All Outputs (20)

John squire and endothelial glycocalyx structure: an unfinished story (2022)
Journal Article
Arkill, K. P., Michel, C. C., Rider, E. V. M., Wood, E. A., Small, M. O., Brown, J. L. E., & Kinnaird, A. L. (2023). John squire and endothelial glycocalyx structure: an unfinished story. Journal of Muscle Research and Cell Motility, 44(3), 217-223. https://doi.org/10.1007/s10974-022-09629-x

John Squire did not only produce leading works in the muscle field, he also significantly contributed to the vascular permeability field by ultrastructural analysis of the endothelial glycocalyx. Presented here is a review of his involvement in the f... Read More about John squire and endothelial glycocalyx structure: an unfinished story.

The role of extracellular vesicle miRNAs and tRNAs in synovial fibroblast senescence (2022)
Journal Article
Wijesinghe, S. N., Anderson, J., Brown, T. J., Nanus, D. E., Housmans, B., Green, J. A., …Peffers, M. J. (2022). The role of extracellular vesicle miRNAs and tRNAs in synovial fibroblast senescence. Frontiers in Molecular Biosciences, 9, Article 971621. https://doi.org/10.3389/fmolb.2022.971621

Extracellular vesicles are mediators of intercellular communication with critical roles in cellular senescence and ageing. In arthritis, senescence is linked to the activation of a pro-inflammatory phenotype contributing to chronic arthritis pathogen... Read More about The role of extracellular vesicle miRNAs and tRNAs in synovial fibroblast senescence.

Novel perspectives of sodium handling in type 2 diabetes mellitus (2022)
Journal Article
Hanson, P., Arkill, K. P., Merry, C. L., Hussain, M. S., Meersmann, T., Randeva, H. S., …Barber, T. M. (2022). Novel perspectives of sodium handling in type 2 diabetes mellitus. Expert Review of Endocrinology and Metabolism, 17(4), 333-341. https://doi.org/10.1080/17446651.2022.2092094

Introduction: As a key regulator of body water, sodium homeostasis forms an essential component of human physiology. Type 2 Diabetes Mellitus (T2D)-associated sodium overload stems from chronic renal retention of sodium, contributing toward the devel... Read More about Novel perspectives of sodium handling in type 2 diabetes mellitus.

Endothelial glycocalyx is damaged in diabetic cardiomyopathy: angiopoietin 1 restores glycocalyx and improves diastolic function in mice (2022)
Journal Article
Qiu, Y., Buffonge, S., Ramnath, R., Jenner, S., Fawaz, S., Arkill, K. P., …Satchell, S. C. (2022). Endothelial glycocalyx is damaged in diabetic cardiomyopathy: angiopoietin 1 restores glycocalyx and improves diastolic function in mice. Diabetologia, 65(5), 879-894. https://doi.org/10.1007/s00125-022-05650-4

Aims/hypothesis

Diabetic cardiomyopathy (DCM) is a serious and under-recognised complication of diabetes. The first sign is diastolic dysfunction, which progresses to heart failure. The pathophysiology of DCM is incompletely understood but microci... Read More about Endothelial glycocalyx is damaged in diabetic cardiomyopathy: angiopoietin 1 restores glycocalyx and improves diastolic function in mice.

Transcriptomic Analysis of Cardiomyocyte Extracellular Vesicles in Hypertrophic Cardiomyopathy Reveals Differential snoRNA Cargo (2021)
Journal Article
James, V., Nizamudeen, Z. A., Lea, D., Dottorini, T., Holmes, T. L., Johnson, B. B., …Smith, J. G. (2021). Transcriptomic Analysis of Cardiomyocyte Extracellular Vesicles in Hypertrophic Cardiomyopathy Reveals Differential snoRNA Cargo. Stem Cells and Development, 30(24), 1215-1227. https://doi.org/10.1089/scd.2021.0202

Hypertrophic cardiomyopathy (HCM) is characterised by increased left ventricular wall thickness that can lead to devastating conditions such as heart failure and sudden cardiac death. Despite extensive study, the mechanisms mediating many of the asso... Read More about Transcriptomic Analysis of Cardiomyocyte Extracellular Vesicles in Hypertrophic Cardiomyopathy Reveals Differential snoRNA Cargo.

A Reinterpretation of Evidence for the Endothelial Glycocalyx Filtration Structure (2021)
Journal Article
Arkill, K. P. (2021). A Reinterpretation of Evidence for the Endothelial Glycocalyx Filtration Structure. Frontiers in Cell and Developmental Biology, 9, Article 734661. https://doi.org/10.3389/fcell.2021.734661

The endothelial glycocalyx is thought to be the primary macromolecular filter for fluid flux out of the vasculature. This filter maintains the higher protein concentration within the vessel lumen relative to the tissue. Whilst the arguments for the e... Read More about A Reinterpretation of Evidence for the Endothelial Glycocalyx Filtration Structure.

