Tammy Dougan

Tammy Dougan

Greater Cambridge Area
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Super connector. Leadership.
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Experience

  • University of Cambridge Graphic

    University of Cambridge

    Cambridge, England, United Kingdom

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    Cambridge, United Kingdom

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    Cambridge, United Kingdom

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    Cambridge, United Kingdom

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    Cambridge, United Kingdom

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    School of Medicine

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    Townsville, Australia

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    Australia

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    Cambridgeshire

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    London

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    London, United Kingdom

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    London, United Kingdom

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    Papillomavirus Research Unit

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    Siena, Italy

Education

  • King's College London Graphic

    Kings College London

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    The analysis of the affinity of autoantibodies in sera from patients with Goodpastures’ Disease and systemic Vasculitis, using a resonant mirror biosensor. Techniques: immunoglobulin preparation, IAsys resonant mirror biosensor, ELISA, western blots, analysis of antibody- antigen affinity and kinetics using several mathematical models.

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    Activities and Societies: Medicine Research Committee Medicine Biosafety Committee

    Immunology and Vascular Biology
    Abdominal aortic aneurysms and the mechanisms of Inflammation
    Mechanisms of inflammation - therapeutic targets for abdominal aortic aneurysms. Techniques: FACS Calibur with CellQuest Pro and Cyan FACS. Disease model experience: setting up models and analysis. ELISA, IHC, Immunofluorescense. Neutrophil isolation, activation and functional assays. Transmigratin and Chemotaxis assays with neutrophils and Endothelial cell culture.

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    Comparative investigation of heavy metal resistance in bacteria isolated from rural soil and an industrial soil, the affects that heavy metals such as mercury and lead have on the micro-organism population. This involved the isolation and identification of the micro-organisms present in the soil. The growth of the bacteria present on media containing different levels of mercury, cadmium and nickel, the isolation of the total DNA present in the bacteria and PCR amplification of a mercury…

    Comparative investigation of heavy metal resistance in bacteria isolated from rural soil and an industrial soil, the affects that heavy metals such as mercury and lead have on the micro-organism population. This involved the isolation and identification of the micro-organisms present in the soil. The growth of the bacteria present on media containing different levels of mercury, cadmium and nickel, the isolation of the total DNA present in the bacteria and PCR amplification of a mercury resistant region.

Publications

  • Modulation of Kinin B2 Receptor Signaling Controls Aortic Dilatation and Rupture in the Angiotensin II–Infused Apolipoprotein E–Deficient Mouse

    Arterioscler Thromb Vasc Biol

    Arterioscler Thromb Vasc Biol. 2016 May;36(5):898-907. doi: 10.1161/ATVBAHA.115.306945. Epub 2016 Mar 10.

    Other authors
    See publication
  • Urinary monocyte chemoattractant protein-1 (MCP-1) is a marker of active renal vasculitis

    Nephrology Dialysis Transplantation

    Background. Macrophage infiltration and cytokine production are important in the pathogenesis of crescentic glomerulonephritis in anti-neutrophil cytoplasm antibody (ANCA)-associated vasculitis. The aim of this study was to investigate whether urinary levels of chemokines, monocyte chemoattractant protein-1 (MCP-1) and fractalkine, were useful tools for non-invasive assessment of renal vasculitis.Methods. In a prospective study, concentrations of chemokines were measured in urine and serum…

    Background. Macrophage infiltration and cytokine production are important in the pathogenesis of crescentic glomerulonephritis in anti-neutrophil cytoplasm antibody (ANCA)-associated vasculitis. The aim of this study was to investigate whether urinary levels of chemokines, monocyte chemoattractant protein-1 (MCP-1) and fractalkine, were useful tools for non-invasive assessment of renal vasculitis.Methods. In a prospective study, concentrations of chemokines were measured in urine and serum samples using specific enzyme-linked immunosorbent assays, and related to the patients’ clinical status. Renal expression of MCP-1 was studied by immunohistochemical staining of renal biopsies.Results. Urinary levels of MCP-1 were significantly higher in patients with active (P<0.01) or persistent (P<0.05) renal vasculitis, in comparison with healthy volunteers, control patients, patients with inactive vasculitis and patients with extra-renal disease only. There were no differences in serum concentrations of MCP-1 between these groups. Reduction in urinary MCP-1 levels following treatment preceded the improvement of renal function by a median of 2 weeks. In one patient, rising urinary levels of MCP-1, despite immunosuppressive therapy, was associated with progression to severe renal failure. There were no differences in urinary fractalkine levels between the different groups of patients and controls. Immunohistology of renal biopsies from patients with crescentic glomerulonephritis showed increased staining for MCP-1 in glomerular and interstitial cells. Urinary MCP-1 levels correlated with glomerular, but not tubulointerstitial, macrophage infiltration (P<0.05).Conclusions. This study shows that measurement of urinary MCP-1, but not fractalkine, is a useful non-invasive technique for the assessment of renal involvement and monitoring the response to therapy in ANCA-associated vasculitis.

