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An Animal Model of Acute and Chronic Chagas Disease With the Reticulotropic Y Strain of Trypanosoma cruzi That Depicts the Multifunctionality and Dysfunctionality of T Cells
In conclusion, during acute T. cruzi infection with the reticulotropic Y strain, immune activation leads to the generation of antigen-specific multifunctional CD4+ Th1 and CD8+ Tc1 cells and their regulation by inhibitory receptor co-expression. In contrast, during chronic T. cruzi infection, the chronicity of the infection induces a moderate inflammatory infiltrate in colon and liver tissues accompanied with poor T cell effector function that is possibly related to the co-expression of inhibitory receptors on T cells, but this phenomenon does not occur in cytotoxic CD8+ T cells. Taken together, these data supp...
Source: Frontiers in Immunology - April 25, 2019 Category: Allergy & Immunology Source Type: research

From “Serum Sickness” to “Xenosialitis”: Past, Present, and Future Significance of the Non-human Sialic Acid Neu5Gc
Conclusions and Perspectives In this review, we have discussed important milestones from the early description of “Serum-sickness” as being due to antibodies directed against Neu5Gc epitopes all the way to the present-day therapeutic implications of these antibodies in cancer therapy. Some of these milestones have been represented in a concise timeline (Figure 6). While the “Xenosialitis” hypothesis is well-supported in the human-like mouse models, it has yet to be conclusively proven in humans. It remains to be seen if “Xenosialitis” plays a role in other uniquely-human dis...
Source: Frontiers in Immunology - April 16, 2019 Category: Allergy & Immunology Source Type: research

Fight Aging! Newsletter, January 28th 2019
In this study, we show that calorie restriction is protective against age-related increases in senescence and microglia activation and pro-inflammatory cytokine expression in an animal model of aging. Further, these protective effects mitigated age-related decline in neuroblast and neuronal production, and enhanced olfactory memory performance, a behavioral index of neurogenesis in the SVZ. Our results support the concept that calorie restriction might be an effective anti-aging intervention in the context of healthy brain aging. Greater Modest Activity in Late Life Correlates with Lower Incidence of Dementia ...
Source: Fight Aging! - January 27, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs