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- Koguchi-Yoshioka, H, et al.
(author)
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Skin T cells maintain their diversity and functionality in the elderly
- 2021
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In: Communications biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 4:1, s. 13-
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Journal article (peer-reviewed)abstract
- Recent studies have highlighted that human resident memory T cells (TRM) are functionally distinct from circulating T cells. Thus, it can be postulated that skin T cells age differently from blood-circulating T cells. We assessed T-cell density, diversity, and function in individuals of various ages to study the immunologic effects of aging on human skin from two different countries. No decline in the density of T cells was noted with advancing age, and the frequency of epidermal CD49a+ CD8 TRM was increased in elderly individuals regardless of ethnicity. T-cell diversity and antipathogen responses were maintained in the skin of elderly individuals but declined in the blood. Our findings demonstrate that in elderly individuals, skin T cells maintain their density, diversity, and protective cytokine production despite the reduced T-cell diversity and function in blood. Skin resident T cells may represent a long-lived, highly protective reservoir of immunity in elderly people.
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- Cheuk, S, et al.
(author)
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The Skinny on Fat Trm Cells
- 2017
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In: Immunity. - : Elsevier BV. - 1097-4180 .- 1074-7613. ; 47:6, s. 1012-1014
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Journal article (peer-reviewed)
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- Eidsmo, L, et al.
(author)
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Alteration of Fas and Fas ligand expression during human visceral leishmaniasis
- 2002
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In: Clinical and experimental immunology. - : Oxford University Press (OUP). - 0009-9104 .- 1365-2249. ; 130:2, s. 307-313
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Journal article (peer-reviewed)abstract
- Several studies in murine systems have suggested a role of apoptosis in the pathogenesis of leishmaniasis. However, the role of apoptosis in visceral leishmaniasis in man has not been explored. In this study, we show that patients with visceral leishmaniasis demonstrate significant dysregulation of Fas and Fas ligand. Levels of soluble Fas (sFas) and soluble Fas ligand (sFasL) were elevated in plasma of patients with active visceral leishmaniasis (VL) and individuals co-infected with VL-HIV-1 compared to healthy controls. The levels of sFas and sFasL were normalized 6 months after successful treatment. In VL patients, the expression of membrane bound Fas, and to a lower extent FasL, were up-regulated on Leishmania donovani-infected spleen cells, the site of parasite multiplication. Expression of Fas and FasL on peripheral blood mononuclear cells was within normal range, probably reflecting that the blood is not a normal site of L. donovani infection. Furthermore, this is suggested by the finding that in vitro infection of macrophages with L. donovani up-regulated Fas expression on the surface of infected cells and enhanced the levels of sFasL in supernatants from infected cultures. How this dysregulation may affect the pathogenesis of human visceral leishmaniasis is discussed.
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- Eidsmo, L
(author)
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New Hope for Patients with Vitiligo
- 2022
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In: The New England journal of medicine. - 1533-4406. ; 387:16, s. 1515-1516
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Journal article (other academic/artistic)
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| 30. |
- Eidsmo, L
(author)
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New Hope for Patients with Vitiligo
- 2022
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In: The New England journal of medicine. - 1533-4406. ; 387:16, s. 1515-1516
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Journal article (other academic/artistic)
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