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- Abila, R., et al.
(författare)
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Oil extraction imperils Africa’s Great Lakes
- 2016
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 354:6312, s. 561-562
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- As the world's demands for hydrocarbons increase (1), remote areas previously made inaccessible by technological limitations are now being prospected for oil and gas deposits. Virtually unnoticed by the public, such activities are ongoing in the East African Great Lakes region, threatening these ecosystems famed for their hyper-diverse biota, including the unique adaptive radiations of cichlid fishes (2). Countries in the region see exploitation of hydrocarbon reserves as a vital economic opportunity. In the Lake Albert region of Uganda, for example, the government foresees a $3.6 billion oil profit per year starting in 2018—a sum almost as high as the country's current annual budget (3). However, oil extraction in the East African Great Lakes region poses grave risks to the environment and local communities.
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| 2. |
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| 3. |
- Calus, L, et al.
(författare)
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IL-21 Is Increased in Nasal Polyposis and after Stimulation with Staphylococcus aureus Enterotoxin B
- 2017
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Ingår i: International archives of allergy and immunology. - : S. Karger AG. - 1423-0097 .- 1018-2438. ; 174:3-4, s. 161-169
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Tidskriftsartikel (refereegranskat)abstract
- <b><i>Background:</i></b> Chronic rhinosinusitis with nasal polyposis (CRSwNP) is an inflammatory disease associated with lymphoid aggregates and local IgE production related to <i>Staphylococcus aureus</i> enterotoxins. T-follicular helper cells and their effector cytokine interleukin (IL)-21 play an important role in germinal center proliferation. <b><i>Methods:</i></b> IL-21 was determined on the mRNA level by qPCR in nasal tissue of 3 groups of patients: control (<i>n</i> = 17), chronic rhinosinusitis without nasal polyposis (CRSsNP; <i>n</i> = 23), and CRSwNP (<i>n</i> = 35). The expression of IL-21 by CD4+ T cells was analyzed in tissue at baseline and after 24-h stimulation of tissue fragments with <i>S. aureus</i> enterotoxin B (SEB) using flow cytometry. Finally, human nasal IL-21+CXCR5+CD4+ T cells were isolated and coincubated with human blood naive B cells to investigate their functionality. <b><i>Results:</i></b> IL-21 mRNA expression was increased in the CRSwNP group (<i>p</i> < 0.05) compared to the control group, and B-cell lymphoma-6 and B-lymphocyte-induced maturation protein-1 were upregulated in CRSwNP versus CRSsNP. Furthermore, SEB was able to increase IL-21 mRNA expression significantly (<i>p</i> < 0.01) in nasal polyps. Flow cytometry revealed that the source of IL-21 was predominantly CD4+ T cells and that IL-21+CD4+ T cells were significantly increased in polyp tissue and further increased after SEB stimulation. Finally, tissue CXCR5+CD4+ T cells derived from nasal polyp tissue were able to induce maturation of human naive B cells. <b><i>Conclusions:</i></b> IL-21- and IL-21-producing CD4+ T cells were increased in CRSwNP. In addition, SEB induced an increase in IL-21 and IL-21+CD4+ T cells, suggesting that <i>S. aureus</i> can modulate the function of Tfh cells in nasal polyps. We speculate that T-follicular helper cells and IL-21 are important in the pathophysiology of CRSwNP.
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| 5. |
- De Schryver, E, et al.
(författare)
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Local immunoglobulin e in the nasal mucosa: clinical implications
- 2015
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Ingår i: Allergy, asthma & immunology research. - : The Korean Academy of Asthma, Allergy and Clinical Immunology and The Korean Academy of Pediatric Al. - 2092-7355 .- 2092-7363. ; 7:4, s. 321-331
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Tidskriftsartikel (refereegranskat)
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| 6. |
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| 7. |
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| 8. |
- De Schryver, E, et al.
(författare)
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The quest for autoreactive antibodies in nasal polyps
- 2016
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Ingår i: The Journal of allergy and clinical immunology. - : Elsevier BV. - 1097-6825 .- 0091-6749. ; 138:3, s. 893-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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