    Other authors
    • Tam, Frederick W. K.
    • Sanders, Jan-Stephan
    • George, Abraham
    • Hammad, Tarig
    • Miller, Caroline
    • Cook, H. Terence
    • Kallenberg, Cees G. M.
    • Gaskin, Gill
    • Levy, Jeremy B.
    • Pusey, Charles D.
    See publication
  • Clinical features and outcome of patients with both ANCA and anti-GBM antibodies

    Kidney Int

    Background. Patients have been described who have
    both anti-neutrophil cytoplasm antibodies (ANCA) and antiglomerular
    basement membrane (GBM) antibodies. We have
    attempted to define the true prevalence of such “double positive”
    patients, and describe in detail their clinical features and
    outcome.
    Methods. We have reviewed all serologic assays performed
    between 1990 and 2000 in a single institution, and the case notes
    of patients having sera positive for both ANCA and…

    Background. Patients have been described who have
    both anti-neutrophil cytoplasm antibodies (ANCA) and antiglomerular
    basement membrane (GBM) antibodies. We have
    attempted to define the true prevalence of such “double positive”
    patients, and describe in detail their clinical features and
    outcome.
    Methods. We have reviewed all serologic assays performed
    between 1990 and 2000 in a single institution, and the case notes
    of patients having sera positive for both ANCA and anti-GBM
    antibodies. During this time 20,392 sera were initially tested for
    ANCA, and 4808 sera tested for anti-GBM antibodies.
    Results. Five percent of all ANCA-positive serum samples
    were also positive for anti-GBM antibodies, and 32% of all anti-
    GBM positive samples had detectable ANCA. Of 27 patients
    with both antibodies, 82% had anti-myeloperoxidase specific PANCA.
    Pulmonary hemorrhage occurred in 44%. Renal biopsy
    showed extensive glomerular cellular crescents in most patients.
    Patient and renal survival rates were 52% and 26%, respectively,
    at one year. Sixty-eight percent of patients were dialysisdependent
    at presentation, and none of these recovered renal
    function, despite immunosuppression with or without plasma
    exchange.
    Conclusion. Serologic evidence of double positivity for both
    ANCAand anti-GBM antibodies is common in patients with either
    antibody. In our study these patients have a poor prognosis
    when presenting with severe disease and initially behave more
    like anti-GBM disease than vasculitis. Recovery from severe
    renal failure is rare.

    Other authors
    • Jeremy, B. Levy
    • Tarig, Hammad
    • Anne, Coulthart
    • Charles, D. Pusey
    See publication
  • Characterization of autoantibodies from patients with Goodpasture’s disease

    Clin Exp Immuno

    Goodpasture’s disease is characterized by the binding of IgG autoantibodies to the glomerular basement
    membrane, leading to glomerular inflammation. The autoantigen has been identified as the noncollagenous
    domain of the a3 chain of type IV collagen (a3(IV)NC1). We have used the IAsys resonant
    mirror biosensor to analyse the extent and affinity of binding of anti-GBM antibodies from sera of
    patients to purified a3(IV) NC1. a3(IV) NC1 monomers were immobilized to a carboxylate…