A new view of macula densa cell microanatomy (2021)
Journal Article
Gyarmati, G., Shroff, U. N., Riquier-Brison, A., Kriz, W., Kaissling, B., Neal, C. R., …Peti-Peterdi, J. (2021). A new view of macula densa cell microanatomy. AJP - Renal Physiology, 320(3), F492-F504. https://doi.org/10.1152/ajprenal.00546.2020

Although macula densa (MD) cells are chief regulatory cells in the nephron with unique microanatomical features, they have been difficult to study in full detail due to their inaccessibility and limitations in earlier microscopy techniques. The prese... Read More about A new view of macula densa cell microanatomy.

Non‐invasive measurement of retinal permeability in a diabetic rat model (2020)
Journal Article
Whatmore, J. L., Allen, C. L., Malhi, N. K., Whatmore, J. D., Bates, D. O., & Arkill, K. P. (2020). Non‐invasive measurement of retinal permeability in a diabetic rat model. Microcirculation, 27(6), Article e12623. https://doi.org/10.1111/micc.12623

Objective: The gold standard for measuring blood-retinal barrier permeability is the Evans blue assay. However, this technique has limitations in vivo, including non-specific tissue binding and toxicity. This study describes a non-toxic, high through... Read More about Non‐invasive measurement of retinal permeability in a diabetic rat model.

Mathematical model to determine the effect of a sub-glycocalyx space (2020)
Journal Article
Dalwadi, M. P., Dalwadi, M. P., King, J. R., Dyson, R. J., & Arkill, K. P. (2020). Mathematical model to determine the effect of a sub-glycocalyx space. Physical Review Fluids, 5(4), Article 043103. https://doi.org/10.1103/physrevfluids.5.043103

We consider the drainage of blood plasma across the capillary wall, focusing on the flow through the endothelial glycocalyx layer that coats the luminal surface of vascular endothelial cells. We investigate how the presence of a sub-glycocalyx space... Read More about Mathematical model to determine the effect of a sub-glycocalyx space.

Local microvascular leakage promotes trafficking of activated neutrophils to remote organs (2020)
Journal Article
Owen-Woods, C., Joulia, R., Barkaway, A., Rolas, L., Ma, B., Nottebaum, A. F., …Nourshargh, S. (2020). Local microvascular leakage promotes trafficking of activated neutrophils to remote organs. Journal of Clinical Investigation, 130(5), 2301-2318. https://doi.org/10.1172/JCI133661

Copyright: © 2020, Owen-Woods et al. This is an open access article published under the terms of the Creative Commons Attribution 4.0 International License. Increased microvascular permeability to plasma proteins and neutrophil emigration are hallmar... Read More about Local microvascular leakage promotes trafficking of activated neutrophils to remote organs.

Lipid species affect morphology of endoplasmic reticulum: a sea urchin oocyte model of reversible manipulation (2019)
Journal Article
Ulloa, G., Hamati, F., Dick, A., Fitzgerald, J., Mantell, J., Verkade, P., …Poccia, D. (2019). Lipid species affect morphology of endoplasmic reticulum: a sea urchin oocyte model of reversible manipulation. Journal of Lipid Research, 60(11), 1880-1891. https://doi.org/10.1194/jlr.ra119000210

The endoplasmic reticulum (ER) is a large multifunctional organelle of eukaryotic cells. Malfunction of the ER in various disease states, such as atherosclerosis, Type 2 diabetes, cancer, Alzheimer’s and Parkinson’s diseases and amyotrophic lateral s... Read More about Lipid species affect morphology of endoplasmic reticulum: a sea urchin oocyte model of reversible manipulation.

Peptide gels of fully-defined composition and mechanics for probing cell-cell and cell-matrix interactions in vitro (2019)
Journal Article
Ashworth, J. C., Thompson, J. L., James, J. R., Slater, C. E., Pijuan-Galitó, S., Lis-Slimak, K., …Merry, C. L. (2020). Peptide gels of fully-defined composition and mechanics for probing cell-cell and cell-matrix interactions in vitro. Matrix Biology, 85-86, 15-33. https://doi.org/10.1016/j.matbio.2019.06.009

© 2019 Current materials used for in vitro 3D cell culture are often limited by their poor similarity to human tissue, batch-to-batch variability and complexity of composition and manufacture. Here, we present a “blank slate” culture environment base... Read More about Peptide gels of fully-defined composition and mechanics for probing cell-cell and cell-matrix interactions in vitro.

Novel haemodynamic structures in the human glomerulus (2018)
Journal Article
Neal, C., Arkill, K., Bell, J., Betteridge, K., Bates, D., Winlove, C., Salmon, A., & Harper, S. (in press). Novel haemodynamic structures in the human glomerulus. AJP - Renal Physiology, https://doi.org/10.1152/ajprenal.00566.2017

To investigate human glomerular structure under conditions of physiological perfusion we have analysed fresh and perfusion fixed normal human glomeruli at physiological hydrostatic and oncotic pressures using serial resin section reconstruction, conf... Read More about Novel haemodynamic structures in the human glomerulus.

