8 research outputs found

    Host-Pathogen Interaction during Pneumococcal Infection in Patients with Chronic Obstructive Pulmonary Disease

    Get PDF
    Acute exacerbation is a frequent complication of chronic obstructive pulmonary disease (COPD). Recent studies suggested a role for bacteria such as Streptococcus pneumoniae in the development of acute exacerbation. For this study, we investigated the following in COPD patients: (i) the epidemiology of pneumococcal colonization and infection, (ii) the effect of pneumococcal colonization on the development of exacerbation, and (iii) the immunological response against S. pneumoniae. We cultured sputa of 269 COPD patients during a stable state and during exacerbation of COPD and characterized 115 pneumococcal isolates by use of serotyping. Moreover, we studied serum immunoglobulin G (IgG) antibody titers, antibody avidities, and functional antibody titers against the seven conjugate vaccine serotypes in these patients. Colonization with only pneumococci (monocultures) increased the risk of exacerbation, with a hazard ratio of 2.93 (95% confidence interval, 1.41 to 6.07). The most prevalent pneumococcal serotypes found were serotypes 19F, 3, 14, 9L/N/V, 23A/B, and 11. We calculated the theoretical coverage for the 7- and 11-valent pneumococcal vaccines to be 60 and 73%, respectively. All patients had detectable IgG levels against the seven conjugate vaccine serotypes. These antibody titers were significantly lower than those in vaccinated healthy adults. Finally, on average, a 2.5-fold rise in serotype-specific and functional antibodies in S. pneumoniae-positive sputum cultures was observed during exacerbation. Our data indicate that pneumococcal colonization in COPD patients is frequently caused by vaccine serotype strains. Moreover, pneumococcal colonization is a risk factor for exacerbation of COPD. Finally, our findings demonstrate that COPD patients are able to mount a significant immune response to pneumococcal infection. COPD patients may therefore benefit from pneumococcal vaccination

    ‘This is Staffordshire not Alabama’: Racial Geographies of Commonwealth Immigration in Early 1960s Britain

    Full text link
    In the 1964 general election, the English town of Smethwick outside Birmingham became infamous for the unprecedented way in which issues of immigration, race and racism entered British national politics. Conservative candidate Peter Griffiths captured the Smethwick seat in Parliament from long-standing Labour MP Patrick Gordon Walker, aided by the slogan ‘If you want a nigger neighbour, vote Liberal or Labour’—a watershed episode soon overshadowed by the rise of Powellism in the late 1960s. Debates between Griffiths, his supporters and his opponents in the early to mid-1960s about the local and national implications of ‘coloured’ immigration (particularly of Indian Sikhs) from the Commonwealth and the legacy of empire drew upon a densely entangled set of global reference points that went beyond a ‘multi-racial’ Britain being reshaped by its ‘multi-racial’, postcolonial Commonwealth. Racist rhetoric, as well as an increasingly assertive anti-racist activism by the Indian Workers' Association and other groups, turned to analogies ranging from Nazi Germany to apartheid South Africa and racial segregation in the United States, as well as to protest techniques inspired by Gandhi in colonial India and African Americans in the civil rights movement. In Smethwick c. 1964, the global met the local, illuminating transnational flows of people and ideas about race and cultural diversity nonetheless contingent upon their time and place
    corecore