    Goodpasture’s disease is characterized by the binding of IgG autoantibodies to the glomerular basement
    membrane, leading to glomerular inflammation. The autoantigen has been identified as the noncollagenous
    domain of the a3 chain of type IV collagen (a3(IV)NC1). We have used the IAsys resonant
    mirror biosensor to analyse the extent and affinity of binding of anti-GBM antibodies from sera of
    patients to purified a3(IV) NC1. a3(IV) NC1 monomers were immobilized to a carboxylate cuvette,
    with the simultaneous use of a control well. The binding of serum from patients with Goodpasture’s
    disease (n = 12), normal controls (n = 14) and disease controls with vasculitis (n = 14) was analysed.
    Antibody binding was detected in sera from all patients with Goodpasture’s disease but not from controls.
    IAsys measurements of binding correlated with antibody levels assessed by the standardized
    ELISA used for clinical assays. Both ELISA and biosensor measurements showed declining antibody
    levels in serial serum samples from treated patients; however, the biosensor detected antibody recrudescence
    when ELISA remained negative. Autoantibodies from patients’ serum had average affinity constants
    (Kd) of 6·5 ¥ 10–11M to 52·07 ¥ 10–10M, as determined by an inhibition assay, indicating high affinity.
    Sips analysis showed that the antibody response was relatively homogeneous (values of 0·46–1). Biosensor
    techniques can therefore be used to detect and characterize anti-GBM antibodies in serum from
    patients, with high sensitivity and without need for antibody purification. This technique may be useful
    in diagnosis and monitoring of patients with Goodpasture’s disease, and may be applicable to other
    autoantibody mediated diseases.

    Other authors
    • T. DOUGAN
    • J. B. LEVY
    • A. SALAMA
    • A. J. T. GEORGE
    • C. D. PUSEY
    See publication
  • Goodpasture’s Disease in the Absence of Circulating Anti–Glomerular Basement Membrane Antibodies as Detected by Standard Techniques

    American Journal of Kidney Diseases

    Goodpasture’s disease is characterized by rapidly progressive glomerulonephritis, often accompanied by
    pulmonary hemorrhage, in association with deposition of antibodies in a linear pattern on the glomerular basement
    membrane (GBM). The diagnosis of Goodpasture’s disease in patients with acute renal failure often relies on the
    use of immunoassays to detect circulating anti-GBM antibodies in serum samples. We describe three cases of
    Goodpasture’s disease in which no circulating…

    Goodpasture’s disease is characterized by rapidly progressive glomerulonephritis, often accompanied by
    pulmonary hemorrhage, in association with deposition of antibodies in a linear pattern on the glomerular basement
    membrane (GBM). The diagnosis of Goodpasture’s disease in patients with acute renal failure often relies on the
    use of immunoassays to detect circulating anti-GBM antibodies in serum samples. We describe three cases of
    Goodpasture’s disease in which no circulating anti-GBM antibodies were detectable in serum by well-established
    enzyme-linked immunosorbent assay or Western blotting techniques. The diagnosis of Goodpasture’s disease was
    confirmed by renal biopsy, with linear deposition of immunoglobulin along the GBM and crescentic glomerulonephritis.
    In addition, an alternative method of antibody detection using a highly sensitive biosensor system
    confirmed that circulating antibodies were present in sera from both patients tested. Because this technique is not
    routinely available for the detection of anti-GBM antibodies, we suggest that diagnosis always be confirmed with a
    renal biopsy, and despite negative serological test results using immunoassay, the diagnosis of Goodpasture’s
    disease should still be considered in the correct clinical context.

    Other authors
    • Alan D. Salama
    • Jeremy B. Levy
    • Terry Cook
    • Andrew J.T. George
    • Charles D. Pusey
    See publication
  • Reduction of streptavidin RYDS-mediated renal adhesion by site-directed mutagenesis

    Biochimica et Biophysica Acta

    Naturally occurring core-Streptavidin (c-Strep) would serve as a more useful agent in vivo if not for its high kidney retention. This
    retention is mediated by an integrin-binding motif—RYDS—that shares homology to the more common RGDS. We generated a c-Strep
    molecule constituting amino acids 13–139 of streptavidin and by site-directed mutagenesis altered the RYDS motif to RYES. RYDS-c-
    Streptavidin and RYES-c-Streptavidin were expressed in E. coli and purified on a 2-imminobiotin…

