All Outputs (14)

Identification of Pseudomonas aeruginosa exopolysaccharide Psl in biofilms using 3D OrbiSIMS (2023)
Journal Article
Khateb, H., Hook, A. L., Kern, S., Watts, J. A., Singh, S., Jackson, D., …Alexander, M. R. (2023). Identification of Pseudomonas aeruginosa exopolysaccharide Psl in biofilms using 3D OrbiSIMS. Biointerphases, 18(3), Article 031007. https://doi.org/10.1116/6.0002604

Secondary ion mass spectrometry (SIMS) offers advantages over both liquid extraction mass spectrometry and matrix assisted laser desorption mass spectrometry in that it provides the direct in situ analysis of molecules and has the potential to preser... Read More about Identification of Pseudomonas aeruginosa exopolysaccharide Psl in biofilms using 3D OrbiSIMS.

Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function (2021)
Journal Article
Singh, S., Almuhanna, Y., Alshahrani, M. Y., Lowman, D. W., Rice, P. J., Gell, C., …Martinez-Pomares, L. (2021). Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function. npj Biofilms and Microbiomes, 7(1), Article 87. https://doi.org/10.1038/s41522-021-00257-w

Bacterial biofilms represent a challenge to the healthcare system because of their resilience against antimicrobials and immune attack. Biofilms consist of bacterial aggregates embedded in an extracellular polymeric substance (EPS) composed of polysa... Read More about Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function.

Development of dual anti-biofilm and anti-bacterial medical devices (2020)
Journal Article
Burroughs, L., Singh, S., Ashraf, W., Martinez-Pomares, L., Bayston, R., & Hook, A. L. (2020). Development of dual anti-biofilm and anti-bacterial medical devices. Biomaterials Science, 8(14), 3926-3934. https://doi.org/10.1039/d0bm00709a

The rising occurrence of antimicrobial resistance demands new strategies for delivering antibiotics to ensure their effective use. In this study, a multi-functional strategy to address medical device associated infections is explored whereby an anti-... Read More about Development of dual anti-biofilm and anti-bacterial medical devices.

Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation (2019)
Journal Article
Negm, O. H., Singh, S., Abduljabbar, W., Hamed, M. R., Radford, P., McDermott, E. M., …Tighe, P. J. (2019). Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation. Clinical and Experimental Immunology, 197(3), 352-360. https://doi.org/10.1111/cei.13306

Tumour necrosis factor receptor‐associated periodic syndrome (TRAPS) is an hereditary autoinflammatory disorder characterised by recurrent episodes of fever and inflammation. It is associated with autosomal dominant mutations in TNFRSF1A, which encod... Read More about Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation.

IFN-γ and IL-17A differentially influence the response of human macrophages and neutrophils to Pseudomonas aeruginosa infection (2018)
Journal Article
Muntaka, S., Almuhanna, Y., Jackson, D., Singh, S., Afryie-Asante, A., Cámara, M., & Martínez-Pomares, L. (2019). IFN-γ and IL-17A differentially influence the response of human macrophages and neutrophils to Pseudomonas aeruginosa infection. Infection and Immunity, 87(2), https://doi.org/10.1128/iai.00814-18

Macrophages are important orchestrators of inflammation during bacterial infection acting both as effector cells and as regulators of neutrophil recruitment and life span. Differently activated macrophage populations with distinct inflammatory and mi... Read More about IFN-γ and IL-17A differentially influence the response of human macrophages and neutrophils to Pseudomonas aeruginosa infection.

Integrin-mediated interactions control macrophage polarization in 3D hydrogels (2017)
Journal Article
Cha, B., Shin, S. R., Leijten, J., Li, Y., Singh, S., Liu, J. C., …Khademhosseini, A. (2017). Integrin-mediated interactions control macrophage polarization in 3D hydrogels. Advanced Healthcare Materials, 6(21), Article 1700289. https://doi.org/10.1002/adhm.201700289

Adverse immune reactions prevent clinical translation of numerous implantable devices and materials. Although inflammation is an essential part of tissue regeneration, chronic inflammation ultimately leads to implant failure. In particular, macrophag... Read More about Integrin-mediated interactions control macrophage polarization in 3D hydrogels.

Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations (2017)
Journal Article
Dollinger, C., Ndreu-Halili, A., Uka, A., Singh, S., Sadam, H., Neuman, T., …Vrana, N. E. (2017). Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations. Advanced Biosystems, 1(6), Article 1700041. https://doi.org/10.1002/adbi.201700041

Adverse immune reactions to implanted devices can seriously hamper the efficacy of implants. Monocyte derived macrophages play a crucial role in both initiation and resolution of the inflammatory response toward foreign bodies. As the surface microt... Read More about Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations.

Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states (2017)
Journal Article
Singh, S., Awuah, D., Rostam, H., Emes, R., Kandola, N. K., Onion, D., …Ghaemmaghami, A. M. (in press). Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states. ACS Biomaterials Science and Engineering, https://doi.org/10.1021/acsbiomaterials.7b00104

Macrophages are master regulators of immune responses towards implanted biomaterials. The activation state adopted by macrophages in response to biomaterials determines their own phenotype and function as well as those of other resident and infiltrat... Read More about Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states.

Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures (2017)
Journal Article
Pokorny, M., Klemes, J., Zidek, O., Dollinger, C., Ozcebe, G., Singh, S., …Vrana, N. E. (in press). Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures. Biomedical Physics and Engineering Express, 3(1), https://doi.org/10.1088/2057-1976/3/1/015002

Metallic implants are widely used in orthopaedic and orthodontic applications. However, generally surface treatment of the metallic surfaces is necessary to render them more biologically active. Herein, we describe a direct write printing method to m... Read More about Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures.

Modulation of the immune response to Mycobacterium tuberculosis during malaria/M. tuberculosis co-infection (2016)
Journal Article
Chukwuanukwu, R. C., Onyenekwe, C. C., Martinez-Pomares, L., Flynn, R. J., Singh, S., Amilo, G. I., …Okoye, J. O. (in press). Modulation of the immune response to Mycobacterium tuberculosis during malaria/M. tuberculosis co-infection. Clinical and Experimental Immunology, 187(2), https://doi.org/10.1111/cei.12861

Tuberculosis (TB) causes significant morbidity and mortality on a global scale. The African region has 24% of the world's TB cases. TB overlaps with other infectious diseases such as malaria and HIV, which are also highly prevalent in the African reg... Read More about Modulation of the immune response to Mycobacterium tuberculosis during malaria/M. tuberculosis co-infection.

The impact of surface chemistry modification on macrophage polarisation (2016)
Journal Article
Rostam, H., Singh, S., Salazar, F., Magennis, P., Hook, A. L., Singh, T., …Ghaemmaghami, A. M. (2016). The impact of surface chemistry modification on macrophage polarisation. Immunobiology, 221(11), 1237-1246. https://doi.org/10.1016/j.imbio.2016.06.010

Macrophages are innate immune cells that have a central role in combating infection and maintaining tissue homeostasis. They exhibit remarkable plasticity in response to environmental cues. At either end of a broad activation spectrum are pro-inflamm... Read More about The impact of surface chemistry modification on macrophage polarisation.

Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings (2016)
Journal Article
Knopf-Marques, H., Singh, S., Htwe, S. S., Wolfova, L., Buffa, R., Bacharouche, J., …Lavalle, P. (2016). Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings. Biomacromolecules, 17(6), 2189-2198. https://doi.org/10.1021/acs.biomac.6b00429

This study aims to design an optimal polyelectrolyte multilayer film of poly-L-lysine (PLL) and hyaluronic acid(HA) as an anti-inflammatory cytokine release system in order to decrease the implant failure due to any immune reactions. The chemical mod... Read More about Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings.

Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-?-treated macrophages to pseudomonas aeruginosa infection (2015)
Journal Article
Singh, S., Barr, H. L., Liu, Y., Robins, A., Heeb, S., Williams, P., …Martinez-Pomares, L. (2015). Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-γ-treated macrophages to pseudomonas aeruginosa infection. PLoS ONE, 10(2), Article e0117447. https://doi.org/10.1371/journal.pone.0117447

Pseudomonas aeruginosa is an opportunistic pathogen that can cause severe infections at compromised epithelial surfaces, such those found in burns, wounds, and in lungs damaged by mechanical ventilation or recurrent infections, particularly in cystic... Read More about Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-?-treated macrophages to pseudomonas aeruginosa infection.

Impact of surface chemistry and topography on the function of antigen presenting cells (2015)
Journal Article
Rostam, H. M., Singh, S., Vrana, N. E., Alexander, M. R., & Ghaemmaghami, A. M. (2015). Impact of surface chemistry and topography on the function of antigen presenting cells. Biomaterials Science, 3(3), 424-441. https://doi.org/10.1039/c4bm00375f

Antigen presenting cells (APCs) such as macrophages and dendritic cells (DCs) play a crucial role in orchestrating immune responses against foreign materials. The activation status of APCs can determine the outcome of an immune response following imp... Read More about Impact of surface chemistry and topography on the function of antigen presenting cells.