Acute depletion of diacylglycerol from the Cis-Golgi affects localised nuclear envelope morphology during mitosis (2018)
Journal Article
Chung, G. H. C., Domart, M.-C., Peddie, C., Mantell, J., Mclaverty, K., Arabiotorre, A., Hodgson, L., Byrne, R. D., Verkade, P., Arkill, K. P., Collinson, L. M., & Larijani, B. (2018). Acute depletion of diacylglycerol from the Cis-Golgi affects localised nuclear envelope morphology during mitosis. Journal of Lipid Research, 59, 1402-1413. https://doi.org/10.1194/jlr.M083899

Dysregulation of nuclear envelope (NE) assembly results in various cancers; for example, renal and some lung carcinomas ensue due to NE malformation. The NE is a dynamic membrane compartment and its completion during mitosis, is a highly regulated pr... Read More about Acute depletion of diacylglycerol from the Cis-Golgi affects localised nuclear envelope morphology during mitosis.

Model-based image analysis of a tethered Brownian fibre for shear stress sensing (2017)
Journal Article
Gallagher, M. T., Neal, C. V., Arkill, K. P., & Smith, D. J. (2017). Model-based image analysis of a tethered Brownian fibre for shear stress sensing. Interface, 14(137), Article 20170564. https://doi.org/10.1098/rsif.2017.0564

The measurement of fluid dynamic shear stress acting on a biologically relevant surface is a challenging problem, particularly in the complex environment of, for example, the vasculature. While an experimental method for the direct detection of wall... Read More about Model-based image analysis of a tethered Brownian fibre for shear stress sensing.

A high resolution study of dynamic changes of Ce2O3 and CeO2 nanoparticles in complex environmental media (2017)
Journal Article
Merrifield, R. C., Arkill, K. P., Palmer, R. E., & Lead, J. R. (2017). A high resolution study of dynamic changes of Ce2O3 and CeO2 nanoparticles in complex environmental media. Environmental Science and Technology, 51(14), https://doi.org/10.1021/acs.est.7b01130

Ceria nanoparticles (NPs) rapidly and easily cycle between Ce(III) and Ce(IV) oxidation states, making them prime candidates for commercial and other applications. Increased commercial use has resulted in increased discharge to the environment and in... Read More about A high resolution study of dynamic changes of Ce2O3 and CeO2 nanoparticles in complex environmental media.

Sialic acids regulate microvessel permeability, revealed by novel in vivo studies of endothelial glycocalyx structure and function (2017)
Journal Article
Betteridge, K., Arkill, K., Neal, C., Harper, S., Foster, B., Satchell, S., …Salmon, A. (2017). Sialic acids regulate microvessel permeability, revealed by novel in vivo studies of endothelial glycocalyx structure and function. Journal of Physiology, 595(15), https://doi.org/10.1113/JP274167

The endothelial glycocalyx forms a continuous coat over the luminal surface of all vessels, and regulates multiple vascular functions. The contribution of individual components of the endothelial glycocalyx to one critical vascular function, microvas... Read More about Sialic acids regulate microvessel permeability, revealed by novel in vivo studies of endothelial glycocalyx structure and function.

Vascular endothelial growth factor-A165b is protective and restores endothelial glycocalyx in diabetic nephropathy (2015)
Journal Article

Diabetic nephropathy is the leading cause of ESRD in high-income countries and a growing problem across the world. Vascular endothelial growth factor-A (VEGF-A) is thought to be a critical mediator of vascular dysfunction in diabetic nephropathy, yet... Read More about Vascular endothelial growth factor-A165b is protective and restores endothelial glycocalyx in diabetic nephropathy.

Resolution of the three dimensional structure of components of the glomerular filtration barrier (2014)
Journal Article
Qvortrup, K., ARKILL, K., Starborg, T., Mantell, J., Knupp, C., Michel, C., …Neal, C. (2014). Resolution of the three dimensional structure of components of the glomerular filtration barrier. BMC Nephrology, 15(1), Article 24. https://doi.org/10.1186/1471-2369-15-24

Background: The human glomerulus is the primary filtration unit of the kidney, and contains the Glomerular Filtration Barrier (GFB). The GFB had been thought to comprise 3 layers - the endothelium, the basement membrane and the podocyte foot processe... Read More about Resolution of the three dimensional structure of components of the glomerular filtration barrier.

Origin of parietal podocytes in atubular glomeruli mapped by lineage tracing (2013)
Journal Article
Schulte, K., Arkill, K., Berger, K., Boor, P., Jirak, P., Gelman, I., …Moeller, M. J. (2014). Origin of parietal podocytes in atubular glomeruli mapped by lineage tracing. Journal of the American Society of Nephrology, 25(1), 129-141. https://doi.org/10.1681/ASN.2013040376

Parietal podocytes are fully differentiated podocytes lining Bowman's capsule where normally only parietal epithelial cells (PECs) are found. Parietal podocytes formthroughout life and are regularly observed in human biopsies, particularly in atubula... Read More about Origin of parietal podocytes in atubular glomeruli mapped by lineage tracing.