Alessandro Felder

ORCID: 0000-0003-3510-9906
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About
Contact & Profiles
Research Areas
  • Sarcoma Diagnosis and Treatment
  • Congenital limb and hand anomalies
  • Soft tissue tumor case studies
  • Bone Metabolism and Diseases
  • Bone health and osteoporosis research
  • Evolution and Paleontology Studies
  • Hip disorders and treatments
  • Nuclear Structure and Function
  • Urological Disorders and Treatments
  • Sexual Differentiation and Disorders
  • Forensic Anthropology and Bioarchaeology Studies
  • Orthopaedic implants and arthroplasty
  • Hip and Femur Fractures
  • Radiomics and Machine Learning in Medical Imaging
  • Urologic and reproductive health conditions
  • Bone fractures and treatments
  • Craniofacial Disorders and Treatments
  • Health, Environment, Cognitive Aging
  • Physiological and biochemical adaptations
  • Medical Imaging Techniques and Applications
  • Medical and Biological Sciences
  • Bone and Joint Diseases
  • Stochastic processes and statistical mechanics
  • Tendon Structure and Treatment
  • Cell Image Analysis Techniques

University College London
2020-2023

Royal Veterinary College
2017-2023

University of London
2021

Inria Saclay - Île de France
2015

ETH Zurich
2011-2012

<ns4:p>Research software is often developed with expedience as a core development objective because experimental results, but not the software, are specified and resourced project output. While such code can help find answers to specific research questions, it may lack longevity flexibility make reusable. We reimplemented BoneJ, our for skeletal biology image analysis, address design limitations that put at risk of becoming unusable. improved quality BoneJ by following contemporary best...

10.12688/wellcomeopenres.16619.1 preprint EN cc-by Wellcome Open Research 2021-02-22

<ns4:p>Research software is often developed with expedience as a core development objective because experimental results, but not the software, are specified and resourced project output. While such code can help find answers to specific research questions, it may lack longevity flexibility make reusable. We reimplemented BoneJ, our for skeletal biology image analysis, address design limitations that put at risk of becoming unusable. improved quality BoneJ by following contemporary best...

10.12688/wellcomeopenres.16619.2 preprint EN cc-by Wellcome Open Research 2021-04-28

Intra-cortical bone remodelling is a cell-driven process that replaces existing tissue with new in the cortex, leaving behind histological features called secondary osteons. While scaling of dimensions on macroscopic scale well known, less known about how spatial osteons vary relation to adult body size species. We measured cross-sectional area individual intact and their central Haversian canals transverse sections from 40 stylopodal bones 39 mammalian species (body mass 0.3–21 000 kg)....

10.1098/rsos.170431 article EN cc-by Royal Society Open Science 2017-11-01

Birds undisputedly range amongst nature's foremost navigators. To successfully navigate between breeding and wintering quarters, they, in addition to other natural orientation cues, rely on their ability sense the Earth's magnetic field. For this reason, migratory birds have become key model species for studying sensory mechanisms underlying field-guided navigation, as evidenced by identification of several brain regions believed be involved processing field information. However, there is...

10.1101/2025.03.04.641293 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2025-03-10

The BFW model introduced by Bohman, Frieze, and Wormald [Random Struct. Algorithms, 25, 432 (2004)] recently investigated in the framework of discontinuous percolation Chen D'Souza [Phys. Rev. Lett., 106, 115701 (2011)], is studied on square simple-cubic lattices. In two three dimensions, we find numerical evidence for a strongly transition. clusters at threshold are compact with fractal surface dimension $d_f=1.49\pm0.02$. On lattice, distinct jumps size largest cluster observed. We proceed...

10.1103/physreve.85.031103 article EN Physical Review E 2012-03-02

The interfascicular matrix (IFM; also known as the endotenon) is critical to mechanical adaptations and response load in energy-storing tendons, such human Achilles equine superficial digital flexor tendon (SDFT). We hypothesized that IFM a progenitor cell niche housing an exclusive subpopulation.

