, Y., Yiu, A., Villagomez-Olea, G., Petzold, J., Pitsillides, A. A., Irvine, K., & Francis-West, P. (2019). Dchs1-Fat4 regulation of osteogenic differentiation in mouse. Development, 146, https://doi.org/10.1242/dev.176776

In human, mutations of the protocadherins FAT4 and DCHS1 result in Van Maldergem syndrome, which is characterised, in part, by craniofacial abnormalities. Here, we analyse the role of Dchs1-Fat4 signalling during osteoblast differentiation in mouse.... Read More about Dchs1-Fat4 regulation of osteogenic differentiation in mouse.

Regulation of the bone vascular network is sexually dimorphic (2019)
Journal Article
Goring, A., Sharma, A., Javaheri, B., Smith, R. C., Kanczler, J. M., Boyde, A., Hesse, E., Mahajan, S., Olsen, B. R., Pitsillides, A. A., Schneider, P., Oreffo, R. O., & Clarkin, C. E. (2019). Regulation of the bone vascular network is sexually dimorphic. Journal of Bone and Mineral Research, https://doi.org/10.1002/jbmr.3825

Osteoblast (OB) lineage cells are an important source of vascular endothelial growth factor (VEGF), which is critical for bone growth and repair. During bone development, pubertal differences in males and females exist, but little is known about whet... Read More about Regulation of the bone vascular network is sexually dimorphic.

Spontaneous dog osteoarthritis — a One Medicine vision (2019)
Journal Article
Meeson, R. L., Todhunter, R. J., Blunn, G., Nuki, G., & Pitsillides, A. A. (2019). Spontaneous dog osteoarthritis — a One Medicine vision. Nature Reviews Rheumatology, 15(5), 273-287. https://doi.org/10.1038/s41584-019-0202-1

Osteoarthritis (OA) is a global disease that, despite extensive research, has limited treatment options. Pet dogs share both an environment and lifestyle attributes with their owners, and a growing awareness is developing in the public and among rese... Read More about Spontaneous dog osteoarthritis — a One Medicine vision.

Sost haploinsufficiency provokes peracute lethal cardiac tamponade without rescuing the osteopenia in a mouse model of excess glucocorticoids (2019)
Journal Article
Javaheri, B., Herbert, E., Hopkinson, M., Al-Jazzar, A., & Pitsillides, A. A. (2019). Sost haploinsufficiency provokes peracute lethal cardiac tamponade without rescuing the osteopenia in a mouse model of excess glucocorticoids. American Journal of Pathology, 189(4), 753-761. https://doi.org/10.1016/j.ajpath.2018.12.007

Glucocorticoid-induced secondary osteoporosis is the most predictable side-effect of this anti-inflammatory. One of the main mechanisms by which glucocorticoids achieve such deleterious outcome in bone is by antagonizing Wnt/β-catenin signalling. Scl... Read More about Sost haploinsufficiency provokes peracute lethal cardiac tamponade without rescuing the osteopenia in a mouse model of excess glucocorticoids.

Regional diversity in the murine cortical vascular network is revealed by synchrotron X-ray tomography and is amplified with age (2018)
Journal Article
Núñez, J. A., Goring, A., Javaheri, B., Razi, H., Gomez-Nicola, D., Pitsillides, A. A., Thurner, P. J., Gomez-Nicola, D., Schneider, P., & Clarkin, C. E. (2018). Regional diversity in the murine cortical vascular network is revealed by synchrotron X-ray tomography and is amplified with age. https://doi.org/10.22203/eCM.v035a20

Cortical bone is permeated by a system of pores, occupied by the blood supply and osteocytes. With ageing, bone mass reduction and disruption of the microstructure are associated with reduced vascular supply. Insight into the regulation of the blood... Read More about Regional diversity in the murine cortical vascular network is revealed by synchrotron X-ray tomography and is amplified with age.

Transient peak-strain matching partially recovers the age-impaired mechanoadaptive cortical bone response (2018)
Journal Article
Javaheri, B., Carriero, A., Wood, M., De Souza, R., Lee, P. D., Shefelbine, S., & Pitsillides, A. A. (2018). Transient peak-strain matching partially recovers the age-impaired mechanoadaptive cortical bone response. https://doi.org/10.1038/s41598-018-25084-6

Mechanoadaptation maintains bone mass and architecture; its failure underlies age-related decline in bone strength. It is unclear whether this is due to failure of osteocytes to sense strain, osteoblasts to form bone or insufficient mechanical stimul... Read More about Transient peak-strain matching partially recovers the age-impaired mechanoadaptive cortical bone response.

Spatial relationship between bone formation and mechanical stimulus within cortical bone: Combining 3D fluorochrome mapping and poroelastic finite element modelling (2018)
Journal Article
Carriero, A., Pereira, A. F., Wilson, A. J., Castagno, S., Javaheri, B., Pitsillides, A. A., Marenzana, M., & Shefelbine, S. J. (2018). Spatial relationship between bone formation and mechanical stimulus within cortical bone: Combining 3D fluorochrome mapping and poroelastic finite element modelling. Bone Reports, 8, 72-80. https://doi.org/10.1016/j.bonr.2018.02.003

Bone is a dynamic tissue and adapts its architecture in response to biological and mechanical factors. Here we investigate how cortical bone formation is spatially controlled by the local mechanical environment in the murine tibia axial loading model... Read More about Spatial relationship between bone formation and mechanical stimulus within cortical bone: Combining 3D fluorochrome mapping and poroelastic finite element modelling.