    Naturally occurring core-Streptavidin (c-Strep) would serve as a more useful agent in vivo if not for its high kidney retention. This
    retention is mediated by an integrin-binding motif—RYDS—that shares homology to the more common RGDS. We generated a c-Strep
    molecule constituting amino acids 13–139 of streptavidin and by site-directed mutagenesis altered the RYDS motif to RYES. RYDS-c-
    Streptavidin and RYES-c-Streptavidin were expressed in E. coli and purified on a 2-imminobiotin matrix. Each demonstrated an affinity for
    biotin similar to that of native post-secretory streptavidin while maintaining their ability to form dimers and tetramers. The mutant RYES-c-
    Streptavidin was no longer able to mediate normal rat kidney cell attachment in an in vitro assay. RYDS-c-Streptavidin-mediated kidney cell
    attachment was inhibited by competition with c-Streptavidin, RYDS-c-Streptavidin and RGDS-containing peptides but not with an irrelevant
    peptide or RYES-c-Streptavidin. Therefore, the point mutation D49E generates a molecule, which may not display the in vivo kidney
    retention observed for RYDS-c-Streptavidin, potentially finding more widespread clinical application.

    Other authors
    • Samuel Murray
    • Anthony Maraveyas b, Tammy Dougan a, Anthony C. Chu
    • Anthony C. Chu
    See publication

Courses

  • NVQ Business and Admin

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  • PRINCE2 Foundation

    University of Cambridge

Projects

  • Cambridge-GSK Translational Immunology Collaboration (CG-TIC)

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    The Cambridge-GSK Translational Immunology Collaboration (CG-TIC) combines University and GSK expertise in the science of the immune system, AI and clinical development with access to patients and their data provided by Cambridge University Hospitals.

  • The Cambridge Institute of Therapeutic Immunology and Infectious Disease

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    CITIID

    The Cambridge Institute for Therapeutic Immunology and Infectious Disease (CITIID) was established by the Department of Medicine to support both fundamental and translational research on human disease. Infectious disease, antimicrobial resistance and autoimmunity are three of humanity’s deadliest foes and a major global challenge. Cambridge is one of the world’s leading research universities, working across disciplines with international partners to find solutions to global these…

    CITIID

    The Cambridge Institute for Therapeutic Immunology and Infectious Disease (CITIID) was established by the Department of Medicine to support both fundamental and translational research on human disease. Infectious disease, antimicrobial resistance and autoimmunity are three of humanity’s deadliest foes and a major global challenge. Cambridge is one of the world’s leading research universities, working across disciplines with international partners to find solutions to global these challenges. Many Cambridge Infectious Diseases members are housed together at CITIID. With researchers working directly in countries throughout the globe, we have a very real understanding of the impact diseases have on patients.

    CITIID houses up to 250 scientists working within 25 research groups. The Institute’s work focusses on understanding the pathogenesis and improving the management of immune-related disorders and transforming our understanding of how the infectious agents interact with humans.

    CITIID transforms immunity and infection research in Cambridge by providing researchers with advanced facilities that are in close proximity and enable them to optimise their work on human immune, inflammatory and infectious diseases. By bringing together its clinical capabilities and key industry partners, CITIID is also well-placed to drive therapeutic breakthroughs, improve patient outcomes and advance population health both in the UK and abroad.

Honors & Awards

  • JCU International Scholarship

    JCU

    One year additional scholarship awarded.

  • School of Medicine Scholarship

    School of Medicine

  • AVBS Travel award Scholarship

    Australian Vascular Biology Society

    I won a full travel, registration and conference scholarship. My abstract was voted in the top ten of those submitted to the conference.

  • JCU School of Medicine Scholarship

    School of Medicine JCU

    An additional Scholarship for three years for my PhD

  • JCU International Scholarship

    James Cook University

    I recieved an International full scholarship to study my PhD, including fee's and an additional scholarship for living expenses. For three years.

Organizations

  • Cambridge Enterprise- University of Cambridge

    Enterprise Champion

    - Present

    Tammy is Co-ordinator of Cambridge Immunology, which brings together immunologists working in and around Cambridge, whose work ranges from discovery of the basic molecular mechanisms underpinning the immune response through to applications relevant to the clinic, to industry and to global health.

  • JCU Biosafety committee

    Post Grad Rep

    - Present
  • JCU School of Medicine Research Committee

    Post Grad Rep

    - Present
  • Australian Society of Immunology ASI

    QLD ASI committee member

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    QLD ASI committee memberCommittee member of ASI Queensland branch Organise events such as Day of Immunology, Post Grad conferences.

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