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Dr OLA NEGM's Outputs (30)

Is Cadmium Genotoxicity Due to the Induction of Redox Stress and Inflammation? A Systematic Review (2024)
Journal Article
Badawi, K., El Sharazly, B. M., Negm, O., Khan, R., & Carter, W. G. (2024). Is Cadmium Genotoxicity Due to the Induction of Redox Stress and Inflammation? A Systematic Review. Antioxidants, 13(8), Article 932. https://doi.org/10.3390/antiox13080932

The transition metal cadmium (Cd) is toxic to humans and can induce cellular redox stress and inflammation. Cd is a recognized carcinogen, but the molecular mechanisms associated with its genotoxicity and carcinogenicity are not defined. Therefore, a... Read More about Is Cadmium Genotoxicity Due to the Induction of Redox Stress and Inflammation? A Systematic Review.

Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity (2021)
Journal Article
Albogami, S., Todd, I., Negm, O., Fairclough, L. C., & Tighe, P. J. (2021). Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity. Immunology, 164(3), 637-654. https://doi.org/10.1111/imm.13400

The tumour necrosis factor receptor superfamily (TNFRSF) members contain cysteine-rich domains (CRD) in their extracellular regions, and the membrane-distal CRD1 forms homologous interactions in the absence of ligand. The CRD1 is therefore termed a p... Read More about Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity.

A Hybrid Evolutionary Strategy to Optimise Early-Stage Cancer Screening (2019)
Presentation / Conference Contribution
Figueredo, G. P., Shi, P., Parkes, A. J., Evans, K., Garibaldi, J. M., Negm, O., Tighe, P. J., Sewell, H. F., & Robertson, J. (2019, June). A Hybrid Evolutionary Strategy to Optimise Early-Stage Cancer Screening. Presented at 2019 IEEE Congress on Evolutionary Computation (CEC), Wellington, New Zealand

Current methods to identify cutoff values for tumour-associated molecules (antigens) discrimination are based on statistics and brute force. These methods applied to cancer screening problems are very inefficient, especially with large data sets with... Read More about A Hybrid Evolutionary Strategy to Optimise Early-Stage Cancer Screening.

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., Drewe, E., Fairclough, L., Todd, I., & 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.

Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells. (2018)
Journal Article
Liu, Y.-C., Hussain, F., Negm, O., Pavia, A., Halliday, N., Frédéric Dubern, J.-., Singh, S., Muntaka, S., Wheldon, L., Luckett, J., Tighe, P., Bosquillon, C., Williams, P., Cámara, M., & Martínez-Pomares, L. (2018). Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells. Frontiers in Microbiology, 9, Article 3018. https://doi.org/10.3389/fmicb.2018.03018

Pseudomonas aeruginosa causes infections in patients with compromised epithelial 32 barrier function. Multiple virulence factors produced by P. aeruginosa are controlled 33 by quorum sensing (QS) via 2-alkyl-4(1H)-quinolone (AQ) signal molecules. Her... Read More about Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells..

Tobacco smoke and nicotine suppress expression of activating signaling molecules in human dendritic cells (2018)
Journal Article
Alkhattabi, N., Todd, I., Negm, O., Tighe, P. J., & Fairclough, L. C. (2018). Tobacco smoke and nicotine suppress expression of activating signaling molecules in human dendritic cells. Toxicology Letters, 299, 40-46. https://doi.org/10.1016/j.toxlet.2018.09.002

Cigarette smoke has significant toxic effects on the immune system, and increases the risk of developing autoimmune diseases; one immunosuppressive effect of cigarette smoke is that it inhibits the T cell-stimulating, immunogenic properties of myeloi... Read More about Tobacco smoke and nicotine suppress expression of activating signaling molecules in human dendritic cells.

A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection (2018)
Journal Article
Negm, O. H., Hamed, M. R., & Monaghan, T. M. (2018). A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection. Journal of Visualized Experiments, 2018(136), Article e57399. https://doi.org/10.3791/57399

We provide a detailed overview of a novel high-throughput protein microarray assay for the determination of anti-C. difficile antibody levels in human sera and in separate preparations of polyclonal IVIg. The protocol describes the methodological ste... Read More about A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection.