FGF-2 promotes osteocyte differentiation through increased E11/podoplanin expression (2018)
Journal Article
Ikpegbu, E., Basta, L., Clements, D. N., Fleming, R., Vincent, T. L., Buttle, D. J., Pitsillides, A. A., Staines, K. A., & Farquharson, C. (2018). FGF-2 promotes osteocyte differentiation through increased E11/podoplanin expression. Journal of Cellular Physiology, 233(7), 5334-5347. https://doi.org/10.1002/jcp.26345

E11/podoplanin is critical in the early stages of osteoblast-to-osteocyte transitions (osteocytogenesis), however, the upstream events which regulate E11 expression are unknown. The aim of this study was to examine the effects of FGF-2 on E11-mediate... Read More about FGF-2 promotes osteocyte differentiation through increased E11/podoplanin expression.

Sost deficiency does not alter bone’s lacunar or vascular porosity in mice (2017)
Journal Article
Mosey, H., Núñez, J. A., Goring, A., Clarkin, C. E., Staines, K. A., Lee, P. D., Pitsillides, A. A., & Javaheri, B. (2017). Sost deficiency does not alter bone’s lacunar or vascular porosity in mice. Frontiers in Materials, 4(27), https://doi.org/10.3389/fmats.2017.00027

SCLEROSTIN (Sost) is expressed predominantly in osteocytes acting as a negative regulator of bone formation. In humans, mutations in the SOST gene lead to skeletal overgrowth and increased bone mineral density, suggesting that SCLEROSTIN is a key reg... Read More about Sost deficiency does not alter bone’s lacunar or vascular porosity in mice.

A distinctive patchy osteomalacia characterises Phospho1-deficient mice (2017)
Journal Article
Boyde, A., Staines, K. A., Javaheri, B., Millan, J. L., Pitsillides, A. A., & Farquharson, C. (2017). A distinctive patchy osteomalacia characterises Phospho1-deficient mice. Journal of Anatomy, 231(2), 293-308. https://doi.org/10.1111/joa.12628

The phosphatase PHOSPHO1 is involved in the initiation of biomineralisation. Bones in Phospho1 knockout (KO) mice show histological osteomalacia with frequent bowing of long bones and spontaneous fractures: they contain less mineral, with smaller min... Read More about A distinctive patchy osteomalacia characterises Phospho1-deficient mice.

Finite-element modelling of mechanobiological factors influencing sesamoid tissue morphology in the patellar tendon of an ostrich (2017)
Journal Article
Chadwick, K., Shefelbine, S. J., Pitsillides, A. A., & Hutchinson, J. R. (2017). Finite-element modelling of mechanobiological factors influencing sesamoid tissue morphology in the patellar tendon of an ostrich. Royal Society Open Science, 4(6), 170133. https://doi.org/10.1098/rsos.170133

The appearance and shape of sesamoid bones within a tendon or ligament wrapping around a joint are understood to be influenced by both genetic and epigenetic factors. Ostriches (Struthio camelus) possess two sesamoid patellae (kneecaps), one of which... Read More about Finite-element modelling of mechanobiological factors influencing sesamoid tissue morphology in the patellar tendon of an ostrich.

Hypomorphic conditional deletion of E11/Podoplanin reveals a role in osteocyte dendrite elongation (2017)
Journal Article
Staines, K. A., Javaheri, B., Hohenstein, P., Fleming, R., Ikpegbu, E., Unger, E., Hopkinson, M., Buttle, D. J., Pitsillides, A. A., & Farquharson, C. (2017). Hypomorphic conditional deletion of E11/Podoplanin reveals a role in osteocyte dendrite elongation. Journal of Cellular Physiology, 232(11), 3006-3019. https://doi.org/10.1002/jcp.25999

The transmembrane glycoprotein E11/Podoplanin (Pdpn) has been implicated in the initial stages of osteocyte differentiation. However, its precise function and regulatory mechanisms are still unknown. Due to the known embryonic lethality induced by gl... Read More about Hypomorphic conditional deletion of E11/Podoplanin reveals a role in osteocyte dendrite elongation.

Detection of early osteogenic commitment in primary cells using Raman spectroscopy (2017)
Journal Article
Smith, S. J., Emery, R., Pitsillides, A. A., Clarkin, C. E., & Mahajan, S. (2017). Detection of early osteogenic commitment in primary cells using Raman spectroscopy. Analyst, 142(11), 1962-1973. https://doi.org/10.1039/C6AN02469F

Major challenges in the development of novel implant surfaces for artificial joints include osteoblast heterogeneity and the lack of a simple and sensitive in vitro assay to measure early osteogenic responses. Raman spectroscopy is a label-free, non-... Read More about Detection of early osteogenic commitment in primary cells using Raman spectroscopy.