Table 1.

Total alpha-synuclein (αSyn) and enolase levels in serum and cerebrospinal fluid

	COVID-19 with neurological symptoms	COVID-19 without neurological symptoms	Healthy controls	p value
Age, years	65.0 (61.4–76.3)a	66.5 (65.9–68.4)a	66.5 (64–70.5)a	–
Sex, M/F	5/2	8/5	6/2	–
Serum αSyn, ng/ml	15.64 (13.3) (n = 7)	20.92 (18.1—26.9)a (n = 13)	26.82 (18.90) (n = 8)	0.27
CSF αSyn, pg/ml	324.2 (223.4) (n = 3)	–	256.5 (265.6) (n = 8)	0.71
Serum enolase, ng/ml	9.31 (4.7) (n = 7)	14.35 (8.9) (n = 13)	–	0.18

All data are displayed as Mean (SD), unless otherwise indicated

CSF cerebrospinal fluid, F: female, M male

^aMedian (interquartile interval)