The Trojan horse - neuroinflammatory impact of T cells in neurodegenerative diseases

Table 1 Summary of T cell populations’ alterations found in PD, AD, and MS patients’ blood

T cell population	PD	AD	MS
CD4: CD8 ratio	Reduced [12,13,14,15]	Increased [38]	Reduced [46]
Th1 cells	Reduced [17]	No differences [41]	Increased [47]
Th17 cells	Increased [18]	Increased [41]	Increased [47]
Th17 cells	Comparable [17]
Treg cells	Comparable [25]	Increased [25]	Reduced [48]
Treg cells	Impaired function [12]

ISSN: 1750-1326