Characterization of behavioral, signaling and cytokine alterations in a rat neurodevelopmental model for schizophrenia, and their reversal by the 5-HT6 receptor antagonist SB-399885 (2018)
Journal Article
Shortall, S. E., Negm, O. H., Fowler, M., Fairclough, L. C., Tighe, P. J., Wigmore, P. M., & King, M. (2018). Characterization of behavioral, signaling and cytokine alterations in a rat neurodevelopmental model for schizophrenia, and their reversal by the 5-HT6 receptor antagonist SB-399885. Molecular Neurobiology, 55(9), https://doi.org/10.1007/s12035-018-0940-0

Post-weaning social isolation of rats produces neuroanatomical, neurochemical and behavioral alterations resembling some core features of schizophrenia. This study examined the ability of the 5-HT? receptor antagonist SB-399885 to reverse isolation-i... Read More about Characterization of behavioral, signaling and cytokine alterations in a rat neurodevelopmental model for schizophrenia, and their reversal by the 5-HT6 receptor antagonist SB-399885.

Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease (2017)
Journal Article
Shindi, R., Al-Mehairi, A., Negm, O. H., Kalsheker, N., Gale, N., Shale, D. J., Harrison, T. W., Bolton, C. E., John, M., Todd, I., Tighe, P. J., & Fairclough, L. C. (2017). Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease. Clinical Immunology, 183, https://doi.org/10.1016/j.clim.2017.09.020

Autoimmunity occurs in chronic obstructive pulmonary disease (COPD). We describe an antigen microarray for detecting serum autoantibodies (AAbs) to determine how IgM, as well as IgG, AAbs distinguish patients with COPD from controls with a history of... Read More about Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease.

A signalome screening approach in the autoinflammatory disease TNF receptor associated periodic syndrome (TRAPS) highlights the anti-inflammatory properties of drugs for repurposing (2017)
Journal Article
Figueredo, G., Todd, I., Negm, O. H., Reps, J., Radford, P., Figueredo, G. P., McDermott, E. M., Drewe, E., Powell, R. J., Bainbridge, S., Hamed, M., Crouch, S., Garibaldi, J., St-Gallay, S., Fairclough, L. C., & Tighe, P. J. (2017). A signalome screening approach in the autoinflammatory disease TNF receptor associated periodic syndrome (TRAPS) highlights the anti-inflammatory properties of drugs for repurposing. Pharmacological Research, 125, 188-200. https://doi.org/10.1016/j.phrs.2017.08.012

© 2017 Elsevier Ltd TNF receptor associated periodic syndrome (TRAPS) is an autoinflammatory disease caused by mutations in TNF Receptor 1 (TNFR1). Current therapies for TRAPS are limited and do not target the pro-inflammatory signalling pathways tha... Read More about A signalome screening approach in the autoinflammatory disease TNF receptor associated periodic syndrome (TRAPS) highlights the anti-inflammatory properties of drugs for repurposing.

High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection (2017)
Journal Article
Monaghan, T. M., Negm, O. H., MacKenzie, B., Hamed, M. R., Shone, C. C., Humphreys, D., Acharya, K. R., & Wilcox, M. H. (2017). High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection. Clinical and Experimental Gastroenterology, 10, https://doi.org/10.2147/CEG.S133939

Objectives: Despite multiple risk factors and a high rate of colonization for Clostridium difficile, the occurrence of C. difficile infection in patients with cystic fibrosis is rare. The aim of this study was to compare the prevalence of binding C.... Read More about High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection.

Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration (2017)
Journal Article
Negm, O. H., MacKenzie, B., Hamed, M., Ahmad, O., Shone, C. C., Humphreys, D., Acharya, K. R., Loscher, C. E., Marszalowska, I., Lynch, M., Wilcox, M. H., & Monaghan, T. M. (2017). Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration. Clinical and Experimental Immunology, 188(3), 437-443. https://doi.org/10.1111/cei.12946

The prevalence of serum antibodies against Clostridium difficile (CD) toxins A and B in healthy populations have prompted interest in evaluating the therapeutic activity of intravenous immunoglobulin (IVIg) in individuals experiencing severe or recur... Read More about Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration.

The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs (2017)
Journal Article
Salazar, F., Awuah, D., Negm, O. H., Shakib, F., & Ghaemmaghami, A. M. (2017). The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs. Scientific Reports, 7(1), Article 43337. https://doi.org/10.1038/srep43337

A controlled inflammatory response is required for protection against infection, but persistent inflammation causes tissue damage. Dendritic cells (DCs) have a unique capacity to promote both inflammatory and anti-inflammatory processes. One key mech... Read More about The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs.

Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction (2016)
Journal Article
Tubby, C., Negm, O. H., Harrison, T. W., Tighe, P. J., Todd, I., & Fairclough, L. C. (2017). Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction. Journal of Asthma, 54(5), 456-466. https://doi.org/10.1080/02770903.2016.1236941

Objective: The three main types of killer cells – CD8+ T cells, NK cells and NKT cells – have been linked to asthma and chronic obstructive pulmonary disease (COPD). However, their role in a small subset of asthma patients displaying fixed airway obs... Read More about Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction.

The application of protein microarray assays in psychoneuroimmunology (2016)
Journal Article
Ayling, K., Bowden, T., Tighe, P., Todd, I., Dilnot, E. M., Negm, O., Fairclough, L., & Vedhara, K. (2017). The application of protein microarray assays in psychoneuroimmunology. Brain, Behavior, and Immunity, 59, 62-66. https://doi.org/10.1016/j.bbi.2016.09.013

Protein microarrays are miniaturized multiplex assays that exhibit many advantages over the commonly used enzyme-linked immunosorbent assay (ELISA). This article aims to introduce protein microarrays to readers of Brain, Behavior, and Immunity and de... Read More about The application of protein microarray assays in psychoneuroimmunology.

Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers (2016)
Journal Article
Ahmad, D. A. J., Negm, O. H., Layth Alabdullah, M., Mirza, S., Hamed, M. R., Band, V., Green, A. R., Ellis, I. O., & Rakha, E. (2016). Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers. Breast Cancer Research and Treatment, 159(3), 457-467. https://doi.org/10.1007/s10549-016-3967-9

Background Mitogen-activated protein kinases (MAPKs) are signalling transduction molecules that have different functions and diverse behaviour in cancer. In breast cancer, MAPK is related to oestrogen receptor (ER) and HER2.
Methods Protein express... Read More about Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers.

Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein (2016)
Journal Article
Alshareeda, A., Negm, O. H., Aleskandarany, M. A., Green, A. R., Nolan, C., Tighe, P. J., Madhusudan, S., Ellis, I. O., & Rakha, E. (2016). Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein. Breast Cancer Research and Treatment, 159(1), 41-53. https://doi.org/10.1007/s10549-016-3915-8

Impaired DNA damage response (DDR) may play a fundamental role in the pathogenesis of breast cancer (BC). RAD51 is a key player in DNA double-strand break repair. In this study, we aimed to assess the biological and clinical significance of RAD51 exp... Read More about Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein.

Human blood autoantibodies in the detection of colorectal cancer (2016)
Journal Article
Negm, O. H., Hamed, M. R., Schoen, R. E., Whelan, R. L., Steele, R. J., Scholefield, J., Dilnot, E. M., Shantha Kumara, H., Robertson, J. F., & Sewell, H. F. (2016). Human blood autoantibodies in the detection of colorectal cancer. PLoS ONE, 11(7), 1-14. https://doi.org/10.1371/journal.pone.0156971

Colorectal cancer (CRC) is the second most common malignancy in the western world. Early detection and diagnosis of all cancer types is vital to improved prognosis by enabling early treatment when tumours should be both resectable and curable. Sera f... Read More about Human blood autoantibodies in the detection of colorectal cancer.

The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts (2016)
Journal Article
Aleskandarany, M. A., Agarwal, D., Negm, O. H., Ball, G., Elmouna, A., Ashankyty, I., Nuglozeh, E., Fazaludeen, M. F., Diez-Rodriguez, M., Nolan, C. C., Tighe, P. J., Green, A. R., Ellis, I. O., & Rakha, E. A. (2016). The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts. Breast Cancer Research and Treatment, 156(1), 9-20. https://doi.org/10.1007/s10549-016-3709-z

Signal transducer and activator of transcription (STAT) transcription factors family are involved in diverse cellular biological functions. Reports regarding the prognostic impact of STAT3 expression in breast cancer (BC) are variable whether being a... Read More about The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts.

Clinical utility of reverse phase protein array for molecular classification of breast cancer (2015)
Journal Article
Negm, O. H., Muftah, A. A., Aleskandarany, M. A., Hamed, M. R., Ahmad, D. A., Nolan, C. C., Diez-Rodriguez, M., Tighe, P. J., Ellis, I. O., Rakha, E. A., & Green, A. R. (2016). Clinical utility of reverse phase protein array for molecular classification of breast cancer. Breast Cancer Research and Treatment, 155(1), 25-35. https://doi.org/10.1007/s10549-015-3654-2

Reverse Phase Protein Array (RPPA) represents a sensitive and high-throughput technique allowing simultaneous quantitation of protein expression levels in biological samples. This study aimed to confirm the ability of RPPA to classify archival formal... Read More about Clinical utility of reverse phase protein array for molecular classification of breast cancer.