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Search: L773:2164 5515 > (2012-2014)

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  • Broeker, Michael, et al. (author)
  • Meningococcal serogroup Y emergence in Europe High importance in some European regions in 2012
  • 2014
  • In: Human Vaccines & Immunotherapeutics. - : Landes Bioscience. - 2164-5515 .- 2164-554X. ; 10:6, s. 1725-1728
  • Journal article (peer-reviewed)abstract
    • Neisseria meningitidis is differentiated into 12 distinct serogroups, of which A, B, C, W, X, and Y are medically most important and represent an important health problem in different parts of the world. The epidemiology of N. meningitidis is unpredictable over time and across geographic regions. Recent epidemiological surveillance has indicated an increase of serogroup Y invasive meningococcal disease in some parts of Europe as shown in the epidemiological data for 2010 and 2011 from various European countries previously published in this journal. 1,2 Here, data from 33 European countries is reported indicating that the emergence of serogroup Y continued in 2012 in various regions of Europe, especially in Scandinavia, while in Eastern and South-Eastern Europe the importance of serogroup Y remained low.
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  • Nowroozalizadeh, Salma, et al. (author)
  • Short-term HIV-1 treatment interruption is associated with dysregulated TLR-stimuli responsiveness.
  • 2013
  • In: Human Vaccines & Immunotherapeutics. - : Informa UK Limited. - 2164-5515 .- 2164-554X. ; 9:10, s. 2103-2110
  • Journal article (peer-reviewed)abstract
    • Viremia during human immunodeficiency virus type-1 (HIV-1) infection results in progressive impairment of several components of the immune system. Here a unique model of repeated treatment interruptions (TIs) was used with the aim to reveal the effect of controlled short-term viremia on innate stimuli responsiveness and circulating dendritic cells (DCs). Sequential peripheral blood samples from HIV-1-infected patients on combination antiretroviral therapy, subjected to repeated TI cycles as part of a therapeutic DNA vaccination study, were analyzed. In vitro responsiveness of peripheral blood mononuclear cells to toll-like receptor (TLR) stimuli was analyzed by cytokine secretion, and frequencies of plasmacytoid DCs (pDCs) and myeloid DCs (mDCs) were monitored by flow cytometry. These parameters were found not to be significantly different between the vaccinated and placebo groups. Instead, independent of vaccination altered in vitro TLR responsiveness was observed in parallel with TI cycles. TLR7/8-triggered secretion of IL-12 and IFN-α, as well as TLR9-triggered secretion of IL-12, was hyperactivated. In contrast, expression of IFN-α after TLR9 stimulation decreased during the initial cycle of TI. Reduced frequencies of pDCs and mDCs, compared with baseline, were noted before and during the second TI, respectively. Furthermore, spontaneous ex vivo release of IL-12 from PBMC was noted during cycles of TI. In conclusion, these results suggest that consequences of short-term TI include dysregulated TLR responses and fluctuations in the frequencies of circulating DCs. Knowledge of these immunological factors may influence the continuation of stringent treatment schedules during HIV infections.
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  • Result 1-10 of 14

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