3.1 Essential informations of participants
A total of 31 pSS patients (29 females,2 males) and 29 HCs (28 females,1
males)were recruited in this study.There was no significant difference
in age between pSS and HCs groups(47.13±11.94 vs.
43.69±8.79,P =0.212).The mean disease duration of pSS patients was
46 months, ranging from 1 month to 122 months.The clinical
manifestations and laboratory parameters of the enrolled participants
are presented in Table 1.