Nicky de Vrij, Julia Pollmann, Antonio M Rezende, Ana V Ibarra-Meneses, Thao-Thy Pham, Wasihun Hailemichael, Mekibib Kassa, Tadfe Bogale, Roma Melkamu, Arega Yeshanew, Rezika Mohammed, Ermias Diro, Ilse Maes, Malgorzata A Domagalska, Hanne Landuyt, Florian Vogt, Saskia van Henten, Kris Laukens, Bart Cuypers, Pieter Meysman, Hailemariam Beyene, Kasaye Sisay, Aderajew Kibret, Dagnew Mersha, Koert Ritmeijer, Johan van Griensven, Wim Adriaensen
A large proportion of HIV-coinfected visceral leishmaniasis (VL-HIV) patients exhibit chronic disease with frequent VL recurrence. However, knowledge on immunological determinants underlying the disease course is scarce. We longitudinally profiled the circulatory cellular immunity of an Ethiopian HIV cohort that included VL developers. We show that chronic VL-HIV patients exhibit high and persistent levels of TIGIT and PD-1 on CD8+ /CD8- T cells, in addition to a lower frequency of IFN-γ+ TIGIT- CD8+ /CD8- T cells, suggestive of impaired T cell functionality...
May 3, 2024: Communications Biology