10.3389/fcell.2022.1094124 article EN cc-by Frontiers in Cell and Developmental Biology 2023-01-09

Bone adaptation is modulated by the timing, direction, rate and magnitude of mechanical loads. To investigate whether frequent slow, or infrequent fast, gaits could dominate bone to load, we compared scaling limb bones from two mammalian herbivore clades that use radically different high-speed gaits, bipedal hopping (suborder Macropodiformes; kangaroos kin) quadrupedal galloping (order Artiodactyla; goats, deer kin). Forelimb hindlimb were collected 20 artiodactyl 15 macropod species (body...

10.1098/rsos.180152 article EN cc-by Royal Society Open Science 2018-10-01

Many physiological, biomechanical, evolutionary and clinical studies that explore skeletal structure function require successful separation of trabecular from cortical compartments a bone has been imaged by X-ray micro-computed tomography (micro-CT) prior to analysis. Separation often involves manual subdivision these two similarly radio-opaque compartments, which can be time-consuming subjective. We have developed an objective, semi-automated protocol reduces user bias enables...

10.1098/rsos.210408 article EN cc-by Royal Society Open Science 2021-08-01

Changes in trabecular micro-architecture are key to our understanding of osteoporosis. Previous work focusing on structure model index (SMI) measurements have concluded that disease progression entails a shift from plates rods bone, but SMI is heavily biased by bone volume fraction. As an alternative SMI, we proposed the ellipsoid factor (EF) as continuous measure local shape between plate-like and rod-like extremes. We investigated relationship EF distributions, fraction geometry murine...

10.1098/rsos.201401 article EN cc-by Royal Society Open Science 2021-06-01

Abstract Worldwide research groups and funding bodies have highlighted the need for imaging biomarkers to predict osteoarthritis (OA) progression treatment effectiveness. Changes in trabecular architecture, which can be detected with non‐destructive high‐resolution CT imaging, may reveal OA before apparent articular surface damage. Here, we analysed tibial epiphyses of STR/Ort (OA‐prone) CBA (healthy, parental control) mice at different ages characterise effects mouse age strain on multiple...

10.1111/joa.13834 article EN cc-by Journal of Anatomy 2023-02-11

Changes in trabecular micro-architecture are key to our understanding of osteoporosis. Previous work focusing on structure model index (SMI) measurements have concluded that disease progression entails a shift from plates rods bone, but SMI is heavily biased by bone volume fraction. As an alternative SMI, we proposed the Ellipsoid Factor (EF) as continuous measure local shape between plate-like and rod-like extremes. We investigated relationship EF distributions, fraction geometry murine...

10.1101/2020.05.14.081042 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2020-05-15

Intra-cortical bone remodelling is a cell-driven process that replaces existing tissue with new in the cortex, leaving behind histological features called secondary osteons. While scaling of dimensions on macroscopic scale well known, less known about how spatial osteons vary relation to adult body size species. We measured cross-sectional area individual intact and their central Haversian canals transverse sections from 40 stylopodal bones 39 mammalian Scaling analysis our data shows mean...

10.1101/131300 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2017-04-30

Abstract Bone adaptation is modulated by the timing, direction, rate, and magnitude of mechanical loads. To investigate whether frequent slow, or infrequent fast, gaits could dominate bone to load, we compared scaling limb bones from two mammalian herbivore clades that use radically different high-speed gaits, bipedal hopping (suborder Macropodiformes; kangaroos kin) quadrupedal galloping (order Artiodactyla; goats, deer kin). Forelimb hindlimb were collected 20 artiodactyl 15 macropod...

10.1101/256768 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2018-01-30

Searchable abstracts of presentations at key conferences on calcified tissues ISSN 2052-1219 (online)

10.1530/boneabs.5.p144 article EN Bone Abstracts 2016-04-21

Abstract The interfascicular matrix (IFM) is critical to the mechanical adaptations and response load in energy-storing tendons, such as human Achilles equine superficial digital flexor tendon (SDFT). We hypothesized that IFM a progenitor cell niche housing an exclusive subpopulation. Immunolabelling of SDFT was used identify niche, localising expression patterns CD31 (endothelial cells), CD146 (IFM cells) LAMA4 basement membrane marker). Magnetic-activated sorting employed isolate compare...

10.1101/2022.10.14.512258 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2022-10-14

R scripts and MySQL queries, along with raw measurements, spreadsheets database tables that form the basis of figures 3-7 1-3 Doube et al. 2018

10.6084/m9.figshare.5631994.v3 article EN 2018-01-01
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